CN108611004A

CN108611004A - Colour adhesive film

Info

Publication number: CN108611004A
Application number: CN201710539998.6A
Authority: CN
Inventors: 荒添铁也; 安斋刚史; 仓田雄; 仓田雄一; 高田耕辅
Original assignee: Lintec Corp
Current assignee: Lintec Corp
Priority date: 2016-12-28
Filing date: 2017-07-05
Publication date: 2018-10-02
Also published as: JP6101395B1; JP2018104641A

Abstract

The present invention provides a kind of coloring adhesive film, and suitability is excellent, and design is also excellent for batching when processing slim adhesive film by roll-to-roll mode.Coloring adhesive film is the coloring adhesive film for protecting graphite flake.Coloring adhesive film has stripping film, adhering agent layer, resin film, dyed layer and roughened layer.Above-mentioned adhering agent layer is arranged at the surface of above-mentioned stripping film.Above-mentioned resin film is arranged at the surface with above-mentioned stripping film opposite side of above-mentioned adhering agent layer.Above-mentioned dyed layer is arranged at the surface with above-mentioned adhering agent layer opposite side of above-mentioned resin film.Above-mentioned roughened layer contains inorganic particle and binder resin.Above-mentioned roughened layer has the average height (Rc) of roughness curve element for 0.5 μm or more, is 2 structural planes below relative to the dynamic friction factor of above-mentioned stripping film.Above-mentioned roughened layer is arranged at the surface with above-mentioned resin film opposite side of above-mentioned dyed layer.

Description

Colour adhesive film

Technical field

The present invention relates to a kind of coloring adhesive films.

Background technology

In order to promote to be set to the heat dissipation of internal electronic unit, make in the small-sized electronic products such as mobile phone, laptop With the graphite flake for having heat transmission.In order to improve slimming and the thermal diffusivity of electronic product, it is used in these small-sized electronic products Graphite flake is set to very thin.Therefore, in graphite flake, its defect, stripping etc. in order to prevent, using coloring adhesive tape come It protects graphite flake surface (for example, referenced patent document 1,2).

In patent document 1, as the adhesive tape for protecting graphite flake, a kind of coloring adhesive tape is disclosed, There is adhering agent layer at least one surface of colored matrix materials, wherein the colored matrix materials have：Thickness is 1 μm or more 6 μm Resin film layer below, thickness are that 1 μm or more 6 μm adhering agent layers and thickness below are 0.5 μm or more 2 μm below The light transmittance of chromatograph, the colored matrix materials is 0.1% or more 10% hereinafter, the thickness of adhesive tape is 3 μm or more 10 μm or less.

In patent document 2, as the adhesive tape for protecting graphite flake, a kind of coloring adhesive tape is disclosed, There is adhering agent layer at least one surface of coloring film, wherein the coloring film is provided on supporter by coloring printing ink The dyed layer of formation.In addition, Patent Document 2 discloses, the dyed layer by contain binder resin, coloured material and The coloring printing ink of silica dioxide granule with specific average grain diameter is formed.

Coloring adhesive tape for example has adhering agent layer, the resin film being set on adhering agent layer and is set to resin Dyed layer on film.Resin film is, for example, the base material for colouring adhesive tape.Also, dyed layer, such as making the outer of graphite flake The not eye-catching shielding layer of spot in sight and work.In the coloring adhesive tape, slimming is also required, the thickness of adhesive tape is 10 μm hereinafter, becoming very thin.Such coloring adhesive tape, such as formed by roll-to-roll mode together with stripping film.This Outside, in roll-to-roll mode, the coloring adhesive tape with stripping film by the state (hereinafter, be denoted as coloring adhesive film.) rolled up Roller is taken to roll.

Later, by roll-to-roll mode, coloring adhesive film is processed as defined width by severing, is used as protecting graphite flake Protection glue band.When manufacturing very thin coloring adhesive film by roll-to-roll mode like this, it some times happens that adhesion when batching (film surface and the stickup being contacted between the back of the membrane on it), air be mixed into (fold) etc. batch it is bad.In addition, in recent years Come, in the coloring adhesive film, from beautiful angle, at the inside for being configured in electronic product, also requires to seem In integrated design.

Existing technical literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2013-203965 bulletins

Patent document 2：Japanese Unexamined Patent Publication 2013-112695 bulletins

Invention content

The technical problem to be solved in the present invention

In view of the foregoing, the purpose of the present invention is to provide a kind of coloring adhesive film, add by roll-to-roll mode Suitability is excellent, and design is also excellent for batching when work slim coloring adhesive film.

Solve the technological means of technical problem

In order to achieve the above object, the coloring adhesive film that a kind of mode of the invention is related to, to protect the coloring of graphite flake Adhesive film.Coloring adhesive film has stripping film, adhering agent layer, resin film, dyed layer and roughened layer.Above-mentioned adhering agent layer It is arranged at the surface of above-mentioned stripping film.Above-mentioned resin film be arranged at above-mentioned adhering agent layer with above-mentioned stripping film opposite side Surface.Above-mentioned dyed layer is arranged at the surface with above-mentioned adhering agent layer opposite side of above-mentioned resin film.Above-mentioned roughened layer contains Have：Inorganic particle and binder resin.Above-mentioned roughened layer has：The average height (Rc) of roughness curve element is 0.5 μm Above, it is 2 structural planes below relative to the dynamic friction factor of above-mentioned stripping film.Above-mentioned roughened layer is arranged at above-mentioned coloring The surface with above-mentioned resin film opposite side of layer.

Coloring adhesive film in this way is not easy to cause to colour adhesive film even if coloring adhesive film is taken up roller and rolls Adhesion and the mixed generation of air, and when processing slim coloring adhesive film by roll-to-roll mode to batch suitability excellent Different, design is also excellent.Further, the adaptation of roughened layer also becomes good.

In addition, in above-mentioned coloring adhesive film, it is above-mentioned roughened relative to the above-mentioned binder resin of 100 parts by weight Layer can also contain above-mentioned inorganic particles more than 40 mass parts.

In addition, in above-mentioned coloring adhesive film, structural plane can also have 0.5% or more 50% 60 ° of minute surfaces below Glossiness.

In addition, in above-mentioned coloring adhesive film, above-mentioned binder resin can also contain polyester resin, poly ester urethane tree At least one of fat.

In addition, in above-mentioned coloring adhesive film, above-mentioned inorganic particle can also contain silica dioxide granule and sulfuric acid At least one of titanate particle particle.

In addition, in above-mentioned coloring adhesive film, above-mentioned dyed layer can also contain polyester resin, in poly ester urethane resin At least one.

In addition, in above-mentioned coloring adhesive film, above-mentioned dyed layer can also be colored as black.

In addition, in above-mentioned coloring adhesive film, above-mentioned adhering agent layer, above-mentioned resin film, above-mentioned dyed layer and above-mentioned At least one layer in roughened layer can also contain colorant.

In addition, in above-mentioned coloring adhesive film, the thickness of above-mentioned adhering agent layer may be 1 μm or more 5 μm or less.

In addition, in above-mentioned coloring adhesive film, the thickness of above-mentioned resin film may be 1 μm or more 6 μm or less.

In addition, in above-mentioned coloring adhesive film, the thickness of above-mentioned roughened layer may be 0.5 μm or more 10 μm with Under.

