WO2020262650A1 - Rolled body, packed body, protective film and method for producing electronic device - Google Patents

Rolled body, packed body, protective film and method for producing electronic device Download PDF

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Publication number
WO2020262650A1
WO2020262650A1 PCT/JP2020/025351 JP2020025351W WO2020262650A1 WO 2020262650 A1 WO2020262650 A1 WO 2020262650A1 JP 2020025351 W JP2020025351 W JP 2020025351W WO 2020262650 A1 WO2020262650 A1 WO 2020262650A1
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WO
WIPO (PCT)
Prior art keywords
sheet
protective film
main body
roll
adhesive layer
Prior art date
Application number
PCT/JP2020/025351
Other languages
French (fr)
Japanese (ja)
Inventor
修治 飯田
泰彦 江守
武彦 佐々木
宮崎　真司
Original Assignee
Tdk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
Application filed by Tdk株式会社 filed Critical Tdk株式会社
Priority to JP2021527796A priority Critical patent/JP7425978B2/en
Publication of WO2020262650A1 publication Critical patent/WO2020262650A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
    • B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
    • 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

Definitions

  • This disclosure relates to a method for manufacturing a roll body, a packing body, a protective film, and an electronic component.
  • a green sheet is produced using a slurry containing ceramic or metal.
  • a green sheet is usually produced through a step of coating a film-like sheet with a slurry.
  • This sheet may also be referred to as a release film, a release film, or the like.
  • such sheets are often transported in a rolled state and delivered to the user.
  • Patent Document 1 proposes to set the absolute value of the electric resistance of the winding roll to a predetermined value or less when winding a sheet called a release film.
  • the present disclosure provides a roll body, a packing body, and a protective film capable of improving the yield of a product or a semi-finished product manufactured using a sheet.
  • the present disclosure also provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.
  • the roll body according to one aspect of the present disclosure includes a main body portion in which a sheet is wound in a cylindrical shape and a protective film having an adhesive layer, and the protective film is provided by an adhesive layer so as to cover the side surface of the main body portion. It is attached to the side surface.
  • a protective film is attached to such a roll body so as to cover the side surface of the main body, it is possible to suppress the generation of foreign matter due to rubbing and wear due to vibration and impact during transportation and the like. Further, since the protective film is attached to the side surface of the main body by the adhesive layer, the cutting residue or the like generated by cutting the sheet can be removed from the side surface of the main body by the adhesive force. In addition, it is possible to prevent foreign matter such as dust and dirt from adhering to the side surface of the main body from the outside. By these actions, the foreign matter adhering to the sheet is sufficiently reduced, and the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet can be suppressed. Thereby, the yield of the product or the semi-finished product can be improved.
  • the roll body according to one aspect of the present disclosure includes a main body portion in which a sheet coated with a coating liquid is wound in a cylindrical shape, and a protective film having an adhesive layer, and the protective film covers the side surface of the main body portion. It is attached to the side surface by an adhesive layer so as to cover it. According to such a roll body, it is possible to suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product obtained by molding the coating liquid coated on the sheet. Thereby, the yield of the product or the semi-finished product can be improved.
  • the coating liquid in the present disclosure means a fluid in which a solid, a liquid or a gas is dissolved or dispersed in a liquid.
  • the coating liquid may be a slurry in which particles are dispersed in the liquid.
  • the liquid may be water, an organic solvent, or a mixture thereof.
  • the particles may be arbitrary, for example, inorganic particles.
  • the sheet may include a base material and a release layer on which the coating liquid is coated. As a result, after the coating liquid is molded into a component sheet, the sheet can be smoothly peeled off from the component sheet.
  • the gel fraction in the adhesive layer of the protective film may be 85% by mass or more. If the protective film has an adhesive layer having a large gel fraction, it is sufficiently attached to the side surface of the main body. Further, when the protective film is peeled off from the side surface of the main body, it is possible to prevent a part or all of the adhesive layer from remaining on the side surface of the main body.
  • the packaging body includes the above-mentioned roll body and a packaging material for packaging the roll body.
  • the main body may be packaged during storage or transportation, but the side surface of the main body and the package may rub against each other and cause foreign matter to be generated. Since the protective film is attached to the roll body so as to cover the side surface of the main body, it is possible to suppress the generation of foreign matter due to the rubbing between the package and the side surface of the main body. Therefore, even if the product is wrapped in a package, foreign matter adhering to the sheet drawn out from the main body taken out from the package can be sufficiently reduced.
  • the method for manufacturing an electronic component includes a step of removing a protective film from the roll body described above and coating a sheet drawn out from the main body with a coating liquid, and drying the coating liquid to obtain a component sheet. It has a process and a process of manufacturing an electronic component using a component sheet. Since the above-mentioned roll body can sufficiently reduce the foreign matter adhering to the sheet, it is possible to suppress the occurrence of pinholes, scratches and the like caused by the foreign matter. Therefore, the yield of electronic components manufactured by using the sheet can be improved.
  • the protective film according to one aspect of the present disclosure is a protective film for a roll-shaped main body in which a sheet coated with a coating liquid is wound in a cylindrical shape.
  • This protective film includes a base film and an adhesive layer, and is attached to the side surface of the main body by the adhesive layer.
  • Such a protective film can reduce foreign substances adhering to the sheet drawn out from the main body and suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet. Thereby, the yield of the product or the semi-finished product can be improved.
  • the gel fraction in the adhesive layer of the protective film may be 85% by mass or more. If the protective film has an adhesive layer having a large gel fraction, it is sufficiently attached to the side surface of the main body. Further, when the protective film is peeled off from the side surface of the main body, it is possible to prevent a part or all of the adhesive layer from remaining on the side surface of the main body.
  • roll bodies, packing bodies and protective films capable of improving the yield of products or semi-finished products manufactured using sheets are provided. Further, the present disclosure provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.
  • FIG. 1 is a perspective view showing an embodiment of a roll body.
  • FIG. 2 is an exploded view of the roll body of FIG.
  • FIG. 3 is a perspective view showing a first embodiment of the package.
  • FIG. 4 is an exploded view of the package of FIG.
  • FIG. 5 is a perspective view showing a second embodiment of the package.
  • FIG. 6 is an exploded view of the package of FIG.
  • FIG. 7 is a perspective view showing a third embodiment of the package.
  • FIG. 8 is an exploded view of the package of FIG. 7.
  • FIG. 9 is a cross-sectional view showing an embodiment of the protective film.
  • FIG. 10 is a diagram for explaining an example of how to use the main body.
  • FIG. 11 is a sectional view taken along line XI-XI of the sheet 11 shown in FIG. FIG.
  • FIG. 12 is a cross-sectional view showing an example of a component sheet.
  • FIG. 13 is a cross-sectional view showing an example of an electronic component.
  • FIG. 14 is a diagram showing the evaluation points of the number of foreign substances on the side surface of the cylindrical main body in the embodiment.
  • FIG. 15 is a cross-sectional view showing another example of the protective film.
  • FIG. 1 is a perspective view showing one embodiment of the roll body
  • FIG. 2 is an exploded view of the roll body of FIG.
  • the roll body 10 includes a main body portion 20 formed by winding the sheet 11 and a pair of protective films 30 having an adhesive layer.
  • the protective film 30 is attached to the side surface 21 by the adhesive layer 35 of the protective film 30 so as to cover the side surface 21 of the main body 20.
  • the roll body 10 has a hollow portion 22.
  • the hollow portion 22 may be formed of, for example, a cylindrical core material (not shown) around which the sheet 11 is wound, or may be formed by the wound sheet 11.
  • the pair of protective films 30 has a hole 32 in the center.
  • the pair of protective films 30 are attached to the side surface 21 of the main body 20 by the adhesive layer 35 in a state where the hole 32 and the hollow portion 22 are aligned along the center line CL so as to communicate with each other.
  • the protective film 30 may cover at least a part of the side surface 21, and may cover the entire side surface 21. Further, a part of the peripheral surface may be covered together with the side surface 21 of the main body portion 20.
  • the sheet 11 wound around the main body 20 is, for example, coated with a coating liquid on its surface and used for manufacturing various products or semi-finished products.
  • a coating liquid used in the manufacture of electronic components.
  • the coating liquid coated on the surface of the sheet 11 may be, for example, a slurry containing a solid content.
  • slurries include ceramic slurries and electrode slurries.
  • the protective film 30 has an adhesive layer 35, foreign matter adhering to the side surface 21 of the main body 20, such as cutting debris generated during cutting before or after winding the sheet 11, and generated during transportation and the like.
  • the foreign matter can be removed from the side surface 21 of the main body 20 by the adhesive force of the adhesive layer 35.
  • FIG. 3 is a perspective view showing the first embodiment of the package body
  • FIG. 4 is an exploded view of the package body of FIG.
  • the packing body 100 includes a pair of holding bodies 42 that hold the roll body 10 so as to sandwich the roll body 10, and a pair of fixing members 50 that fix the roll body 10 to the holding body 42.
  • the fixing member 50 has a cylindrical main body portion and a flange portion that protrudes outward in the radial direction at one end of the main body portion.
  • each member of the packing body 100 may be fixed by a string body 58 wound in a band shape from the fixing member 50 to the end portion of the holding body 42.
  • the packing body 100 has a holding body 42, a fixing member 50, and a string body 58 as packaging materials.
  • the holding body 42 has a flat plate shape, and holds the roll body 10 so that the side surface of the roll body 10 is not exposed to the outside. Therefore, the side surface of the roll body 10 is protected by the holding body 42. Thereby, for example, the roll body 10 can be protected from vibration during transportation.
  • the packaging body 100 may be further packaged by a packaging member such as corrugated cardboard.
  • the roll body 10 is put in a resin packaging bag made of polyethylene or the like and wrapped with the above-mentioned packaging material (holding body 42, fixing member 50 and string body 58) in the same manner as the packaging body 100. It may be used as a packing body.
  • a moisture-proof packing sheet coated with aluminum may be used to cover the roll body 10 for packing. The influence of humidity changes can be reduced by using a moisture-proof packing sheet with aluminum vapor deposition.
  • the roll body 10 includes the protective film 30 that covers the side surface 21, the side surface 21 and the holding body 42 do not come into direct contact with each other. For example, during transportation, the holding body 42 and the roll body 10 rub against each other due to vibration, and a load is applied to the side surface 21 of the main body portion 20. Since the roll body 10 includes a protective film 30 that covers the side surface 21 of the main body portion, wear of the side surface 21 of the main body portion 20 can be suppressed, and foreign matter generated due to rubbing can be reduced. Further, even if foreign matter enters between the holding body 42 and the roll body 10 during transportation and storage, it is possible to suppress the adhesion of foreign matter to the side surface 21 of the main body portion 20.
  • FIG. 5 is a diagram showing a second embodiment of the package body
  • FIG. 6 is an exploded view of the package body of FIG.
  • the packing body 200 is packed in a state where five roll bodies 10 are arranged in a dice pattern.
  • the five roll bodies 10 are packed so that the central axes CL1, CL2, CL3, CL4, and CL5 are arranged so as to be parallel to each other.
  • the packing body 200 has two flat plate-shaped holding bodies 44 and 46 in this order in the vertical downward direction.
  • the five roll bodies 10 are sandwiched between the holding body 44 and the holding body 46.
  • the holding bodies 44 and 46 have through holes at positions corresponding to the hollow portions of the roll body 10. Fixing members 50 are inserted into the hollow portions of the five through holes and the five roll bodies 10 from above and below, respectively. The holding body 44 and the five roll bodies 10 are fixed by the fixing member 50, and the holding body 46 and the five roll bodies 10 are fixed.
  • the packing body 200 may have a string body 58 wound in a band shape along the outer periphery thereof in order to fix each member to each other.
  • the packing body 200 has holding bodies 44 and 46, a fixing member 50, and a string body 58 as packaging materials.
  • the string body 58 is not shown and is omitted.
  • the side surfaces of the five roll bodies 10 are covered by either the holding bodies 44 or 46. Therefore, the side surface of each roll body 10 can be protected. Thereby, for example, each roll body 10 can be protected from vibration during transportation and the like.
  • the roll body 10 to which the protective film 30 is attached to both side surfaces is individually or collectively put in a resin packaging bag such as polyethylene, and then the above-mentioned packaging materials (retainers 44, 46, fixed) are fixed.
  • a packaging body similar to the packaging body 200 may be obtained by packaging with the member 50 and the string body 58).
  • the entire packaging body 200 may be housed in a resin packaging bag such as polyethylene.
  • a moisture-proof packing sheet with aluminum vapor deposition may be used instead of the packaging bag made of resin such as polyethylene.
  • the roll body 10 includes the protective film 30 that covers the side surface 21, the side surface 21 of the main body 20 and the holding bodies 44 and 46 forming the packaging material do not come into direct contact with each other. Therefore, it is possible to suppress wear caused by the side surface 21 and the holding bodies 44 and 46 rubbing against each other and generation of foreign matter due to the wear. Further, even if a foreign substance enters the inside of the packing body 200 during transportation and storage, it is possible to suppress the adhesion of the foreign substance to the side surface 21 of the main body 20. As a result, foreign matter adhering to the sheet 11 wound around the main body 20 can be reduced, and the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet 11 can be suppressed. Therefore, the yield of the product or semi-finished product manufactured by using the sheet 11 can be improved.
  • FIG. 7 is a diagram showing still another embodiment of the package
  • FIG. 8 is an exploded view of the package of FIG. 7.
  • the packing body 300 includes four roll bodies 10A arranged in a row along the central axis direction, and a packaging bag 70 for accommodating these.
  • the packaging bag 70 may be a bag made of a resin such as polyethylene, and may be a bag made of a moisture-proof packing sheet on which aluminum vapor deposition is applied. In FIG. 8, the packaging bag 70 is not shown and is omitted.
  • a protective film 33 is mounted between the adjacent main bodies 20.
  • the protective film 33 has a base film and an adhesive layer on both main surfaces thereof.
  • the protective film 33 is attached by this adhesive layer so as to cover the side surface of the main body 20.
  • the roll body 10A included in the packing body 300 shares at least one protective film 33 with the adjacent roll bodies 10A.
  • the two roll bodies 10A adjacent to each other share a protective film 33 between them.
  • a protective film 30 having an adhesive layer on one main surface is attached to the outer side surfaces of the main body 20 arranged at both ends so that the adhesive layer and the side surface face each other.
  • a protective film 30 or a protective film 33 is attached to each side surface of the four roll bodies 10A so as to cover each side surface of each main body portion 20. Thereby, each side surface of each main body portion 20 can be protected.
  • the roll bodies 10 to which the protective films 30 are attached to both side surfaces of the main body 20 are arranged in a line along the axial direction to form a packaging bag. It may be accommodated in 70.
  • a core material 56 is inserted through the four roll bodies 10A housed in the packaging bag 70. Both ends of the core member 56 are exposed from the packaging bag 70, and each of the both ends is fixed by a cap member 54 via a ring member 72. The cap member 54 is attached so that the pair of ring members 72 are urged in the opposite direction. As a result, the four roll bodies 10A are fixed between the pair of ring members 72.
  • the packaging body 300 has a packaging bag 70, a ring member 72, a core material 56, and a cap member 54 as packaging materials.
  • the roll body 10A includes the protective films 30 and 33 covering the side surfaces 21, the side surfaces 21 of the adjacent main body 20 do not come into direct contact with each other. In addition, it does not come into direct contact with the cap member 54 and external objects. Therefore, it is possible to sufficiently suppress wear due to rubbing between the side surfaces 21 and contact with an external object, and generation of foreign matter due to wear. Further, even if a foreign substance enters the inside of the packaging bag 70 during transportation and storage, it is possible to suppress the adhesion of the foreign substance to the side surface 21 of the main body portion 20. This makes it possible to reduce foreign matter when using the sheet 11 wound around the main body 20, and suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured using the sheet 11. .. Therefore, the yield of the product or semi-finished product manufactured by using the sheet 11 can be improved.
  • FIG. 9 is a cross-sectional view showing an embodiment of the protective film.
  • the protective film 31 has a ring shape having a hole 32 in the central portion, and includes a base film 34, an adhesive layer 35, and a separator 38 in this order. When the separator 38 is removed from the adhesive layer 35, it becomes a protective film 30. As shown in FIGS. 1 and 2, the protective film 30 is attached to the side surface 21 of the main body 20 so that the adhesive layer 35 and the side surface 21 of the main body 20 face each other.
  • the adhesive layer 35 preferably has sufficient adhesive strength from the viewpoint of protecting the side surface 21 of the main body 20 and removing foreign matter adhering to the side surface 21. On the other hand, since the protective film 30 is finally removed from the side surface 21 of the main body 20, the adhesive layer 35 does not remain on the side surface of the main body after being removed (that is, glue does not transfer). Is preferable.
  • the 180-degree peel strength of the adhesive layer 35 may be, for example, 3 to 35,000 mN / 25 mm (bonded to glass), and 5 to 5 It may be 000 mN / 25 mm (bonded to glass).
  • the 180-degree peel strength in the present disclosure is a value measured in accordance with JIS Z0237: 2009. If the adhesive strength of the adhesive layer 35 is too low, it tends to be difficult to sufficiently adhere to the side surface 21 of the main body portion 20. On the other hand, if the adhesive strength is too high, it tends to be difficult to peel off from the side surface 21.
  • the gel fraction in the adhesive layer 35 may be 85% by mass or more, or 90% by mass or more, from the viewpoint of sufficiently suppressing glue transfer while increasing the adhesive force.
  • the gel fraction in the present disclosure is a value measured by the method described in Examples.
  • the base film 34 is not particularly limited, and for example, a synthetic resin film or the like can be used.
  • the synthetic resin include polyester; polyolefins such as polyethylene and polypropylene; polylactic acid; acrylic resins such as polymethacrylate and polymethylmethacrylate; polyamides such as nylons 6 and 6; polyvinyl chloride; polyurethane; polystyrene; polycarbonate; polyphenylene sulfide.
