WO2016136946A1 - Reel body, film connection body, film winding body, and manufacturing method for film connection body - Google Patents

Reel body, film connection body, film winding body, and manufacturing method for film connection body Download PDF

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Publication number
WO2016136946A1
WO2016136946A1 PCT/JP2016/055822 JP2016055822W WO2016136946A1 WO 2016136946 A1 WO2016136946 A1 WO 2016136946A1 JP 2016055822 W JP2016055822 W JP 2016055822W WO 2016136946 A1 WO2016136946 A1 WO 2016136946A1
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WO
WIPO (PCT)
Prior art keywords
film
adhesive
lead
connection
length
Prior art date
Application number
PCT/JP2016/055822
Other languages
French (fr)
Japanese (ja)
Inventor
暁 種市
規雄 鈴木
Original Assignee
デクセリアルズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015039413A external-priority patent/JP2016160027A/en
Priority claimed from JP2016027302A external-priority patent/JP6693161B2/en
Application filed by デクセリアルズ株式会社 filed Critical デクセリアルズ株式会社
Priority to KR1020197008793A priority Critical patent/KR20190035956A/en
Priority to KR1020177022130A priority patent/KR101991190B1/en
Priority to CN201680009703.8A priority patent/CN107207181B/en
Publication of WO2016136946A1 publication Critical patent/WO2016136946A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/28—Arrangements for positively securing ends of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/41419—Starting winding process
    • B65H2301/41427—Starting winding process involving arrangements for securing leading edge to core, e.g. adhesive tape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film

Definitions

  • the present invention relates to a reel body, a film coupling body, a film winding body, and a method for manufacturing a film coupling body.
  • the adhesive film may be provided in a state of being wound on a reel.
  • a reel around which an adhesive film is wound that is, a reel body, generally includes a cylindrical core and an adhesive film wound around the core.
  • a lead film is connected to one end of the adhesive film in the length direction, and the lead film is fixed to the peripheral surface of the core. That is, the adhesive film is wound around the core after being fixed to the core via the lead film. The adhesive film is used by being pulled out from the reel body.
  • an anisotropic conductive film is disclosed as an example of an adhesive film.
  • an anisotropic conductive film having a width of less than 1 mm. Examples of the reason include the following.
  • the anisotropic conductive film is used, for example, to bond components disposed in the outer frame (so-called frame) of various displays.
  • frame there are various displays in which anisotropic conductive films are used.
  • the anisotropic conductive film is used not only for various types of stationary displays but also for portable displays (for example, displays for smartphones, mobile phones, and wearable devices).
  • the outer frame of these displays is becoming narrower year by year mainly to increase the proportion of the display area. For this reason, the need to narrow the width of the anisotropic conductive film is increasing year by year.
  • JP 2006-218867 A International Publication No. 2010/084728 Japanese Patent Laying-Open No. 2005-297055 JP 2001-284005 A JP 2009-289755 A
  • connection strength between the adhesive film and the lead film tends to be weakened.
  • the adhesive film is easily detached from the lead film when tension is applied to the adhesive film. Examples of the case where tension is applied to the adhesive film include a case where the adhesive film is pulled out from the reel body. If the adhesive film in the reel body is detached from the lead film, the reel body cannot be used. This is because when the adhesive film is detached from the lead film, the adhesive film cannot be pulled out from the reel body. Specifically, even if the adhesive film is to be pulled out from the reel body, the adhesive film is not pulled out from the reel body only by spinning the reel body. Therefore, all of the adhesive film remaining on the reel body is wasted.
  • Patent Document 3 discloses a so-called ultrasonic connection technique as a technique for connecting a plurality of members. In this technique, one member is pressed against the other member, and ultrasonic vibration is applied to these members.
  • connection strength between the adhesive film and the lead film could not be increased sufficiently.
  • irregularities are formed in the connection portion between the adhesive film and the lead film. Therefore, when the adhesive film is wound around the core, the unevenness is transferred to the adhesive film. Specifically, the unevenness
  • the present invention has been made in view of the above problems, and an object of the present invention is to make it difficult for the adhesive film to come off the lead film even when the width of the adhesive film becomes narrow. It is an object of the present invention to provide a new and improved reel body, film coupling body, film winding body, and film coupling body manufacturing method capable of achieving the above.
  • a cylindrical core, a lead film connected to the peripheral surface of the core, and an adhesive film having a width of less than 1 mm wound around the core And a connecting tape for connecting the lead film and the adhesive film, and a reel body having a connection strength of 5.0 N or more between the lead film and the adhesive film by the connecting tape is provided.
  • the adhesive film includes a support film and an adhesive layer formed on the support film, the support film has a protruding portion protruding in the length direction with respect to the adhesive layer, and the connection tape includes the support film. You may connect a protrusion part and a lead film.
  • the total length of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape may be larger than 30% of the circumferential length of the outer peripheral surface of the core.
  • the total length of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape may be 120 mm or more.
  • the ratio of the adhesive surface length between the adhesive film and the connecting tape and the adhesive surface length between the lead film and the connecting tape may be 3: 7 to 7: 3.
  • connection tape may be provided on the front and back surfaces of the adhesive film and the lead film.
  • the length of the adhesive film may be 50 m or more.
  • the adhesive film may contain an anisotropic conductive material.
  • a lead film coupled to the peripheral surface of the reel core, an adhesive film having a width of less than 1 mm wound around the core, and a connection tape connecting the lead film and the adhesive film.
  • a film coupling body in which the connection strength between the lead film and the adhesive film by the connection tape is 5.0 N or more.
  • the adhesive film having a width of less than 1 mm and the lead film are connected by the connecting tape.
  • the connection strength of an adhesive film and a lead film shall be 5.0 N or more. As shown in Examples described later, when the connection strength is 5.0 N or more, the adhesive film is difficult to come off from the lead film. Therefore, even if the width of the adhesive film is less than 1 mm, the adhesive film can be hardly detached from the lead film.
  • a support film a support film adjacent to an end portion in the length direction of the support film, and connected to the peripheral surface of the reel core, A connection tape that connects one side of the support film and the lead film, an adhesive layer formed on the other side of the support film, and a cured product of the adhesive layer. And a hardened layer formed over the other surface, wherein a connection strength between the support film and the lead film is 5.0 N or more.
  • the width of the film assembly may be less than 1 mm.
  • the length of the connecting tape may be less than 120 mm.
  • the cured layer may contain a photocurable initiator capable of initiating curing of the adhesive layer by light irradiation.
  • the adhesive layer may contain a photocurable initiator.
  • the adhesive layer may include an anisotropic conductive material.
  • a film winding body including a core and the above-described film coupling body wound around the core, wherein the lead film is connected to the core.
  • a reel body including the above-described film winding body and flange portions provided at both axial end portions of the core.
  • a connection step of connecting one surface of the support film and the lead film with a connection tape, and forming an adhesive layer from the other surface of the support film to the other surface of the lead film comprising: an adhesive layer forming step for curing; and a curing step for curing an adhesive layer to be cured, which is an adhesive layer present at a boundary portion between the support film and the lead film.
  • the curing step may be performed by irradiating light on the adhesive layer to be cured.
  • a curing preparation step of adding a photocurable initiator capable of initiating curing of the adhesive layer by light irradiation to the adhesive layer to be cured may be further included.
  • the adhesive layer may include an anisotropic conductive material.
  • the adhesive film can be made difficult to come off the lead.
  • the support film and the lead film can be connected by the cured layer and the connection tape, the adhesive film is removed from the lead film even when the width of the adhesive film is narrowed. It becomes possible to make it difficult to come off.
  • (A) It is a side view which shows typically the external appearance of the reel body which concerns on the 1st Embodiment of this invention.
  • (B) It is a front view which shows typically the external appearance of the reel body which concerns on the 1st Embodiment of this invention.
  • connection tape length and connection intensity It is a graph which compares and shows the connection strength of the reference example (adhesive film width 1.5mm, connecting tape length 30mm), and the comparative example 1 (adhesive film width 0.8mm, connecting tape length 30mm). It is a graph which shows the correspondence of connection tape length and connection intensity. It is a graph which shows the correspondence of tape detachment incidence and connection strength. It is a graph which shows the correspondence of a connection tape length and a tape removal occurrence rate. It is a graph which shows the correspondence of connection tape length and connection intensity.
  • (A) It is a side view which shows typically the external appearance of the reel body which concerns on the 2nd Embodiment of this invention.
  • the reel unit 10 includes a winding core 20, flanges 21 and 22, an adhesive film 30, a lead film 40, a connecting connection tape 50, and a fixing connection tape 60. Prepare.
  • the winding core 20 has a cylindrical shape and serves as a rotation axis of the reel body 10.
  • An adhesive film 30 is wound around the core 20.
  • the outer diameter (the diameter of the outer diameter surface) of the winding core 20 is not particularly limited, and may be appropriately determined according to the use of the reel body 10 or the like.
  • the diameter of the core 20 (the diameter of the outer diameter surface) may be about 45 to 95 mm.
  • the flanges 21 and 22 are provided at both ends of the core 20 in the axial direction.
  • the flanges 21 and 22 are circular members, and are attached to the core 20 so as to be parallel to each other.
  • An adhesive film 30 is accommodated between the flanges 21 and 22.
  • the adhesive film 30 is a long film having a width of less than 1.0 mm. Thus, since the width of the adhesive film 30 is very narrow, it is very difficult to maintain the connection strength with the lead film 40 at a high value. In this regard, in the present embodiment, the connection strength between the adhesive film 30 and the lead film 40 is maintained at a high value, specifically, 5.0 N or more using the connection tape 50 for connection. As shown in the examples described later, when the connection strength between the adhesive film 30 and the lead film 40 is 5.0 N or more, the adhesive film 30 is unlikely to come off the reel body 10.
  • the length of the adhesive film 30 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30.
  • the length of the adhesive film 30 may be 50 m or more, 200 m or more, or 300 m or more.
  • the upper limit is preferably 500 m or less.
  • the adhesive film 30 includes a support film 31 and an adhesive layer 32 formed on the support film 31.
  • the support film 31 is a film that becomes a base layer of the adhesive layer 32.
  • a protruding portion 31 a protruding in the length direction with respect to the adhesive layer 32 is formed at the end portion in the length direction of the support film 31.
  • bonding is adhere
  • the protrusion part 31a should just be formed in the edge part by the side connected to the lead film 40. FIG. Further, the protruding portion 31a may not be provided.
  • the connecting tape for connection 50 may be bonded to the adhesive layer 32.
  • the back surface of the support film 31 (the surface on which the adhesive layer 32 is not formed) and the lead film 40 may be connected by a connecting tape for connection 50.
  • the material of the support film 31 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30.
  • a material constituting the support film 31 for example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), PTFE (Polytetrafluoroethylene) or the like is applied to a PTFE (Polytetrafluoroethylene) or the like. Things.
  • These support films 31 can prevent the adhesive film 30 from drying and can maintain the shape of the adhesive film 30.
  • the thickness of the support film 31 is not particularly limited.
  • the thickness of the support film 31 may be about 12 to 125 ⁇ m.
  • the adhesive layer 32 is an adhesive layer and is formed on the support film 31.
  • the material of the adhesive layer 32 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30.
  • the adhesive layer 32 may be an anisotropic conductive material.
  • the thickness of the adhesive layer 32 is not particularly limited.
  • the thickness of the adhesive layer 32 may be about 3 to 160 ⁇ m.
  • the surface of the adhesive layer 32 may be covered with a cover film. This cover film may be made of substantially the same material as the support film 31.
  • the colors of the support film 31 and the cover film may be white (milky white) or colorless and transparent, for example.
  • the lead film 40 is a member for fixing the adhesive film 30 to the core 20.
  • a connecting tape for connection 50 is bonded to one end of the lead film 40. That is, one end of the lead film 40 is connected to the adhesive film 30 via the connection tape 50 for connection.
  • the other end of the lead film 40 is connected (fixed) to the core 20 via a fixing connection tape 60.
  • the width of the lead film 40 is not particularly limited, but may be the same as the width of the adhesive film 30. In the manufacturing method to be described later, after the original film of the adhesive film 30 and the original film of the lead film 40 are connected by the connecting tape 50 for connection, these original films are cut together. Therefore, the lead film 40 produced by this manufacturing method has the same width as the adhesive film 30.
  • the material of the lead film 40 is not particularly limited.
  • the material constituting the lead film 40 may be the same as the material constituting the support film 31.
  • the thickness of the lead film 40 is not particularly limited, and may be approximately the same as that of the support film 31.
  • the color of the lead film 40 is not particularly limited, but is preferably a color that exists in the support film 31 and is easily visible. For example, when the support film 31 is white (milky white), it may be black.
  • the connecting tape for connection 50 connects the adhesive film 30 and the lead film 40. Specifically, the connecting tape for connection 50 connects the protruding portion 31 a of the adhesive film 30 and the lead film 40. With this connecting tape 50 for connection, the connection strength between the adhesive film 30 and the lead film 40 is maintained at 5.0 N or more.
  • the connection strength includes the type of connection tape 50 for connection (more specifically, the combination of the type of connection tape 50 for connection and the material of the support film 31 and the lead film 40), the length L1 of the adhesive surface 51 and the adhesive surface. It is determined by the total length L of the length L2 of 52, the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52, and the like.
  • the adhesive surface 51 is an adhesive surface between the protruding portion 31 a and the connecting tape 50
  • the adhesive surface 52 is an adhesive surface between the lead film 40 and the connecting tape 50.
  • the inventor has found that the connection strength can be increased to 5.0 N or more by adjusting these parameters.
  • the type of the connecting tape for connection 50 is not particularly limited as long as the connection strength between the adhesive film 30 and the lead film 40 can be 5.0 N or more.
  • a kind of connection tape 50 for a connection a silicon tape etc. are mentioned, for example.
  • the total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 is particularly a length that allows the connection strength between the adhesive film 30 and the lead film 40 to be 5.0 N or more. Not limited.
  • the total length L is, for example, 120 mm or more under the conditions of the examples described later.
  • the total length L is preferably greater than 30% of the circumferential length of the outer peripheral surface of the core 20, more preferably 40% or more, and one or more circumferences of the core 20. Is more preferable. This is because the connection strength is particularly increased when the total length L is a value within these ranges.
  • the upper limit value of the total length L is not particularly limited, but may be about 600 mm. If the total length L is too long, wrinkles are likely to enter the connecting tape for connection 50 when the adhesive film 30 and the lead film 40 are connected. Such wrinkles may cause problems similar to the unevenness at the time of ultrasonic connection.
  • the ratio L1: L2 between the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 is particularly within the range in which the connection strength between the adhesive film 30 and the lead film 40 can be 5.0 N or more. Not limited. L1: L2 may be, for example, 3: 7 to 7: 3.
  • the end of the adhesive film 30 and the end of the lead film 40 are adjacent to each other, but a gap may be formed between them. However, it is preferable that both do not overlap. When both are overlapped, the overlapping portion becomes a step. This level difference may cause the same problem as the unevenness at the time of ultrasonic connection.
  • the width of the connecting tape for connection 50 is not particularly limited, but may be the same as the width of the adhesive film 30. In the manufacturing method to be described later, after the original film of the adhesive film 30 and the original film of the lead film 40 are connected by the connecting tape 50 for connection, these original films are cut together. Therefore, the connecting tape 50 for connection produced by this manufacturing method has the same width as the adhesive film 30.
  • the fixing connection tape 60 connects the lead film 40 and the core 20.
  • the type of the connecting tape for fixing 60 is not particularly limited, but the connecting tape for fixing 60 may be the same type as the connecting tape for connecting 50 from the viewpoint of securing the connection strength between the lead film 40 and the core 20. preferable.
  • the thicknesses of the connecting tape for connection 50 and the connecting tape for fixing 60 are not particularly limited, and are appropriately set from the viewpoint of winding and handling.
  • the connecting tape 50 for connection is provided only on one side of the support film 31 and the lead film 40, but is provided on both sides of the support film 31 and the lead film 40 as shown in FIG. 5. It may be done. Further, as shown in FIG. 6, a connecting tape 50 may be provided on the back surface of the support film 31 (the surface on which the adhesive layer 31 is not formed).
  • connection strength measurement method Next, a connection strength measurement method will be described with reference to FIG. First, the film coupling body 10a is prepared.
  • the film connector 10 a is produced by connecting the adhesive film 30 and the lead film 40 with a connecting tape 50 for connection. The detailed manufacturing method of the film coupling body 10a will be described later.
  • the lead film 40 is fixed to the clamp 110 fixed to the test table 100.
  • the adhesive film 30 is fixed to the tensile tester 120.
  • the adhesive film 30 is cut in the vicinity of the connection portion with the lead film 40 and then the adhesive film 30 is fixed to the tensile tester 120.
  • the tensile tester 120 is pulled up vertically. As the tensile tester 120 is pulled up, the load applied to the tensile tester 120 increases, and the adhesive film 30 is finally separated from the lead film 40. At this time, the load applied to the tensile tester 120 is measured, and the measured value is defined as the connection strength.
  • an original fabric of the support film 31 (support film original fabric) is prepared.
  • the original support film is a film that is wider than the support film 31 and has the same length as the support film 31.
  • the adhesive layer 32 is formed on the surface of the support film original fabric.
  • an adhesive film original fabric is produced.
  • a protrusion 31a is formed at one end of the adhesive film original in the length direction.
  • the protrusion 31a is formed by peeling off the adhesive layer 32 from one end of the adhesive film original in the length direction.
  • you may form the protrusion part 31a by forming the contact bonding layer 32 in places other than the protrusion part 31a.
  • the protruding portion 31a may be washed before bonding the connecting tape for connection 50.
  • the lead film original is a film that is wider than the lead film 40 and has the same length as the lead film 40.
  • a connecting body original fabric is produced by connecting an adhesive film original fabric and a lead film original fabric using connecting tape 50 for connection. And the coupling body original fabric is cut
  • an empty reel (consisting of the core 20 and the flanges 21 and 22) is prepared separately, and the core 20 of the empty reel and the lead film 40 of the film connector 10a are connected using the fixing connection tape 60. Then, the adhesive film 30 is wound around the core 20.
  • the reel body 10 is manufactured through the above steps.
  • the film coupling body 10a is produced by cutting this with a width of less than 1 mm. Therefore, it is possible to cope with the narrowing of the adhesive film 30.
  • the reel unit 10 may be manufactured by any manufacturing method.
  • the adhesive film 30 having a width of less than 1 mm and the lead film 40 are connected by the connecting tape 50 for connection.
  • the connection strength between the adhesive film 30 and the lead film 40 is 5.0 N or more. Therefore, even if the width of the adhesive film 30 is less than 1 mm, the adhesive film 30 can be hardly detached from the lead film 40.
  • this embodiment can be implement
  • connection tape 50 for connection may connect the protrusion part 31a formed in the adhesive film 30 and the lead film 40, and in this case, the adhesive film 30 and the lead film 40 can be connected more firmly. it can.
  • the total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 may be larger than 30% of the circumferential length of the outer peripheral surface of the core 20, and in this case, the adhesive film 30 and the lead film 40 can be connected more firmly.
  • the total length L may be 120 mm or more.
  • the adhesive film 30 and the lead film 40 can be more firmly connected.
  • the ratio between the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 may be 3: 7 to 7: 3.
  • connection strength can be 5.0 N or more within this range. Therefore, according to the present embodiment, the ratio of the adhesion surface length can be adjusted within this range.
  • the connecting tape for connection 50 may be provided on the front and back surfaces of the adhesive film 30 and the lead film 40. In this case, the adhesive film 30 and the lead film 40 can be more firmly connected.
  • the length of the adhesive film 30 may be 50 m or more.
  • the adhesive film 30 becomes long, the adhesive film 30 is easily detached from the lead film 40.
  • the adhesive film 30 is detached from the lead film 40, all of the adhesive film 30 remaining on the reel body 10 is wasted.
  • the adhesive film 30 can be made difficult to come off from the lead film 40.
  • the adhesive layer 32 of the adhesive film 30 may be an anisotropic conductive layer.
  • the adhesive film 30 including the anisotropic conductive layer can be hardly detached from the reel body 10.
  • the film connector 201 includes an adhesive film 210, a lead film 220, a connection tape for connection 230, and a cured layer 240.
  • the adhesive film 210 includes a support film 211 and an adhesive layer 212 formed on the other surface 211b of the support film 211.
  • the support film 211 is a film that becomes a base layer of the adhesive layer 212.
  • the material of the support film 211 is not particularly limited, and may be determined as appropriate according to the application of the adhesive film 210.
  • As a material constituting the support film 211 for example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), PTFE (Polytetrafluoroethylene) or the like is applied to a PTFE (Polytetrafluoroethylene) or the like. Things.
  • These support films 211 can keep the shape of the adhesive film 210 while preventing the adhesive film 210 from drying.
  • the thickness of the support film 211 is not particularly limited.
  • the thickness of the support film 211 may be about 12 to 125 ⁇ m.
  • the surface of the adhesive layer 212 may be covered with a cover film.
  • This cover film may be made of substantially the same material as the support film 211.
  • the color of the support film 211 or the cover film may be white (milky white) or colorless and transparent, for example.
  • the adhesive layer 212 is an adhesive layer and is formed on the other surface 211b of the support film 211.
  • the material of the adhesive layer 212 is not particularly limited, and may be appropriately determined according to the application of the adhesive film 210.
  • the adhesive layer 212 may be made of an anisotropic conductive material.
  • the anisotropic conductive material includes at least a polymerizable compound, a thermosetting initiator, and conductive particles.
  • Polymerizable compounds are resins that polymerize and cure each other.
  • the polymerizable compound is not particularly limited as long as it constitutes an anisotropic conductive material.
  • Examples of the polymerizable compound include an epoxy polymerizable compound and an acrylic polymerizable compound.
  • the epoxy polymerizable compound is a monomer, oligomer, or prepolymer having one or more epoxy groups in the molecule.
  • Examples of the epoxy polymerizable compound include various bisphenol type epoxy resins (bisphenol A type, F type, etc.), novolac type epoxy resins, various modified epoxy resins such as rubber and urethane, naphthalene type epoxy resins, biphenyl type epoxy resins, phenols.
  • Examples include novolac type epoxy resins, stilbene type epoxy resins, triphenolmethane type epoxy resins, dicyclopentadiene type epoxy resins, triphenylmethane type epoxy resins, and prepolymers thereof.
  • the acrylic polymerizable compound is a monomer, oligomer, or prepolymer having one or more acrylic groups in the molecule.
  • acrylic polymerizable compounds include methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylol propane triacrylate, dimethylol tricyclodecane diacrylate, and tetramethylene glycol.
  • Tetraacrylate 2-hydroxy-1,3-diacryloxypropane, 2,2-bis [4- (acryloxymethoxy) phenyl] propane, 2,2-bis [4- (acryloxyethoxy) phenyl] propane, Examples include dicyclopentenyl acrylate, tricyclodecanyl acrylate, tris (acryloxyethyl) isocyanate, and urethane acrylate. That.
  • any one of the polymerizable compounds listed above may be used, or two or more may be used in any combination.
  • the thermosetting initiator is a material that activates by absorbing heat and initiates polymerization of the polymerizable compound.
  • the thermal curing initiator include a thermal anion or thermal cationic curing initiator that cures an epoxy polymerizable compound, and a thermal radical curing initiator that cures an acrylic polymerizable compound.
  • an appropriate thermosetting initiator may be selected depending on the polymerizable compound, but the cured layer 240 is formed of a cured product of the adhesive layer 212 as described later.
  • the hardened layer 240 is formed by irradiating the adhesive layer 212 with light. Therefore, the thermosetting initiator is preferably an initiator that is activated even by light irradiation. That is, the thermosetting initiator is preferably an initiator that also serves as a photocuring initiator.
