CN104449443A - Adhesive sheet - Google Patents
Adhesive sheet Download PDFInfo
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- CN104449443A CN104449443A CN201410479770.9A CN201410479770A CN104449443A CN 104449443 A CN104449443 A CN 104449443A CN 201410479770 A CN201410479770 A CN 201410479770A CN 104449443 A CN104449443 A CN 104449443A
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- Prior art keywords
- methyl
- acrylate
- adhesive sheet
- ester
- layer
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
Abstract
The invention relates to an adhesive sheet. The invention provides an adhesive sheet which does not reduce adhesive force even though in a condition of arranging a bottom coating layer, and shading of the sheet is better. The adhesive sheet (10) is provided with a substrate (5) and an adhesive layer (3). The substrate (5) is a stacked obtained by stacking a plastic base material (4), a bottom coating layer (2), and a coloring layer (1) in sequence. The bottom coating layer (2) contains a coloring agent. The content of the coloring agent in the bottom coating layer (2) is preferably to be 0.01 to 60 wt%. In addition, the coloring layer (1) and the coloring agent are preferably to be black.
Description
Technical field
The present invention relates to adhesive sheet.
Background technology
In the past, in the liquid crystal indicator of mobile phone, contact panel etc., between the liquid crystal display mode module unit relevant to display screen and back light unit, use the adhesive sheet with light shield layer.Above-mentioned light shield layer plays and prevents backlight from draining to LCD MODULE side, improving visual effect.
As the adhesive sheet with such light shield layer, the known laminated substrate being provided with black printed layer on plastic basis material is provided with the formation (for example, see patent documentation 1) of binder layer.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2009-197124 publication
Summary of the invention
Invent problem to be solved
In the laminated substrate used in above-mentioned adhesive sheet, generally for the tackiness of raising printed layers and plastic basis material and undercoat is set between printed layers and plastic basis material.But it is rough for undercoat, and the thickness of the printed layers be therefore laminated thereon may produce deviation.Therefore, according to use-pattern, sometimes from the part light leak that printed layers is thin.
Therefore, do not make adhesion characteristic deterioration even if the object of the present invention is to provide when being provided with undercoat yet, and the adhesive sheet that opacifying property is more excellent.
For the means of dealing with problems
Adhesive sheet of the present invention, in order to solve the problem, is characterized in that, possesses base material and binder layer, and described base material is that described undercoat contains tinting material by plastic basis material, undercoat and pigmented layer according to the stacked laminated substrate obtained of this order.
In adhesive sheet disclosed herein, in described undercoat, the content of tinting material is preferably 0.01 ~ 60 % by weight.
In addition, in adhesive sheet disclosed herein, described pigmented layer is preferably black.
In addition, in adhesive sheet disclosed herein, described tinting material is preferably black.
In addition, in adhesive sheet disclosed herein, the binder layer that described binder layer is preferably formed by acrylic adhesives.
Invention effect
According to the present invention, do not make adhesion characteristic deterioration even if can provide when being provided with undercoat yet, and the adhesive sheet that opacifying property is more excellent.
Accompanying drawing explanation
Fig. 1 is the sectional view of the schematic configuration of the adhesive sheet schematically showing present embodiment.
Reference numeral
1 pigmented layer
2 undercoats
3 binder layers
4 plastic basis materials
5 base materials
10 adhesive sheets
Embodiment
Below, the present invention is specifically described.
Adhesive sheet of the present invention possesses base material and binder layer.
In addition, in this specification sheets, represent that " A ~ B " of scope refers to more than A and below B.The various physical property enumerated in this specification sheets, if not otherwise specified, refer to the value that the method by recording in embodiment described later measures.In addition, in this specification sheets, " (methyl) vinylformic acid " in " (methyl) vinylformic acid " etc. refers to " vinylformic acid and/or methacrylic acid ".In addition, in this specification sheets, also comprise banded formation in " adhesive sheet ", i.e. " self adhesive tape ".
In addition, " main component " in this specification sheets to refer in this composition with weight basis containing the highest proportional composition, is generally more than 50 % by weight.
(I) base material
The laminated substrate of above-mentioned base material for plastic basis material (plastic base sheet material layers), undercoat and pigmented layer are obtained according to this order is stacked.The total thickness of base material such as can be set as 0.1 ~ 100 μm, is preferably 1 ~ 50 μm, is more preferably 5 ~ 20 μm.