  • a fluororesin such as polytetrafluoroethylene can be mentioned.
  • the synthetic resin preferably contains polyester, more preferably polyethylene terephthalate. Polyethylene terephthalate film is relatively inexpensive and has excellent mechanical properties.
  • the thickness of the base film 34 may be, for example, 10 to 300 ⁇ m, or 30 to 200 ⁇ m. By setting the thickness of the base film 34 to 10 ⁇ m or more, it is possible to sufficiently protect the side surface 21 of the main body 20 and prevent the protective film 30 from breaking when it is removed from the side surface 21. The cost can be reduced by reducing the thickness of the base film 34 to 300 ⁇ m or less.
  • the adhesive layer 35 is not particularly limited and contains, for example, a resin.
  • the resin include acrylic resin, methacrylic resin, urethane resin, cellulose resin, vinyl acetate resin, ethylene-vinyl acetate resin, epoxy resin, nylon-epoxy resin, vinyl chloride resin, and chloroprene.
  • the curing reaction system is not particularly limited, and may be, for example, a type that cures by reacting with an isocyanate-based material, or a type that cures by irradiating UV.
  • the adhesive layer 35 since the roll body may be exposed to a high temperature during transportation, the adhesive layer 35 may have excellent heat resistance. A coating liquid containing such a resin can be applied onto the base film 34 to form the adhesive layer 35.
  • the adhesive layer 35 may contain an additive substance such as an antistatic agent.
  • the additive substance include those containing a quaternary ammonium salt as a component, those containing a silicate component, and conductive polymers such as polypyrrole.
  • the additive substance is not limited to these.
  • the adhesive layer 35 contains an antistatic agent, it is possible to suppress the adhesion of foreign substances such as dust due to charging when the protective film is peeled off from the roll body.
  • the thickness of the adhesive layer 35 may be 1 to 100 ⁇ m or 3 to 80 ⁇ m from the viewpoint of sufficiently suppressing the adhesive transfer while sufficiently increasing the adhesive force.
  • the separator 38 may be, for example, a film made of polyethylene, or may be a film having a release layer on the surface of the polyethylene terephthalate film or the like. In the case of a film having a release layer, the film may be attached to the adhesive layer 35 via the release layer.
  • the protective film of the present disclosure is not limited to the one shown in FIG. FIG. 15 is a cross-sectional view showing another example of the protective film.
  • the protective film 31A has an adhesive layer 35 and a separator 38 in this order from the base film 34 side on each of the base film 34 and both main surfaces thereof. By removing the pair of separators 38 from such a protective film 31A, the protective film 33 shown in FIG. 8 can be obtained.
  • the adhesive layer may have a structure in which two or more layers having different compositions are laminated.
  • the protective films 31 and 31A do not have to have the separator 38.
  • an arbitrary layer may be provided between the adhesive layer 35 and the base film 34 and / or on the side opposite to the adhesive layer 35 side of the base film 34.
  • the protective film does not have to have holes, and its outer shape is not particularly limited. For example, one side surface 21 of the main body 20 may be covered with a plurality of protective films in a semicircular shape or a fan shape.
  • FIG. 10 is a diagram for explaining an example of how to use the main body 20.
  • a rotatable shaft body inserted into the hollow portion 22 of the roll-shaped main body 20
  • the tip of the sheet 11 wound around the main body 20 is pulled to pull out the sheet 11 from the main body 20.
  • Various products or semi-finished products can be manufactured by coating the surface of the drawn sheet 11 with a coating liquid.
  • the usage of the main body 20 is not limited to such an example.
  • FIG. 11 is a sectional view taken along line XI-XI of the sheet 11 shown in FIG.
  • the sheet 11 is a release film used for manufacturing electronic parts, for example, and has a base film 12 and a release layer 14.
  • the coating liquid is coated on the surface 14a of the sheet 11 on the release layer 14 side.
  • the sheet 11 may be, for example, a release film for manufacturing a green sheet used for manufacturing a multilayer ceramic capacitor.
  • the surface 14a of the sheet 11 is coated with a ceramic slurry or an electrode slurry as a coating liquid.
  • the base film 12 may be, for example, a synthetic resin film or the like.
  • the synthetic resin include polyester; polyolefins such as polyethylene and polypropylene; polylactic acid; acrylic resins such as polymethacrylate and polymethylmethacrylate; polyamides such as nylons 6 and 6; polyvinyl chloride; polyurethane; polystyrene; polycarbonate; polyphenylene sulfide.
  • a fluororesin such as polytetrafluoroethylene can be mentioned.
  • the synthetic resin preferably contains polyester, more preferably polyethylene terephthalate. Polyethylene terephthalate film is relatively inexpensive and has excellent mechanical properties and transparency.
  • the base film 12 may contain a filler.
  • the mechanical strength of the sheet 11 can be sufficiently increased.
  • the content of the filler in the base film 12 is not particularly limited, but it is preferably such that the transparency is not deteriorated.
  • the filler include calcium carbonate, calcium phosphate, titanium oxide, silica, fumed silica, kaolin, talc, alumina, organic particles and the like.
  • the thickness of the base film 12 may be, for example, 10 to 100 ⁇ m, or 20 to 50 ⁇ m. By setting the thickness of the base film 12 to 10 ⁇ m or more, physical characteristics such as dimensional stability of the sheet 11 can be enhanced. By setting the thickness of the base film 12 to 100 ⁇ m or less, the manufacturing cost per unit area of the sheet 11 can be further reduced.
  • the release layer 14 may be composed of, for example, a cured product of a composition containing a silicone-based resin having a reactive functional group and other polymerizable components.
  • the silicone-based resin may have a specific distribution along the depth direction of the release layer 14.
  • the structure of the sheet wound around the main body 20 is not limited to the above example, and for example, the release layer 14 may not be provided, and an arbitrary layer may be provided between the release layer 14 and the base film 12. You may be doing it. Further, an arbitrary layer may be provided on the side of the base film 12 opposite to the release layer 14.
  • the production method of this example includes a step of coating a coating liquid containing a composition containing a silicone-based resin having a reactive functional group and a solvent on a substrate (coating step), and the above-mentioned coating liquid in the coating liquid. It includes a step of reducing the solvent and providing a photosensitive layer (solvent reduction step), and a step of forming a release layer composed of a cured product of the composition by exposing the photosensitive layer (exposure step).
  • the coating step is a step of applying the coating liquid to the base film 12 to form a coating film containing the above composition.
  • a coating method for forming the coating film for example, a bar coating method, a Meyer bar coating method, a reverse coating method, a gravure coating method, a rod coating method, a die coating method, a spray coating method and the like can be used.
  • a solvent capable of dissolving the silicone-based resin having a reactive functional group and other components is used.
  • the solvent include toluene, xylene, methyl ethyl ketone (MEK), isopropyl alcohol (IPA), propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PEGMA) and the like.
  • MEK methyl ethyl ketone
  • IPA isopropyl alcohol
  • PGME propylene glycol monomethyl ether
  • PEGMA propylene glycol monomethyl ether acetate
  • the composition for forming the release layer 14 may contain a silicone-based resin having a reactive functional group, a (meth) acrylate having a reactive functional group, and an acrylic silicone graft polymer having a reactive functional group. ..
  • the reactive functional group may contain at least one functional group selected from the group consisting of vinyl groups and (meth) acryloyl groups.
  • (meth) acrylate means acrylate and methacrylate
  • (meth) acryloyl group” indicates an acryloyl group and a methacryloyl group.
  • the composition containing a silicone-based resin having a reactive functional group may contain, for example, a photopolymerization initiator.
  • a photopolymerization initiator a compound that generates radicals by irradiation with active light can be used.
  • the photopolymerization initiator include 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1-phenyl-propane-1-one, and 2-hydroxy-1- ⁇ 4- [4- [4- [4-].
  • the solvent reduction step is a step of reducing the content of the solvent and providing a photosensitive layer containing the composition.
  • the solvent reduction step is preferably a step of removing the solvent and providing a photosensitive layer made of the composition.
  • the solvent may be removed by heating and drying at a temperature of 50 to 150 ° C. for 10 seconds to 10 minutes.
  • the exposure step in the method for producing a release film is a step of irradiating the photosensitive layer with an active ray to react reactive functional groups and cure the composition to form a release layer.
  • the irradiation amount of the active light can be adjusted according to the thickness of the photosensitive layer and the like.
  • the sheet 11 can be manufactured by the above steps.
  • the sheet 11 manufactured in this manner is wound into a cylindrical shape so that the release layer 14 is on the inside to obtain the main body portion 20.
  • the roll body 10 can be obtained by attaching the protective films 30 to both side surfaces of the main body 20.
  • the method for manufacturing the roll body 10 and the sheet 11 is not limited to the above method.
  • the sheet 11 can be used for various purposes. For example, it can be used as a release film in a method for manufacturing electronic components.
  • the method for manufacturing an electronic component is selected from the group consisting of a protective film 30 removed from the roll body 10 and a ceramic powder and an electrode material on the surface 14a of the sheet 11 unwound from the main body 20 on the release layer 14 side.
  • FIG. 12 is a cross-sectional view showing an example of a parts sheet.
  • the ceramic component sheet 80 of FIG. 12 has a sheet 11 which is a release film, a ceramic green sheet 62 on the surface 14a on the release layer 14 side, and an electrode green sheet 64 on the ceramic green sheet 62.
  • a part of the coating process and the sheet forming process may be repeated as in the following example.
  • the surface 14a on the release layer 14 side of the sheet 11 is coated with a coating liquid (ceramic slurry) containing ceramic powder by, for example, a doctor blade device or the like.
  • a coating liquid ceramic slurry
  • the ceramic slurry contains, for example, a dielectric material (ceramic powder) and an organic vehicle.
  • the dielectric raw material include various compounds that become composite oxides or oxides by firing. Examples of various compounds include carbonates, nitrates, hydroxides, organometallic compounds and the like.
  • the ceramic slurry may further contain a dispersant, a plasticizer, a charge remover, a dielectric, a glass frit, an insulator and the like, if necessary.
  • the ceramic paste coated on the surface 14a of the sheet 11 is heated and dried in a commercially available drying device at a temperature of, for example, 50 to 100 ° C. for 1 to 20 minutes to form a ceramic green sheet 62. ..
  • the ceramic green sheet 62 shrinks 5 to 25% as compared to before drying.
  • the ceramic green sheet 62 examples include a dielectric green sheet for forming a multilayer ceramic capacitor.
  • the thickness of the ceramic green sheet 62 may be, for example, 0.03 to 5 ⁇ m or 0.1 to 1 ⁇ m.
  • the ceramic green sheet 62 may be peeled from the sheet 11 and fired to form a dielectric containing, for example, calcium titanate, strontium titanate or barium titanate. This may be used as an electronic component.
  • a coating step of coating the electrode slurry so as to have a predetermined pattern is performed on the surface 62a of the ceramic green sheet 62 obtained in the sheet forming step, for example, using a screen printing device. Then, the coated electrode paste is heated and dried in a commercially available drying device at a temperature of, for example, 50 to 100 ° C. for 1 to 20 minutes to perform a sheet forming step of forming the electrode green sheet 64. Thereby, the ceramic component sheet 80 having the ceramic green sheet 62 and the electrode green sheet 64 in this order can be obtained from the sheet 11 side on the sheet 11.
  • the electrode slurry is selected from the group consisting of, for example, conductive materials such as various conductive metals and alloys, and materials that become conductive materials after firing with various oxides, organometallic compounds, and resists. It contains one and an organic vehicle.
  • conductive materials such as various conductive metals and alloys, and materials that become conductive materials after firing with various oxides, organometallic compounds, and resists. It contains one and an organic vehicle.
  • the conductor material include nickel metals, nickel alloys, and mixtures thereof.
  • a binder resin dissolved in an organic solvent can be used as the organic vehicle contained in the ceramic slurry and the electrode slurry.
  • the binder resin include ethyl cellulose, acrylic resin, butyral resin, polyvinyl acetal, polyvinyl alcohol, polyolefin, polyurethane, polystyrene, and copolymers thereof.
  • organic solvent used in the organic vehicle examples include terpineol, alcohol, butyl carbitol, acetone, toluene, xylene, benzyl acetate and the like. One of these organic solvents may be used alone, or two or more of these organic solvents may be used in combination.
  • organic solvent examples include methanol, ethanol, propanol, butanol and the like.
  • the following manufacturing process is performed after manufacturing a plurality of ceramic component sheets by the above procedure. That is, a plurality of green sheets of ceramic component sheets are laminated to obtain a laminated body. A terminal electrode is formed on the sintered body obtained by firing this laminated body to obtain a laminated ceramic capacitor.
  • the sheet 11 is peeled off from the ceramic component sheet 80 to obtain a green sheet 60.
  • the green sheet 60 and the ceramic component sheet 80 are laminated so that the back surface 62b of the green sheet 60 and the electrode green sheet 64 of another ceramic component sheet 80 face each other. After that, the sheet 11 is peeled off from the laminated ceramic component sheet 80.
  • a laminated body can be obtained by laminating the green sheets 60 by repeating such a procedure.
  • the obtained laminate (green chips) is fired to obtain a sintered body.
  • the firing conditions are 1100 to 1300 ° C., and it is preferable to carry out the firing in an atmosphere such as a mixed gas of humidified nitrogen and hydrogen.
  • the partial pressure of oxygen in the atmosphere at the time of firing is preferably 10-2 Pa or less, more preferably 10-2 to 10-8 Pa.
  • the temperature is preferably 200 to 600 ° C.
  • a multilayer ceramic capacitor which is an electronic component, can be obtained by baking a terminal electrode paste on the side surface of the sintered body to form a terminal electrode.
  • the above-mentioned manufacturing method of the multilayer ceramic capacitor since the above-mentioned sheet 11 in which foreign substances are reduced is used, it is possible to sufficiently suppress the occurrence of pinholes and scratches of the obtained electronic component, that is, the multilayer ceramic capacitor. .. Therefore, a monolithic ceramic capacitor can be manufactured with a high yield.
  • FIG. 13 is a cross-sectional view of the multilayer ceramic capacitor.
  • the multilayer ceramic capacitor 90 includes an interior portion 92 and a pair of exterior portions 93 that sandwich the interior portion 92 in the stacking direction.
  • the monolithic ceramic capacitor 90 has a terminal electrode 95 on the side surface.
  • the interior portion 92 has a plurality of (13 layers in this example) ceramic layers 96 and a plurality of (12 layers in this example) internal electrode layers 94.
  • the ceramic layer 96 and the internal electrode layer 94 are alternately laminated.
  • the internal electrode layer 94 is electrically connected to the terminal electrode 95.
  • the exterior portion 93 is formed of a ceramic layer. This ceramic layer may be formed by using, for example, a ceramic green sheet 62.
  • the electronic component is not limited to the multilayer ceramic capacitor, and may be an electrode of a lithium ion battery or the like.
  • Example 1 ⁇ Making a roll-shaped main body> A commercially available curable silicone containing polydimethylsiloxane and dimethylhydrogensilane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KS-847H, solid content concentration: 30% by mass) was prepared. 300 g of this curable silicone, 3.0 g of a platinum catalyst (trade name: CAT-PL-50T manufactured by Shinetsu Chemical Industry Co., Ltd.), and 2700 g of a solution (a solution in which methyl ethyl ketone and toluene are mixed at a mass ratio of 1: 1). To prepare a silicone resin dispersion having a solid content concentration of 3.0% by mass.
  • the silicone resin dispersion was applied to a biaxially stretched polyethylene terephthalate film (PET film, thickness: 31 ⁇ m) using a bar coater so that the coating thickness after drying was 0.1 ⁇ m.
  • PET film biaxially stretched polyethylene terephthalate film
  • This was heated at 110 ° C. for 40 seconds to perform a drying and curing reaction to form a release layer on the PET film.
  • a release film sheet having a PET film and a release layer on the PET film was obtained.
  • This release film (width: 200 mm, length: 6,000 m) was wound around a Bakelite winding core (inner diameter: 3 inches, outer diameter 88 mm, width 202 mm) with the release layer on the inside.
  • a roll-shaped main body was obtained. Three such roll-shaped main bodies were produced. The main body was manufactured in a clean room.
  • the measurement was performed by drawing a virtual line extending radially so that the side surface 21 is divided into a fan shape having a central angle of 45 ° as shown by a black circle in FIG. 14, and a total of 16 points on the virtual line were selected. Measurements were performed at 16 points on each of the side surfaces 21 of the three main bodies (96 points in total), and the average value per point (per field of view) was obtained. The evaluation results are as shown in Table 1.
  • This pressure-sensitive adhesive solution is coated on a biaxially stretched PET film (thickness: 125 ⁇ m) with a bar coater so that the thickness of the pressure-sensitive adhesive layer after drying is 10 ⁇ m, and heated at 100 ° C. for 2 minutes to dry. An adhesive layer was formed.
  • the separator the release film used for producing the main body was used, and the release layer of the release film and the adhesive layer described above were bonded to obtain a protective film.
  • This protective film was wound into a roll with the separator inside to prepare a protective film roll. This protective film roll was stored at room temperature (23 ° C.) for 5 days for aging.
  • a protective film was cut into a size of 25 mm ⁇ 50 mm to prepare a measurement sample.
  • the separator was removed from the measurement sample and weighed with a precision balance (mass A).
  • the weighed sample was placed in a 100 ml glass bottle. Then, 50 ml of toluene was put into this glass bottle, and the mixture was allowed to stand at 23 ° C. for 24 hours.
  • the non-woven fabric used for filtration was weighed with a precision balance (mass B).
  • the contents of the glass bottle (including the protective film from which the separator was removed) were filtered using a weighed non-woven fabric.
