CN208594230U - Bonding film with protective glue band - Google Patents

Bonding film with protective glue band Download PDF

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Publication number
CN208594230U
CN208594230U CN201820275087.7U CN201820275087U CN208594230U CN 208594230 U CN208594230 U CN 208594230U CN 201820275087 U CN201820275087 U CN 201820275087U CN 208594230 U CN208594230 U CN 208594230U
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CN
China
Prior art keywords
protective glue
glue band
adhesive tape
film
adhesive
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Active
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CN201820275087.7U
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Chinese (zh)
Inventor
荒添铁也
安斋刚史
仓田雄
仓田雄一
高田耕辅
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Lintec Corp
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Lintec Corp
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

The utility model improves the fabrication yield for being pasted with the graphite flake of adhesive tape.Bonding film with protective glue band have stripping film, comprising be set to removing film surface first adhesive phase and be set to above-mentioned first adhesive phase with the adhesive tape of the resin film on the surface of above-mentioned stripping film opposite side and the protective glue band with second adhesive phase and protection resin film.Above-mentioned second adhesive phase be set to above-mentioned adhesive tape with the surface of above-mentioned stripping film opposite side and be 5mN/25mm or more 300mN/25mm or less by the bonding force to stainless steel plate that 180 degree disbonded test obtains.Above-mentioned protection is set to the surface with above-mentioned adhesive tape opposite side of above-mentioned second adhesive phase with resin film.Above-mentioned protection can be removed from above-mentioned resin film with resin film together with above-mentioned second adhesive phase.Above-mentioned protective glue band with relative to above-mentioned adhesive tape with a thickness of 1 times or more 20 times thickness below, with required Young's modulus.

Description

Bonding film with protective glue band
Technical field
The utility model relates to a kind of bonding films with protective glue band.
Background technique
In order to promote to make in the small-sized electronic products such as mobile phone, laptop set on the heat dissipation of internal electronic component With the graphite flake for having heat transmission.For the purpose of improving the appearance of graphite flake, protection graphite flake surface etc., such as sometimes from by shelling Stripping film is removed on the coloring bonding film constituted from film/adhesive phase/resin film/coloring layer, and will be by adhesive phase/resin The coloring adhesive tape that film/coloring layer is constituted is attached on graphite flake.In addition, attaching protective glue on coloring bonding film sometimes Band (for example, referring to patent document 1).
Graphite flake is covered by coloring adhesive tape as a result, and the appearance of graphite flake is improved.About the coloring adhesive glue Band, in order to electronic product miniaturization or improve by graphite flake bring electronic component thermal diffusivity, it is desirable to further decrease it Thickness.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2015-224284 bulletin
Utility model content
The technical problems to be solved in the utility model
However, since the rigidity of adhesive tape is weak, existing when such adhesive tape is attached at graphite flake It is attached on the adhesive tape of graphite flake and generates fold or relaxation, lead to the fabrication yield for the graphite flake for being pasted with adhesive tape The case where reduction.
In view of the above circumstances, the purpose of this utility model is to provide a kind of bonding films with protective glue band, to mention Height is pasted with for the purpose of the fabrication yield of the graphite flake of adhesive tape.
Solve the technological means of technical problem
In order to achieve the above object, the bonding film with protective glue band of a mode of the utility model is protection graphite The bonding film of piece, with structure below.
The above-mentioned bonding film with protective glue band has stripping film, adhesive tape and protective glue band.Above-mentioned adhesive tape Include: being set to the first adhesive phase on the surface of above-mentioned stripping film and is being set to above-mentioned first adhesive phase with above-mentioned removing The resin film on the surface of film opposite side.Above-mentioned protective glue band has second adhesive phase and protection resin film.Above-mentioned second is viscous Mixture layer is set to the surface of above-mentioned adhesive tape and by what 180 degree disbonded test obtained 5mN/25mm or more 300mN/25mm or less.Above-mentioned protection is being set to above-mentioned second adhesive phase with above-mentioned bonding with resin film The surface of adhesive tape opposite side.Above-mentioned protection is with resin film can remove from above-mentioned resin film together with above-mentioned second adhesive phase Mode constitute.Above-mentioned protective glue band have relatively above-mentioned adhesive tape with a thickness of 1 times or more 20 times of thickness below, and have There is the Young's modulus of 2000Mpa or more.
As a result, when the above-mentioned adhesive tape with protective glue band for peeling above-mentioned stripping film off to be attached on graphite flake, The rigidity of the above-mentioned adhesive tape with protective glue band increases, therefore is peeling the above-mentioned with protective glue band of above-mentioned stripping film off Fold and relaxation are not likely to produce on adhesive tape.The fabrication yield for being pasted with the graphite flake of above-mentioned adhesive tape as a result, is able to It improves.
In the above-mentioned bonding film with protective glue band, above-mentioned adhesive tape can also be to be obtained by 180 degree disbonded test To the bonding force to above-mentioned graphite flake be 100mN/25mm or more 1000mN/25mm mode below constitute.
Even if peeling above-mentioned protective glue band off from the above-mentioned adhesive tape for being attached at above-mentioned graphite flake as a result, above-mentioned first It is also not susceptible to remove between adhesive phase and above-mentioned graphite flake.
It, can also the bonding force to above-mentioned adhesive tape to be obtained by 90 degree of disbonded tests in above-mentioned protective glue band It is to the bonding force of above-mentioned adhesive tape for 10mN/25mm or more 500mN/25mm or less, by what 180 degree disbonded test obtained 5mN/25mm or more 100mN/25mm mode below is constituted.
As a result, when peeling above-mentioned protective glue band off from the above-mentioned adhesive tape for being attached at above-mentioned graphite, above-mentioned first is viscous It is not peeling-off between mixture layer and above-mentioned graphite flake.
In the above-mentioned bonding film with protective glue band, the above-mentioned protective glue band obtained by 180 degree disbonded test is to upper The bonding force for stating adhesive tape can be and be glued by the above-mentioned adhesive tape that 180 degree disbonded test obtains to above-mentioned graphite flake 0.02 times or more 0.5 times or less of resultant force.
As a result, when peeling above-mentioned protective glue band off from the above-mentioned adhesive tape for being attached at above-mentioned graphite flake, above-mentioned first Not peeling-off between adhesive phase and above-mentioned graphite flake, above-mentioned protective glue band is stripped from above-mentioned adhesive tape.
In the above-mentioned bonding film with protective glue band, above-mentioned protection resin film can be so as to pass through Ge Erlai (Gurley) flexibility that test obtains is that 0.1mN/25mm or more 2mN/25mm mode below is constituted.
As a result, when the above-mentioned adhesive tape for peeling above-mentioned stripping film off is attached at above-mentioned graphite flake, due to above-mentioned protection Adhesive tape has rigidity, therefore is not easy to generate fold and relaxation on the above-mentioned adhesive tape for be attached at above-mentioned graphite flake.
In the above-mentioned bonding film with protective glue band, above-mentioned adhesive tape can further have on above-mentioned resin film Coloring layer is pasted with above-mentioned protective glue band on the surface of the above-mentioned coloring layer of the above-mentioned adhesive tape with above-mentioned coloring layer. The appearance for being attached at the above-mentioned adhesive tape of above-mentioned graphite flake as a result, is improved.
In the above-mentioned bonding film with protective glue band, above-mentioned resin film can have 1 μm or more 6 μm of thickness below.By This, the thickness for eliminating the above-mentioned adhesive tape of above-mentioned protective glue band is thin.
In the above-mentioned bonding film with protective glue band, above-mentioned first adhesive phase can have 1 μm or more 5 μm of thickness below Degree.The thickness for eliminating the above-mentioned adhesive tape of above-mentioned protective glue band as a result, is thin.
In the above-mentioned bonding film with protective glue band, above-mentioned protection resin film can have 25 μm or more 200 μm or less Thickness.The rigidity of above-mentioned protective glue band is increased as a result,.
In the above-mentioned bonding film with protective glue band, above-mentioned second adhesive phase can have 3 μm or more 50 μm it is below Thickness.There can be appropriate bond properties as protective glue band as a result,.
Utility model effect
As described above, the fabrication yield for being pasted with the graphite flake of adhesive tape is improved according to the utility model.
Detailed description of the invention
Fig. 1 (a) is stereoscopic schematic diagram of the bonding film with protective glue band of present embodiment under the state that is wound；Figure 1 (b) is the diagrammatic cross-section of the bonding film with protective glue band of present embodiment.
Fig. 2 (a) is the stereoscopic schematic diagram of the heat transmission sheet material of present embodiment；Fig. 2 (b) is the heat transmission of present embodiment The diagrammatic cross-section of sheet material.
Fig. 3 is the section signal in the state that the graphite flake with adhesive tape of present embodiment is attached on shell Figure.
Fig. 4 (a) and Fig. 4 (b) is to indicate the adhesive tape with protective glue band of present embodiment fitting in graphite flake On manufacturing process a part schematic diagram.
Description of symbols
1: adhesive tape；2: bonding film；3: the bonding film with protective glue band；11: resin film；12: coloring layer；15: thick Face layer；20: first adhesive phase；30: stripping film；30d: lower surface；31: stripping film；32: resin film is used in protection；32d: know Other portion；32t: label portion；32p: pin hole line；33: second adhesive phase；35: protective glue band；60: heat transmission sheet material；100: graphite Piece；101: double faced adhesive tape；101a: adhesive phase；101b: resin film；101c: adhesive phase；102: shell；110: laminated body； 410: work beam；600: laminating machine；601: supporting table；602: pressing roller；603,604: deflector roll；611: rolling out roller；620: roller machine Structure.
Specific embodiment
The embodiments of the present invention is illustrated referring to the drawings.Import XYZ axis in the drawings sometimes Coordinate.
Fig. 1 (a) is stereoscopic schematic diagram of the bonding film with protective glue band of present embodiment under the state that is wound.Figure 1 (b) is the diagrammatic cross-section of the bonding film with protective glue band of present embodiment.
As shown in Fig. 1 (a), the bonding film 3 with protective glue band of present embodiment is constituted in a manner of long sheet.It has The bonding film 3 of protective glue band is the soft resin tape that can be wound along an axis direction.In the example of Fig. 1 (a), DL is wound in and batches on core 410 bonding film 3 with protective glue band along the long side direction.
As shown in Fig. 1 (b), the bonding film 3 with protective glue band has stripping film 30, first adhesive phase 20, resin film 11 and protective glue band 35.Protective glue band 35 has protection resin film 32 and second adhesive phase 33.In the example of Fig. 1 (b) In, the bonding film 3 with protective glue band is protected by 30/ first adhesive phase of stripping film, 20/ resin film, 11/ second adhesive phase 33/ Shield resin film 32 stacks gradually.In the present embodiment, sometimes using 30 side of stripping film as downside, by protection resin 32 side of film is used as upside.
In the present embodiment, structure made of removing protective glue band 35 will be peeled off from the bonding film 3 with protective glue band At as bonding film 2.In addition, by being peeled off made of protective glue band 35 and stripping film 30 from the bonding film 3 with protective glue band It constitutes and is used as adhesive tape 1.Adhesive tape 1 has first adhesive phase 20 and resin film 11.In addition, in the present embodiment, Also at least one of roughened layer 15 and coloring layer 12 be can have in bonding film 3 with protective glue band.That is, adhesive tape 1 has first adhesive phase 20 and resin film 11, can also be further at least one in roughened layer 15 and coloring layer 12 Person.In Fig. 1 (b) and aftermentioned Fig. 2 (b) and Fig. 3, as an example, it is shown provided with roughened layer 15 and coloring layer 12 State.
