Specific implementation mode
Hereinafter, the embodiment for being directed at the utility model while with reference to Figure of description illustrates.Sometimes eachXYZ axial coordinates are imported in Figure of description.
[composition of adhesive film]
Fig. 1 (a) is stereoscopic schematic diagram of the adhesive film of present embodiment under the state that is wound.Fig. 1 (b) is this implementationThe diagrammatic cross-section of the adhesive film of mode.Fig. 1 (c) is the graphite flake for the adhesive tape for being pasted with present embodiment via double faced adhesive tapeBand and be attached at the diagrammatic cross-section of the state on shell.
As shown in Fig. 1 (a), the adhesive film 2 of present embodiment, such as be wound in work beam along long side direction DL and (batchCore) on 210.The length (overall length) on long side direction DL for the adhesive film 2 being wound on work beam 210 be, for example, 6000m withUpper 10000m or less.The length of adhesive film 2 on the width direction DW (short side direction) vertical with long side direction DL is, for example, 800mm or more 1500mm or less.
The cross-section structure of adhesive film 2 is illustrated below.
As shown in Fig. 1 (b), adhesive film 2 has resin film 11, adhering agent layer 20, stripping film 30.In the example of Fig. 1 (b)In, adhesive film 2 is laminated with the sequence of 30/ adhering agent layer of stripping film, 20/ resin film 11.In the present embodiment, sometimes will30 side of stripping film is used as downside, using 11 side of resin film as upside.It, can be from stripping film 30 and adhesion in adhesive film 2Stripping film 30 is removed on the interface of oxidant layer 20.In addition, when adhesive film 2 is taken up the winding of roller 210, the outermost layer as adhesive film 2The upper surface 11u on surface is in contact with the lower surface 30d of stripping film 30.
Stripping film 30 is set on 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 the lowest level of adhesive film 2.
There is no particular limitation for the thickness of stripping film 30, but from can be easily by stripping film 30 at 25 DEG CThe angle that Young's modulus (MPa) and the product of thickness (m) are adjusted in aftermentioned range is set out, and preferably 1 × 10-5M or more 1 ×10-4M is hereinafter, more preferably 1.5 × 10-5M or more 8 × 10-5M is hereinafter, further preferably 1.7 × 10-5M or more 5 × 10-5mHereinafter, particularly preferably 2 × 10-5M or more 3 × 10-5M or less.Herein, the thickness of present embodiment refers to being measured by multiple pointsThickness average value.In addition, when stripping film 30 has film base material and the peeling agent layer being set on the film base material, it is above-mentioned" thickness of stripping film 30 " refers to the thickness of film base material.If the thickness of stripping film 30 is less than 1 × 10-5Then there is the place of adhesive film in mReduced performance is managed, when coating on stripping film 30 includes the solution of adherence composition, is heated, stripping film 30It is heat-shrinked and increases, fold or streak are generated on adhesive film 2, process the case where suitability reduces.On the other hand, if stripping film 30Thickness be more than 1 × 10-4M, then when removing stripping film 30, the laminated body of resin film 11 and adhering agent layer 20 was (hereinafter, shouldState is used as " adhesive tape 4 ".) deform, it is difficult to stripping film 30 is removed from adhering agent layer 20.
In addition, there is no particular limitation for the Young's modulus at 25 DEG C of stripping film 30, but from can easily will strippingThe angle that the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C from film 30 is adjusted in aftermentioned range is set out, preferablyFor 500MPa or more 10000MPa hereinafter, more preferably 2000MPa or more 6000MPa hereinafter, further preferably 3500MPa withUpper 50 00MPa or less.
In addition, the Young's modulus (MPa) at 25 DEG C of stripping film 30 and the product of thickness (m) be 0.3MPam hereinafter,Preferably 0.25MPam hereinafter, more preferably 0.2MPam hereinafter, further preferably 0.15MPam or less.The productThe lower limit of value there is no particular limitation, but preferably 0.01MPam or more, more preferably 0.05MPam or more, furtherPreferably 0.1MPam or more.
In addition, under the peeling rate of 300mm/min, the bonding plane 20b's relative to adhering agent layer 20 of stripping film 30180 ° of peeling forces are 40mN/25mm hereinafter, preferably 35mN/25mm is hereinafter, more preferably 30mN/25mm or less.Lower limit does not haveIt is special to limit, but preferably 5m N/25mm or more, more preferably 10mN/25mm or more, further preferably 15mN/25mmMore than.If the peeling force of stripping film 30 is less than 5mN/25mm, there are following situations, i.e.,：Adhesion is being manufactured in a manner of roll-to-rollWhen film, in the adhesive film after batching adhesive film, processing being batched, exists and generated on interface of the stripping film 30 with adhering agent layer 20Float, there is a situation where peel off for stripping film 30 in the processing such as keeping, the transport of adhesive film.In order to by 180 ° of above-mentioned peeling forces40mN/25mm is set as hereinafter, needing to properly select adhering agent layer 20 and stripping film 30.
According to the adhesive film 2 with such stripping film 30, even if it is the overall thickness of resin film 11 and adhering agent layer 20It is not easy on adhesive film 2 in the adhesive film 2 after batching adhesive film 2, processing being batched for 10 μm of very thin compositions belowGenerate fold or relaxation.It further, can be effectively from adhering agent layer 20 when removing stripping film 30 from adhering agent layer 20Remove stripping film 30.
For example, if the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is less than 0.01MPaM, then when coating on stripping film 30 includes the solution of adherence composition, heated, stripping film 30 is easy to happen heatIt shrinks, fold or streak is generated on adhesive film 2, processing suitability reduces, and the rigidity of stripping film 30 itself is too weak, it is difficult to will shellIt is removed from film 30.If the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is more than 0.3MPam,Then the rigidity of stripping film 30 itself is strong, and when removing stripping film 30, adhesive film 2 deforms, and is easy to generate pleat on adhesive film 2Wrinkle or relaxation, therefore not preferably.Further, after peeling stripping film 20 off, fold or pine are also easy tod produce on adhesive tape 4It relaxes, therefore not preferably.
In addition, even if the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is 0.3MPamHereinafter, if the peeling force of stripping film 30 is more than 40mN/25mm, stripping film 30 and the adherence of adhering agent layer 20 are too strong, there is strippingStripping, a part for adhering agent layer 20 and stripping film 30 are difficult to from its interface with adhering agent layer 20 simultaneously from resin from film 30The possibility removed on film 11, or be easy to produce on the adhesive film 2 after peeling stripping film 30 off if even if stripped of stripping film 30Raw fold or relaxation.