In addition, in above-mentioned coloring adhesive film, the average grain diameter of above-mentioned inorganic particle may be 10 μm of 50nm or more Below.

In addition, in above-mentioned coloring adhesive film, the structural plane also may be used relative to the dynamic friction factor of the stripping film Think 0.5 or more 1.5 or less.

In addition, in above-mentioned coloring adhesive film, the arithmetic mean roughness (Ra) in above structure face may be 0.1 μm Above 1.0 μm or less.

In addition, in above-mentioned coloring adhesive film, the average height (Rc) of the roughness curve element in above structure face It can be 0.5 μm or more 5.0 μm or less.

In addition, in above-mentioned coloring adhesive film, 10 mean roughness (Rzjis) in above structure face may be 1.0 μm or more 9.0 μm or less.

In addition, in above-mentioned coloring adhesive film, the mean height of the roughness curve element of the lower surface of above-mentioned stripping film Spend (Rc) or 500nm or less.

In addition, above-mentioned coloring adhesive film can also be formed as long sheet.

In addition, in above-mentioned coloring adhesive film, above-mentioned adhering agent layer, above-mentioned resin film, above-mentioned dyed layer and above-mentioned Roughened layer can also be glued to the surface for the graphite flake being set to inside electronic unit.

Coloring adhesive film in this way is not easy to cause to colour adhesive film even if coloring adhesive film is taken up roller and rolls Adhesion and the mixed generation of air, in the graphite flake for being pasted with coloring adhesive tape, exterior aesthetics are further carried It is high.In addition, the adaptation of roughened layer becomes good.

Invention effect

As described above, by the invention it is possible to provide a kind of coloring adhesive film, it is slim being processed by roll-to-roll mode Coloring adhesive film when batch that suitability is excellent, and design is also excellent.

Description of the drawings

In Fig. 1, figure (a) is stereoscopic schematic diagram of the coloring adhesive film of present embodiment under the state that is wound.Scheming (b) is The diagrammatic cross-section of the coloring adhesive film of present embodiment.Figure (c) is the roughened layer in the coloring adhesive film of present embodiment Diagrammatic cross-section.

Fig. 2 is to be glued to shell by double faced adhesive tape with the graphite flake of coloring adhesive tape of the present embodiment State diagrammatic cross-section.

Fig. 3 is the schematic diagram that the manufacturing process of the coloring adhesive film to present embodiment illustrates.

Reference sign

1：Colour adhesive tape；2：Colour adhesive film；11：Resin film；12：Dyed layer；15：Roughened layer；15p：It is inorganic Particle；15b：Binder resin；15u：Upper surface；20：Adhering agent layer；30：Stripping film；30d：Lower surface；51：With sticker The stripping film of layer；52：Adhesive film；100：Graphite flake；101：Double faced adhesive tape；102：Shell；210：Work beam；211：Roll out roller； 220：Coating mechanism；230：Hothouse；240：Labelling machine；240a：Roll out roller；240b：Roller；240c：Roller；250a、250b、 250c、250d：Deflector roll；310：Work beam；311：Roll out roller；320：Coating mechanism；330：Hothouse；350a、350b、350c： Deflector roll；410：Work beam；411：Roll out roller；420：Coating mechanism；430：Hothouse；450a：Deflector roll；450b：Deflector roll；450c： Deflector roll.

Specific implementation mode

Hereinafter, on one side with reference to Figure of description, embodiments of the present invention will be described on one side.Sometimes in each theory In bright book attached drawing, XYZ axial coordinates are imported.

[composition of coloring adhesive film]

As shown in Fig. 1 (a), the coloring adhesive film 2 of present embodiment is formed long sheet.Coloring adhesive film 2 is can The soft resin tape wound in an axial direction.For example, in the example of Fig. 1 (a), coloring adhesive film 2 is in long side direction On DL, rolled up on work beam (batching core) 410.Coloring adhesive film 2 on work beam 410 is rolled up on long side direction DL Length (overall length) is, for example, 6000m or more 10000m or less.In (the short side sides width direction DW to intersect vertically with long side direction DL To) on the length of coloring adhesive film 2 be, for example, 800mm or more 1500mm or less.

The coloring adhesive film 2 on work beam 410 is rolled up, for example, being formed by roll-to-roll mode.It is rolled up and is being batched Coloring adhesive film 2 on roller 410 is processed as defined width by roll-to-roll mode by severing, later, is cut into regulation Shape, for example, the Protection glue band of graphite flake as protection setting inside electronic unit and used.For example, by rolling up Coloring adhesive film 2 on work beam 410, with the width of every 100mm by severing, can also be divided on width direction DW It is multiple.The coloring adhesive film 2 being divided can also be batched by other work beams again.In addition, in present embodiment In figure, using width direction DW as X-direction, long side direction DL is as Y direction.

Cross-section structure to colouring adhesive film 2 illustrates.

As shown in Fig. 1 (b), coloring adhesive film 2 have resin film 11, dyed layer 12, roughened layer 15, adhering agent layer 20, And stripping film 30.In the example of Fig. 1 (b), coloring adhesive film 2 is coloured with 30/ adhering agent layer of stripping film, 20/ resin film 11/ The sequence of 12/ roughened layer 15 of layer is stacked.It, will be roughened sometimes using the side of stripping film 30 as downside in present embodiment The side of layer 15 is used as upside.

In colouring adhesive film 2, stripping film 30 can be removed from stripping film 30 and the interface of adhering agent layer 20.This implementation In mode, using stripping film 30 from the composition after the coloring stripping of adhesive film 2 as coloring adhesive tape 1.Coloring adhesive tape 1 has Resin film 11, roughened layer 15, dyed layer 12 and adhering agent layer 20.

Stripping film 30 is arranged at the surface with 11 opposite side of resin film of adhering agent layer 20.In the example of Fig. 1 (b), Stripping film 30 is lowest level.Adhering agent layer 20 is arranged at the surface with lower surface 30d opposite sides of stripping film 30.For example, viscous Oxidant layer 20 to be arranged between stripping film 30 and resin film 11.Resin film 11 be arranged at adhering agent layer 20 with stripping film 30 The surface of opposite side.For example, resin film 11 is arranged between dyed layer 12 and adhering agent layer 20.Resin film 11 is that coloring is adhered The base material of film 2.Dyed layer 12 is arranged at the surface with 20 opposite side of adhering agent layer of resin film 11.For example, 12 quilt of dyed layer It is set between resin film 11 and roughened layer 15.Dyed layer 12 is set to assign coloring 2 design of adhesive film. In addition, the layer of the adaptation between dyed layer 12 or raising resin film 11 and roughened layer 15.Roughened layer 15 is arranged at The surface with 11 opposite side of resin film of dyed layer 12.

An example of the section of roughened layer 15 is indicated in Fig. 1 (c).For example, roughened layer 15 contains inorganic particle 15p With binder resin 15b.In the upper surface 15u of roughened layer 15, inorganic particle 15p can expose, binder resin 15b It can expose.The average grain diameter of inorganic particle 15p is 10 μm of 50nm or more or less.

In the example of Fig. 1 (b), roughened layer 15 is top layer.When coloring adhesive film 2 is taken up roller 410 and rolls, asperities Change the upper surface 15u (structural plane) of layer 15 and being contacted with the face (lower surface 30d) of 20 opposite side of adhering agent layer for stripping film 30.