For example, protective glue band 35 connects with coloring layer 12 when being formed with coloring layer 12 in the bonding film 3 with protective glue band Touching.When being formed further with roughened layer 15 in the bonding film 3 with coloring layer 12, protective glue band 35 connects with roughened layer 15 Touching.In the bonding film 3 with protective glue band, peelable stripping film 30 removes removing from the bonding film 3 with protective glue band Film 30, so as to be attached on graphite flake.When being equipped with coloring layer 12 or roughened layer 15, the adhesive glue that is attached on graphite flake Appearance with 1 is further enhanced.
Stripping film 30 is set to the surface with 11 opposite side of resin film of first adhesive phase 20.First adhesive phase 20 is set It is placed in the surface of stripping film 30.For example, first adhesive phase 20 is set between stripping film 30 and resin film 11.In stripping film 30 20 side of first adhesive phase surface be equipped with become easy the removing of stripping film 30 peeling agent layer (not shown).Tree Adipose membrane 11 is set to the surface with 30 opposite side of stripping film of first adhesive phase 20.For example, when being equipped with coloring layer 12, resin Film 11 is set between coloring layer 12 and first adhesive phase 20.Resin film 11 is the substrate of the bonding film 3 with protective glue band.
When being equipped with coloring layer 12, coloring layer 12 is set to the table with 20 opposite side of first adhesive phase of resin film 11 Face.For example, coloring layer 12 is set between resin film 11 and second adhesive phase 33.Coloring layer 12 is equipped on resin film 11 When, protective glue band 35 is attached at the surface of the coloring layer 12 of the adhesive tape 1 with coloring layer 12.Contain coloring in coloring layer 12 Agent.Colorant is not particularly limited, such as can enumerate carbon black, titanium oxide, calcium carbonate, barium sulfate, yellow ferric oxide, red oxidation Iron, cyanine blue, aluminium powder, mica titanium valve etc..In the present embodiment, for example added with carbon black in coloring layer 12, coloring layer 12 Color is black.
When being further provided with roughened layer 15 on coloring layer 12, roughened layer 15 is set to coloring layer 12 and resin The surface of 11 opposite side of film.For example, roughened layer 15 is set between coloring layer 12 and protective glue band 35.Roughened layer 15 is for example For be able to suppress adhesive tape 1 ground (graphite flake) gloss without photosphere.
In protective glue band 35, second adhesive phase 33 is set to the surface with 30 opposite side of stripping film of adhesive tape 1. For example, when being equipped with coloring layer 12 and roughened layer 15, second adhesive phase 33 be set to roughened layer 15 with coloring layer 12 The surface of opposite side.In this case, second adhesive phase 33 is set between roughened layer 15 and protection resin film 32.This Outside, in protective glue band 35, protection resin film 32 is set to the table with 1 opposite side of adhesive tape of second adhesive phase 33 Face.For example, when being equipped with coloring layer 12 and roughened layer 15, protection resin film 32 be set to second adhesive phase 33 with it is thick The surface of 15 opposite side of face layer.By the way that protective glue band 35 to be set on adhesive tape 1, protective glue band can be certainly protected Layer below 35.Layer especially below protective glue band 35 be in it is very thin, then more need protective glue band 35.
Identification part 32d can be equipped at least on any one in protection resin film 32 and second adhesive phase 33.? This, identification part 32d refer to can easily verify that protection in resin film 32 and second adhesive phase 33 at least any one be The no identification division being attached on bonding film 2.Identification part 32d can be coloured or with label.In addition, in protection resin film 32 With at least in any one, identification part 32d is arranged in respective at least part in second adhesive phase 33.That is, knowing Other portion 32d can be located on at least whole region of any one in protection resin film 32 and second adhesive phase 33, It can be located at least a part of any one in protection resin film 32 and second adhesive phase 33.
For example, being illustrated the composition that identification part 32d is set to the whole region of protection resin film 32 in Fig. 1 (b).Know Other portion 32d may also set up in a part of protection resin film 32.Such as the color of the identification part 32d through colouring is set as The b* value of Lab color specification system is -30 or more -10 or less.The color of identification part 32d is, for example, blue.For example, protection can also be used The whole region or a part of resin film 32 are colored as blue.Here, if the b* value of identification part 32d is less than -30, identification part The blue of 32d deepens, and the inspection through the adhesive tape 1 or graphite flake of protective glue band 35 becomes difficult, thus not preferred.Another party Face, if the b* value of identification part 32d is greater than -10, the blue of identification part 32d shoals, and is easy to happen and forgets to remove protective glue band 35 The case where, it is thus not preferred.In addition, with markd identification part 32d have coloring text, concave-convex text, it is color patterned, concave-convex Decorative pattern etc..For example, can be on the whole region of protection resin film 32 or a part with label.
The total light transmittance of protective glue band 35 may be set to 65% or more 80% or less.If the total light transmittance of protective glue band 35 is small In 65%, then the layer (for example, adhesive tape or graphite flake) being difficult to below visual confirmation protective glue band 35, to penetrate protective glue band Inspection for the purpose of the defect of layer below 35 pairs of protective glue bands 35 confirms becomes difficult, thus not preferred.On the other hand, If the total light transmittance of protective glue band 35 be greater than 80%, in the presence of can not confirm protective glue band 35 there are the case where, with craft When operation removing protective glue band 35, there are forget a possibility that removing protective glue band 35.
Relative to the overall thickness for the first adhesive phase 20 and resin film 11 for constituting adhesive tape 1, the thickness of protective glue band 35 Degree is set to 1 times or more 20 times hereinafter, being preferably set to 10 times or more 20 times or less.Here, being further provided with coloring layer When at least one of 12 and roughened layer 15, overall thickness refers to be added on the thickness of first adhesive phase 20 and resin film 11 The thickness of the thickness of at least one of coloring layer 12 and roughened layer 15；It is being equipped with both coloring layer 12 and roughened layer 15 When, overall thickness refers on the thickness of first adhesive phase 20 and resin film 11 plus both coloring layer 12 and roughened layer 15 Thickness thickness.
If the thickness of protective glue band 35 is thinner than above-mentioned overall thickness, since the rigidity of protective glue band 35 is weak, protective glue is had The rigidity of the adhesive tape 1 of band dies down.As a result, when the adhesive tape 1 for having protective glue band is attached at the surface of graphite flake, It is easy to generate fold or relaxation on adhesive tape 1.On the other hand, if the thickness of protective glue band 35 is greater than the 20 of above-mentioned overall thickness Times, then since the rigidity of protective glue band 35 is strong, the rigidity of the adhesive tape 1 with protective glue band becomes strong.Guarantor will had as a result, When the adhesive tape 1 of retaining tape is attached at graphite flake, air is mixed between graphite flake and first adhesive phase 20, thus Not preferably.
The Young's modulus of protective glue band 35 is 2000MPa or more, is preferably set as 4500MPa or less.If protective glue band 35 Young's modulus is less than 2000Mpa, then the rigidity of protective glue band 35 dies down, and pastes by the adhesive tape 1 for having protective glue band When investing graphite flake, fold or relaxation are generated on adhesive tape 1 or protective glue band 35 stretches and causes to misplace, because without excellent Choosing.On the other hand, if the Young's modulus of protective glue band 35 is greater than 4500Mpa, the rigidity of protective glue band 35 becomes strong, will have When the adhesive tape 1 of protective glue band is attached at graphite flake, it is mixed into air between graphite flake and first adhesive phase 20, because Without preferred.
In protective glue band 35, protection resin film 32 may be set to by the flexibility that Ge Erlai is tested 0.1mN/25mm or more 2mN/25mm or less.If the flexibility of protection resin film 32 is less than 0.1mN/25mm, protective glue band 35 rigidity dies down, and when the adhesive tape 1 for having protective glue band is attached at graphite flake, generates fold on adhesive tape 1 Or loose or protective glue band 35 stretches and causes to misplace, it is thus not preferred.On the other hand, if the protection softness of resin film 32 Property be greater than 2mN/25mm, then the rigidity of protective glue band 35 becomes strong, and the adhesive tape 1 for having protective glue band is being attached at graphite flake When, air is mixed between graphite flake and first adhesive phase 20, it is thus not preferred.
In the present embodiment, the protective glue with such desired thickness, Young's modulus and flexibility is being used When band 35, the characteristic of protective glue band 35 is followed, the appropriate respective spy for adjusting second adhesive phase 33 and first adhesive phase 20 Property.
By the second adhesive phase 33 in protective glue band 35 to the bonding force (180 degree disbonded test) of stainless steel (SUS) plate It is set as 5mN/25mm or more 300mN/25mm hereinafter, being preferably set to 5mN/25mm or more 100mN/25mm hereinafter, more preferably It is set as 15mN/25mm or more 50mN/25mm or less.If protective glue band 35 is less than 5mN/25mm to the bonding force of stainless steel plate, Then protective glue band 35 is easy to remove from the surface of adhesive tape 1, thus not preferred.On the other hand, if protective glue band 35 is not to The bonding force of rust steel plate is greater than 300mN/25mm, then protective glue band 35 is not removed from the surface of adhesive tape 1, because without excellent Choosing.
(peel angle is 180 ° to bonding force by the second adhesive phase 33 in protective glue band 35 to adhesive tape 1, removing Speed is 300mm/ minutes) it is set as 5mN/25mm or more 100mN/25mm hereinafter, being preferably set to 7mN/25mm or more 33mN/ 25mm or less.In addition, to the bonding force of adhesive tape 1, (peel angle is by the second adhesive phase 33 in protective glue band 35 90 °, peeling rate be 1m/ minutes) be set as 10mN/25mm or more 500mN/25mm hereinafter, be preferably set to 50mN/25mm with Upper 160mN/25mm or less.
If protective glue band 35 is less than 5mN/25mm, protective glue to the bonding force (peel angle is 180 °) of adhesive tape 1 It is easy to remove from the surface of adhesive tape 1 with 35, it is thus not preferred.On the other hand, if protective glue band 35 is to adhesive tape 1 Bonding force (peel angle is 180 °) is greater than 100mN/25mm, then protective glue band 35 is not removed from the surface of adhesive tape 1, because Without preferred.In addition, if protective glue band 35 is less than 10mN/25mm to the bonding force (peel angle is 90 °) of adhesive tape 1, Protective glue band 35 is easy to remove from the surface of adhesive tape 1, thus not preferred.On the other hand, if 35 pairs of protective glue band bondings The bonding force (peel angle is 90 °) of adhesive tape 1 is greater than 500mN/25mm, then protective glue band 35 is not from the surface of adhesive tape 1 Removing, it is thus not preferred.
Second adhesive phase 33 in protective glue band 35 to the bonding force (peel angle is 90 °) of adhesive tape 1 relative to Second adhesive phase 33 in protective glue band 35 to the bonding force (peel angle is 180 °) of adhesive tape 1, may be set to 1 times with Upper 10 times or less.If protective glue band 35 is less than 35 pairs of protective glue band bondings to the bonding force (peel angle is 90 °) of adhesive tape 1 1 times of the bonding force (peel angle is 180 °) of adhesive tape 1, then for example in the punch press process process of protective glue band 35, will add When work punching blade lifts from protective glue band 35, protective glue band 35 is easy while lifting processing punching blade from viscous It closes and is removed on the surface of adhesive tape 1, it is thus not preferred.On the other hand, if bonding force (removing of the protective glue band 35 to adhesive tape 1 Angle is 90 °) be greater than protective glue band 35 to 10 times of the bonding force (peel angle is 180 °) of adhesive tape 1, then from bonding When the sur-face peeling protective glue band 35 of adhesive tape 1, the layer below protective glue band 35 is stripped together with protective glue band 35, because without excellent Choosing.