  • the non-woven fabric used was dried in a dryer at 100 ° C. for 2 hours to completely evaporate toluene, and then the non-woven fabric was left in an environment of 23 ° C. for 1 hour. Then, the non-woven fabric was weighed with a precision balance (mass C).
  • the mass of the PET film of the same size (25 mm ⁇ 50 mm) as the measurement sample used for producing the protective film was weighed with a precision balance (mass D).
  • the gel fraction of the adhesive layer was calculated by the following formula.
  • a protective film was attached to a glass plate having a thickness of 3 mm using a hand roller so that air bubbles did not enter the interface between the adhesive layer and the glass plate.
  • the protective film was pulled in the 180 degree direction and peeled off from the glass plate at a speed of 300 mm / min, and the adhesive strength of the protective film was measured.
  • the results are as shown in Table 1.
  • the protective film was unwound from the protective film roll and punched into a donut shape so as to match the shape of the side surface of the roll-shaped main body.
  • a donut-shaped punched protective film was attached to the side surface of the roll-shaped main body to obtain a rolled body.
  • This roll body was placed in a polyethylene packaging bag to which dust and foreign matter did not adhere, and then wrapped with a packaging material to obtain a packaging body having a form as shown in FIG. A total of three packages were prepared by the same procedure.
  • Example 2 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure.
  • An acrylic pressure-sensitive adhesive (manufactured by DIC Corporation, trade name: CT-3020, non-volatile content: 25 to 35% by mass, viscosity: 1,000 to 2,000 mPa ⁇ S) was dissolved in methyl ethyl ketone.
  • Isocyanate-based curing agent manufactured by DIC Co., Ltd., trade name: D-100A, non-volatile content: 100% by mass, NCO: 22.5 to 25% by mass, viscosity: 1,000 to 2,000 mPa
  • Example 3 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. The same procedure as in Example 2 except that the pressure-sensitive adhesive solution was prepared by changing the amount of the isocyanate-based curing agent added to the solution from 3.0% by mass to 2.0% by mass when producing the protective film. A protective film was prepared in. The prepared protective film was wound into a roll in the same manner as in Example 1 to prepare a protective film roll. A roll body and a package body were produced by the same procedure as in Example 1 except that the number of days of aging of the protective film roll was changed from 5 days to 2 days. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 4 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. The same procedure as in Example 3 except that the pressure-sensitive adhesive solution was prepared by changing the amount of the isocyanate-based curing agent added to the solution from 2.0% by mass to 1.0% by mass when producing the protective film. A protective film was prepared in. The prepared protective film was wound into a roll in the same procedure as in Example 1 to prepare a protective film roll. A roll body and a package body were produced by the same procedure as in Example 1 except that the number of days of aging of the protective film roll was changed from 5 days to 1 day. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 5 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure.
  • An acrylic pressure-sensitive adhesive (manufactured by DIC Corporation, trade name: CT-6030, non-volatile content: 45 to 47% by mass, viscosity: 2,500 to 4,500 mPa ⁇ S) was dissolved in methyl ethyl ketone. 1.0% by mass of an isocyanate-based curing agent (manufactured by DIC Co., Ltd., trade name: DN, non-volatile content: 73 to 77% by mass, NCO: 11.5-12.5% by mass) is added to this solution.
  • an isocyanate-based curing agent manufactured by DIC Co., Ltd., trade name: DN, non-volatile content: 73 to 77% by mass, NCO: 11.5-12.5% by mass
  • a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass was prepared.
  • a protective film was prepared in the same procedure as in ⁇ Preparation of Protective Film> of Example 1 except that the thickness of the adhesive layer after drying was 25 ⁇ m and this adhesive solution was used, and the same as in Example 1.
  • a roll body and a package body were prepared by the procedure. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 6 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure.
  • a silicone-based adhesive manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3704, non-volatile content: 60% by mass, viscosity: 100 Pa ⁇ s
  • a platinum catalyst manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass.
  • This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 ⁇ m) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer.
  • a protective film was prepared in the same procedure as in ⁇ Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 7 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. First, the following two types of silicone-based adhesives were prepared. Silicone adhesive 1 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3704, non-volatile content: 60% by mass, viscosity: 100 Pa ⁇ s) Silicone adhesive 2 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3700, non-volatile content: 60% by mass, viscosity: 30 Pa ⁇ s)
  • Silicone-based pressure-sensitive adhesive 1 and silicone-based pressure-sensitive adhesive 2 were dissolved in toluene at a mass ratio of 8: 2.
  • a platinum catalyst manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T
  • This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 ⁇ m) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer.
  • a protective film was prepared in the same procedure as in ⁇ Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 8 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure.
  • the silicone-based pressure-sensitive adhesive 1 and the silicone-based pressure-sensitive adhesive 2 used in Example 7 were dissolved in toluene at a mass ratio of 3: 7.
  • a platinum catalyst manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass.
  • This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 ⁇ m) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer.
  • a protective film was prepared in the same procedure as in ⁇ Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 9 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure.
  • a silicone-based pressure-sensitive adhesive manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3700, non-volatile content: 60% by mass, viscosity: 100 Pa ⁇ s
  • KR-3700 non-volatile content: 60% by mass
  • viscosity 100 Pa ⁇ s
  • a platinum catalyst (manufactured by Shin-Etsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T) was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass.
  • This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 ⁇ m) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer.
  • a protective film was prepared in the same procedure as in ⁇ Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Comparative Example 1 The main body was manufactured by the same procedure as in ⁇ Preparation of roll-shaped main body> of Example 1. Put the main body in a polyethylene wrapping bag without attaching a protective film to this main body, and donut-shaped cushion mats with the same size as the sides on both sides of the main body (Sakai Chemical Co., Ltd .: Minafoam (product) Name, polyethylene foam sheet, thickness: 3 mm)) was brought into contact with each other via a packaging bag. In this way, the package of Comparative Example 1 was produced. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
  • Example 4 the adhesive layer partially fell off from the protective film during the vibration test and remained on the side surface of the main body, so that the number of foreign substances increased as compared with that before the vibration test. However, the rate of increase was smaller than that of Comparative Example 1.
  • Example 5 since the adhesive strength was increased, the protective film tended to be more difficult to peel off from the side surface of the main body than in other examples. On the other hand, the number of foreign substances in Example 5 was not significantly different from that in Example 1.
  • roll bodies, packing bodies and protective films capable of improving the yield of products or semi-finished products manufactured using sheets are provided. Further, the present disclosure provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention provides a rolled body 10 which is capable of improving the yield of a product or a half-finished product, said product being produced with use of a sheet. The rolled body 10 is provided with: a main body part 20 that is obtained by rolling a sheet into a cylinder; and a protective film 30 that has an adhesive layer. The protective film 30 is bonded to the lateral surface of the main body part 20 by means of the adhesive layer so as to cover the lateral surface. The sheet has a surface that is coated with a coating liquid.

Description

ロール体、梱包体、保護フィルム、及び電子部品の製造方法Manufacturing method of roll body, packing body, protective film, and electronic parts
　本開示は、ロール体、梱包体、保護フィルム、及び電子部品の製造方法に関する。 This disclosure relates to a method for manufacturing a roll body, a packing body, a protective film, and an electronic component.
　電子部品等の製造プロセスにおいては、セラミック又は金属等を含むスラリーを用いてグリーンシートを作製する。このようなグリーンシートは、フィルム状のシートにスラリーをコーティングする工程を経て作製されるのが通常である。このシートは、離型フィルム又は剥離フィルム等と称されることもある。このようなシートは、利便性向上のため、ロール状に巻かれた状態で搬送されてユーザーに納品されることが多い。 In the manufacturing process of electronic parts, etc., a green sheet is produced using a slurry containing ceramic or metal. Such a green sheet is usually produced through a step of coating a film-like sheet with a slurry. This sheet may also be referred to as a release film, a release film, or the like. In order to improve convenience, such sheets are often transported in a rolled state and delivered to the user.
　このようなシートに異物が含まれると、シートを使用して製造される製品又は半製品の歩留まりが低下する。その理由は、異物が、作製されるグリーンシートにおけるピンホール等の発生原因となるためである。そこで、特許文献１では、離型フィルムと称されるシートを巻き取る際に、巻取りロールの耐電の絶対値を所定値以下にすることが提案されている。 If a foreign substance is contained in such a sheet, the yield of a product or a semi-finished product manufactured using the sheet decreases. The reason is that foreign matter causes pinholes and the like in the produced green sheet. Therefore, Patent Document 1 proposes to set the absolute value of the electric resistance of the winding roll to a predetermined value or less when winding a sheet called a release film.
特開２００６－１８１９９３号公報Japanese Unexamined Patent Publication No. 2006-181993
　しかしながら、特許文献１のようにシートを巻き取る際の製造条件を調節して巻取り時の異物の付着を減らしても、シートに付着する異物が十分に低減されていない場合がある。このため、シートに付着する異物を十分に低減して、シートを使用して製造される製品又は半製品の歩留まりを向上することが可能な技術を確立することが求められる。 However, even if the manufacturing conditions for winding the sheet are adjusted to reduce the adhesion of foreign matter during winding as in Patent Document 1, the foreign matter adhering to the sheet may not be sufficiently reduced. Therefore, it is required to establish a technique capable of sufficiently reducing foreign substances adhering to the sheet and improving the yield of products or semi-finished products manufactured using the sheet.
　そこで、本開示は、シートを使用して製造される製品又は半製品の歩留まりを向上することが可能なロール体、梱包体及び保護フィルムを提供する。また、本開示は、高い歩留まりで電子部品を製造することが可能な電子部品の製造方法を提供する。 Therefore, the present disclosure provides a roll body, a packing body, and a protective film capable of improving the yield of a product or a semi-finished product manufactured using a sheet. The present disclosure also provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.
　本開示の一側面に係るロール体は、シートが円筒状に巻かれている本体部と、粘着層を有する保護フィルムと、を備え、保護フィルムが、本体部の側面を覆うように粘着層によって当該側面に貼り付けられている。 The roll body according to one aspect of the present disclosure includes a main body portion in which a sheet is wound in a cylindrical shape and a protective film having an adhesive layer, and the protective film is provided by an adhesive layer so as to cover the side surface of the main body portion. It is attached to the side surface.
　このようなロール体は、本体部の側面を覆うように保護フィルムが貼り付けられていることから、搬送時等における振動及び衝撃に伴う擦れ及び摩耗等による異物の発生を抑制できる。また、保護フィルムが粘着層によって本体部の側面に貼り付けられていることから、シートの切断によって発生する切りカス等を粘着力によって本体部の側面から除去することができる。また、埃及び塵等、外部から本体部の側面に異物が付着することも抑制できる。これらの作用によって、シートに付着する異物が十分に低減され、シートを使用して製造される製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。これによって、製品又は半製品の歩留まりを向上することができる。 Since a protective film is attached to such a roll body so as to cover the side surface of the main body, it is possible to suppress the generation of foreign matter due to rubbing and wear due to vibration and impact during transportation and the like. Further, since the protective film is attached to the side surface of the main body by the adhesive layer, the cutting residue or the like generated by cutting the sheet can be removed from the side surface of the main body by the adhesive force. In addition, it is possible to prevent foreign matter such as dust and dirt from adhering to the side surface of the main body from the outside. By these actions, the foreign matter adhering to the sheet is sufficiently reduced, and the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet can be suppressed. Thereby, the yield of the product or the semi-finished product can be improved.
　本開示の一側面に係るロール体は、塗布液がコーティングされるシートが円筒状に巻かれている本体部と、粘着層を有する保護フィルムと、を備え、保護フィルムが、本体部の側面を覆うように粘着層によって当該側面に貼り付けられている。このようなロール体によれば、シートにコーティングされる塗布液を成型して得られる製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。これによって、製品又は半製品の歩留まりを向上することができる。 The roll body according to one aspect of the present disclosure includes a main body portion in which a sheet coated with a coating liquid is wound in a cylindrical shape, and a protective film having an adhesive layer, and the protective film covers the side surface of the main body portion. It is attached to the side surface by an adhesive layer so as to cover it. According to such a roll body, it is possible to suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product obtained by molding the coating liquid coated on the sheet. Thereby, the yield of the product or the semi-finished product can be improved.
　本開示における塗布液とは、液体に固体、液体又は気体が溶解又は分散した流体をいう。例えば、塗布液は、液体中に粒子が分散したスラリーであってよい。液体としては、水、有機溶剤、又はこれらの混合物であってよい。粒子は、任意のものであってよく、例えば、無機粒子であってもよい。 The coating liquid in the present disclosure means a fluid in which a solid, a liquid or a gas is dissolved or dispersed in a liquid. For example, the coating liquid may be a slurry in which particles are dispersed in the liquid. The liquid may be water, an organic solvent, or a mixture thereof. The particles may be arbitrary, for example, inorganic particles.
　上記シートは、基材と塗布液がコーティングされる剥離層とを備えてよい。これによって、塗布液を成型して部品シートにした後、部品シートからシートを円滑に剥離することができる。 The sheet may include a base material and a release layer on which the coating liquid is coated. As a result, after the coating liquid is molded into a component sheet, the sheet can be smoothly peeled off from the component sheet.
　上記保護フィルムの粘着層におけるゲル分率は８５質量％以上であってよい。ゲル分率が大きい粘着層を有する保護フィルムであれば、本体部の側面に十分に貼着する。また、保護フィルムを本体部の側面から剥がしたときに、粘着層の一部又は全部が本体部の側面に残存することを抑制できる。 The gel fraction in the adhesive layer of the protective film may be 85% by mass or more. If the protective film has an adhesive layer having a large gel fraction, it is sufficiently attached to the side surface of the main body. Further, when the protective film is peeled off from the side surface of the main body, it is possible to prevent a part or all of the adhesive layer from remaining on the side surface of the main body.
　本開示の一側面に係る梱包体は、上述のロール体とロール体を包装する包装材とを備える。本体部は、保管又は搬送の際に包装される場合があるが、本体部の側面と包装体とが互いに擦れ合って異物発生の要因となり得る。上記ロール体は、本体部の側面を覆うように保護フィルムが貼り付けられていることから、包装体と本体部の側面とが擦れ合うことによる異物の発生を抑制できる。このため、包装体で包装しても、包装体から取り出された本体部より繰り出されるシートに付着する異物を十分に低減することができる。 The packaging body according to one aspect of the present disclosure includes the above-mentioned roll body and a packaging material for packaging the roll body. The main body may be packaged during storage or transportation, but the side surface of the main body and the package may rub against each other and cause foreign matter to be generated. Since the protective film is attached to the roll body so as to cover the side surface of the main body, it is possible to suppress the generation of foreign matter due to the rubbing between the package and the side surface of the main body. Therefore, even if the product is wrapped in a package, foreign matter adhering to the sheet drawn out from the main body taken out from the package can be sufficiently reduced.
　本開示の一側面に係る電子部品の製造方法は、上述のロール体から保護フィルムを取り外し、本体部から繰り出されたシートに塗布液をコーティングする工程と、塗布液を乾燥させ、部品シートを得る工程と、部品シートを用いて電子部品を製造する工程と、を有する。上述のロール体は、シートに付着する異物を十分に低減することが可能であることから、異物に起因するピンホール及び傷等の発生を抑制することができる。このため、当該シートを使用して製造される電子部品の歩留まりを向上することができる。 The method for manufacturing an electronic component according to one aspect of the present disclosure includes a step of removing a protective film from the roll body described above and coating a sheet drawn out from the main body with a coating liquid, and drying the coating liquid to obtain a component sheet. It has a process and a process of manufacturing an electronic component using a component sheet. Since the above-mentioned roll body can sufficiently reduce the foreign matter adhering to the sheet, it is possible to suppress the occurrence of pinholes, scratches and the like caused by the foreign matter. Therefore, the yield of electronic components manufactured by using the sheet can be improved.
　本開示の一側面に係る保護フィルムは、塗布液がコーティングされるシートが円筒状に巻かれているロール状の本体部の保護フィルムである。この保護フィルムは、基材フィルムと粘着層とを備え、粘着層によって、本体部の側面に貼り付けられる。このような保護フィルムは、本体部から繰り出されたシートに付着する異物を低減して、シートを使用して製造される製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。これによって、製品又は半製品の歩留まりを向上することができる。 The protective film according to one aspect of the present disclosure is a protective film for a roll-shaped main body in which a sheet coated with a coating liquid is wound in a cylindrical shape. This protective film includes a base film and an adhesive layer, and is attached to the side surface of the main body by the adhesive layer. Such a protective film can reduce foreign substances adhering to the sheet drawn out from the main body and suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet. Thereby, the yield of the product or the semi-finished product can be improved.
　上記保護フィルムの粘着層におけるゲル分率は８５質量％以上であってよい。ゲル分率が大きい粘着層を有する保護フィルムであれば、本体部の側面に十分に貼着する。また、保護フィルムを本体部の側面から剥がす際に粘着層の一部又は全部が本体部の側面に残存することを抑制できる。 The gel fraction in the adhesive layer of the protective film may be 85% by mass or more. If the protective film has an adhesive layer having a large gel fraction, it is sufficiently attached to the side surface of the main body. Further, when the protective film is peeled off from the side surface of the main body, it is possible to prevent a part or all of the adhesive layer from remaining on the side surface of the main body.
　本開示によれば、シートを使用して製造される製品又は半製品の歩留まりを向上することが可能なロール体、梱包体及び保護フィルムが提供される。また、本開示によれば、高い歩留まりで電子部品を製造することが可能な電子部品の製造方法が提供される。 According to the present disclosure, roll bodies, packing bodies and protective films capable of improving the yield of products or semi-finished products manufactured using sheets are provided. Further, the present disclosure provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.
