CN108611017A - Colour adhesive film - Google Patents

Abstract

The present invention, which provides, a kind of batches that suitability is excellent, design also excellent coloring adhesive film when processing slim coloring adhesive film by roll-to-roll mode.In the coloring adhesive film, it is 0.5 μm of first structure face below that stripping film, which has the average height (Rc) of roughness curve element,.Adhering agent layer is set to the surface with above-mentioned first structure face opposite side of above-mentioned stripping film.Resin film is set to the surface with above-mentioned stripping film opposite side of above-mentioned adhering agent layer.Dyed layer is set to the surface with above-mentioned adhering agent layer opposite side of above-mentioned resin film, is colored as black.Roughened layer is set to the surface with above-mentioned resin film opposite side of above-mentioned dyed layer.With above-mentioned dyed layer opposite side, the average height (Rc) with roughness curve element is 0.5 μm or more, is 2 second structural planes below relative to the dynamic friction factor of above-mentioned stripping film above-mentioned roughened layer.Inorganic particle and binder resin of the above-mentioned roughened layer containing barium sulfate-containing particle.

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 in at least one side of colored matrix materials, wherein the colored matrix materials have：Thickness is 1 μm or more 6 μm or less Resin film layer, thickness be that 1 μm or more 6 μm adhering agent layers and thickness below are 0.5 μm or more 2 μm of dyed layers below, The light transmittance of 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, the coloring film is provided on supporter to be formed by coloring printing ink Dyed layer.In addition, Patent Document 2 discloses the dyed layer is by containing binder resin, coloured material and having The coloring printing ink of the silica dioxide granule of specific average grain diameter is formed.

Coloring adhesive tape for example has adhering agent layer, the resin film being set on adhering agent layer, is set on resin film Dyed layer and the roughened layer that is set on dyed layer.Resin film is, for example, the base material of adhesive tape.Also, dyed layer Such as it in black, works as the shielding layer for keeping the apparent spot of graphite flake not eye-catching.In the coloring adhesive tape, Also it is 10 μm hereinafter, becoming very thin to require slimming, the thickness of adhesive tape.Such coloring adhesive tape, for example, with stripping film It is formed together by roll-to-roll mode.In addition, in roll-to-roll mode, the coloring adhesive tape with stripping film will be (hereinafter, will The state is as coloring adhesive film.) be taken up roller and 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.

It is the first structure faces below 500nm that above-mentioned stripping film, which has the average height (Rc) of roughness curve element,.

Above-mentioned adhering agent layer is arranged at the surface with above-mentioned first structure face opposite side 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, and is colored as black Color.

Above-mentioned roughened layer is arranged at the surface with above-mentioned resin film opposite side of above-mentioned dyed layer.Above-mentioned roughened layer With above-mentioned dyed layer opposite side, the average height (Rc) with roughness curve element is 0.5 μm or more, relative to above-mentioned stripping It is 2 second structural planes below from the dynamic friction factor of film.Above-mentioned inorganic particle of the roughened layer containing barium sulfate-containing particle and Binder resin.

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 above-mentioned coloring adhesive film, relative to the above-mentioned binder resin of 100 parts by weight, above-mentioned roughened layer also may be used To contain above-mentioned inorganic particles more than 40 mass parts.

In above-mentioned coloring adhesive film, above-mentioned inorganic particle further contains silica dioxide granule, above-mentioned roughened In layer, the volume of above-mentioned barium sulfate particle can also be 1/2 or more 5 times of the volume of above-mentioned silica dioxide granule or less.

In above-mentioned coloring adhesive film, above-mentioned binder resin can also contain in polyester resin, poly ester urethane resin It is at least one kind of.

In above-mentioned coloring adhesive film, above-mentioned dyed layer can also containing in polyester resin, poly ester urethane resin extremely It is a kind few.

In above-mentioned coloring adhesive film, above-mentioned dyed layer can also contain binder resin and relative to 100 weight The above-mentioned binder resin of part is 10 mass parts or more, 70 coloured materials below mass part.