  • a thermosetting initiator for example, a thermal cationic or thermal radical curing initiator can be mentioned.
  • the adhesive layer 212 has a photocuring start separately from the thermosetting initiator. It is preferable to include an agent. This is because the adhesive layer 212 is cured by light irradiation.
  • the kind of the photocuring initiator is not particularly limited, but the photocationic curing initiator may be incompatible with the thermal anionic curing initiator. For this reason, it is preferable to use a photoradical curing initiator as the photocuring initiator.
  • the thermal anionic curing initiator polymerizes the epoxy polymerizable compound.
  • the radical photocuring initiator polymerizes an acrylic polymerizable compound. Therefore, in this case, the polymerizable compound contained in the adhesive layer 212 is an epoxy polymerizable compound and an acrylic polymerizable compound (so-called epoxy acrylic compatible system).
  • the adhesive layer 212 includes a thermosetting initiator that also serves as a photocuring initiator instead of the above-described photocuring initiator. May be.
  • the thermosetting initiator and the photocuring initiator that are also used as the photocuring initiator are also referred to as “photocurable initiators”. Therefore, the adhesive layer 212 preferably includes a photocurable initiator.
  • the photocurable initiator does not necessarily need to be included in the entire adhesive layer 212, and may be included in the adhesive layer 212 to be cured, that is, in the adhesive layer to be cured. A method of including a photocurable initiator in the adhesive layer to be cured will be described later.
  • Conductive particles are particles for anisotropic conductive connection between a plurality of terminals.
  • the kind of conductive particles is not particularly limited.
  • the conductive particles include metal particles and metal-coated resin particles.
  • the metal particles include metal particles such as nickel, cobalt, copper, silver, gold, or palladium.
  • the metal-coated resin particles include nickel, copper, gold, or palladium on the surface of core resin particles such as styrene-divinylbenzene copolymer, benzoguanamine resin, cross-linked polystyrene resin, acrylic resin, or styrene-silica composite resin.
  • the anisotropic conductive material may contain two or more kinds of conductive particles.
  • the anisotropic conductive material may contain a film-forming resin, various additives, etc. in addition to the above components.
  • the film-forming resin is added to the anisotropic conductive material when the anisotropic conductive material is desired to have a film shape.
  • the type of film forming resin is not particularly limited as long as it satisfies the characteristics described later.
  • various resins such as an epoxy resin, a phenoxy resin, a polyester urethane resin, a polyester resin, a polyurethane resin, an acrylic resin, a polyimide resin, and a butyral resin can be used. In the present embodiment, only one of these film-forming resins can be used, or two or more can be used in any combination.
  • film forming resin is a phenoxy resin from a viewpoint of making film forming property and adhesive reliability favorable.
  • additives that can be added to the anisotropic conductive material include silane coupling agents, inorganic fillers, colorants, antioxidants, and rust inhibitors.
  • the kind of silane coupling agent is not particularly limited.
  • examples of the silane coupling agent include epoxy-based, amino-based, mercapto-sulfide-based, and ureido-based silane coupling agents.
  • the inorganic filler is an additive for adjusting the fluidity and film strength of the anisotropic conductive material, particularly the minimum melt viscosity.
  • the kind of inorganic filler is not particularly limited. Examples of the inorganic filler include silica, talc, titanium oxide, calcium carbonate, and magnesium oxide.
  • the lead film 220 is a member for fixing the adhesive film 210 to a reel body 400 described later.
  • the lead film 220 also has a function as an end film indicating that the adhesive film 210 is finished.
  • the material of the lead film 220 is not particularly limited.
  • the material constituting the lead film 220 may be the same as the material constituting the support film 211.
  • the thickness of the lead film 220 is not particularly limited, and may be approximately the same as the support film 211.
  • the lead film 220 is preferably colored in a color different from that of the support film 211. Thereby, the user of the adhesive film 210 can easily visually recognize the lead film 220.
  • the color of the lead film 220 is not particularly limited, but is preferably a color that exists in the support film 211 and is easily visible. For example, when the support film 211 is white (milky white), it may be black.
  • the connecting tape 230 for connection connects the support film 211 and one surface 211a of the lead film 220 to each other.
  • the adhesive film 210 and the lead film 220 are connected by the connecting tape for connection 230 and a cured layer 240 described later.
  • the type of the connecting tape for connection 230 is not particularly limited as long as it can connect the adhesive film 210 and the lead film 220.
  • Examples of the connecting tape 230 for connection include a silicon tape.
  • the length of the connecting tape for connection 230 is not particularly limited, but if it is too long, the workability when attaching the connection tape for connection 230 may be reduced. Specifically, when the support film 211 and the lead film 220 are connected using the connection tape for connection 230, there is a possibility that the connection tape for connection 230 is wrinkled. From such a viewpoint, the upper limit value of the length L13 of the connecting tape for connection 230 is preferably less than 120 mm, and more preferably 110 mm or less. That is, when the length of the connecting tape for connection 230 is 120 mm or more, wrinkles may occur in the connecting tape for connection rarely.
  • the length of the connecting tape for connection 230 defined in the first embodiment is used, there is no practical problem even if such wrinkles are included. That is, this wrinkle does not cause any particular trouble in subsequent processes such as slitting, winding and drawing. Moreover, the quality of the adhesive film is not practically deteriorated by wrinkles.
  • the connecting tape for connection 230 is too short, the connection strength between the adhesive film 210 and the lead film 220 may be reduced. Furthermore, workability may be reduced. For this reason, the length L13 of the connecting tape for connection 230 is preferably 10 mm or more, and more preferably 30 mm or more.
  • the ratio L11: L12 between the length L11 of the portion bonded to the support film 211 and the length L12 of the portion bonded to the lead film 220 is not particularly limited, but the connection strength between the adhesive film 210 and the lead film 220 is not limited.
  • the ratio may be 3: 7 to 7: 3.
  • the thickness of the connecting tape for connection 230 is not particularly limited, and may be set as appropriate from the viewpoint of winding and handling.
  • the end of the adhesive film 210 and the end of the lead film 220 are adjacent to each other, but a gap may be formed between them. However, it is preferable that both do not overlap. When both are overlapped, the overlapping portion becomes a step. This level difference may cause the same problem as the unevenness at the time of ultrasonic connection.
  • the cured layer 240 includes a cured product of the adhesive layer 212 and is formed from the other surface 211 b of the support film 211 to the other surface 220 b of the lead film 220. Thereby, the hardened layer 240 connects the adhesive film 210 and the lead film 220.
  • the length L14 of the cured layer 240 on the support film 211 side is preferably 150 mm or more, more preferably 300 mm or more, and even more preferably 400 mm or more. . Further, if the length L14 becomes too long, the film length that can be used for connection decreases, so it is desirable that the length L14 is short. As an example, the length L14 is preferably 550 mm or less, more preferably 500 mm or less, and even more preferably 450 mm or less. Further, the length L15 on the lead film 220 side of the hardened layer 240 may be substantially equal to the length of the lead film 220, but of course may be shorter than the lead film 220.
  • the cured layer 240 includes a cured product of the adhesive layer 212, the cured layer 240 has transparency. This is because the adhesive layer 212 has higher crystallinity due to curing. For this reason, even if the hardened layer 240 is formed on the lead film 220, the lead film 220 is visible.
  • the degree of cure (reaction rate) of the cured layer 240 is not particularly limited, but is preferably 50% or more. In this case, the connection strength between the adhesive film 210 and the lead film 220 can be further increased. This degree of cure (reaction rate) was determined by using an infrared spectrophotometer (product number FT / IR-4100, manufactured by JASCO Corporation), the amount of attenuation of functional groups that contribute to the polymerization before and after the curing treatment (% ).
  • the hardened layer 240 is a portion that cannot be used as the adhesive film 210, it is preferable that it can be easily distinguished from the adhesive layer 212.
  • the cured layer 240 includes a cured product of the adhesive layer 212, and thus the thickness is slightly smaller than that of the adhesive layer 212. In this respect, the hardened layer 240 is distinguishable from the adhesive layer 212.
  • the cured layer 240 may be colored. Although the method of coloring the hardened layer 240 will be described later, generally, an adhesive composition containing a colorant may be contained in the adhesive layer 212 before the adhesive layer 212 is cured.
  • the kind of the colorant is not particularly limited, and any colorant may be used as long as it can be applied to the anisotropic conductive material.
  • the width of the film connector 201 is not particularly limited, but may be less than 1 mm. According to this embodiment, even if the width
  • the width of the film connector may be 0.8 mm or less, or 0.6 mm or less.
  • variety of the film coupling body 201 may be the same width as an adhesive film (an adhesive layer, a support film).
  • connection strength between adhesive film and lead film The connection strength between the adhesive film 210 and the lead film 220 may be adjusted according to the characteristics required of the reel unit 400, but is preferably 5.0 N or more.
  • the connection strength includes the length L13, L11: L12 of the connecting tape for coupling 230 described above, the length L14 of the cured layer 240 on the support film 211 side, the length L15 of the cured layer 240 on the lead film 220 side, and cured.
  • the degree of cure of the layer 240 can be adjusted. When these parameters are values within a preferable range, the connection strength can be 5.0 N or more. More preferably, the connection strength is 5.5 N or more.
  • connection strength measuring method Next, a connection strength measuring method will be described with reference to FIG. First, the lead film 220 and the hardened layer 240 are fixed to the clamp 310 fixed to the test table 300. Next, the adhesive film 210 is fixed to the tensile tester 320. Here, since the adhesive film 210 is long, the adhesive film 210 is fixed to the tensile tester 320 after cutting the adhesive film 210 in the vicinity of the connection portion with the lead film 220. Next, the tensile tester 320 is pulled up vertically. As the tensile tester 320 is pulled up, the load applied to the tensile tester 320 increases and eventually the adhesive film 210 is separated from the lead film 220. At this time, the load applied to the tensile tester 320 is measured, and the measured value is defined as the connection strength.
  • the reel body 400 includes a film coupling body 201, a winding core 420, flanges 421 and 422, and a fixing connection tape 260.
  • the winding core 420 has a cylindrical shape and serves as a rotation axis of the reel body 400.
  • the outer diameter (the diameter of the outer diameter surface) of the winding core 420 is not particularly limited, and may be appropriately determined according to the use of the reel unit 400 and the like.
  • the outer diameter (the diameter of the outer diameter surface) of the winding core 420 may be about 45 to 95 mm.
  • the lead film 220 and the hardened layer 240 of the film coupling body 201 are fixed to the outer diameter surface 420 a of the core 420 by a fixing connection tape 260.
  • the length L15 on the lead film 220 side of the hardened layer 240 is shorter than the lead film 220, only the lead film 220 may be fixed to the outer diameter surface 420a.
  • the film connector 201 is wound around the core 420.
  • a film winding body is configured by winding the film coupling body 201 around the winding core 420.
  • connection tape for fixing 260 is not particularly limited, but from the viewpoint of securing the connection strength between the adhesive film 210 and the lead film 220, the same type of tape as the connection tape for connection 230 is preferable.
  • the thickness of the fixing connection tape 260 is not particularly limited, and may be set as appropriate from the viewpoint of winding and handling.
  • the flanges 421 and 422 are provided at both ends of the core 420 in the axial direction, respectively.
  • the flanges 421 and 422 are circular members and are attached to the core 420 so as to be parallel to each other.
  • the film connector 201 is accommodated between the flanges 421 and 422.
  • a support film original fabric 271 and a lead film original fabric 280 are prepared.
  • the original support film 271 is a film that is wider than the support film 211 and has the same length as the support film 211.
  • the lead film original fabric 280 is a film that is wider than the lead film 220 and has the same length as the lead film 220.
  • one surface 271a and 280a of the support film original fabric 271 and the lead film original fabric 280 are connected to each other with a connection tape 230 for connection (connection process). Thereby, the raw fabric connector 201a is produced.
  • an adhesive composition Y having the same composition as the adhesive layer 212 is produced.
  • the raw fabric connector 201a is set on the transport device.
  • This conveying apparatus can convey the original fabric connector 201a in the direction of arrow A.
  • the coating apparatus 500 and the light source 600 are installed in the conveying apparatus.
  • the type of coating apparatus 500 is not particularly limited, and may be, for example, a gravure coater, a wire bar coater, or a die coater.
  • the light source 600 is a light source that emits light having a wavelength capable of curing the adhesive layer original fabric 272, and may be, for example, an ultraviolet lamp. The irradiation conditions of the light source 600 may be adjusted so as to obtain a desired degree of curing.
  • the light source 600 is installed downstream of the coating apparatus 500 in the transport direction.
  • the adhesive composition Y is applied onto the other surfaces 271b and 280b of the support film original fabric 271 and the lead film original fabric 280 using the coating apparatus 500 while conveying the original fabric connector 201a in the direction of arrow A.
  • Work adheresive layer forming step.
  • the adhesive layer original fabric 272 is formed on the other surfaces 271b and 280b.
  • light is irradiated from the light source 600 to the original adhesive layer fabric 272 at the timing when the irradiation start position reaches the light source 600 (curing step).
  • the irradiation start position is a position away from the boundary portion between the support film original fabric 271 and the lead film original fabric 280 by the distance L14 toward the support film original fabric 271 side.
  • the irradiation of light from the light source 600 is stopped at the timing when the irradiation end position reaches the light source 600.
  • the irradiation end position is a position away from the boundary portion between the support film original fabric 271 and the lead film original fabric 280 by the distance L15 toward the lead film original fabric 280 side.
  • the adhesive layer original fabric 272 that exists between the irradiation start position and the irradiation end position becomes the adhesive layer to be cured.
  • the adhesive layer original fabric 272 formed on the boundary portion of the support film original fabric 271 and the lead film original fabric 280 and its peripheral portion is cured. That is, the cured layer original fabric 290 is formed on the original fabric connector 201a.
  • a film connector original fabric 201b shown in FIG. 18 is created.
  • the film coupling body 201b is produced by slitting the film coupling body fabric 201b to a desired width.
  • the film connector 201 can be produced by the method described above.
  • the adhesive composition may not include a photocurable initiator.
  • the thermal anionic curing agent is included in the adhesive composition, the thermal anionic curing agent is not activated by light irradiation.
  • the film coupling body 201 cannot be produced by the method described above.
  • the film connector 201 may be produced by the following method. That is, an auxiliary coating device is installed upstream of the light source 600.
  • the auxiliary coating apparatus applies the auxiliary adhesive composition onto the adhesive layer original fabric 270.
  • the auxiliary adhesive composition includes a photocurable initiator and a polymerizable compound that is cured by the photocurable initiator.
  • the auxiliary adhesive composition includes a photo radical curing initiator and an acrylic polymerizable compound.
  • the auxiliary adhesive composition may contain the colorant described above. Thereby, the hardened layer 240 is colored. Then, the auxiliary coating device is driven at the timing when the irradiation start position reaches the auxiliary coating device.
  • the auxiliary coating apparatus applies the auxiliary adhesive composition onto the adhesive layer original fabric 270 (curing preparation step).
  • the auxiliary coating device is stopped at the timing when the irradiation end position reaches the auxiliary coating device.
  • the auxiliary adhesive composition is contained in the curing target adhesive layer. Accordingly, the adhesive layer to be cured is cured by light irradiation from the light source 600.
  • the auxiliary coating device may be any device that can contain the auxiliary adhesive composition in the adhesive layer raw fabric 272.
  • the auxiliary coating apparatus may be a coating apparatus similar to the above-described coating apparatus 500, or may be a spraying apparatus that can spray the auxiliary adhesive composition onto the original adhesive layer 272.
  • Example 1 (Production of linked body)
  • the film connector 10a was produced by the following steps. 60 parts by mass of a phenoxy resin (YP50 manufactured by Nippon Steel Chemical Co., Ltd.), 36 parts by mass of a radical polymerizable resin (EB-600 manufactured by Daicel-Cytec), and a silane coupling agent (KBM-503 manufactured by Shin-Etsu Chemical Co., Ltd.) 2
  • An adhesive composition was prepared by mixing 2 parts by mass of a mass part and a reaction initiator (Perhexa C manufactured by NOF Corporation).
  • conductive particles (AUL704 manufactured by Sekisui Chemical Co., Ltd.) were dispersed in this adhesive composition so that the particle surface density in the adhesive layer 32 was 8000 particles / mm 2 .
  • the adhesive composition in which the conductive particles were dispersed was applied to a thickness of 14 ⁇ m on a PET film (thickness 50 ⁇ m, support film original fabric) having a length of more than 50 m. Thereby, the adhesive layer 32 was formed on the surface of the support film original fabric. That is, an adhesive film original fabric was produced.
  • the adhesive layer 32 was an anisotropic conductive layer.
  • the protruding portion 31a was formed by removing the adhesive layer 32 from one end of the adhesive film original in the length direction.
  • a PET film similar to the support film original fabric was prepared as the lead film original fabric.
  • the lead film original fabric and the protruding portion 31a of the adhesive film original fabric were connected by a connecting tape 50 for connection, thereby producing a connector original fabric.
  • the connection tape 50 for connection Adock S (product number: S-100B) manufactured by Sanei Kaken Co., Ltd. was used as the connection tape 50 for connection.
  • This connecting tape for connection 50 is an example of a silicon tape.
  • the length of the connecting tape was 120 mm, and the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 60 mm.
  • L1: L2 1: 1.
  • the edge part (end part of the protrusion part 31a) of the adhesive film original fabric, and the edge part of a lead film original fabric adjoin.
  • the joined film body was cut into a width of 0.8 mm to produce a joined film body 10a.
  • connection strength was measured by the measurement method described above. Tensilon manufactured by A & D was used as the tensile tester. As a result, the connection strength was 5.2N.
  • Example 2 The same processing as in Example 1 was performed except that the length of the connecting tape was 300 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 150 mm.
  • Example 3 The same processing as in Example 1 was performed, except that the length of the connecting tape was 400 mm, the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 200 mm.
  • Example 4 The same treatment as in Example 1 was performed, except that the raw connecting body was cut into a width of 0.6 mm.
  • Example 5 The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 3: 7.
  • Example 6 The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 7: 3.
  • the length of the connecting tape was 30 mm, and the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 15 mm. Moreover, the connecting body original fabric was cut into a width of 1.5 mm. Except for the above, the same processing as in Example 1 was performed.
  • Example 1 The same processing as in Example 1 was performed except that the length of the connecting tape was 30 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 15 mm.
  • Example 2 The same processing as in Example 1 was performed except that the length of the connecting tape was 60 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 30 mm.
  • Example 3 The same processing as in Example 1 was performed except that the length of the connecting tape was 90 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 45 mm.
  • Example 4 The same processing as in Example 4 was performed except that the length of the connecting tape was 30 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 15 mm.
  • Example 5 The same processing as in Example 4 was performed except that the length of the connecting tape was 60 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 30 mm.
  • Example 6 The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was set to 2: 8.
  • Example 7 The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 8: 2.
  • Table 1 summarizes the structures, connection strengths, and tape detachment rates of the above examples.
  • FIG. 7 shows the connection strength of the reference example and the connection strength of Comparative Example 1 in comparison.
  • Reference Example and Comparative Example 1 differ only in the adhesive film width.
  • the connection strength is increased by increasing the width of the adhesive film, and as a result, the adhesive film 30 is unlikely to be detached from the lead film 40.
  • the reference example cannot meet the needs for narrowing the adhesive film width. Therefore, in the embodiment, the connecting tape 50 for connection is lengthened while the width of the adhesive film is reduced.
  • FIG. 8 shows the correspondence between the connection tape length (specifically, the total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52) and the connection strength.
  • FIG. 9 shows the correspondence between the tape detachment occurrence rate and the connection strength.
  • FIG. 10 shows the correspondence between the connection tape length and the tape detachment occurrence rate.
  • the adhesive film 30 is less likely to be detached from the lead film 40.
  • the tape detachment occurrence rate is zero.
  • the connection strength is 5.0 N or more. Therefore, it can be seen that when the connection strength is 5.0 N or more, the tape removal occurrence rate becomes zero.
  • the connection strength is 5 by setting the connection tape length to 120 mm or more (specifically, the total length L is set to 120 mm or more). It turns out that it becomes more than 0.0N.
  • the connection strength when the length of the connection tape is 300 mm, the connection strength almost the same as that of the reference example is realized. However, even if the connection tape length is 400 mm, the connection strength hardly changes. Therefore, it can be seen that the connection strength reaches the upper limit when the length of the connection tape is increased to some extent.
  • the connecting tape length is 90 mm
  • the connecting tape length is 30% of the circumferential length of the outer peripheral surface of the core 20.
  • the connecting tape length is 40% of the circumferential length of the outer peripheral surface of the core 20.
  • the connection tape length is 300 mm
  • the connection tape length is equal to or longer than one circumference of the outer peripheral surface of the core 20. Therefore, it can be seen that the length of the connecting tape is preferably larger than 30% of the diameter of the core 20, more preferably 40% or more, and even more preferably one circumference or more of the core 20. .
  • the connection strength is 5.0 N or more. According to Example 4 and Comparative Examples 4 and 5, even when the adhesive film width is 0.6 mm, the connection strength can be 5.0 N or more by setting the connection tape length to 120 mm. it can.
  • FIG. 12 shows the correspondence relationship between the ratio of the adhesive surface length (the length L1 of the adhesive surface 51 to the length L2 of the adhesive surface 52) and the adhesive strength.
  • the ratio of the adhesive surface lengths is not necessarily 1: 1. That is, in this example, when the ratio of the adhesive surface lengths is in the range of 3: 7 to 7: 3, the adhesive strength is 5.0 N or more. Therefore, it can be seen that the ratio of the adhesive surface lengths can be adjusted within this range.
  • Example 7 (Production of linked body)
  • the film coupling body 201 was produced by the following steps. 20 parts by mass of phenoxy resin (YP70 manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.), 30 parts by mass of liquid epoxy resin (EP828 manufactured by Mitsubishi Chemical Co., Ltd.), 20 parts by mass of solid epoxy resin (YD014 manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.)
  • An adhesive composition was prepared by mixing 5 parts by mass of LW-S1) and 30 parts by mass of conductive particles.
  • covered the zinc oxide in the ratio of 20 mass% with respect to the mass of a conductive base material particle was used for the conductive base material particle (AUL704 by Sekisui Chemical Co., Ltd.) as a conductive particle.
  • a connecting tape for connection 230 Adoc S (product number: S-100B) manufactured by Sanei Kaken Co., Ltd.
  • an adhesive layer original fabric 272 and a cured layer original fabric 290 were formed on the other surfaces 271b and 280b of the support film original fabric 271 and the lead film original fabric 280 by the above-described method.
  • the thickness of the adhesive layer original fabric 272 was 14 ⁇ m.
  • the length L14 of the cured layer original fabric 290 on the side of the support film original fabric 271 was 150 mm, and L15 was the same length as the lead film original fabric 280.
  • the adhesive layer original fabric 272 was cured using an ultraviolet lamp.
  • the wavelength of ultraviolet rays was 365 nm, and the integrated light quantity was 300 mJ / cm 2 .
  • the hardening degree of the cured layer original fabric 290 was measured by the method mentioned above, the hardening degree was 65%.
  • a film-coupled original fabric 201b was produced.
  • the film coupling body 201 for a test was produced by slitting the raw film coupling body 201b to a width of 0.8 mm.
  • connection strength was measured by the measurement method described above. Tensilon manufactured by A & D was used as the tensile tester. The connection strength was measured five times, and the average value of the measurement results was taken as the connection strength. As a result, the connection strength was 5.1N.
  • Example 7 The results are summarized in Table 2.