図１は、ロール体の一実施形態を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of a roll body. 図２は、図１のロール体の分解図である。FIG. 2 is an exploded view of the roll body of FIG. 図３は、梱包体の第１実施形態を示す斜視図である。FIG. 3 is a perspective view showing a first embodiment of the package. 図４は、図３の梱包体の分解図である。FIG. 4 is an exploded view of the package of FIG. 図５は、梱包体の第２実施形態を示す斜視図である。FIG. 5 is a perspective view showing a second embodiment of the package. 図６は、図５の梱包体の分解図である。FIG. 6 is an exploded view of the package of FIG. 図７は、梱包体の第３実施形態を示す斜視図である。FIG. 7 is a perspective view showing a third embodiment of the package. 図８は、図７の梱包体の分解図である。FIG. 8 is an exploded view of the package of FIG. 7. 図９は、保護フィルムの一実施形態を示す断面図である。FIG. 9 is a cross-sectional view showing an embodiment of the protective film. 図１０は、本体部の使用方法の一例を説明するための図である。FIG. 10 is a diagram for explaining an example of how to use the main body. 図１１は、図１０に示すシート１１のＸＩ－ＸＩ線断面図である。FIG. 11 is a sectional view taken along line XI-XI of the sheet 11 shown in FIG. 図１２は、部品シートの一例を示す断面図である。FIG. 12 is a cross-sectional view showing an example of a component sheet. 図１３は、電子部品の一例を示す断面図である。FIG. 13 is a cross-sectional view showing an example of an electronic component. 図１４は、実施例で、円筒状の本体部の側面における異物個数の評価箇所を示す図である。FIG. 14 is a diagram showing the evaluation points of the number of foreign substances on the side surface of the cylindrical main body in the embodiment. 図１５は、保護フィルムの別の例を示す断面図である。FIG. 15 is a cross-sectional view showing another example of the protective film.
　以下、場合により図面を参照して、本開示の一実施形態について説明する。ただし、以下の実施形態は、本開示を説明するための例示であり、本開示を以下の内容に限定する趣旨ではない。説明において、同一要素又は同一機能を有する要素には同一符号を用い、場合により重複する説明は省略する。また、上下左右等の位置関係は、特に断らない限り、図面に示す位置関係に基づくものとする。更に、各要素の寸法比率は図示の比率に限られるものではない。 Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings in some cases. However, the following embodiments are examples for explaining the present disclosure, and are not intended to limit the present disclosure to the following contents. In the description, the same reference numerals are used for the same elements or elements having the same function, and duplicate description may be omitted in some cases. Further, unless otherwise specified, the positional relationship such as up, down, left, and right shall be based on the positional relationship shown in the drawings. Further, the dimensional ratio of each element is not limited to the ratio shown in the figure.
　図１は、ロール体の一実施形態を示す斜視図であり、図２は図１のロール体の分解図である。ロール体１０は、シート１１が巻かれて構成される本体部２０と、粘着層を有する一対の保護フィルム３０とを備える。保護フィルム３０は、本体部２０の側面２１を覆うように、保護フィルム３０の粘着層３５によって側面２１に貼り付けられている。ロール体１０は中空部２２を有する。中空部２２は、例えば、シート１１が巻き付けられている、図示しない円筒状の芯材によって形成されていてもよいし、巻かれているシート１１によって形成されていてもよい。 FIG. 1 is a perspective view showing one embodiment of the roll body, and FIG. 2 is an exploded view of the roll body of FIG. The roll body 10 includes a main body portion 20 formed by winding the sheet 11 and a pair of protective films 30 having an adhesive layer. The protective film 30 is attached to the side surface 21 by the adhesive layer 35 of the protective film 30 so as to cover the side surface 21 of the main body 20. The roll body 10 has a hollow portion 22. The hollow portion 22 may be formed of, for example, a cylindrical core material (not shown) around which the sheet 11 is wound, or may be formed by the wound sheet 11.
　一対の保護フィルム３０は中央部に穴３２を備えている。一対の保護フィルム３０は、中心線ＣＬに沿って穴３２と中空部２２とが連通するように位置合わせされた状態で粘着層３５によって本体部２０の側面２１に貼り付けられている。保護フィルム３０は側面２１の少なくとも一部を覆っていればよく、側面２１の全体を覆っていてもよい。また、本体部２０の側面２１とともに周面の一部を覆っていてもよい。 The pair of protective films 30 has a hole 32 in the center. The pair of protective films 30 are attached to the side surface 21 of the main body 20 by the adhesive layer 35 in a state where the hole 32 and the hollow portion 22 are aligned along the center line CL so as to communicate with each other. The protective film 30 may cover at least a part of the side surface 21, and may cover the entire side surface 21. Further, a part of the peripheral surface may be covered together with the side surface 21 of the main body portion 20.
　本体部２０に巻き付けられているシート１１は、例えば、その表面に塗布液がコーティングされ、各種製品又は半製品の製造に用いられる。例えば、電子部品の製造に用いられる離型フィルムであってよい。また、リチウムイオン電池等の製造で使用されるアルミニウム箔又は銅箔ロール、ＩＴＯフィルム等の透明導電性フィルム等の製造に用いられるＰＥＴフィルム、ポリカーボネートフィルム、及びＣＯＰ（シクロオレフィンポリマー）フィルムであってもよい。 The sheet 11 wound around the main body 20 is, for example, coated with a coating liquid on its surface and used for manufacturing various products or semi-finished products. For example, it may be a release film used in the manufacture of electronic components. Further, a PET film, a polycarbonate film, and a COP (cycloolefin polymer) film used in the production of aluminum foil or copper foil rolls used in the production of lithium ion batteries and the like, transparent conductive films such as ITO films, and the like. May be good.
　シート１１の表面にコーティングされる塗布液は、例えば、固形分を含むスラリーであってよい。そのようなスラリーとしては、例えば、セラミックスラリー及び電極スラリー等が挙げられる。 The coating liquid coated on the surface of the sheet 11 may be, for example, a slurry containing a solid content. Examples of such slurries include ceramic slurries and electrode slurries.
　保護フィルム３０は粘着層３５を有することから、シート１１を巻き取る前又は巻取り後の切断時に発生した切りカス等、本体部２０の側面２１に付着していた異物、及び搬送時等に発生した異物を粘着層３５の粘着力によって本体部２０の側面２１から除去することができる。 Since the protective film 30 has an adhesive layer 35, foreign matter adhering to the side surface 21 of the main body 20, such as cutting debris generated during cutting before or after winding the sheet 11, and generated during transportation and the like. The foreign matter can be removed from the side surface 21 of the main body 20 by the adhesive force of the adhesive layer 35.
　図３は、梱包体の第１実施形態を示す斜視図であり、図４は図３の梱包体の分解図である。梱包体１００は、ロール体１０を挟むようにしてロール体１０を保持する一対の保持体４２とロール体１０を保持体４２とを固定する一対の固定部材５０とを備える。固定部材５０は円筒状の本体部と、本体部の一端において径方向外方に突出する鍔部を有する。図３に示すように、梱包体１００は、固定部材５０から保持体４２の端部に亘って帯状に巻き回された紐体５８で各部材が固定されていてもよい。梱包体１００は、包装材として、保持体４２、固定部材５０及び紐体５８を有する。なお、図４では紐体５８は図示されずに省略されている。保持体４２は平板状であり、ロール体１０の側面が外部に露出しないようにロール体１０を保持している。このため、ロール体１０の側面が保持体４２で保護される。これによって、例えば搬送時における振動等からロール体１０を保護することができる。なお、段ボール等の包装部材によって、梱包体１００をさらに包装してもよい。 FIG. 3 is a perspective view showing the first embodiment of the package body, and FIG. 4 is an exploded view of the package body of FIG. The packing body 100 includes a pair of holding bodies 42 that hold the roll body 10 so as to sandwich the roll body 10, and a pair of fixing members 50 that fix the roll body 10 to the holding body 42. The fixing member 50 has a cylindrical main body portion and a flange portion that protrudes outward in the radial direction at one end of the main body portion. As shown in FIG. 3, each member of the packing body 100 may be fixed by a string body 58 wound in a band shape from the fixing member 50 to the end portion of the holding body 42. The packing body 100 has a holding body 42, a fixing member 50, and a string body 58 as packaging materials. In FIG. 4, the string body 58 is not shown and is omitted. The holding body 42 has a flat plate shape, and holds the roll body 10 so that the side surface of the roll body 10 is not exposed to the outside. Therefore, the side surface of the roll body 10 is protected by the holding body 42. Thereby, for example, the roll body 10 can be protected from vibration during transportation. The packaging body 100 may be further packaged by a packaging member such as corrugated cardboard.
　変形例では、ポリエチレン等の樹脂製の包袋にロール体１０を入れたものを、上述の包装材（保持体４２、固定部材５０及び紐体５８）で包装して、梱包体１００と同様の梱包体としてよい。なお、ポリエチレン等の樹脂製の包袋の代わりにアルミニウム蒸着が施された防湿性の梱包用シートを使用してロール体１０を覆って梱包してもよい。アルミニウム蒸着が施された防湿性の梱包用シートを使用することで湿度変化による影響を低減することができる。 In the modified example, the roll body 10 is put in a resin packaging bag made of polyethylene or the like and wrapped with the above-mentioned packaging material (holding body 42, fixing member 50 and string body 58) in the same manner as the packaging body 100. It may be used as a packing body. Instead of the packaging bag made of resin such as polyethylene, a moisture-proof packing sheet coated with aluminum may be used to cover the roll body 10 for packing. The influence of humidity changes can be reduced by using a moisture-proof packing sheet with aluminum vapor deposition.
　ロール体１０は側面２１を覆う保護フィルム３０を備えることから、側面２１と保持体４２とが直接接触しない。例えば、搬送時には、振動によって、保持体４２とロール体１０とが擦れ合って本体部２０の側面２１に負荷がかかる。ロール体１０は本体部の側面２１を覆う保護フィルム３０を備えていることから、本体部２０の側面２１の摩耗が抑制され、擦れ合いに起因して発生する異物を低減することができる。また、搬送及び保管等の際に、保持体４２とロール体１０との間に異物が侵入したとしても、本体部２０の側面２１への異物の付着も抑制できる。これによって、シート１１に付着する異物が低減され、シート１１を使用して製造される製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。これによって、シート１１を用いて製造される製品又は半製品の歩留まりを向上することができる。 Since the roll body 10 includes the protective film 30 that covers the side surface 21, the side surface 21 and the holding body 42 do not come into direct contact with each other. For example, during transportation, the holding body 42 and the roll body 10 rub against each other due to vibration, and a load is applied to the side surface 21 of the main body portion 20. Since the roll body 10 includes a protective film 30 that covers the side surface 21 of the main body portion, wear of the side surface 21 of the main body portion 20 can be suppressed, and foreign matter generated due to rubbing can be reduced. Further, even if foreign matter enters between the holding body 42 and the roll body 10 during transportation and storage, it is possible to suppress the adhesion of foreign matter to the side surface 21 of the main body portion 20. As a result, foreign matter adhering to the sheet 11 is reduced, and the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured using the sheet 11 can be suppressed. As a result, the yield of the product or semi-finished product manufactured by using the sheet 11 can be improved.
　図５は、梱包体の第２実施形態を示す図であり、図６は図５の梱包体の分解図である。梱包体２００は、５個のロール体１０がサイコロの目状に並んだ状態で梱包されている。５個のロール体１０は、中心軸線ＣＬ１，ＣＬ２，ＣＬ３，ＣＬ４，ＣＬ５が互いに平行になるように並んだ状態で梱包されている。梱包体２００は、鉛直下方向に向かって、平板状の２枚の保持体４４，４６をこの順に有する。５個のロール体１０は、保持体４４及び保持体４６によって挟まれている。 FIG. 5 is a diagram showing a second embodiment of the package body, and FIG. 6 is an exploded view of the package body of FIG. The packing body 200 is packed in a state where five roll bodies 10 are arranged in a dice pattern. The five roll bodies 10 are packed so that the central axes CL1, CL2, CL3, CL4, and CL5 are arranged so as to be parallel to each other. The packing body 200 has two flat plate-shaped holding bodies 44 and 46 in this order in the vertical downward direction. The five roll bodies 10 are sandwiched between the holding body 44 and the holding body 46.
　保持体４４，４６は、ロール体１０の中空部に対応する位置に貫通穴を有する。５個の貫通穴と５個のロール体１０の中空部には、それぞれ上方と下方から固定部材５０が挿入されている。固定部材５０によって、保持体４４と５個のロール体１０とが固定され、保持体４６と５個のロール体１０とが固定されている。 The holding bodies 44 and 46 have through holes at positions corresponding to the hollow portions of the roll body 10. Fixing members 50 are inserted into the hollow portions of the five through holes and the five roll bodies 10 from above and below, respectively. The holding body 44 and the five roll bodies 10 are fixed by the fixing member 50, and the holding body 46 and the five roll bodies 10 are fixed.
　図５に示すように、梱包体２００は、各部材を互いに固定するため、その外周に沿って帯状に巻き回された紐体５８を有してよい。梱包体２００は、包装材として、保持体４４，４６、固定部材５０及び紐体５８を有する。なお、図６では紐体５８は図示されずに省略されている。５個のロール体１０の側面は、保持体４４，４６のどちらかによって覆われている。このため、それぞれのロール体１０の側面を保護することできる。これによって、例えば搬送時における振動等から各ロール体１０を保護することができる。 As shown in FIG. 5, the packing body 200 may have a string body 58 wound in a band shape along the outer periphery thereof in order to fix each member to each other. The packing body 200 has holding bodies 44 and 46, a fixing member 50, and a string body 58 as packaging materials. In FIG. 6, the string body 58 is not shown and is omitted. The side surfaces of the five roll bodies 10 are covered by either the holding bodies 44 or 46. Therefore, the side surface of each roll body 10 can be protected. Thereby, for example, each roll body 10 can be protected from vibration during transportation and the like.
　変形例では、保護フィルム３０が両側面に貼り付けられたロール体１０を、ポリエチレン等の樹脂製の包袋に個別に又は纏めて入れた後に、上述の包装材（保持体４４，４６、固定部材５０及び紐体５８）で包装して梱包体２００と同様の梱包体を得てもよい。別の変形例では、ロール体１０を包装することに代えて、梱包体２００全体をポリエチレン等の樹脂製の包袋に収容してもよい。いずれの場合も、ポリエチレン等の樹脂製の包袋の代わりにアルミニウム蒸着が施された防湿性の梱包用シートを使用してもよい。 In the modified example, the roll body 10 to which the protective film 30 is attached to both side surfaces is individually or collectively put in a resin packaging bag such as polyethylene, and then the above-mentioned packaging materials ( retainers 44, 46, fixed) are fixed. A packaging body similar to the packaging body 200 may be obtained by packaging with the member 50 and the string body 58). In another modification, instead of packaging the roll body 10, the entire packaging body 200 may be housed in a resin packaging bag such as polyethylene. In either case, a moisture-proof packing sheet with aluminum vapor deposition may be used instead of the packaging bag made of resin such as polyethylene.
　ロール体１０は側面２１を覆う保護フィルム３０を備えることから、本体部２０の側面２１と包装材をなす保持体４４，４６とが直接接触しない。このため、側面２１と保持体４４，４６とが擦れ合うことによる摩耗及び摩耗に伴う異物の発生を抑制することができる。また、搬送及び保管等の際に、梱包体２００の内部に異物が侵入したとしても、本体部２０の側面２１への異物の付着を抑制することができる。これによって、本体部２０に巻き付けられたシート１１に付着する異物が低減され、シート１１を使用して製造される製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。したがって、シート１１を用いて製造される製品又は半製品の歩留まりを向上することができる。 Since the roll body 10 includes the protective film 30 that covers the side surface 21, the side surface 21 of the main body 20 and the holding bodies 44 and 46 forming the packaging material do not come into direct contact with each other. Therefore, it is possible to suppress wear caused by the side surface 21 and the holding bodies 44 and 46 rubbing against each other and generation of foreign matter due to the wear. Further, even if a foreign substance enters the inside of the packing body 200 during transportation and storage, it is possible to suppress the adhesion of the foreign substance to the side surface 21 of the main body 20. As a result, foreign matter adhering to the sheet 11 wound around the main body 20 can be reduced, and the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured by using the sheet 11 can be suppressed. Therefore, the yield of the product or semi-finished product manufactured by using the sheet 11 can be improved.
　図７は、梱包体のさらに別の実施形態を示す図であり、図８は図７の梱包体の分解図である。梱包体３００は、中心軸方向に沿って一列に並ぶ４個のロール体１０Ａと、これらを収容する包袋７０とを備える。包袋７０は、ポリエチレン等の樹脂製の袋であってよく、アルミニウム蒸着が施された防湿性の梱包用シートで構成されたものであってよい。図８では、包袋７０は図示されずに省略されている。隣り合う本体部２０の間には保護フィルム３３が装着されている。保護フィルム３３は基材フィルムとその両主面上に粘着層とを有する。この粘着層によって、保護フィルム３３が本体部２０の側面を覆うように貼り付けられている。このように、梱包体３００に含まれるロール体１０Ａは、少なくとも一つの保護フィルム３３を隣り合うロール体１０Ａと共用している。互いに隣接する２つのロール体１０Ａは、その間において保護フィルム３３を共用している。 FIG. 7 is a diagram showing still another embodiment of the package, and FIG. 8 is an exploded view of the package of FIG. 7. The packing body 300 includes four roll bodies 10A arranged in a row along the central axis direction, and a packaging bag 70 for accommodating these. The packaging bag 70 may be a bag made of a resin such as polyethylene, and may be a bag made of a moisture-proof packing sheet on which aluminum vapor deposition is applied. In FIG. 8, the packaging bag 70 is not shown and is omitted. A protective film 33 is mounted between the adjacent main bodies 20. The protective film 33 has a base film and an adhesive layer on both main surfaces thereof. The protective film 33 is attached by this adhesive layer so as to cover the side surface of the main body 20. As described above, the roll body 10A included in the packing body 300 shares at least one protective film 33 with the adjacent roll bodies 10A. The two roll bodies 10A adjacent to each other share a protective film 33 between them.