In above-mentioned coloring adhesive film, above-mentioned second structural plane can also relative to the dynamic friction factor of the stripping film It is 0.5 or more 1.5 or less.

In above-mentioned coloring adhesive film, the arithmetic average roughness (Ra) of above-mentioned second structural plane may be 0.1 μm Above 1.0 μm or less.

In above-mentioned coloring adhesive film, the average height (Rc) of the roughness curve element of above-mentioned second structural plane also may be used Think 0.5 μm or more 5.0 μm or less.

In above-mentioned coloring adhesive film, 10 mean roughness (Rzjis) of above-mentioned second structural plane or 1.0 μm or more 9.0 μm or less.

In above-mentioned coloring adhesive film, in above-mentioned roughened layer, the above-mentioned dioxy relative to above-mentioned barium sulfate particle The ratio of silicon carbide particle may be that the above-mentioned barium sulfate particle relative to 100 mass parts is 1 mass parts or more, 100 mass parts Below.

In above-mentioned coloring adhesive film, above-mentioned second structural plane can also have 1% or more 50% 60 ° of minute surfaces below Glossiness.

In above-mentioned coloring adhesive film, above-mentioned roughened layer can also have 0.5 μm or more 10 μm of thickness below.

In above-mentioned coloring adhesive film, above-mentioned adhering agent layer can also have 1 μm or more 5 μm of thickness below.

In above-mentioned coloring adhesive film, above-mentioned resin film can also have 1 μm or more 6 μm of thickness below.

In above-mentioned coloring adhesive film, above-mentioned dyed layer can also have 0.5 μm or more 5 μm of thickness below.

In above-mentioned coloring adhesive film, the average grain diameter of above-mentioned silica dioxide granule may be 1 μm or more 10 μm with Under, the average grain diameter of above-mentioned barium sulfate particle may be 1 μm of 50nm or more or less.

Above-mentioned coloring adhesive film can also be formed long sheet.

In above-mentioned coloring adhesive film, above-mentioned adhering agent layer, above-mentioned resin film, above-mentioned dyed layer and above-mentioned roughened Layer, is glued to the surface for the graphite flake being set to inside electronic unit.

Coloring adhesive film in this way even if coloring adhesive tape is taken up roller and rolls is not easy to that coloring is caused to be adhered Adhesive tape adhesion and the mixed generation of air, in the graphite flake for being pasted with coloring adhesive tape, exterior aesthetics are obtained into one Step improves.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；53：Colour adhesive film；100：Graphite flake；101：Double faced adhesive tape；102：Shell；210：It batches Roller；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, one side reference explanation book attached drawing, 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]

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.

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 in work beam Coloring adhesive film 2 on 410 is processed as defined width by roll-to-roll mode by severing, later, is cut into defined Shape, for example, the Protection glue band of graphite flake as protection setting inside electronic unit and used.It is being rolled up for example, being rolled up The coloring adhesive film 2 on roller 410 is taken, with the width of every 100mm by severing, can also be divided into more on width direction DW It is a.The coloring adhesive film 2 being divided can be batched by other work beams again.In addition, in the figure of present embodiment In, using wide 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.In this reality It applies in mode, using stripping film 30 from the composition after the coloring stripping of adhesive film 2 as coloring adhesive tape 1.Adhesive tape 1 is coloured to have Standby 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.Adhering agent layer 20 is arranged at The surface of stripping film 30.For example, adhering agent layer 20 be arranged at stripping film 30 with the lower surface 30d opposite sides of stripping film 30 Surface.For example, adhering agent layer 20 is arranged between stripping film 30 and resin film 11.Resin film 11 is arranged at adhering agent layer 20 The surface with 30 opposite side of stripping film.For example, resin film 11 is arranged between dyed layer 12 and adhering agent layer 20.Resin film 11 be the base material for colouring adhesive film 2.Dyed layer 12 is arranged at the surface with 20 opposite side of adhering agent layer of resin film 11.Example Such as, dyed layer 12 is arranged between resin film 11 and roughened layer 15.Dyed layer 12 is designed to assign coloring adhesive film 2 Property and be arranged.In addition, the layer of the adaptation between dyed layer 12 or raising resin film 11 and roughened layer 15.Roughened layer 15 are arranged at the surface with 11 opposite side of resin film of dyed layer 12.