(plastic basis material)
Above-mentioned plastic basis material is not particularly limited.As material or the starting material of plastic basis material, can enumerate such as: polyester (polyethylene terephthalate (PET), PEN, polybutylene terephthalate, PBN etc.), polyolefine (polyethylene, polypropylene, ethylene-propylene copolymer etc.), polyvinyl alcohol, polyvinylidene dichloride, polyvinyl chloride, vinyl chloride vinyl acetate copolymer, polyvinyl acetate, polymeric amide, polyimide, cellulose family, fluorine resin, polyethers, polystyrene resins (polystyrene etc.), polycarbonate, polyethersulfone etc.Wherein, consider from the viewpoint such as cost, intensity, preferred polyester, particularly preferably polyethylene terephthalate.These materials may be used singly or two or more in combination, and in addition, can have any one form of individual layer, multilayer.
In above-mentioned base material, can as required containing known additives etc. such as such as weighting agent, fire retardant, antiaging agent, antistatic agent, tenderizer, UV light absorber, antioxidant, softening agent, tensio-active agents.
The thickness (when plastic base sheet material layers is multilayer its total thickness) of plastic basis material is such as 1 μm ~ 50 μm, is preferably 1 μm ~ 30 μm, is more preferably 2 μm ~ 20 μm.
The formation method of base material is not particularly limited, and can enumerate such as: use and form the resin combination of plastic basis material, utilizes the forming methods such as extrusion moulding, inflation are shaping, calendering formation to be shaped to the method etc. of sheet.From the viewpoint of intensity, preferably carry out stretch orientation.
(undercoat)
Above-mentioned undercoat contains tinting material.As undercoat, existing known formation can be enumerated, be not particularly limited, can enumerate such as: urethane (polymeric polyisocyanate) resinoid, polyester resin, acrylic resin, polyamide-based resin, trimeric cyanamide resinoid, olefine kind resin, polystyrene resins, epoxy resin, resol, isocyanuric acid esters resin, polyvinyl acetate esters resin etc.Wherein, from the viewpoint of improving the tackiness of plastic basis material (such as PET base material) with printed layers, preferably good with both consistencies polyurethane based resin, acrylic resin.As the formation material of these undercoats, can preferably use second-order transition temperature to be more than 20 DEG C, be the material of 20 DEG C ~ 120 DEG C further.
In addition, the resin used in above-mentioned undercoat for having crosslinking curing, polymerization, condensation isoreactivity, can show the resin of above-mentioned physical property by making it react.Suitably linking agent can be added in crosslinking curing etc.In addition, in undercoat, the functional additives such as antistatic agent can also be added to give other function.
As the preference of the formation material of above-mentioned undercoat, acrylic resin can be enumerated.As this acrylic resin, can use such as: using methyl methacrylate as main component, by (methyl) alkyl acrylate beyond methyl methacrylate or copolymerisable monomer and methyl methacrylate copolymer and the multipolymer obtained.
As the alkyl ester of above-mentioned (methyl) alkyl acrylate, can enumerate such as: methyl esters, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, secondary butyl ester, the tert-butyl ester, pentyl ester, isopentyl ester, own ester, heptyl ester, monooctyl ester, 2-ethylhexyl, different monooctyl ester, the ninth of the ten Heavenly Stems ester, the last of the ten Heavenly stems ester, isodecyl ester, undecyl ester, dodecyl ester, tridecyl ester, tetradecyl ester, cetyl ester, stearyl, the alkyl such as eicosyl ester carbonatoms be 1 ~ 30, the straight or branched alkyl ester etc. of particularly carbonatoms 4 ~ 18.