  • the connection strength, the presence or absence of wrinkles, and the rate of tape detachment were comprehensively evaluated. That is, the overall evaluation was “A (excellent)” when the connection strength met all the requirements of 5.5 N or higher, no wrinkles, and a tape release rate of 0. When the connection strength satisfies all the requirements of 5.0 N or more and less than 5.5 N, no wrinkles, and a tape separation occurrence rate of 0, the overall evaluation was “B + (inferior to A but superior)”.
  • connection strength is 5.0N or more and less than 5.5N and there are wrinkles but there is no problem in practical use
  • the overall evaluation is “B ⁇ (B + inferior to B + but no problem in practical use) when all the requirements of the tape release rate 0 are satisfied. ) ”.
  • the comprehensive evaluation was set to “C (practically defective)”.
  • Example 8 The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was 200 mm. The results are summarized in Table 2.
  • Example 9 The same treatment as in Example 7 was performed except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 300 mm. The results are summarized in Table 2.
  • Example 10 The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 400 mm. The results are summarized in Table 2.
  • Example 12 when connecting one surface 271a, 280a of the support film original fabric 271 and the lead film original fabric 280 with the connection tape 230 for connection, some wrinkles entered the connection tape 230 for connection. This wrinkle did not cause any particular trouble in subsequent processes such as slitting, winding and drawing. Furthermore, the transfer of wrinkles to the adhesive film 210 was not confirmed. For this reason, there was no problem in practical use. The results are summarized in Table 2.
  • Example 13 The same treatment as in Example 7 was performed except that the width of the film connector 201 was 0.6 mm. The results are summarized in Table 2.
  • Example 8 The same treatment as in Example 7 was performed except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 100 mm. The results are summarized in Table 2.
  • Example 9 The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was 120 mm. The results are summarized in Table 2.
  • Example 10 The same treatment as in Example 7 was performed except that the connecting tape for connection 230 was attached to both surfaces of the support film original fabric 271 and the lead film original fabric 280 and the cured layer original fabric 290 was not formed. The results are summarized in Table 2.
  • Examples 7 to 13 a high connection strength and a rate of occurrence of tape detachment of 0 could be achieved.
  • the connection strength was weak and the rate of tape detachment increased. Therefore, in Examples 7 to 13, it was possible to make it difficult for the adhesive film to come off the lead film even when the width of the adhesive film became narrow.
  • L14 is 300 to 400 mm
  • the connection strength is further increased. Therefore, L14 is preferably 300 to 400 mm.
  • the connecting tape 230 for connection was wrinkled, workability was slightly reduced. Therefore, the length of the connecting tape for connection 230 is preferably less than 120 mm.

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Abstract

The purpose of the present invention is to make an adhesive film (30) be less susceptible to being removed from a lead film (40) when the width of the adhesive film (30) is reduced. The present invention provides a reel body (10) equipped with: a cylindrical winding core (20); the lead film (40) connected to the circumferential surface of the winding core (20); the adhesive film (30) that has a width less than 1 mm and is wound around the winding core (20); and a connection tape (50) that connects the lead film (40) and the adhesive film (30). The connection strength of the connection tape (50) between the lead film (40) and the adhesive film (30) is 5.0 N or more.

Description

リール体、フィルム連結体、フィルム巻装体、及びフィルム連結体の製造方法REEL BODY, FILM CONNECTED BODY, FILM WINDING BODY, AND METHOD FOR PRODUCING FILM CONNECTED BODY
　本発明は、リール体、フィルム連結体、フィルム巻装体、及びフィルム連結体の製造方法に関する。 The present invention relates to a reel body, a film coupling body, a film winding body, and a method for manufacturing a film coupling body.
　例えば特許文献１、２、４、５に開示されるように、接着フィルムは、リールに巻き取られた状態で提供される場合がある。接着フィルムが巻き取られたリール、即ちリール体は、概略的には、円筒形状の巻芯と、巻芯に巻きつけられる接着フィルムとを備える。接着フィルムの長さ方向の一端部にはリードフィルムが接続されており、このリードフィルムは巻芯の周面に固定される。すなわち、接着フィルムはリードフィルムを介して巻芯に固定された上で、巻芯に巻きつけられる。接着フィルムは、リール体から引き出されて使用される。 For example, as disclosed in Patent Documents 1, 2, 4, and 5, the adhesive film may be provided in a state of being wound on a reel. A reel around which an adhesive film is wound, that is, a reel body, generally includes a cylindrical core and an adhesive film wound around the core. A lead film is connected to one end of the adhesive film in the length direction, and the lead film is fixed to the peripheral surface of the core. That is, the adhesive film is wound around the core after being fixed to the core via the lead film. The adhesive film is used by being pulled out from the reel body.
　ところで、接着フィルムの幅を狭くしたいというニーズが年々強くなってきている。例えば、特許文献１、２、４、５には、接着フィルムの一例として異方性導電フィルムが開示されているが、異方性導電フィルムの分野においては、特にこのようなニーズが強く、例えば幅が１ｍｍ未満の異方性導電フィルムを使用したいというニーズがある。その理由としては、例えば以下のものが挙げられる。 By the way, the need to narrow the width of the adhesive film is getting stronger year by year. For example, in Patent Documents 1, 2, 4, and 5, an anisotropic conductive film is disclosed as an example of an adhesive film. However, in the field of anisotropic conductive films, such a need is particularly strong. There is a need to use an anisotropic conductive film having a width of less than 1 mm. Examples of the reason include the following.
　異方性導電フィルムは、例えば、各種ディスプレイの外枠（いわゆる額縁）内に配置される構成要素同士を接着するために使用される。異方性導電フィルムが使用されるディスプレイは多様である。例えば、異方性導電フィルムは、各種の据置型ディスプレイの他、携帯型ディスプレイ（例えば、スマートフォン、携帯電話、及びウェアラブルデバイス用のディスプレイ等）にも使用される。そして、これらのディスプレイの外枠は主に表示面積の割合を増やすため、年々狭くなってきている。このため、異方性導電フィルムの幅を狭くしたいというニーズが年々強くなってきている。 The anisotropic conductive film is used, for example, to bond components disposed in the outer frame (so-called frame) of various displays. There are various displays in which anisotropic conductive films are used. For example, the anisotropic conductive film is used not only for various types of stationary displays but also for portable displays (for example, displays for smartphones, mobile phones, and wearable devices). And the outer frame of these displays is becoming narrower year by year mainly to increase the proportion of the display area. For this reason, the need to narrow the width of the anisotropic conductive film is increasing year by year.
特開２００６－２１８８６７号公報JP 2006-218867 A 国際公開第２０１０／０８４７２８号公報International Publication No. 2010/084728 特開２００５－２９７０５５号公報Japanese Patent Laying-Open No. 2005-297055 特開２００１－２８４００５号公報JP 2001-284005 A 特開２００９－２８９７５５号公報JP 2009-289755 A
　しかし、接着フィルムの幅が狭くなると、接着フィルムとリードフィルムとの接続強度が弱くなりやすいという問題があった。接続フィルムとリードフィルムとの接続強度が弱くなると、接着フィルムにテンションが掛かった際に接着フィルムがリードフィルムから外れやすくなる。接着フィルムにテンションが掛かるケースとしては、例えば、接着フィルムをリール体から引き出すケース等が挙げられる。リール体中の接着フィルムがリードフィルムから外れると、そのリール体は使用できなくなってしまう。接着フィルムがリードフィルムから外れた場合、接着フィルムをリール体から引き出せなくなるからである。具体的には、接着フィルムをリール体から引き出そうとしても、リール体が空回りするだけで接着フィルムがリール体から引き出されない。したがって、リール体に残った接着フィルムが全て無駄になってしまう。 However, when the width of the adhesive film becomes narrow, there is a problem that the connection strength between the adhesive film and the lead film tends to be weakened. When the connection strength between the connection film and the lead film is weakened, the adhesive film is easily detached from the lead film when tension is applied to the adhesive film. Examples of the case where tension is applied to the adhesive film include a case where the adhesive film is pulled out from the reel body. If the adhesive film in the reel body is detached from the lead film, the reel body cannot be used. This is because when the adhesive film is detached from the lead film, the adhesive film cannot be pulled out from the reel body. Specifically, even if the adhesive film is to be pulled out from the reel body, the adhesive film is not pulled out from the reel body only by spinning the reel body. Therefore, all of the adhesive film remaining on the reel body is wasted.
　そして、リール体に残っている接着フィルムが多いほど、接着フィルムの引き出し時に大きなテンションが接着フィルムに掛かる。したがって、リール体に残っている接着フィルムが多いほど、接着フィルムはリードフィルムから外れやすい。すなわち、接着フィルムの幅が狭くなると、大量の接着フィルムが無駄になる可能性が高くなる。特に、近年では、接着フィルムの長尺化のニーズがある。リール体を用いた操業において、リール体の取り替え回数を低減するためである。このため、リール体には大量の接着フィルムが巻きつけられていることが多い。 And the more adhesive film that remains on the reel body, the more tension is applied to the adhesive film when the adhesive film is pulled out. Therefore, the more adhesive film remaining on the reel body, the easier it is for the adhesive film to come off the lead film. That is, when the width of the adhesive film is narrowed, there is a high possibility that a large amount of the adhesive film is wasted. In particular, in recent years, there is a need to lengthen the adhesive film. This is to reduce the number of replacements of the reel body in the operation using the reel body. For this reason, a lot of adhesive films are often wound around the reel body.
　また、リール体を用いた操業では、接着フィルムをリール体から引き出す引出工程と、それに続く各種の後工程とを１つのラインで行う場合がある。このラインの操業中に接着フィルムがリードフィルムから外れると、引出工程を一旦停止してリール体を交換する必要がある。上述したように、リール体中の接着フィルムがリードフィルムから外れると、そのリール体は使用できなくなるからである。そして、このラインでは、引出工程がストップすると、それに続く後工程も全てストップしてしまう。したがって、ラインの操業に大幅な遅れが生じてしまう。そして、上述したように、接着フィルムの幅が狭くなると、接着フィルムにテンションが掛かった際に接着フィルムがリードフィルムから外れやすくなる。したがって、接着フィルムの幅が狭くなると、ラインの操業に遅れが生じる可能性が高くなってしまう。 Also, in the operation using the reel body, there are cases where the drawing process for drawing the adhesive film from the reel body and the subsequent various subsequent processes are performed in one line. If the adhesive film is detached from the lead film during the operation of this line, it is necessary to temporarily stop the drawing process and replace the reel body. As described above, when the adhesive film in the reel body is detached from the lead film, the reel body cannot be used. In this line, when the drawing process is stopped, all subsequent processes are also stopped. Therefore, a great delay occurs in the operation of the line. And as mentioned above, when the width | variety of an adhesive film becomes narrow, when a tension | tensile_strength is applied to an adhesive film, an adhesive film will remove | deviate from a lead film easily. Therefore, when the width of the adhesive film is narrowed, there is a high possibility that the line operation will be delayed.
　また、上記のラインでは、接着フィルムを所定長さに引き出した後にリール体の回転を一旦停止する工程、接着フィルムを切り出す工程、リール体の回転を再開する工程が行われる場合がある。これらの工程中には、大きなテンションが接着フィルムに掛かる。したがって、接着フィルムの幅が狭くなると、これらの工程中にも接着フィルムがリードフィルムから外れやすくなってしまう。さらに、リール体の巻芯に駆動力を作用させるラインでは、リール体の回転開始時、停止時に特に大きなテンションが接着フィルムに掛かる。したがって、リール体の巻芯に駆動力を作用させるラインでは、接着フィルムがリードフィルムから特に外れやすい。また、異方性接続のライン速度は生産性に直結するため、これを速くすることが求められる。そのため、リール体はテンションの変動が急峻になる傾向にある。 Further, in the above line, there are cases where a process of temporarily stopping the rotation of the reel body after drawing the adhesive film to a predetermined length, a process of cutting out the adhesive film, and a process of restarting the rotation of the reel body may be performed. During these processes, a large tension is applied to the adhesive film. Therefore, when the width of the adhesive film is narrowed, the adhesive film is easily detached from the lead film during these steps. Further, in a line in which a driving force is applied to the reel core, a particularly large tension is applied to the adhesive film when the reel body starts and stops rotating. Therefore, the adhesive film is particularly easily detached from the lead film in a line in which a driving force is applied to the reel core. Moreover, since the line speed of the anisotropic connection is directly related to productivity, it is required to increase the speed. Therefore, the reel body tends to have a sharp fluctuation in tension.
　このように、接着フィルムの幅が狭くなると、接着フィルムがリードフィルムから外れやすくなる。そして、接着フィルムがリードフィルムから外れると、リール体に残った接着フィルムが全て無駄になる、リール体を用いた操業に大幅な遅れが生じるといった問題が生じる。このため、接着フィルムとリードフィルムとの強度を改善する技術が切望されていた。 Thus, when the width of the adhesive film is narrowed, the adhesive film is easily detached from the lead film. When the adhesive film is removed from the lead film, all of the adhesive film remaining on the reel body is wasted, and there is a problem that the operation using the reel body is greatly delayed. For this reason, the technique which improves the intensity | strength of an adhesive film and a lead film has been desired.
　例えば、特許文献３には、複数の部材を接続する技術として、いわゆる超音波接続技術が開示されている。この技術では、一方の部材を他方の部材に押し当てた状態で、これらの部材に超音波振動を与える。 For example, Patent Document 3 discloses a so-called ultrasonic connection technique as a technique for connecting a plurality of members. In this technique, one member is pressed against the other member, and ultrasonic vibration is applied to these members.
　しかし、この技術では、接着フィルムとリードフィルムとの接続強度を十分に大きくすることができなかった。さらに、この技術では、接着フィルムとリードフィルムとの接続部分に凹凸が形成されてしまう。したがって、接着フィルムを巻芯に巻きつけた際に、この凹凸が接着フィルムに転写されてしまう。具体的には、接着フィルムのうち、接着フィルムとリードフィルムとの接続部分上に巻きつけられる部分に当該接続部分の凹凸が転写されてしまう。この結果、接着フィルムの品質が低下してしまう。例えば、接着フィルムが異方性導電フィルムとなる場合、異方性導電フィルムの異方性が劣化してしまう可能性ある。また、幅が１ｍｍ未満の接着フィルムとリードフィルムとを超音波振動によって接続することは現状の技術ではほぼ実現不可能である。さらに、この技術では、超音波発振装置等を別途用意する必要が生じる。 However, with this technology, the connection strength between the adhesive film and the lead film could not be increased sufficiently. Furthermore, in this technique, irregularities are formed in the connection portion between the adhesive film and the lead film. Therefore, when the adhesive film is wound around the core, the unevenness is transferred to the adhesive film. Specifically, the unevenness | corrugation of the said connection part will be transcribe | transferred to the part wound on the connection part of an adhesive film and a lead film among adhesive films. As a result, the quality of the adhesive film is degraded. For example, when the adhesive film is an anisotropic conductive film, the anisotropy of the anisotropic conductive film may be deteriorated. In addition, it is almost impossible to connect the adhesive film having a width of less than 1 mm and the lead film by ultrasonic vibration. Furthermore, with this technique, it is necessary to prepare an ultrasonic oscillator or the like separately.
　そこで、本発明は、上記問題に鑑みてなされたものであり、本発明の目的とするところは、接着フィルムの幅が狭くなった場合であっても、接着フィルムをリードフィルムから外れにくくすることが可能な、新規かつ改良されたリール体、フィルム連結体、フィルム巻装体、及びフィルム連結体の製造方法を提供することにある。 Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to make it difficult for the adhesive film to come off the lead film even when the width of the adhesive film becomes narrow. It is an object of the present invention to provide a new and improved reel body, film coupling body, film winding body, and film coupling body manufacturing method capable of achieving the above.
　上記課題を解決するために、本発明のある観点によれば、円筒形状の巻芯と、巻芯の周面に連結されるリードフィルムと、巻芯に巻きつけられる幅１ｍｍ未満の接着フィルムと、リードフィルムと接着フィルムとを接続する接続テープと、を備え、接続テープによるリードフィルムと接着フィルムとの接続強度が５．０Ｎ以上である、リール体が提供される。 In order to solve the above problems, according to an aspect of the present invention, a cylindrical core, a lead film connected to the peripheral surface of the core, and an adhesive film having a width of less than 1 mm wound around the core And a connecting tape for connecting the lead film and the adhesive film, and a reel body having a connection strength of 5.0 N or more between the lead film and the adhesive film by the connecting tape is provided.
　ここで、接着フィルムは、支持フィルムと支持フィルム上に形成される接着層とを含み、支持フィルムは、接着層に対して長さ方向に突出した突出部を有し、接続テープは、支持フィルムの突出部とリードフィルムとを接続してもよい。 Here, the adhesive film includes a support film and an adhesive layer formed on the support film, the support film has a protruding portion protruding in the length direction with respect to the adhesive layer, and the connection tape includes the support film. You may connect a protrusion part and a lead film.
　また、接着フィルムと接続テープとの接着面長さと、リードフィルムと接続テープとの接着面長さとの合計長さは、巻芯の外周面の円周長さの３０％より大きくてもよい。 Further, the total length of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape may be larger than 30% of the circumferential length of the outer peripheral surface of the core.
　また、接着フィルムと接続テープとの接着面長さと、リードフィルムと接続テープとの接着面長さとの合計長さは、１２０ｍｍ以上であってもよい。 The total length of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape may be 120 mm or more.
　また、接着フィルムと接続テープとの接着面長さと、リードフィルムと接続テープとの接着面長さとの比は、３：７～７：３であってもよい。 Further, the ratio of the adhesive surface length between the adhesive film and the connecting tape and the adhesive surface length between the lead film and the connecting tape may be 3: 7 to 7: 3.
　また、接続テープは、接着フィルム及びリードフィルムの表裏表面に設けられてもよい。 Further, the connection tape may be provided on the front and back surfaces of the adhesive film and the lead film.
　また、接着フィルムの長さは５０ｍ以上であってもよい。 Further, the length of the adhesive film may be 50 m or more.
　また、接着フィルムは異方性導電材料を含んでいてもよい。 Further, the adhesive film may contain an anisotropic conductive material.
　本発明の他の観点によれば、リールの巻芯の周面に連結されるリードフィルムと、巻芯に巻きつけられる幅１ｍｍ未満の接着フィルムと、リードフィルムと接着フィルムとを接続する接続テープと、を備え、接続テープによるリードフィルムと接着フィルムとの接続強度が５．０Ｎ以上である、フィルム連結体が提供される。 According to another aspect of the present invention, a lead film coupled to the peripheral surface of the reel core, an adhesive film having a width of less than 1 mm wound around the core, and a connection tape connecting the lead film and the adhesive film. And a film coupling body in which the connection strength between the lead film and the adhesive film by the connection tape is 5.0 N or more.
　本発明の上記観点によれば、幅１ｍｍ未満の接着フィルムと、リードフィルムとが接続テープによって接続される。そして、接着フィルムとリードフィルムとの接続強度は５．０Ｎ以上とされる。後述する実施例に示されるように、接続強度が５．０Ｎ以上となる場合、接着フィルムはリードフィルムから外れにくくなる。したがって、接着フィルムの幅が１ｍｍ未満であっても、接着フィルムをリードフィルムから外れにくくすることができる。 According to the above aspect of the present invention, the adhesive film having a width of less than 1 mm and the lead film are connected by the connecting tape. And the connection strength of an adhesive film and a lead film shall be 5.0 N or more. As shown in Examples described later, when the connection strength is 5.0 N or more, the adhesive film is difficult to come off from the lead film. Therefore, even if the width of the adhesive film is less than 1 mm, the adhesive film can be hardly detached from the lead film.
　上記課題を解決するために、本発明の他の観点によれば、支持フィルムと、支持フィルムの長さ方向の端部に隣接し、リールの巻芯の周面に連結されるリードフィルムと、支持フィルム及びリードフィルムの一方の面同士を接続する接続テープと、支持フィルムの他方の面上に形成される接着層と、接着層の硬化物を含み、支持フィルムの他方の面からリードフィルムの他方の面までに亘って形成される硬化層と、を含み、支持フィルムとリードフィルムとの接続強度が５．０Ｎ以上である、フィルム連結体が提供される。 In order to solve the above problems, according to another aspect of the present invention, a support film, a lead film adjacent to an end portion in the length direction of the support film, and connected to the peripheral surface of the reel core, A connection tape that connects one side of the support film and the lead film, an adhesive layer formed on the other side of the support film, and a cured product of the adhesive layer. And a hardened layer formed over the other surface, wherein a connection strength between the support film and the lead film is 5.0 N or more.
　ここで、フィルム連結体の幅は１ｍｍ未満であってもよい。 Here, the width of the film assembly may be less than 1 mm.
　また、接続テープの長さは１２０ｍｍ未満であってもよい。 Also, the length of the connecting tape may be less than 120 mm.
　また、硬化層は、光照射により接着層の硬化を開始可能な光硬化可能開始剤を含んでいてもよい。 Further, the cured layer may contain a photocurable initiator capable of initiating curing of the adhesive layer by light irradiation.
　また、接着層は、光硬化可能開始剤を含んでいてもよい。 Also, the adhesive layer may contain a photocurable initiator.
　また、接着層は、異方性導電材料を含んでいてもよい。 Further, the adhesive layer may include an anisotropic conductive material.
　本発明の他の観点によれば、巻芯と、巻芯に巻きつけられた上記のフィルム連結体と、を備え、リードフィルムは、巻芯に接続されている、フィルム巻装体が提供される。 According to another aspect of the present invention, there is provided a film winding body including a core and the above-described film coupling body wound around the core, wherein the lead film is connected to the core. The
　本発明の他の観点によれば、上記のフィルム巻装体と、巻芯の軸方向両端部に設けられたフランジ部と、を備える、リール体が提供される。 According to another aspect of the present invention, there is provided a reel body including the above-described film winding body and flange portions provided at both axial end portions of the core.
　本発明の他の観点によれば、支持フィルム及びリードフィルムの一方の面同士を接続テープにより接続する接続工程と、接着層を支持フィルムの他方の面からリードフィルムの他方の面に亘って形成する接着層形成工程と、支持フィルム及びリードフィルムの境界部分に存在する接着層である硬化対象接着層を硬化する硬化工程と、を含む、フィルム連結体の製造方法が提供される。 According to another aspect of the present invention, a connection step of connecting one surface of the support film and the lead film with a connection tape, and forming an adhesive layer from the other surface of the support film to the other surface of the lead film There is provided a method for producing a film assembly, comprising: an adhesive layer forming step for curing; and a curing step for curing an adhesive layer to be cured, which is an adhesive layer present at a boundary portion between the support film and the lead film.
　ここで、硬化工程は、硬化対象接着層に光を照射することで行われてもよい。 Here, the curing step may be performed by irradiating light on the adhesive layer to be cured.
　また、光照射により接着層の硬化を開始可能な光硬化可能開始剤を硬化対象接着層に含有させる硬化準備工程をさらに含んでいても良い。 In addition, a curing preparation step of adding a photocurable initiator capable of initiating curing of the adhesive layer by light irradiation to the adhesive layer to be cured may be further included.
　また、接着層は、異方性導電材料を含んでいてもよい。 Further, the adhesive layer may include an anisotropic conductive material.
　以上説明したように本発明のある観点によれば、接着フィルムの幅が１ｍｍ未満であっても、接着フィルムをリードから外れにくくすることができる。本発明の他の観点によれば、硬化層及び接続テープによって支持フィルムとリードフィルムとを接続することができるので、接着フィルムの幅が狭くなった場合であっても、接着フィルムをリードフィルムから外れにくくすることが可能となる。 As described above, according to a certain aspect of the present invention, even when the width of the adhesive film is less than 1 mm, the adhesive film can be made difficult to come off the lead. According to another aspect of the present invention, since the support film and the lead film can be connected by the cured layer and the connection tape, the adhesive film is removed from the lead film even when the width of the adhesive film is narrowed. It becomes possible to make it difficult to come off.