The arithmetic average roughness Ra of the upper surface 15u (structural plane) of roughened layer 15, there is no particular limitation, but preferably It it is 0.1 μm or more, more preferably 0.1 μm or more 1.0 μm hereinafter, further preferably 0.2 μm or more 0.5 μm or less.It is roughened The average height Rc of the roughness curve element of layer 15 is 0.5 μm or more, and preferably 0.5 μm or more 5.0 μm hereinafter, more preferably 0.8 μm or more 3.0 μm hereinafter, further preferably 1.0 μm or more 2.0 μm or less.10 mean roughness of roughened layer 15 Rzjis, there is no particular limitation, but preferably 1.0 μm or more, and more preferably 1.0 μm or more 9.0 μm hereinafter, further preferably For 2.0 μm or more 7.0 μm hereinafter, particularly preferably 2.5 μm or more 5.0 μm or less.

By making roughened layer 15 that there is the structural plane of above range, aftermentioned dynamic friction factor can be made in defined model It encloses.Even if coloring adhesive film 2 is taken up roller 410 and rolls as a result, it is not easy to cause to colour 2 adhesion of adhesive film and air is mixed into Generation, and when processing slim coloring adhesive film 2 by roll-to-roll mode to batch suitability excellent.In addition, by making Roughened layer 15 has the structural plane of above range, can make 60 ° of bright lusters of the upper surface 15u of aftermentioned roughened layer 15 Degree is in defined range.The design when graphite flake 100 for being pasted with coloring adhesive film 2 being set to inside electronic unit as a result, Property is excellent.

For example, the upper surface 15u of roughened layer 15 relative to the lower surface 30d of stripping film 30 dynamic friction factor be 2 with Under, preferably 1.8 hereinafter, more preferably 1.5 or less.The lower limit of dynamic friction factor, there is no particular limitation, but preferably 0.5 More than, more preferably 1 or more.If dynamic friction factor is more than 2, when colouring adhesive film 2 and being taken up roller 410 and roll, there is generation The possibility of adhesion.In addition, when if dynamic friction factor is less than 0.5, when colouring adhesive film 2 and being taken up roller 410 and roll, it is possible to Batch dislocation.

In addition, 60 ° of mirror surface lusters of the upper surface 15u of the roughened layer 15 with such roughness, without special Restriction, but for 0.5% or more 50% hereinafter, preferably 1% or more 9% hereinafter, more preferably 1% or more 5% or less.By This, in the graphite flake 100 for being pasted with coloring adhesive film 2, appearance becomes frosted quality, and coloring adhesive tape 1 is arranged at When inside electronic unit, coloring adhesive tape 1 seems with electronic unit to be in integrated, therefore its design becomes excellent.

In colouring adhesive film 2, in the Z-axis direction between adjacent layer, it can be in direct contact, it can also mediate contact. In mediate contact, there may also be the middle layers (not shown) for improving adaptation etc. between adjacent layer in the Z-axis direction. In addition, each layer in coloring adhesive film 2 can be single layer, can also be made of multiple layers.

In colouring adhesive film 2, there is no particular limitation for the thickness of stripping film 30, but preferably 20 μm or more 80 μm with Under, more preferably 20 μm or more 30 μm or less.Here, the thickness in present embodiment, for the aftermentioned thickness measured by multiple points The average value of degree.

There is no particular limitation for the thickness of adhering agent layer 20, but preferably 1 μm or more 5 μm hereinafter, more preferably 1 μm or more 3 μm or less.If the thickness of adhering agent layer 20 is less than 1 μm, adhering agent layer 20 is low with the adaptation of graphite flake, is difficult to sometimes fully Protect graphite flake.If the thickness of adhering agent layer 20 is more than 5 μm, colours adhesive film 2 and thicken, is unsatisfactory for the requirement of slimming.

The thickness of resin film 11 is, for example, 1 μm or more 6 μm hereinafter, preferably 1 μm or more 3 μm or less.If resin film 11 Thickness is less than 1 μm, then the strength reduction of resin film 11, it is difficult to be transported by roll-to-roll mode.If the thickness of resin film 11 Degree is more than 6 μm, then colours adhesive film 2 and thicken, and is unsatisfactory for the requirement of slimming.

The thickness of dyed layer 12 is, for example, 0.5 μm or more 10 μm hereinafter, preferably 0.8 μm or more 3 μm or less.If dyed layer 12 thickness is less than 0.5 μm, then resin film 11 and the adaptation of roughened layer 15 reduce, and roughened layer 15 can be from resin film sometimes It is peeled off on 11.In addition, if the thickness of dyed layer 12 is more than 10 μm, colours adhesive film 2 and thicken, is unsatisfactory for the requirement of slimming.

The thickness of roughened layer 15 be, for example, 0.5 μm or more 10 μm hereinafter, preferably 0.6 μm or more 3.0 μm hereinafter, more excellent It is selected as 0.8 μm or more 2.0 μm or less.If the thickness of roughened layer 15 is less than 0.5 μm, it cannot get required structural plane；If thick The thickness of face layer 15 is more than 10 μm, then colours adhesive film 2 and thicken, and is unsatisfactory for the requirement of slimming.

By making the thickness of each layer in above range, the thickness of coloring adhesive tape 1 after stripping film 30 is stripped becomes 10 μm or so, coloring adhesive tape 1 is formed very thin.

Fig. 2 is that the graphite flake with adhesive tape of present embodiment is glued to the state of shell by double faced adhesive tape Diagrammatic cross-section.

As shown in Fig. 2, the coloring adhesive tape 1 that stripping film 30 has been stripped, for example, being glued to graphite flake 100.Example Such as, the exposed surface of the adhering agent layer 20 of coloring adhesive tape 1 is adhered to the surface of graphite flake 100.In addition, graphite flake 100 is logical It crosses double faced adhesive tape 101 and is glued to shell 102 (for example, electronic unit).As a result, in graphite flake 100, heat along Z-direction, X-direction and Y direction diffusion.The heat distributed as a result, from electronic unit is efficiently radiated.

In addition, coloring adhesive tape 1 can not interfere the inner space of small-sized electronic product due to very thin In the case of, it is configured in electronic product.Further, due to being provided with dyed layer 12 in coloring adhesive tape 1, stone can be made The apparent spot of ink sheet becomes not eye-catching.Further, due to being provided with roughened layer 15 on coloring adhesive tape 1, at For the appearance of frosted quality.Coloring adhesive tape 1 seems that with electronic unit be in integrated (seeming to combine together) as a result, Therefore, coloring adhesive tape 1 is not eye-catching, and design is also improved.

In addition, in colouring adhesive tape 1, at least one of adhering agent layer 20, resin film 11 and roughened layer 15, Colorant can also be contained.There is no particular limitation for colorant, but can enumerate for example, carbon black, titanium oxide, calcium carbonate, sulphur Sour barium, yellow ferric oxide, red ferric oxide, cyanine blue, aluminium powder, mica titanium valve etc..The apparent spot of graphite flake 100 becomes as a result, Not eye-catching, the apparent aesthetics of graphite flake 100 is further enhanced.That is, the graphite flake that coloring adhesive film 2 will be pasted with 100 design when being set to the inside of electronic unit becomes more excellent.