In protective glue band 35, the surface free energy γ d of second adhesive phase 33 may be set to 15mJ/m2The above 30mJ/m2 Below.If the surface free energy γ d of second adhesive phase 33 is less than 15mJ/m2, then the surface tension mistake of second adhesive phase 33 Weak, the adherence on the surface of second adhesive phase 33 and adhesive tape 1 is deteriorated, thus not preferred.If second adhesive phase 33 Surface free energy γ d is greater than 30mJ/m2, then the surface tension of second adhesive phase 33 is too strong, second adhesive phase 33 and bonding The adherence on the surface of adhesive tape 1 is deteriorated, thus not preferred.Second adhesive phase 33 with such surface free energy for example containing Have in organosilicon (silicone) resin and carbamate resins at least any one.
In addition, peeling protective glue band off from adhesive tape 1 in the bonding film 3 with protective glue band shown in Fig. 1 (b) When 35, the surface of adhesive tape 1 is exposed.
When being equipped at least one of roughened layer 15 and coloring layer 12, the upper table of roughened layer 15 (or coloring layer 12) The arithmetic average roughness Ra in face can be 0.1 μm or more, preferably 0.1 μm or more 1.0 μm hereinafter, more preferably 0.2 μm with Upper 0.5 μm or less.The average height Rc of the roughness curve element of roughened layer 15 (or coloring layer 12) is 0.5 μm or more, excellent Be selected as 0.5 μm or more 2.0 μm hereinafter, more preferably 0.8 μm or more 1.8 μm hereinafter, more preferably 1.0 μm or more 1.5 μm or less. 10 mean roughness Rzjis of roughened layer 15 (or coloring layer 12) be 1.0 μm or more, preferably 1.0 μm or more 9.0 μm with Under, more preferably 2.0 μm or more 7.0 μm hereinafter, more preferably 2.5 μm or more 5.0 μm or less.
In addition, can directly be contacted between the adjacent layer of Z-direction in the bonding film 3 with protective glue band, it can also With mediate contact.In the case where mediate contact, it can also accompany and be improved in adherence etc. between the adjacent layer of Z-direction Interbed (not shown).In addition, each layer in the bonding film 3 with protective glue band can be single layer, can also be made up of multiple layers.
In the bonding film 3 with protective glue band, the thickness of stripping film 30 can be for 20 μm or more 80 μm hereinafter, preferably 20 μm or more 50 μm or less.
First adhesive phase 20 with a thickness of 1 μm or more 5 μm hereinafter, preferably 1 μm or more 3 μm or less.If the first bonding The thickness of oxidant layer 20 is less than 1 μm, then first adhesive phase 20 is low with the adherence of graphite flake, exists and is difficult to the graphite flake that adequately protects The case where.If the thickness of first adhesive phase 20 is more than 5 μm, adhesive tape 1 thickens, and is unsatisfactory for the requirement of slimming.
The thickness of resin film 11 can be for 1 μm or more 6 μm hereinafter, preferably 1 μm or more 3 μm or less.If the thickness of resin film 11 Degree is less than 1 μm, then the intensity of resin film 11 is lower, and carries out transport by roll-to-roll mode and becomes difficult.If the thickness of resin film 11 Degree is more than 6 μm, then adhesive tape 1 thickens, and is unsatisfactory for the requirement of slimming.
The thickness of coloring layer 12 may be, for example, 0.5 μm or more 5 μm hereinafter, preferably 0.8 μm or more 3 μm or less.If coloring The thickness of layer 12 is less than 0.5 μm, then resin film 11 and the adherence of coloring layer 12 are lower, and there are coloring layers 12 from resin film 11 The case where removing.In addition, adhesive tape 1 thickens if the thickness of coloring layer 12 is more than 5 μm, it is unsatisfactory for the requirement of slimming.
The thickness of roughened layer 15 for example can be 0.5 μm or more 5 μm hereinafter, preferably 0.6 μm or more and 3 μm hereinafter, More preferably 0.8 μm or more 2 μm or less.If the thickness of roughened layer 15 cannot get desired concaveconvex structure less than 0.5 μm Face；If the thickness of roughened layer 15 is more than 5 μm, bonding film 2 thickens, and is unsatisfactory for the requirement of slimming.
The thickness of second adhesive phase 33 can be 3 μm or more 50 μm or less.The thickness of protection resin film 32 can be 25 μm or more 200 μm or less.
Hereinafter, being attached at 31/ double faced adhesive tape of stripping film to by the adhesive tape 1 with protective glue band for peeling stripping film 30 off The structure of heat transmission sheet material made of on the laminated body of 101/ graphite flake 100 is illustrated.
Fig. 2 (a) is the stereoscopic schematic diagram of the heat transmission sheet material of present embodiment.Fig. 2 (b) is the heat transmission of present embodiment The diagrammatic cross-section of sheet material.
Heat transmission sheet material 60 has adhesive tape 1, graphite flake 100, double faced adhesive tape 101, stripping film 31 and protective glue band 35.Fig. 2 (b) instantiates the attached adhesive tape 1 for being provided with roughened layer 15 and coloring layer 12.It is pasted with such adhesive tape The fabrication yield of 1 graphite flake 100 is improved.
Double faced adhesive tape 101 has adhesive phase 101a, 101c and resin film 101b.Resin film 101b is set to adhesive phase Between 101a and adhesive phase 101c.In the example of Fig. 2 (b), heat transmission sheet material 60 is by 31/ double faced adhesive tape of stripping film, 101/ stone 100/ adhesive tape of ink sheet, 1/ protective glue band 35 stacks gradually.Here, the area folded by stripping film 31 and protective glue band 35 In the S1 of domain, it is equipped with 101/ graphite flake of double faced adhesive tape, 100/ adhesive tape 1.
Double faced adhesive tape 101 is set to the surface of stripping film 31.Double faced adhesive tape 101 is set to stripping film 31 and graphite flake 100 Between.Graphite flake 100 is set between double faced adhesive tape 101 and adhesive tape 1.Adhesive tape 1 is set to graphite flake 100 and protection Between adhesive tape 35.Protective glue band 35 is set to the surface with 100 opposite side of graphite flake of adhesive tape 1.
In addition, protection is equipped with label portion 32t and pin hole line 32p with resin film 32.It, can be in protection in resin film 32 Pin hole line 32p is basic point folding tag portion 32t.Label portion 32t can be easily grabbed as a result, it can be using label portion 32t as starting point Protective glue band 35 is removed from adhesive tape 1.
In the example of Fig. 2 (a), the flat shape of label portion 32t is trapezoidal.The flat shape of label portion 32t can be Triangle is also possible to semicircle.Further, notch can also be added on label portion 32t.In this way, by making label portion 32t Shape it is eye-catching, can be using label portion 32t as identification part 32d.
Adhesive tape 1 can set the bonding force of graphite flake 100 (peel angle is 180 °, and peeling rate is 300mm/ minutes) It is set to 100mN/25mm or more 1000mN/25mm or less.If adhesive tape 1 is to the bonding force of graphite flake 100, (peel angle is 180 °) be less than 100mN/25mm, even if adhesive tape 1 is then attached at graphite flake 100, also will appear first adhesive phase 20 from When removing on graphite flake 100 or removing protective glue band 35 from adhesive tape 1, first adhesive phase 20 is become easy from stone The case where being removed on ink sheet 100, it is thus not preferred.If adhesive tape 1 is to the bonding force of graphite flake 100 (peel angle is 180 °) It, then, can not be from the graphite attached when wanting to attach the adhesive tape 1 for having protective glue band again greater than 1000mN/25mm On piece removing, it is thus not preferred.
In addition, protective glue band 35 is adhesive tape 1 to graphite flake to the bonding force (peel angle is 180 °) of adhesive tape 1 0.02 times or more 0.5 times or less of 100 bonding force (peel angle is 180 °).
For example, protective glue band 35 to the bonding force of adhesive tape 1 (peel angle is 180 °) relative to adhesive tape 1 to stone The bonding force (peel angle is 180 °) of ink sheet 100 may be set to 0.02 times or more 0.5 times hereinafter, it is preferred that can be also 0.03 times Above 0.15 times or less.If protective glue band 35 is to the bonding force (peel angle is 180 °) of adhesive tape 1 relative to adhesive tape 1 To the bonding force of graphite flake 100 (peel angle is 180 °) less than 0.02 times, then protective glue band 35 is easy the table from adhesive tape 1 It is removed on face, it is thus not preferred.If protective glue band 35 is to the bonding force (peel angle is 180 °) of adhesive tape 1 relative to bonding Adhesive tape 1 is greater than 0.5 times to the bonding force of graphite flake 100 (peel angle is 180 °), then by protective glue band 35 from adhesive tape 1 Sur-face peeling when, protective glue band 35 is not removed from adhesive tape 1, and is easy in first adhesive phase 20 and graphite flake 100 Between it is peeling-off.Agglutination destruction occurs for graphite flake 100 as a result, thus not preferred.
In addition, protective glue band 35 can have the area (Fig. 2 (a)) of the area greater than region S1 in heat transmission sheet material 60. Double faced adhesive tape 101, graphite flake 100, adhesive tape 1 are configured in the S1 of region.In the S1 of region, the area of adhesive tape 1 is big In the area of graphite flake 100.Here, on an x-y plane, the length that adhesive tape 1 exposes from graphite flake 100 is, for example, 2mm. In addition, on an x-y plane, protective glue band 35 from the length that region S1 exposes be, for example, 2mm.
That is, protective glue band 35 is greater than the area of graphite flake 100, adhesive tape 1.As a result, protective glue band 35 covers graphite Piece 100 inhibits the missing of graphite flake 100, graphite powder to fall off.
Fig. 3 is that the section in the state that the graphite flake with adhesive tape of present embodiment is attached on shell shows It is intended to.
As shown in figure 3, peeling the stone with adhesive tape of stripping film 31 and protective glue band 35 off from heat transmission sheet material 60 Ink sheet 100 is attached at shell 102 via double faced adhesive tape 101.Peel the thickness of the adhesive tape 1 of stripping film 31 and protective glue band 35 off Degree is 10 μm or so.Adhesive tape 1 is constituted as a result, in very thin mode.In the condition shown in figure 3, in the upper of adhesive tape 1 When side is configured with heat source (such as electronic component), by the heat of heat source release via adhesive tape 1 to reaching graphite flake 100.
As described above, adhesive tape 1 forms very thin.As a result, from above adhesive tape 1 heat source discharge heat be not easy by Adhesive tape 1 interdicts, and can certainly arrive and reach graphite flake 100.To reach graphite flake 100 heat in graphite flake 100 along Z axis Direction diffusion, while also being spread along the x axis with Y direction.The heat distributed as a result, from electronic component is effectively radiated.
Further, since adhesive tape 1 is very thin, therefore can be in the case where not interfering the inner space of small-sized electronic product It is configured in electronic product.Further, when being further provided with roughened layer 15 in the adhesive tape 1 with coloring layer 12, stone The gloss of ink sheet 100 is suppressed, and the appearance of graphite flake 100 can be made to become unglazed style.
In addition, in adhesive tape 1, in first adhesive phase 20, resin film 11, coloring layer 12 and roughened layer 15 at least One can contain colorant.Colorant is not particularly limited, such as can enumerate carbon black, titanium oxide, calcium carbonate, barium sulfate, Huang Iron oxide, red ferric oxide, cyanine blue, aluminium powder, mica titanium valve etc..In addition, first adhesive phase 20, tree before being mixed into colorant For example, colorless and transparent, white translucent of the color of adipose membrane 11, coloring layer 12 and roughened layer 15 etc..