As above-mentioned copolymerisable monomer, can enumerate such as: the carboxyl group-containing monomers such as (methyl) vinylformic acid, carboxyethyl acrylates, vinylformic acid carboxyl pentyl ester, methylene-succinic acid, toxilic acid, fumaric acid, β-crotonic acid; The anhydride monomers such as maleic anhydride, itaconic anhydride; (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, (methyl) vinylformic acid 4-hydroxybutyl, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 8-hydroxyl monooctyl ester, (methyl) vinylformic acid 10-hydroxyl ester in the last of the ten Heavenly stems, (methyl) vinylformic acid 12-hydroxylauric ester, hydroxyl monomer such as vinylformic acid [4-(methylol) cyclohexyl] methyl esters, N-methylol (methyl) acrylamide etc.; Styrene sulfonic acid, allyl sulphonic acid, 2-(methyl) acrylamide-2-methylpro panesulfonic acid, (methyl) acryamidopropanesulfonic acid, (methyl) sulfopropyl acrylate, (methyl) propane sulfonic acid etc. are containing sulfonic group monomer; The phosphorous acid-based monomers such as acryloyl phosphoric acid 2-hydroxy methacrylate; The emulsion stability such as dimethylaminoethyl methacrylate, t-butylaminoethyl methacrylate; (methyl) glycidyl acrylates etc. are containing epoxy based monomers; And (methyl) acrylamide, vinyl-acetic ester, vinylbenzene, vinyl cyanide etc.Less than 50 % by weight of whole monomer component is preferably with above-mentioned (methyl) alkyl acrylate of above-mentioned methyl methacrylate copolymer or the usage quantity of copolymerisable monomer.
In addition, when acrylic resin as the formation material of undercoat uses carboxyl group-containing monomer, anhydride monomers as above-mentioned copolymerisable monomer, also can use the material utilizing the epoxy compounds modifications such as butyl glycidyl base ether, phenylglycidyl ether, nonyl phenyl glycidyl glyceryl ether or the material utilizing the primary amine such as MMA, dimethylamine, mono aminoethane, diethylamine or secondary amine to carry out amidation and obtain.In addition, ethyleneimine etc. also can be made to carry out grafting and obtain the grafting compound of poly-ethyleneimine.
Undercoat can by crimp on above-mentioned plastic basis material forms the melts of material by the method forming the film that material is formed of above-mentioned illustrative undercoat, coating and the method for cooling or coating forms material solution also drying method and formed.Coating process can suitably be selected, and in order to thickness and precision being adjusted to 0.5 μm ~ 10 μm, preferably can use intaglio plate coating, reverse roll coating, spraying etc.
As tinting material, existing known pigment or dyestuff can be used.As pigment, can enumerate: the purple cyclic ketones class of the mineral dye such as zinc carbonate, zinc oxide, zinc sulphide, talcum, kaolin, calcium carbonate, titanium oxide, silicon-dioxide, lithium fluoride, Calcium Fluoride (Fluorspan), barium sulfate, aluminum oxide, zirconium white, iron oxides, ironic hydroxide class, chromic oxide class, spinel type roasting class, chromic acid class, chrome vermilion class, prussian blue, aluminium powder class, bronze powder class, calcium phosphate, phthalocyanines, azo, condensation azo, azo lake class, anthracene class, perylene, indigo thioindigo class, isoindoline ketone, azomethine class, two
the pigment dyestuffs such as piperazine class, acridine ketone, nigrosine class, triphenylmethane, carbon black class.
As dyestuff, can enumerate such as: azoic dyestuff, anthraquinone, quinophthalone, styryl dye, ditan, triphenyl methane,
piperazine, triazine, xanthene, methane dye, azomethine, acridine, diazine.
The content of the tinting material in undercoat is not particularly limited, such as, can be set as 0.01 ~ 60 % by weight, is preferably 1 ~ 50 % by weight, is more preferably 10 ~ 40 % by weight.
(pigmented layer)
As above-mentioned pigmented layer, can enumerate such as: the layer of the shades of colour such as display black, grey, white, redness, blueness, yellow, green, yellow-green colour, orange, purple, gold, silver color, from the viewpoint of opacifying property, preferred black.
Above-mentioned pigmented layer can be formed by ink composite.Above-mentioned ink composite passes through to present the colorant (tinting material) of the shades of colours such as black as neccessary composition, and forms containing binding agent, dispersion agent, solvent etc. as required.Can by above-mentioned ink composite be applied on supporter, and carry out drying as required, be solidified to form pigmented layer.
As above-mentioned colorant, can be any one colorant (tinting material) of pigment, dyestuff etc., preferably can use pigment.Particularly, such as, as black system colorant, can enumerate: carbon black (furnace black, thermally oxidized black, acetylene black, thermals, dim, pine soot etc.), graphite (blacklead), cupric oxide, Manganse Dioxide, nigrosine, perylene is black, titanium is black, cyanine is black, gac, ferrite (non magnetic ferrite, magnetic ferrite etc.), magnetite, chromic oxide, ferric oxide, molybdenumdisulphide, chromium complex, composite oxides class black pigment, the organic black pigment of Anthraquinones etc.Wherein, consider from the viewpoint such as cost, availability, preferred carbon black.Black system colorant may be used singly or two or more in combination.