The arithmetic average roughness Ra of the lower surface 30d of stripping film 30 is preferably 50nm hereinafter, more preferably 40nm or less.The lower limit of the Ra of lower surface 30d is, for example, 10nm.The average height Rc of the roughness curve element of 30 d of lower surface is preferably500nm is hereinafter, more preferably 450n m or less.The lower limit of the Rc of lower surface 30d is, for example, 100nm.10 points of lower surface 30d are flatEqual roughness Rzjis is preferably 800nm hereinafter, more preferably 700nm or less.The lower limit of the Rzjis of lower surface 30d is, for example,100nm。
By the way that the average height Rc of the roughness curve element of the lower surface 30d of stripping film 30 is set as above range, glueWhen film 2 and being taken up roller 210 and roll, even if the following table of the upper surface 11u and stripping film 30 of outermost surface as adhesive film 2Face 30d is in contact, and adhesive film 2 is not easy to cause adhesion and air is mixed into, and slim adhesion is processed by roll-to-roll modeWhen film 2 to batch suitability excellent.
For example, the upper surface 11u of outermost surface as adhesive film 2, lower surface 30d relative to stripping film 30Dynamic friction factor there is no particular limitation, but preferably 5 hereinafter, more preferably 4 hereinafter, further preferably 3 or less.It is dynamic to rubThere is no particular limitation for the lower limit of wiping factor, but preferably 0.2 or more, more preferably 0.5 or more, further preferably 1 or more.If dynamic friction factor is within the above range, adhesive film 2 is not easy to cause adhesion and air is mixed into, and is processed by roll-to-roll modeWhen slim adhesive film 2 to batch suitability excellent.
Adhering agent layer 20 is set on the surface with lower surface 30d opposite sides of stripping film 30.Adhering agent layer 20 is set toBetween stripping film 30 and resin film 11.Adhering agent layer 20 has the bonding plane 20a (the first bonding plane) fitted on resin film 11With the second bonding plane 20b (the second bonding plane) fitted on stripping film 30.
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 more3 μm or less.If the thickness of adhering agent layer 20 is less than 1 μm, the adherence between adhering agent layer 20 and graphite flake is low, exists and is difficult toAdequately protect graphite flake the case where.If the thickness of adhering agent layer 20 is more than 5 μm, adhesive film 2 thickens, and is unsatisfactory for wanting for slimmingIt asks.
Resin film 11 is set on the surface with 30 opposite side of stripping film of adhering agent layer 20.Resin film 11 is adhesive film 2Base material.
There is no particular limitation for the Young's modulus at 25 DEG C of resin film 11, but preferably 500M Pa or more10000MPa hereinafter, more preferably 2000MPa or more 6000MPa hereinafter, further preferably 3500MPa or more 5000MPa withUnder.By the way that the Young's modulus at 25 DEG C of resin film 11 is set as above range, even if excellent if thickness thin processing performance.
There is no particular limitation for the thickness of resin film 11, is 1 μm or more 6 μm hereinafter, preferably 1 μm or more 3 μm or less.If the thickness of resin film 11 is less than 1 μm, the strength reduction of resin film 11, it becomes difficult to be transported by roll-to-roll mode.If the thickness of resin film 11 is more than 6 μm, adhesive film 2 thickens, and is unsatisfactory for the requirement of slimming.
In addition, the overall thickness of resin film 11 and adhering agent layer 20 is 10 μm or less.Preferably 2 μm or more 10 μm hereinafter, morePreferably 2.5 μm or more 9 μm hereinafter, further preferably 3 μm or more 8 μm hereinafter, particularly preferably 3.5 μm or more 6 μm withUnder.If the overall thickness of resin film 11 and adhering agent layer 20 is less than 2 μm, the strength reduction of resin film 11 and adhering agent layer 20 becomesIt must be difficult to be transported by roll-to-roll mode.If the thickness of resin film 11 and adhering agent layer 20 is more than 10 μm, adhesive film 2 becomesThickness is unsatisfactory for the requirement of slimming.If resin film 11 and adhering agent layer 20 overall thickness be 10 μm hereinafter, if since it is poleIt is thin, therefore adhesive tape 4 can be configured at electronic product in the case where not harming the inner space of small-sized electronic productIt is interior.
In addition, (peel angle is 180 ° to the adhesion strength relative to stainless steel plate of adhesive tape 4, and peeling rate isLower limit 300mm/min) is preferably 1N/25mm or more, more preferably 1.2N/ 25mm or more, further preferably 1.3N/25mm or more.On the other hand, the upper limit of adhesion strength (peel angle is 180 °, peeling rate 300mm/min) is not specialLimit, but preferably 10N/25mm hereinafter, more preferably 7N/25mm hereinafter, further preferably 5N/25mm hereinafter, especially excellentIt is selected as 2.5N/25mm or less.
By being above range by the lower limit set of adhesion strength, even if the very thin composition that adhesive tape is 10 μm, is being rolled upTake adhesive film 2, processing batch after adhesive film 2 when, be not easy between stripping film 30 and adhering agent layer 20 generate float orGenerate fold or relaxation.In addition, if adhesion strength is above range, even if adhesive tape can if being 10 μm of very thin compositionIt is enough to be suitably adhered on graphite flake.Further, it if adhesion strength is above range, becomes easy from having been carried out primary attachingAdherend on remove and re-start attaching.
As shown in Fig. 1 (c), the resin film 11 of stripping film 30 and laminated body (adhesive tape 4) example of adhering agent layer 20 are peeled offIt can such as be attached on graphite flake 100.For example, the exposed surface of adhering agent layer 20 is adhered on the surface of graphite flake 100.ThisOutside, graphite flake 100 is attached at via double faced adhesive tape 1 01 on shell 102 (for example, electronic unit).As a result, in graphite flakeIn 100, heat is spread along Z-direction also along X-direction and Y direction.The heat quilt distributed as a result, from electronic unitEffectively radiate.Specifically, it is preferable that adhesive tape 4 is attached on graphite flake set in electronic unit inside.
Further, since the laminated body (adhesive tape 4) of resin film 11 and adhering agent layer 20 is very thin, therefore can there is no harm inIn the case of the inner space of evil small-sized electronic product, adhesive tape 4 is configured in electronic product, thermal diffusivity is not being damagedMeanwhile preventing the missing of graphite flake 100, peeling etc., to be protected.