The material of each layer in adhesive film 2, the assay method of physics value are coloured, as described below.

[resin film]

The resin types of resin film are used in, there is no particular limitation, but can enumerate for example, by poly terephthalic acid second The polyester that the polyester such as diol ester (PET), polybutylene terephthalate (PBT) (PBT), polyethylene naphthalate (PEN) are formed Film；The cellulose membranes such as polyurethane film, polyethylene 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, norborneol The resin films such as vinyl resin film, cycloolefin resin film；The laminated body etc. of two or more these resin film.Resin film can also be The film made of being stretched uniaxially or biaxially.Wherein, from the precision for the thickness being required with membranization, surface smoothness, The difficulty of acquisition is angularly set out, preferably polyester film.As polyester film, particularly preferred PET film.In addition, from dimensional stability It sets out with the angle of intensity, polyester film is preferably through film made of biaxial stretch-formed.Wherein, preferably through PET film made of biaxial stretch-formed.

[dyed layer]

In the coloring adhesive film 2 of present embodiment, dyed layer 12 is arranged between resin film 11 and roughened layer 15.It should Dyed layer 12 is to improve the adaptation between resin film 11 and roughened layer 15 and colour adhesive film further for assigning 2 designs and be arranged.Dyed layer matches with the color for the electronic unit for being pasted with coloring adhesive tape, or uses reconciliation Color is coloured, and there is no particular limitation, but from make the apparent spot of graphite flake become it is not eye-catching, assign design It angularly sets out, preferably black.

Dyed layer preferably comprises coloured material and binder resin.As binder resin, can enumerate for example, urethane tree Fat, epoxy resin, polyester resin, poly ester urethane resin etc..These resins can be used alone, and two or more can also simultaneously make With.Wherein, angle excellent from flexibility, with the adaptation of roughened layer, binder resin be more preferably polyester resin, At least one of poly ester urethane resin, more preferably poly ester urethane resin.From the angle of the adaptation with roughened layer, It is preferred that the glass transition temperature (Tg) of above-mentioned binder resin is -30~10 DEG C.

Dyed layer is preferably cured by curing agent.There is no particular limitation for curing agent, can coordinate binder resin And it is suitably selected.When binder resin is poly ester urethane resin, as curing agent, it can enumerate for example, isocyanates is solid Agent etc..In addition, there are amine curing agent when hydroxyl or isocyanate group, can also be used to be used as solidification in poly ester urethane resin Agent.These curing agent can be used alone, and two or more can also simultaneously use.

As coloured material, known usual pigments or dyes can be used.When dyed layer is black, example can be enumerated Such as, carbon black；For white when, titanium oxide, calcium carbonate, barium sulfate can be enumerated；For yellow when, yellow ferric oxide can be enumerated；It is red When color, red ferric oxide can be enumerated；For blue when, cyanine blue can be enumerated；For silver color when, aluminium powder can be enumerated；For pearl When, mica titanium valve can be enumerated.Wherein, since the concealment of carbon black is excellent, preferably.Coloured material in dyed layer contains Amount, there is no particular limitation, can be appropriately configured according to concealment as a purpose etc..For example, dyed layer preferably contains It is 10 mass parts or more, 70 colorings below mass part to have binder resin and the binder resin relative to 100 parts by weight Material.If the content of coloured material is more than 70 mass parts, there is a possibility that reduce with the adaptation of roughened layer, therefore not It is preferred that.Above-mentioned coloured material can use commercial goods, the commercial goods of the coloured material as black, can enumerate for example, UTCO-591 BLACK (Dainichiseika Color＆Chemicals Mfg.Co., Ltd manufacture) etc..

According to required, dyed layer can also further contain transparent resin (medium), antioxidant, ultra-violet absorber, The additive of light stabilizer etc..

[adhering agent layer]

As the sticker for the adhering agent layer for forming coloring adhesive tape, there is no particular limitation, such as can be from propylene Acids sticker, rubber sticker, silicone sticker, urethane class sticker, polyesters sticker, styrenic-diene are embedding Suitably selection uses in sticker well known to section copolymer analog sticker etc..Sticker can be used alone or combine two kinds with Upper use.

It can be properly used due to bonding reliability height as sticker, especially acrylic compounds sticker. Acrylic compounds sticker on this basis needed for, contains friendship using acrylic polymer as adherence ingredient or host agent Join the suitable additives such as agent, tackifier, softening agent, plasticizer, filler, age resister, colorant.Acrylic Object, for using (methyl) alkyl acrylate as the polymer of monomer main component, according to required, by using can be with (first Base) alkyl acrylate copolymer monomer (co-polymerized monomer) and be produced.As (methyl) alkyl acrylate, can enumerate For example, (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (first Base) amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid 2- ethylhexyls, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) propylene Sour last of the ten Heavenly stems ester, (methyl) isodecyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate, (first Base) tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) propylene Sour cetyl ester, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, (methyl) acrylic acid nonadecane (methyl) acrylic acid C1-20 Arrcostabs such as base ester, (methyl) acrylic acid eicosane base ester [preferably (methyl) acrylic acid C4-18 Alkyl (alkyl of straight-chain or branched) ester] etc..(methyl) alkyl acrylate, can be according to adherence as a purpose Etc. properly selecting.

In addition, as can with the co-polymerized monomer of (methyl) alkyl acrylate copolymer, can enumerate for example, The carboxyl group-containing monomers such as (methyl) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, crotonic acid or its acid anhydrides；Vinyl sulfonic acid The monomers containing sulfonic group such as sodium；The aromatic ethenyl compounds such as styrene, substituted phenylethylene；The cyano-containings monomer such as acrylonitrile；Second The olefines of alkene, propylene, butadiene etc.；The vinyl esters such as vinylacetate；Vinyl chloride；Acrylamide, Methacrylamide, N-vinyl pyrrolidone, N, the amide-containings monomer such as N- dimethyl (methyl) acrylamide；(methyl) acrylic acid hydroxy alkyl ester, The hydroxyls monomer such as glycerol dimethacrylate；(methyl) acrylate, (methyl) acryloyl morpholine etc. contain amino Monomer；The monomers containing imide such as N-cyclohexylmaleimide, isopropylmaleimide；(methyl) glycidyl Ester, (methyl) acrylic acid methylglycidyl esters etc. contain epoxy based monomers；In addition to 2- methylacryoyloxyethyl isocyanates etc. Other than monomer containing isocyanate group, triethylene glycol two (methyl) acrylate, diethylene glycol two (methyl) third can be enumerated Olefin(e) acid ester, 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 Co-polymerized monomer (the polyfunctionality list of the polyfunctionalities such as olefin(e) acid ester, dipentaerythritol six (methyl) acrylate, divinylbenzene Body) etc..Co-polymerized monomer can be used alone or be used in combination of two or more.As co-polymerized monomer, can suitably make With the modification monomer with the functional groups such as hydroxyl or carboxyl.

(methyl) alkyl acrylate copolymer preferably comprises 0.1~20 mass %, particularly preferably contains 1~10 matter Measure the modification monomer with functional group of %.

The weight average molecular weight of (methyl) alkyl acrylate copolymer is preferably 200,000~2,000,000, particularly preferably 500,000 ~150 ten thousand.In addition, the weight average molecular weight in this specification, polyphenyl is converted into for what is measured by gel permeation chromatography (GPC) method The value of ethylene.