As the above-mentioned colorant presenting black, except black system colorant, also can use and be selected from black system colorant, cyan system colorant (bluish-green colour system colorant), fuchsin colour system colorant (purple colour system colorant) and yellow is the coloring material for mixing thing that the multiple colorant of colorant (yellow is colorant) mixes.
For the pigmented layer of other color beyond black, can similarly be formed.
As the formation method of above-mentioned pigmented layer, known usual coating method can be enumerated, the utilize various print process method etc. of (woodburytype, flexographic printing process, flexographic printing process, toppan printing, silk screen print method etc.).
In above-mentioned ink composite, the total content of colorant is preferably 20 ~ 60 % by weight relative to the solids component (nonvolatile component such as colorant and binding agent) of ink composite, is more preferably 30 ~ 50 % by weight.The content of colorant lower than 20 % by weight time, the opacifying property of corresponding thickness is low sometimes, is difficult to pigmented layer (such as opacifying property printed layers) filming.In addition, when content is more than 60 % by weight, the stationarity of colorant declines sometimes.
Pigmented layer can have any one form of individual layer, multilayer, preferably has the form of multilayer.Therefore, adhesive sheet disclosed herein (such as double-faced adhesive tape) preferably has the opacifying property printed layers of multilayered structure as pigmented layer.Visible, by opacifying property printed layers is set as multilayered structure, further can improve opacifying property, and the effect of pin hole can be reduced.In addition, the number of plies of pigmented layer (such as opacifying property printed layers) can be different from the degree of the thickness of every one deck or opacifying property, so there is no special restriction, it is such as about 1 layer ~ about 5 layers, be preferably 2 layers ~ 5 layers, more preferably 3 layers ~ 5 layers (particularly 3 layers or 5 layers).
The total thickness of the above-mentioned pigmented layer thickness of pigmented layer entirety (when the multilayered structure) is not particularly limited, and from the viewpoint of taking into account opacifying property and filming, being preferably 1 ~ 7 μm, being more preferably 1 ~ 6 μm, more preferably 1 ~ 5 μm.
(II) binder layer
As the tackiness agent for the formation of above-mentioned binder layer, be not particularly limited, can enumerate such as: the known tackiness agent such as polyurethane binding, acrylic adhesives, rubber adhesive, polysiloxane-based tackiness agent, polyester adhesive, polyamide-based tackiness agent, epoxy adhesive, vinyl alkyl ethers tackiness agent, fluorine-containing type tackiness agent.Tackiness agent may be used singly or two or more in combination.In addition, tackiness agent can have any form.Tackiness agent can be such as: Emulsion Adhesive, Solvent Adhesive, hot-melt type tackiness agent (Hotmelt Adhesive).
As tackiness agent, can preferably use acrylic adhesives, rubber adhesive.Polymkeric substance based on acrylic adhesives contains (typically containing as main component) acrylic polymers.As acrylic polymers, be not particularly limited, preferably use (methyl) alkyl acrylate (alkyl acrylate, alkyl methacrylate) with straight or branched alkyl as main composition monomer component (monomer main component).Particularly, as (methyl) alkyl acrylate, can enumerate such as: (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) amyl acrylate, (methyl) isoamyl acrylate, (methyl) vinylformic acid peopentyl ester, (methyl) Ethyl acrylate, (methyl) heptylacrylate, (methyl) 2-EHA, (methyl) Octyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) vinylformic acid ester in the ninth of the ten Heavenly Stems, (methyl) vinylformic acid ester in the different ninth of the ten Heavenly Stems, (methyl) decyl acrylate, (methyl) isodecyl acrylate, (methyl) vinylformic acid undecyl ester, (methyl) dodecylacrylate etc.(methyl) alkyl acrylate may be used singly or two or more in combination.
As the monomer component forming acrylic polymers, as long as using (methyl) alkyl acrylate as monomer main component, can use can with other monomer component of (methyl) alkyl acrylate copolymer (being sometimes referred to as " copolymerisable monomer composition ").In addition, (methyl) alkyl acrylate is preferably with the ratio use relative to the monomer component total amount being formed acrylic polymers being more than 50 % by weight.
