Summary of the invention
(problem that invention will solve)
The purpose of this invention is to provide a kind of substrate with wiping contact, decoration and/or electromagnetic wave absorption function that to take off on mobile electronic device that pastes.
And, the purpose of this invention is to provide a kind of decorating board that can take off that pastes with two-sided decoration functions.
(method of dealing with problems)
According to the present invention can by provide a kind of by at the dismounting layer that uses the position to paste can to take off, be combined in basement membrane on the described dismounting layer, be combined in described epilamellar foam piece by adhesive linkage and be combined in the laminated substrate that the cosmetic sheet on the described foam piece is formed by adhesive linkage.Wherein, described dismounting layer is with by being that the composition that 0.05 to 2 weight portion light trigger of benchmark is formed is coated on the substrate that carried out lift-off processing by the acrylic acid series copolymerized oligomer with described acrylic acid series copolymerized oligomer, irradiation ultraviolet radiation and making then, described acrylic acid series copolymerized oligomer contains the rudimentary alkyl acrylate of 50 to 95 parts by weight of acrylic 2-ethylhexyls and 5 to 50 weight portions.
And, a kind of manufacture method of the multi-functional laminated substrate of being made up of decorating film or superfine fibre bunting, second adhesive linkage, foam piece, first adhesive linkage, PET basement membrane and dismounting layer can be provided according to the present invention, the method includes the steps of: with the copolymerized oligomer of certain thickness coating 2-ethylhexyl acrylate+rudimentary alkyl acrylate and the composition of light trigger, shine the step that forms the dismounting layer with uviol lamp 27 on the base material that carried out lift-off processing; The step that PET basement membrane and described dismounting layer are closed substrate; On the substrate that carried out lift-off processing, form the step of first adhesive linkage with carbamate or acrylic acid series bonding agent; The step that does not have applied face and described first adhesive linkage to close substrate described PET basement membrane; Take off closing the substrate of peeling off of substrate at epilamellar first adhesive linkage of PET, and the step of closing substrate with foam piece; On the substrate that carried out lift-off processing, form the step of second adhesive linkage with carbamate or acrylic acid series bonding agent; With decorating film or decorate superfine fibre cloth and step that described second adhesive linkage closes substrate; And from transfer printing the decorating film of described second adhesive linkage or bunting take off and peel off substrate, and the step of closing substrate with described foam piece.Close the substrate order and can carry out multiple combination according to different situations.
Described cosmetic sheet is the nonwoven of being made by superfine fibre, has the function of cleaning communication apparatus.And described basement membrane and/or cosmetic sheet can be the resin moldings with presentation functions such as decoration or holograms.
Described basement membrane is the base material as substrate, though there is no particular limitation, and the preferred polyester film.Described polyester film is because transparency is good, intensity is high, the convenient manufacturing is widely used, and particularly PET (PET) material can buy the sheet material of all thickness in market.On described polyester basement membrane, can print the hologram of expression substrate performance.Can stick on the base material such as glass and carry out two-sided expression, though cannot see when perhaps pasting, because when circulation, can see, and can be used for representing purposes and the quality of substrate.In the present invention, the thickness of polyester sheet is preferred 12 to 36 microns.If the thickness of sheet material is below 12 microns, then the weak strength of laminate may produce fold when closing substrate.If too thick, then operation is carried out difficulty, and the flexibility of laminate reduces.
Copolymerized oligomer based on 2-ethylhexyl acrylate is carried out emulsion polymerization to described dismounting layer or photopolymerization is made.Though this dismounting layer can be behind the composition of described basement membrane coating oligomer and light trigger, carry out that illumination is penetrated and directly form, preferably on the sheet material that carried out lift-off processing, after being coated with once, be transferred on the basement membrane again.This dismounting layer preferably will contain the acrylic acid series copolymerized oligomer and be the composition of light trigger of 0.05 to 2 weight portion of benchmark with described acrylic acid series copolymerized oligomer, be coated on the substrate that carried out lift-off processing, then irradiation ultraviolet radiation and making.Described acrylic acid series copolymerized oligomer contains 2-ethylhexyl acrylate (2-ethylhexyl acrylate; 2-EHA) 50 to 95 weight portions and rudimentary alkyl acrylate, for example n-butylacrylate (n-butyl acrylate; N-BA), 5 to 50 weight portions.Described acrylic acid series copolymerized oligomer can also contain following acrylic acid (the acrylic acid of 10 weight portions; AA) monomer.Described composition can also contain a spot of bonding imparting agent, for example resin or the terpene of the scope below the 10 weight %.