Fig. 1 (c) indicates an example of the section of roughened layer 15.For example, roughened layer 15 containing inorganic particle 15p and Include the binder resin 15b of inorganic particle 15p.Inorganic particle 15p contains the barium sulfate particle as required ingredient.In asperities In the upper surface 15u for changing layer 15, inorganic particle 15p can expose, and binder resin 15b can also expose.Inorganic particle 15p's Average grain diameter is 10 μm of 50nm or more or less.

In the example of Fig. 1 (b), roughened layer 15 is top layer.That is, on the dyed layer 12 for being colored as black, if It is equipped with the roughened layer 15 of the inorganic particle containing barium sulfate-containing particle and binder resin.Herein, the average grain diameter of barium sulfate For 10 μm of 50nm or more or less.According to the type for the inorganic particle for being contained in roughened layer, the appearance of graphite flake 100 sometimes with Yellow.The exterior aesthetics of graphite flake 100 reduce sometimes as a result,.

In colouring adhesive film 2, it is colored as being provided with containing the inorganic of barium sulfate-containing particle on the dyed layer 12 of black The roughened layer 15 of particle and binder resin.The appearance for being pasted with the graphite flake 100 of coloring adhesive tape 1 as a result, will not band The exterior aesthetics of yellow, graphite flake 100 are improved.For example, the appearance of the entire surface of graphite flake 100, which becomes, has frosted sense Black.

In addition, when colouring adhesive film 2 and being taken up roller 310 and roll, the upper surface 15u of roughened layer 15 and stripping film 30 It is contacted with the surface (lower surface 30d) of 20 opposite side of adhering agent layer.Here, regarding the lower surface 30 of stripping film 30 as first structure Face, the upper surface 15u of roughened layer 15 is as the second structural plane.The upper surface 15u of roughened layer 15 be roughened layer 15 with The surface of 12 opposite side of dyed layer.

The arithmetic average roughness Ra of the upper surface 15u of roughened layer 15 is preferably 0.1 μm or more, more preferably 0.1 μm Above 1.0 μm hereinafter, further preferably 0.2 μm or more 0.5 μm or less.The roughness curve element of roughened layer 15 is averaged Height Rc is 0.5 μm or more, 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 Rzjis of roughened layer 15 are preferably 1.0 μm or more, more excellent Be selected as 1.0 μm or more 9.0 μm hereinafter, further preferably 2.0 μm or more 7.0 μm hereinafter, particularly preferably 2.5 μm or more 5.0 μ M 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 is preferably 0.5 or more, and 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 a possibility that stick together.In addition, dynamic When friction factor is less than 0.5, when coloring adhesive film 2 is taken up roller 410 and rolls, it may occur that 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 preferably 0.5% or more 50% hereinafter, more preferably 1% or more 9% hereinafter, further preferably 1% or more 5% or less.As a result, in the graphite flake 100 for being pasted with coloring adhesive film 2, appearance becomes frosted quality, colours adhesive tape 1 when being arranged inside electronic unit, and coloring adhesive tape 1 seems with electronic unit in integrated, therefore design becomes It is 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.

Colour adhesive film 2 in, there is no particular limitation for the thickness of stripping film 30, but preferably 20 μm or more 80 μm hereinafter, More preferably 20 μm or more 30 μm or less.Here, the thickness in present embodiment, by the aftermentioned thickness measured by multiple points Average value.