（ａ）本発明の第１の実施形態に係るリール体の外観を模式的に示す側面図である。（ｂ）本発明の第１の実施形態に係るリール体の外観を模式的に示す正面図である。(A) It is a side view which shows typically the external appearance of the reel body which concerns on the 1st Embodiment of this invention. (B) It is a front view which shows typically the external appearance of the reel body which concerns on the 1st Embodiment of this invention. 同実施形態に係るリール体の巻芯近傍の構成を模式的に示す側面図である。It is a side view which shows typically the structure of the core vicinity of the reel body which concerns on the same embodiment. 接続部分の構造を拡大して示す側面図である。It is a side view which expands and shows the structure of a connection part. 接続強度の測定方法を模式的に示す側面図である。It is a side view which shows typically the measuring method of connection strength. 接続部分の構造の変形例を模式的に示す側面図である。It is a side view which shows typically the modification of the structure of a connection part. 接続部分の構造の変形例を模式的に示す側面図である。It is a side view which shows typically the modification of the structure of a connection part. 参考例（接着フィルム幅１．５ｍｍ、接続テープ長さ３０ｍｍ）の接続強度と比較例１（接着フィルム幅０．８ｍｍ、接続テープ長さ３０ｍｍ）の接続強度とを対比して示すグラフである。It is a graph which compares and shows the connection strength of the reference example (adhesive film width 1.5mm, connecting tape length 30mm), and the comparative example 1 (adhesive film width 0.8mm, connecting tape length 30mm). 接続テープ長さと接続強度との対応関係を示すグラフである。It is a graph which shows the correspondence of connection tape length and connection intensity. テープ外れ発生率と接続強度との対応関係を示すグラフである。It is a graph which shows the correspondence of tape detachment incidence and connection strength. 接続テープ長さとテープ外れ発生率との対応関係を示すグラフである。It is a graph which shows the correspondence of a connection tape length and a tape removal occurrence rate. 接続テープ長さと接続強度との対応関係を示すグラフである。It is a graph which shows the correspondence of connection tape length and connection intensity. 接着面長さの比（接着フィルムと接続テープとの接着面長さと、リードと接続テープとの接着面長さとの比）と、接続強度との対応関係を示すグラフである。It is a graph which shows the correspondence of the ratio of adhesive surface length (ratio of the adhesive surface length of an adhesive film and a connection tape, and the adhesive surface length of a lead | read | reed and a connection tape), and connection strength. 本発明の第２の実施形態に係るフィルム連結体の概略構成を示す側断面図である。It is a sectional side view which shows schematic structure of the film coupling body which concerns on the 2nd Embodiment of this invention. 接続強度の測定方法を模式的に示す側面図である。It is a side view which shows typically the measuring method of connection strength. （ａ）本発明の第２の実施形態に係るリール体の外観を模式的に示す側面図である。（ｂ）本発明の第２の実施形態に係るリール体の外観を模式的に示す正面図である。(A) It is a side view which shows typically the external appearance of the reel body which concerns on the 2nd Embodiment of this invention. (B) It is a front view which shows typically the external appearance of the reel body which concerns on the 2nd Embodiment of this invention. フィルム連結体と巻芯との接続部分を示す側断面図である。It is a sectional side view which shows the connection part of a film coupling body and a core. フィルム連結体の製造方法を説明するための側断面図である。It is a sectional side view for demonstrating the manufacturing method of a film coupling body. フィルム連結体原反の概略構成を示す側断面図である。It is a sectional side view which shows schematic structure of a film coupling body original fabric.
　以下に添付図面を参照しながら、本発明の好適な実施の形態について詳細に説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.
　＜Ａ．第１の実施形態＞
　＜１ａ．リール体の構成＞
　まず、図１～図３に基づいて、リール体１０の構成について説明する。図１及び図２に示すように、リール体１０は、巻芯２０と、フランジ２１、２２と、接着フィルム３０と、リードフィルム４０と、連結用接続テープ５０と、固定用接続テープ６０とを備える。 <A. First Embodiment>
<1a. Reel configuration>
First, the configuration of the reel unit 10 will be described with reference to FIGS. As shown in FIGS. 1 and 2, the reel unit 10 includes a winding core 20, flanges 21 and 22, an adhesive film 30, a lead film 40, a connecting connection tape 50, and a fixing connection tape 60. Prepare.
　巻芯２０は、円筒形状となっており、リール体１０の回転軸となる。また、巻芯２０には接着フィルム３０が巻きつけられる。巻芯２０の外径（外径面の直径）は特に制限されず、リール体１０の用途等に応じて適宜決定されればよい。例えば、巻芯２０の直径（外径面の直径）は４５～９５ｍｍ程度であってもよい。フランジ２１、２２は、巻芯２０の軸方向の両端部にそれぞれ設けられる。フランジ２１、２２は円形の部材であり、互いに平行となるように巻芯２０に取り付けられる。フランジ２１、２２間に接着フィルム３０が収納される。 The winding core 20 has a cylindrical shape and serves as a rotation axis of the reel body 10. An adhesive film 30 is wound around the core 20. The outer diameter (the diameter of the outer diameter surface) of the winding core 20 is not particularly limited, and may be appropriately determined according to the use of the reel body 10 or the like. For example, the diameter of the core 20 (the diameter of the outer diameter surface) may be about 45 to 95 mm. The flanges 21 and 22 are provided at both ends of the core 20 in the axial direction. The flanges 21 and 22 are circular members, and are attached to the core 20 so as to be parallel to each other. An adhesive film 30 is accommodated between the flanges 21 and 22.
　接着フィルム３０は、幅が１．０ｍｍ未満の長尺なフィルムである。このように、接着フィルム３０の幅は非常に狭いので、リードフィルム４０との接続強度を高い値に維持することが非常に難しい。この点、本実施形態では、連結用接続テープ５０を用いて接着フィルム３０とリードフィルム４０との接続強度を高い値、具体的には５．０Ｎ以上に維持している。後述する実施例に示されるように、接着フィルム３０とリードフィルム４０との接続強度が５．０Ｎ以上となる場合に、接着フィルム３０がリール体１０から外れにくくなる。接着フィルム３０の長さは特に制限されず、接着フィルム３０の用途に応じて適宜決定されればよい。例えば、接着フィルム３０の長さは、５０ｍ以上であってもよく、２００ｍ以上であってもよく、３００ｍ以上であってもよい。また、巻きズレやはみ出し（接着フィルム３０の幅方向からの接着層３２のはみ出し）の抑制の観点から、上限は５００ｍ以下が好ましい。 The adhesive film 30 is a long film having a width of less than 1.0 mm. Thus, since the width of the adhesive film 30 is very narrow, it is very difficult to maintain the connection strength with the lead film 40 at a high value. In this regard, in the present embodiment, the connection strength between the adhesive film 30 and the lead film 40 is maintained at a high value, specifically, 5.0 N or more using the connection tape 50 for connection. As shown in the examples described later, when the connection strength between the adhesive film 30 and the lead film 40 is 5.0 N or more, the adhesive film 30 is unlikely to come off the reel body 10. The length of the adhesive film 30 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30. For example, the length of the adhesive film 30 may be 50 m or more, 200 m or more, or 300 m or more. Further, from the viewpoint of suppressing winding deviation and protrusion (excess of the adhesive layer 32 from the width direction of the adhesive film 30), the upper limit is preferably 500 m or less.
　接着フィルム３０は、支持フィルム３１と、支持フィルム３１上に形成された接着層３２とを備える。支持フィルム３１は、接着層３２の下地層となるフィルムである。支持フィルム３１の長さ方向の端部には、接着層３２に対して長さ方向に突出した突出部３１ａが形成される。そして、この突出部３１ａに連結用接続テープ５０が接着される。なお、突出部３１ａは、リードフィルム４０に接続される側の端部に形成されていればよい。また、突出部３１ａはなくてもよい。この場合、接着層３２に連結用接続テープ５０が接着されても良い。また、支持フィルム３１の裏面（接着層３２が形成されていない側の面）とリードフィルム４０とを連結用接続テープ５０で接続してもよい。 The adhesive film 30 includes a support film 31 and an adhesive layer 32 formed on the support film 31. The support film 31 is a film that becomes a base layer of the adhesive layer 32. A protruding portion 31 a protruding in the length direction with respect to the adhesive layer 32 is formed at the end portion in the length direction of the support film 31. And the connection tape 50 for a coupling | bonding is adhere | attached on this protrusion part 31a. In addition, the protrusion part 31a should just be formed in the edge part by the side connected to the lead film 40. FIG. Further, the protruding portion 31a may not be provided. In this case, the connecting tape for connection 50 may be bonded to the adhesive layer 32. Further, the back surface of the support film 31 (the surface on which the adhesive layer 32 is not formed) and the lead film 40 may be connected by a connecting tape for connection 50.
　支持フィルム３１の材質は特に制限されず、接着フィルム３０の用途に応じて適宜決定されればよい。支持フィルム３１を構成する材料としては、例えば、ＰＥＴ（Ｐｏｌｙ　Ｅｔｈｙｌｅｎｅ　Ｔｅｒｅｐｈｔｈａｌａｔｅ）、ＯＰＰ（Ｏｒｉｅｎｔｅｄ　Ｐｏｌｙｐｒｏｐｙｌｅｎｅ）、ＰＭＰ（Ｐｏｌｙ－４－ｍｅｔｈｙｌｐｅｎｔｅｎｅ－１）、ＰＴＦＥ（Ｐｏｌｙｔｅｔｒａｆｌｕｏｒｏｅｔｈｙｌｅｎｅ）等にシリコーン等の剥離剤を塗布したものが挙げられる。これらの支持フィルム３１は、接着フィルム３０の乾燥を防ぐとともに、接着フィルム３０の形状を維持することができる。支持フィルム３１の厚みは、特に制限されない。例えば、支持フィルム３１の厚みは、１２～１２５μｍ程度であってもよい。 The material of the support film 31 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30. As a material constituting the support film 31, for example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), PTFE (Polytetrafluoroethylene) or the like is applied to a PTFE (Polytetrafluoroethylene) or the like. Things. These support films 31 can prevent the adhesive film 30 from drying and can maintain the shape of the adhesive film 30. The thickness of the support film 31 is not particularly limited. For example, the thickness of the support film 31 may be about 12 to 125 μm.
　接着層３２は、接着性を有する層であり、支持フィルム３１上に形成される。接着層３２の材質も特に制限されず、接着フィルム３０の用途に応じて適宜決定されればよい。例えば、接着層３２は、異方性導電材料であってもよい。接着層３２の厚みも、特に制限はされない。例えば、接着層３２の厚みは、３～１６０μｍ程度であってもよい。また、接着層３２の表面はカバーフィルムで覆われていても良い。このカバーフィルムは、支持フィルム３１と略同様の材質で構成されていても良い。支持フィルム３１やカバーフィルムの色は、例えば白色（乳白色）ないしは無色透明であってもよい。 The adhesive layer 32 is an adhesive layer and is formed on the support film 31. The material of the adhesive layer 32 is not particularly limited, and may be appropriately determined according to the use of the adhesive film 30. For example, the adhesive layer 32 may be an anisotropic conductive material. The thickness of the adhesive layer 32 is not particularly limited. For example, the thickness of the adhesive layer 32 may be about 3 to 160 μm. The surface of the adhesive layer 32 may be covered with a cover film. This cover film may be made of substantially the same material as the support film 31. The colors of the support film 31 and the cover film may be white (milky white) or colorless and transparent, for example.
　リードフィルム４０は、接着フィルム３０を巻芯２０に固定するための部材である。リードフィルム４０の一方の端部に連結用接続テープ５０が接着される。すなわち、リードフィルム４０の一方の端部は連結用接続テープ５０を介して接着フィルム３０に接続される。リードフィルム４０の他方の端部は固定用接続テープ６０を介して巻芯２０に接続（固定）されている。リードフィルム４０の幅は特に制限されないが、接着フィルム３０の幅と同一であってもよい。後述する製造方法では、接着フィルム３０の原反及びリードフィルム４０の原反を連結用接続テープ５０で接続した後、これらの原反を一括して切断する。したがって、この製造方法によって作製されるリードフィルム４０は、接着フィルム３０と同一の幅を有する。 The lead film 40 is a member for fixing the adhesive film 30 to the core 20. A connecting tape for connection 50 is bonded to one end of the lead film 40. That is, one end of the lead film 40 is connected to the adhesive film 30 via the connection tape 50 for connection. The other end of the lead film 40 is connected (fixed) to the core 20 via a fixing connection tape 60. The width of the lead film 40 is not particularly limited, but may be the same as the width of the adhesive film 30. In the manufacturing method to be described later, after the original film of the adhesive film 30 and the original film of the lead film 40 are connected by the connecting tape 50 for connection, these original films are cut together. Therefore, the lead film 40 produced by this manufacturing method has the same width as the adhesive film 30.
　リードフィルム４０の材質も、特に制限されない。例えば、リードフィルム４０を構成する材料は支持フィルム３１を構成する材料と同じであってもよい。リードフィルム４０の厚みも特に制限されず、支持フィルム３１と同等程度であってもよい。リードフィルム４０の色は特に制限されないが、支持フィルム３１内に存在して視認しやすい色であることが好ましい。例えば支持フィルム３１が白色（乳白色）の場合、黒色であってもよい。 The material of the lead film 40 is not particularly limited. For example, the material constituting the lead film 40 may be the same as the material constituting the support film 31. The thickness of the lead film 40 is not particularly limited, and may be approximately the same as that of the support film 31. The color of the lead film 40 is not particularly limited, but is preferably a color that exists in the support film 31 and is easily visible. For example, when the support film 31 is white (milky white), it may be black.
　連結用接続テープ５０は、接着フィルム３０とリードフィルム４０とを接続するものである。具体的には、連結用接続テープ５０は、接着フィルム３０の突出部３１ａとリードフィルム４０とを接続する。この連結用接続テープ５０によって、接着フィルム３０とリードフィルム４０との接続強度が５．０Ｎ以上に維持される。 The connecting tape for connection 50 connects the adhesive film 30 and the lead film 40. Specifically, the connecting tape for connection 50 connects the protruding portion 31 a of the adhesive film 30 and the lead film 40. With this connecting tape 50 for connection, the connection strength between the adhesive film 30 and the lead film 40 is maintained at 5.0 N or more.
　上記接続強度は、連結用接続テープ５０の種類（より詳細には、連結用接続テープ５０の種類と支持フィルム３１及びリードフィルム４０の材質との組み合わせ）、接着面５１の長さＬ１と接着面５２の長さＬ２との合計長さＬ、接着面５１の長さＬ１と接着面５２の長さＬ２との比等によって決定される。ここで、接着面５１は、突出部３１ａと連結用接続テープ５０との接着面であり、接着面５２は、リードフィルム４０と連結用接続テープ５０との接着面である。本発明者は、これらのパラメータを調整することで、接続強度を５．０Ｎ以上にすることができることを見出した。 The connection strength includes the type of connection tape 50 for connection (more specifically, the combination of the type of connection tape 50 for connection and the material of the support film 31 and the lead film 40), the length L1 of the adhesive surface 51 and the adhesive surface. It is determined by the total length L of the length L2 of 52, the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52, and the like. Here, the adhesive surface 51 is an adhesive surface between the protruding portion 31 a and the connecting tape 50, and the adhesive surface 52 is an adhesive surface between the lead film 40 and the connecting tape 50. The inventor has found that the connection strength can be increased to 5.0 N or more by adjusting these parameters.
　ここで、連結用接続テープ５０の種類は、接着フィルム３０とリードフィルム４０との接続強度を５．０Ｎ以上とすることができるものであれば特に制限されない。連結用接続テープ５０の種類としては、例えばシリコンテープ等が挙げられる。 Here, the type of the connecting tape for connection 50 is not particularly limited as long as the connection strength between the adhesive film 30 and the lead film 40 can be 5.0 N or more. As a kind of connection tape 50 for a connection, a silicon tape etc. are mentioned, for example.
　接着面５１の長さＬ１と接着面５２の長さＬ２との合計長さＬは、接着フィルム３０とリードフィルム４０との接続強度を５．０Ｎ以上とすることができる長さであれば特に制限されない。合計長さＬは、例えば後述する実施例の条件下では１２０ｍｍ以上となる。 The total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 is particularly a length that allows the connection strength between the adhesive film 30 and the lead film 40 to be 5.0 N or more. Not limited. The total length L is, for example, 120 mm or more under the conditions of the examples described later.
　また、合計長さＬは、巻芯２０の外周面の円周長さの３０％より大きいことが好ましく、４０％以上であることがさらに好ましく、巻芯２０の１周長さ以上であることがさらに好ましい。合計長さＬがこれらの範囲内の値となる場合に、接続強度が特に大きくなるからである。合計長さＬの上限値は特に制限されないが、６００ｍｍ程度であっても良い。合計長さＬが長すぎると、接着フィルム３０とリードフィルム４０との接続時等に連結用接続テープ５０にシワが入りやすくなる。このようなシワは、超音波接続時の凹凸と同様の問題を生じさせる可能性がある。 The total length L is preferably greater than 30% of the circumferential length of the outer peripheral surface of the core 20, more preferably 40% or more, and one or more circumferences of the core 20. Is more preferable. This is because the connection strength is particularly increased when the total length L is a value within these ranges. The upper limit value of the total length L is not particularly limited, but may be about 600 mm. If the total length L is too long, wrinkles are likely to enter the connecting tape for connection 50 when the adhesive film 30 and the lead film 40 are connected. Such wrinkles may cause problems similar to the unevenness at the time of ultrasonic connection.
　接着面５１の長さＬ１と接着面５２の長さＬ２との比Ｌ１：Ｌ２は、接着フィルム３０とリードフィルム４０との接続強度を５．０Ｎ以上とすることができる範囲内であれば特に制限されない。Ｌ１：Ｌ２は、例えば３：７～７：３であってもよい。 The ratio L1: L2 between the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 is particularly within the range in which the connection strength between the adhesive film 30 and the lead film 40 can be 5.0 N or more. Not limited. L1: L2 may be, for example, 3: 7 to 7: 3.
　なお、図２、図３では、接着フィルム３０の端部とリードフィルム４０の端部とが隣接しているが、これらの間には隙間が形成されていてもよい。ただし、両者は重なっていないことが好ましい。両者が重なっている場合、重なり部分が段差となる。この段差は、超音波接続時の凹凸と同様の問題を生じさせる可能性がある。 2 and 3, the end of the adhesive film 30 and the end of the lead film 40 are adjacent to each other, but a gap may be formed between them. However, it is preferable that both do not overlap. When both are overlapped, the overlapping portion becomes a step. This level difference may cause the same problem as the unevenness at the time of ultrasonic connection.
　連結用接続テープ５０の幅は特に制限されないが、接着フィルム３０の幅と同一であってもよい。後述する製造方法では、接着フィルム３０の原反及びリードフィルム４０の原反を連結用接続テープ５０で接続した後、これらの原反を一括して切断する。したがって、この製造方法によって作製される連結用接続テープ５０は、接着フィルム３０と同一の幅を有する。 The width of the connecting tape for connection 50 is not particularly limited, but may be the same as the width of the adhesive film 30. In the manufacturing method to be described later, after the original film of the adhesive film 30 and the original film of the lead film 40 are connected by the connecting tape 50 for connection, these original films are cut together. Therefore, the connecting tape 50 for connection produced by this manufacturing method has the same width as the adhesive film 30.
　固定用接続テープ６０は、リードフィルム４０と巻芯２０とを接続するものである。固定用接続テープ６０の種類は特に制限されないが、リードフィルム４０と巻芯２０との接続強度を確保するという観点からは、固定用接続テープ６０は連結用接続テープ５０と同じ種類であることが好ましい。連結用接続テープ５０および固定用接続テープ６０の厚みは、特に制限はされず、巻取りや取り扱い性の観点から、適宜設定される。 The fixing connection tape 60 connects the lead film 40 and the core 20. The type of the connecting tape for fixing 60 is not particularly limited, but the connecting tape for fixing 60 may be the same type as the connecting tape for connecting 50 from the viewpoint of securing the connection strength between the lead film 40 and the core 20. preferable. The thicknesses of the connecting tape for connection 50 and the connecting tape for fixing 60 are not particularly limited, and are appropriately set from the viewpoint of winding and handling.
　なお、図２に示す例では、連結用接続テープ５０は支持フィルム３１及びリードフィルム４０の片面にのみ設けられていたが、図５に示すように、支持フィルム３１及びリードフィルム４０の両面に設けられていても良い。また、図６に示すように、支持フィルム３１の裏面（接着層３１が形成されていない側の面）に連結用接続テープ５０を設けてもよい。 In the example shown in FIG. 2, the connecting tape 50 for connection is provided only on one side of the support film 31 and the lead film 40, but is provided on both sides of the support film 31 and the lead film 40 as shown in FIG. 5. It may be done. Further, as shown in FIG. 6, a connecting tape 50 may be provided on the back surface of the support film 31 (the surface on which the adhesive layer 31 is not formed).
　＜２ａ．接続強度の測定方法＞
　つぎに、図４に基づいて、接続強度の測定方法について説明する。まず、フィルム連結体１０ａを用意する。フィルム連結体１０ａは、接着フィルム３０とリードフィルム４０とを連結用接続テープ５０で接続することで作製される。フィルム連結体１０ａの詳細な製造方法については後述する。 <2a. Connection strength measurement method>
Next, a connection strength measurement method will be described with reference to FIG. First, the film coupling body 10a is prepared. The film connector 10 a is produced by connecting the adhesive film 30 and the lead film 40 with a connecting tape 50 for connection. The detailed manufacturing method of the film coupling body 10a will be described later.
　ついで、試験台１００に固定されたクランプ１１０にリードフィルム４０を固定する。ついで、引張試験機１２０に接着フィルム３０を固定する。ここで、接着フィルム３０は長いので、リードフィルム４０との接続部分の近傍で接着フィルム３０を切断した上で、接着フィルム３０を引張試験機１２０に固定する。ついで、引張試験機１２０を鉛直上方に引き上げる。引張試験機１２０を引き上げていくと、引張試験機１２０に掛かる荷重が大きくなっていき、最終的には接着フィルム３０がリードフィルム４０から分離する。この時に引張試験機１２０に掛かる荷重を測定し、測定値を接続強度とする。 Next, the lead film 40 is fixed to the clamp 110 fixed to the test table 100. Next, the adhesive film 30 is fixed to the tensile tester 120. Here, since the adhesive film 30 is long, the adhesive film 30 is cut in the vicinity of the connection portion with the lead film 40 and then the adhesive film 30 is fixed to the tensile tester 120. Next, the tensile tester 120 is pulled up vertically. As the tensile tester 120 is pulled up, the load applied to the tensile tester 120 increases, and the adhesive film 30 is finally separated from the lead film 40. At this time, the load applied to the tensile tester 120 is measured, and the measured value is defined as the connection strength.