The material of each layer in bonding film 3 with protective glue band, the measuring method of physics value are as described below.
[bonding film (removing protective glue band)]
< resin film >
The resin types for being used in resin film are not particularly limited, such as can enumerate by polyethylene terephthalate The polyester film that the polyester such as ester, polybutylene terephthalate (PBT), polyethylene naphthalate are formed；Polyurethane film, polyethylene The cellulose membranes such as film, polypropylene screen, Triafol T；Polychloroethylene film, polyvinylidene chloride film, polyvinyl alcohol film, ethylene- Vinyl acetate copolymer film, polystyrene film, polycarbonate membrane, acrylic resin film, norbornene resin film, cycloolefin The resin films such as resin film；The laminated body etc. being made of these two or more resin films.Resin film can be through uniaxial extension or double The film that axis stretches.Wherein, from filming and the precision of required thickness, surface smoothness, the difficulty of acquisition angularly It sets out, preferably polyester film.As polyester film, various polyester films can be used, specifically, the poly- terephthaldehyde that for example can be used alone Sour glycol ester (PET) film, polyethylene naphthalate (PEN) film, polybutylene terephthalate (PBT) (PBT) film, or It can be used film made of the copolymerization of these films.Particularly preferably PET film.In addition, from dimensional stability and the angle of intensity, Polyester film preferably passes through biaxial stretch-formed film.Wherein, preferably pass through biaxial stretch-formed PET film.
< coloring layer >
When being equipped with coloring layer, as long as the color of electronic component that coloring layer cooperation adhesive tape is attached or to reconcile Color coloured, be not particularly limited, from concealment angularly, preferably black.
Coloring layer preferably comprises coloured material and binder resin.As binder resin, such as amino first can be enumerated Acid ester resin, epoxy resin, polyester resin, polyester urethane resin etc..These binder resins can be used alone, It can be simultaneously using two or more.Wherein, since flexibility is excellent, preferred polyester urethane resin.Above-mentioned polyester Carbamate resins preferred glass transition temperature (Tg) is -30~10 DEG C.
Coloring layer is preferably solidified by curing agent.Curing agent is not particularly limited, and binder resin can be cooperated to be fitted Work as selection.When binder resin is polyester urethane resin, as curing agent, such as cured with isocyanates can be enumerated Agent etc..In addition, can be used amine hardener as solid when hydroxyl or isocyanate group are present in polyester urethane resin Agent.These curing agent can be used alone, can also be simultaneously using two or more.
As coloured material, known usual pigments or dyes can be used.When coloring layer is black, such as can enumerate Carbon black；When coloring layer is white, such as titanium oxide, calcium carbonate, barium sulfate can be enumerated；When coloring layer is yellow, such as Yellow ferric oxide can be enumerated；When coloring layer is red, such as red ferric oxide can be enumerated；When coloring layer is blue, such as Cyanine blue can be enumerated；When coloring layer is silver color, such as aluminium powder can be enumerated；When coloring layer is pearl, such as can arrange Enumerate mica titanium valve etc..Wherein, since the concealment of carbon black is excellent, so it is preferred that.The content of coloured material in coloring layer does not have It is particularly limited to, can be appropriately configured according to concealment as a purpose etc..For example, coloring layer preferably comprises binder tree Rouge and relative to 100 mass parts binder resin be 10 mass parts more than 70 coloured material below the mass.
Coloring layer can also further contain transparent resin (medium), antioxidant, ultraviolet absorbing agent, light as needed The additives such as stabilizer.
< adhesive phase >
It as the adhesive for the adhesive phase for forming adhesive tape, is not particularly limited, such as can be viscous from acrylic compounds Mixture, rubber adhesive, silicone adhesive category, carbamates adhesive, polyester adhesive, styrenic-diene It is suitably selected and is used in adhesive well known to block copolymerization species adhesive etc..Adhesive can be used alone, can also It is two or more to be applied in combination.
It, can be it is preferable to use since Cohesion reliability is high as adhesive, especially acrylic adhesives. Acrylic adhesives are using acrylic polymer as adhesiveness ingredient or host agent, on this basis, contain as needed The additive appropriate such as crosslinking agent, tackifier, softening agent, plasticizer, filler, age resister, colorant.Acrylic Object is using (methyl) alkyl acrylate as the polymer of monomer main component, as needed, by using can be with (methyl) Monomer (co-polymerized monomer) that alkyl acrylate is copolymerized and prepare.As (methyl) alkyl acrylate, such as can arrange Enumerate (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (first Base) butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) Amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid -2- Ethylhexyl, (methyl) Isooctyl acrylate monomer, (methyl) nonyl acrylate, the different nonyl ester of (methyl) acrylic acid, (methyl) acrylic acid Last of the ten Heavenly stems ester, (methyl) isodecyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate, (methyl) Tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) acrylic acid ten Six Arrcostabs, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, (methyl) acrylic acid nonadecyl (methyl) acrylic acid C1-20 Arrcostab [preferably (methyl) acrylic acid C4-18 alkane such as ester, (methyl) acrylic acid eicosane base ester Base (alkyl of straight-chain or branched) ester] etc..(methyl) alkyl acrylate can be fitted according to adhesiveness as a purpose etc. Work as selection.
In addition, as the co-polymerized monomer that can be copolymerized with (methyl) alkyl acrylate, such as can enumerate The carboxyl group-containing monomers such as (methyl) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, iso-crotonic acid or its acid anhydrides out；Ethylene The monomers containing sulfonic group such as base sodium sulfonate；The aromatic ethenyl compounds such as styrene, substituted phenylethylene；The cyano-containings list such as acrylonitrile Body；The olefines such as ethylene, propylene, butadiene；The vinyl esters such as vinyl acetate；Vinyl chloride；Acrylamide, methacryl Amine, n-vinyl pyrrolidone, N, the amide-containings monomer such as N- dimethyl (methyl) acrylamide；(methyl) dihydroxypropyl alkane The hydroxyls monomer such as base ester, glycerol dimethacrylate；(methyl) acrylate, (methyl) acryloyl morpholine etc. contain Amino monomers；The monomers containing imide such as N-cyclohexylmaleimide, isopropylmaleimide；(methyl) acrylic acid shrinks sweet Grease, (methyl) acrylic acid methylglycidyl esters etc. contain epoxy based monomers；2- methyacryloxyethyl isocyanates etc. Monomer containing isocyanate group and triethylene glycol two (methyl) acrylate in addition to this, diethylene glycol two (methyl) propylene Acid esters, ethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylic acid Ester, 1,6-hexylene glycols two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl) third Multi-functional co-polymerized monomer (the polyfunctionality list such as olefin(e) acid ester, dipentaerythritol six (methyl) acrylate, divinylbenzene Body) etc..Co-polymerized monomer may be used alone or in combination using two or more.As co-polymerized monomer, preferably using with hydroxyl The modification monomer of the functional groups such as base or carboxyl.
(methyl) alkyl acrylate copolymer preferably comprises 0.1~20 mass %, particularly preferably contains 1~10 mass % The modification monomer with functional group.
The weight average molecular weight of (methyl) alkyl acrylate copolymer is preferably 200000~2000000, particularly preferably 500000~1500000.In addition, the weight average molecular weight in this specification is poly- to be measured by gel permeation chromatography (GPC) method Styrene scaled value.
As crosslinking agent, as long as to be reacted with reactive group possessed by (methyl) alkyl acrylate copolymer Crosslinking agent, such as isocyanates crosslinking agent, epoxies crosslinking agent, amine cross-linking agent, melamine class can be enumerated Crosslinking agent, aziridines crosslinking agent, hydrazine crosslinking agent, aldehyde crosslinking agent, oxazoline class crosslinking agent, metal alkoxide class crosslinking agent, Metal-chelating species crosslinking agent, metallic salt crosslinking agent, ammonium salt class crosslinking agent etc., wherein it is preferred that reactivity with hydroxyl and carboxyl Excellent isocyanates crosslinking agent.Crosslinking agent can be used alone one kind, or be applied in combination two or more.
Isocyanates crosslinking agent at least contains polyisocyanate compounds.As polyisocyanate compounds, such as can Enumerate the aromatic series polyisocyanate such as toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, benzene dimethylene diisocyanate Ester；The aliphatic polymeric isocyanates such as hexamethylene diisocyanate；Isophorone diisocyanate, two isocyanide of hydrogenated methylene diphenyld The biuret body of ester ring types polyisocyanate such as acid esters etc. and these compounds, isocyanuric acid ester body, and as with second two The adduct of the reactant of the low molecules active hydrogen-contg compound such as alcohol, propylene glycol, neopentyl glycol, trimethylolpropane, castor oil Deng, wherein from the reactive angle of the reactive group with (methyl) acrylate polymers, preferably three hydroxyl first The modified aromatic poly-isocyanate of base propane, the modified benzene dimethylene diisocyanate and three of particularly preferred trimethylolpropane Hydroxymethyl-propane modified toluene diisocyanate.
Relative to (methyl) alkyl acrylate copolymer of 100 mass parts, the blended amount of crosslinking agent is preferably 0.1~20 Mass parts, particularly preferably 1~10 mass parts.If the blended amount of crosslinking agent is easy in above-mentioned range by aftermentioned bonding The gel fraction of agent controls in preferred range.
In addition, further preferably adding tackifying resin to improve the bonding force of adhesive phase.Further, since by adding this A little tackifying resins can be improved tensile strength or tensile break strength, therefore by according to used acrylic copolymer And it is properly added tackifying resin, tensile strength or tensile break strength can be adjusted.As the bonding for making an addition to the utility model The rosin resinoids such as the tackifying resin in the adhesive phase of adhesive tape, such as ester compounds that rosin or rosin can be enumerated；Diterpene The terpenoid resins such as alkene polymer or australene-phenol copolymer；The petroleum such as aliphatic category (C5 class) or aromatic (C9 class) Resin；And styrene resin, phenolic resin, xylene resin in addition to this etc..Wherein, it is using with (methyl) third In adhesive composition of the olefin(e) acid N-butyl as the acrylic copolymer of main monomer component, slim, bonding force is being taken into account When with heat resistance, carried out after preferably mixing rosin resinoid with styrene resin using.
In addition, adhesive phase can according to need and inhale containing silane coupling agent, antistatic agent, antioxidant, ultraviolet light Receive agent, light stabilizer, softening agent, filler, adjustable refractive index agent, dyestuff, pigment, antirust agent etc..
< stripping film >
The peeling agent layer that stripping film preferably has film base material and is set on the film base material.As film base material, can enumerate It is formed by polyester such as polyethylene terephthalate, polybutylene terephthalate (PBT), polyethylene naphthalate poly- Ester film, the polyolefin film formed by polyolefin such as polyethylene, polypropylene, polymethylpentenes, polycarbonate membrane, polyvinyl acetate Any one in the plastic foils such as film or the laminated body etc. that is formed by two or more material layer therein.
Peeling agent layer is for example formed by the solidfied material of the peeling agent layer formation composition containing remover.As remover Layer, which is formed, uses composition, as long as peeling agent layer can be assigned to remove the random layer being laminated on peeling agent layer from stripping film Function, be not particularly limited.As remover, such as organic siliconresin, chain alkyl resin and alkyd tree can be enumerated Rouge etc..
As organic silicon remover, it is solid that addition reaction-type organosilicon, condensation reaction type organosilicon, energy line can be enumerated The property changed organosilicon.It, can also be by the dimethyl silicone polymer of no degree of functionality, phenyl modified organic in addition, in order to adjust peeling force Silicon, organic siliconresin, silica, cellulose compound are used as additive.