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 preferably 1 μm or more 6 μm hereinafter, more preferably 1 μm or more 3 μm or less.If resin The thickness of film 11 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 resin film 11 thickness 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 preferably 0.5 μm or more 10 μm hereinafter, more preferably 0.8 μm or more 3 μm or less.If The thickness of dyed layer 12 is less than 0.5 μm, then the adaptation of resin film 11 and roughened layer 15 reduces, and roughened layer 15 can be from sometimes It is peeled off on resin film 11.In addition, if the thickness of dyed layer 12 is more than 10 μm, colours adhesive film 2 and thicken, is unsatisfactory for slimming It is required that.

The thickness of roughened layer 15 for example be preferably 0.5 μm or more 10 μm hereinafter, more preferably 0.6 μm or more 3.0 μm with Under, further preferably 0.8 μm or more 2.0 μm or less.If the thickness of roughened layer 15 is less than 0.5 μm, cannot get required Structural plane；If the thickness of roughened layer 15 is more than 10 μm, colours adhesive film 2 and thicken, 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.

In addition, the yellow chromaticity (b*) of coloring adhesive tape 1 preferably -1.5 is hereinafter, be more preferably -1.6 hereinafter, further Preferably -1.65 or less.If the yellow chromaticity (b*) for colouring adhesive tape 1 is more than -1.5, with the graphite of coloring adhesive tape The appearance of piece carries yellow sometimes, and the exterior aesthetics of graphite flake 100 reduce sometimes.The lower limiting value of yellow chromaticity (b*) does not have It is special to limit, it is preferred that be -5.0 or more, more preferably -4.0 or more, further preferably -3.0 or more.

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.

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 bonded in 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 configures 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, it colours on adhesive tape 1 due to being provided with roughened layer 15, becomes The appearance of frosted quality.Coloring adhesive tape 1 seems that with electronic unit be in integrated (seeming to combine together) as a result, because This, 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..100 apparent spot of graphite flake becomes not as a result, Eye-catching, the apparent aesthetics of graphite flake 100 is further enhanced.

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 used in resin film, there is no particular limitation, but can enumerate for example, by poly terephthalic acid second Diol ester (PET), polybutylene terephthalate (PBT) (PBT), the polyester that the polyester such as 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, drop ice The resin films such as piece vinyl resin film, cycloolefin resin film；The laminated body etc. of two or more these resin film.Resin film can be by Film made of being stretched uniaxially or biaxially.Wherein, from filming and the precision of the thickness that is required, 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]

Dyed layer is colored as black.The apparent spot of graphite flake 100 becomes not eye-catching as a result, is adjusted to paste The color of the electronic unit of color adhesive tape, since coloring adhesive tape 1 seems (to look like in integrated with electronic unit Combine together), therefore, coloring adhesive tape 1 is not eye-catching, and design is also improved.

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, can also simultaneously use 2 kinds with On.Wherein, from the excellent angle of flexibility, preferably poly ester urethane resin.It is preferred that the vitrifying of above-mentioned poly ester urethane resin Transition temperature (Tg) 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 can also use two or more simultaneously.

As coloured material, known usual black pigment or black dyes can be used, can be enumerated such as carbon black.

According to required, dyed layer can further contain other pigments or dyes, transparent resin (medium), anti-oxidant The additives such as agent, ultra-violet absorber, light stabilizer.The content of coloured material in dyed layer, there is no particular limitation, can be with It is suitably set according to shielding as a purpose etc..For example, dyed layer preferably comprises binder resin and relative to 100 The binder resin of parts by weight is 10 mass parts or more, 70 coloured materials below mass part.

[adhering agent layer]

As the sticker for the adhering agent layer for forming coloring adhesive tape, there is no particular limitation, can be from such as propylene Acids sticker, rubber sticker, silicone sticker, urethane class sticker, polyesters sticker, styrenic-diene are embedding It is suitably selected in sticker well known to section copolymer analog sticker etc..Sticker, which can be used alone or combine two or more, to be made With.