Copolymerisable monomer composition may be used in acrylic polymers, introduce cross-linking set or the cohesive force for improving acrylic polymers.Copolymerisable monomer composition may be used singly or two or more in combination.
Particularly, as copolymerisable monomer composition, in order to introduce cross-linking set in acrylic polymers, can use containing monomer (especially for introduce in acrylic polymers heat cross-linking cross-linking set containing heat cross-linking monomer).As such containing monomer, as long as a monomer component of the functional group becoming cross-linking set can be had with (methyl) alkyl acrylate copolymer, be then not particularly limited.Can enumerate such as: carboxyl group-containing monomer and the acid anhydrides (maleic anhydride, itaconic anhydride etc.) thereof such as (methyl) vinylformic acid, methylene-succinic acid, β-crotonic acid, toxilic acid, fumaric acid, iso-crotonic acid; (methyl) hydroxyalkyl acrylate and the hydroxyl such as vinyl alcohol, the vinyl carbinol monomers such as (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, (methyl) vinylformic acid 2-hydroxybutyl; The amides monomers such as (methyl) acrylamide, N, N-dimethyl (methyl) acrylamide, N-butyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxymethyl-propane (methyl) acrylamide, N-methoxymethyl (methyl) acrylamide, N-butoxymethyl (methyl) acrylamide; (methyl) acrylate, (methyl) vinylformic acid N, the emulsion stabilities such as N-dimethylamino ethyl ester, (methyl) tbutylaminoethylacrylate; (methyl) glycidyl acrylate, (methyl) vinylformic acid methylglycidyl esters etc. are containing epoxy based monomers; The cyano-containing such as vinyl cyanide, methacrylonitrile monomer; NVP, N-methyl ethylene pyrrolidone, N-vinyl pyridine, N-vinylpiperidone, N-vinyl pyrimidine, N-vinyl piperazine, N-vinylpyrazine, N-vinyl pyrrole, N-vinyl imidazole, N-vinyl
azoles, N-polyvinyl morpholinone, N-caprolactam, N-(methyl) acryloyl morpholine etc. have the monomer of nitrogen atom ring; Deng.As containing monomer's composition, can preferably use the carboxyl group-containing monomers such as vinylformic acid or its acid anhydrides.
In addition, as copolymerisable monomer composition, in order to improve the cohesive force of acrylic polymers, other copolymerisable monomer composition can be used.As other copolymerisable monomer composition, can enumerate such as: the vinyl ester such as vinyl-acetic ester, propionate monomer, the styrene monomers such as vinylbenzene, substituted phenylethylene (alpha-methyl styrene etc.), Vinyl toluene, (methyl) acrylate ester [(methyl) cyclohexyl acrylate, (methyl) vinylformic acid ring pentyl ester etc.], (methyl) acrylate containing non-aromatic ring such as (methyl) vinylformic acid norbornene ester, (methyl) isobornyl acrylate, (methyl) acrylate containing aromatic ring such as (methyl) benzyl acrylate [(methyl) phenyl acrylate etc.], (methyl) vinylformic acid aryloxy alkyl ester [(methyl) acrylate etc.], (methyl) vinylformic acid aralkyl ester [(methyl) benzyl acrylate], the olefin monomers such as ethene, propylene, isoprene, divinyl, iso-butylene, vinylchlorid, vinylidene chloride, 2-(methyl) acryloyloxyethyl isocyanate etc. are containing isocyanate group monomer, (methyl) methoxyethyl acrylate, (methyl) ethoxyethyl acrylate etc. are containing Alkoxy monomeric, the vinyl ethers monomer such as methylvinylether, ethyl vinyl ether, 1, 6-hexylene glycol two (methyl) acrylate, ethylene glycol bisthioglycolate (methyl) acrylate, Diethylene Glycol two (methyl) acrylate, triethylene glycol two (methyl) acrylate, TEG two (methyl) acrylate, (gathering) ethylene glycol bisthioglycolate (methyl) acrylate, propylene glycol two (methyl) acrylate, (gathering) propylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, tetramethylolmethane two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, tetramethylolmethane three (methyl) acrylate, Dipentaerythritol six (methyl) acrylate, glycerine two (methyl) acrylate, epoxy acrylate, polyester acrylate, urethane acrylate, Vinylstyrene, butyleneglycol two (methyl) acrylate, the polyfunctional monomers such as hexylene glycol two (methyl) acrylate, Deng.