　＜３ａ．リール体の製造方法＞
　つぎに、リール体１０の製造方法を説明する。ます、支持フィルム３１の原反（支持フィルム原反）を用意する。支持フィルム原反は、支持フィルム３１よりも幅広かつ支持フィルム３１と同一長さを有するフィルムである。ついで、支持フィルム原反の表面に接着層３２を形成する。これにより接着フィルム原反を作製する。ついで、接着フィルム原反の長さ方向の一端部に突出部３１ａを形成する。突出部３１ａは、接着フィルム原反の長さ方向の一端部から接着層３２を引き剥がすことで形成される。なお、突出部３１ａ以外の箇所に接着層３２を形成することで、突出部３１ａを形成してもよい。突出部３１ａは、連結用接続テープ５０を接着する前に洗浄してもよい。 <3a. Reel body manufacturing method>
Next, a method for manufacturing the reel unit 10 will be described. First, an original fabric of the support film 31 (support film original fabric) is prepared. The original support film is a film that is wider than the support film 31 and has the same length as the support film 31. Next, the adhesive layer 32 is formed on the surface of the support film original fabric. Thereby, an adhesive film original fabric is produced. Next, a protrusion 31a is formed at one end of the adhesive film original in the length direction. The protrusion 31a is formed by peeling off the adhesive layer 32 from one end of the adhesive film original in the length direction. In addition, you may form the protrusion part 31a by forming the contact bonding layer 32 in places other than the protrusion part 31a. The protruding portion 31a may be washed before bonding the connecting tape for connection 50.
　ついで、リードフィルム４０の原反（リードフィルム原反）を用意する。リードフィルム原反は、リードフィルム４０よりも幅広かつリードフィルム４０と同一長さを有するフィルムである。そして、連結用接続テープ５０を用いて接着フィルム原反とリードフィルム原反とを接続することで、連結体原反を作製する。そして、連結体原反を１ｍｍ未満の幅で切断する。これにより、上述したフィルム連結体１０ａを作製する。ついで、空リール（巻芯２０及びフランジ２１、２２からなるもの）を別途用意し、固定用接続テープ６０を用いて空リールの巻芯２０とフィルム連結体１０ａのリードフィルム４０とを接続する。そして、接着フィルム３０を巻芯２０に巻きつける。以上の工程により、リール体１０を作製する。本製造方法によれば、幅広の連結体原反を作製してから、これを１ｍｍ未満の幅で切断することでフィルム連結体１０ａを作製する。したがって、接着フィルム３０の狭小化に対応することができる。なお、上記の製造方法はあくまで一例である。リール体１０は、どのような製造方法で作製されてもよい。 Next, prepare a raw material for the lead film 40 (lead film raw material). The lead film original is a film that is wider than the lead film 40 and has the same length as the lead film 40. And a connecting body original fabric is produced by connecting an adhesive film original fabric and a lead film original fabric using connecting tape 50 for connection. And the coupling body original fabric is cut | disconnected by the width below 1 mm. Thereby, the film coupling body 10a mentioned above is produced. Next, an empty reel (consisting of the core 20 and the flanges 21 and 22) is prepared separately, and the core 20 of the empty reel and the lead film 40 of the film connector 10a are connected using the fixing connection tape 60. Then, the adhesive film 30 is wound around the core 20. The reel body 10 is manufactured through the above steps. According to this manufacturing method, after producing the wide coupling body original fabric, the film coupling body 10a is produced by cutting this with a width of less than 1 mm. Therefore, it is possible to cope with the narrowing of the adhesive film 30. Note that the above manufacturing method is merely an example. The reel unit 10 may be manufactured by any manufacturing method.
　以上により、第１の実施形態によれば、幅１ｍｍ未満の接着フィルム３０と、リードフィルム４０とが連結用接続テープ５０によって接続される。そして、接着フィルム３０とリードフィルム４０との接続強度は５．０Ｎ以上とされる。したがって、接着フィルム３０の幅が１ｍｍ未満であっても、接着フィルム３０をリードフィルム４０から外れにくくすることができる。また、接着フィルム３０とリードフィルム４０とを連結用接続テープ５０で接続するだけでよいので、既存の設備をほぼ流用して本実施形態を実現することができる。 As described above, according to the first embodiment, the adhesive film 30 having a width of less than 1 mm and the lead film 40 are connected by the connecting tape 50 for connection. The connection strength between the adhesive film 30 and the lead film 40 is 5.0 N or more. Therefore, even if the width of the adhesive film 30 is less than 1 mm, the adhesive film 30 can be hardly detached from the lead film 40. Moreover, since it is only necessary to connect the adhesive film 30 and the lead film 40 with the connection tape 50 for connection, this embodiment can be implement | achieved substantially diverting existing equipment.
　また、連結用接続テープ５０は、接着フィルム３０に形成された突出部３１ａとリードフィルム４０とを接続してもよく、この場合、接着フィルム３０とリードフィルム４０とをより強固に接続することができる。 Moreover, the connection tape 50 for connection may connect the protrusion part 31a formed in the adhesive film 30 and the lead film 40, and in this case, the adhesive film 30 and the lead film 40 can be connected more firmly. it can.
　さらに、接着面５１の長さＬ１と接着面５２の長さＬ２との合計長さＬは、巻芯２０の外周面の円周長さの３０％より大きくてもよく、この場合、接着フィルム３０とリードフィルム４０とをより強固に接続することができる。 Furthermore, the total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 may be larger than 30% of the circumferential length of the outer peripheral surface of the core 20, and in this case, the adhesive film 30 and the lead film 40 can be connected more firmly.
　さらに、上記合計長さＬは１２０ｍｍ以上であってもよく、この場合、接着フィルム３０とリードフィルム４０とをより強固に接続することができる。 Furthermore, the total length L may be 120 mm or more. In this case, the adhesive film 30 and the lead film 40 can be more firmly connected.
　さらに、接着面５１の長さＬ１と接着面５２の長さＬ２との比、すなわち接着面長さの比は３：７～７：３であってもよい。上記実施例によれば、この範囲内で接続強度を５．０Ｎ以上とすることができる。したがって、本実施形態によれば、この範囲内で接着面長さの比を調整することができる。 Furthermore, the ratio between the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52, that is, the ratio of the adhesive surface length may be 3: 7 to 7: 3. According to the said Example, connection strength can be 5.0 N or more within this range. Therefore, according to the present embodiment, the ratio of the adhesion surface length can be adjusted within this range.
　また、連結用接続テープ５０は、接着フィルム３０及びリードフィルム４０の表裏表面に設けられてもよく、この場合、接着フィルム３０とリードフィルム４０とをより強固に接続することができる。 Further, the connecting tape for connection 50 may be provided on the front and back surfaces of the adhesive film 30 and the lead film 40. In this case, the adhesive film 30 and the lead film 40 can be more firmly connected.
　さらに、接着フィルム３０の長さは５０ｍ以上であってもよい。このように接着フィルム３０が長尺となる場合、接着フィルム３０はリードフィルム４０から外れやすい。そして、接着フィルム３０がリードフィルム４０から外れた場合、リール体１０に残っている接着フィルム３０は全て無駄になってしまう。本実施形態では、長尺な接着フィルム３０がリール体１０に巻きつけられた場合であっても、接着フィルム３０をリードフィルム４０から外れにくくすることができる。 Furthermore, the length of the adhesive film 30 may be 50 m or more. Thus, when the adhesive film 30 becomes long, the adhesive film 30 is easily detached from the lead film 40. When the adhesive film 30 is detached from the lead film 40, all of the adhesive film 30 remaining on the reel body 10 is wasted. In the present embodiment, even when the long adhesive film 30 is wound around the reel body 10, the adhesive film 30 can be made difficult to come off from the lead film 40.
　また、接着フィルム３０の接着層３２は異方性導電層であってもよい。この場合、異方性導電層を含む接着フィルム３０をリール体１０から外れにくくすることができる。 Further, the adhesive layer 32 of the adhesive film 30 may be an anisotropic conductive layer. In this case, the adhesive film 30 including the anisotropic conductive layer can be hardly detached from the reel body 10.
　＜Ｂ．第２の実施形態＞
　＜１ｂ．フィルム連結体の構成＞
　まず、図１３に基づいて、フィルム連結体２０１の構成について説明する。フィルム連結体２０１は、接着フィルム２１０と、リードフィルム２２０と、連結用接続テープ２３０と、硬化層２４０とを備える。 <B. Second Embodiment>
<1b. Structure of film assembly>
First, the structure of the film coupling body 201 is demonstrated based on FIG. The film connector 201 includes an adhesive film 210, a lead film 220, a connection tape for connection 230, and a cured layer 240.
　接着フィルム２１０は、支持フィルム２１１と、支持フィルム２１１の他方の面２１１ｂ上に形成された接着層２１２とを備える。支持フィルム２１１は、接着層２１２の下地層となるフィルムである。支持フィルム２１１の材質は特に制限されず、接着フィルム２１０の用途に応じて適宜決定されればよい。支持フィルム２１１を構成する材料としては、例えば、ＰＥＴ（Ｐｏｌｙ　Ｅｔｈｙｌｅｎｅ　Ｔｅｒｅｐｈｔｈａｌａｔｅ）、ＯＰＰ（Ｏｒｉｅｎｔｅｄ　Ｐｏｌｙｐｒｏｐｙｌｅｎｅ）、ＰＭＰ（Ｐｏｌｙ－４－ｍｅｔｈｙｌｐｅｎｔｅｎｅ－１）、ＰＴＦＥ（Ｐｏｌｙｔｅｔｒａｆｌｕｏｒｏｅｔｈｙｌｅｎｅ）等にシリコーン等の剥離剤を塗布したものが挙げられる。これらの支持フィルム２１１は、接着フィルム２１０の乾燥を防ぐとともに、接着フィルム２１０の形状を維持することができる。支持フィルム２１１の厚みは、特に制限されない。例えば、支持フィルム２１１の厚みは、１２～１２５μｍ程度であってもよい。また、接着層２１２の表面はカバーフィルムで覆われていても良い。このカバーフィルムは、支持フィルム２１１と略同様の材質で構成されていても良い。支持フィルム２１１やカバーフィルムの色は、例えば白色（乳白色）ないしは無色透明であってもよい。 The adhesive film 210 includes a support film 211 and an adhesive layer 212 formed on the other surface 211b of the support film 211. The support film 211 is a film that becomes a base layer of the adhesive layer 212. The material of the support film 211 is not particularly limited, and may be determined as appropriate according to the application of the adhesive film 210. As a material constituting the support film 211, for example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), PTFE (Polytetrafluoroethylene) or the like is applied to a PTFE (Polytetrafluoroethylene) or the like. Things. These support films 211 can keep the shape of the adhesive film 210 while preventing the adhesive film 210 from drying. The thickness of the support film 211 is not particularly limited. For example, the thickness of the support film 211 may be about 12 to 125 μm. The surface of the adhesive layer 212 may be covered with a cover film. This cover film may be made of substantially the same material as the support film 211. The color of the support film 211 or the cover film may be white (milky white) or colorless and transparent, for example.
　接着層２１２は、接着性を有する層であり、支持フィルム２１１の他方の面２１１ｂ上に形成される。接着層２１２の材質も特に制限されず、接着フィルム２１０の用途に応じて適宜決定されればよい。例えば、接着層２１２は、異方性導電材料で構成されていてもよい。ここで、異方性導電材料は、少なくとも、重合性化合物、熱硬化開始剤、及び導電粒子を含む。 The adhesive layer 212 is an adhesive layer and is formed on the other surface 211b of the support film 211. The material of the adhesive layer 212 is not particularly limited, and may be appropriately determined according to the application of the adhesive film 210. For example, the adhesive layer 212 may be made of an anisotropic conductive material. Here, the anisotropic conductive material includes at least a polymerizable compound, a thermosetting initiator, and conductive particles.
　重合性化合物は、互いに重合して硬化する樹脂である。重合性化合物は、異方性導電材料を構成するものであれば特に制限されない。重合性化合物としては、例えばエポキシ重合性化合物、及びアクリル重合性化合物等が挙げられる。エポキシ重合性化合物は、分子内に１つまたは２つ以上のエポキシ基を有するモノマー、オリゴマー、またはプレポリマーである。エポキシ重合性化合物としては、例えば、各種ビスフェノール型エポキシ樹脂（ビスフェノールＡ型、Ｆ型等）、ノボラック型エポキシ樹脂、ゴムおよびウレタン等の各種変性エポキシ樹脂、ナフタレン型エポキシ樹脂、ビフェニル型エポキシ樹脂、フェノールノボラック型エポキシ樹脂、スチルベン型エポキシ樹脂、トリフェノールメタン型エポキシ樹脂、ジシクロペンタジエン型エポキシ樹脂、トリフェニルメタン型エポキシ樹脂、及びこれらのプレポリマー等が挙げられる。 Polymerizable compounds are resins that polymerize and cure each other. The polymerizable compound is not particularly limited as long as it constitutes an anisotropic conductive material. Examples of the polymerizable compound include an epoxy polymerizable compound and an acrylic polymerizable compound. The epoxy polymerizable compound is a monomer, oligomer, or prepolymer having one or more epoxy groups in the molecule. Examples of the epoxy polymerizable compound include various bisphenol type epoxy resins (bisphenol A type, F type, etc.), novolac type epoxy resins, various modified epoxy resins such as rubber and urethane, naphthalene type epoxy resins, biphenyl type epoxy resins, phenols. Examples include novolac type epoxy resins, stilbene type epoxy resins, triphenolmethane type epoxy resins, dicyclopentadiene type epoxy resins, triphenylmethane type epoxy resins, and prepolymers thereof.
　アクリル重合性化合物は、分子内に１つまたは２つ以上のアクリル基を有するモノマー、オリゴマー、またはプレポリマーである。アクリル重合性化合物としては、例えば、メチルアクリレート、エチルアクリレート、イソプロピルアクリレート、イソブチルアクリレート、エポキシアクリレート、エチレングリコールジアクリレート、ジエチレングリコールジアクリレート、トリメチロールプロパントリアクリレート、ジメチロールトリシクロデカンジアクリレート、テトラメチレングリコールテトラアクリレート、２－ヒドロキシ－１，３－ジアクリロキシプロパン、２，２－ビス［４－（アクリロキシメトキシ）フェニル］プロパン、２，２－ビス［４－（アクリロキシエトキシ）フェニル］プロパン、ジシクロペンテニルアクリレート、トリシクロデカニルアクリレート、トリス（アクリロキシエチル）イソシアネレート、およびウレタンアクリレート等が挙げられる。 The acrylic polymerizable compound is a monomer, oligomer, or prepolymer having one or more acrylic groups in the molecule. Examples of acrylic polymerizable compounds include methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylol propane triacrylate, dimethylol tricyclodecane diacrylate, and tetramethylene glycol. Tetraacrylate, 2-hydroxy-1,3-diacryloxypropane, 2,2-bis [4- (acryloxymethoxy) phenyl] propane, 2,2-bis [4- (acryloxyethoxy) phenyl] propane, Examples include dicyclopentenyl acrylate, tricyclodecanyl acrylate, tris (acryloxyethyl) isocyanate, and urethane acrylate. That.
　本実施形態では、上記で列挙した重合性化合物のうちいずれか１種を用いてもよく、２種以上を任意に組み合わせて用いてもよい。 In this embodiment, any one of the polymerizable compounds listed above may be used, or two or more may be used in any combination.
　熱硬化開始剤は、熱を吸収して活性化し、上記重合性化合物の重合を開始させる材料である。熱硬化開始剤としては、例えば、エポキシ重合性化合物を硬化させる熱アニオンまたは熱カチオン系硬化開始剤、アクリル重合性化合物を硬化させる熱ラジカル系硬化開始剤等が挙げられる。本実施形態では、重合性化合物によって適切な熱硬化開始剤を選択すればよいが、後述するように、硬化層２４０は、接着層２１２の硬化物で構成される。そして、硬化層２４０は、接着層２１２に光を照射することで形成される。したがって、熱硬化開始剤は、光照射によっても活性化する開始剤であることが好ましい。すなわち、熱硬化開始剤は、光硬化開始剤を兼用する開始剤であることが好ましい。このような熱硬化開始剤としては、例えば、熱カチオン系または熱ラジカル系硬化開始剤が挙げられる。 The thermosetting initiator is a material that activates by absorbing heat and initiates polymerization of the polymerizable compound. Examples of the thermal curing initiator include a thermal anion or thermal cationic curing initiator that cures an epoxy polymerizable compound, and a thermal radical curing initiator that cures an acrylic polymerizable compound. In the present embodiment, an appropriate thermosetting initiator may be selected depending on the polymerizable compound, but the cured layer 240 is formed of a cured product of the adhesive layer 212 as described later. The hardened layer 240 is formed by irradiating the adhesive layer 212 with light. Therefore, the thermosetting initiator is preferably an initiator that is activated even by light irradiation. That is, the thermosetting initiator is preferably an initiator that also serves as a photocuring initiator. As such a thermosetting initiator, for example, a thermal cationic or thermal radical curing initiator can be mentioned.
　なお、接着層２１２に含まれる熱硬化開始剤が光硬化開始剤を兼用できない開始剤、すなわち熱アニオン系硬化開始剤となる場合、接着層２１２には、熱硬化開始剤とは別に光硬化開始剤を含めることが好ましい。光照射により接着層２１２を硬化させるためである。光硬化開始剤の種類も特に制限されないが、光カチオン系硬化開始剤は熱アニオン系硬化開始剤と相性が悪い可能性がある。このため、光硬化開始剤としては、光ラジカル系硬化開始剤を用いることが好ましい。そして、熱アニオン系硬化開始剤は、エポキシ系重合性化合物を重合させる。その一方で、光ラジカル系硬化開始剤は、アクリル系重合性化合物を重合させる。したがって、この場合、接着層２１２に含まれる重合性化合物は、エポキシ系重合性化合物及びアクリル系重合性化合物（いわゆる、エポキシアクリル相溶系）となる。なお、接着層２１２に含まれる熱硬化開始剤がアニオン系硬化開始剤となる場合、接着層２１２には、上述した光硬化開始剤の代わりに光硬化開始剤を兼用する熱硬化開始剤を含めてもよい。以下、光硬化開始剤を兼用する熱硬化開始剤及び光硬化開始剤を「光硬化可能開始剤」とも称する。したがって、接着層２１２は、光硬化可能開始剤が含まれていることが好ましい。また、光硬化可能開始剤は、必ずしも接着層２１２の全体に含まれている必要はなく、硬化対象となる接着層２１２、すなわち硬化対象接着層内に含まれていればよい。硬化対象接着層内に光硬化可能開始剤を含ませる方法については後述する。 In addition, when the thermosetting initiator contained in the adhesive layer 212 is an initiator that cannot be used as a photocuring initiator, that is, a thermal anionic curing initiator, the adhesive layer 212 has a photocuring start separately from the thermosetting initiator. It is preferable to include an agent. This is because the adhesive layer 212 is cured by light irradiation. The kind of the photocuring initiator is not particularly limited, but the photocationic curing initiator may be incompatible with the thermal anionic curing initiator. For this reason, it is preferable to use a photoradical curing initiator as the photocuring initiator. The thermal anionic curing initiator polymerizes the epoxy polymerizable compound. On the other hand, the radical photocuring initiator polymerizes an acrylic polymerizable compound. Therefore, in this case, the polymerizable compound contained in the adhesive layer 212 is an epoxy polymerizable compound and an acrylic polymerizable compound (so-called epoxy acrylic compatible system). In addition, when the thermosetting initiator contained in the adhesive layer 212 is an anionic curing initiator, the adhesive layer 212 includes a thermosetting initiator that also serves as a photocuring initiator instead of the above-described photocuring initiator. May be. Hereinafter, the thermosetting initiator and the photocuring initiator that are also used as the photocuring initiator are also referred to as “photocurable initiators”. Therefore, the adhesive layer 212 preferably includes a photocurable initiator. Moreover, the photocurable initiator does not necessarily need to be included in the entire adhesive layer 212, and may be included in the adhesive layer 212 to be cured, that is, in the adhesive layer to be cured. A method of including a photocurable initiator in the adhesive layer to be cured will be described later.
　導電粒子は、複数の端子間を異方性導電接続するための粒子である。導電粒子の種類は特に制限されない。導電粒子としては、例えば、金属粒子、および金属被覆樹脂粒子等が挙げられる。金属粒子としては、例えば、ニッケル、コバルト、銅、銀、金、またはパラジウムなどの金属粒子等が挙げられる。金属被覆樹脂粒子としては、例えば、スチレン－ジビニルベンゼン共重合体、ベンゾグアナミン樹脂、架橋ポリスチレン樹脂、アクリル樹脂、またはスチレン－シリカ複合樹脂などのコア樹脂粒子の表面を、ニッケル、銅、金、またはパラジウムなどの金属で被覆した粒子等が挙げられる。導電粒子の表面には、金もしくはパラジウム薄膜、または圧着時には破壊される程度に薄い絶縁樹脂薄膜などが形成されてもよい。尚、異方性導電材料は、導電粒子を２種以上含んでいてもよい。 Conductive particles are particles for anisotropic conductive connection between a plurality of terminals. The kind of conductive particles is not particularly limited. Examples of the conductive particles include metal particles and metal-coated resin particles. Examples of the metal particles include metal particles such as nickel, cobalt, copper, silver, gold, or palladium. Examples of the metal-coated resin particles include nickel, copper, gold, or palladium on the surface of core resin particles such as styrene-divinylbenzene copolymer, benzoguanamine resin, cross-linked polystyrene resin, acrylic resin, or styrene-silica composite resin. And particles coated with a metal such as On the surface of the conductive particles, a gold or palladium thin film, or an insulating resin thin film that is thin enough to be destroyed during pressure bonding may be formed. The anisotropic conductive material may contain two or more kinds of conductive particles.
　また、異方性導電材料には、上記の成分の他、膜形成樹脂、各種添加剤等を含めてもよい。膜形成樹脂は、異方性導電材料をフィルム形状としたい場合に異方性導電材料に添加される。膜形成樹脂の種類は、後述する特性を満たすものであれば特に制限されない。膜形成樹脂としては、例えば、エポキシ樹脂、フェノキシ樹脂、ポリエステルウレタン樹脂、ポリエステル樹脂、ポリウレタン樹脂、アクリル樹脂、ポリイミド樹脂、ブチラール樹脂などの種々の樹脂を用いることができる。また、本実施形態では、これらの膜形成樹脂のうちいずれか１種だけを使用することもできるし、２種以上を任意に組み合わせて使用することもできる。なお、膜形成樹脂は、膜形成性および接着信頼性を良好にするという観点からは、フェノキシ樹脂であることが好ましい。 Further, the anisotropic conductive material may contain a film-forming resin, various additives, etc. in addition to the above components. The film-forming resin is added to the anisotropic conductive material when the anisotropic conductive material is desired to have a film shape. The type of film forming resin is not particularly limited as long as it satisfies the characteristics described later. As the film forming resin, for example, various resins such as an epoxy resin, a phenoxy resin, a polyester urethane resin, a polyester resin, a polyurethane resin, an acrylic resin, a polyimide resin, and a butyral resin can be used. In the present embodiment, only one of these film-forming resins can be used, or two or more can be used in any combination. In addition, it is preferable that film forming resin is a phenoxy resin from a viewpoint of making film forming property and adhesive reliability favorable.
　異方性導電材料に添加可能な添加剤としては、シランカップリング剤、無機フィラー、着色剤、酸化防止剤、および防錆剤等が挙げられる。シランカップリング剤の種類は特に制限されない。シランカップリング剤としては、例えば、エポキシ系、アミノ系、メルカプト・スルフィド系、ウレイド系のシランカップリング剤等が挙げられる。異方性導電材料にこれらのシランカップリング剤が添加された場合、ガラス基板等の無機基板への接着性を向上させることができる。 Examples of additives that can be added to the anisotropic conductive material include silane coupling agents, inorganic fillers, colorants, antioxidants, and rust inhibitors. The kind of silane coupling agent is not particularly limited. Examples of the silane coupling agent include epoxy-based, amino-based, mercapto-sulfide-based, and ureido-based silane coupling agents. When these silane coupling agents are added to the anisotropic conductive material, adhesion to an inorganic substrate such as a glass substrate can be improved.