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, iso-crotonic acid or its acid anhydrides；Ethylene sulphur The monomers containing sulfonic group such as sour sodium；The aromatic ethenyl compounds such as styrene, substituted phenylethylene；The cyano-containings monomer such as acrylonitrile； The olefines such as ethylene, propylene, butadiene；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 in combination of two or more kinds.As co-polymerized monomer, tool can be properly used There is the modification monomer of 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 combine two or more use.

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 Lift as with the compound of the low molecules containing reactive hydrogen such as ethylene glycol, propylene glycol, neopentyl glycol, trimethylolpropane, castor oil The adduct etc. of reactant, wherein from the reactive angle of the reactive group with (methyl) acrylate polymers It sets out, the aromatic poly-isocyanate that preferably trimethylolpropane is modified, particularly preferred trimethylolpropane is modified two methylene of benzene Group 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 in above range, the gel of aftermentioned sticker Score is easy to control in preferred scope.

In addition, in order to improve the bonding force 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, antirust agent etc..

[stripping film]

Stripping film is preferably with film base material and the peeling agent layer being 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 made of these films of more than two kinds.

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 (the second structural plane) and the stripping of roughened layer 15 The lower surface 30d (first structure face) of film 30 is contacted.Therefore, the arithmetic average roughness Ra of the lower surface 30d of stripping film 30 is excellent 50nm is selected as hereinafter, more preferably 40nm or less.The lower limit of the Ra of lower surface 30d is, for example, 10nm.The roughness of lower surface 30d The average height Rc of curve element is 500nm hereinafter, preferably 450nm or less.The lower limit of the Rc of lower surface 30d is, for example, 100nm.10 mean roughness Rzjis of lower surface 30d are preferably 800nm hereinafter, more preferably 700nm or less.Lower surface The lower limit of the Rzjis of 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 in required range.When coloring adhesive film 2 is taken up roller 310 and rolls as a result, even if roughened layer 15 is upper Surface 15u is contacted with the lower surface 30d of stripping film 30, since Ra, Rc and Rzjis of the lower surface 30d of stripping film 30 are set It in above range, therefore is not easy to cause to colour 2 adhesion of adhesive film and the mixed generation of air, and adds by roll-to-roll mode When the slim coloring adhesive film 2 of work to batch suitability excellent.

[roughened layer]

As long as the arithmetic average roughness Ra of the second structural plane of roughened layer, that is, upper surface, roughness curve element is flat Height Rc and 10 mean roughness Rzjis are in required range, then to the material of roughened layer, there is no particular limitation. Can also by the method for Corona discharge Treatment, blasting treatment, coarse roller surface is crimped on the surface of upper surface by transfer The method of the roughness of roller surface, come adjust roughened layer upper surface 15u Ra, Rc and Rzjis.

Inorganic particle and binder resin of the roughened layer containing barium sulfate-containing particle.By adjusting the flat of inorganic particle Equal grain size, blended amount etc. can be easy to adjust above-mentioned roughness etc..The average grain diameter of inorganic particle can also be more than roughened layer Thickness.

As binder resin, there is no particular limitation, can enumerate, thermoplastic resin, thermosetting resin, photocuring tree Fat etc. can enumerate for example, urethane resin, epoxy resin, polyester resin, poly ester urethane resin etc..These resins can be independent It uses, two or more can also be used simultaneously.Wherein, from the aspect of flexibility is excellent, preferred thermoplastic resin, preferably urethane Resin, polyester resin, poly ester urethane resin.Wherein, from dispersed and adaptation the angle with inorganic particle, binder 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 curing agent conduct can 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 two or more simultaneously.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.

The inorganic particle or organic granular that can also be mixed in roughened layer 15 other than sulfuric acid titanate particle.In this way, By blending other particles, the selecting range of the color of roughened layer 15 can be expanded.

There is no particular limitation for organic granular, can enumerate for example, acrylic resins such as poly methyl methacrylate particles Particle, granules of polystyrene, polycarbonate pellets, urethane resin bead, epoxy bead, polyester resin pearl, poly ester urethane resin Pearl etc..These organic granulars can be used alone, and can also use two or more simultaneously.