As crosslinking agent, to be with the crosslinking agent of functional group reactions possessed by (methyl) alkyl acrylate copolymer Can, it can enumerate for example, isocyanates crosslinking agent, epoxies crosslinking agent, amine cross-linking agent, melamine class crosslinking agent, nitrogen Third pyridine class crosslinking agent, hydrazine crosslinking agent, aldehyde crosslinking agent, oxazoline classes crosslinking agent, metal alkoxide class crosslinking agent, metallo-chelate Class crosslinking agent, metallic salt crosslinking agent, ammonium salt class crosslinking agent etc., wherein it is preferred that with excellent different of the reactivity of hydroxyl and carboxyl Cyanate crosslinking agent.Crosslinking agent can be used alone or be used in combination of two or more.

Isocyanates crosslinking agent at least contains polyisocyanate compounds.As polyisocyanate compounds, can enumerate Go out for example, 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 Ester ring types polyisocyanate such as acid esters etc.；And biuret body, the chlorinated isocyanurates body of these compounds further can also arrange Enumerate as with the compound of the low molecules containing reactive hydrogen such as ethylene glycol, propylene glycol, neopentyl glycol, trimethylolpropane, castor oil Reactant adduct etc., wherein from the reactive angle of the reactive group with (methyl) acrylate polymers Degree sets out, and the aromatic poly-isocyanate that preferably trimethylolpropane is modified, it is sub- that particularly preferred trimethylolpropane is modified benzene two Methyl diisocyanate and trimethylolpropane 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 within the above range, it is easy aftermentioned adhesion The gel fraction of agent controls in preferred scope.

In addition, in order to improve the adhesion strength of adhering agent layer, tackifying resin is further preferably added.Further, since by adding this A little tackifying resins, can improve tensile strength and tensile break strength, therefore by according to used acrylic copolymer, Tackifying resin is suitably added, tensile strength and tensile break strength can be adjusted.As addition in double-sided color of the invention Tackifying resin in the adhering agent layer of adhesive tape can enumerate for example, the rosin resinoid such as ester compounds of rosin and rosin； The terpene resins such as diterpene polymer or australene-phenol copolymer；The oil tree such as aliphatic category (C5 classes) or aromatic (C9) Fat；In addition it can enumerate, styrene resin, phenolic resin, xylene resin etc..Wherein, it is using with (methyl) propylene It is being slim and have both bonding in adhesion agent composition of the sour N-butyl as the acrylic copolymer of main monomer component When power and heat resistance, it is preferably used in mixed way rosin resinoid and styrene resin.

In addition, according to required, adhering agent layer can also contain silane coupling agent, antistatic agent, antioxidant, ultraviolet light and inhale Receive agent, light stabilizer, softening agent, filler, adjustable refractive index agent, dyestuff, pigment and antirust agent etc..

[stripping film]

Stripping film is preferably with film base material and the peeling agent layer being arranged on the film base material.As film base material, can arrange It enumerates, is formed by polyester such as polyethylene terephthalate, polybutylene terephthalate (PBT), polyethylene naphthalate Polyester film；The polyolefin film formed by polyolefin such as polyethylene, polypropylene, polymethylpentenes；Polycarbonate membrane；Poly-vinegar acid second Any one in the plastic foils such as enester film or the laminated body etc. that is made of these two or more films.

Peeling agent layer is for example formed by the solidfied material of the peeling agent layer formation composition containing remover.As remover Layer formation composition, shells the arbitrary layer being laminated on peeling agent layer as long as peeling agent layer can be assigned from stripping film From function, there is no particular limitation.As remover, can enumerate for example, silicone resin, chain alkyl resin and Alkyd resin etc..

It as silicone remover, can enumerate, addition reaction-type silicone, condensation reaction type silicone, energy ray-curable Silicone.In addition, in order to adjust peeling force, it can also be by the dimethyl silicone polymer of non-functional, phenyl modified silicone, silicon tree Fat, silica, cellulose compound are used as additive.

When coloring adhesive film 2 is taken up roller 410 and rolls, upper surface 15u (structural plane) and the stripping film 30 of roughened layer 15 Lower surface 30d contact.Therefore, the arithmetic average roughness Ra of the lower surface 30d of stripping film 30 is preferably 50nm hereinafter, more excellent It is selected as 40nm or less.The lower limit of the Ra of lower surface 30d is, for example, 10nm.The mean height of the roughness curve element of lower surface 30d Degree Rc is 500nm hereinafter, preferably 450nm or less.The lower limit of the Rc of lower surface 30d is, for example, 100nm.The 10 of lower surface 30d Point mean roughness Rzjis is 800nm hereinafter, preferably 700nm or less.The lower limit of the Rzjis of lower surface 30d is, for example, 100nm。

By make stripping film 30 lower surface 30d Ra, Rc and Rzjis in above range, can make and roughened layer 15 dynamic friction factor is in required range.When coloring adhesive film 2 is taken up roller 410 and rolls as a result, even if roughened layer 15 Upper surface 15u is contacted with the lower surface 30d of stripping film 30, due to Ra, Rc and Rzjis quilt of the lower surface 30d of stripping film 30 It is set in above range, therefore is not easy to cause to colour 2 adhesion of adhesive film and the mixed generation of air, and is passing through roll-to-roll side When formula processes slim coloring adhesive film 2 to batch suitability excellent.

[roughened layer]

About roughened layer, as long as the arithmetic average roughness Ra of upper surface (structural plane), roughness curve element is flat Height Rc and 10 mean roughness Rzjis then do not have its material special restriction in required range.It can pass through Coarse roller surface, is crimped on the surface of upper surface and transfers the thick of roller surface blasting treatment by the method for Corona discharge Treatment The method etc. of rugosity, come adjust roughened layer upper surface 15u Ra, Rc and Rzjis.

Roughened layer preferably comprises inorganic particle.By adjusting average grain diameter, the blended amount etc. of inorganic particle, can be easy Ground adjusts above-mentioned roughness etc..The average grain diameter of inorganic particle can also be more than the thickness of roughened layer.

As binder resin, there is no particular limitation, can enumerate, thermoplastic resin, thermosetting resin, photocuring Resin etc. can enumerate for example, urethane resin, epoxy resin, polyester resin, poly ester urethane resin etc..These resins can be single It solely uses, can also use simultaneously two or more.Wherein, from the aspect of flexibility is excellent, preferred thermoplastic resin, preferably ammonia Ester resin, polyester resin, poly ester urethane resin.Wherein, it from dispersed and adaptation the angle with inorganic particle, bonds Agent resin is more preferably at least one of polyester resin, poly ester urethane resin, further preferably polyester resin.

Roughened layer can also be cured by curing agent.There is no particular limitation for curing agent, can also coordinate bonding Agent resin and suitably selected.When binder resin is poly ester urethane resin, as curing agent, it can enumerate for example, isocyanide Acid esters curing agent etc..In addition, amine hardener conduct can also be used there are when hydroxyl or isocyanate group in poly ester urethane resin Curing agent.These curing agent can be used alone, and can also use simultaneously two or more.In addition, according to required, in roughened layer The additives such as antioxidant, ultra-violet absorber, the light stabilizer being again included in dyed layer can be contained.