　梱包体３００において、両端に配置される本体部２０の外側の側面には、一方の主面上に粘着層を有する保護フィルム３０が粘着層と当該側面とが対向するようにして貼り付けられている。４個のロール体１０Ａは、各本体部２０の各側面を覆うように当該各側面に保護フィルム３０又は保護フィルム３３が貼り付けられている。これによって、各本体部２０の各側面を保護することができる。なお、変形例では、図１及び図２に示されるように、本体部２０の両方の側面に保護フィルム３０が貼り合わされたロール体１０を、軸方向に沿って一列に並ぶようにして包袋７０に収容してもよい。 In the packing body 300, a protective film 30 having an adhesive layer on one main surface is attached to the outer side surfaces of the main body 20 arranged at both ends so that the adhesive layer and the side surface face each other. There is. A protective film 30 or a protective film 33 is attached to each side surface of the four roll bodies 10A so as to cover each side surface of each main body portion 20. Thereby, each side surface of each main body portion 20 can be protected. In the modified example, as shown in FIGS. 1 and 2, the roll bodies 10 to which the protective films 30 are attached to both side surfaces of the main body 20 are arranged in a line along the axial direction to form a packaging bag. It may be accommodated in 70.
　包袋７０に収容される４個のロール体１０Ａには芯材５６が挿通されている。芯材５６の両端部は包袋７０から露出し、両端部のそれぞれはリング部材７２を介してキャップ部材５４で固定されている。キャップ部材５４は、一対のリング部材７２が対向方向に付勢されるように取り付けられる。これによって、４個のロール体１０Ａは一対のリング部材７２の間に固定される。梱包体３００は、包装材として、包袋７０、リング部材７２、芯材５６及びキャップ部材５４を有する。 A core material 56 is inserted through the four roll bodies 10A housed in the packaging bag 70. Both ends of the core member 56 are exposed from the packaging bag 70, and each of the both ends is fixed by a cap member 54 via a ring member 72. The cap member 54 is attached so that the pair of ring members 72 are urged in the opposite direction. As a result, the four roll bodies 10A are fixed between the pair of ring members 72. The packaging body 300 has a packaging bag 70, a ring member 72, a core material 56, and a cap member 54 as packaging materials.
　ロール体１０Ａは側面２１を覆う保護フィルム３０，３３を備えることから、隣り合う本体部２０の側面２１同士が直接接触しない。また、キャップ部材５４及び外部のものと直接接触しない。このため、側面２１同士の擦れ合い及び外部のものとの接触による摩耗及び摩耗に伴う異物の発生を十分に抑制することができる。また、搬送及び保管等の際に、包袋７０の内部に異物が侵入したとしても、本体部２０の側面２１への異物の付着を抑制することができる。これによって、本体部２０に巻き付けられたシート１１を使用する際の異物を低減して、シート１１を使用して製造される製品又は半製品におけるピンホール及び傷等の発生を抑制することができる。したがって、シート１１を用いて製造される製品又は半製品の歩留まりを向上することができる。 Since the roll body 10A includes the protective films 30 and 33 covering the side surfaces 21, the side surfaces 21 of the adjacent main body 20 do not come into direct contact with each other. In addition, it does not come into direct contact with the cap member 54 and external objects. Therefore, it is possible to sufficiently suppress wear due to rubbing between the side surfaces 21 and contact with an external object, and generation of foreign matter due to wear. Further, even if a foreign substance enters the inside of the packaging bag 70 during transportation and storage, it is possible to suppress the adhesion of the foreign substance to the side surface 21 of the main body portion 20. This makes it possible to reduce foreign matter when using the sheet 11 wound around the main body 20, and suppress the occurrence of pinholes, scratches, etc. in the product or semi-finished product manufactured using the sheet 11. .. Therefore, the yield of the product or semi-finished product manufactured by using the sheet 11 can be improved.
　図９は、保護フィルムの一実施形態を示す断面図である。保護フィルム３１は、中央部に穴３２を有するリング形状を有しており、基材フィルム３４と粘着層３５とセパレータ３８をこの順に備える。粘着層３５からセパレータ３８を取り外すと保護フィルム３０となる。この保護フィルム３０は、図１及び図２等に示されるように、粘着層３５と本体部２０の側面２１とが対向するようにして本体部２０の側面２１に貼り付けられる。 FIG. 9 is a cross-sectional view showing an embodiment of the protective film. The protective film 31 has a ring shape having a hole 32 in the central portion, and includes a base film 34, an adhesive layer 35, and a separator 38 in this order. When the separator 38 is removed from the adhesive layer 35, it becomes a protective film 30. As shown in FIGS. 1 and 2, the protective film 30 is attached to the side surface 21 of the main body 20 so that the adhesive layer 35 and the side surface 21 of the main body 20 face each other.
　粘着層３５は、本体部２０の側面２１を保護する観点及び側面２１に付着する異物を除去する観点から、十分な粘着力を有することが好ましい。一方で、最終的には保護フィルム３０は本体部２０の側面２１から取り除かれるものであることから、取り除かれた後に粘着層３５が本体部の側面に残存しないこと（すなわち、糊移りしないこと）が好ましい。 The adhesive layer 35 preferably has sufficient adhesive strength from the viewpoint of protecting the side surface 21 of the main body 20 and removing foreign matter adhering to the side surface 21. On the other hand, since the protective film 30 is finally removed from the side surface 21 of the main body 20, the adhesive layer 35 does not remain on the side surface of the main body after being removed (that is, glue does not transfer). Is preferable.
　十分な粘着力を有しつつ、糊移りを十分に抑制する観点から、粘着層３５の１８０度剥離強度は例えば３～３５，０００ｍＮ／２５ｍｍ（対ガラス貼合）であってよく、５～５，０００ｍＮ／２５ｍｍ（対ガラス貼合）であってよい。本開示における１８０度剥離強度は、ＪＩＳ　Ｚ０２３７：２００９に準拠して測定される値である。粘着層３５の粘着力が低すぎると本体部２０の側面２１と十分に密着し難くなる傾向にある。一方、当該粘着力が高すぎると側面２１から剥がし難くなる傾向にある。 From the viewpoint of sufficiently suppressing glue transfer while having sufficient adhesive strength, the 180-degree peel strength of the adhesive layer 35 may be, for example, 3 to 35,000 mN / 25 mm (bonded to glass), and 5 to 5 It may be 000 mN / 25 mm (bonded to glass). The 180-degree peel strength in the present disclosure is a value measured in accordance with JIS Z0237: 2009. If the adhesive strength of the adhesive layer 35 is too low, it tends to be difficult to sufficiently adhere to the side surface 21 of the main body portion 20. On the other hand, if the adhesive strength is too high, it tends to be difficult to peel off from the side surface 21.
　粘着層３５におけるゲル分率は、貼着力を高くしつつ糊移りを十分に抑制する観点から、８５質量％以上であってよく、９０質量％以上であってもよい。本開示におけるゲル分率は、実施例に記載された方法によって測定される値である。 The gel fraction in the adhesive layer 35 may be 85% by mass or more, or 90% by mass or more, from the viewpoint of sufficiently suppressing glue transfer while increasing the adhesive force. The gel fraction in the present disclosure is a value measured by the method described in Examples.
　基材フィルム３４は、特に限定されず、例えば、合成樹脂フィルム等を用いることができる。合成樹脂としては、例えば、ポリエステル；ポリエチレン及びポリプロピレン等のポリオレフィン；ポリ乳酸；ポリメタクリレート、ポリメチルメタクリレート等のアクリル樹脂；ナイロン６，６等のポリアミド；ポリ塩化ビニル；ポリウレタン；ポリスチレン；ポリカーボネート；ポリフェニレンスルフィド；並びに、ポリテトラフルオロエチレン等のフッ素系樹脂等が挙げられる。合成樹脂は、好ましくはポリエステルを含み、より好ましくはポリエチレンテレフタレートを含む。ポリエチレンテレフタレートフィルムは、比較的安価であり、力学的性質に優れる。 The base film 34 is not particularly limited, and for example, a synthetic resin film or the like can be used. Examples of the synthetic resin include polyester; polyolefins such as polyethylene and polypropylene; polylactic acid; acrylic resins such as polymethacrylate and polymethylmethacrylate; polyamides such as nylons 6 and 6; polyvinyl chloride; polyurethane; polystyrene; polycarbonate; polyphenylene sulfide. In addition, a fluororesin such as polytetrafluoroethylene can be mentioned. The synthetic resin preferably contains polyester, more preferably polyethylene terephthalate. Polyethylene terephthalate film is relatively inexpensive and has excellent mechanical properties.
　基材フィルム３４の厚さは、例えば１０～３００μｍであってよく、３０～２００μｍであってもよい。基材フィルム３４の厚さを１０μｍ以上とすることによって、本体部２０の側面２１を十分に保護しつつ、側面２１から取り除く際に保護フィルム３０が破断することを抑制できる。基材フィルム３４の厚さを３００μｍ以下にすることによって、コストを低減することができる。 The thickness of the base film 34 may be, for example, 10 to 300 μm, or 30 to 200 μm. By setting the thickness of the base film 34 to 10 μm or more, it is possible to sufficiently protect the side surface 21 of the main body 20 and prevent the protective film 30 from breaking when it is removed from the side surface 21. The cost can be reduced by reducing the thickness of the base film 34 to 300 μm or less.
　粘着層３５は、特に限定されず、例えば樹脂を含む。樹脂としては、例えば、アクリル系樹脂、メタクリル系樹脂、ウレタン系樹脂、セルロース系樹脂、酢酸ビニル系樹脂、エチレン－酢酸ビニル系樹脂、エポキシ系樹脂、ナイロン－エポキシ系樹脂、塩化ビニル系樹脂、クロロプレンゴム系樹脂、シアノアクリレート系樹脂、シリコーン系樹脂、変性シリコーン系樹脂、水性高分子－イソシアネート系樹脂、スチレン－ブタジエンゴム系樹脂、ニトリルゴム系樹脂、アセタール樹脂、フェノール樹脂、ポリアミド樹脂、ポリイミド樹脂、メラミン樹脂、ユリア樹脂、臭素樹脂、デンプン系樹脂、ポリエステル樹脂、ポリオレフィン樹脂等が挙げられる。また、硬化反応系も特に限定されず、例えばイソシアネート系材料と反応させて硬化させるタイプであってよく、ＵＶを照射することで硬化するタイプ等であってもよい。また、ロール体は輸送中に高温に曝されることがあるため、粘着層３５は耐熱性に優れるものであってよい。このような樹脂を含有する塗工液を基材フィルム３４の上に塗布して粘着層３５を形成することができる。 The adhesive layer 35 is not particularly limited and contains, for example, a resin. Examples of the resin include acrylic resin, methacrylic resin, urethane resin, cellulose resin, vinyl acetate resin, ethylene-vinyl acetate resin, epoxy resin, nylon-epoxy resin, vinyl chloride resin, and chloroprene. Rubber-based resin, cyanoacrylate-based resin, silicone-based resin, modified silicone-based resin, aqueous polymer-isocyanate-based resin, styrene-butadiene rubber-based resin, nitrile rubber-based resin, acetal resin, phenol resin, polyamide resin, polyimide resin, Examples thereof include melamine resin, urea resin, bromine resin, starch-based resin, polyester resin, and polyolefin resin. Further, the curing reaction system is not particularly limited, and may be, for example, a type that cures by reacting with an isocyanate-based material, or a type that cures by irradiating UV. Further, since the roll body may be exposed to a high temperature during transportation, the adhesive layer 35 may have excellent heat resistance. A coating liquid containing such a resin can be applied onto the base film 34 to form the adhesive layer 35.
　粘着層３５は、帯電防止剤等の添加物質を含んでいてよい。添加物質としては、例えば４級アンモニウム塩を成分として含むもの、シリケート成分を含むもの、及びポリピロール等の導電性高分子が挙げられる。ただし、添加物質はこれらに限定されない。粘着層３５が帯電防止剤を含むことによって、ロール体から保護フィルムを剥がしたときの帯電によるゴミ等の異物付着を抑制することができる。 The adhesive layer 35 may contain an additive substance such as an antistatic agent. Examples of the additive substance include those containing a quaternary ammonium salt as a component, those containing a silicate component, and conductive polymers such as polypyrrole. However, the additive substance is not limited to these. When the adhesive layer 35 contains an antistatic agent, it is possible to suppress the adhesion of foreign substances such as dust due to charging when the protective film is peeled off from the roll body.
　粘着層３５の厚さは、粘着力を十分に高くしつつ糊移りを十分に抑制する観点から、１～１００μｍであってよく、３～８０μｍであってもよい。セパレータ３８は、例えばポリエチレン製のフィルムであってよく、ポリエチレンテレフタレートフィルムの表面に剥離層を有したフィルム等であってもよい。剥離層を有するフィルムの場合、当該剥離層を介してフィルムが粘着層３５に貼り合わせられていてもよい。 The thickness of the adhesive layer 35 may be 1 to 100 μm or 3 to 80 μm from the viewpoint of sufficiently suppressing the adhesive transfer while sufficiently increasing the adhesive force. The separator 38 may be, for example, a film made of polyethylene, or may be a film having a release layer on the surface of the polyethylene terephthalate film or the like. In the case of a film having a release layer, the film may be attached to the adhesive layer 35 via the release layer.
　本開示の保護フィルムは、図９のようなものに限定されない。図１５は、保護フィルムの別の例を示す断面図である。保護フィルム３１Ａは、基材フィルム３４とその両方の主面上のそれぞれに、基材フィルム３４側から、粘着層３５及びセパレータ３８をこの順に有する。このような保護フィルム３１Ａから一対のセパレータ３８を取り外すと図８に示す保護フィルム３３とすることができる。また、粘着層は、組成が互いに異なる２つ以上の層が積層された構造であってもよい。また、保護フィルム３１，３１Ａはセパレータ３８を有していなくてもよい。また、粘着層３５と基材フィルム３４との間、及び／又は、基材フィルム３４の粘着層３５側と反対側に任意の層を有していてもよい。また、保護フィルムは穴を有していなくてもよく、その外形も特に限定されない。例えば半円状又は扇状として、本体部２０の一つの側面２１を複数の保護フィルムで覆ってもよい。 The protective film of the present disclosure is not limited to the one shown in FIG. FIG. 15 is a cross-sectional view showing another example of the protective film. The protective film 31A has an adhesive layer 35 and a separator 38 in this order from the base film 34 side on each of the base film 34 and both main surfaces thereof. By removing the pair of separators 38 from such a protective film 31A, the protective film 33 shown in FIG. 8 can be obtained. Further, the adhesive layer may have a structure in which two or more layers having different compositions are laminated. Further, the protective films 31 and 31A do not have to have the separator 38. Further, an arbitrary layer may be provided between the adhesive layer 35 and the base film 34 and / or on the side opposite to the adhesive layer 35 side of the base film 34. Further, the protective film does not have to have holes, and its outer shape is not particularly limited. For example, one side surface 21 of the main body 20 may be covered with a plurality of protective films in a semicircular shape or a fan shape.
　図１０は、本体部２０の使用方法の一例を説明するための図である。ロール状の本体部２０の中空部２２に例えば回転可能な軸体を挿入した状態で、本体部２０に巻かれているシート１１の先端を引っ張って、本体部２０からシート１１を繰り出す。繰り出されたシート１１の表面に塗布液をコーティングして種々の製品又は半製品を製造することができる。ただし、本体部２０の使用方法はこのような例に限定されない。 FIG. 10 is a diagram for explaining an example of how to use the main body 20. For example, with a rotatable shaft body inserted into the hollow portion 22 of the roll-shaped main body 20, the tip of the sheet 11 wound around the main body 20 is pulled to pull out the sheet 11 from the main body 20. Various products or semi-finished products can be manufactured by coating the surface of the drawn sheet 11 with a coating liquid. However, the usage of the main body 20 is not limited to such an example.
　図１１は、図１０に示すシート１１のＸＩ－ＸＩ線断面図である。シート１１は、例えば電子部品の製造に用いられる離型フィルムであり、基材フィルム１２と剥離層１４とを有する。シート１１の剥離層１４側の表面１４ａに、塗布液がコーティングされる。シート１１は、例えば、積層セラミックコンデンサの製造に使用されるグリーンシートを製造するための離型フィルムであってよい。この場合、シート１１の表面１４ａには、塗布液としてセラミックスラリー又は電極スラリーが塗布される。 FIG. 11 is a sectional view taken along line XI-XI of the sheet 11 shown in FIG. The sheet 11 is a release film used for manufacturing electronic parts, for example, and has a base film 12 and a release layer 14. The coating liquid is coated on the surface 14a of the sheet 11 on the release layer 14 side. The sheet 11 may be, for example, a release film for manufacturing a green sheet used for manufacturing a multilayer ceramic capacitor. In this case, the surface 14a of the sheet 11 is coated with a ceramic slurry or an electrode slurry as a coating liquid.
　基材フィルム１２は、例えば、合成樹脂フィルム等であってよい。合成樹脂としては、例えば、ポリエステル；ポリエチレン及びポリプロピレン等のポリオレフィン；ポリ乳酸；ポリメタクリレート、ポリメチルメタクリレート等のアクリル樹脂；ナイロン６，６等のポリアミド；ポリ塩化ビニル；ポリウレタン；ポリスチレン；ポリカーボネート；ポリフェニレンスルフィド；並びに、ポリテトラフルオロエチレン等のフッ素系樹脂等が挙げられる。合成樹脂は、好ましくはポリエステルを含み、より好ましくはポリエチレンテレフタレートを含む。ポリエチレンテレフタレートフィルムは、比較的安価であり、且つ力学的性質及び透明性に優れる。 The base film 12 may be, for example, a synthetic resin film or the like. Examples of the synthetic resin include polyester; polyolefins such as polyethylene and polypropylene; polylactic acid; acrylic resins such as polymethacrylate and polymethylmethacrylate; polyamides such as nylons 6 and 6; polyvinyl chloride; polyurethane; polystyrene; polycarbonate; polyphenylene sulfide. In addition, a fluororesin such as polytetrafluoroethylene can be mentioned. The synthetic resin preferably contains polyester, more preferably polyethylene terephthalate. Polyethylene terephthalate film is relatively inexpensive and has excellent mechanical properties and transparency.