As inorganic particle, there is no particular limitation, can enumerate for example, silica (SiO₂), titanium oxide, calcium carbonate In equal particles at least any one.These inorganic particles can be used alone, and can also use two or more simultaneously.Wherein, from Adjust the angle of the difficulty of the difficulty of the selecting range of mirror surface luster and color, the difficulty of granularity adjustment and acquisition It sets out, preferably inorganic particle, more preferable silica dioxide granule.

The volume ratio ([volume of silica] of silica and barium sulfate：[volume of barium sulfate]) it is controlled in 100： 50~100：500 range.Preferably it is silica dioxide granule by the volume settings of barium sulfate particle that is, in roughened layer 1/2 times or more 5 times or less of volume.In roughened layer, the ratio (quality) of silica dioxide granule and barium sulfate particle is phase For the barium sulfate particle of 100 mass parts, silica dioxide granule is preferably that 1 mass parts or more 100 are below mass part, more preferably More than 5 mass parts 80 is below mass part, and more than further preferably 10 mass parts 50 is below mass part.In addition, barium sulfate-containing The content of inorganic particle is, relative to the binder resin of 100 mass parts, more than preferably 40 mass parts 150 is below mass part, More than more preferably 50 mass parts 140 is below mass part, and more than further preferably 60 mass parts 130 is below mass part, especially It is more than preferably 80 mass parts that 125 is below mass part.Relative to the binder resin of 100 mass parts, if the inorganic particulate added The content of grain is less than 40 mass parts, then there is the dynamic of the lower surface 30d of the upper surface 15u of roughened layer 15 relative to stripping film 30 Friction factor is more than possibility of 60 ° of mirror surface lusters more than 50% of 2, roughened layer 15.

If the content of inorganic particle increases, roughened layer 15 and the adaptation of resin film 11 reduce.Especially when opposite In the binder resin of 100 mass parts, when the content of inorganic particle is 60 mass parts or more, adaptation significantly reduces.In this reality In the coloring adhesive film 2 for applying mode, dyed layer 12 is arranged between resin film 11 and roughened layer 15.12 conduct of dyed layer It improves the layer of the adaptation between resin film 11 and roughened layer 15 and plays a role, the binder tree relative to 100 mass parts It is good can also to form adaptation even if the content of inorganic particle in roughened layer 15 is 60 mass parts or more for fat Color adhesive film 2.

There is no particular limitation for the average grain diameter of above-mentioned particle, but preferably 0.5 μm or more 10 μm hereinafter, more preferably 1 μ 5 μm of m or more is hereinafter, further preferably 1.5 μm or more 3 μm or less.Above-mentioned average grain diameter beyond above range when, due to difficulty 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.

In addition, in colouring adhesive film 2, at least one kind of particle in silica, barium sulfate is dispersed in roughened layer When in 15, by changing the blend ratio of silica dioxide granule and barium sulfate particle in roughened layer 15, it can expand roughened The selecting range of the color of layer 15.For example, by the amount of relative increase barium sulfate particle, the blue in the color of roughened layer 15 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 in graphite flake 100 in appearance Color selecting range.

In addition, when particle is dispersed in roughened layer 15, when coloring adhesive film 2 is taken up, or coloring adhesive film 2 is moved When sending, scratch equivalent damage is not likely to produce on the upper surface 15u of roughened layer 15.The productivity of coloring adhesive film 2 is further as a result, It is improved.

In addition, when particle is dispersed in roughened layer 15, coloring adhesive film 2 is taken up when work beam 410, or coloring When adhesive film 2 is transferred, scratch equivalent damage is not likely to produce on the upper surface 15u of roughened layer 15.Adhesive film 2 is coloured as a result, Productivity is further enhanced.