Like this, even if when the overall thickness of resin film 11 and adhering agent layer 20 is very thin 10 μm or less, by that will glueThe product for the Young's modulus and thickness at 25 DEG C of the peeling force and stripping film 30 between oxidant layer 20 and stripping film 30 is setFor specific range, stripping film 30 becomes easy to be removed from adhering agent layer 20.In addition, even if adhesive film 30 is attached at stoneIt when on ink sheet 100, is not easy to generate fold or relaxation on adhesive film 2, attaching suitability becomes excellent.Further, passing throughWhen roll-to-roll mode manufactures very thin adhesive film 2, or in the adhesive film 2 after batching adhesive film 2, processing being batched, it is not easy viscousIt and generates fold or relaxation on film 2, processing suitability becomes excellent.
In adhesive film 2, characteristic according to its occupation mode or as a purpose, adhesive film 2 can also have in addition to resinLayer other than film 11, adhering agent layer 20, stripping film 30.As such layer, such as dyed layer, roughened layer, hard can be enumeratedThe functional layers such as coating, adhesive layer, reflecting layer, antiglare layer, conductive film, insulating layer；Or printing layer, lettering layer, coating film etc.Decorative layer etc..As an example, below to be formed on resin film 11 dyed layer 12 and roughened layer 15 composition it is viscousFilm to illustrate (hereinafter, sometimes referred to as coloring adhesive film).
[composition of coloring adhesive film]
Fig. 2 (a) is the diagrammatic cross-section of the coloring adhesive film of present embodiment.Fig. 2 (b) is to be pasted with present embodimentThe graphite flake of coloring adhesive tape is attached at the diagrammatic cross-section of the state on shell via double faced adhesive tape.
As shown in Fig. 2 (a), coloring adhesive film 3 have resin film 11, adhering agent layer 20, stripping film 30, dyed layer 12, withAnd roughened layer 15.In the example of Fig. 2 (a), coloring adhesive film 3 is coloured with 30/ adhering agent layer of stripping film, 20/ resin film 11/The sequence of 12/ roughened layer 15 of layer is laminated.
Dyed layer 12 is set on the surface with 20 opposite side of adhering agent layer of resin film 11.For example, dyed layer 12 is arrangedBetween resin film 11 and roughened layer 15.Dyed layer 12 is set for assigning coloring adhesive film 3 with design.In addition, coloringLayer 12 is the layer for improving the adherence between resin film 11 and roughened layer 15.Roughened layer 15 is set to dyed layer 12With on the surface of 11 opposite side of resin film.
Roughened layer 15 is top layer in the example of Fig. 2 (a).When coloring adhesive film 3 is taken up roller and rolls, asThe upper surface 15u of the outermost surface of color adhesive film 3 is in contact with the lower surface 30d of stripping film 30.
There is no particular limitation by the arithmetic average roughness Ra of roughened layer 15, but preferably 0.1 μm or more, more preferablyFor 0.1 μm or more 1.0 μm hereinafter, further preferably 0.2 μm or more 0. 5 μm or less.The roughness curve of roughened layer 15 is wantedElement average height Rc be 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 withUnder, further preferably 1.0 μm or more 2.0 μm or less.10 mean roughness Rzji s of roughened layer 15 are not specialIt limits, but preferably 1.0 μm or more, more preferably 1.0 μm or more 9.0 μm are hereinafter, further preferably 2.0 μm or more 7.0 μmHereinafter, particularly preferably 2.5 μm or more 5. 0 μm or less.
It, can be by 60 ° of minute surfaces of aftermentioned roughened layer 15 by making roughened layer 15 that there is the structural plane of above rangeGlossiness is set as defined range.The setting when graphite flake for being pasted with coloring adhesive film 3 being set to inside electronic unit as a result,Meter property is excellent.
For example, there is no particular limitation for the dynamic friction factor of the lower surface 30d relative to stripping film 30 of upper surface 15u,But preferably 5 hereinafter, more preferably 4 hereinafter, further preferably 3 or less.There is no particular limitation for the lower limit of dynamic friction factor,But preferably 0.5 or more, more preferably 1 or more, further preferably 2 or more.If dynamic friction factor is above range,It when coloring adhesive film 3 is taken up roller and rolls, is not easy to cause adhesion and air is mixed into, and processed by roll-to-roll mode slim viscousWhen film 2 to batch suitability excellent.
In addition, there is no particular limitation for 60 ° of mirror surface lusters of the roughened layer 15 with such roughness, it is0.5% or more 50% hereinafter, preferably 1% or more 9% hereinafter, more preferably 1% or more 5% or less.Accordingly, for being pasted withPeel the graphite flake of the laminated body of stripping film 30 off from coloring adhesive film 3, that is, for being pasted with 20/ resin film of adhering agent layerLaminated body by the state (hereinafter, be known as " coloring adhesive tape made of the sequence stacking of 11/ dyed layer, 12/ roughened layer 151 ") graphite flake, appearance is in unglazed style, when that will colour adhesive tape and be set to inside electronic unit, since coloring is gluedIt adhesive tape 1 and seems that with electronic unit be in integrated, design becomes excellent.
In colouring adhesive film 3, in the Z-axis direction between adjacent layer, it can be in direct contact, it also can mediate contact.When contact, in the Z-axis direction between adjacent layer, the middle layer (not shown) for improving adherence etc. may be present.In addition,Each layer of color adhesive film 3 can be single layer, can also be made of multiple layers.
There is no particular limitation for the thickness of dyed layer 12, be 0.5 μm or more 10 μm hereinafter, preferably 0.8 μm or more 3 μm withUnder.If the thickness of dyed layer 12 is less than 0.5 μm, there are the adherences of resin film 11 and roughened layer 15 to reduce, roughened layer15 the case where being peeled off from resin film 11.In addition, if the thickness of dyed layer 12 is more than 10 μm, colours adhesive film 3 and thicken, is discontented withThe requirement being thinned enough.
There is no particular limitation for the thickness of roughened layer 15, is 0.5 μm or more 10 μm hereinafter, preferably 0.6 μm or more 3 μmHereinafter, more preferably 0.8 μm or more 2 μm or less.If the thickness of roughened layer 15 is less than 0.5 μm, it cannot get required structureFace colours adhesive film 3 and thickens if the thickness of roughened layer 15 is more than 10 μm, is unsatisfactory for the requirement of slimming.
By the way that the thickness of each layer is set as above-mentioned range, the thickness for peeling the coloring adhesive tape 1 after stripping film 30 off is10 μm or so, coloring adhesive tape 1 is constituted in a manner of very thin.