　基材フィルム１２はフィラーを含有してもよい。基材フィルム１２がフィラーを含有することで、シート１１の機械的強度を十分に高めることができる。基材フィルム１２におけるフィラーの含有量は特に制限されるものではないが、透明性を悪化させない程度であることが好ましい。フィラーとしては、例えば、炭酸カルシウム、リン酸カルシウム、酸化チタン、シリカ、フュームドシリカ、カオリン、タルク、アルミナ及び有機粒子等が挙げられる。 The base film 12 may contain a filler. When the base film 12 contains a filler, the mechanical strength of the sheet 11 can be sufficiently increased. The content of the filler in the base film 12 is not particularly limited, but it is preferably such that the transparency is not deteriorated. Examples of the filler include calcium carbonate, calcium phosphate, titanium oxide, silica, fumed silica, kaolin, talc, alumina, organic particles and the like.
　基材フィルム１２の厚さは、例えば１０～１００μｍであってよく、２０～５０μｍであってもよい。基材フィルム１２の厚さを１０μｍ以上とすることによって、シート１１の寸法安定性等の物理特性を高くすることができる。基材フィルム１２の厚さを１００μｍ以下とすることによって、シート１１の単位面積当たりの製造コストをより低減することができる。 The thickness of the base film 12 may be, for example, 10 to 100 μm, or 20 to 50 μm. By setting the thickness of the base film 12 to 10 μm or more, physical characteristics such as dimensional stability of the sheet 11 can be enhanced. By setting the thickness of the base film 12 to 100 μm or less, the manufacturing cost per unit area of the sheet 11 can be further reduced.
　剥離層１４は、例えば、反応性官能基を有するシリコーン系樹脂とその他の重合性成分とを含有する組成物の硬化物で構成されてよい。剥離層１４は、剥離層１４の深さ方向に沿ってシリコーン系樹脂が特定の分布を有していてもよい。 The release layer 14 may be composed of, for example, a cured product of a composition containing a silicone-based resin having a reactive functional group and other polymerizable components. In the release layer 14, the silicone-based resin may have a specific distribution along the depth direction of the release layer 14.
　本体部２０に巻かれているシートの構造は上述の例に限定されず、例えば剥離層１４を有していなくてよいし、剥離層１４と基材フィルム１２との間に任意の層を有していてもよい。また、基材フィルム１２の剥離層１４とは反対側に任意の層を有していてもよい。 The structure of the sheet wound around the main body 20 is not limited to the above example, and for example, the release layer 14 may not be provided, and an arbitrary layer may be provided between the release layer 14 and the base film 12. You may be doing it. Further, an arbitrary layer may be provided on the side of the base film 12 opposite to the release layer 14.
　シート１１の製造方法の一例を以下に説明する。本例の製造方法は、反応性官能基を有するシリコーン系樹脂を含有する組成物と溶剤とを含む塗布液を基材上に塗工する工程（塗工工程）と、上記塗布液中の上記溶剤を低減して感光層を設ける工程（溶剤低減工程）と、上記感光層を露光させることによって上記組成物の硬化物で構成される剥離層を形成する工程（露光工程）と、を有する。 An example of the manufacturing method of the sheet 11 will be described below. The production method of this example includes a step of coating a coating liquid containing a composition containing a silicone-based resin having a reactive functional group and a solvent on a substrate (coating step), and the above-mentioned coating liquid in the coating liquid. It includes a step of reducing the solvent and providing a photosensitive layer (solvent reduction step), and a step of forming a release layer composed of a cured product of the composition by exposing the photosensitive layer (exposure step).
　塗工工程は、塗布液を基材フィルム１２に塗工して上記組成物を含む塗膜を形成する工程である。塗膜を形成する際の塗工方法は、例えば、バーコート法、マイヤーバーコート法、リバースコート法、グラビアコート法、ロッドコート法、ダイコート法、及びスプレーコート法等を用いることができる。 The coating step is a step of applying the coating liquid to the base film 12 to form a coating film containing the above composition. As the coating method for forming the coating film, for example, a bar coating method, a Meyer bar coating method, a reverse coating method, a gravure coating method, a rod coating method, a die coating method, a spray coating method and the like can be used.
　塗布液に含まれる溶剤は、反応性官能基を有するシリコーン系樹脂とその他の成分とを溶解することが可能な溶剤が用いられる。溶剤としては、例えば、トルエン、キシレン、メチルエチルケトン（ＭＥＫ）、イソプロピルアルコール（ＩＰＡ）、プロピレングリコールモノメチルエーテル（ＰＧＭＥ）、及びプロピレングリコールモノメチルエーテルアセテート（ＰＥＧＭＡ）等が挙げられる。これらの溶剤は一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。 As the solvent contained in the coating liquid, a solvent capable of dissolving the silicone-based resin having a reactive functional group and other components is used. Examples of the solvent include toluene, xylene, methyl ethyl ketone (MEK), isopropyl alcohol (IPA), propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PEGMA) and the like. One of these solvents may be used alone, or two or more of these solvents may be used in combination.
　剥離層１４を形成するための組成物は、反応性官能基を有するシリコーン系樹脂、反応性官能基を有する（メタ）アクリレート、及び反応性官能基を有するアクリルシリコーングラフトポリマーを含有してもよい。反応性官能基は、ビニル基及び（メタ）アクリロイル基からなる群より選択される少なくとも一つの官能基を含んでよい。本開示において、「（メタ）アクリレート」とはアクリレート及びメタクリレートを意味し、「（メタ）アクリロイル基」はアクリロイル基及びメタクリロイル基を示す。 The composition for forming the release layer 14 may contain a silicone-based resin having a reactive functional group, a (meth) acrylate having a reactive functional group, and an acrylic silicone graft polymer having a reactive functional group. .. The reactive functional group may contain at least one functional group selected from the group consisting of vinyl groups and (meth) acryloyl groups. In the present disclosure, "(meth) acrylate" means acrylate and methacrylate, and "(meth) acryloyl group" indicates an acryloyl group and a methacryloyl group.
　反応性官能基を有するシリコーン系樹脂を含有する組成物は、例えば、光重合開始剤を含んでよい。光重合開始剤としては、活性光線の照射によってラジカルを発生する化合物を用いることができる。光重合開始剤としては、例えば、１－ヒドロキシ－シクロヘキシル－フェニル－ケトン、２－ヒドロキシ－２－メチル－１－フェニル－プロパン－１－オン、及び２－ヒドロキシ－１－｛４－［４－（２－ヒドロキシ－２－メチル－プロピオニル）－ベンジル］フェニル｝－２－メチル－プロパン－１－オン等のα－ヒドロキシアルキルフェノン、並びに２－メチル－１－（４－メチルチオフェニル）－２－モルフォリノプロパン－１－オン等のα－アミノアルキルフェノン等が挙げられる。 The composition containing a silicone-based resin having a reactive functional group may contain, for example, a photopolymerization initiator. As the photopolymerization initiator, a compound that generates radicals by irradiation with active light can be used. Examples of the photopolymerization initiator include 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1-phenyl-propane-1-one, and 2-hydroxy-1- {4- [4- [4- [4-]. (2-Hydroxy-2-methyl-propionyl) -benzyl] phenyl} -2-methyl-propan-1-one and other α-hydroxyalkylphenones, as well as 2-methyl-1- (4-methylthiophenyl) -2- Examples thereof include α-aminoalkylphenone such as morpholinopropan-1-one.
　溶剤低減工程は、上記溶剤の含有量を低減して上記組成物を含有する感光層を設ける工程である。溶剤低減工程は、好ましくは、上記溶剤を除去して上記組成物からなる感光層を設ける工程である。溶剤除去は、例えば、５０～１５０℃の温度で１０秒間～１０分間かけて加熱乾燥することで行ってもよい。 The solvent reduction step is a step of reducing the content of the solvent and providing a photosensitive layer containing the composition. The solvent reduction step is preferably a step of removing the solvent and providing a photosensitive layer made of the composition. The solvent may be removed by heating and drying at a temperature of 50 to 150 ° C. for 10 seconds to 10 minutes.
　剥離フィルムの製造方法における露光工程は、感光層に活性光線を照射することによって反応性官能基を反応させ組成物を硬化させて、剥離層を形成する工程である。活性光線の照射量は、感光層の厚さ等に応じて調整することができる。 The exposure step in the method for producing a release film is a step of irradiating the photosensitive layer with an active ray to react reactive functional groups and cure the composition to form a release layer. The irradiation amount of the active light can be adjusted according to the thickness of the photosensitive layer and the like.
　以上の工程によって、シート１１を製造することができる。このようにして製造されたシート１１を、剥離層１４が内側になるように円筒状に巻き取って本体部２０が得られる。本体部２０の両側面に保護フィルム３０をそれぞれ貼り付けることによってロール体１０を得ることができる。なお、ロール体１０及びシート１１の製造方法は上述の方法に限定されない。シート１１は、種々の用途に用いることが可能である。例えば、電子部品の製造方法における離型フィルムとして用いることができる。 The sheet 11 can be manufactured by the above steps. The sheet 11 manufactured in this manner is wound into a cylindrical shape so that the release layer 14 is on the inside to obtain the main body portion 20. The roll body 10 can be obtained by attaching the protective films 30 to both side surfaces of the main body 20. The method for manufacturing the roll body 10 and the sheet 11 is not limited to the above method. The sheet 11 can be used for various purposes. For example, it can be used as a release film in a method for manufacturing electronic components.
　一実施形態に係る電子部品の製造方法は、ロール体１０から保護フィルム３０を取り外し、本体部２０から繰り出されるシート１１の剥離層１４側の表面１４ａにセラミック粉末及び電極材料からなる群より選ばれる少なくとも一つと溶媒とを含有する塗布液をコーティングする工程（塗工工程）と、塗布液から溶剤を除去することによってセラミックグリーンシート及び電極グリーンシートからなる群より選ばれる少なくとも一つのグリーンシートを形成して部品シートを得る工程（部品シート形成工程）と、部品シートを用いて電子部品を製造する工程（製造工程）と、を有する。 The method for manufacturing an electronic component according to one embodiment is selected from the group consisting of a protective film 30 removed from the roll body 10 and a ceramic powder and an electrode material on the surface 14a of the sheet 11 unwound from the main body 20 on the release layer 14 side. A step of coating a coating liquid containing at least one and a solvent (coating step) and a step of removing the solvent from the coating liquid to form at least one green sheet selected from the group consisting of a ceramic green sheet and an electrode green sheet. It has a process of obtaining a component sheet (part sheet forming process) and a process of manufacturing an electronic component using the component sheet (manufacturing process).
　図１２は、部品シートの一例を示す断面図である。図１２のセラミック部品シート８０は、離型フィルムであるシート１１と、剥離層１４側の表面１４ａ上にセラミックグリーンシート６２と、セラミックグリーンシート６２上に電極グリーンシート６４とを有する。図１２のように、セラミックグリーンシート及び電極グリーンシートの両方を備えるセラミック部品シートを製造する場合、以下の例のように塗工工程の一部とシート形成工程を繰り返し行ってもよい。 FIG. 12 is a cross-sectional view showing an example of a parts sheet. The ceramic component sheet 80 of FIG. 12 has a sheet 11 which is a release film, a ceramic green sheet 62 on the surface 14a on the release layer 14 side, and an electrode green sheet 64 on the ceramic green sheet 62. When producing a ceramic component sheet including both a ceramic green sheet and an electrode green sheet as shown in FIG. 12, a part of the coating process and the sheet forming process may be repeated as in the following example.
　塗工工程では、シート１１における剥離層１４側の表面１４ａに、セラミック粉末を含有する塗布液（セラミックスラリー）を、例えば、ドクターブレード装置等によりコーティングする。 In the coating process, the surface 14a on the release layer 14 side of the sheet 11 is coated with a coating liquid (ceramic slurry) containing ceramic powder by, for example, a doctor blade device or the like.
　セラミックスラリーは、例えば、誘電体原料（セラミック粉体）と有機ビヒクルとを含有する。誘電体原料としては、焼成によって複合酸化物や酸化物となる各種化合物が挙げられる。各種化合物としては、例えば、炭酸塩、硝酸塩、水酸化物、及び有機金属化合物等が挙げられる。セラミックスラリーは、必要に応じて、分散剤、可塑剤、帯電除剤、誘電体、ガラスフリット、及び絶縁体等を更に含有してもよい。 The ceramic slurry contains, for example, a dielectric material (ceramic powder) and an organic vehicle. Examples of the dielectric raw material include various compounds that become composite oxides or oxides by firing. Examples of various compounds include carbonates, nitrates, hydroxides, organometallic compounds and the like. The ceramic slurry may further contain a dispersant, a plasticizer, a charge remover, a dielectric, a glass frit, an insulator and the like, if necessary.
　シート形成工程では、シート１１の表面１４ａにコーティングしたセラミックペーストを、市販の乾燥装置内で、例えば５０～１００℃の温度で１～２０分間かけて加熱乾燥させて、セラミックグリーンシート６２を形成する。セラミックグリーンシート６２は、乾燥前に比較して５～２５％収縮する。 In the sheet forming step, the ceramic paste coated on the surface 14a of the sheet 11 is heated and dried in a commercially available drying device at a temperature of, for example, 50 to 100 ° C. for 1 to 20 minutes to form a ceramic green sheet 62. .. The ceramic green sheet 62 shrinks 5 to 25% as compared to before drying.
　セラミックグリーンシート６２としては、例えば、積層セラミックコンデンサを形成するための誘電体グリーンシート等が挙げられる。セラミックグリーンシート６２の厚さは、例えば、０．０３～５μｍ、又は０．１～１μｍであってよい。変形例では、セラミックグリーンシート６２を、シート１１から剥離して焼成し、例えば、チタン酸カルシウム、チタン酸ストロンチウム又はチタン酸バリウムを含む誘電体を形成してもよい。これを電子部品として用いてもよい。 Examples of the ceramic green sheet 62 include a dielectric green sheet for forming a multilayer ceramic capacitor. The thickness of the ceramic green sheet 62 may be, for example, 0.03 to 5 μm or 0.1 to 1 μm. In the modified example, the ceramic green sheet 62 may be peeled from the sheet 11 and fired to form a dielectric containing, for example, calcium titanate, strontium titanate or barium titanate. This may be used as an electronic component.
　シート形成工程で得られたセラミックグリーンシート６２の表面６２ａ上に、例えばスクリーン印刷装置を用いて、所定のパターンとなるように、電極スラリーをコーティングする塗工工程を行う。そして、コーティングした電極ペーストを、市販の乾燥装置内で、例えば５０～１００℃の温度で１～２０分間かけて加熱乾燥させて、電極グリーンシート６４を形成するシート形成工程を行う。これによって、シート１１上に、シート１１側からセラミックグリーンシート６２及び電極グリーンシート６４をこの順に有するセラミック部品シート８０を得ることができる。 A coating step of coating the electrode slurry so as to have a predetermined pattern is performed on the surface 62a of the ceramic green sheet 62 obtained in the sheet forming step, for example, using a screen printing device. Then, the coated electrode paste is heated and dried in a commercially available drying device at a temperature of, for example, 50 to 100 ° C. for 1 to 20 minutes to perform a sheet forming step of forming the electrode green sheet 64. Thereby, the ceramic component sheet 80 having the ceramic green sheet 62 and the electrode green sheet 64 in this order can be obtained from the sheet 11 side on the sheet 11.
　電極スラリーは、例えば、各種導電性金属及び合金等の導電体材料、並びに、各種酸化物、有機金属化合物、及びレジネート等との焼成後に導電体材料となる材料等からなる群より選択される少なくとも一つと、有機ビヒクルとを含有する。導電体材料としては、例えば、ニッケル金属、ニッケル合金、及びこれらの混合物等が挙げられる。 The electrode slurry is selected from the group consisting of, for example, conductive materials such as various conductive metals and alloys, and materials that become conductive materials after firing with various oxides, organometallic compounds, and resists. It contains one and an organic vehicle. Examples of the conductor material include nickel metals, nickel alloys, and mixtures thereof.
　セラミックスラリー及び電極スラリーに含有される有機ビヒクルとしては、バインダ樹脂を有機溶剤に溶解したものを用いることができる。バインダ樹脂としては、例えば、エチルセルロース、アクリル樹脂、ブチラール系樹脂、ポリビニルアセタール、ポリビニルアルコール、ポリオレフィン、ポリウレタン、ポリスチレン、及びこれらの共重合体等が挙げられる。 As the organic vehicle contained in the ceramic slurry and the electrode slurry, a binder resin dissolved in an organic solvent can be used. Examples of the binder resin include ethyl cellulose, acrylic resin, butyral resin, polyvinyl acetal, polyvinyl alcohol, polyolefin, polyurethane, polystyrene, and copolymers thereof.
　有機ビヒクルに用いられる有機溶剤としては、例えば、テルピネオール、アルコール、ブチルカルビトール、アセトン、トルエン、キシレン、及び酢酸ベンジル等が挙げられる。これらの有機溶剤は１種を単独で用いてもよく、２種以上を組み合わせて用いてもよい。アルコールとしては、例えば、メタノール、エタノール、プロパノール、及びブタノール等が挙げられる。 Examples of the organic solvent used in the organic vehicle include terpineol, alcohol, butyl carbitol, acetone, toluene, xylene, benzyl acetate and the like. One of these organic solvents may be used alone, or two or more of these organic solvents may be used in combination. Examples of the alcohol include methanol, ethanol, propanol, butanol and the like.
