JP2015083660A - Adhesive sheet - Google Patents
Adhesive sheet Download PDFInfo
- Publication number
- JP2015083660A JP2015083660A JP2014176948A JP2014176948A JP2015083660A JP 2015083660 A JP2015083660 A JP 2015083660A JP 2014176948 A JP2014176948 A JP 2014176948A JP 2014176948 A JP2014176948 A JP 2014176948A JP 2015083660 A JP2015083660 A JP 2015083660A
- Authority
- JP
- Japan
- Prior art keywords
- meth
- sensitive adhesive
- layer
- pressure
- acrylate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001070 adhesive effect Effects 0.000 title abstract description 21
- 239000000853 adhesive Substances 0.000 title abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 92
- 239000000463 material Substances 0.000 claims abstract description 58
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 239000003086 colorant Substances 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- 229940048053 acrylate Drugs 0.000 description 53
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 52
- -1 acryl Chemical group 0.000 description 49
- 239000000178 monomer Substances 0.000 description 49
- 238000000034 method Methods 0.000 description 19
- 229920000058 polyacrylate Polymers 0.000 description 13
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 7
- 239000003431 cross linking reagent Substances 0.000 description 7
- 239000000049 pigment Substances 0.000 description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 7
- 239000005020 polyethylene terephthalate Substances 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001723 curing Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 125000000524 functional group Chemical group 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 150000008065 acid anhydrides Chemical class 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229940114077 acrylic acid Drugs 0.000 description 3
- 239000003522 acrylic cement Substances 0.000 description 3
- 125000005907 alkyl ester group Chemical group 0.000 description 3
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 3
- 150000004056 anthraquinones Chemical class 0.000 description 3
- 239000002216 antistatic agent Substances 0.000 description 3
- 229920001400 block copolymer Polymers 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000007646 gravure printing Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical group C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 2
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000767 polyaniline Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920005990 polystyrene resin Polymers 0.000 description 2
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- HXQKJEIGFRLGIH-UHFFFAOYSA-N 1-ethenyl-2h-pyrazine Chemical group C=CN1CC=NC=C1 HXQKJEIGFRLGIH-UHFFFAOYSA-N 0.000 description 1
- OZFIGURLAJSLIR-UHFFFAOYSA-N 1-ethenyl-2h-pyridine Chemical compound C=CN1CC=CC=C1 OZFIGURLAJSLIR-UHFFFAOYSA-N 0.000 description 1
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical group C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 description 1
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical group C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 1
- DCRYNQTXGUTACA-UHFFFAOYSA-N 1-ethenylpiperazine Chemical group C=CN1CCNCC1 DCRYNQTXGUTACA-UHFFFAOYSA-N 0.000 description 1
- PBGPBHYPCGDFEZ-UHFFFAOYSA-N 1-ethenylpiperidin-2-one Chemical compound C=CN1CCCCC1=O PBGPBHYPCGDFEZ-UHFFFAOYSA-N 0.000 description 1
- CTXUTPWZJZHRJC-UHFFFAOYSA-N 1-ethenylpyrrole Chemical group C=CN1C=CC=C1 CTXUTPWZJZHRJC-UHFFFAOYSA-N 0.000 description 1
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 1
- BFYSJBXFEVRVII-UHFFFAOYSA-N 1-prop-1-enylpyrrolidin-2-one Chemical compound CC=CN1CCCC1=O BFYSJBXFEVRVII-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- YSUQLAYJZDEMOT-UHFFFAOYSA-N 2-(butoxymethyl)oxirane Chemical group CCCCOCC1CO1 YSUQLAYJZDEMOT-UHFFFAOYSA-N 0.000 description 1