Further, viscous due to peeling the coloring after stripping film 30 off as shown in Fig. 2 (b) other than above-mentioned heat dissipation effectIt adhesive tape 1 and is provided with dyed layer 12, therefore graphite flake is apparent uneven becomes not eye-catching.Further, since coloring is adheredRoughened layer 15 is provided on adhesive tape 1, therefore its appearance becomes unglazed style.As a result, due to coloring adhesive tape 1 seem withElectronic unit is in integrated (seeming to combine together), and therefore, coloring adhesive tape 1 is not easy eye-catching, and design is also improved.
In addition, in adhesive film 2 or coloring adhesive film 3, in adhering agent layer 20, resin film 11 and roughened layer 15 at leastOne layer can include colorant.There is no particular limitation for colorant, but can for example enumerate, carbon black, titanium oxide, calcium carbonate,Barium sulfate, yellow ferric oxide, red ferric oxide, cyanine blue, aluminium powder, mica titanium valve etc..Graphite flake 100 is apparent uneven as a result,Become not eye-catching, 100 apparent aesthetics of graphite flake is further enhanced.That is, adhesive tape will be pasted with or coloured viscousThe design when graphite flake 100 of adhesive tape is set to inside electronic unit becomes more excellent.
The material of each layer is as described below in adhesive film 2.
[resin film]
The resin types of resin film are used in, there is no particular limitation, but can for example enumerate by poly terephthalic acid secondThe polyester that the polyester such as diol ester (PET), polybutylene terephthalate (PBT) (PBT), polyethylene naphthalate (PEN) are formedFilm；The cellulose membranes such as polyurethane film, polyethylene film, polypropylene screen, Triafol T；Polychloroethylene film, polyvinylidene chlorideFilm, polyvinyl alcohol film, ethylene-vinyl acetate copolymer film, polystyrene film, polycarbonate membrane, acrylic resin film, drop iceThe resin films such as piece vinyl resin film, cycloolefin resin film；The laminated body etc. of these two or more films.Resin film can also coverletAxis stretching or biaxial stretch-formed.Wherein, from precision, surface smoothness, the difficulty or ease of acquisition of the thickness being required with filmingDegree angularly sets out, preferably polyester film.As polyester film, particularly preferred PET film.In addition, from the angle of dimensional stability and intensityDegree sets out, and polyester film is preferably through biaxial stretch-formed film.Wherein preferably through biaxial stretch-formed P ET films.
[adhering agent layer]
As the sticker for the adhering agent layer for forming adhesive film 2, there is no particular limitation, such as can adhere from acrylic compoundsAgent, rubber sticker, silicone sticker, carbamates sticker, polyesters sticker, Styrene-diene blockSuitably selection uses in sticker well known to copolymer analog sticker etc..Sticker may be used alone or in combination using two kinds withOn.
It, can be it is preferable to use due to its bonding reliability height as sticker, especially acrylic compounds sticker.Acrylic compounds sticker, using acrylic polymer as adherence ingredient or host agent, on this basis needed for, including handing overJoin the additives appropriate such as agent, tackifier, softening agent, plasticizer, filler, age resister, colorant.Acrylic polymerFor the polymer using (methyl) alkyl acrylate as monomer main component, according to required, by using can be with (methyl)Monomer (co-polymerized monomer) that alkyl acrylate is copolymerized and prepare.As (methyl) alkyl acrylate, such as can arrangeEnumerate (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, (firstBase) amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) propyleneAcid -2- ethylhexyls, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) thirdOlefin(e) acid last of the ten Heavenly stems ester, (methyl) isodecyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate,(methyl) tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) thirdOlefin(e) acid cetyl ester, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, (methyl) acrylic acid 19(methyl) acrylic acid C1-20 Arrcostabs such as Arrcostab, (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 etc. as a purposeAnd it suitably selects.
As (methyl) alkyl acrylate, from Tg, the raising adhering agent layer for reducing obtained acrylic polymerThe angle of adhesion strength set out, (methyl) alkyl acrylate for the alkyl for being preferably 4~14 with carbon atom number.As with(methyl) alkyl acrylate for the alkyl that carbon atom number is 4~14, such as preferably (methyl) butyl acrylate, (methyl) thirdOlefin(e) acid isobutyl ester, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) amyl acrylate, (methyl) propyleneThe own ester of acid, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid-2-ethyl caproite, (methyl) acrylic acidDifferent monooctyl ester etc., particularly preferred (methyl) butyl acrylate.These monomers can use one kind, can also simultaneously use two kinds withOn.
In addition, it is the content of (methyl) alkyl acrylate of 4~14 alkyl to have carbon atom number, third is preferably constituted50 mass % or more in the monomer component of alkene acids polymers, more preferably 80 mass % or more, further preferably 90 matterMeasure % or more.By setting in the range content, the adhesion strength of above range can be readily derived.
In addition, as the co-polymerized monomer that can be copolymerized with (methyl) alkyl acrylate, such as can enumerateGo out 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；EthyleneThe monomers containing sulfonic group such as sodium sulfonate；The aromatic ethylene 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) hydroxyalkyl acrylates,The hydroxyls monomer such as glycerol dimethacrylate；(methyl) acrylate, (methyl) acryloyl morpholine etc. contain aminoMonomer；The monomers containing imide such as N-cyclohexylmaleimide, isopropylmaleimide；(methyl) glycidylEster, (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) propylene can be also enumeratedAcid esters, ethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylic acidEster, 1,6-hexylene glycols two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl)Co-polymerized monomer (the multifunctional list of the polyfunctionalities such as acrylate, dipentaerythritol six (methyl) acrylate, divinylbenzeneBody) etc..Co-polymerized monomer can be used alone or be applied in combination two or more.As co-polymerized monomer, it is preferable to use toolsThere is the modification monomer of the functional groups such as hydroxyl or carboxyl.
(methyl) alkyl acrylate copolymer, the modification with functional group for preferably comprising 0.1~20 mass % are singleBody, particularly preferably the modification monomer with functional group containing 1~10 mass %.
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 is to be scaled polyphenyl by what gel permeation chromatography (GPC) method measuredThe value of ethylene.