　電子部品として積層セラミックコンデンサを製造する場合、上述の手順で複数のセラミック部品シートを作製した後、以下の製造工程を行う。すなわち、セラミック部品シートのグリーンシートを複数積層して積層体を得る。この積層体を焼成して得られた焼結体に端子電極を形成して積層セラミックコンデンサを得る。 When manufacturing a multilayer ceramic capacitor as an electronic component, the following manufacturing process is performed after manufacturing a plurality of ceramic component sheets by the above procedure. That is, a plurality of green sheets of ceramic component sheets are laminated to obtain a laminated body. A terminal electrode is formed on the sintered body obtained by firing this laminated body to obtain a laminated ceramic capacitor.
　具体的には、セラミック部品シート８０からシート１１を剥離してグリーンシート６０を得る。このグリーンシート６０の裏面６２ｂと別のセラミック部品シート８０の電極グリーンシート６４とが向き合うようにして、グリーンシート６０とセラミック部品シート８０とを積層する。その後、積層したセラミック部品シート８０からシート１１を剥離する。このような手順を繰り返し行って、グリーンシート６０を積層することによって、積層体を得ることができる。 Specifically, the sheet 11 is peeled off from the ceramic component sheet 80 to obtain a green sheet 60. The green sheet 60 and the ceramic component sheet 80 are laminated so that the back surface 62b of the green sheet 60 and the electrode green sheet 64 of another ceramic component sheet 80 face each other. After that, the sheet 11 is peeled off from the laminated ceramic component sheet 80. A laminated body can be obtained by laminating the green sheets 60 by repeating such a procedure.
　得られた積層体（グリーンチップ）を焼成して焼結体を得る。焼成条件は、１１００～１３００℃で、加湿した窒素と水素との混合ガス等の雰囲気中で行うとよい。ただし、焼成時の雰囲気中の酸素分圧は、好ましくは１０－２Ｐａ以下、より好ましくは１０－２～１０－８Ｐａとする。内部電極層（電極グリーンシート６４）の導電体材料として、例えば、ニッケル及びニッケル合金等の卑金属を用いる場合、２００～６００℃で行うことが好ましい。次に、焼結体の側面上に、端子電極用ペーストを焼きつけて端子電極を形成することによって電子部品である積層セラミックコンデンサを得ることができる。 The obtained laminate (green chips) is fired to obtain a sintered body. The firing conditions are 1100 to 1300 ° C., and it is preferable to carry out the firing in an atmosphere such as a mixed gas of humidified nitrogen and hydrogen. However, the partial pressure of oxygen in the atmosphere at the time of firing is preferably 10-2 Pa or less, more preferably 10-2 to 10-8 Pa. When a base metal such as nickel or a nickel alloy is used as the conductor material of the internal electrode layer (electrode green sheet 64), the temperature is preferably 200 to 600 ° C. Next, a multilayer ceramic capacitor, which is an electronic component, can be obtained by baking a terminal electrode paste on the side surface of the sintered body to form a terminal electrode.
　上述の積層セラミックコンデンサの製造方法では、異物が低減された上述のシート１１を用いているため、得られる電子部品、すなわち積層セラミックコンデンサのピンホール及び傷等の発生を十分に抑制することができる。このため、高い歩留まりで積層セラミックコンデンサを製造することができる。 In the above-mentioned manufacturing method of the multilayer ceramic capacitor, since the above-mentioned sheet 11 in which foreign substances are reduced is used, it is possible to sufficiently suppress the occurrence of pinholes and scratches of the obtained electronic component, that is, the multilayer ceramic capacitor. .. Therefore, a monolithic ceramic capacitor can be manufactured with a high yield.
　図１３は、積層セラミックコンデンサの断面図である。積層セラミックコンデンサ９０は、内装部９２と、この内装部９２を積層方向に挟む一対の外装部９３とを備えている。積層セラミックコンデンサ９０は、側面に端子電極９５を有している。 FIG. 13 is a cross-sectional view of the multilayer ceramic capacitor. The multilayer ceramic capacitor 90 includes an interior portion 92 and a pair of exterior portions 93 that sandwich the interior portion 92 in the stacking direction. The monolithic ceramic capacitor 90 has a terminal electrode 95 on the side surface.
　内装部９２は、複数（本例では１３層）のセラミック層９６と、複数（本例では１２層）の内部電極層９４とを有している。セラミック層９６と内部電極層９４とは、交互に積層されている。内部電極層９４は、端子電極９５と電気的に接続されている。外装部９３は、セラミック層により形成されている。このセラミック層は、例えば、セラミックグリーンシート６２を用いて形成してもよい。 The interior portion 92 has a plurality of (13 layers in this example) ceramic layers 96 and a plurality of (12 layers in this example) internal electrode layers 94. The ceramic layer 96 and the internal electrode layer 94 are alternately laminated. The internal electrode layer 94 is electrically connected to the terminal electrode 95. The exterior portion 93 is formed of a ceramic layer. This ceramic layer may be formed by using, for example, a ceramic green sheet 62.
　この製造方法では、異物が低減されたシート１１を用いていることから、セラミック層９６及び内部電極層９４におけるピンホール及び傷等の発生を抑制することができる。このため、電子部品の歩留まりを向上することができる。 In this manufacturing method, since the sheet 11 in which foreign substances are reduced is used, it is possible to suppress the occurrence of pinholes, scratches, etc. in the ceramic layer 96 and the internal electrode layer 94. Therefore, the yield of electronic components can be improved.
　以上、本開示の幾つかの実施形態を説明したが、本開示は上記実施形態に何ら限定されるものではない。例えば、電子部品は積層セラミックコンデンサに限定されるものではなく、リチウムイオン電池等の電極であってもよい。 Although some embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments. For example, the electronic component is not limited to the multilayer ceramic capacitor, and may be an electrode of a lithium ion battery or the like.
　実施例及び比較例を参照して本開示の内容をより詳細に説明するが、本開示は下記の実施例に限定されるものではない。 The contents of the present disclosure will be described in more detail with reference to Examples and Comparative Examples, but the present disclosure is not limited to the following Examples.
（実施例１）
＜ロール状の本体部の作製＞
　ポリジメチルシロキサンとジメチルハイドロジェンシランを含む、市販の硬化型シリコーン（信越化学工業株式会社製、商品名：ＫＳ－８４７Ｈ、固形分濃度：３０質量％）を準備した。この硬化型シリコーン３００ｇと、白金触媒（信越化学工業株式会社製、商品名：ＣＡＴ－ＰＬ－５０Ｔ）３．０ｇと、溶液（メチルエチルケトンとトルエンとを１：１の質量比で混合した溶液）２７００ｇとを配合して、固形分濃度が３．０質量％であるシリコーン樹脂分散液を調製した。 (Example 1)
<Making a roll-shaped main body>
A commercially available curable silicone containing polydimethylsiloxane and dimethylhydrogensilane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KS-847H, solid content concentration: 30% by mass) was prepared. 300 g of this curable silicone, 3.0 g of a platinum catalyst (trade name: CAT-PL-50T manufactured by Shinetsu Chemical Industry Co., Ltd.), and 2700 g of a solution (a solution in which methyl ethyl ketone and toluene are mixed at a mass ratio of 1: 1). To prepare a silicone resin dispersion having a solid content concentration of 3.0% by mass.
　シリコーン樹脂分散液を、乾燥後の塗膜厚が０．１μｍとなるようにバーコーターを用いて２軸延伸ポリエチレンテレフタレートフィルム（ＰＥＴフィルム、厚み：３１μｍ）に塗布した。これを、１１０℃、４０秒間の条件で加熱して乾燥及び硬化反応を行ってＰＥＴフィルム上に剥離層を形成した。このようにして、ＰＥＴフィルムとその上に剥離層とを有する剥離フィルム（シート）を得た。この剥離フィルム（幅：２００ｍｍ、長さ：６，０００ｍ）を、剥離層が内側になるようにして、ベークライト製の巻き芯（内径：３インチ、外径８８ｍｍ、幅２０２ｍｍ）に巻き取って、ロール状の本体部を得た。このようなロール状の本体部を３つ作製した。本体部の作製はクリーンルーム内で行った。 The silicone resin dispersion was applied to a biaxially stretched polyethylene terephthalate film (PET film, thickness: 31 μm) using a bar coater so that the coating thickness after drying was 0.1 μm. This was heated at 110 ° C. for 40 seconds to perform a drying and curing reaction to form a release layer on the PET film. In this way, a release film (sheet) having a PET film and a release layer on the PET film was obtained. This release film (width: 200 mm, length: 6,000 m) was wound around a Bakelite winding core (inner diameter: 3 inches, outer diameter 88 mm, width 202 mm) with the release layer on the inside. A roll-shaped main body was obtained. Three such roll-shaped main bodies were produced. The main body was manufactured in a clean room.
＜異物個数の評価（振動試験前）＞
　作製した３本の本体部の両側面を、それぞれキーエンス社製のデジタルマイクロスコープを使用して観察し、異物の数をカウントした。観察条件は、以下のとおりとした。なお、観察はクリーンルーム内で行った。
　　倍率：１００倍
　　１視野のサイズ：横×縦＝３．４ｍｍ×２．５５ｍｍ（＝８．６ｍｍ２） <Evaluation of the number of foreign substances (before vibration test)>
Both sides of the three main bodies produced were observed using a digital microscope manufactured by KEYENCE, respectively, and the number of foreign substances was counted. The observation conditions were as follows. The observation was carried out in a clean room.
Magnification: 100 times 1 Field of view size: Width x Length = 3.4 mm x 2.55 mm (= 8.6 mm 2 )
　測定は、図１４において黒丸で示すように、側面２１を中心角が４５°の扇形に分割されるように放射状に伸びる仮想線を描き、該仮想線上の計１６箇所を選択して行った。３つの本体部の両側面２１のそれぞれにおいて１６箇所の測定を行い（合計９６箇所）、１箇所当たり（１視野当たり）の平均値を求めた。評価結果は表１に示すとおりであった。 The measurement was performed by drawing a virtual line extending radially so that the side surface 21 is divided into a fan shape having a central angle of 45 ° as shown by a black circle in FIG. 14, and a total of 16 points on the virtual line were selected. Measurements were performed at 16 points on each of the side surfaces 21 of the three main bodies (96 points in total), and the average value per point (per field of view) was obtained. The evaluation results are as shown in Table 1.
＜保護フィルムの作製＞
　アクリル系粘着剤（ＤＩＣ株式会社製、商品名：ＣＴ－３０８８、不揮発分：４４～４６質量％、粘度：１，２００～２，０００ｍＰａ・ｓ）を、メチルエチルケトンに溶解させた。この溶解液に対して、イソシアネート系硬化剤（ＤＩＣ株式会社製、商品名：Ｄ－１００Ｋ、不揮発分：１００質量％、ＮＣＯ：２１．２～２２．２質量％、粘度：２，０００～４，０００ｍＰａ・ｓ）を４．０質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。 <Making a protective film>
An acrylic pressure-sensitive adhesive (manufactured by DIC Corporation, trade name: CT-3088, non-volatile content: 44 to 46% by mass, viscosity: 1,200 to 2,000 mPa · s) was dissolved in methyl ethyl ketone. Isocyanate-based curing agent (manufactured by DIC Co., Ltd., trade name: D-100K, non-volatile content: 100% by mass, NCO: 21.2 to 22.2% by mass, viscosity: 2,000 to 4) with respect to this solution. 000 mPa · s) was added in an amount of 4.0% by mass to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass.
　この粘着剤溶液を、乾燥後の粘着層の厚みが１０μｍとなるように、２軸延伸ＰＥＴフィルム（厚み：１２５μｍ）の上にバーコーターでコーティングし、１００℃で２分間加熱して乾燥して粘着層を形成した。セパレータとして、上述の本体部の作製に用いた剥離フィルムを用い、剥離フィルムの剥離層と上述の粘着層とを貼り合わせて保護フィルムを得た。この保護フィルムを、セパレータを内側にしてロール状に巻き取って保護フィルムロールを作製した。この保護フィルムロールを常温（２３℃）で５日間保管してエージングを行った。 This pressure-sensitive adhesive solution is coated on a biaxially stretched PET film (thickness: 125 μm) with a bar coater so that the thickness of the pressure-sensitive adhesive layer after drying is 10 μm, and heated at 100 ° C. for 2 minutes to dry. An adhesive layer was formed. As the separator, the release film used for producing the main body was used, and the release layer of the release film and the adhesive layer described above were bonded to obtain a protective film. This protective film was wound into a roll with the separator inside to prepare a protective film roll. This protective film roll was stored at room temperature (23 ° C.) for 5 days for aging.
＜ゲル分率の測定＞
　保護フィルムを２５ｍｍ×５０ｍｍのサイズに切断して測定用試料を作製した。測定用試料からセパレータを取り外し、精密天秤で秤量した（質量Ａ）。１００ｍｌのガラス瓶に秤量した試料を入れた。そして、このガラス瓶にトルエンを５０ｍｌ入れ、２３℃で２４時間静置した。 <Measurement of gel fraction>
A protective film was cut into a size of 25 mm × 50 mm to prepare a measurement sample. The separator was removed from the measurement sample and weighed with a precision balance (mass A). The weighed sample was placed in a 100 ml glass bottle. Then, 50 ml of toluene was put into this glass bottle, and the mixture was allowed to stand at 23 ° C. for 24 hours.
　濾過に使用する不織布を精密天秤で秤量した（質量Ｂ）。ガラス瓶の内容物（セパレータを取り外した保護フィルムも含む）を、秤量した不織布を使って濾過した。使用した不織布を１００℃の乾燥機で２時間乾燥して完全にトルエンを蒸発させた後、その不織布を２３℃の環境下に１時間放置した。その後、精密天秤で不織布を秤量した（質量Ｃ）。保護フィルムの作製に使用した、測定用試料と同じサイズ（２５ｍｍ×５０ｍｍ）のＰＥＴフィルムの質量を精密天秤で秤量した（質量Ｄ）。以下の計算式で、粘着層のゲル分率を求めた。 The non-woven fabric used for filtration was weighed with a precision balance (mass B). The contents of the glass bottle (including the protective film from which the separator was removed) were filtered using a weighed non-woven fabric. The non-woven fabric used was dried in a dryer at 100 ° C. for 2 hours to completely evaporate toluene, and then the non-woven fabric was left in an environment of 23 ° C. for 1 hour. Then, the non-woven fabric was weighed with a precision balance (mass C). The mass of the PET film of the same size (25 mm × 50 mm) as the measurement sample used for producing the protective film was weighed with a precision balance (mass D). The gel fraction of the adhesive layer was calculated by the following formula.
　ゲル分率（質量％）＝（質量Ｃ－質量Ｄ－質量Ｂ）×１００／（質量Ａ－質量Ｄ）
　上記測定は２回行った。上記計算式で計算したゲル分率の平均値は表１に示すとおりであった。 Gel fraction (mass%) = (mass C-mass D-mass B) x 100 / (mass A-mass D)
The above measurement was performed twice. The average value of the gel fraction calculated by the above formula is as shown in Table 1.
＜粘着力の測定＞
　保護フィルムを幅×長さ＝２５ｍｍ×１５ｃｍのサイズに切り出した。厚さ３ｍｍのガラス板に、粘着層とガラス板との界面に気泡が入らないようにハンドローラーを用いて保護フィルムを貼り付けた。２３℃及び５０％ＲＨの条件で２４時間放置した後、保護フィルムを１８０度方向に引っ張って３００ｍｍ／ｍｉｎの速度でガラス板から剥離して、保護フィルムの粘着力を測定した。結果は表１に示すとおりであった。 <Measurement of adhesive strength>
The protective film was cut into a size of width × length = 25 mm × 15 cm. A protective film was attached to a glass plate having a thickness of 3 mm using a hand roller so that air bubbles did not enter the interface between the adhesive layer and the glass plate. After standing for 24 hours under the conditions of 23 ° C. and 50% RH, the protective film was pulled in the 180 degree direction and peeled off from the glass plate at a speed of 300 mm / min, and the adhesive strength of the protective film was measured. The results are as shown in Table 1.
＜ロール体及び梱包体の作製＞
　保護フィルムロールから保護フィルムを繰り出して、ロール状の本体部の側面の形状と一致するように、ドーナツ状に打ち抜いた。ロール状の本体部の側面に、ドーナツ状に打ち抜いた保護フィルムを貼ってロール体を得た。このロール体をゴミ及び異物が付着していないポリエチレン製の包袋に入れた後、包装材で包装して、図３に示すような形態を有する梱包体を得た。同様の手順で合計３つの梱包体を作製した。 <Making rolls and packages>
The protective film was unwound from the protective film roll and punched into a donut shape so as to match the shape of the side surface of the roll-shaped main body. A donut-shaped punched protective film was attached to the side surface of the roll-shaped main body to obtain a rolled body. This roll body was placed in a polyethylene packaging bag to which dust and foreign matter did not adhere, and then wrapped with a packaging material to obtain a packaging body having a form as shown in FIG. A total of three packages were prepared by the same procedure.
＜異物付着数の評価（振動試験後）＞
　得られた３つの梱包体を用い、ＪＩＳ　Ｚ　０２００：２０１３（包装貨物－性能試験方法一般通則）に記載されているＪＩＳ　Ｚ　０２３２の「振動試験区分」の「レベル２」に準じて振動試験を実施した。その後、梱包体を開封して３本のロール体を取り出し、３本のロールの両側面に貼り合わせられていたそれぞれの保護フィルムを剥がした。その後、上述の「異物個数の評価＜振動試験前＞」と同じ方法で、同評価の測定箇所と同じ箇所の異物の測定を行い、平均値を求めた。評価結果は表１に示すとおりであった。 <Evaluation of the number of foreign substances attached (after vibration test)>
Using the obtained three packages, perform a vibration test according to "Level 2" of "Vibration test category" of JIS Z 0232 described in JIS Z 0200: 2013 (Packaged cargo-general rules for performance test method). Carried out. Then, the packing body was opened, the three roll bodies were taken out, and the protective films attached to both side surfaces of the three rolls were peeled off. Then, by the same method as the above-mentioned "evaluation of the number of foreign substances <before vibration test>", the foreign substances at the same points as the measurement points of the same evaluation were measured, and the average value was obtained. The evaluation results are as shown in Table 1.