As rubber adhesive, can enumerate: with natural rubber, styrene isoprene styrene block copolymer (SIS) (SIS segmented copolymer), styrene-butadiene-styrene block copolymer (SBS block copolymer), styrene-ethylene/butylene-styrene block copolymer (SEBS segmented copolymer), styrene butadiene rubbers, polyhutadiene, polyisoprene, polyisobutene, isoprene-isobutylene rubber, chloroprene rubber, silicon rubber, acrylonitrile-butadiene rubber, the rubber adhesive etc. of polymkeric substance based on the rubber constituents such as ethylene-propylene terpolymer.
In addition, can as required containing known additives etc. such as such as linking agent, linking agent, tackifying resin, weighting agent, fire retardant, antiaging agent, antistatic agent, tenderizer, UV light absorber, antioxidant, softening agent, tensio-active agents in tackiness agent.
Binder layer can have any one form of individual layer, multilayer.
As binder layer (when double-sided adhesive sheet, one-sided binder layer) thickness, be not particularly limited, from considerations such as the viewpoints of the filming of adhesive sheet (such as double-faced adhesive tape), such as be preferably 1 ~ 200 μm, be more preferably 3 ~ 100 μm.
The formation method of binder layer is not particularly limited, and can enumerate such as: coating adhesive on the face of regulation, and carries out the method for drying, solidification as required; At the upper coating adhesive of partition (release liner), and carry out drying as required, be solidified to form binder layer, the face then this binder layer being fitted to regulation is carried out the method etc. of transfer printing.In addition, during the coating of tackiness agent, usual coating machine (such as gravure roll coating machine, reverse roll coating machine, touch roll coating machine, immerse roll-coater, metering bar coater, knife coater, spraying machine etc.) can be used.
In one preferred embodiment, above-mentioned binder layer is formed by containing the acrylic adhesives (A) of 80 ~ 100 % by weight acrylic polymerss, and described acrylic polymers contains 50 ~ 99 % by weight (methyl) alkyl acrylates and 1 ~ 10 % by weight carboxyl group-containing monomer as monomer component.In preferred embodiment, this acrylic adhesives (A) contains the linking agents such as 0.01 ~ 5 weight part isocyanates linking agent, epoxies linking agent relative to acrylic polymers 100 weight part.
(III) adhesive sheet
Fig. 1 is the sectional view of the schematic configuration of an example of the adhesive sheet schematically showing present embodiment.As shown in Figure 1, the adhesive sheet 10 of present embodiment possesses base material 5 and binder layer 3, the laminated substrate of base material 5 for plastic basis material 4, undercoat 2 and pigmented layer 1 being obtained according to this order is stacked.
In addition, the embodiment shown in Fig. 1 is the formation possessing binder layer 3 on the two sides of base material 5, but also can for only possessing the formation of binder layer 3 at the one side of base material 5.In addition, other layers such as prime coat can be possessed between base material 5 and binder layer 3.
Embodiment
Below, embodiment is enumerated and comparative example further illustrates the present invention.But the present invention is not subject to any restriction of following examples and comparative example.In addition, in the following description, " part " and " % " is not if be explicitly described as weight basis.
[embodiment 1]
(acrylic adhesives)
In the reactor possessing thermometer, agitator, nitrogen introducing tube and reflux condensing tube, drop into the positive butyl ester of 70 parts by weight of acrylic acid, 27 parts by weight of acrylic acid 2-ethylhexyls, 3 parts by weight of acrylic acid, 0.2 weight part Diisopropyl azodicarboxylate and the 235 weight parts ethyl acetate as polymer solvent, while introducing nitrogen, stir 1 hour.Thus, the oxygen in removing polymerization system, is then warmed up to 63 DEG C, reacts 10 hours.Then, cool to room temperature, obtains the acrylic polymer solution of solid component concentration 30 % by weight.In 100 weight parts (solids component conversion) this acrylic polymer solution, add 0.05 weight part four functional epoxy class linking agent (" テ ト ラ ッ De C " that gas chemical company of Mitsubishi manufactures), prepare transparent acrylic adhesives.
(double-faced adhesive tape)
At transparent polyethylene terephthalate (PET) film (" Le ミ ラ ー " that Dong Li company manufactures, thickness 4.5 μm) a face on utilize woodburytype to be coated with painted ground coating composition (material that black ink (" NB-300 ink " that the industrial that refines large day manufactures) mixes with the ratio of mixture of 30:70 with polyurethane based resin), thus form undercoat.