[average grain diameter measurement]

The average grain diameter of inorganic particle and organic granular, there is no particular limitation, measured by coulter counter method. 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, the adhesive film 52 for being coated with dyed layer 12 is directed to hothouse 330, in defined temperature Under, for example, 5 minutes or less 10 seconds dry or more.It is formed in as a result, on the resin film 11 of adhesive film 52 and is provided with dyed layer 12 Colour adhesive film 53.Later, via deflector roll 350c, by the rotation of work beam 310, coloring adhesive film 53 is by continuous coiling in volume Take roller 310.

It by rolling out the rotation of roller 411, is unwrapped the coloring adhesive film 53 that roller 411 has batched and is continuously released, via leading Roller 450a is directed to coating mechanism 420.By coating mechanism 420, the coating fluid of roughened layer 15 is applied to 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 ChemicalsCo., 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 mass % Adhesion agent solution.

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 manufactures, " UTCO-591 BLACK (NX) ") it is coated on surface resin film, further Heated, forms the dyed layer that thickness is 1 μm on adhesive film.Later, obtained coloring adhesive film is batched as volume Shape.

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 under the conditions of 90 DEG C, heating Processing 1 minute forms 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 C, coloring adhesive film is obtained in the same manner as example 1.

The modulation ＞ of ＜ roughened layer coating solution Cs

Roughened layer coating solution C, 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), 100 mass parts of addition Barium sulfate particles (Wako Pure Chemical Industries, Ltd manufactures：BMH, 2.0 μm of average grain diameter), using toluene/ Methyl ethyl ketone (MEK) mixed solvent (toluene：MEK (mass ratio)=50：50) it is 20 mass % to be adjusted to solid component concentration.

[comparative example 1]

Other than having used roughened layer coating solution B, coloring adhesion is obtained in the same manner as example 1 Film.

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.

[surface roughness measurement]

Using contact surface roughometer (Mitutoyo Co., Ltd manufactures, trade name " SV3000S4 "), with JIS B 0601-2001 are standard, measure average height Rc, the arithmetic average roughness of the roughness curve element of roughened layer surface Ra and 10 mean roughness Rzjis.

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

[60 ° of mirror surface lusters]

Use NIPPON DENSHOKU INDUSTRIES Co., the glossometer " VG7000 " of Ltd manufactures, with JIS K 7105 are measured for standard.

[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, and universal tensile testing machine is used in measurement TENSILON (A＆D Company, Limited manufacture).

It is indicated in table 1：The construction of adhesive film is coloured in Examples 1 to 2, comparative example 1, is indicated in table 2,3：Embodiment 1~ 2, the surface roughness, the surface roughness of dyed layer, the surface roughness of stripping film of the roughened layer in comparative example 1, asperities Change layer or dyed layer relative to the dynamic friction factor of stripping film, the volume of 60 ° of mirror surface lusters for colouring adhesive film, coloring adhesive film Take suitability, the design evaluation for colouring adhesive film and the adaptation of roughened layer and resin film.

[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, suitability is batched in the table 3, 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 coloring adhesive tape joining that stripping film has been stripped is in Kaneka Co., the graphite flake of Ltd manufactures " GRAPHINITY25 μm " is cut into the size of 50mm × 50mm, makes evaluation sample.Under fluorescent light, pass through visual observations The coloring adhesive tape surface of the sample, is evaluated by following benchmark.The visual observations, using 5 subjects as object into Row carries out comprehensive descision.Herein, in the design evaluation in table 3, A, C have following meanings.

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

C：Although almost can not visual confirmation coloring adhesive tape surface gloss or dazzle, yellow sense is strong slightly, with A It is poor compared to design.

[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, on roughened layer It is formed and amounts to 100 squares.100 squares be glued to adhesive tape (NICHIBAN Co., Ltd manufacture, " Sellotape (registered trademark) "), using the gridiron pattern tape method of JIS K 5600-5-6 (cross-section method) as standard, carry out asperities Change Sellotape (registered trademark) disbonded test of layer.Herein, in the adaptation evaluation in table 3, A, B have following meanings.

A：100 squares are not stripped completely.