Described foam piece can increase texture and the aesthetic feeling of substrate, does the time spent at substrate as the wiping contact chip, makes substrate have suitable elasticity, the convenient use.This foam piece can be used various foaming sheets.For example polyethylene sheet, eva foam sheet, polyurethane foam sheet or acrylic compounds foam piece.
Described cosmetic sheet has been used the nonwoven of superfine fibre.The polypropylene melt blown non-woven fabric that has used superfine fibre is exactly an example of superfine fibre nonwoven cloth.Because this cosmetic sheet can be presented at the outside, so can bring the printing of various decorative effects.Can also not use PET hologram sheet material with the purpose of identification or decoration merely with wiping contact function.
The adhesive linkage that uses between basement membrane, foam piece and cosmetic sheet is extensive use of the acrylic acid series bonding agent or carbamate is bonding agent.In order to reduce the distortion of integral layer laminated sheet, in the application of bonding agent, than directly being coated on the base material, must form adhesive linkage at substrate or the plastic sheet that silicone etc. carried out lift-off processing, and close substrate with basement membrane or foam piece, just can obtain having the adhesive linkage of accurate thickness and specification.
Described foam piece is to sneak into electromagnetic wave absorption powder, namely foams behind carbon dust, metal or the metal alloy powders such as ferrosilicon, ferromanganese, just can give electromagnetic wave shielding or assimilation effect.According to different situations, can sneak into electro-magnetic wave absorption with the amount of 1 to 5 weight % at the described adhesive linkage that is used for bonding cosmetic sheet and use with powder.
The acrylic acid series bonding agent of Shi Yonging is made of acrylic acid series copolymer and solvent in the present invention.As required, can also contain polymerizable monomer, oligomer and initator, further solidify thereby penetrate in the environment in heat or illumination.Described bonding agent is that the carboxylic acid monomer partly is that 0~10 weight portion, viscosity are that more than one acrylate monomer+ethene of 500~50,000 centipoise is that carboxylic acid monomer's acrylic acid series copolymer is as main component with ethene.The acrylate monomer that is used for acrylic acid series copolymer has methyl acrylate, methyl methacrylate, acrylic acid ethyl ester, methacrylic acid ethyl ester, butyl acrylate cores, fumaric acid dimethyl esters, fumaric acid diethyl ester, maleic acid dimethyl esters, itaconic acid dimethyl esters, fumaric acid monomethyl ester, fumaric acid monoethyl ester, 2-ethylhexyl acrylate etc.Preferred methyl acrylate, methyl methacrylate, acrylic acid ethyl ester or methacrylic acid ethyl ester, most preferable acrylic acid ethyl ester.Be that unsaturated carboxylic acid monomer can be enumerated acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid etc. as ethene.Preferred acrylic acid.Acrylic acid preferably uses 1 to 6 weight portion in copolymerized oligomer.As required, vinyl monomer can also be contained and initator further is cured.Light trigger is for example benzophenone, chloroacetophenone, diethoxy acetophenone, hydroxy acetophenone, 1-hydroxy-cyclohexyl phenyl ketone, benzoin ether, benzyl dimethyl ketal, thioxanthone or their mixture.Preferred 1-hydroxy-cyclohexyl phenyl ketone 0.3 to 1 weight portion.