　また、無機フィラーは、異方性導電材料の流動性及び膜強度、特に最低溶融粘度を調整するための添加剤である。無機フィラーの種類も特に制限されない。無機フィラーとしては、例えば、シリカ、タルク、酸化チタン、炭酸カルシウム、酸化マグネシウム等が挙げられる。 The inorganic filler is an additive for adjusting the fluidity and film strength of the anisotropic conductive material, particularly the minimum melt viscosity. The kind of inorganic filler is not particularly limited. Examples of the inorganic filler include silica, talc, titanium oxide, calcium carbonate, and magnesium oxide.
　リードフィルム２２０は、接着フィルム２１０を後述するリール体４００に固定するための部材である。また、リードフィルム２２０は、接着フィルム２１０が終了することを示すエンドフィルムとしての機能も有する。リードフィルム２２０の材質は、特に制限されない。例えば、リードフィルム２２０を構成する材料は支持フィルム２１１を構成する材料と同じであってもよい。リードフィルム２２０の厚みも特に制限されず、支持フィルム２１１と同等程度であってもよい。ただし、リードフィルム２２０は支持フィルム２１１とは異なる色に着色されていることが好ましい。これにより、接着フィルム２１０の使用者は、リードフィルム２２０を容易に視認することができる。リードフィルム２２０の色は特に制限されないが、支持フィルム２１１内に存在して視認しやすい色であることが好ましい。例えば支持フィルム２１１が白色（乳白色）の場合、黒色であってもよい。 The lead film 220 is a member for fixing the adhesive film 210 to a reel body 400 described later. The lead film 220 also has a function as an end film indicating that the adhesive film 210 is finished. The material of the lead film 220 is not particularly limited. For example, the material constituting the lead film 220 may be the same as the material constituting the support film 211. The thickness of the lead film 220 is not particularly limited, and may be approximately the same as the support film 211. However, the lead film 220 is preferably colored in a color different from that of the support film 211. Thereby, the user of the adhesive film 210 can easily visually recognize the lead film 220. The color of the lead film 220 is not particularly limited, but is preferably a color that exists in the support film 211 and is easily visible. For example, when the support film 211 is white (milky white), it may be black.
　連結用接続テープ２３０は、支持フィルム２１１及びリードフィルム２２０の一方の面２１１ａ、２２０ａ同士を接続するものである。この連結用接続テープ２３０及び後述する硬化層２４０によって、接着フィルム２１０とリードフィルム２２０とを接続する。 The connecting tape 230 for connection connects the support film 211 and one surface 211a of the lead film 220 to each other. The adhesive film 210 and the lead film 220 are connected by the connecting tape for connection 230 and a cured layer 240 described later.
　ここで、連結用接続テープ２３０の種類は、接着フィルム２１０とリードフィルム２２０とを接続可能なものであれば特に制限されない。連結用接続テープ２３０の種類としては、例えばシリコンテープ等が挙げられる。 Here, the type of the connecting tape for connection 230 is not particularly limited as long as it can connect the adhesive film 210 and the lead film 220. Examples of the connecting tape 230 for connection include a silicon tape.
　連結用接続テープ２３０の長さは特に制限されないが、長すぎると連結用接続テープ２３０の貼付け時の作業性が低下する可能性がある。具体的には、連結用接続テープ２３０を用いて支持フィルム２１１及びリードフィルム２２０を接続する際に、連結用接続テープ２３０にシワが入る可能性がある。このような観点から、連結用接続テープ２３０の長さＬ１３の上限値は、１２０ｍｍ未満であることが好ましく、１１０ｍｍ以下であることがさらに好ましい。すなわち、連結用接続テープ２３０の長さが１２０ｍｍ以上となる場合、極稀に連結用接続テープ２３０にシワが入る場合がある。しかし、第１の実施形態で規定している連結用接続テープ２３０の長さであれば、仮にこのようなシワが入ったとしても、実用上問題ない。すなわち、このシワは、スリットおよび巻取り、引き出しなどの後工程において特に支障を生じない。また、シワの凹凸によっても接着フィルムの品質は実用上低下しない。一方、連結用接続テープ２３０が短すぎると、接着フィルム２１０とリードフィルム２２０との接続強度が低下する可能性がある。さらに、作業性が低下する可能性もある。このため、連結用接続テープ２３０の長さＬ１３は、１０ｍｍ以上であることが好ましく、３０ｍｍ以上であることが更に好ましい。 The length of the connecting tape for connection 230 is not particularly limited, but if it is too long, the workability when attaching the connection tape for connection 230 may be reduced. Specifically, when the support film 211 and the lead film 220 are connected using the connection tape for connection 230, there is a possibility that the connection tape for connection 230 is wrinkled. From such a viewpoint, the upper limit value of the length L13 of the connecting tape for connection 230 is preferably less than 120 mm, and more preferably 110 mm or less. That is, when the length of the connecting tape for connection 230 is 120 mm or more, wrinkles may occur in the connecting tape for connection rarely. However, if the length of the connecting tape for connection 230 defined in the first embodiment is used, there is no practical problem even if such wrinkles are included. That is, this wrinkle does not cause any particular trouble in subsequent processes such as slitting, winding and drawing. Moreover, the quality of the adhesive film is not practically deteriorated by wrinkles. On the other hand, if the connecting tape for connection 230 is too short, the connection strength between the adhesive film 210 and the lead film 220 may be reduced. Furthermore, workability may be reduced. For this reason, the length L13 of the connecting tape for connection 230 is preferably 10 mm or more, and more preferably 30 mm or more.
　なお、支持フィルム２１１に接着される部分の長さＬ１１とリードフィルム２２０に接着される部分の長さＬ１２との比Ｌ１１：Ｌ１２は特に制限されないが、接着フィルム２１０とリードフィルム２２０との接続強度を維持するという観点からは、例えば３：７～７：３であってもよい。 The ratio L11: L12 between the length L11 of the portion bonded to the support film 211 and the length L12 of the portion bonded to the lead film 220 is not particularly limited, but the connection strength between the adhesive film 210 and the lead film 220 is not limited. For example, the ratio may be 3: 7 to 7: 3.
　また、連結用接続テープ２３０の厚みは、特に制限はされず、巻取りや取り扱い性の観点から、適宜設定されればよい。 Moreover, the thickness of the connecting tape for connection 230 is not particularly limited, and may be set as appropriate from the viewpoint of winding and handling.
　なお、図１３では、接着フィルム２１０の端部とリードフィルム２２０の端部とが隣接しているが、これらの間には隙間が形成されていてもよい。ただし、両者は重なっていないことが好ましい。両者が重なっている場合、重なり部分が段差となる。この段差は、超音波接続時の凹凸と同様の問題を生じさせる可能性がある。 In FIG. 13, the end of the adhesive film 210 and the end of the lead film 220 are adjacent to each other, but a gap may be formed between them. However, it is preferable that both do not overlap. When both are overlapped, the overlapping portion becomes a step. This level difference may cause the same problem as the unevenness at the time of ultrasonic connection.
　硬化層２４０は、接着層２１２の硬化物を含み、支持フィルム２１１の他方の面２１１ｂからリードフィルム２２０の他方の面２２０ｂまでに亘って形成される。これにより、硬化層２４０は、接着フィルム２１０とリードフィルム２２０とを接続する。 The cured layer 240 includes a cured product of the adhesive layer 212 and is formed from the other surface 211 b of the support film 211 to the other surface 220 b of the lead film 220. Thereby, the hardened layer 240 connects the adhesive film 210 and the lead film 220.
　接着フィルム２１０とリードフィルム２２０との接続強度を維持するという観点からは、硬化層２４０の支持フィルム２１１側の長さＬ１４は、１５０ｍｍ以上が好ましく、３００ｍｍ以上がより好ましく、４００ｍｍ以上が更により好ましい。また、長さＬ１４が長くなりすぎると接続に使用できるためのフィルム長さが減少するため、短いことが望ましい。一例として、長さＬ１４は、５５０ｍｍ以下が好ましく、５００ｍｍ以下がより好ましく、４５０ｍｍ以下が更により好ましい。また、硬化層２４０のリードフィルム２２０側の長さＬ１５は、リードフィルム２２０の長さに略一致していればよいが、リードフィルム２２０より短くてもよいことはもちろんである。 From the viewpoint of maintaining the connection strength between the adhesive film 210 and the lead film 220, the length L14 of the cured layer 240 on the support film 211 side is preferably 150 mm or more, more preferably 300 mm or more, and even more preferably 400 mm or more. . Further, if the length L14 becomes too long, the film length that can be used for connection decreases, so it is desirable that the length L14 is short. As an example, the length L14 is preferably 550 mm or less, more preferably 500 mm or less, and even more preferably 450 mm or less. Further, the length L15 on the lead film 220 side of the hardened layer 240 may be substantially equal to the length of the lead film 220, but of course may be shorter than the lead film 220.
　硬化層２４０は接着層２１２の硬化物を含むので、透過性を有する。接着層２１２は、硬化によって結晶性が高まるからである。このため、リードフィルム２２０上に硬化層２４０を形成しても、リードフィルム２２０は視認可能となる。 Since the cured layer 240 includes a cured product of the adhesive layer 212, the cured layer 240 has transparency. This is because the adhesive layer 212 has higher crystallinity due to curing. For this reason, even if the hardened layer 240 is formed on the lead film 220, the lead film 220 is visible.
　硬化層２４０の硬化度（反応率）は特に制限されないが、５０％以上であることが好ましい。この場合、接着フィルム２１０とリードフィルム２２０との接続強度をさらに高めることができる。この硬化度（反応率）は、赤外分光光度計（品番ＦＴ／ＩＲ－４１００、日本分光社製）を用いて、硬化処理前と硬化処理後の重合に寄与する官能基の減衰量（％）から算出することが可能である。 The degree of cure (reaction rate) of the cured layer 240 is not particularly limited, but is preferably 50% or more. In this case, the connection strength between the adhesive film 210 and the lead film 220 can be further increased. This degree of cure (reaction rate) was determined by using an infrared spectrophotometer (product number FT / IR-4100, manufactured by JASCO Corporation), the amount of attenuation of functional groups that contribute to the polymerization before and after the curing treatment (% ).
　また、硬化層２４０は、接着フィルム２１０として使用できない部分なので、接着層２１２と容易に区別できることが好ましい。この点、硬化層２４０は接着層２１２の硬化物を含むので、接着層２１２よりも若干厚みが小さくなっている。この点で硬化層２４０は接着層２１２と区別可能である。ただし、硬化層２４０の視認性を上げるために、硬化層２４０が着色されていてもよい。硬化層２４０を着色する方法は後述するが、概略的には、着色剤を含有する接着剤組成物を接着層２１２の硬化前に接着層２１２に含有させればよい。着色剤の種類は特に制限されず、異方性導電材料に適用可能なものであればどのようなものであってもよい。 Further, since the hardened layer 240 is a portion that cannot be used as the adhesive film 210, it is preferable that it can be easily distinguished from the adhesive layer 212. In this regard, the cured layer 240 includes a cured product of the adhesive layer 212, and thus the thickness is slightly smaller than that of the adhesive layer 212. In this respect, the hardened layer 240 is distinguishable from the adhesive layer 212. However, in order to increase the visibility of the cured layer 240, the cured layer 240 may be colored. Although the method of coloring the hardened layer 240 will be described later, generally, an adhesive composition containing a colorant may be contained in the adhesive layer 212 before the adhesive layer 212 is cured. The kind of the colorant is not particularly limited, and any colorant may be used as long as it can be applied to the anisotropic conductive material.
　＜２ｂ．フィルム連結体の幅＞
　フィルム連結体２０１の幅は特に制限されないが、１ｍｍ未満であってもよい。本実施形態によれば、フィルム連結体２０１の幅が１ｍｍ未満であっても、接着フィルム２１０とリードフィルム２２０との接続強度を高い値（例えば５．０Ｎ以上）に維持することができる。フィルム連結体の幅は０．８ｍｍ以下であってもよく、０．６ｍｍ以下であってもよい。また、フィルム連結体２０１の幅は、接着フィルム（接着層、支持フィルム）と同じ幅であってもよい。 <2b. Width of film assembly>
The width of the film connector 201 is not particularly limited, but may be less than 1 mm. According to this embodiment, even if the width | variety of the film coupling body 201 is less than 1 mm, the connection strength of the adhesive film 210 and the lead film 220 can be maintained at a high value (for example, 5.0 N or more). The width of the film connector may be 0.8 mm or less, or 0.6 mm or less. Moreover, the width | variety of the film coupling body 201 may be the same width as an adhesive film (an adhesive layer, a support film).
　＜３ｂ．接着フィルムとリードフィルムとの接続強度＞
　接着フィルム２１０とリードフィルム２２０との接続強度は、リール体４００に求められる特性等に応じて調整されればよいが、５．０Ｎ以上であることが好ましい。なお、接続強度は、上述した連結用接続テープ２３０の長さＬ１３、Ｌ１１：Ｌ１２、硬化層２４０の支持フィルム２１１側の長さＬ１４、硬化層２４０のリードフィルム２２０側の長さＬ１５、及び硬化層２４０の硬化度によって調整可能である。これらのパラメータが好ましい範囲内の値となる場合に、接続強度が５．０Ｎ以上となりうる。接続強度は、５．５Ｎ以上であることがさらに好ましい。 <3b. Connection strength between adhesive film and lead film>
The connection strength between the adhesive film 210 and the lead film 220 may be adjusted according to the characteristics required of the reel unit 400, but is preferably 5.0 N or more. The connection strength includes the length L13, L11: L12 of the connecting tape for coupling 230 described above, the length L14 of the cured layer 240 on the support film 211 side, the length L15 of the cured layer 240 on the lead film 220 side, and cured. The degree of cure of the layer 240 can be adjusted. When these parameters are values within a preferable range, the connection strength can be 5.0 N or more. More preferably, the connection strength is 5.5 N or more.
　＜４ｂ．接続強度の測定方法＞
　つぎに、図１４に基づいて、接続強度の測定方法について説明する。まず、試験台３００に固定されたクランプ３１０にリードフィルム２２０及び硬化層２４０を固定する。ついで、引張試験機３２０に接着フィルム２１０を固定する。ここで、接着フィルム２１０は長いので、リードフィルム２２０との接続部分の近傍で接着フィルム２１０を切断した上で、接着フィルム２１０を引張試験機３２０に固定する。ついで、引張試験機３２０を鉛直上方に引き上げる。引張試験機３２０を引き上げていくと、引張試験機３２０に掛かる荷重が大きくなっていき、最終的には接着フィルム２１０がリードフィルム２２０から分離する。この時に引張試験機３２０に掛かる荷重を測定し、測定値を接続強度とする。 <4b. Connection strength measurement method>
Next, a connection strength measuring method will be described with reference to FIG. First, the lead film 220 and the hardened layer 240 are fixed to the clamp 310 fixed to the test table 300. Next, the adhesive film 210 is fixed to the tensile tester 320. Here, since the adhesive film 210 is long, the adhesive film 210 is fixed to the tensile tester 320 after cutting the adhesive film 210 in the vicinity of the connection portion with the lead film 220. Next, the tensile tester 320 is pulled up vertically. As the tensile tester 320 is pulled up, the load applied to the tensile tester 320 increases and eventually the adhesive film 210 is separated from the lead film 220. At this time, the load applied to the tensile tester 320 is measured, and the measured value is defined as the connection strength.
　＜５ｂ．リール体の構成＞
　つぎに、図１５～図１６に基づいて、リール体４００の構成について説明する。図１５及び図１６に示すように、リール体４００は、フィルム連結体２０１と、巻芯４２０と、フランジ４２１、４２２と、固定用接続テープ２６０とを備える。 <5b. Reel configuration>
Next, the configuration of the reel unit 400 will be described with reference to FIGS. As shown in FIGS. 15 and 16, the reel body 400 includes a film coupling body 201, a winding core 420, flanges 421 and 422, and a fixing connection tape 260.
　巻芯４２０は、円筒形状となっており、リール体４００の回転軸となる。巻芯４２０の外径（外径面の直径）は特に制限されず、リール体４００の用途等に応じて適宜決定されればよい。例えば、巻芯４２０の外径（外径面の直径）は４５～９５ｍｍ程度であってもよい。 The winding core 420 has a cylindrical shape and serves as a rotation axis of the reel body 400. The outer diameter (the diameter of the outer diameter surface) of the winding core 420 is not particularly limited, and may be appropriately determined according to the use of the reel unit 400 and the like. For example, the outer diameter (the diameter of the outer diameter surface) of the winding core 420 may be about 45 to 95 mm.
　また、図１６に示すように、巻芯４２０の外径面４２０ａには、フィルム連結体２０１のリードフィルム２２０及び硬化層２４０が固定用接続テープ２６０により固定される。なお、硬化層２４０のリードフィルム２２０側の長さＬ１５がリードフィルム２２０よりも短い場合、リードフィルム２２０のみが外径面４２０ａに固定されてもよい。そして、巻芯４２０にフィルム連結体２０１が巻き付けられる。巻芯４２０にフィルム連結体２０１が巻き付けられることで、フィルム巻装体が構成される。固定用接続テープ２６０の種類は特に問われないが、接着フィルム２１０とリードフィルム２２０との接続強度を確保するという観点からは、連結用接続テープ２３０と同種のテープであることが好ましい。固定用接続テープ２６０の厚みは、特に制限はされず、巻取りや取り扱い性の観点から、適宜設定されればよい。 Further, as shown in FIG. 16, the lead film 220 and the hardened layer 240 of the film coupling body 201 are fixed to the outer diameter surface 420 a of the core 420 by a fixing connection tape 260. When the length L15 on the lead film 220 side of the hardened layer 240 is shorter than the lead film 220, only the lead film 220 may be fixed to the outer diameter surface 420a. Then, the film connector 201 is wound around the core 420. A film winding body is configured by winding the film coupling body 201 around the winding core 420. The type of the connection tape for fixing 260 is not particularly limited, but from the viewpoint of securing the connection strength between the adhesive film 210 and the lead film 220, the same type of tape as the connection tape for connection 230 is preferable. The thickness of the fixing connection tape 260 is not particularly limited, and may be set as appropriate from the viewpoint of winding and handling.
　フランジ４２１、４２２は、巻芯４２０の軸方向の両端部にそれぞれ設けられる。フランジ４２１、４２２は円形の部材であり、互いに平行となるように巻芯４２０に取り付けられる。フランジ４２１、４２２間にフィルム連結体２０１が収納される。 The flanges 421 and 422 are provided at both ends of the core 420 in the axial direction, respectively. The flanges 421 and 422 are circular members and are attached to the core 420 so as to be parallel to each other. The film connector 201 is accommodated between the flanges 421 and 422.
　＜６ｂ．フィルム連結体の製造方法＞
　つぎに、図１７及び図１８に基づいて、フィルム連結体２０１の製造方法を説明する。まず、支持フィルム原反２７１及びリードフィルム原反２８０を用意する。支持フィルム原反２７１は、支持フィルム２１１よりも幅広かつ支持フィルム２１１と同一長さを有するフィルムである。リードフィルム原反２８０は、リードフィルム２２０よりも幅広かつリードフィルム２２０と同一長さを有するフィルムである。ついで、支持フィルム原反２７１及びリードフィルム原反２８０の一方の面２７１ａ、２８０ａ同士を連結用接続テープ２３０で接続する（接続工程）。これにより、原反連結体２０１ａを作製する。一方、接着層２１２と同一組成を有する接着剤組成物Ｙを作製する。ついで、原反連結体２０１ａを搬送装置にセットする。この搬送装置は、原反連結体２０１ａを矢印Ａ方向に搬送可能となっている。また、搬送装置には、塗工装置５００及び光源６００が設置されている。塗工装置５００の種類は特に制限されず、例えばグラビアコータ、ワイヤーバーコータ、またはダイコータなどであってもよい。光源６００は、接着層原反２７２を硬化可能な波長の光を発する光源であり、例えば、紫外線ランプなどであってもよい。光源６００の照射条件は、所望の硬化度が得られるように調整されれば良い。光源６００は、塗工装置５００よりも搬送方向の下流側に設置されている。 <6b. Manufacturing method of film assembly>
Below, based on FIG.17 and FIG.18, the manufacturing method of the film coupling body 201 is demonstrated. First, a support film original fabric 271 and a lead film original fabric 280 are prepared. The original support film 271 is a film that is wider than the support film 211 and has the same length as the support film 211. The lead film original fabric 280 is a film that is wider than the lead film 220 and has the same length as the lead film 220. Next, one surface 271a and 280a of the support film original fabric 271 and the lead film original fabric 280 are connected to each other with a connection tape 230 for connection (connection process). Thereby, the raw fabric connector 201a is produced. On the other hand, an adhesive composition Y having the same composition as the adhesive layer 212 is produced. Next, the raw fabric connector 201a is set on the transport device. This conveying apparatus can convey the original fabric connector 201a in the direction of arrow A. Moreover, the coating apparatus 500 and the light source 600 are installed in the conveying apparatus. The type of coating apparatus 500 is not particularly limited, and may be, for example, a gravure coater, a wire bar coater, or a die coater. The light source 600 is a light source that emits light having a wavelength capable of curing the adhesive layer original fabric 272, and may be, for example, an ultraviolet lamp. The irradiation conditions of the light source 600 may be adjusted so as to obtain a desired degree of curing. The light source 600 is installed downstream of the coating apparatus 500 in the transport direction.
　ついで、原反連結体２０１ａを矢印Ａ方向に搬送しながら、塗工装置５００を用いて支持フィルム原反２７１及びリードフィルム原反２８０の他方の面２７１ｂ、２８０ｂ上に接着剤組成物Ｙを塗工する（接着層形成工程）。これにより、他方の面２７１ｂ、２８０ｂ上に接着層原反２７２を形成する。ついで、照射開始位置が光源６００に到達したタイミングで、光源６００から接着層原反２７２に光を照射する（硬化工程）。ここで、照射開始位置は、支持フィルム原反２７１及びリードフィルム原反２８０の境界部分から距離Ｌ１４だけ支持フィルム原反２７１側に離れた位置である。ついで、照射終了位置が光源６００に到達したタイミングで、光源６００からの光の照射を停止する。ここで、照射終了位置は、支持フィルム原反２７１及びリードフィルム原反２８０の境界部分から距離Ｌ１５だけリードフィルム原反２８０側に離れた位置である。照射開始位置から照射終了位置までの間に存在する接着層原反２７２は、硬化対象接着層となる。 Next, the adhesive composition Y is applied onto the other surfaces 271b and 280b of the support film original fabric 271 and the lead film original fabric 280 using the coating apparatus 500 while conveying the original fabric connector 201a in the direction of arrow A. Work (adhesive layer forming step). Thereby, the adhesive layer original fabric 272 is formed on the other surfaces 271b and 280b. Next, light is irradiated from the light source 600 to the original adhesive layer fabric 272 at the timing when the irradiation start position reaches the light source 600 (curing step). Here, the irradiation start position is a position away from the boundary portion between the support film original fabric 271 and the lead film original fabric 280 by the distance L14 toward the support film original fabric 271 side. Next, the irradiation of light from the light source 600 is stopped at the timing when the irradiation end position reaches the light source 600. Here, the irradiation end position is a position away from the boundary portion between the support film original fabric 271 and the lead film original fabric 280 by the distance L15 toward the lead film original fabric 280 side. The adhesive layer original fabric 272 that exists between the irradiation start position and the irradiation end position becomes the adhesive layer to be cured.