As crosslinking agent, if for functional group is reacted possessed by (methyl) alkyl acrylate copolymer friendshipJoin agent, such as isocyanates crosslinking agent, epoxies crosslinking agent, amine cross-linking agent, melamine class crosslinking can be enumeratedAgent, aziridines crosslinking agent, hydrazine crosslinking agent, aldehyde crosslinking agent, oxazoline classes crosslinking agent, metal alkoxide class crosslinking agent, metalChelates crosslinking agent, metallic salt crosslinking agent, ammonium salt class crosslinking agent etc., wherein it is preferred that excellent with the reactivity of hydroxyl and carboxylIsocyanates crosslinking agent.Crosslinking agent, which can be used alone, one kind or to be applied in combination two or more.
Isocyanates crosslinking agent includes at least polyisocyanate compounds.As polyisocyanate compounds, such as canEnumerate the aromatic series polyisocyanate such as toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, benzene dimethylene diisocyanateEster；The aliphatic polymeric isocyanates such as hexamethylene diisocyanate；Isophorone diisocyanate, two isocyanide of hydrogenated methylene diphenyldEster ring types polyisocyanate such as acid esters etc.；And biuret body, the isocyanuric acid ester body of these compounds further can also arrangeEnumerate as with the low molecules active hydrogen-contg compound such as ethylene glycol, propylene glycol, neopentyl glycol, trimethylolpropane, castor oilThe adduct etc. of reactant, wherein from the reactive angle of the reactive group with (methyl) acrylate polymersIt sets out, the aromatic poly-isocyanate that preferably trimethylolpropane is modified, particularly preferred trimethylolpropane is modified two methylene of benzeneGroup diisocyanate and trimethylolpropane modified toluene diisocyanate.
Relative to (methyl) alkyl acrylate copolymer of 100 mass parts, the blended amount of crosslinking agent is preferably 0.1~20Mass parts, particularly preferably 1~10 mass parts.It will be aftermentioned viscous if the blended amount of crosslinking agent in above-mentioned range, is easyThe gel fraction for 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 thisA little tackifying resins can improve adhesion strength, tensile strength or tensile break strength, therefore, by according to used acrylic acidAnalog copolymer suitably adds tackifying resin, can adjust adhesion strength, tensile strength or tensile break strength.As making an addition toThe pines such as the tackifying resin in the adhering agent layer of the adhesive film of the utility model, such as ester compounds that rosin or rosin can be enumeratedFragrant resinoid；The terpene resins such as diterpene polymer or australene-phenol copolymer；Aliphatic category (C5 classes) or aromatic (C9Class) etc. Petropols；In addition styrene resin, phenolic resin, xylene resin etc. can be enumerated.Wherein, from adhesion glueEven if band is slim and excellent adhesion strength angle and from adhesive tape to be set to the inside of electronic unit and is being addedWhen hot, adhesion strength is not easy to produce variation, the angle with heat resistance is set out, in the sticker for having used acrylic compounds stickerIn composition, at least one selected from rosin resinoid, Petropols, styrene resin is preferably comprised, is more preferably wrappedResinoid containing rosin, Petropols are particularly preferably used in mixed way rosin resinoid and Petropols.
Relative to (methyl) alkyl acrylate copolymer of 100 mass parts, the blended amount of tackifying resin is preferably 10~70 mass parts, more preferably 20~60 mass parts, particularly preferably 50~6 0 mass parts.If the blended amount of tackifying resin is upperIn the range of stating, even if excellent if then adhesive tape is slim adhesion strength, in addition, even if adhesive tape is set to electronicsThe inside of component and when being heated, adhesion strength is not easy to produce variation.
In addition, according to required, adhering agent layer can contain silane coupling agent, antistatic agent, antioxidant, ultraviolet radiation absorptionAgent, light stabilizer, softening agent, filler, adjustable refractive index agent, dyestuff, pigment, antirust agent etc..
[stripping film]
It is preferred that having peeling agent layer on the film base material of stripping film.In addition, the thickness of stripping film above-mentioned at this time refers to filmThe thickness of base material.
There is no particular limitation for the thickness of peeling agent layer, but preferably 0.01 μm or more 2 μm hereinafter, particularly preferably 0.03μm or more 1 μm or less.If the thickness of peeling agent layer is less than 0.01 μm, according to the material etc. for constituting peeling agent layer, existing cannotThe case where fully playing the function as peeling agent layer.On the other hand, it if the thickness of peeling agent layer is more than 2 μm, will shellWhen being taken as web-like from film roll, there is a situation where that generation adhesion, generation releasing situation are bad.
As film base material, can enumerate by polyethylene terephthalate, polybutylene terephthalate (PBT), poly- naphthalene twoThe polyester film of the polyester such as formic acid glycol ester formation, the polyolefin formed by polyolefin such as polyethylene, polypropylene, polymethylpentenesAny one in the plastic foils such as film, polycarbonate membrane, polyvinyl acetate film or the stacking that is made of these two or more filmsBody etc..
Peeling agent layer is for example formed by the solidfied material of the peeling agent layer formation composition comprising remover.As removerLayer formation composition, as long as peeling agent layer can be assigned to shell the arbitrary layer being laminated on peeling agent layer from stripping filmFrom function, there is no particular limitation.As remover, such as silicone remover, the stripping of chain alkyl class can be enumeratedFrom agent and alcohol acids remover etc..As the method that peeling force is set as prescribed limit, silicone remover is preferably used as strippingFrom agent, acrylic compounds sticker is used as to form the sticker of adhering agent layer.
As silicone remover, addition reaction-type silicone, condensation reaction type silicone, energy ray-curable silicon can be enumeratedKetone.In addition, in order to adjust peeling force, can also by the dimethyl silicone polymer of non-functional, phenyl modified silicone, silicone resin,Silica, cellulose compound are used as additive.
Other than adhesive film 2, the material for colouring each layer used in adhesive film 3 is as described below.
[dyed layer]
For dyed layer, as long as cooperation colours the color for the electronic unit that adhesive tape is attached or with reconciliationColor is coloured, then there is no particular limitation, but never make apparent uneven eye-catching, the imparting design of graphite flake etc.Angle is set out, preferably black.
Dyed layer preferably comprises coloured material and binder resin.As binder resin, such as amino first can be enumeratedAcid ester resin, epoxy resin, polyester resin, polyester urethane resin etc..These binder resins can be used alone,It can use simultaneously two or more.Wherein, from the excellent angle of flexibility, binder resin be more preferably polyester resin,At least one of polyester urethane resin, more preferably polyester urethane resin.The glass of above-mentioned binder resinGlass transition temperature (Tg) is preferably -30~10 DEG C.