The roughened layer > of <
When being equipped with roughened layer, roughened layer can also be by carrying out the method for roughening treatment, making and contain inorganic particle And at least method of the layer of any one etc. in organic granular adjusts roughness etc..As the side for carrying out roughened processing Method, can enumerate and carry out the method for Corona discharge Treatment, blasting treatment, coarse roll surface is crimped on the surface of upper surface to Transfer the method etc. of the roughness of roll surface.In addition it is also possible to by making in roughened layer to adjust above-mentioned roughness containing particle Deng.
Wherein, roughened layer preferably comprise in inorganic particle and organic granular at least any one, further preferably without Machine particle or organic granular and binder resin.By the average grain diameter, the blended amount that adjust inorganic particle and/or organic granular Deng above-mentioned roughness etc. can be easily adjusted.The average grain diameter of inorganic particle and/or organic granular can be greater than roughened layer Thickness.
As binder resin, such as carbamate resins, epoxy resin, polyester resin, Amino-Polyester can be enumerated Formate resin etc..These binder resins can be used alone, can also be simultaneously using two or more.Wherein, due to softness Property it is excellent, therefore preferably carbamate resins, polyester resin, polyester urethane resin.
Roughened layer can be solidified by curing agent.Curing agent is not particularly limited, and binder resin can be cooperated to carry out Appropriate selection.When binder resin is polyester urethane resin, as curing agent, such as isocyanates can be enumerated and consolidated Agent etc..In addition, amine hardener conduct can be used when hydroxyl or isocyanate group are present in polyester urethane resin Curing agent.These curing agent can be used alone, can also be simultaneously using two or more.In addition, according to required, in roughened layer Contain the additives such as antioxidant, ultraviolet absorbing agent, the light stabilizer being again included in coloring layer.
< particle >
Organic granular is not particularly limited, such as can enumerate the acrylic resins such as poly methyl methacrylate particle Grain, granules of polystyrene, polycarbonate pellets, carbamate resins pearl, epoxy bead, polyester resin pearl, Amino-Polyester Formate resin pearl etc..These organic granulars can be used alone, can also be simultaneously using two or more.
It as inorganic particle, is not particularly limited, such as silica (SiO can be enumerated2), barium sulfate (BaSO4), oxygen Change titanium, in the particles such as calcium carbonate at least any one.These inorganic particles can be used alone, and can also use two kinds simultaneously More than.Wherein, the angle of the difficulty of the difficulty and acquisition that are adjusted from granularity, preferably silica, barium sulfate (BaSO4) or silica and barium sulfate (BaSO4) mixture.
The volume ratio ([volume of silica]: [volume of barium sulfate]) of silica and barium sulfate is controlled in 100:50 To 100:500.In addition, the binder resin relative to 100 mass parts, adds 60 mass parts or more and 150 mass In part below silica and barium sulfate at least any one.
The average grain diameter of above-mentioned particle is not particularly limited, but preferably 0.5 μm or more 10 μm hereinafter, more preferably 1 μm Above 5 μm hereinafter, further preferably 1.5 μm or more 3 μm or less.When above-mentioned average grain diameter beyond above range when, due to It is not easy to be adjusted in the range of the average height (Rc) of required roughness curve element, it is thus not preferred.
In addition, refer to will be using the peak value that coulter counter method measures as average grain diameter for average grain diameter.In roughened layer 15 Inorganic particle and organic granular can also be mixed.
[protective glue band]
< protection resin film >
It as protection resin film, can enumerate: by polyethylene terephthalate, polybutylene terephthalate The polyester film that the polyester such as ester, polyethylene naphthalate are formed, by the polyolefin shape such as polyethylene, polypropylene, polymethylpentene At polyolefin film, in the plastic foils such as polycarbonate membrane, polyvinyl acetate film any one or by therein two or more The laminated body etc. that is formed of material layer.
< adhesive phase >
As the adhesive for the adhesive phase for forming protective glue band, it is not particularly limited, such as can be from acrylic adhesive Agent, rubber adhesive, silicone adhesive category, carbamates adhesive, polyester adhesive, styrenic-diene are embedding It is suitably selected and is used in adhesive well known to section copolymer analog adhesive etc..It is preferable to use silicone adhesive categories, ammonia Carbamate class adhesive.
< adhesive phase (silicone adhesive layer) >
As silicone adhesive category, the adhesive of any suitable can be used.As silicone adhesive category, such as preferably Use the organic silicon bonding using the organic silicon rubber containing organopolysiloxane or organic siliconresin etc. as basic polymer Agent.As the base polymer for constituting silicone adhesive category, it is possible to use hand over organic silicon rubber or organic siliconresin Base polymer obtained from connection.
As organic silicon rubber, such as organic poly- silicon oxygen containing the dimethyl siloxane as structural unit can be enumerated Alkane etc..Functional group (such as vinyl) can also be imported as needed in organopolysiloxane.Organopolysiloxane is divided equally again Son amount preferably 100000~1000000, more preferably 150000~500000.Weight average molecular weight can by GPC (solvent: THF it) is measured.
As organic siliconresin, for example, can enumerate containing selected from R3SiO1/2 structural unit, SiO2 structural unit, (R is monovalent hydrocarbon to the organopolysiloxane of at least one of RSiO3/2 structural unit and R2SiO structural unit structural unit Or hydroxyl).
Organic silicon rubber can be used simultaneously with organic siliconresin.Organic silicon rubber and organosilicon tree in silicone adhesive The weight ratio (rubber: resin) of rouge is preferably 100:0~100:220, more preferably 100:0~100:180, further preferably 100:10~100:100.The content of organic siliconresin is more, then the adhesiveness and retentivity of silicone adhesive category increase.Have Machine silicon rubber and organic siliconresin can be only contained in silicone adhesive category as mixture, can also with organic silicon rubber with Organic siliconresin carries out the form of partial condensates and is contained in silicone adhesive category.In addition, in silicone adhesive category The weight ratio of organic silicon rubber and organic siliconresin can be measured by 29Si-NMR, pass through the peak area ratio of Q unit and D unit (organic silicon rubber: organic siliconresin=D unit: Q unit) is found out.
Silicone adhesive category preferably comprises crosslinking agent.As the crosslinking agent contained in silicone adhesive category, such as can Enumerate type siloxane crosslinking agent, peroxide crosslinking agent etc..As peroxide crosslinking agent, the friendship of any suitable can be used Join agent.As peroxide crosslinking agent, such as benzoyl peroxide, peroxidized t-butyl perbenzoate, peroxidating can be enumerated Diisopropylbenzene (DIPB) etc..As type siloxane crosslinking agent, such as poly- organohydrogensiloxanes can be enumerated etc..The poly- organohydrogensiloxanes are excellent Choosing has more than two hydrogen atoms being incorporated on silicon atom.In addition, the poly- organohydrogensiloxanes preferably have alkyl, benzene Base, halogenated alkyl more preferably have as the functional group combined on the silicon atoms from the angle of the difficulty of synthesis and operation There is methyl.
< adhesive phase (urethane adhesive layer) >
It as urethane adhesive, is not particularly limited, such as below for -20 DEG C using glass transition point Urethane adhesive.Through glass transition point in above-mentioned range, adhesiveness can be played.In addition, differential will be passed through The glass transition point of scanning calorimeter measurement is as glass transition point.
As urethane adhesive, it can enumerate in the polyurethane such as polycarbonate-based, polyesters, polyethers, have Adhesiveness, glass transition point be -20 DEG C of adhesives below.Polycarbonate-based polyurethane by polycarbonate polyol with The reaction of polyisocyanate and obtain.Polyester-based polyurethane reacts to obtain by polyester polyol and polyisocyanate.It is poly- Ethers polyurethane reacts to obtain by polyether polyol and polyisocyanate.
As polycarbonate polyol, such as Isosorbide-5-Nitrae-tetramethylene type, 1,5- pentamethylene type, six Asia 1,6- can be enumerated Methyl type, 1,12- dodecane type, 1,4- hexamethylene type, mixed type of these polycarbonate polyols etc..
As polyester polyol, such as poly- (ethylene adipate) glycol, poly- (propylene adipate) can be enumerated Glycol, poly- (butylene adipate) glycol, poly- (hexa-methylene adipate ester) glycol, poly- (butylidene isophthalic acid ester) two Alcohol etc..
As polyether polyol, such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol and poly- (methyl butanediol) can be enumerated Deng.
In addition, 4,4 '-'-diphenylmethane diisocyanates, 2,4- toluene diisocynate can be enumerated as polyisocyanate The aromatic diisocyanates such as ester, 2,6- toluene di-isocyanate(TDI), xylylene diisocyanate；Hexa-methylene diisocyanate The aliphatic diisocyanates such as ester, trimethylene diisocyanate, tetramethylene diisocyanate；1,3- cyclopentene diisocyanate Alicyclic diisocyanates such as ester, 1,4- cyclohexane diisocyanate, isophorone diisocyanate etc..
By conventionally being reacted these substances, polycarbonate-based, polyesters or polyethers can be obtained Polyurethane.These polyurethane, which can be used alone, one kind or to be used in mixed way two or more.
Urethane adhesive can be by using the polyisocyanate compounds as crosslinking agent by above-mentioned polyurethane It is crosslinked and obtains.Wherein, as polyisocyanate compounds, adduct, the biuret of above-mentioned polyisocyanate can be enumerated Body or isocyanuric acid ester body etc..Urethane adhesive can also contain other compositions as needed.As other compositions, example The tackifier in the adhesive commonly used in releasable film, antioxidant, ultraviolet absorbing agent, light can be such as enumerated to stablize Agent, softening agent, silane coupling agent, filler etc..These ingredients can be used alone one kind, can also be used in mixed way two or more.
The weight average molecular weight of urethane adhesive for example can also be 50000~300000, for example, can also for 80000~ 200000, such as can also be 100000~180000.In the present specification, " weight average molecular weight ", which refers to, passes through gel permeation chromatography (GPC) the polystyrene scaled value of method measurement.
When urethane adhesive is dissolved in organic solvent, as organic solvent, such as can enumerate isopropanol, The alcohols such as n-butanol, isobutanol, the tert-butyl alcohol, diacetone alcohol；Methyl ethyl ketone, diethyl ketone, methylisobutylketone, cyclohexanone, diacetone alcohol Equal ketones；Dipropyl ether, butyl oxide, methyl phenyl ethers anisole, dioxanes, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, third The ethers such as glycol monomethylether acetate；Esters such as ethyl acetate, propyl acetate, butyl acetate, cyclohexyl acetate etc..
More specifically, urethane adhesive, urethane-modified third are added first into above-mentioned organic solvent Olefin(e) acid resin and other compositions as needed are simultaneously mixed, to prepare adhesive composition.
[measurement of thickness]
For the thickness measurement of each layer, film thickness gauge (the film thickness gauge Digimicro MH- of Nikon company manufacture can be used 15M) mechanicalness is found out.
[measurement of bonding force]
In the measurement of protective glue band 35 or the bonding force of adhesive tape 1, for SUS plate, under 23 DEG C, 50%RH environment Adhesive phase face paste is invested into stainless steel plate, after 24 hours, to carry out 180 ° of strippings on the basis of JIS Z 0237 under identical environment Separating test determines bonding force.For adhesive tape, adhesive phase face paste is invested into adhesive glue under 23 DEG C, 50%RH environment Band, after 24 hours, to carry out 180 ° of disbonded tests or 90 ° of disbonded tests, measurement on the basis of JIS Z 0237 under identical environment Bonding force.For graphite flake, adhesive phase face paste is invested into graphite flake under 23 DEG C, 50%RH environment, after 24 hours, in phase With 180 ° of disbonded tests are carried out under environment on the basis of JIS Z 0237, bonding force is determined.