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- BEWCNXNIQCLWHP-UHFFFAOYSA-N 2-(tert-butylamino)ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCNC(C)(C)C BEWCNXNIQCLWHP-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- WNISWKAEAPQCJQ-UHFFFAOYSA-N 2-[(2-nonylphenoxy)methyl]oxirane Chemical compound CCCCCCCCCC1=CC=CC=C1OCC1OC1 WNISWKAEAPQCJQ-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- NPSJHQMIVNJLNN-UHFFFAOYSA-N 2-ethylhexyl 4-nitrobenzoate Chemical compound CCCCC(CC)COC(=O)C1=CC=C([N+]([O-])=O)C=C1 NPSJHQMIVNJLNN-UHFFFAOYSA-N 0.000 description 1
- 239000004808 2-ethylhexylester Substances 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- DPNXHTDWGGVXID-UHFFFAOYSA-N 2-isocyanatoethyl prop-2-enoate Chemical compound C=CC(=O)OCCN=C=O DPNXHTDWGGVXID-UHFFFAOYSA-N 0.000 description 1
- AUZRCMMVHXRSGT-UHFFFAOYSA-N 2-methylpropane-1-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CC(C)CS(O)(=O)=O AUZRCMMVHXRSGT-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- YYIOIHBNJMVSBH-UHFFFAOYSA-N 2-prop-2-enoyloxynaphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=C(OC(=O)C=C)C=CC2=C1 YYIOIHBNJMVSBH-UHFFFAOYSA-N 0.000 description 1
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical compound N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 description 1
- NIAXWFTYAJQENP-UHFFFAOYSA-N 3-ethenyl-2h-1,3-oxazole Chemical group C=CN1COC=C1 NIAXWFTYAJQENP-UHFFFAOYSA-N 0.000 description 1
- CYUZOYPRAQASLN-UHFFFAOYSA-N 3-prop-2-enoyloxypropanoic acid Chemical compound OC(=O)CCOC(=O)C=C CYUZOYPRAQASLN-UHFFFAOYSA-N 0.000 description 1
- CFZDMXAOSDDDRT-UHFFFAOYSA-N 4-ethenylmorpholine Chemical group C=CN1CCOCC1 CFZDMXAOSDDDRT-UHFFFAOYSA-N 0.000 description 1
- SXIFAEWFOJETOA-UHFFFAOYSA-N 4-hydroxy-butyl Chemical group [CH2]CCCO SXIFAEWFOJETOA-UHFFFAOYSA-N 0.000 description 1
- JSZCJJRQCFZXCI-UHFFFAOYSA-N 6-prop-2-enoyloxyhexanoic acid Chemical compound OC(=O)CCCCCOC(=O)C=C JSZCJJRQCFZXCI-UHFFFAOYSA-N 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
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- 239000006234 thermal black Substances 0.000 description 1
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- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
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Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本発明は粘着シートに関する。 The present invention relates to an adhesive sheet.
従来、携帯電話やタッチパネル等の液晶表示装置においては、表示画面に関する液晶表示モジュールユニットとバックライトユニットとの間に、遮光性層を有する粘着シートが用いられている。上記遮光性層はバックライト光が液晶表示モジュール側に漏れることを防ぎ、視認性を向上する効果を発揮する。 Conventionally, in a liquid crystal display device such as a mobile phone or a touch panel, an adhesive sheet having a light shielding layer is used between a liquid crystal display module unit and a backlight unit related to a display screen. The light-shielding layer prevents the backlight from leaking to the liquid crystal display module side, and exhibits the effect of improving visibility.
このような遮光性層を備えた粘着シートとして、プラスチック基材上に黒色の印刷層を設けた積層基材に粘着剤層を設けた構成が知られている（例えば、特許文献１参考）。 As a pressure-sensitive adhesive sheet provided with such a light-shielding layer, a structure in which a pressure-sensitive adhesive layer is provided on a laminated base material provided with a black printed layer on a plastic base material is known (for example, see Patent Document 1).
上記のような粘着シートに用いられる積層基材では、通常、印刷層とプラスチック基材との接着性を向上させるため、印刷層とプラスチック基材との間にプライマー層を設ける。しかし、プライマー層は、その表面が平滑ではないため、その上に積層される印刷層の厚さにバラツキが生じ得る。このため、使用形態によっては、印刷層が薄い部分から光が漏れる場合がある。 In the laminated substrate used for the pressure-sensitive adhesive sheet as described above, a primer layer is usually provided between the printed layer and the plastic substrate in order to improve the adhesion between the printed layer and the plastic substrate. However, since the surface of the primer layer is not smooth, the thickness of the printed layer laminated thereon may vary. For this reason, depending on the usage pattern, light may leak from a portion where the printed layer is thin.
そこで本発明の目的は、プライマー層を設けた場合であっても、粘着特性を悪化させることなく、遮光性により優れた粘着シートを提供することにある。 Therefore, an object of the present invention is to provide a pressure-sensitive adhesive sheet that is more excellent in light-shielding properties without deteriorating the pressure-sensitive adhesive characteristics even when a primer layer is provided.