　これにより、支持フィルム原反２７１及びリードフィルム原反２８０の境界部分およびその周辺部分に形成された接着層原反２７２を硬化させる。すなわち、原反連結体２０１ａ上に硬化層原反２９０を形成する。以上の工程により、図１８に示すフィルム連結体原反２０１ｂを作成する。ついで、フィルム連結体原反２０１ｂを所望の幅にスリットすることで、フィルム連結体２０１を作製する。 Thereby, the adhesive layer original fabric 272 formed on the boundary portion of the support film original fabric 271 and the lead film original fabric 280 and its peripheral portion is cured. That is, the cured layer original fabric 290 is formed on the original fabric connector 201a. Through the above-described steps, a film connector original fabric 201b shown in FIG. 18 is created. Subsequently, the film coupling body 201b is produced by slitting the film coupling body fabric 201b to a desired width.
　接着剤組成物に光硬化可能開始剤が含まれている場合には、上述した方法によりフィルム連結体２０１を作製することができる。しかし、接着剤組成物には光硬化可能開始剤が含まれない場合がある。例えば、接着剤組成物に熱アニオン系硬化剤が含まれる場合、熱アニオン系硬化剤は光照射によって活性化しない。このため、上述した方法ではフィルム連結体２０１を作製することができない。この場合、以下の方法によりフィルム連結体２０１を作製すればよい。すなわち、光源６００の上流に補助塗工装置を設置する。補助塗工装置は、接着層原反２７０上に補助接着剤組成物を塗工する。補助接着剤組成物は、光硬化可能開始剤及び光硬化可能開始剤によって硬化する重合性化合物を含む。例えば、補助接着剤組成物は、光ラジカル系硬化開始剤及びアクリル系重合性化合物を含む。補助接着剤組成物は、上述した着色剤を含んでいても良い。これにより、硬化層２４０が着色される。そして、照射開始位置が補助塗工装置に到達したタイミングで、補助塗工装置を駆動する。これにより、補助塗工装置は、接着層原反２７０上に補助接着剤組成物を塗工する（硬化準備工程）。ついで、照射終了位置が補助塗工装置に到達したタイミングで、補助塗工装置を停止する。この工程を上述した工程に追加することで、硬化対象接着層内に補助接着剤組成物が含有されるようになる。したがって、硬化対象接着層は、光源６００からの光照射により硬化する。なお、補助塗工装置は、補助接着剤組成物を接着層原反２７２に含有させることができる装置であればよい。例えば、補助塗工装置は、上述した塗工装置５００と同様の塗工装置であってもよく、補助接着剤組成物を接着層原反２７２に噴霧可能な噴霧装置であってもよい。 When the adhesive composition contains a photocurable initiator, the film connector 201 can be produced by the method described above. However, the adhesive composition may not include a photocurable initiator. For example, when a thermal anionic curing agent is included in the adhesive composition, the thermal anionic curing agent is not activated by light irradiation. For this reason, the film coupling body 201 cannot be produced by the method described above. In this case, the film connector 201 may be produced by the following method. That is, an auxiliary coating device is installed upstream of the light source 600. The auxiliary coating apparatus applies the auxiliary adhesive composition onto the adhesive layer original fabric 270. The auxiliary adhesive composition includes a photocurable initiator and a polymerizable compound that is cured by the photocurable initiator. For example, the auxiliary adhesive composition includes a photo radical curing initiator and an acrylic polymerizable compound. The auxiliary adhesive composition may contain the colorant described above. Thereby, the hardened layer 240 is colored. Then, the auxiliary coating device is driven at the timing when the irradiation start position reaches the auxiliary coating device. Thus, the auxiliary coating apparatus applies the auxiliary adhesive composition onto the adhesive layer original fabric 270 (curing preparation step). Next, the auxiliary coating device is stopped at the timing when the irradiation end position reaches the auxiliary coating device. By adding this step to the above-described step, the auxiliary adhesive composition is contained in the curing target adhesive layer. Accordingly, the adhesive layer to be cured is cured by light irradiation from the light source 600. The auxiliary coating device may be any device that can contain the auxiliary adhesive composition in the adhesive layer raw fabric 272. For example, the auxiliary coating apparatus may be a coating apparatus similar to the above-described coating apparatus 500, or may be a spraying apparatus that can spray the auxiliary adhesive composition onto the original adhesive layer 272.
　まず、第１の実施形態に対応する実施例を説明する。
　（実施例１）
　（連結体の作製）
　実施例１では、以下の工程によりフィルム連結体１０ａを作製した。フェノキシ樹脂（新日鐵化学社製ＹＰ５０）６０質量部と、ラジカル重合性樹脂（ダイセル・サイテック社製ＥＢ－６００）３６質量部と、シランカップリング剤（信越化学工業社製ＫＢＭ－５０３）２質量部と、反応開始剤（日本油脂社製パーヘキサＣ）２質量部とを混合することで、接着剤組成物を作製した。ついで、この接着剤組成物に導電粒子（積水化学工業社製ＡＵＬ７０４）を、接着層３２内の粒子面密度が８０００個／ｍｍ２となるように分散させた。ついで、導電粒子が分散した接着剤組成物を長さ５０ｍ超のＰＥＴフィルム（厚み５０μｍ、支持フィルム原反）上に厚さ１４μｍとなるように塗工した。これにより、支持フィルム原反の表面に接着層３２を形成した。すなわち、接着フィルム原反を作製した。実施例１では、接着層３２を異方性導電層とした。 First, an example corresponding to the first embodiment will be described.
(Example 1)
(Production of linked body)
In Example 1, the film connector 10a was produced by the following steps. 60 parts by mass of a phenoxy resin (YP50 manufactured by Nippon Steel Chemical Co., Ltd.), 36 parts by mass of a radical polymerizable resin (EB-600 manufactured by Daicel-Cytec), and a silane coupling agent (KBM-503 manufactured by Shin-Etsu Chemical Co., Ltd.) 2 An adhesive composition was prepared by mixing 2 parts by mass of a mass part and a reaction initiator (Perhexa C manufactured by NOF Corporation). Next, conductive particles (AUL704 manufactured by Sekisui Chemical Co., Ltd.) were dispersed in this adhesive composition so that the particle surface density in the adhesive layer 32 was 8000 particles / mm 2 . Next, the adhesive composition in which the conductive particles were dispersed was applied to a thickness of 14 μm on a PET film (thickness 50 μm, support film original fabric) having a length of more than 50 m. Thereby, the adhesive layer 32 was formed on the surface of the support film original fabric. That is, an adhesive film original fabric was produced. In Example 1, the adhesive layer 32 was an anisotropic conductive layer.
　ついで、接着フィルム原反の長さ方向の一端部から接着層３２を除去することで、突出部３１ａを形成した。ついで、支持フィルム原反と同様のＰＥＴフィルムをリードフィルム原反として用意した。ついで、このリードフィルム原反と接着フィルム原反の突出部３１ａとを連結用接続テープ５０により接続することで、連結体原反を作製した。ここで、連結用接続テープ５０としては、サンエー化研社製アドックＳ（品番：Ｓ－１００Ｂ）を使用した。この連結用接続テープ５０はシリコンテープの一例である。また、接続テープ長さを１２０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも６０ｍｍとした。したがって、Ｌ１：Ｌ２＝１：１となる。また、接着フィルム原反の端部（突出部３１ａの端部）とリードフィルム原反の端部とが隣接している。ついで、連結体原反を幅０．８ｍｍに切断することで、フィルム連結体１０ａを作製した。 Then, the protruding portion 31a was formed by removing the adhesive layer 32 from one end of the adhesive film original in the length direction. Next, a PET film similar to the support film original fabric was prepared as the lead film original fabric. Next, the lead film original fabric and the protruding portion 31a of the adhesive film original fabric were connected by a connecting tape 50 for connection, thereby producing a connector original fabric. Here, as the connection tape 50 for connection, Adock S (product number: S-100B) manufactured by Sanei Kaken Co., Ltd. was used. This connecting tape for connection 50 is an example of a silicon tape. Further, the length of the connecting tape was 120 mm, and the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 60 mm. Therefore, L1: L2 = 1: 1. Moreover, the edge part (end part of the protrusion part 31a) of the adhesive film original fabric, and the edge part of a lead film original fabric adjoin. Next, the joined film body was cut into a width of 0.8 mm to produce a joined film body 10a.
　（接続強度の測定）
　ついで、上述した測定方法により接続強度を測定した。引張試験機としてはエー・アンド・デイ社製テンシロンを使用した。この結果、接続強度は５．２Ｎとなった。 (Measurement of connection strength)
Next, the connection strength was measured by the measurement method described above. Tensilon manufactured by A & D was used as the tensile tester. As a result, the connection strength was 5.2N.
　（リール体の作製）
　直径９５ｍｍの巻芯２０を有する空リールを用意した。そして、固定用接続テープ６０を用いて巻芯２０とフィルム連結体１０ａのリードフィルム４０とを接続した。ここで、固定用接続テープ６０は連結用接続テープ５０と同様のものを使用した。また、リードフィルム４０が巻芯２０から外れないように、固定用接続テープ６０の長さを３０ｍｍとし、固定用接続テープ６０とリードフィルム４０との接着面長さ、固定用接続テープ６０と巻芯２０との接着面長さをいずれも１５ｍｍとした。ついで、接着フィルム３０を巻芯２０に巻きつけることで、リール体１０を作製した。後述する引出試験を行うために、同様のリール体１０を合計１００個作製した。 (Production of reel body)
An empty reel having a core 20 having a diameter of 95 mm was prepared. And the winding core 20 and the lead film 40 of the film coupling body 10a were connected using the connection tape 60 for fixation. Here, the fixing connection tape 60 is the same as the connection tape 50 for connection. Further, the length of the fixing connection tape 60 is set to 30 mm so that the lead film 40 does not come off from the core 20, the length of the adhesive surface between the fixing connection tape 60 and the lead film 40, and the fixing connection tape 60 and the winding. The length of the adhesive surface with the core 20 was 15 mm. Subsequently, the reel body 10 was produced by winding the adhesive film 30 around the core 20. A total of 100 similar reel bodies 10 were produced in order to perform a drawer test described later.
　（引出試験）
　引出試験機エー・アンド・デイ社製テンシロンを用いてリール体１０から接着フィルム３０を７００ｍｍ／ｓｅｃで引き出す引出試験を行った。引出試験は、リール体１０から全ての接着フィルム３０が引き出されるまで行った。引き出しの途中で接着フィルム３０の引き出しを行えなくなった場合には、接着フィルム３０がリードフィルム４０から外れたものとし、引出試験を終了した。上記引出試験を１００個のリール体１０に対して行い、接着フィルム３０がリードフィルム４０から外れたリール体１０の数を１００で除算することで、テープ外れ発生率を算出した。テープ外れ発生率が小さいほど、接着フィルム３０はリードフィルム４０から外れにくいと言える。 (Withdrawal test)
A pull-out test was conducted to pull out the adhesive film 30 from the reel body 10 at 700 mm / sec using a pull-out tester A & D Corporation Tensilon. The pull-out test was performed until all the adhesive films 30 were pulled out from the reel body 10. When the adhesive film 30 could not be pulled out in the middle of pulling out, it was assumed that the adhesive film 30 was detached from the lead film 40, and the pull-out test was completed. The pull-out test was performed on 100 reel bodies 10, and the number of reel bodies 10 from which the adhesive film 30 was detached from the lead film 40 was divided by 100, thereby calculating the tape detachment occurrence rate. It can be said that the adhesive film 30 is less likely to be detached from the lead film 40 as the tape release rate is smaller.
　（実施例２）
　接続テープ長さを３００ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも１５０ｍｍとした他は、実施例１と同様の処理を行った。 (Example 2)
The same processing as in Example 1 was performed except that the length of the connecting tape was 300 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 150 mm.
　（実施例３）
　接続テープ長さを４００ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも２００ｍｍとした他は、実施例１と同様の処理を行った。 (Example 3)
The same processing as in Example 1 was performed, except that the length of the connecting tape was 400 mm, the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 200 mm.
　（実施例４）
　連結体原反を幅０．６ｍｍに切断した他は、実施例１と同様の処理を行った。 Example 4
The same treatment as in Example 1 was performed, except that the raw connecting body was cut into a width of 0.6 mm.
　（実施例５）
　接着面５１の長さＬ１と、接着面５２の長さＬ２との比を３：７とした他は、実施例１と同様の処理を行った。 (Example 5)
The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 3: 7.
　（実施例６）
　接着面５１の長さＬ１と、接着面５２の長さＬ２との比を７：３とした他は、実施例１と同様の処理を行った。 (Example 6)
The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 7: 3.
　（参考例）
　接続テープ長さを３０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも１５ｍｍとした。また、連結体原反を幅１．５ｍｍに切断した。上記以外は実施例１と同様の処理を行った。 (Reference example)
The length of the connecting tape was 30 mm, and the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 were both 15 mm. Moreover, the connecting body original fabric was cut into a width of 1.5 mm. Except for the above, the same processing as in Example 1 was performed.
　（比較例１）
　接続テープ長さを３０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも１５ｍｍとした他は、実施例１と同様の処理を行った。 (Comparative Example 1)
The same processing as in Example 1 was performed except that the length of the connecting tape was 30 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 15 mm.
　（比較例２）
　接続テープ長さを６０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも３０ｍｍとした他は、実施例１と同様の処理を行った。 (Comparative Example 2)
The same processing as in Example 1 was performed except that the length of the connecting tape was 60 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 30 mm.
　（比較例３）
　接続テープ長さを９０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも４５ｍｍとした他は、実施例１と同様の処理を行った。 (Comparative Example 3)
The same processing as in Example 1 was performed except that the length of the connecting tape was 90 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 45 mm.
　（比較例４）
　接続テープ長さを３０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも１５ｍｍとした他は、実施例４と同様の処理を行った。 (Comparative Example 4)
The same processing as in Example 4 was performed except that the length of the connecting tape was 30 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 15 mm.
　（比較例５）
　接続テープ長さを６０ｍｍとし、接着面５１の長さＬ１、接着面５２の長さＬ２をいずれも３０ｍｍとした他は、実施例４と同様の処理を行った。 (Comparative Example 5)
The same processing as in Example 4 was performed except that the length of the connecting tape was 60 mm, the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52 were both 30 mm.
　（比較例６）
　接着面５１の長さＬ１と、接着面５２の長さＬ２との比を２：８とした他は、実施例１と同様の処理を行った。 (Comparative Example 6)
The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was set to 2: 8.
　（比較例７）
　接着面５１の長さＬ１と、接着面５２の長さＬ２との比を８：２とした他は、実施例１と同様の処理を行った。 (Comparative Example 7)
The same processing as in Example 1 was performed except that the ratio of the length L1 of the bonding surface 51 and the length L2 of the bonding surface 52 was 8: 2.
　（測定結果）
　上記各例の構造、接続強度及びテープ外れ発生率を表１にまとめて示す。 (Measurement result)
Table 1 summarizes the structures, connection strengths, and tape detachment rates of the above examples.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　（接着フィルム幅に関する考察）
　図７は、参考例の接続強度と比較例１の接続強度とを対比して示す。参考例と比較例１とは接着フィルム幅のみが異なる。図７及び表１に示される通り、接着フィルム幅を大きくすることで、接続強度が大きくなり、ひいては、接着フィルム３０がリードフィルム４０から外れにくくなる。ただし、参考例では接着フィルム幅の狭小化のニーズに対応できない。そこで、実施例では、接着フィルム幅を小さくした上で、連結用接続テープ５０を長くした。 (Consideration on adhesive film width)
FIG. 7 shows the connection strength of the reference example and the connection strength of Comparative Example 1 in comparison. Reference Example and Comparative Example 1 differ only in the adhesive film width. As shown in FIG. 7 and Table 1, the connection strength is increased by increasing the width of the adhesive film, and as a result, the adhesive film 30 is unlikely to be detached from the lead film 40. However, the reference example cannot meet the needs for narrowing the adhesive film width. Therefore, in the embodiment, the connecting tape 50 for connection is lengthened while the width of the adhesive film is reduced.
　（接続テープ長さに関する考察）
　図８は、接続テープ長さ（詳細には、接着面５１の長さＬ１と接着面５２の長さＬ２との合計長さＬ）と接続強度との対応関係を示す。図９は、テープ外れ発生率と接続強度との対応関係を示す。図１０は、接続テープ長さとテープ外れ発生率との対応関係を示す。なお、図８～図１０では、接着フィルム幅は０．８ｍｍとなっている。したがって、図８における接続テープ長さ＝３０、６０、９０ｍｍは比較例１、２、３を示し、接続テープ長さ＝１２０、３００、４００ｍｍは実施例１、２、３を示す。図８及び表１に示される通り、連結用接続テープ５０が長くなるほど、接続強度が大きくなり、ひいては、接着フィルム３０がリードフィルム４０から外れにくくなる。特に、図９、図１０及び表１に示すように、実施例１、２、３では、テープ外れ発生率が０となる。そして、実施例１、２、３では、接続強度が５．０Ｎ以上となっている。したがって、接続強度が５．０Ｎ以上であればテープ外れ発生率が０になることがわかる。また、接着フィルム３０の幅が１ｍｍ未満となる場合であっても、接続テープ長さを１２０ｍｍ以上にする（詳細には、上記合計長さＬを１２０ｍｍ以上にする）ことで、接続強度が５．０Ｎ以上になることがわかる。また、接続テープ長さが３００ｍｍとなる場合、参考例とほぼ同程度の接続強度が実現される。ただし、接続テープ長さが４００ｍｍとなっても接続強度はほとんど変わらない。したがって、接続テープ長さがある程度長くなると、接続強度が上限値に達することがわかる。 (Consideration of connecting tape length)
FIG. 8 shows the correspondence between the connection tape length (specifically, the total length L of the length L1 of the adhesive surface 51 and the length L2 of the adhesive surface 52) and the connection strength. FIG. 9 shows the correspondence between the tape detachment occurrence rate and the connection strength. FIG. 10 shows the correspondence between the connection tape length and the tape detachment occurrence rate. In FIGS. 8 to 10, the width of the adhesive film is 0.8 mm. Therefore, the connection tape lengths = 30, 60, and 90 mm in FIG. 8 indicate Comparative Examples 1, 2, and 3, and the connection tape lengths = 120, 300, and 400 mm indicate Examples 1, 2, and 3, respectively. As shown in FIG. 8 and Table 1, the longer the connecting tape for connection 50 is, the higher the connection strength is. As a result, the adhesive film 30 is less likely to be detached from the lead film 40. In particular, as shown in FIGS. 9 and 10 and Table 1, in Examples 1, 2, and 3, the tape detachment occurrence rate is zero. In Examples 1, 2, and 3, the connection strength is 5.0 N or more. Therefore, it can be seen that when the connection strength is 5.0 N or more, the tape removal occurrence rate becomes zero. Even if the width of the adhesive film 30 is less than 1 mm, the connection strength is 5 by setting the connection tape length to 120 mm or more (specifically, the total length L is set to 120 mm or more). It turns out that it becomes more than 0.0N. Further, when the length of the connection tape is 300 mm, the connection strength almost the same as that of the reference example is realized. However, even if the connection tape length is 400 mm, the connection strength hardly changes. Therefore, it can be seen that the connection strength reaches the upper limit when the length of the connection tape is increased to some extent.
　接続テープ長さが９０ｍｍとなる場合、接続テープ長さは巻芯２０の外周面の円周長さの３０％となる。また、接続テープ長さが１２０ｍｍとなる場合、接続テープ長さは巻芯２０の外周面の円周長さの４０％となる。また、接続テープ長さが３００ｍｍとなる場合、接続テープ長さは巻芯２０の外周面の１周長さ以上となる。したがって、接続テープ長さは、巻芯２０の直径の３０％より大きいことが好ましく、４０％以上であることがさらに好ましく、巻芯２０の１周長さ以上であることがさらに好ましいことがわかる。 When the connecting tape length is 90 mm, the connecting tape length is 30% of the circumferential length of the outer peripheral surface of the core 20. When the connecting tape length is 120 mm, the connecting tape length is 40% of the circumferential length of the outer peripheral surface of the core 20. Further, when the connection tape length is 300 mm, the connection tape length is equal to or longer than one circumference of the outer peripheral surface of the core 20. Therefore, it can be seen that the length of the connecting tape is preferably larger than 30% of the diameter of the core 20, more preferably 40% or more, and even more preferably one circumference or more of the core 20. .
　図１１は、接着フィルム幅が０．６ｍｍとなる場合における、接続テープ長さと接続強度との対応関係を示す。したがって、図１１における接続テープ長さ＝３０、６０ｍｍは比較例４、５を示し、接続テープ長さ＝１２０ｍｍは実施例４を示す。図１１及び表１から明らかな通り、接着フィルム幅が０．６ｍｍとなっても、上記と同様の理論が成立する。すなわち、連結用接続テープ５０が長くなるほど、接続強度が大きくなり、ひいては、接着フィルム３０がリードフィルム４０から外れにくくなる。特に、実施例４では、テープ外れ発生率が０となる。そして、実施例４では、接続強度が５．０Ｎ以上となっている。実施例４、比較例４、５によれば、接着フィルム幅が０．６ｍｍとなる場合であっても、接続テープ長さを１２０ｍｍとすることで、接続強度を５．０Ｎ以上とすることができる。 FIG. 11 shows the correspondence between the connection tape length and the connection strength when the adhesive film width is 0.6 mm. Therefore, the connection tape length = 30, 60 mm in FIG. 11 represents Comparative Examples 4 and 5, and the connection tape length = 120 mm represents Example 4. As is clear from FIG. 11 and Table 1, even if the adhesive film width is 0.6 mm, the same theory as described above is established. In other words, the longer the connecting tape for connection 50 is, the higher the connection strength is. As a result, the adhesive film 30 is less likely to be detached from the lead film 40. In particular, in Example 4, the tape detachment occurrence rate is zero. In Example 4, the connection strength is 5.0 N or more. According to Example 4 and Comparative Examples 4 and 5, even when the adhesive film width is 0.6 mm, the connection strength can be 5.0 N or more by setting the connection tape length to 120 mm. it can.
　（接着面長さの比に関する考察）
　図１２は、接着面長さの比（接着面５１の長さＬ１：接着面５２の長さＬ２）と接着強度との対応関係を示す。図１２及び表１に示されるとおり、接着面長さの比は必ずしも１：１である必要はないことがわかる。すなわち、本実施例では、接着面長さの比が３：７～７：３の範囲内の値となる場合に、接着強度が５．０Ｎ以上となる。したがって、接着面長さの比は、この範囲内で調整可能であることがわかる。 (Considerations on the ratio of adhesive surface length)
FIG. 12 shows the correspondence relationship between the ratio of the adhesive surface length (the length L1 of the adhesive surface 51 to the length L2 of the adhesive surface 52) and the adhesive strength. As shown in FIG. 12 and Table 1, it can be seen that the ratio of the adhesive surface lengths is not necessarily 1: 1. That is, in this example, when the ratio of the adhesive surface lengths is in the range of 3: 7 to 7: 3, the adhesive strength is 5.0 N or more. Therefore, it can be seen that the ratio of the adhesive surface lengths can be adjusted within this range.
　つぎに、第２の実施形態に対応する実施例を説明する。
　（実施例７）
　（連結体の作製）
　実施例７では、以下の工程によりフィルム連結体２０１を作製した。フェノキシ樹脂（新日鉄住金化学社製ＹＰ７０）２０質量部、液状エポキシ樹脂（三菱化学社製ＥＰ８２８）３０質量部、固形エポキシ樹脂（新日鉄住金化学社製ＹＤ０１４）２０質量部、熱カチオン系硬化剤（サンアプロ社製ＬＷ－Ｓ１）５質量部、及び導電粒子３０質量部を混合することで、接着剤組成物を作製した。ここで、導電粒子として、導電基材粒子（積水化学工業社製ＡＵＬ７０４）に導電基材粒子の質量に対して２０質量％の割合で酸化亜鉛を被覆した粒導電粒子を使用した。 Next, an example corresponding to the second embodiment will be described.