The polyurethane adhesive of Shi Yonging can be prepared with various prescriptions in the present invention.One of them example is exactly as main component with polyurethane prepolymer; add a spot of protected vulcabond; under normal temperature condition; carrying out vacation by the evaporation of solvent solidifies; make protected isocyanates activation by adding pyrolysis, and be cured by urethane reaction.Protective agent as vulcabond has phenol, phenol derivatives, oxime, lactams, dialkyl group malonic acid, pyrazole derivatives, triazole and imidazoles etc.
Another kind of mode be exactly with polyurethane prepolymer as main component, add the carbamate prepolymer diacrylate, add a spot of crosslinked composition again, the initiation cross-linking reaction is carried out heat cure.At this moment, be to use the crosslinked composition of nucleophilicity heat reactivity and the crosslinked composition of electrophilicity heat reactivity as crosslinked composition.Contain the monomer as the hydroxy alkyl of the crosslinked composition of nucleophilicity heat reactivity, can use acrylic acid 2-hydroxyethyl ester, methacrylic acid 2-hydroxymethyl ester, the acrylic acid hydroxy-propyl ester, methacrylic acid hydroxyl propyl diester, acrylic acid hydroxybutyl ester, methacrylic acid hydroxyl butyl ester, methacrylic acid 3-chloro-2-hydroxy-propyl ester and acrylic acid 2-hydroxyl-3-phenoxy propyl ester etc., be that acid amides and ethene are that amine can use acrylamide as ethene, Methacrylamide, N hydroxymethyl acrylamide, N hydroxymethyl acrylamide, N,N-DMAA, and the amine corresponding with them.Preferred use ethene is acid amides 0.1 to 3 weight portion.And, as the operable glycidyl compound of the crosslinked composition of electrophilicity heat reactivity glycidyl acrylate, glycidyl methacrylate, methyl glycidyl acrylate, allyl glycidol acid esters etc. are arranged.Electrophilicity alkyl, aryl or aralkyl peroxide can use tert butyl peroxy benzoate, di-tert-butyl peroxide, lauryl peroxide, benzoyl peroxide etc.And, can also use maleic anhydride.Preferred glycidyl methacrylate 0.1 to 3 weight portion that uses.
Also having another kind of mode is to be main component with the polyurethane prepolymer, and it is bonding agent that interpolation initator and acrylate cooperate carbamate.Acrylate uses mono acrylic ester and/or diacrylate.As the diacrylate ester compounds for example carbamate prepolymer diacrylate is arranged, 1, the 6-hexanediyl ester, 1,6-hexylene glycol ethyoxyl diacrylate, 1,4-butanediol diacrylate, tetraethylene glycol diacrylate, the hydroxy new pentane acid neopentylglycol diacrylate, tri (propylene glycol) diacrylate, the dipropylene glycol diacrylate, polyethyleneglycol diacrylate, bisphenol-A ethyoxyl diacrylate, the trimethylolpropane tris alkylates, glycerine propoxyl group triacrylate, pentaerythritol triacrylate, dipentaerythritol five acrylate or two (pentaerythrite six acrylic acid esters) etc.As the mono acrylic ester compound for example isobornyl acrylate, isobornyl methacrylate, methacrylic acid 2-hydroxyethyl ester, acrylic acid 2-hydroxyethyl ester, methacrylic acid, acrylic acid, methyl methacrylate, methyl acrylate, ethylene glycol dimethacrylate or triethylene-glycol dimethylacrylate etc. are arranged.Be to use decomposition temperature than the azo compound of higher R-N=N-R ' structural formula as initator.
This acrylic acid series bonding agent or carbamate are that the solid constituent of bonding agent is to use solvent dilution more than 2 times.Solvent commonly used has BTX solvent and ketone, for example uses MIBK and MEK etc.Such carbamate is bonding agent, is by roller coat or comma coating, preferably with the thickness of 20 μ m to 150 mu m ranges, carries out lining to a certain degree.Be coated on the bonding agent on the substrate that carried out lift-off processing, before being used for transfer printing, in the thermostatic chamber that is adjusted to 40 to 70 ℃ of scopes, carry out heated-air drying.Such heated-air drying was preferably carried out 1 minute to several minutes.