On above-mentioned undercoat, woodburytype is utilized to repeat coating five black inks (" NB-300 ink " that the industrial that refines large day manufactures), thus the black printed layer (5 layers) of formation total thickness 5 μm is as pigmented layer, obtains the duplexer (thickness: 10 μm) of the stacked formation of transparent PET base material/undercoat/black printed layer (5 layers).
Make the thickness of binder layer be 10 μm at the two sided coatings aforesaid propylene acrylic binder of this duplexer, obtain the double-faced adhesive tape of thickness 30 μm.
[comparative example 1]
Except not adding except pigment in undercoat, carrying out operation similarly to Example 1, obtaining double-faced adhesive tape.
(light leak evaluation)
For the double-faced adhesive tape obtained in embodiment 1, comparative example 1, evaluate as follows.
Evaluation method: bottom LED (20W) being arranged to the cylinder (diameter 75mm) of high 20cm in darkroom, arranges obtained double-faced adhesive tape on cylinder top.Whether light leak is produced from double-faced adhesive tape during visual confirmation irradiation LED lamp.
As a result, the adhesive tape obtained in comparative example 1 with the naked eye confirms the light leak that diameter is about more than 0.5mm, but the adhesive tape obtained in embodiment 1 does not have the light leak that can with the naked eye judge.
The invention is not restricted to aforesaid each embodiment, various change can be carried out, by separately disclosed technique means is appropriately combined and embodiment that is that obtain is also included within technical scope of the present invention by different embodiments in the scope shown in claim.
Claims (5)
1. an adhesive sheet, is characterized in that,
Possess base material and binder layer,
Described base material is by plastic basis material, undercoat and pigmented layer according to the stacked laminated substrate obtained of this order,
Described undercoat contains tinting material.
2. adhesive sheet as claimed in claim 1, wherein, in described undercoat, the content of tinting material is 0.01 ~ 60 % by weight.
3. adhesive sheet as claimed in claim 1 or 2, wherein, described pigmented layer is black.
4. the adhesive sheet according to any one of claims 1 to 3, wherein, described tinting material is black.
5. the adhesive sheet according to any one of Claims 1 to 4, wherein, described binder layer is the binder layer formed by acrylic adhesives.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-192678 | 2013-09-18 | ||
| JP2013192678 | 2013-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104449443A true CN104449443A (en) | 2015-03-25 |
| CN104449443B CN104449443B (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410479770.9A Active CN104449443B (en) | 2013-09-18 | 2014-09-18 | Adhesive sheet |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6501468B2 (en) |
| KR (1) | KR102353279B1 (en) |
| CN (1) | CN104449443B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256864A (en) * | 2015-06-19 | 2016-12-28 | 日东电工株式会社 | Surface protective film |
| CN108633283A (en) * | 2015-07-23 | 2018-10-09 | 株式会社Lg化学 | Double-faced adhesive tape and its manufacturing method for display |
| CN114784314A (en) * | 2021-01-22 | 2022-07-22 | 上海神力科技有限公司 | Fuel cell bipolar plate sealing method, fuel cell and vehicle |
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| JP2020164615A (en) | 2019-03-29 | 2020-10-08 | 日東電工株式会社 | Pressure sensitive adhesive sheet |
| KR102374058B1 (en) * | 2020-01-06 | 2022-03-15 | 에스케이씨 주식회사 | Multilayer film and preparation method thereof |
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| KR102479168B1 (en) * | 2022-01-28 | 2022-12-20 | 김규동 | Silicone adhesive composition and silicone adhesive tape comprising the same |
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| CN108633283A (en) * | 2015-07-23 | 2018-10-09 | 株式会社Lg化学 | Double-faced adhesive tape and its manufacturing method for display |
| CN108633283B (en) * | 2015-07-23 | 2021-06-25 | 株式会社Lg化学 | Double-sided adhesive tape for display and method of manufacturing the same |
| CN114784314A (en) * | 2021-01-22 | 2022-07-22 | 上海神力科技有限公司 | Fuel cell bipolar plate sealing method, fuel cell and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150032464A (en) | 2015-03-26 |
| JP2015083660A (en) | 2015-04-30 |
| JP6501468B2 (en) | 2019-04-17 |
| KR102353279B1 (en) | 2022-01-19 |
| CN104449443B (en) | 2020-04-10 |
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