As inorganic particle, there is no particular limitation.It can enumerate for example, silica (SiO₂), barium sulfate (BaSO₄)、 In the particles such as titanium oxide, calcium carbonate at least any one.These inorganic particles can be used alone, and can also use two simultaneously Kind or more.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] of silica and barium sulfate：[volume of barium sulfate]), it is controlled in 100：50~100：In the range of 500.In addition, the binder resin relative to 100 mass parts, the content of above-mentioned inorganic particle is excellent It is below mass part to be selected as 40 mass parts or more 150, more than more preferably 50 mass parts 140 is below mass part, further preferably More than 60 mass parts 130 is below mass part, and more than particularly preferably 80 mass parts 125 is below mass part.If relative to 100 mass The content of the binder resin of part, inorganic particle is less than 40 mass parts, then there is the upper surface 15u of roughened layer 15 relative to stripping The dynamic friction factor of lower surface 30d from film 30 is more than possibility of 60 ° of mirror surface lusters more than 50% of 2, roughened layer 15.

The content of inorganic particle more increases, and roughened layer 15 and the adaptation of resin film 11 just reduce.Especially with respect to The binder resin of 100 mass parts, when the content of inorganic particle is 60 mass parts or more, adaptation significantly reduces.This embodiment party In the coloring adhesive film 2 of formula, dyed layer 12 is arranged between resin film 11 and roughened layer 15.The dyed layer 12 is as raising The layer of adaptation between resin film 11 and roughened layer 15 and play a role, relative to the binder resin of 100 mass parts, i.e., When making the content of the inorganic particle in roughened layer 15 to be more than 60 mass parts, the good coloring adhesion of adaptation can also be formed Film 2.

The average grain diameter of above-mentioned particle, there is no particular limitation, but preferably 0.5 μm or more 10 μm hereinafter, more preferably 1 μm or more 5 μm hereinafter, further preferably 1.5 μm or more 3 μm or less.Above-mentioned average grain diameter outside the above range when, due to It is difficult to adjust to the range of the average height (Rc) of required roughness curve element, therefore not preferably.

In addition, average grain diameter refers to, it regard the peak value measured by coulter counter method as average grain diameter.Roughened layer 15 In, inorganic particle and organic granular can also be mixed.There is no particular limitation for organic granular, can enumerate for example poly- methyl The acrylic resin particles such as methyl acrylate particle, granules of polystyrene, polycarbonate pellets, polyurethane resin pearl, asphalt mixtures modified by epoxy resin Fat pearl, polyester resin pearl, poly ester urethane resin bead etc..

In addition, in colouring adhesive film 2, the particle of at least one of silica, barium sulfate is dispersed in roughened When in layer 15, by changing the blend ratio of silica dioxide granule and barium sulfate particle in roughened layer 15, asperities can be expanded Change the selecting range of the color of layer.For example, by the content of relative increase barium sulfate particle, the blue in the color of roughened layer Become stronger.In addition, by the content of opposite reduction barium sulfate particle, 60 ° of mirror surface lusters of roughened layer 15 can be reduced. That is, the blend ratio by changing silica dioxide granule and barium sulfate particle, can further expand the apparent face of graphite flake The selecting range of color.Furthermore, it is possible to further expand the choosing of the exterior aesthetics for the graphite flake 100 for being pasted with coloring adhesive film 2 Select amplitude.

In addition, when particle is dispersed in roughened layer 15, coloring adhesive film 2 is taken up roller 410 when rolling, or coloring is viscous When film 2 and being transferred, scratch equivalent damage is not likely to produce on the upper surface 15u of roughened layer 15.The life of adhesive film 2 is coloured as a result, Yield is further enhanced.

[average grain diameter measurement]

The average grain diameter of inorganic particle and organic granular, there is no particular limitation, but by coulter counter method It is measured.For example, regarding the peak value measured by coulter counter method as average grain diameter.

[measurement of thickness]

Thickness measurement for each layer for colouring adhesive tape 1, there is no particular limitation, but can use well known thickness Meter, such as use film thickness gauge (the film thickness gauge digimicro MH-15M of Nikon Co., Ltd manufactures).

[manufacturing method of coloring adhesive film]

The manufacturing process of the coloring adhesive film of present embodiment is illustrated below, but is not limited to this.Fig. 3 (a)~(c) is the schematic diagram that the manufacturing process of the coloring adhesive film to present embodiment illustrates.In the present embodiment, Coloring adhesive film 2 is manufactured by roll-to-roll mode.For example, manufacture colours adhesive film 2 in an atmosphere.Arrow DR in figure indicates film Traffic direction.Traffic direction DR is corresponding with long side direction DL.

As shown in Fig. 3 (a), by rolling out the rotation of roller 211, stripping film 30 is continuously released from rolling out roller 211, via leading Roller 250a is directed to coating mechanism 220.The surface that peeling agent layer is formed in stripping film 30 (is formed with the table of adhering agent layer 20 Face).

By coating mechanism 220, the coating fluid of adhering agent layer 20 is coated on from the stripping film 30 for rolling out the releasing of roller 211 On.Via deflector roll 250b, the stripping film 30 with adhering agent layer 20 is directed to hothouse 230, at an established temperature, example Such as, 5 minutes or less 10 seconds dry or more.The stripping with adhering agent layer with stripping film 30 and adhering agent layer 20 is formed as a result, From film 51.Stripping film 51 with adhering agent layer is directed to labelling machine 240 via deflector roll 250c.

By labelling machine 240, resin film 11 is glued to the stripping with adhering agent layer for being directed to labelling machine 240 Adhering agent layer 20 from film 51.For example, the stripping film 51 with adhering agent layer is clamped between roller 240b and roller 240c, resin Film 11 rolling out roller 240a between roller 240b and roller 240c by releasing.

Resin film 11 is glued to adhering agent layer 20 as a result, and being formed has stripping film 30, adhering agent layer 20 and resin film 11 Adhesive film 52.Later, via deflector roll 250d, by the rotation of work beam 210, adhesive film 52 is taken up 210 continuous coiling of roller.

Then, as shown in Fig. 3 (b), it is unwrapped the adhesive film 52 that roller 311 has batched, the rotation by rolling out roller 311 is connected It is continuous to release, via deflector roll 350a, it is directed to coating mechanism 320.By coating mechanism 320, the coating fluid of dyed layer 12 is applied It is distributed in resin film 11.

Via deflector roll 350b, it is coated with the adhesive film 52 of dyed layer 12, is directed to hothouse 330, in hothouse 330 It is interior, at an established temperature by dyed layer 12, for example, 5 minutes or less 10 seconds dry or more.It is formed in adhesive film 52 as a result, The coloring adhesive film 53 of dyed layer 12 is provided on resin film 11.Later, via deflector roll 350c, by the rotation of work beam 310, Adhesive film 53 is coloured by continuous coiling in work beam 310.

As shown in Fig. 3 (c), by rolling out the rotation of roller 411, it is unwrapped the coloring adhesive film 53 that roller 411 has batched and is connected It is continuous to release, it is directed to coating mechanism 420 via deflector roll 450a.By coating mechanism 420, the coating fluid of roughened layer 15 is applied It is distributed in resin film 11.