（実施例２）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。アクリル系粘着剤（ＤＩＣ株式会社製、商品名：ＣＴ－３０２０、不揮発分：２５～３５質量％、粘度：１，０００～２，０００ｍＰａ・Ｓ）を、メチルエチルケトンに溶解させた。この溶解液に対して、イソシアネート系硬化剤（ＤＩＣ株式会社製、商品名：Ｄ－１００Ａ、不揮発分：１００質量％、ＮＣＯ：２２．５～２５質量％、粘度：１，０００～２，０００ｍＰａ・ｓ）を３．０質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。この粘着剤溶液を用いたこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 2)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. An acrylic pressure-sensitive adhesive (manufactured by DIC Corporation, trade name: CT-3020, non-volatile content: 25 to 35% by mass, viscosity: 1,000 to 2,000 mPa · S) was dissolved in methyl ethyl ketone. Isocyanate-based curing agent (manufactured by DIC Co., Ltd., trade name: D-100A, non-volatile content: 100% by mass, NCO: 22.5 to 25% by mass, viscosity: 1,000 to 2,000 mPa) with respect to this solution. -S) was added in an amount of 3.0% by mass to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1 except that this pressure-sensitive adhesive solution was used, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例３）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。保護フィルムを作製する際に、溶解液に対するイソシアネート系硬化剤の添加量を３．０質量％から２．０質量％に変更して粘着剤溶液を調製したこと以外は、実施例２と同じ手順で保護フィルムを作製した。作製した保護フィルムを、実施例１と同様にしてロール状に巻き取って保護フィルムロールを作製した。この保護フィルムロールのエージングの日数を５日間から２日間に変更したこと以外は、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 3)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. The same procedure as in Example 2 except that the pressure-sensitive adhesive solution was prepared by changing the amount of the isocyanate-based curing agent added to the solution from 3.0% by mass to 2.0% by mass when producing the protective film. A protective film was prepared in. The prepared protective film was wound into a roll in the same manner as in Example 1 to prepare a protective film roll. A roll body and a package body were produced by the same procedure as in Example 1 except that the number of days of aging of the protective film roll was changed from 5 days to 2 days. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例４）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。保護フィルムを作製する際に、溶解液に対するイソシアネート系硬化剤の添加量を２．０質量％から１．０質量％に変更して粘着剤溶液を調製したこと以外は、実施例３と同じ手順で保護フィルムを作製した。作製した保護フィルムを、実施例１と同じ手順でロール状に巻き取って保護フィルムロールを作製した。この保護フィルムロールのエージングの日数を５日間から１日間に変更したこと以外は、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 4)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. The same procedure as in Example 3 except that the pressure-sensitive adhesive solution was prepared by changing the amount of the isocyanate-based curing agent added to the solution from 2.0% by mass to 1.0% by mass when producing the protective film. A protective film was prepared in. The prepared protective film was wound into a roll in the same procedure as in Example 1 to prepare a protective film roll. A roll body and a package body were produced by the same procedure as in Example 1 except that the number of days of aging of the protective film roll was changed from 5 days to 1 day. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例５）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。アクリル系粘着剤（ＤＩＣ株式会社製、商品名：ＣＴ－６０３０、不揮発分：４５～４７質量％、粘度：２，５００～４，５００ｍＰａ・Ｓ）を、メチルエチルケトンに溶解させた。この溶解液に対して、イソシアネート系硬化剤（ＤＩＣ株式会社製、商品名：ＤＮ、不揮発分：７３～７７質量％、ＮＣＯ：１１．５～１２．５質量％）を１．０質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。乾燥後の粘着層の厚みを２５μｍとしたことと、この粘着剤溶液を用いたこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 5)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. An acrylic pressure-sensitive adhesive (manufactured by DIC Corporation, trade name: CT-6030, non-volatile content: 45 to 47% by mass, viscosity: 2,500 to 4,500 mPa · S) was dissolved in methyl ethyl ketone. 1.0% by mass of an isocyanate-based curing agent (manufactured by DIC Co., Ltd., trade name: DN, non-volatile content: 73 to 77% by mass, NCO: 11.5-12.5% by mass) is added to this solution. Then, a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass was prepared. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1 except that the thickness of the adhesive layer after drying was 25 μm and this adhesive solution was used, and the same as in Example 1. A roll body and a package body were prepared by the procedure. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例６）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。シリコーン系粘着剤（信越化学工業株式会社製、商品名：ＫＲ－３７０４、不揮発分：６０質量％、粘度：１００Ｐａ・ｓ）を、トルエンに溶解させた。この溶解液に対して、白金触媒（信越化学工業株式会社製、商品名：ＣＡＴ－ＰＬ－５０Ｔ）を０．５質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。この粘着剤溶液をプライマー処理した２軸延伸ＰＥＴフィルム（厚み：１２５μｍ）の上にバーコーターでコーティングし、１３０℃で３分間加熱して乾燥して粘着層を形成した。このようにして粘着層を形成したこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 6)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. A silicone-based adhesive (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3704, non-volatile content: 60% by mass, viscosity: 100 Pa · s) was dissolved in toluene. A platinum catalyst (manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T) was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass. This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 μm) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例７）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。まず、次の２種類のシリコーン系粘着剤を準備した。
　シリコーン系粘着剤１（信越化学工業株式会社製、商品名：ＫＲ－３７０４、不揮発分：６０質量％、粘度：１００Ｐａ・ｓ）
　シリコーン系粘着剤２（信越化学工業株式会社製、商品名：ＫＲ－３７００、不揮発分：６０質量％、粘度：３０Ｐａ・ｓ） (Example 7)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. First, the following two types of silicone-based adhesives were prepared.
Silicone adhesive 1 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3704, non-volatile content: 60% by mass, viscosity: 100 Pa · s)
Silicone adhesive 2 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3700, non-volatile content: 60% by mass, viscosity: 30 Pa · s)
　シリコーン系粘着剤１とシリコーン系粘着剤２を、８：２の質量比でトルエンに溶解させた。この溶解液に対して、白金触媒（信越化学工業株式会社製、商品名：ＣＡＴ－ＰＬ－５０Ｔ）を０．５質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。この粘着剤溶液をプライマー処理した２軸延伸ＰＥＴフィルム（厚み：１２５μｍ）の上にバーコーターでコーティングし、１３０℃で３分間加熱して乾燥して粘着層を形成した。このようにして粘着層を形成したこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 Silicone-based pressure-sensitive adhesive 1 and silicone-based pressure-sensitive adhesive 2 were dissolved in toluene at a mass ratio of 8: 2. A platinum catalyst (manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T) was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass. This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 μm) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例８）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。実施例７で用いたシリコーン系粘着剤１とシリコーン系粘着剤２を、３：７の質量比でトルエンに溶解させた。この溶解液に対して、白金触媒（信越化学工業株式会社製、商品名：ＣＡＴ－ＰＬ－５０Ｔ）を０．５質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。この粘着剤溶液をプライマー処理した２軸延伸ＰＥＴフィルム（厚み：１２５μｍ）の上にバーコーターでコーティングし、１３０℃で３分間加熱して乾燥して粘着層を形成した。このようにして粘着層を形成したこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Example 8)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. The silicone-based pressure-sensitive adhesive 1 and the silicone-based pressure-sensitive adhesive 2 used in Example 7 were dissolved in toluene at a mass ratio of 3: 7. A platinum catalyst (manufactured by Shinetsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T) was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass. This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 μm) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（実施例９）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。そして、保護フィルムを以下の手順で作製した。シリコーン系粘着剤（信越化学工業株式会社製、商品名：ＫＲ－３７００、不揮発分：６０質量％、粘度：１００Ｐａ・ｓ）を、トルエンに溶解させた。 (Example 9)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Then, a protective film was produced by the following procedure. A silicone-based pressure-sensitive adhesive (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KR-3700, non-volatile content: 60% by mass, viscosity: 100 Pa · s) was dissolved in toluene.
　この溶解液に対して、白金触媒（信越化学工業株式会社製、商品名：ＣＡＴ－ＰＬ－５０Ｔ）を０．５質量％添加し、固形分濃度が２０質量％の粘着剤溶液を調製した。この粘着剤溶液をプライマー処理した２軸延伸ＰＥＴフィルム（厚み：１２５μｍ）の上にバーコーターでコーティングし、１３０℃で３分間加熱して乾燥して粘着層を形成した。このようにして粘着層を形成したこと以外は、実施例１の＜保護フィルムの作製＞と同じ手順で保護フィルムを作製し、実施例１と同じ手順でロール体及び梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 A platinum catalyst (manufactured by Shin-Etsu Chemical Industry Co., Ltd., trade name: CAT-PL-50T) was added in an amount of 0.5% by mass to this solution to prepare a pressure-sensitive adhesive solution having a solid content concentration of 20% by mass. This pressure-sensitive adhesive solution was coated on a primer-treated biaxially stretched PET film (thickness: 125 μm) with a bar coater, heated at 130 ° C. for 3 minutes, and dried to form a pressure-sensitive adhesive layer. A protective film was prepared in the same procedure as in <Preparation of Protective Film> of Example 1, except that the adhesive layer was formed in this way, and a roll body and a package were prepared in the same procedure as in Example 1. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
（比較例１）
　実施例１の＜ロール状の本体部の作製＞と同じ手順で本体部を作製した。この本体部に保護フィルムを貼ることなく本体部をポリエチレン製の包袋に入れ、本体部の両方の側面に、当該側面と同一サイズを有するドーナツ型クッションマット（酒井化学社製：ミナフォーム（商品名、ポリエチレン製発泡シート、厚み：３ｍｍ））を、包袋を介して当接させた。このようにして、比較例１の梱包体を作製した。そして、実施例１と同じ手法で評価を行った。結果は表１に示すとおりであった。 (Comparative Example 1)
The main body was manufactured by the same procedure as in <Preparation of roll-shaped main body> of Example 1. Put the main body in a polyethylene wrapping bag without attaching a protective film to this main body, and donut-shaped cushion mats with the same size as the sides on both sides of the main body (Sakai Chemical Co., Ltd .: Minafoam (product) Name, polyethylene foam sheet, thickness: 3 mm)) was brought into contact with each other via a packaging bag. In this way, the package of Comparative Example 1 was produced. Then, the evaluation was performed by the same method as in Example 1. The results are as shown in Table 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　実施例４，８，９では、振動試験中に保護フィルムから粘着層が部分的に脱落して本体部の側面に残存したため、振動試験前に比べて異物個数が増加した。ただし、比較例１に比べて、その増加幅は小さかった。実施例５では、粘着力を高くしたため、他の実施例よりも保護フィルムが本体部の側面から剥がし難い傾向にあった。一方で、実施例５の異物個数は実施例１と大きくは変わらなかった。 In Examples 4, 8 and 9, the adhesive layer partially fell off from the protective film during the vibration test and remained on the side surface of the main body, so that the number of foreign substances increased as compared with that before the vibration test. However, the rate of increase was smaller than that of Comparative Example 1. In Example 5, since the adhesive strength was increased, the protective film tended to be more difficult to peel off from the side surface of the main body than in other examples. On the other hand, the number of foreign substances in Example 5 was not significantly different from that in Example 1.
　本開示によれば、シートを使用して製造される製品又は半製品の歩留まりを向上することが可能なロール体、梱包体及び保護フィルムが提供される。また、本開示によれば、高い歩留まりで電子部品を製造することが可能な電子部品の製造方法が提供される。 According to the present disclosure, roll bodies, packing bodies and protective films capable of improving the yield of products or semi-finished products manufactured using sheets are provided. Further, the present disclosure provides a method for manufacturing an electronic component capable of manufacturing the electronic component with a high yield.
　１０，１０Ａ…ロール体、１１…シート、１２…基材フィルム、１４…剥離層、１４ａ…表面、２０…本体部、２１…側面、２２…中空部、３０，３１，３１Ａ，３３…保護フィルム、３２…穴、３４…基材フィルム、３５…粘着層、３８…セパレータ、４２，４４，４６…保持体、５０…固定部材、５６…芯材、５４…キャップ部材、６０…グリーンシート、６２…セラミックグリーンシート、６２ａ…表面、６２ｂ…裏面、６４…電極グリーンシート、７０…包袋、７２…リング部材、８０…セラミック部品シート、９０…積層セラミックコンデンサ、９２…内装部、９３…外装部、９４…内部電極層、９５…端子電極、９６…セラミック層、１００，２００，３００…梱包体。 10,10A ... Roll body, 11 ... Sheet, 12 ... Base film, 14 ... Release layer, 14a ... Surface, 20 ... Main body, 21 ... Side, 22 ... Hollow part, 30,31,31A, 33 ... Protective film , 32 ... Hole, 34 ... Base film, 35 ... Adhesive layer, 38 ... Separator, 42, 44, 46 ... Holder, 50 ... Fixing member, 56 ... Core material, 54 ... Cap member, 60 ... Green sheet, 62 ... Ceramic green sheet, 62a ... Front surface, 62b ... Back surface, 64 ... Electrode green sheet, 70 ... Packaging bag, 72 ... Ring member, 80 ... Ceramic parts sheet, 90 ... Multilayer ceramic capacitor, 92 ... Interior part, 93 ... Exterior part , 94 ... Internal electrode layer, 95 ... Terminal electrode, 96 ... Ceramic layer, 100, 200, 300 ... Package.

Claims (8)

  1. 　シートが円筒状に巻かれている本体部と、
    　粘着層を有する保護フィルムと、を備え、
    　前記保護フィルムが、前記本体部の側面を覆うように前記粘着層によって当該側面に貼り付けられている、ロール体。     The main body where the sheet is wound in a cylindrical shape,
    With a protective film having an adhesive layer,
    A roll body in which the protective film is attached to the side surface by the adhesive layer so as to cover the side surface of the main body portion.
  2. 　前記シートは、塗布液がコーティングされる表面を有する、請求項１に記載のロール体。 The roll body according to claim 1, wherein the sheet has a surface coated with a coating liquid.
  3. 　前記シートは、基材フィルムと塗布液がコーティングされる剥離層とを備える、請求項１に記載のロール体。 The roll body according to claim 1, wherein the sheet includes a base film and a release layer coated with a coating liquid.
  4. 　前記保護フィルムの前記粘着層におけるゲル分率が８５質量％以上である、請求項１～３のいずれか一項に記載のロール体。 The roll body according to any one of claims 1 to 3, wherein the gel fraction of the protective film in the adhesive layer is 85% by mass or more.
  5. 　請求項１～４のいずれか一項に記載のロール体と、前記ロール体を包装する包装材と、を備える、梱包体。 A packing body comprising the roll body according to any one of claims 1 to 4 and a packaging material for packaging the roll body.
  6. 　請求項１～４のいずれか一項に記載のロール体から前記保護フィルムを取り外し、前記本体部から繰り出された前記シートに塗布液をコーティングする工程と、
    　前記塗布液を乾燥させ、部品シートを得る工程と、
    　前記部品シートを用いて電子部品を製造する工程と、を有する、電子部品の製造方法。     A step of removing the protective film from the roll body according to any one of claims 1 to 4 and coating the sheet drawn out from the main body with a coating liquid.
    The process of drying the coating liquid to obtain a parts sheet and
    A method for manufacturing an electronic component, comprising a step of manufacturing the electronic component using the component sheet.
  7. 　塗布液がコーティングされるシートが円筒状に巻かれているロール状の本体部の保護フィルムであって、
    　基材フィルムと粘着層とを備え、
    　前記粘着層によって、前記本体部の側面に貼り付けられる保護フィルム。     A roll-shaped protective film for the main body on which the sheet coated with the coating liquid is wound in a cylindrical shape.
    With a base film and an adhesive layer,
    A protective film attached to the side surface of the main body by the adhesive layer.
  8. 　前記粘着層のゲル分率が８５質量％以上である、請求項７に記載の保護フィルム。

          The protective film according to claim 7, wherein the adhesive layer has a gel fraction of 85% by mass or more.
PCT/JP2020/025351 2019-06-28 2020-06-26 Rolled body, packed body, protective film and method for producing electronic device WO2020262650A1 (en)

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JP2018065960A (en) * 2016-10-21 2018-04-26 三菱ケミカル株式会社 Protective film and fine uneven structure body with protective film
JP2018168388A (en) * 2018-06-26 2018-11-01 藤森工業株式会社 Surface protective film

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JP6077442B2 (en) * 2012-01-04 2017-02-08 株式会社クラレ Package of polyvinyl alcohol film roll
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JP2002099079A (en) * 2000-09-22 2002-04-05 Hitachi Chem Co Ltd Packaged body, method of packaging photosensitive element, method of preventing edge fusion of photosensitive element, and method of preventing winding dislocation of photosensitive element
JP2009083271A (en) * 2007-09-28 2009-04-23 Tdk Corp Laminated film and manufacturing method of multilayer ceramic electronic component
JP2011006648A (en) * 2009-06-29 2011-01-13 Nitto Denko Corp Roll of optical sheet member, and continuous manufacturing method of liquid crystal display device
JP2011206996A (en) * 2010-03-29 2011-10-20 Tdk Corp Peeling film
WO2014104217A1 (en) * 2012-12-27 2014-07-03 旭化成イーマテリアルズ株式会社 Photosensitive resin laminate roll
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