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

[measurement of yellow chromaticity (b*)]

In the environment of 23 DEG C, 50%RH (relative humidity), coloring adhesive film is cut into the size of 50mm × 50mm.It Afterwards, stripping film is removed, and adhering agent layer is glued to glass plate, makes test specimen.Later, color is divided by color computer Poor instrument (NIPPON DENSHOKU INDUSTRIES Co., Ltd manufactures, Spectro photometer SE6000), with JIS K 7105 is standard, measures the yellow chromaticity (b*) of test specimen.

[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
		Comparative example 1	Stripping film/adhering agent layer/resin film/dyed layer/roughened layer

[table 2]

[table 3]

As shown in Table 2,3, in embodiment 1,2, the Rc of the roughened layer as top layer is 0.5 μm or more, roughened Layer is 2 or less relative to the dynamic friction factor of stripping film.At this point, it is " A " to batch suitability.

In addition, in embodiment 1,2,60 ° of mirror surface lusters are 0.5% or more 50% or less.But as inorganic particulate Grain, 60 ° of mirror surface lusters for being mixed with the embodiment 1 of silica dioxide granule are lower than 60 ° of mirror surface lusters of embodiment 2.Into One step, in embodiment 1,2, yellow chromaticity is -1.5 or less.At this point, design is evaluated as " A ".

In addition, in embodiment 1,2, dyed layer, resin film and roughened layer are provided between resin film and roughened layer Adaptation is " A ".

In contrast, in comparative example 1, yellow chromaticity is all higher than -1.5, and design is evaluated as " C ".

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 (19)

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

Stripping film, the average height Rc with roughness curve element are the first structure faces below 500nm；

Adhering agent layer is arranged at the surface with first structure face opposite side 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 is colored as black；With And

Roughened layer is arranged at the surface with the resin film opposite side of the dyed layer, and in the dyed layer Opposite side, the average height Rc with roughness curve element are 0.5 μm or more, relative to the dynamic friction factor of the stripping film For 2 second structural planes below, and the inorganic particle containing barium sulfate-containing particle and binder resin.

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 inorganic particle further contains silica Grain.

4. coloring adhesive film according to claim 1, wherein the binder resin contains polyester resin, poly ester urethane It is at least one kind of in resin.

5. coloring adhesive film according to claim 1, wherein the dyed layer contains polyester resin, poly ester urethane resin In it is at least one kind of.

6. coloring adhesive film according to claim 1, wherein the dyed layer contain binder resin and relative to The binder resin of 100 parts by weight is 10 mass parts or more, 70 coloured materials below mass part.

7. coloring adhesive film according to claim 1, wherein second structural plane rubs relative to the dynamic of the stripping film It is 0.5 or more 1.5 or less to wipe factor.

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

9. coloring adhesive film according to claim 1, wherein the roughness curve element of second structural plane is averaged Height Rc is 0.5 μm or more 5.0 μm or less.

10. coloring adhesive film according to claim 1, wherein 10 mean roughness Rzjis of second structural plane It is 1.0 μm or more 9.0 μm or less.

11. coloring adhesive film according to claim 3, wherein in the roughened layer, relative to the barium sulfate The ratio of the silica dioxide granule of grain is, is 1 mass parts or more 100 relative to the barium sulfate particle of 100 mass parts It is below mass part.

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

13. coloring adhesive film according to claim 1, wherein the roughened layer is below with 0.5 μm or more 10 μm Thickness.

14. coloring adhesive film according to claim 1, wherein the adhering agent layer has 1 μm or more 5 μm of thickness below Degree.

15. coloring adhesive film according to claim 1, wherein the resin film has 1 μm or more 6 μm of thickness below.

16. coloring adhesive film according to claim 1, wherein the dyed layer has 0.5 μm or more 5 μm of thickness below Degree.

17. coloring adhesive film according to claim 3, wherein the average grain diameter of the silica dioxide granule is 1 μm or more 10 μm hereinafter, the average grain diameter of the barium sulfate particle is 1 μm of 50nm or more 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.