Via deflector roll 450b, the coloring adhesive film 53 for being coated with roughened layer 15 is directed to hothouse 430, defined At a temperature of, for example, 5 minutes or less 10 seconds dry or more.It is formed on the dyed layer 12 of coloring adhesive film 53 and is provided with slightly as a result, The coloring adhesive film 2 of face layer 15.Later, via deflector roll 450c, by the rotation of work beam 410, coloring adhesive film 2 is taken up 410 continuous coiling of roller.

In addition, about the coating method in coating mechanism 220, coating mechanism 320 and coating mechanism 420, it can be appropriate Using for example, scraper rubbing method, scraper for coating method (knife coat method), roller coating method, scraping blade rubbing method (blade Coat method), die coating methods (die coating method), any one method in gravure coating process etc..

Embodiment

Hereinafter, the present invention is described in further detail by embodiment etc., but the scope of the present invention is not by these The restriction of embodiment etc..

[embodiment 1]

The preparation ＞ of ＜ adherence compositions

By by the acrylic acid -2- hydroxyls of the butyl acrylate of 95.5 mass parts, the vinylacetate of 3 mass parts, 1 mass parts The acrylic acid copolymer of ethyl ester and 0.5 mass parts prepares the acrylate copolymer that weight average molecular weight is 1,000,000.Later, lead to It crosses and (is scaled solid constituent relative to the acrylate copolymer of 100 mass parts；It is same as below), add the hydrogen of 25 mass parts Change rosin ester (Arakawa Chemical Industries, Ltd manufactures, pine crystal KE-100, softening point：100 DEG C), the newtrex esters of 4 mass parts (Arakawa Chemical Industries, Ltd manufactures, pensel D-135, softening Point：135 DEG C) and 24 mass parts petroleum resinoid (Mitsui Chemicals Co., Ltd manufacture, FTR6100, softening Point：95 DEG C), it further mixes, forms adhesion ingredient.Adhesion ingredient is dissolved in toluene, modulation solid component concentration is 13 matter Measure the adhesion agent solution of %.

The modulation ＞ of ＜ roughened layer coating solution As

Roughened layer coating solution A, is modulated, i.e., by following methods：Relative to 100 mass parts (be scaled solid at Point) polyester resin (TOYOBO Co., the Ltd manufacture as binder resin：VYLON 20SS), the two of 22 mass parts of addition The sulphur of silicon oxide particle (Tosoh Silica Co., Ltd manufactures, NIPSIL SS50B, 2.1 μm of average grain diameter), 100 mass parts Sour barium particle (Sakai Chemicals Industry Co., Ltd manufactures：BMH, 2.5 μm of average grain diameter), use toluene/first Ethyl ketone (MEK) mixed solvent (toluene：MEK (mass ratio)=50：50) it is 20 mass % to be adjusted to solid component concentration.

＜ colours the manufacture ＞ of adhesive film

The stripping of lift-off processing will be carried out to the single side of polyethylene terephthalate film using silicone remover (LINTEC Co., Ltd manufacture SP-PET251130 to film, and the Ra of the lower surface 30d of stripping film is 34nm, Rc 400nm, Rzjis It is 25 μm for 672nm, thickness) it releases, in such a way that the thickness after drying is 2 μm, on its lift-off processing face, by scraping cutter painting After cloth method is coated with the coating solution of adherence composition, obtained film is heated 1 minute at 90 DEG C, on stripping film Form the adhering agent layer that thickness is 2 μm.Later, as the polyethylene terephthalate film of resin film (Toray Co., Ltd Manufacture ET2F51L, 2 μm of thickness) it is secured at the exposing surface side of above-mentioned coating layer, obtained adhesive film is batched as web-like.

Then, by under conditions of 23 DEG C, 50%RH, the adhesive film for batching as web-like is cured 7 days, is manufactured by removing Film/adhering agent layer (thickness：2 μm)/resin film (thickness：2 μm), constitute adhesive film.

Then, it releases and is taken up as the adhesive film of web-like, by gravure coating process by black ink (Dainichiseika Color＆Chemicals Mfg.Co., Ltd manufacture, " UTCO-591BLACK (NX) ") be coated on surface resin film, further into Row heat treatment forms the dyed layer that thickness is 1 μm on adhesive film.Later, the coloring adhesive film obtained is taken up as web-like.

Then, the coloring adhesive film for being taken up as web-like is released, in such a way that the thickness after drying is 1 μm, passes through intaglio plate Rubbing method is after it colours and is coated with roughened layer coating solution A in layer surface, by the film of acquisition at 90 DEG C, heat treatment 1 minute, form the roughened layer that thickness is 1 μm.Later, obtained coloring adhesive film is batched as web-like.

[embodiment 2]

Other than using roughened layer coating solution B, coloring adhesive film is obtained in the same manner as example 1.

The modulation ＞ of ＜ roughened layer coating solution Bs

Roughened layer coating solution B, is modulated, i.e., by following methods：Relative to 100 mass parts (be scaled solid at Point) polyester resin (TOYOBO Co., the Ltd manufacture as binder resin：VYLON 20SS), 117 mass parts of addition Silicon dioxide microparticle (Tosoh Silica Co., Ltd manufactures, NIPSIL SS50B, 2.1 μm of average grain diameter), uses toluene/first Ethyl ketone (MEK) mixed solvent (toluene：MEK (mass ratio)=50：50) it is 20 mass % to be adjusted to solid component concentration.

[embodiment 3]

Lift-off processing has been carried out to the single side of polyethylene terephthalate film by silicone remover in addition to using Stripping film (LINTEC Co., Ltd manufacture SP-PET381130, and the Ra of the lower surface 30d of stripping film is 29nm, and Rc is 320nm, Rzjis 666nm, thickness are 38 μm) as other than stripping film, it is viscous that coloring is obtained in the same manner as example 1 Film.

[comparative example 1]

Other than not forming roughened layer, coloring adhesive film is obtained in the same manner as example 1.

[comparative example 2]

Other than being not provided with dyed layer, adhesive film is obtained in the same manner as example 1.

[comparative example 3]

In addition in roughened layer in coating solution, addition carbon black (25wt%) as other than colorant, with embodiment 2 Identical mode obtains coloring adhesive film.

[surface roughness measurement]

Using contact surface roughometer (Mitutoyo Co., Ltd manufactures, trade name " SV3000S4 "), with JIS B 0601-2001 are standard, measure roughened layer surface, the surface of dyed layer and stripping film with adhering agent layer opposite side Average height Rc, the arithmetic average roughness Ra and 10 average roughness of the roughness curve element on surface (lower surface 30d) Spend Rzjis.

[60 ° of mirror surface lusters]

Use NIPPON DENSHOKU INDUSTRIES Co., the glossometer " VG7000 " of Ltd manufactures, with JIS K 7105 for the roughened layer of standard test surface or dyed layer surface 60 ° of mirror surface lusters.

[dynamic friction factor measurement]

Be standard with JIS K 7125, measure coloring adhesive film roughened layer surface and stripping film and adhering agent layer The dynamic friction factor on the surface (lower surface 30d) of opposite side.Assumed load is 200g, is tested using accurate universal tensile in measurement Machine AUTOGRAPH AG-IS (SHIMADZU Co., Ltd manufacture).

[measurement of the thickness of each layer]

By simple type number length measurement system (Nikon Co., Ltd manufacture, trade name " digimicro MH-15M "), Measure the thickness of resin film, stripping film and each layer.