(Example 7)
(Production of linked body)
In Example 7, the film coupling body 201 was produced by the following steps. 20 parts by mass of phenoxy resin (YP70 manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.), 30 parts by mass of liquid epoxy resin (EP828 manufactured by Mitsubishi Chemical Co., Ltd.), 20 parts by mass of solid epoxy resin (YD014 manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.) An adhesive composition was prepared by mixing 5 parts by mass of LW-S1) and 30 parts by mass of conductive particles. Here, the particle | grain conductive particle which coat | covered the zinc oxide in the ratio of 20 mass% with respect to the mass of a conductive base material particle was used for the conductive base material particle (AUL704 by Sekisui Chemical Co., Ltd.) as a conductive particle.
　ついで、支持フィルム原反２７１として、長さ５０ｍ超、厚み５０μｍのＰＥＴフィルムを用意した。さらに、リードフィルム原反２８０として、支持フィルム原反２７１と同様のＰＥＴフィルムを用意した。リードフィルム原反２８０の長さは２ｍとした。ついで、支持フィルム原反２７１及びリードフィルム原反２８０の一方の面２７１ａ、２８０ａ同士を連結用接続テープ２３０（サンエー化研社製アドックＳ（品番：Ｓ－１００Ｂ））で接続した。連結用接続テープ２３０の長さＬ１３は３０ｍｍとし、Ｌ１１：Ｌ１２＝１：１とした。これにより、原反連結体２０１ａを作製した。そして、上述した方法により支持フィルム原反２７１及びリードフィルム原反２８０の他方の面２７１ｂ、２８０ｂ上に接着層原反２７２及び硬化層原反２９０を形成した。接着層原反２７２の厚みは１４μｍとした。また、硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４は１５０ｍｍとし、Ｌ１５はリードフィルム原反２８０と同じ長さとした。また、紫外線ランプを用いて接着層原反２７２を硬化させた。紫外線の波長は３６５ｎｍとし、積算光量は３００ｍＪ／ｃｍ２とした。また、硬化層原反２９０の硬化度を上述した方法により測定したところ、硬化度は６５％であった。以上の工程により、フィルム連結体原反２０１ｂを作製した。ついで、フィルム連結体原反２０１ｂを幅０．８ｍｍにスリットすることで、試験用のフィルム連結体２０１を作製した。 Next, a PET film having a length of more than 50 m and a thickness of 50 μm was prepared as the support film original fabric 271. Furthermore, as the lead film original fabric 280, a PET film similar to the support film original fabric 271 was prepared. The length of the lead film original fabric 280 was 2 m. Subsequently, one surface 271a, 280a of the support film original fabric 271 and the lead film original fabric 280 was connected to each other with a connecting tape for connection 230 (Adoc S (product number: S-100B) manufactured by Sanei Kaken Co., Ltd.). The length L13 of the connecting tape for connection 230 was 30 mm, and L11: L12 = 1: 1. Thereby, the raw fabric connector 201a was produced. Then, an adhesive layer original fabric 272 and a cured layer original fabric 290 were formed on the other surfaces 271b and 280b of the support film original fabric 271 and the lead film original fabric 280 by the above-described method. The thickness of the adhesive layer original fabric 272 was 14 μm. The length L14 of the cured layer original fabric 290 on the side of the support film original fabric 271 was 150 mm, and L15 was the same length as the lead film original fabric 280. Further, the adhesive layer original fabric 272 was cured using an ultraviolet lamp. The wavelength of ultraviolet rays was 365 nm, and the integrated light quantity was 300 mJ / cm 2 . Moreover, when the hardening degree of the cured layer original fabric 290 was measured by the method mentioned above, the hardening degree was 65%. Through the above steps, a film-coupled original fabric 201b was produced. Subsequently, the film coupling body 201 for a test was produced by slitting the raw film coupling body 201b to a width of 0.8 mm.
　（接続強度の測定）
　ついで、上述した測定方法により接続強度を測定した。引張試験機としてはエー・アンド・デイ社製テンシロンを使用した。接続強度の測定は５回行い、測定結果の平均値を接続強度とした。この結果、接続強度は５．１Ｎとなった。 (Measurement of connection strength)
Next, the connection strength was measured by the measurement method described above. Tensilon manufactured by A & D was used as the tensile tester. The connection strength was measured five times, and the average value of the measurement results was taken as the connection strength. As a result, the connection strength was 5.1N.
　（リール体の作製）
　直径９５ｍｍの巻芯４２０を有する空リールを用意した。そして、固定用接続テープ２６０を用いて巻芯４２０とフィルム連結体２０１のリードフィルム２２０とを接続した。ここで、固定用接続テープ２６０は連結用接続テープ２３０と同様のものを使用した。また、リードフィルム２２０が巻芯４２０から外れないように、固定用接続テープ２６０の長さを３０ｍｍとし、固定用接続テープ２６０とリードフィルム２２０との接着面長さと、固定用接続テープ２６０と巻芯４２０との接着面長さとの比を１：１程度とした。ついで、フィルム連結体２０１を巻芯４２０に巻きつけることで、リール体４００を作製した。後述する引出試験を行うために、同様のリール体４００を合計１００個作製した。 (Production of reel body)
An empty reel having a core 420 having a diameter of 95 mm was prepared. And the core 420 and the lead film 220 of the film coupling body 201 were connected using the fixing connection tape 260. Here, the fixing connection tape 260 is the same as the connection tape 230. Further, the length of the fixing connection tape 260 is set to 30 mm so that the lead film 220 does not come off from the core 420, the length of the adhesive surface between the fixing connection tape 260 and the lead film 220, the fixing connection tape 260 and the winding tape. The ratio of the adhesive surface length with the core 420 was about 1: 1. Next, the reel unit 400 was manufactured by winding the film connector 201 around the core 420. A total of 100 similar reel bodies 400 were produced in order to perform a drawer test described later.
　（引出試験）
　引出試験機エー・アンド・デイ社製テンシロンを用いてリール体４００からフィルム連結体２０１を７００ｍｍ／ｓｅｃで引き出す引出試験を行った。引出試験は、リール体４００から全てのフィルム連結体２０１が引き出されるまで行った。引き出しの途中でフィルム連結体２０１の引き出しを行えなくなった場合には、フィルム連結体２０１がリードフィルム２２０から外れたものとし、引出試験を終了した。上記引出試験を１００個のリール体４００に対して行い、フィルム連結体２０１がリードフィルム２２０から外れたリール体４００の数を１００で除算することで、テープ外れ発生率を算出した。テープ外れ発生率が小さいほど、フィルム連結体２０１はリードフィルム２２０から外れにくいと言える。実施例７のテープ外れ発生率は０であった。結果を表２にまとめて示す。なお、接続強度、シワの有無、テープ外れ発生率を総合評価した。すなわち、接続強度が５．５Ｎ以上、シワ無し、テープ外れ発生率０のすべての要件を満たす場合に総合評価を「Ａ（優れている）」とした。接続強度が５．０Ｎ以上５．５Ｎ未満、シワ無し、テープ外れ発生率０のすべての要件を満たす場合に総合評価を「Ｂ＋（Ａより劣るが優れている）」とした。接続強度が５．０Ｎ以上５．５Ｎ未満、シワが有るが実用上問題ない、テープ外れ発生率０のすべての要件を満たす場合に総合評価を「Ｂ－（Ｂ＋より劣るが実用上問題ない）」とした。総合評価Ａ、Ｂ＋、Ｂ－の条件がいずれも満たされない場合、総合評価を「Ｃ（実用上不具合がある）」とした。 (Withdrawal test)
Using a tensilon manufactured by A & D Corporation, a drawing test was conducted in which the film connected body 201 was drawn out from the reel body 400 at 700 mm / sec. The pull-out test was performed until all the film connectors 201 were pulled out from the reel body 400. When the film connector 201 could not be pulled out in the middle of pulling out, it was assumed that the film connector 201 was detached from the lead film 220, and the drawing test was completed. The pull-out test was performed on 100 reel bodies 400, and the number of reel bodies 400 from which the film coupling body 201 was detached from the lead film 220 was divided by 100, thereby calculating the tape detachment occurrence rate. It can be said that the smaller the tape release rate, the harder the film connector 201 is detached from the lead film 220. The occurrence rate of tape detachment in Example 7 was zero. The results are summarized in Table 2. The connection strength, the presence or absence of wrinkles, and the rate of tape detachment were comprehensively evaluated. That is, the overall evaluation was “A (excellent)” when the connection strength met all the requirements of 5.5 N or higher, no wrinkles, and a tape release rate of 0. When the connection strength satisfies all the requirements of 5.0 N or more and less than 5.5 N, no wrinkles, and a tape separation occurrence rate of 0, the overall evaluation was “B + (inferior to A but superior)”. If the connection strength is 5.0N or more and less than 5.5N and there are wrinkles but there is no problem in practical use, the overall evaluation is “B − (B + inferior to B + but no problem in practical use) when all the requirements of the tape release rate 0 are satisfied. ) ”. When none of the conditions of the comprehensive evaluations A, B + , and B − were satisfied, the comprehensive evaluation was set to “C (practically defective)”.
　（実施例８）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を２００ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Example 8)
The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was 200 mm. The results are summarized in Table 2.
　（実施例９）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を３００ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 Example 9
The same treatment as in Example 7 was performed except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 300 mm. The results are summarized in Table 2.
　（実施例１０）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を４００ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Example 10)
The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 400 mm. The results are summarized in Table 2.
　（実施例１１）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を５５ｍｍとし、連結用接続テープ２３０の長さＬ１３を１１０ｍｍとし、Ｌ１１：Ｌ１２＝１：１とした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Example 11)
The length L14 of the cured layer original fabric 290 on the side of the support film original fabric 271 is 55 mm, the length L13 of the connecting tape for connection 230 is 110 mm, and L11: L12 = 1: 1. Processed. The results are summarized in Table 2.
　（実施例１２）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を６０ｍｍとし、連結用接続テープ２３０の長さＬ１３を１２０ｍｍとし、Ｌ１１：Ｌ１２＝１：１とした他は実施例７と同様の処理を行った。実施例１２では、連結用接続テープ２３０で支持フィルム原反２７１及びリードフィルム原反２８０の一方の面２７１ａ、２８０ａ同士を接続する際に、連結用接続テープ２３０に若干のシワが入った。このシワは、スリットおよび巻取り、引き出しなどの後工程において特に支障を生じないものであった。さらに、シワの凹凸の接着フィルム２１０への転写は確認されなかった。このため、実用上問題はないレベルであった。結果を表２にまとめて示す。 Example 12
The length L14 of the cured layer original fabric 290 on the support film original fabric 271 side is set to 60 mm, the length L13 of the connecting tape for connection 230 is set to 120 mm, and L11: L12 = 1: 1. Processed. In Example 12, when connecting one surface 271a, 280a of the support film original fabric 271 and the lead film original fabric 280 with the connection tape 230 for connection, some wrinkles entered the connection tape 230 for connection. This wrinkle did not cause any particular trouble in subsequent processes such as slitting, winding and drawing. Furthermore, the transfer of wrinkles to the adhesive film 210 was not confirmed. For this reason, there was no problem in practical use. The results are summarized in Table 2.
　（実施例１３）
　フィルム連結体２０１の幅を０．６ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Example 13)
The same treatment as in Example 7 was performed except that the width of the film connector 201 was 0.6 mm. The results are summarized in Table 2.
　（比較例８）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を１００ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Comparative Example 8)
The same treatment as in Example 7 was performed except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was set to 100 mm. The results are summarized in Table 2.
　（比較例９）
　硬化層原反２９０の支持フィルム原反２７１側の長さＬ１４を１２０ｍｍとした他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Comparative Example 9)
The same treatment as in Example 7 was performed, except that the length L14 of the cured layer original fabric 290 on the support film original fabric 271 side was 120 mm. The results are summarized in Table 2.
　（比較例１０）
　連結用接続テープ２３０を支持フィルム原反２７１及びリードフィルム原反２８０の両面に貼り付けたこと、硬化層原反２９０を形成しなかったことの他は実施例７と同様の処理を行った。結果を表２にまとめて示す。 (Comparative Example 10)
The same treatment as in Example 7 was performed except that the connecting tape for connection 230 was attached to both surfaces of the support film original fabric 271 and the lead film original fabric 280 and the cured layer original fabric 290 was not formed. The results are summarized in Table 2.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　実施例７～１３によれば、高い接続強度及びテープ外れ発生率０を達成できた。これに対し、比較例では、接続強度が弱く、テープ外れ発生率も大きくなった。したがって、実施例７～１３では、接着フィルムの幅が狭くなった場合であっても、接着フィルムをリードフィルムから外れにくくすることが可能となった。特に、Ｌ１４が３００～４００ｍｍとなる場合、接続強度が更に高くなった。したがって、Ｌ１４は３００～４００ｍｍであることが好ましい。ただし、実施例１２では、連結用接続テープ２３０にシワが入ったので、作業性が若干低下した。したがって、連結用接続テープ２３０の長さは１２０ｍｍ未満であることが好ましい。 According to Examples 7 to 13, a high connection strength and a rate of occurrence of tape detachment of 0 could be achieved. On the other hand, in the comparative example, the connection strength was weak and the rate of tape detachment increased. Therefore, in Examples 7 to 13, it was possible to make it difficult for the adhesive film to come off the lead film even when the width of the adhesive film became narrow. In particular, when L14 is 300 to 400 mm, the connection strength is further increased. Therefore, L14 is preferably 300 to 400 mm. However, in Example 12, since the connecting tape 230 for connection was wrinkled, workability was slightly reduced. Therefore, the length of the connecting tape for connection 230 is preferably less than 120 mm.
　なお、実施例７、１０において、Ｌ１１：Ｌ１２を３：７および７：３にする以外は実施例７、１０と同様の処理を行ったところ、各実施例と略同様の結果が得られた。 In Examples 7 and 10, the same processing as in Examples 7 and 10 was performed except that L11: L12 was set to 3: 7 and 7: 3. As a result, substantially the same results as the respective examples were obtained. .
　以上、添付図面を参照しながら本発明の好適な実施形態について詳細に説明したが、本発明はかかる例に限定されない。本発明の属する技術の分野における通常の知識を有する者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本発明の技術的範囲に属するものと了解される。 The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.
　１０　　　リール体
　２０　　　巻芯
　３０　　　接着フィルム
　３１　　　支持フィルム
　３２　　　接着層
　４０　　　リードフィルム
　５０　　　連結用接続テープ
　６０　　　固定用接続テープ
　２０１　　　フィルム連結体
　２１０　　　接着フィルム
　２１１　　　支持フィルム
　２１２　　　接着層
　２２０　　　リードフィルム
　２３０　　　連結用接続テープ
　２４０　　　硬化層
　２６０　　　固定用接続テープ
　４００　　リール体
　４２０　　巻芯
　４２１、４２２　フランジ
  DESCRIPTION OF SYMBOLS 10 Reel body 20 Core 30 Adhesive film 31 Support film 32 Adhesive layer 40 Lead film 50 Connection tape 60 Connection tape 201 Connection film 210 Adhesive film 211 Support film 212 Adhesive layer 220 Lead film 230 Connection tape 240 Hardened layer 260 Connection tape for fixing 400 Reel body 420 Core 421, 422 Flange

Claims (21)

  1. 　円筒形状の巻芯と、
    　前記巻芯の周面に連結されるリードフィルムと、
    　前記巻芯に巻きつけられる幅１ｍｍ未満の接着フィルムと、
    　前記リードフィルムと前記接着フィルムとを接続する接続テープと、を備え、
    　前記接続テープによる前記リードフィルムと前記接着フィルムとの接続強度が５．０Ｎ以上である、リール体。     A cylindrical core,
    A lead film coupled to the circumferential surface of the core;
    An adhesive film having a width of less than 1 mm wound around the core;
    A connection tape for connecting the lead film and the adhesive film;
    A reel unit, wherein a connection strength between the lead film and the adhesive film by the connection tape is 5.0 N or more.
  2. 　前記接着フィルムは、支持フィルムと前記支持フィルム上に形成される接着層とを含み、
    　前記支持フィルムは、前記接着層に対して長さ方向に突出した突出部を有し、
    　前記接続テープは、前記支持フィルムの突出部と前記リードフィルムとを接続する、請求項１記載のリール体。     The adhesive film includes a support film and an adhesive layer formed on the support film,
    The support film has a protruding portion protruding in the length direction with respect to the adhesive layer,
    The reel body according to claim 1, wherein the connection tape connects the protruding portion of the support film and the lead film.
  3. 　前記接着フィルムと前記接続テープとの接着面長さと、前記リードフィルムと前記接続テープとの接着面長さとの合計長さは、前記巻芯の外周面の円周長さの３０％より大きい、請求項１または２記載のリール体。 The total length of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape is greater than 30% of the circumferential length of the outer peripheral surface of the core, The reel body according to claim 1 or 2.
  4. 　前記接着フィルムと前記接続テープとの接着面長さと、前記リードフィルムと前記接続テープとの接着面長さとの合計長さは、１２０ｍｍ以上である、請求項３記載のリール体。 The reel unit according to claim 3, wherein a total length of an adhesive surface length between the adhesive film and the connection tape and an adhesive surface length between the lead film and the connection tape is 120 mm or more.
  5. 　前記接着フィルムと前記接続テープとの接着面長さと、前記リードフィルムと前記接続テープとの接着面長さとの比は、３：７～７：３である、請求項１～４の何れか１項に記載のリール体。 The ratio of the adhesive surface length between the adhesive film and the connection tape and the adhesive surface length between the lead film and the connection tape is 3: 7 to 7: 3, according to any one of claims 1 to 4. The reel unit according to the item.
  6. 　前記接続テープは、前記接着フィルム及び前記リードフィルムの表裏表面に設けられる、請求項１～５の何れか１項に記載のリール体。 6. The reel body according to claim 1, wherein the connection tape is provided on front and back surfaces of the adhesive film and the lead film.
  7. 　前記接着フィルムの長さは５０ｍ以上である、請求項１～６の何れか１項に記載のリール体。 The reel body according to any one of claims 1 to 6, wherein the adhesive film has a length of 50 m or more.
  8. 　前記接着フィルムは異方性導電材料を含む、請求項１～７の何れか１項に記載のリール体。 The reel body according to any one of claims 1 to 7, wherein the adhesive film includes an anisotropic conductive material.
  9. 　リールの巻芯の周面に連結されるリードフィルムと、
    　前記巻芯に巻きつけられる幅１ｍｍ未満の接着フィルムと、
    　前記リードフィルムと前記接着フィルムとを接続する接続テープと、を備え、
    　前記接続テープによる前記リードフィルムと前記接着フィルムとの接続強度が５．０Ｎ以上である、フィルム連結体。     A lead film coupled to the circumferential surface of the reel core;
    An adhesive film having a width of less than 1 mm wound around the core;
    A connection tape for connecting the lead film and the adhesive film;
    The film coupling body whose connection strength of the said lead film and the said adhesive film by the said connection tape is 5.0 N or more.
  10. 　支持フィルムと、
    　前記支持フィルムの長さ方向の端部に隣接し、リールの巻芯の周面に連結されるリードフィルムと、
    　前記支持フィルム及び前記リードフィルムの一方の面同士を接続する接続テープと、
    　前記支持フィルムの他方の面上に形成される接着層と、
    　前記接着層の硬化物を含み、前記支持フィルムの他方の面から前記リードフィルムの他方の面までに亘って形成される硬化層と、を含み、
    　前記支持フィルムと前記リードフィルムとの接続強度が５．０Ｎ以上である、フィルム連結体。     A support film;
    A lead film adjacent to the longitudinal end of the support film and connected to the peripheral surface of the reel core;
    A connecting tape that connects one side of the support film and the lead film;
    An adhesive layer formed on the other surface of the support film;
    Including a cured product of the adhesive layer, and a cured layer formed from the other surface of the support film to the other surface of the lead film,
    The film coupling body whose connection strength of the said support film and the said lead film is 5.0 N or more.
  11. 　前記フィルム連結体の幅は１ｍｍ未満である、請求項１０記載のフィルム連結体。 The film connector according to claim 10, wherein the width of the film connector is less than 1 mm.
  12. 　前記接続テープの長さは１２０ｍｍ未満である、請求項１０または１１記載のフィルム連結体。 The film connector according to claim 10 or 11, wherein the length of the connection tape is less than 120 mm.
  13. 　前記硬化層は、光照射により前記接着層の硬化を開始可能な光硬化可能開始剤を含む、請求項１０～１２のいずれか１項に記載のフィルム連結体。 The film linking body according to any one of claims 10 to 12, wherein the cured layer includes a photocurable initiator capable of initiating curing of the adhesive layer by light irradiation.
  14. 　前記接着層は、前記光硬化可能開始剤を含む、請求項１３記載のフィルム連結体。 The film bonded body according to claim 13, wherein the adhesive layer contains the photocurable initiator.
  15. 　前記接着層は、異方性導電材料を含む、請求項１０～１４のいずれか１項に記載のフィルム連結体。 The film connector according to any one of claims 10 to 14, wherein the adhesive layer includes an anisotropic conductive material.
  16. 　巻芯と、
    　前記巻芯に巻きつけられた請求項１０～１５のいずれか１項に記載のフィルム連結体と、を備え、
    　前記リードフィルムは、前記巻芯に接続されている、フィルム巻装体。     Winding core,
    The film connector according to any one of claims 10 to 15, which is wound around the core.
    The lead film is a film winding body connected to the core.
  17. 　請求項１６記載のフィルム巻装体と、
    　前記巻芯の軸方向両端部に設けられたフランジ部と、を備える、リール体。     The film winding body according to claim 16,
    A reel body comprising flange portions provided at both axial ends of the core.
  18. 　支持フィルム及びリードフィルムの一方の面同士を接続テープにより接続する接続工程と、
    　接着層を前記支持フィルムの他方の面から前記リードフィルムの他方の面に亘って形成する接着層形成工程と、
    　前記支持フィルム及び前記リードフィルムの境界部分に存在する接着層である硬化対象接着層を硬化する硬化工程と、を含む、フィルム連結体の製造方法。     A connection step of connecting one side of the support film and the lead film with a connection tape;
    An adhesive layer forming step of forming an adhesive layer from the other surface of the support film to the other surface of the lead film;
    A curing step of curing an adhesive layer to be cured, which is an adhesive layer present at a boundary portion between the support film and the lead film.
  19. 　前記硬化工程は、前記硬化対象接着層に光を照射することで行われる、請求項１８記載のフィルム連結体の製造方法。 The method for producing a film joined body according to claim 18, wherein the curing step is performed by irradiating the adhesive layer to be cured with light.
  20. 　光照射により前記接着層の硬化を開始可能な光硬化可能開始剤を前記硬化対象接着層に含有させる硬化準備工程をさらに含む、請求項１９記載のフィルム連結体の製造方法。 The manufacturing method of the film coupling body of Claim 19 which further includes the hardening preparation process which makes the said hardening object adhesion layer contain the photocurable initiator which can start hardening of the said adhesion layer by light irradiation.
  21. 　前記接着層は、異方性導電材料を含む、請求項１８～２０の何れか１項に記載のフィルム連結体の製造方法。
     
          The method for producing a film joined body according to any one of claims 18 to 20, wherein the adhesive layer includes an anisotropic conductive material.

PCT/JP2016/055822 2015-02-27 2016-02-26 Reel body, film connection body, film winding body, and manufacturing method for film connection body WO2016136946A1 (en)

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