(invention effect)
The decorating board that can take off of pasting according to the present invention has decorative effect or absorbs the electromagnetic effect of electronic equipment when pasting, and in use, can take to carry out cleaning function off.This decorating board not only can be used for electronic equipment, also is used in windowpane, wall or billboard and represents.
Description of drawings
Fig. 1 is the schematic diagram of expression calendering procedure of the present invention.
Fig. 2 is the profile of laminated substrate of the present invention.
Reference numeral:
1 is the superfine fibre bunting;
2 for containing the adhesive linkage that the battery ripple absorbs powder;
3 is the eva foam sheet;
4 is adhesive linkage;
5 is the PET basement membrane;
6 are the dismounting layer;
7 for peeling off substrate;
11,12,13,14,15,16,17,18,19,20 are volume substrate machine;
21,22,23,24 is roll coater;
26 is scraper;
31,33,34,35,36 for closing substrate roll;
25,28,29,30 is driven roller; 37 is chill roll;
38 is deflector roll;
40,41,44,45 is drying oven or heating furnace.
The specific embodiment
The present invention is described in detail with reference to the accompanying drawings.Such explanation is that protection scope of the present invention is not limited to this for illustration the present invention.On the substrate base material through the volume substrate machine 11 of lift-off processing such as silicone, utilize roll coater 21 and scraper 26, with the copolymerized oligomer of certain thickness coating 2-ethylhexyl acrylate+rudimentary alkyl acrylate and the composition of light trigger, carry out illumination with uviol lamp 27 and penetrate formation dismounting layer, 12 microns to 36 microns PET basement membrane and the described dismounting layer of rolling up substrate machine 12 closed substrate with closing substrate roll 31.After closing substrate, in curing oven 40, slaking is 6 hours between 40 degree are spent to 70.The thickness of dismounting layer preferably sets the scope about 60 microns to 100 microns.
With the dismounting laminated substrate of described manufacturing before the eva foam sheet, at first utilize roll coater 22 and scraper 26, the carrying out of volume substrate machine 13 on the substrate of lift-off processing, with acrylic copolymer, ethyl acetate and solvent with 40 microns of 3: 1: 6 proportioning coatings after, in drying oven 41, form adhesive linkage at 80 degree to carrying out heated drying between 90 degree.The rate of drying of this moment is below the per minute 15m.To carry out the applied face that do not have of the adhesive linkage of the transfer substrate after the solvent seasoning and described PET basement membrane, be heated to about 40 degree, and utilize and close substrate roll 33 and close substrate.Take off from described adhesive linkage and to peel off substrate and to close substrate with the eva foam sheet.
The carrying out of volume substrate machine 17 on the substrate base material of lift-off processing, can form adhesive linkage according to the method described above, but the proportioning of acrylic copolymer, ethyl acetate and solvent is 3: 1: 6, and their total amount is made as 100 weight %, adds ferromanganese powder 3 weight % again.Close substrate with the PET decorating film that is printed on hologram or the decoration superfine fibre cloth of volume substrate machine 18 by closing substrate roll 35.
The transfer printing of volume substrate machine 19 there are decorating film or the bunting of described adhesive linkage, after peeling off substrate and taking off, have the eva foam sheet of described dismounting layer finally to close substrate with the substrate that closes of volume substrate machine 16.With the laminate that all closes after the substrate operation finishes, in curing oven 45, at 40 degree to slaking between 60 degree about 12 hours and obtain laminate.After with chill roll 37 described laminate being cooled to normal temperature, on the reel-to-reel substrate machine 20.The final laminate of volume substrate machine 20 is cut into individual substrate, obtain final products.As shown in Figure 2, the laminated substrate of cutting from top to bottom by superfine fibre bunting 1, contain adhesive linkage 2, eva foam sheet 3, adhesive linkage 4, PET basement membrane 5, dismounting layer 6 that the battery ripple absorbs powder, peel off substrate 7 and form.