It is indicated in table 1：The composition of coloring adhesive film in Examples 1 to 3, comparative example 1~3, indicates in table 2：Embodiment 1 ~3, the surface roughness, the surface roughness of dyed layer of the roughened layer of the coloring adhesive film in comparative example 1~3, stripping film Surface roughness, roughened layer or dyed layer relative to stripping film dynamic friction factor, colour 60 ° of structural plane of adhesive film Mirror surface luster, the design evaluation of coloring adhesive film batched suitability, colour adhesive film and roughened layer and resin film Adaptation.

[batching suitability evaluation]

Visual observations in each process, after being batched with web-like whether there is or not when batching the generation of dislocation, batching whether there is or not adhesion, have No air is mixed into (fold), and suitability is batched according to following benchmark evaluations.Herein, batching in suitability in Fig. 4, A, B tool There are following meanings.

A：It does not stick together completely and air is mixed into, suitability is batched for stable.

B：It sticks together or air is mixed into, and be the range with the possibility that can become problem in practical.

[design evaluation]

The graphite flake " SGS-025-APH " that the coloring adhesive tape joining that stripping film has been stripped is manufactured in Selen, cuts It is segmented into the size of 50mm × 50mm, makes evaluation sample.Under fluorescent light, pass through the coloring adhesive tape of the visual observations sample Surface is evaluated by following benchmark.The visual observations are carried out by object of 5 subjects, carry out comprehensive descision.This Locate, in the design evaluation in Fig. 4, A, B have following meanings.

A：Almost can not visual confirmation coloring adhesive tape surface gloss or dazzle, design it is good.

B：Confirm that gloss or the dazzle on coloring adhesive tape surface, design are impaired by visual observation.

[adaptation evaluation]

As the adaptation evaluation of coloring adhesive film, gridiron pattern disbonded test has been carried out.Using cutter, in coloring adhesive film Roughened layer surface, longitudinal 11, laterally 11 cutting traces are with the interval of 1mm, formation checkerboard, in roughened layer shape At 100 squares of total.100 squares are glued to adhesive tape (NICHIBAN Co., Ltd manufactures, " Sellotape (registered trademark) "), using the gridiron pattern tape method of JIS K 5600-5-6 (cross-section method) as standard, carry out roughened layer Sellotape (registered trademark) disbonded test.Herein, in the adaptation evaluation in Fig. 4, A, B have following meanings.

A：100 squares are not stripped completely.

B：In 100 squares, 1 or more square is stripped.

[table 1]

	Colour the composition of adhesive film
		Embodiment 1	Stripping film/adhering agent layer/resin film/dyed layer/roughened layer
Embodiment 2	Stripping film/adhering agent layer/resin film/dyed layer/roughened layer
		Embodiment 3	Stripping film/adhering agent layer/resin film/dyed layer/roughened layer
Comparative example 1	Stripping film/adhering agent layer/resin film/dyed layer
		Comparative example 2	Stripping film/adhering agent layer/resin film/roughened layer
Comparative example 3	Stripping film/adhering agent layer/resin film/roughened layer (contains colorant)

[table 2]

As shown in table 2, in Examples 1 to 3, the Rc of the roughened layer as top layer is 0.5 μm or more, roughened layer Dynamic friction factor relative to stripping film is 2 or less.At this point, it is " A " to batch suitability.On the other hand, in comparative example 1, make Rc for the dyed layer of top layer is 0.33 μm, is less than 0.5 μm, dyed layer is 2.4 relative to the dynamic friction factor of stripping film, greatly In 2.At this point, it is " B " to batch suitability.

In addition, in Examples 1 to 3,60 ° of mirror surface lusters are 0.5% or more 50% or less.At this point, design is evaluated For " A ".On the other hand, in comparative example 1,60 ° of mirror surface lusters are 63.9%, are more than 50%.At this point, design is evaluated as " B ".

In addition, in Examples 1 to 3, dyed layer, resin film and roughened layer are provided between resin film and roughened layer Adaptation be " A ".In contrast, in comparative example 2,3, although the roughened layer as top layer is provided with, in resin film It is not provided with dyed layer between roughened layer.At this point, the adaptation of resin film and roughened layer is " B ".

More than, embodiments of the present invention are illustrated, but the present invention can be subject to various changes completely, and not only It is defined in the above embodiment.

Claims

1. a kind of coloring adhesive film has for the coloring adhesive film of protection graphite flake：

Stripping film；

Adhering agent layer is arranged at the surface of the stripping film；

Resin film is arranged at the surface with the stripping film opposite side of the adhering agent layer；

Dyed layer is arranged at the surface with the adhering agent layer opposite side of the resin film；And

Roughened layer, containing inorganic particle and binder resin, the average height Rc with roughness curve element is 0.5 μm Above, be 2 structural planes below relative to the dynamic friction factor of the stripping film, and be arranged at the dyed layer with it is described The surface of resin film opposite side.

2. coloring adhesive film according to claim 1, wherein described relative to the binder resin of 100 parts by weight Roughened layer contains the inorganic particles more than 40 mass parts.

3. coloring adhesive film according to claim 1 or 2, wherein the structural plane is below with 1% or more 50% 60 ° of mirror surface lusters.

4. coloring adhesive film according to claim 1, wherein the binder resin contains polyester resin, poly ester urethane At least one of resin.

5. coloring adhesive film according to claim 1, wherein the inorganic particle contains silica dioxide granule and sulfuric acid At least one of titanate particle particle.

6. coloring adhesive film according to claim 1, wherein the dyed layer contains polyester resin, poly ester urethane resin At least one of.

7. coloring adhesive film according to claim 1, wherein the dyed layer is colored as black.

8. coloring adhesive film according to claim 1, wherein the adhering agent layer, the resin film, the dyed layer with And at least one layer in the roughened layer contains colorant.

9. coloring adhesive film according to claim 1, wherein the thickness of the adhering agent layer is 1 μm or more 5 μm or less.

10. coloring adhesive film according to claim 1, wherein the thickness of the resin film is 1 μm or more 6 μm or less.

11. coloring adhesive film according to claim 1, wherein the thickness of the roughened layer be 0.5 μm or more 10 μm with Under.

12. coloring adhesive film according to claim 1, wherein the average grain diameter of the inorganic particle is 10 μ of 50nm or more M or less.

13. coloring adhesive film according to claim 1, wherein dynamic friction of the structural plane relative to the stripping film Factor is 0.5 or more 1.5 or less.

14. coloring adhesive film according to claim 1, wherein the arithmetic average roughness Ra of the structural plane is 0.1 μm Above 1.0 μm or less.

15. coloring adhesive film according to claim 1, wherein the mean height of the roughness curve element of the structural plane It is 0.5 μm or more 5.0 μm or less to spend Rc.

16. coloring adhesive film according to claim 1, wherein 10 mean roughness Rzjis of the structural plane are 1.0 μm or more 9.0 μm or less.

17. coloring adhesive film according to claim 1, wherein the roughness curve element of the lower surface of the stripping film Average height Rc be 500nm or less.

18. coloring adhesive film according to claim 1, wherein the coloring adhesive film is formed long sheet.

19. coloring adhesive film according to claim 1, wherein the adhering agent layer, the resin film, the dyed layer And the roughened layer, it is glued to the surface for the graphite flake being set to inside electronic unit.