Dyed layer is preferably cured by curing agent.There is no particular limitation for curing agent, can coordinate binder resinAnd it suitably selects.When binder resin is polyester urethane resin, as curing agent, such as isocyanates can be enumerated and consolidatedAgent etc..In addition, solid there are amine hardener when hydroxyl or isocyanate group, can be used to be used as in polyester urethane resinAgent.These curing agent can be used alone, and can also use simultaneously two or more.
As coloured material, known usual pigments or dyes can be used.When dyed layer is black, such as carbon can be enumeratedIt is black；For white when, titanium oxide, calcium carbonate, barium sulfate can be enumerated；For yellow when, yellow ferric oxide can be enumerated；For red when,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, canEnumerate mica titanium valve etc..Wherein, since the concealment of carbon black is excellent, preferably.The content of coloured material in dyed layerThere is no particular limitation, can be appropriately configured according to concealment as a purpose etc..Such as dyed layer preferably comprises bondingAgent resin and relative to 100 mass parts binder resin be 10 mass parts more than 70 coloured materials below mass part.IfThe content of coloured material is more than 70 mass parts, then there is a possibility that reduce with the adherence of roughened layer, therefore not preferably.OnIt states coloured material and commercial goods can also be used, the commercial goods of the coloured material as black, such as UTCO-591 can be enumeratedBLACK (Dainichiseika Color＆Chemicals Mfg. Co., Ltd. manufacture) etc..
According to required, dyed layer can also further contain transparent resin (medium), antioxidant, ultra-violet absorber, lightThe additives such as stabilizer.
[roughened layer]
About roughened layer, if the average height Rc of arithmetic average roughness Ra, roughness curve element and 10 points it is flatEqual roughness Rzjis is required range, then to its material, there is no particular limitation.Roughened layer can be by carrying out corona dischargeCoarse roller surface is crimped on the surface of roughened layer to transfer the roughness of roller surface by the method for processing, blasting treatmentMethod etc., to adjust Ra, Rc and Rzjis of roughened layer.
Roughened layer preferably comprises particle and binder resin, more preferably comprising in inorganic particle and organic granular at leastAny one, further preferably includes inorganic particle and binder resin.By adjusting the flat of inorganic particle and/or organic granularEqual grain size, blended amount etc., can also easily adjust above-mentioned roughness etc..The average grain diameter of inorganic particle and/or organic granularThe thickness of roughened layer can be more than.In roughened layer 15, inorganic particle can be exposed, binder resin can also be exposed.The average grain diameter of inorganic particle is 10 μm of 50nm or more or less.
There is no particular limitation for average grain diameter, can be measured by coulter counter method.For example, will be counted by KurtThe peak value that method measures is as average grain diameter.
As binder resin, there is no particular limitation, can enumerate thermoplastic resin, thermosetting resin, light-cured resinDeng, such as carbamate resins, epoxy resin, polyester resin, polyester urethane resin can be enumerated etc..These are bondedAgent resin can be used alone, and also can be used simultaneously two or more.Wherein, since flexibility is excellent, preferred thermoplastic resin is excellentSelect carbamate resins, polyester resin, polyester urethane resin.When roughened layer includes particle, from the angle of compatibilityDegree sets out, and binder resin is more preferably at least one of polyester resin, polyester urethane resin.
Roughened layer can be cured by curing agent.There is no particular limitation for curing agent, binder resin can be coordinated andSuitably selected.When binder resin is polyester urethane resin, as curing agent, such as isocyanates can be enumeratedCuring agent etc..In addition, can amine hardener be used as solidification there are when hydroxyl or isocyanate group in polyester urethane resinAgent.These curing agent can be used alone, and can also use simultaneously two or more.In addition, according to required, can contain in roughened layerThere are the additives such as the antioxidant being again included in dyed layer, ultra-violet absorber, light stabilizer.
[manufacturing method of adhesive film]
Hereinafter, being illustrated to the manufacturing process of the adhesive film of present embodiment, but not limited to this.Fig. 3 is to thisThe schematic diagram that the manufacturing process of the adhesive film of embodiment illustrates.In the present embodiment, it is manufactured by roll-to-roll modeAdhesive film 2.Such as adhesive film 2 is manufactured in an atmosphere.Arrow DR in figure indicates the traffic direction of film.Traffic direction DR corresponds toLong side direction DL.
Stripping film 30 by roll out roller 211 from then by continuously release from rolling out roller 211, drawn via deflector roll 250aIt is directed at coating mechanism 220.Peeling agent layer is formed on the surface (surface for forming adhering agent layer 20) of stripping film 30.
By coating mechanism 220, in the coating fluid for being coated with adhering agent layer 20 from the stripping film 30 for rolling out the releasing of roller 211.Stripping film 30 with adhering agent layer 20 is directed to hothouse 230 via deflector roll 250b, at an established temperature, for example (,) it is dryMore than 10 seconds kinds 5 minutes or less.Being formed as a result, has stripping film 30 and adhering agent layer 20, stripping with adhering agent layer 20Film 30.Stripping film 30 with adhering agent layer 20 is directed to via deflector roll 250c attaches mechanism 240.
By attach mechanism 240, resin film 11 be attached at be directed to attach mechanism 240, have adhering agent layer 20Stripping film 30 adhering agent layer 20 side on.For example, with adhering agent layer 20 stripping film 30 be clamped in roller 240b withBetween roller 240c, resin film 11 rolling out roller 240a between roller 240b and roller 240c by releasing.
Resin film 11 is attached on adhering agent layer 20 as a result, and being formed has stripping film 30, adhering agent layer 20 and resin film11 adhesive film 2.Then, adhesive film 2 is via deflector roll 250d, by work beam 210 from then be taken up roller 210 and continuously roll upIt takes.
In addition, for the coating method of coating mechanism 220, such as scraper rubbing method, scraper for coating method can be suitably used(knife coat method), roller coating method, scraping blade rubbing method (blade c oat method), die coating methods (dieCoating method), any one method in gravure coating method etc..
When adhesive film 2 further has dyed layer 12 and/or roughened layer 15, after manufacturing adhesive film 2, by dyed layer12 and/or roughened layer 15 be laminated on resin film 11.Or chromatograph 12 and/or roughened is stacked on 11 upper layer of resin film in advanceThen layer attaches stripping film 30 to manufacture coloring adhesive film 3.