Here, in 90 ° of disbonded test methods, using laminating machine (FUJIPLA Inc. is manufactured, ProductName LDP3214), Protective glue band is bonded with bonding film.Then, obtained sample is cut into wide 25mm, long 125mm, removes stripping film, it is fixed On SUS plate.Then, collet is installed in the front end for the line that the length as fixture for being set to cupping machine is 10cm, and It is fixed on top chuck.In addition, being become the SUS plate for being fixed with adhesive tape with the left end of sample away from lower chuck portion 8cm's The mode of position is fixed, and SUS plate is adjusted to 11cm at a distance from the chuck of top.Then, the right side of protective glue band is clamped with collet End, was removed with peeling rate 1m/ minutes, determines bonding force.At this point, by the end value of obtained record, (removing is tied The value of beam) it is used as measured value.
In addition, in 180 ° of disbonded test methods, using laminating machine (FUJIPLA Inc. is manufactured, ProductName LDP3214), Protective glue band is bonded with bonding film.Then, obtained sample is cut into wide 25mm, long 125mm, removes the removing of bonding film Film is simultaneously fixed on SUS plate.Then, so that protective glue band is carried out 180 ° of bendings, removed with peeling rate 0.3m/ minutes, surveyed Bonding force is determined.
[measurement of Young's modulus]
The measurement of Young's modulus as protective glue band 35 selects 200mm/ minutes as test speed, with JIS K- It is determined on the basis of 7127 (1999).
[measurement of flexibility]
As the protection measurement of the flexibility of resin film 32, using JIS L 1085 (1998) 6.10.3 Ge Erlaifa as base Standard is surveyed by rigid softness measurement device (TOYOSEIKI CO., LTD. manufacture, ProductName " Ge Erlaishi softness tester ") Pliability (unit: mN/25mm) is determined.
Fig. 4 (a) and Fig. 4 (b) is to indicate the adhesive tape with protective glue band of present embodiment fitting in graphite flake On manufacturing process a part schematic diagram.
Heat transmission sheet material 60 is manufactured in a manner of roll laminating by using laminating machine 600.Laminating machine 600 have supporting table 601, Roller mechanism 620.Roller mechanism 620 has pressing roller 602, deflector roll 603,604 and rolls out roller 611.Heat transmission sheet material 60 for example exists It is manufactured in atmosphere.
As shown in Fig. 4 (a), in supporting table 601, laminated body 110 is arranged in column-shaped along the y axis.Laminated body 110 be according to Laminated body made of 31/ double faced adhesive tape of secondary stacking stripping film, 101/ graphite flake 100.
It is wound with the bonding film 3 with protective glue band in advance on rolling out roller 611.Bonding film 3 with protective glue band is logical It crosses and rolls out the rotation of roller 611 and continuously released from rolling out roller 611.If the bonding film 3 with protective glue band is put from roller 611 is rolled out Out, then after rigid release, stripping film 30 is removed from the bonding film 3 with protective glue band.The stripping film 30 via deflector roll 603, 604 are directed to outside laminating machine 600.
On the other hand, the adhesive tape 1 with protective glue band for peeling stripping film 30 off is directed to pressing roller 602 and support Between platform 601, contacted with the laminated body 110 in supporting table 601.Further, viscous with protective glue band by pressing roller 602 Adhesive tape 1 is closed to be pressed against on the laminated body 110 in supporting table 601.As a result, by the in the adhesive tape 1 with protective glue band One adhesive phase 20 is laminated with the graphite flake 100 in laminated body 110.
In supporting table 601, multiple heat transmission sheet materials 60 are formed along the y axis.Fig. 4 (b) indicates dissipating before being singulated The heat perspective view of sheet material 60.Continuous heat transmission sheet material 60 is cut off along a1-a2 line.
In addition, label portion 32t passes through punch press process shape after protective glue band 35 is attached at the surface of adhesive tape 1 At.
In addition, in the present embodiment, in the process for forming heat transmission sheet material 60, in the bonding that will have protective glue band When adhesive tape 1 is attached on graphite flake 100, it is set as 1 times or more 20 times of thickness below using the overall thickness relative to adhesive tape 1 The protective glue band 35 of degree.In addition, Young's modulus is set to 2000MPa or more, preferably 4500MPa in protective glue band 35 Below.In addition, protection is 0.1mN/25mm or more 2mN/25mm with the flexibility tested by Ge Erlai with resin film 32 Mode below is constituted.Protective glue band 35 has required rigidity as a result, attaches by the adhesive tape 1 for having protective glue band When graphite flake 100, it can be avoided the fold of adhesive tape 1 or the generation of relaxation, be not easy to cause the bonding with protective glue band The dislocation of the sticking position of adhesive tape 1 and graphite flake.
In addition, in the present embodiment, protective glue band 35 is set as 5mN/25mm or more to the bonding force of stainless steel plate 300mN/25mm or less.Protective glue band 35 is not removed during attaching from the surface of adhesive tape 1 as a result, by protective glue When removing from the surface of adhesive tape 1 with 35, protective glue band 35 can be removed successfully from the surface of adhesive tape 1.
In addition, in the present embodiment, protective glue band 35 to the bonding force (180 ° of peel angle) of adhesive tape 1 relative to Adhesive tape 1 is set as 0.02 times or more 0.5 times or less to the bonding force (180 ° of peel angle) of graphite flake.It will protect as a result, When retaining tape 35 is removed from the surface of adhesive tape 1, protective glue band 35 is easy to remove from the surface of adhesive tape 1, viscous It is not easily stripped between mixture layer 20 and graphite flake 100.
In addition, in the present embodiment, (peel angle is 180 ° to bonding force of the adhesive tape 1 to graphite flake 100, removing Speed is 300mm/ minutes) it is set as 100mN/25mm or more 1000mN/25mm or less.Protective glue band 35 is to adhesive tape 1 Bonding force (peel angle is 180 °, and peeling rate is 300mm/ minutes) is set as 5mN/25mm or more 100mN/ or less.As a result, Protective glue band 35 and the adherence on the surface of adhesive tape 1 are good, and protective glue band 35 is being removed from the surface of adhesive tape 1 When, it can smoothly remove, adhesive tape 1 is avoided to be stripped together with protective glue band 35.
In addition, in the present embodiment, protective glue band 35 is opposite to the bonding force (peel angle is 90 °) of adhesive tape 1 In protective glue band 35 to the bonding force (peel angle is 180 °) of adhesive tape 1, it is set as 1 times or more 10 times or less.Example as a result, Such as in the punch press process process of protective glue band 35, will process with punching blade lift from protective glue band 35 when, protective glue It is not easy to be removed from the surface of adhesive tape 1 together with processing with lifting for blade of punching with 35.
Further, present embodiment plays effect below.
In the present embodiment, the area of protective glue band 35 can be in a manner of being greater than the area of graphite flake 100 of black It constitutes.Exposed as a result, due to the outer region of protective glue band 35 from graphite flake 100, is easy visually to recognize protective glue band 35.Further, easily protective glue band 35 can be removed from adhesive tape 1.
It, can be at least one on protection resin film 32 by the bonding film 3 with protective glue band of present embodiment Setting can easily judge the shape before and after the removing of protective glue band 35 through coloring or attached markd identification part 32d on part State.Here, the state before and after the removing of protective glue band 35 can be observed by visual observation and be judged, optical instrument can also be passed through Judged.As a result, it is possible to certainly avoid forgetting to remove protective glue band 35.
For example, protection with a part of resin film 32 or universe may be set to be calculated as with the b* value of Lab color specification system -30 with Upper -10 color (for example, blue) below.If, can be easily using the protection coloured in this way resin film 32 Judge whether protective glue band 35 is attached on the surface of adhesive tape 1 or whether has removed from the surface of adhesive tape 1.
In addition, in the present embodiment, the total light transmittance of protective glue band 35 can for example be set as 65% or more 80% or less.By This, can confirm bonding film through protective glue band 35, can easily be done the inspection of bonding film.Here, the confirmation of bonding film Progress can be observed by visual observation, can also be carried out by optical instrument.Further, since the total light transmittance of protective glue band 35 is set as 65% or more 80% sees protective glue band 35 hereinafter, therefore can avoid leakage.Thereby, it is possible to certainly avoid forgetting to remove protective glue band 35。
In addition, in the present embodiment, protection is equipped with label portion 32t with resin film 32, and label portion 32t being capable of conduct Identification part 32d and function.Grasping label portion 32t as a result, can easily remove protective glue band 35 from adhesive tape 1, Further, by confirming label portion 32t, it can easily judge the state before and after the removing of protective glue band 35.
In addition, in the present embodiment, the surface free energy γ d of second adhesive phase 33 is set as 15mJ/m2The above 30mJ/ m2Below.As a result, when being laminated the surface of second adhesive phase 33 and adhesive tape 1, no bubble is mixed into, and can be obtained good Adherence.
In addition, when being equipped with roughened layer 15 and coloring layer 12, it can also be on the coloring layer 12 for being colored as black, setting contains There is the roughened layer 15 of silica dioxide granule, barium sulfate particle etc..If being formed on the coloring layer 12 for being colored as black roughened Layer, then according to the material of roughened layer, the appearance of graphite flake 100 has yellow sometimes.Reduce graphite flake sometimes as a result, 100 appearance.
Roughened layer containing silica dioxide granule, barium sulfate particle etc. is set on the coloring layer 12 for being colored as black 15, the appearance of the graphite flake 100 of adhesive tape 1 is pasted with without yellow, and the appearance of graphite flake 100 is improved.For example, stone The appearance of the entire surface of ink sheet 100 is in the black with no light perception.
In addition, 60 ° of mirror surface lusters on roughened 15 surface of layer are adjustable as 0.5% or more 50% or less.It attaches as a result, The appearance for having the graphite flake 100 of adhesive tape 1 is certainly in unglazed style.
In addition, when any one of first adhesive phase 20, resin film 11 and roughened layer 15 are coloured, graphite flake The part of 100 masking difference is further reduced, and the apparent aesthetics of graphite flake 100 is further enhanced.
In addition, coloring layer 12 is set between resin film 11 and roughened layer 15.Coloring layer 12 is also sent out as padded coaming Function is waved, even if roughened layer 15 is by from external impact, roughened layer 15 is also not easily susceptible to damage.Bonding film 3 as a result, Productivity be improved.
In addition, the rigidity for being dispersed with the roughened layer 15 of particle increases, when batching the bonding film 3 with protective glue band, Or when transmission has the bonding film 3 of protective glue band, it is not easy to generate scuffing equivalent damage on the upper surface of roughened layer 15.By This, the productivity of the bonding film 3 with protective glue band is further enhanced.
In addition, can be expanded by the blend ratio for changing silica dioxide granule and barium sulfate particle in roughened layer 15 The selecting range of the color of roughened layer 15.For example, the color by the amount for relative increasing barium sulfate particle, in roughened layer 15 Color blue becomes denseer.That is, by the blend ratio for changing silica dioxide granule and barium sulfate particle, it being capable of further expansion stone The selecting range of apparent color in ink sheet 100.
Embodiment
It is equal by the following examples that the utility model is described in more detail, but the scope of the utility model is not It is limited by these embodiments etc..The effect of the bonding film with protective glue band of present embodiment is shown in table 1,2.