Stacked the method for chromatograph 12 and/or roughened layer 15 on 11 upper layer of resin film, there is no particular limitation.Dyed layer 12And/or the coating fluid of roughened layer 15 is when being ink, preferably by printing the method being laminated.As mode of printing, may be used alsoLetterpress, aniline printing, dry type hectographic printing (dry offset printing), intaglio printing is suitably used(gravure printing), intaglio plate hectographic printing (gravure offset printing), hectographic printing, silk-screen printing etc.Any one gimmick in known ways customary etc..Wherein, intaglio printing mode is preferred embodiment, by resin film 11It repeats print 2~4 times and is laminated, to reduce pin hole.
Embodiment
Hereinafter, the utility model is further specifically described by embodiment etc., but the scope of the utility modelIt is not limited by these embodiments etc..The effect of the adhesive film of present embodiment is indicated in table 1.
[table 1]
[embodiment 1]
The preparation ＞ of ＜ adherence composition solutions
By by the acrylic acid -2- hydroxyls of the butyl acrylate of 95.5 mass parts, the vinylacetate of 3 mass parts, 1 mass partsThe acrylic acid copolymer of base ethyl ester and 0.5 mass parts prepares the acrylate copolymer that weight average molecular weight is 10 00000.Then,By (being scaled solid constituent relative to 100 mass parts；It is same as below) the acrylate copolymer, 25 mass parts of additionHydrogenated wood rosin glycerol ester (Ar akawa Chemical Industries, Ltd. manufactures, PINECRYSTAL 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 the petroleum resinoid of 24 mass parts (Mitsui Che micals, Inc. manufacture, FTR6100 are softChange point：95 DEG C), and mixed, adhesion ingredient is consequently formed.Adhesion ingredient is dissolved in toluene, prepares solid component concentrationFor the adhesion agent solution of 13 mass %.
The preparation ＞ of ＜ dyed layer coating fluids
As dyed layer coating fluid, used as carbamates, solid component concentration be 59 mass %'sThe UTCO- 591Black (NX) of Dainichiseika Color＆Chemicals Mfg.Co., Ltd. manufactures, utilize acetic acid secondEster is diluted it.The solid component concentration of dyed layer coating fluid is adjusted to 10 mass %, viscosity-adjusting agent is15mPa·s。
The preparation ＞ of ＜ roughened layer coating solution
Roughened layer coating solution is prepared by following manner, i.e.,：Relative to 100 mass parts (be scaled solid atPoint) polyester resin (TOYOBO CO., the LT D. manufacture as binder resin：Vylon 20SS), 22 mass parts of additionSilicon dioxide microparticle (Tosoh Silica C orporation manufactures, NIPSIL SS50B, 2.1 μm of average grain diameter), 100 matterMeasure barium sulfate particles (Sakai Chemical Industry Co., the Ltd. manufactures of part：BMH, 2.5 μm of average grain diameter), it usesToluene/methyl ethyl ketone (MEK) mixed solvent (toluene：MEK (mass ratio)=50：50) solid component concentration is adjusted to 20 matterMeasure %.
The manufacture ＞ of ＜ adhesive films
Relative to the solid constituent in the adhesion agent solution of 100 mass parts, 1 mass parts (being scaled solid constituent) are addedAs crosslinking agent trimethylolpropane modified toluene diisocyanate (Nip pon Polyurethane Industry Co.,Ltd. manufacture, CORONATE L), obtain adherence composition solution (solid component concentration is 13 mass %).
Silicone remover will be used to have carried out the stripping of lift-off processing to the single side of polyethylene terephthalate film(SP-PET251130 of LINTEC Corporation manufactures, the Ra of the lower surface 30d of stripping film is 34nm to film, and Rc isThe Young's modulus of 400nm, Rzjis 672nm, stripping film are 4200MPa, and thickness is 2.5 × 10-5M, the Young's modulus of stripping filmProduct with thickness is 0.105MPam) it releases, in such a way that the thickness after drying becomes 2 μm, existed using knife type coaterAfter being coated with adherence composition solution on its lift-off processing face, obtained film is carried out at 90 DEG C at heating in 1 minuteReason forms the adhering agent layer that thickness is 2 μm on stripping film.Then, it is bonded as tree in the exposed surface side of above-mentioned coating layerAdipose membrane polyethylene terephthalate film (Toray Industries, Inc., ET2F51L, 2 μm of thickness, Young's modulus4200MPa), obtained adhesive film is coiled into web-like.
Then, it is cured 7 days, is manufactured by removing under conditions of 23 DEG C, 50%RH by the way that the adhesive film of web-like will be coiled intoFilm (thickness：25 μm)/adhering agent layer (thickness：2 μm)/resin film (thickness：2 μm) constitute adhesive film.
Then, the adhesive film for being rolled into web-like is released, is coated with dyed layer painting on surface resin film by gravure coaterCloth liquid, is further heated, and the dyed layer that thickness is 1 μm is formed on adhesive film.Further, with the thickness after dryingDegree will be acquired after being coated with roughened layer coating solution in coloring layer surface using gravure coater as 1 μm of modeFilm heat treatment in 1 minute is carried out at 90 DEG C, form the roughened layer that thickness is 1 μm.It then, will be (thick by stripping filmDegree：25 μm)/adhering agent layer (thickness：2 μm)/resin film (thickness：2 μm)/dyed layer (thickness：1 μm)/roughened layer (thickness：1μm) constitute the adhesive film with dyed layer batch as web-like.
The measurement ＞ of ＜ Young's modulus
200mm/ minutes are selected as test speed, the poplar of stripping film or resin film is measured according to JIS K-7127 (1999)Family name's modulus.
The measurement ＞ of ＜ thickness
Each layer is measured using film thickness gauge (the film thickness gauge Digimicro MH-15M of Nikon Corporation manufactures)Thickness.
The measurement ＞ of the peeling force relative to adhering agent layer of ＜ stripping films
It is the size that width is 50mm, length is 150mm by adhesive film severing, sample is made, in 23 DEG C, the item of 50%RHIt placed under part 1 hour.The sample and the surface of stripping film opposite side are fixed on alkali-free glass using double faced adhesive tapeOn (Corning Incorporated manufactures, EAGLE XG), cupping machine (ORIENTEC CORPORATION systems are usedMake, TENSI LON), under conditions of peeling rate is 300mm/min, peel angle is 180 °, measure stripping when film is peeled offIntensity.For the condition in addition to the condition for being recorded in this, according to JIS Z023 7:2009 are determined.Then, underIt states calculating formula to be converted by above-mentioned peel strength, so as to find out peeling force (mN/25mm), (W is the width (mm) of test film：50)。
Peeling force (mN/25mm)=peel strength (mN/50mm) × 25 ÷ W (calculating formula)
The measurement ＞ of the adhesion strength relative to stainless steel plate of ＜ adhesive tapes
Severing adhesive film makes the sample of 25mm wide, 250mm long.Stripping film is peeled off from the sample, uses the rubber of 2kgThe sample for exposing adhering agent layer is attached on stainless steel plate (S US304) by rubber roller.Then, in 23 DEG C, the condition of 50%RHAfter lower placement 24 hours, using cupping machine (ORIENTEC CORPORATION are manufactured, TENSILON), according to JIS Z0237：2009, measure the adhesion strength (N/25mm) under conditions of peeling rate is 300mm/min, peel angle is 180 °.
＜ surface roughness measurements ＞
It uses contact surface roughometer (Mitutoyo Corporation are manufactured, trade name " S V3000S4 ")The average height Rc of the roughness curve element of the lower surface 30d of stripping film is measured according to JIS B 0601-2001.
The stripping suitability ＞ of ＜ stripping films
A：There is no problem, and stripping film is removed on ground from adhering agent layer.
C：Stripping film is difficult to remove from adhering agent layer.
The attaching suitability ＞ of ＜ adhesive tapes
In adhesive film, the starting point part of stripping is made between stripping film and adhering agent layer, by stripping film from stickerIt is removed on layer, under conditions of environment temperature is 23 DEG C, humidity is 50%, carries out one on graphite flake using the roller of 2kg and comePressurization is returned to be attached.By visual observations, evaluated by benchmark below.
A：After peeling stripping film off, fold and relaxation are not generated on adhesive tape, also bubble-free after attaching, is good.
C：When removing stripping film, fold and relaxation are generated on adhesive tape.And/or on the adhesive tape after attachingProduce fold and relaxation.
The processing suitability ＞ of ＜ adhesive films
In the manufacturing process of adhesive film, evaluated by benchmark below.
A：It can be processed without problems.
C：In the process of a part, fold and/or relaxation etc. are generated when carrying, and problem is produced in processing.
In embodiment 1, it is " A " to remove suitability, attach suitability and process suitability.
[embodiment 2]
In addition to stripping film is changed to using silicone remover be 3.8 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 381130 of LINTEC Corpora tion manufactures, the stripping of lift-off processingThe Ra of lower surface 30d from film is 34nm, Rc 320nm, Rzjis 672nm, the Young's modulus of stripping film be 4200MPa,Thickness is 3.8 × 10-5M, the Young's modulus of stripping film and the product of thickness be 0.160MPam) other than, with 1 phase of embodimentSame mode has made the adhesive film with dyed layer.
In example 2, it is " A " to remove suitability, attach suitability and process suitability.
[embodiment 3]
Other than being not provided with roughened layer, in the same manner as example 1, the adhesion with dyed layer has been madeFilm.
In embodiment 3, it is " A " to remove suitability, attach suitability and process suitability.
[embodiment 4]
In addition to stripping film is changed to using silicone remover be 2.5 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 251031 of LINTEC Corporatio n manufactures, stripping at strippingThe Ra of the lower surface 30d of film is that 34nm, Rc are 40 0nm, Rzjis 672nm, and the Young's modulus of stripping film is 4200MPa, thicknessDegree is 2.5 × 10-5M, the Young's modulus of stripping film and the product of thickness are 0.105MPam) other than, with same as Example 1Mode, made the adhesive film with dyed layer.
In example 4, it is " A " to remove suitability, attach suitability and process suitability.
[embodiment 5]
In addition to stripping film is changed to using silicone remover be 2.5 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 252120 of LINTEC Corporation manufactures, the stripping of lift-off processingThe Ra of the lower surface 30d of film is 34nm, Rc 400nm, Rzjis 672nm, and the Young's modulus of stripping film is 4200MPa, thicknessDegree is 2.5 × 10-5M, the Young's modulus of stripping film and the product of thickness are 0.105MPam) other than, with same as Example 1Mode, made the adhesive film with dyed layer.
In embodiment 5, stripping suitability, attaching suitability and processing suitability are " A ".
As described in the foregoing description, the evaluation of " C " is not equivalent in Examples 1 to 5.
[comparative example 1]
In addition to stripping film is changed to using silicone remover be 7.5 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 751130 of LINTEC Corpora tion manufactures, the stripping of lift-off processingThe Rc of lower surface 30d from film is 290nm, and the Young's modulus of stripping film is 4200MPa, thickness is 7.5 × 10-5M, stripping filmYoung's modulus and the product of thickness are 0.315MPam) other than, in the same manner as example 1, makes and had dyed layerAdhesive film.
In comparative example 1, though stripping suitability and processing suitability are " A ", due to Young's modulus and the thickness of stripping filmThe product of degree is excessively high, therefore when removing stripping film, and fold and relaxation are generated on adhesive tape, and it is " C " to attach suitability.
[comparative example 2]
In addition to stripping film is changed to using silicone remover be 7.5 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 752150 of LINTEC Corpora tion manufactures, the stripping of lift-off processingThe Rc of lower surface 30d from film is 290nm, and the Young's modulus of stripping film is 4200MPa, thickness is 7.5 × 10-5M, stripping filmYoung's modulus and the product of thickness are 0.315MPam) other than, in the same manner as example 1, makes and had dyed layerAdhesive film.
In comparative example 2, though processing suitability is " A ", since peeling force is excessively high, stripping film is difficult to be stripped,It is " C " to remove suitability.Further, since the product of the Young's modulus of stripping film and thickness is excessively high, in stripping stripping filmWhen, fold and relaxation are generated on adhesive tape, it is " C " to attach suitability.
[comparative example 3]
In addition to stripping film is changed to using silicone remover be 3.8 × 10 to thickness-5The poly terephthalic acid second two of mThe single side of alcohol ester film has carried out stripping film (SP-PET 382150 of LINTEC Corpora tion manufactures, the stripping of lift-off processingThe Rc of lower surface 30d from film is 320nm, and the Young's modulus of stripping film is 4200MPa, thickness is 3.8 × 10-5M, stripping filmYoung's modulus and the product of thickness are 0.160MPam) other than, in the same manner as example 1, makes and had dyed layerAdhesive film.
In comparative example 3, though processing suitability is " A ", since peeling force is excessively high, stripping film is difficult to be stripped,It is " C " to remove suitability.
More than, the embodiment of the utility model is illustrated, but the utility model can be subject to various changes completelyMore, it is not limited in above-mentioned embodiment.