[table 1]
[table 2]
Firstly, being illustrated to embodiment 1 shown in table 1.
[embodiment 1]
The preparation > of < adhesive tape adhesive composition
By by the butyl acrylate of 95.5 mass parts, the vinyl acetate of 3 mass parts, 1 mass parts acrylic acid -2- hydroxyl The acrylic acid copolymer of base ethyl ester and 0.5 mass parts, the acrylate copolymer that preparation weight average molecular weight is 1000000.Then, The hydrogenation of 25 mass parts is added by the acrylate copolymer to 100 mass parts (being scaled solid component, same as below) Rosin ester (Arakawa Chemical Industries, Ltd. manufacture, PINECRYSTAL KE-100, softening point: 100 DEG C), 4 mass parts newtrex ester (Arakawa Chemical Industries, Ltd. manufacture, PENSELD-135, softening point: 135 DEG C) and 24 mass parts petroleum resinoid (Mitsui Chemicals, Inc. manufacture, FTR6100, softening point: 95 DEG C), And mixed, to form adhesive composition.Adhesive composition is dissolved in toluene, being prepared for solid component concentration is 13 mass % Binder solution.
The preparation > of < coloring layer coating fluid
As the coating fluid of coloring layer, the solid component concentration used as carbamates is 59 mass %'s Dainichiseika Color&Chemicals Mfg.CO., LTD. manufactures UTCO-591BLACK (NX), with ethyl acetate pair It is diluted.The solid component concentration of the coating fluid of coloring layer is adjusted to 10 mass %, viscosity-adjusting agent is 15mPa·s。
The preparation > of < roughened layer coating solution
Roughened layer coating solution is prepared in the following manner: to the work of 100 mass parts (being scaled solid component) For the silica of polyester resin (TOYOBO CO., LTD. manufacture: Vylon 20SS) 22 mass parts of addition of binder resin The sulphur of particle (Tosoh Silica Corporation manufacture, NIPSIL SS50B, average grain diameter are 2.1 μm), 100 mass parts Sour barium particle (Sakai Chemical Industry CO., LTD. manufacture: BMH average grain diameter is 2.5 μm), uses toluene/first Solid component concentration is adjusted to 20 mass % by ethyl ketone (MEK) mixed solvent (toluene: MEK (mass ratio)=50:50).
The preparation > of < protective glue band silicone adhesive composition
As silicone adhesive, the silicone adhesive composition solution that joined colorant has been used.This joined The silicone adhesive composition solution of colorant prepared by following manner: being had to the addition curable of 100 mass parts The organic siliconresin of machine silicon (Shin-Etsu Chemical CO., LTD. manufacture, trade name: KS-847H) 3 mass parts of addition at Divide platinum catalyst (Dow Corning Toray CO., LTD. manufacture, the trade name: SRX- of (SD4584), 0.4 mass parts 212) colorant (NIKKO BICS CO., LTD manufacture: NSP-CZ9664BLUE) of 2.5 mass parts, is further added, uses Solid component concentration is adjusted to 25% by methyl ethyl ketone.
The manufacture > of < protective film
Using the silicone adhesive composition solution that joined colorant of protective glue band, in protection resin film On (TOYOBO CO., LTD. manufacture, Cosmo Shine PET50A4300), using knife type coater, with painting in 50m/ minutes Cloth speed forms the silicone adhesive layer that joined colorant in a manner of after making to dry with a thickness of 10 μm.Then, By the silicone adhesive surface that joined colorant be bonded stripping film (TOYOBO CO., LTD. manufacture, PET50E5000), to make the protective film for being laminated with stripping film on the protective glue band with a thickness of 60 μm.
The manufacture > of < bonding film
To 100 mass parts of solid component of adhesive tape adhesive composition add 1 mass parts (be scaled solid at Point) trimethylolpropane modified toluene diisocyanate (the Nippon Polyurethane Industry as crosslinking agent CO., LTD. is manufactured, CORONATE L), obtain adhesive composition solution (solid component concentration is 13 mass %).Then, will The stripping film of lift-off processing has been carried out using a face of the organic silicon remover to polyethylene terephthalate film (Lintec Corporation manufacture, SP-PET251130, with a thickness of 25 μm) is released so that after dry with a thickness of 2 μm Mode, with 50m/ minutes print speed printing speeds by the coating solution intaglio printing of adhesive composition on the lift-off processing face, so Afterwards, obtained film heat within 1 minute at 90 DEG C, form the adhesive phase with a thickness of 2 μm on stripping film. It then, is 100N/cm in clamping pressure (nip pressure)2Under conditions of, by the poly terephthalic acid second two as resin film Alcohol ester film (Toray Industries, Inc., PET2F51L, with a thickness of 2 μm) fits in the exposed surface side of adhesive phase, with Obtained bonding film is rolled into a roll by the tension of 150N/m.
Then, the bonding film being rolled into a roll cure within 7 days under conditions of 23 DEG C, 50%RH, be made as a result, by shelling The bonding film formed from film (thickness: 25 μm)/adhesive phase (thickness: 2 μm)/resin film (thickness: 2 μm).
Then, the bonding film being rolled into a roll is released, is coated with coloring layer coating in resin film surface using gravure coater Liquid, further progress heat treatment form the coloring layer with a thickness of 1 μm on bonding film.Further, so that thickness after dry For 1 μm of mode, it is coated in coloring level using gravure coater after roughened layer coating solution, to institute at 90 DEG C Obtained film heat within 1 minute, forms the roughened layer with a thickness of 1 μm.Then, there will be coloring layer and roughened The bonding film of layer is rolled into a roll.The overall thickness of the bonding film is 31 μm.
The manufacture > of bonding film and heat transmission sheet material of the < with protective glue band
Stripping film is removed from protective film, and by lamination process, the protective glue band for peeling stripping film off is attached at viscous The surface for closing the roughened layer of film, has made the bonding film with protective glue band.
Then, stripping film is removed from the bonding film with protective glue band, while by lamination process, it will be with protection The adhesive tape of adhesive tape is attached at the graphite flake surface of the laminated body formed by graphite flake/double faced adhesive tape/stripping film, carries out to it Punch press process and singualtion.
Attaching suitability evaluation > of the < to adhesive tape
In table 1,2, "○", " △ ", meaning is as follows represented by "×".
Zero:, can be in protective glue band and adhesive tape surface when protective glue band to be attached to the surface of bonding film Attach that interface is not mixed into air or fold, the state of generation of relaxation is attached.
△: when protective glue band to be attached to the surface of bonding film, though it can be attached, in protective glue band and adhesive glue The attaching interface of belt surface confirms a little generation for being mixed into air or fold, relaxation.
×: when protective glue band to be attached to the surface of bonding film, due to the patch in protective glue band and adhesive tape surface Attached interface binding force is excessively weak and leads to not be attached.
Attaching suitability evaluation > of the < to graphite flake
Adhesive tape with protective glue band is attached to the state of graphite flake with visual confirmation.
In table 1,2, meaning represented by "○", "×" is as follows.
Zero: when the adhesive tape for having protective glue band is attached at graphite flake, there is no bubble entrance attaching interface, not Generate fold and relaxation.
×: the supportive of the adhesive tape with protective glue band is poor, when being attached at graphite flake, attach interface have bubble into Enter, produces fold and relaxation.
< punch press process suitability evaluation >
In table 1,2, meaning represented by "○", "×" is as follows.
Zero: carrying out punch press process and when singualtion, the periphery of processing punching blade there is no protective glue band with Removing between the interface of adhesive tape has obtained the dimensional accuracy of desired punch press process.
×: when carrying out punch press process and singualtion, protective glue band has occurred with the periphery of punching blade in processing and glues The removing between the interface of adhesive tape is closed, the dimensional accuracy of desired punch press process is unable to get.
The removing suitability evaluation > of < protective glue band
It is bonded protective glue band, adhesive tape and graphite flake respectively, after carrying out punch press process, singualtion, removing is attached In the stripping film of the double faced adhesive tape of graphite flake, it is attached at adherend (SUS304).Then, with 90 ° of peel angle, peeling rate 1m/ minutes removing protective films, it is thus identified that exfoliated state.
In table 1,2, meaning represented by "○", "×" is as follows.
Zero: when removing protective glue band, being removed between protective glue band and the interface of adhesive tape.
×: when removing protective glue band, not peeling-off between protective glue band and the interface of adhesive tape, graphite flake is had occurred Agglutination destroys.
In embodiment 1, the Young's modulus of protective glue band is 4200MPa, flexibility 0.25mN/25mm.In addition, in reality It applies in example 1, protective glue band is 20mN/25mm to the bonding force (peel angle is 180 °) of stainless steel plate, and adhesive tape is to graphite The bonding force A (peel angle is 180 °) of piece is 220mN/25mm, bonding force B (peel angle of the protective glue band to adhesive tape It is 90 °) it is 80mN/25mm, protective glue band is 10mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape.This Outside, in embodiment 1, bonding force C/ bonding force A is 0.05, and bonding force B/ bonding force C is 8.0.
[embodiment 2]
In example 2, in addition to organosilicon (the Shin-Etsu Chemical of the addition curable to 100 mass parts CO., LTD. is manufactured, trade name: KS-847H) in be added to the organic siliconresin ingredients (SD4584) of 7.5 mass parts as organic Other than silicon adhesive, the bonding film with protective glue band is formd in the same manner as example 1.
In example 2, protective glue band is 30mN/25mm to the bonding force (peel angle is 180 °) of stainless steel plate, is protected Retaining tape is 103mN/25mm, bonding of the protective glue band to adhesive tape to the bonding force B (peel angle is 90 °) of adhesive tape Power C (peel angle is 180 °) is 22mN/25mm.In addition, in example 2, bonding force C/ bonding force A is 0.1, bonding force B/ Bonding force C is 4.7.
[embodiment 3]
In embodiment 3, in addition to organosilicon (the Shin-Etsu Chemical of the addition curable to 100 mass parts CO., LTD. is manufactured, trade name: KS-847H) in be added to the organic siliconresin ingredients (SD4584) of 10 mass parts as organic Other than silicon adhesive, the bonding film with protective glue band is formd in the same manner as example 1.
In embodiment 3, protective glue band is 50mN/25mm to the bonding force (peel angle is 180 °) of stainless steel plate, is protected Retaining tape is 160mN/25mm, bonding of the protective glue band to adhesive tape to the bonding force B (peel angle is 90 °) of adhesive tape Power C (peel angle is 180 °) is 33mN/25mm.In addition, in embodiment 3, bonding force C/ bonding force A is 0.15, bonding force B/ bonding force C is 4.8.
[embodiment 4]
In example 4, other than using urethane adhesive to replace silicone adhesive in protective glue band, Bonding film is formd in the same manner as example 1.
The preparation > of < protective glue band carbamate adhesive composition
About urethane adhesive, the carbamate adhesive composition solution that joined colorant has been used. The carbamate adhesive composition solution that joined colorant is prepared by following manner: to the amino of 100 mass parts The crosslinking agent of 8 mass parts is added in formic acid ester adhesive (TOYOCHEM CO., LTD. manufacture: CYABINE SH-109H) (TOYOCHEM CO., LTD. manufacture: CYABINE T-501B), is further added 2.5 mass parts colorant (NIKKO BICS CO., LTD is manufactured: NSP-CZ9664BLUE), solid component concentration being adjusted to 25% using methyl ethyl ketone.
The manufacture > of < protective glue band
Using the carbamate adhesive composition solution that joined colorant of protective glue band, in stripping film On (Lintec Corporation manufacture, SP-PET251130), using knife type coater, with 50m/ minutes coating speeds, In a manner of after drying with a thickness of 10 μm, the urethane adhesive layer that joined colorant is formd.Then, by It joined and be bonded the protection resin film (Cosmo of TOYOBO CO., LTD. manufacture on the urethane adhesive layer of colorant Shine PET50A4300), to make the protective glue band for being fitted with stripping film.
In example 4, protective glue band is 25mN/25mm to the bonding force (peel angle is 180 °) of stainless steel plate, is protected Retaining tape is 83mN/25mm, bonding of the protective glue band to adhesive tape to the bonding force B (peel angle is 90 °) of adhesive tape Power C (peel angle is 180 °) is 10mN/25mm.In addition, bonding force C/ bonding force A is 0.05, bonding force B/ in embodiment 4 Bonding force C is 8.3.
[embodiment 5]
In embodiment 5, other than using the protection resin film with a thickness of 75 μm, with side same as Example 4 Formula forms bonding film.
In embodiment 5, the flexibility of protective glue band is 0.70mN/25mm.In addition, in embodiment 5, protective glue band pair The bonding force (peel angle is 180 °) of stainless steel plate is 15mN/25mm, bonding force B (removing of the protective glue band to adhesive tape Angle is 90 °) it is 50mN/25mm, protective glue band is 7mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape. In addition, bonding force C/ bonding force A is 0.03 in embodiment 5, bonding force B/ bonding force C is 7.1.
[embodiment 6]
In embodiment 6, other than not formed coloring layer and roughened layer, formed in the same manner as example 1 Bonding film.
In embodiment 6, protective glue band is 100mN/25mm to the bonding force B (peel angle is 90 °) of adhesive tape, is protected Retaining tape is 20mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape.In addition, in embodiment 6, bonding force C/ bonding force A is 0.09, and bonding force B/ bonding force C is 5.0.
[embodiment 7]
In embodiment 7, other than the thickness of coloring layer is set as 3 μm, form in the same manner as example 1 Bonding film.
In embodiment 7, protective glue band is 90mN/25mm to the bonding force B (peel angle is 90 °) of adhesive tape, is protected Retaining tape is 15mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape.In addition, in embodiment 7, bonding force C/ bonding force A is 0.07, and bonding force B/ bonding force C is 6.0.
In Examples 1 to 7, the attaching suitability to adhesive tape is "○", and the attaching suitability to graphite flake is "○", punch press process suitability are "○", and the removing suitability of protective glue band is "○".
[comparative example 1]
In comparative example 1, in addition in protective glue band use acryloid cement replace silicone adhesive other than, with The identical mode of embodiment 1 forms bonding film..
The preparation > of < protective glue band acrylic acid adhesive composition
By by the acrylic acid-2-ethyl caproite of 92.8 mass parts, the 2-Hydroxy ethyl acrylate of 7 mass parts, 0.2 matter The acrylic acid copolymer of part is measured, the acrylate copolymer that preparation weight average molecular weight is 1000000 is using as acryloid cement.So Afterwards, it is prepared for joined the acrylic acid adhesive composition solution of colorant by following manner: 100 mass parts (is scaled It is solid component, same as below) the acrylate copolymer plasticizer (the Taoka Chemical of 37.5 mass parts is added CO., the ATBC of LTD. manufacture), the trimethylolpropane modified toluene diisocyanate as crosslinking agent of 26 mass parts (Nippon Polyurethane Industry CO., LTD. manufacture, CORONATE L), 2.5 mass parts are used as colorant NIKKO BICS CO., the SP-CZ9664BLUE of LTD manufacture, to be prepared for solid component concentration using ethyl acetate It is adjusted to 25% acrylic acid adhesive composition solution.
The manufacture > of < protective glue band
Using the acrylic acid adhesive composition solution that joined colorant of protective glue band, in stripping film (Lintec The SP-PET251130 of Corporation manufacture) on, using knife type coater, with 50m/ minutes coating speeds, after drying With a thickness of 10 μm of mode, form the acrylic adhesive layer that joined colorant.Then, in the propylene that joined colorant Protection resin film (the Cosmo Shine PET 50A4300 of TOYOBO CO., LTD. manufacture), system are bonded on sour adhesive phase The protective glue band for being fitted with stripping film is made.
In comparative example 1, even if the protection resin film of protective glue band is identical as Examples 1 to 7, the bonding of protective glue band The bonding force of oxidant layer is also extremely weak.In comparative example 1, protective glue band is to the bonding force (peel angle is 180 °) of stainless steel plate, guarantor Retaining tape is to the bonding force B of adhesive tape (peel angle is 90 °), protective glue band to the bonding force C (peel angle of adhesive tape It is 180 °) it is too weak, it can not measure.
In comparative example 1, since protective glue band can not be attached on adhesive tape (evaluation "×"), it can not be pasted It is attached to the process to graphite flake.Therefore, the removing for attaching suitability, punch press process suitability, protective glue band of graphite flake is fitted The evaluation of suitable property can not carry out ("-").
[comparative example 2]
It, will in the preparation of the protective glue band acrylic acid adhesive composition made in comparative example 1 in comparative example 2 Trimethylolpropane modified toluene diisocyanate (the Nippon Polyurethane Industry added as crosslinking agent CO., LTD. is manufactured, CORONATE L) 13 mass parts are set as, so that preparation joined the acrylic acid adhesive composition of colorant Solution, by joined after drying colorant acrylic adhesive layer with a thickness of 20 μm in a manner of formed.In addition to this, with The identical mode of comparative example 1 forms the bonding film with protective glue band.
In comparative example 2, even if the protection resin film of protective glue band is identical as Examples 1 to 7, the bonding of protective glue band Power is also high.In addition, protective glue band is 310mN/ to the bonding force (peel angle is 180 °) of stainless steel plate in comparative example 2 25mm, protective glue band, more than 500mN/25mm, are 530mN/25mm, protect to the bonding force B (peel angle is 90 °) of adhesive tape Retaining tape, more than 100mN/25mm, is 230mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape.In addition, In comparative example 2, bonding force C/ bonding force A is more than 0.5, is 1.05, and bonding force B/ bonding force C is 2.3.
In comparative example 2, the attaching suitability to adhesive tape is "○", and the adhesion to graphite flake is "○", punching Processing suitability is "○", but the removing suitability of protective glue band is "×".
[comparative example 3]
In comparative example 3, in addition to the protection resin film in protective glue band using the polyethylene with a thickness of 110 μm Other than (the LDPE 0925-110 of J-Film Corporation manufacture), formd in the same manner as example 1 with guarantor The bonding film of retaining tape.
In comparative example 3, the Young's modulus of protective glue band is less than 2000MPa, is 150MPa, the protection softness of resin film Property be less than 0.1mN/25mm, be 0.08mN/25mm.In addition, in comparative example 3, bonding force (stripping of the protective glue band to stainless steel plate Digression degree is 180 °) it is 4mN/25mm, protective glue band is 35mN/ to the bonding force B (peel angle is 90 °) of adhesive tape 25mm, protective glue band are less than 5mN/25mm to the bonding force C (peel angle is 180 °) of adhesive tape, are 3mN/25mm.In addition, In comparative example 3, it is 11.7 that bonding force C/ bonding force A, which is 0.01 less than 0.02, and bonding force B/ bonding force C is more than 10.
In comparative example 3, although the thickness of the protection resin film of protective glue band is thicker than Examples 1 to 7, but protective glue band Young's modulus be lower than Examples 1 to 7.In comparative example 3, although the removing suitability of protective glue band is "○", to bonding The attaching suitability of adhesive tape is " △ ", and the adhesion to graphite flake is "×", and punch press process suitability is "×".In addition, than Compared in example 3, the bonding force of protective glue band is weak, and protective glue band is easy to remove from bonding film.
More than, the embodiments of the present invention is illustrated, but the utility model is not limited in above-mentioned reality Mode is applied, various changes can be subject to completely.

Claims (10)

1. a kind of bonding film with protective glue band, for the bonding film with protective glue band of protection graphite flake, the bonding film Have:
Stripping film；
Adhesive tape, which includes: being set to the first adhesive phase on the surface of the stripping film and is set to described The resin film with the surface of the stripping film opposite side of first adhesive phase；And
Protective glue band, the protective glue band include being set to the adhesive tape with stripping film opposite side surface and logical Crossing the bonding force to stainless steel plate that 180 degree disbonded test obtains is 5mN/25mm or more 300mN/25mm the second bonding below Oxidant layer and the protection resin film with the surface of the adhesive tape opposite side for being set to the second adhesive phase, the guarantor Retaining tape structure in such a way that the protection can be removed from the adhesive tape with resin film together with the second adhesive phase At, and with relative to the adhesive tape with a thickness of 1 times or more 20 times thickness below, the poplar with 2000Mpa or more Family name's modulus.
2. the bonding film according to claim 1 with protective glue band, wherein
The adhesive tape is with the bonding force to the graphite flake that is obtained by 180 degree disbonded test for 100mN/25mm or more 1000mN/25mm mode below is constituted.
3. the bonding film according to claim 1 or 2 with protective glue band, wherein
The protective glue band is with the bonding force to the adhesive tape that is obtained by 90 degree of disbonded tests for 10mN/25mm or more 500mN/25mm or less, the bonding force to the adhesive tape obtained by 180 degree disbonded test are 5mN/25mm or more 100mN/25mm mode below is constituted.
4. the bonding film according to claim 3 with protective glue band, wherein
The protective glue band obtained by 180 degree disbonded test to the bonding force of the adhesive tape, is removed by 180 degree The obtained adhesive tape is tested to 0.02 times or more 0.5 times or less of the bonding force of the graphite flake.
5. the bonding film according to claim 1 with protective glue band, wherein
Protection resin film so that by the flexibility that Ge Erlai is tested be 0.1mN/25mm or more 2mN/25mm with Under mode constitute.
6. the bonding film according to claim 1 with protective glue band, wherein
The adhesive tape further has coloring layer on the resin film,
The protective glue band is attached at the surface of the coloring layer of the adhesive tape with the coloring layer.
7. the bonding film according to claim 1 with protective glue band, wherein
The resin film has 1 μm or more 6 μm of thickness below.
8. the bonding film according to claim 1 with protective glue band, wherein
The first adhesive phase has 1 μm or more 5 μm of thickness below.
9. the bonding film according to claim 1 with protective glue band, wherein
The protection has 25 μm or more 200 μm of thickness below with resin film.
10. the bonding film according to claim 1 with protective glue band, wherein
The second adhesive phase has 3 μm or more 50 μm of thickness below.
CN201820275087.7U 2017-03-13 2018-02-27 Bonding film with protective glue band Active CN208594230U (en)

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CN109370456A (en) * 2018-10-24 2019-02-22 佛山市佳世达薄膜科技有限公司 A kind of high temperature resistant viscosity is not climbed protective film
JP6906560B2 (en) * 2019-04-03 2021-07-21 リンテック株式会社 Adhesive sheet and display
CN111154417B (en) * 2020-01-19 2021-09-03 惠州Tcl移动通信有限公司 Protective film assembly

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JP2015071727A (en) * 2013-10-04 2015-04-16 日栄化工株式会社 Adhesive film for processing graphite sheet, and heat radiation sheet product on which the adhesive film is adhered
JP6454587B2 (en) * 2015-03-31 2019-01-16 リンテック株式会社 Method for producing graphite sheet laminate, method for producing individualized product of graphite sheet laminate, method for producing individualized product sealed adhesive sheet of graphite sheet laminate, and method of producing individual product of graphite sheet laminated product sealed adhesive sheet Method
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