本発明に係る粘着シートは、上記課題を解決するために、基材と粘着剤層とを備え、上記基材は、プラスチック基材と、プライマー層と、着色層とをこの順に積層した積層基材であり、上記プライマー層が着色剤を含むことを特徴としている。 In order to solve the above problems, the pressure-sensitive adhesive sheet according to the present invention includes a base material and a pressure-sensitive adhesive layer, and the base material is a laminated base in which a plastic base material, a primer layer, and a colored layer are laminated in this order. It is a material and the said primer layer is characterized by including a coloring agent.
ここに開示される粘着シートにおいては、上記プライマー層における着色剤の含有量が０．０１〜６０重量％であることが好ましい。 In the pressure-sensitive adhesive sheet disclosed herein, the content of the colorant in the primer layer is preferably 0.01 to 60% by weight.
また、ここに開示される粘着シートにおいては、上記着色層が黒色であることが好ましい。 Moreover, in the adhesive sheet disclosed here, it is preferable that the said colored layer is black.
さらには、ここに開示される粘着シートにおいては、上記着色剤が黒色であることが好ましい。 Furthermore, in the adhesive sheet disclosed here, the colorant is preferably black.
また、ここに開示される粘着シートにおいては、上記粘着剤層が、アクリル系粘着剤から形成された粘着剤層であることが好ましい。 Moreover, in the adhesive sheet disclosed here, it is preferable that the said adhesive layer is an adhesive layer formed from the acrylic adhesive.
本発明によると、プライマー層を設けた場合であっても、粘着特性を悪化させることなく、遮光性により優れた粘着シートを提供することができる。 According to the present invention, even when a primer layer is provided, a pressure-sensitive adhesive sheet that is more excellent in light-shielding properties can be provided without deteriorating the pressure-sensitive adhesive properties.
以下、本発明について具体的に説明する。 Hereinafter, the present invention will be specifically described.
本発明に係る粘着シートは、基材と粘着剤層とを備える。 The pressure-sensitive adhesive sheet according to the present invention includes a base material and a pressure-sensitive adhesive layer.
なお、本明細書では、範囲を示す「Ａ〜Ｂ」は、Ａ以上Ｂ以下であることを意味する。本明細書で挙げられている各種物性は、特に断りのない限り後述する実施例に記載の方法により測定した値を意味する。また、本明細書において、「（メタ）アクリル酸」等における「（メタ）アクリル」は「アクリルおよび／またはメタクリル」を意味する。さらには、本明細書において「粘着シート」には、テープ状の構成、すなわち「粘着テープ」も含まれる。 In the present specification, “A to B” indicating a range means A or more and B or less. Various physical properties mentioned in the present specification mean values measured by the methods described in the examples described later unless otherwise specified. In the present specification, “(meth) acryl” in “(meth) acrylic acid” and the like means “acryl and / or methacryl”. Further, in the present specification, the “adhesive sheet” includes a tape-like structure, that is, an “adhesive tape”.
また、本明細書における「主成分」とは、その組成において重量基準で最も含有割合が高い成分を意味し、通常は５０重量％以上であることを意味する。 In addition, the “main component” in the present specification means a component having the highest content ratio on a weight basis in the composition, and usually means 50% by weight or more.
（Ｉ）基材
上記基材は、プラスチック基材（プラスチック基材層）と、プライマー層と、着色層とをこの順に積層した積層基材である。基材の総厚さは、例えば、０．１〜１００μｍとすることができ、１〜５０μｍが好ましく、５〜２０μｍがより好ましい。
(I) Base Material The base material is a laminated base material in which a plastic base material (plastic base material layer), a primer layer, and a colored layer are laminated in this order. The total thickness of a base material can be 0.1-100 micrometers, for example, 1-50 micrometers is preferable and 5-20 micrometers is more preferable.
（プラスチック基材）
上記プラスチック基材は、特には限定されない。プラスチック基材の材質または素材としては、例えば、ポリエステル（ポリエチレンテレフタレート（ＰＥＴ）、ポリエチレンナフタレート、ポリブチレンテレフタレート、ポリブチレンナフタレート等）、ポリオレフィン（ポリエチレン、ポリプロピレン、エチレン−プロピレン共重合体等）、ポリビニルアルコール、ポリ塩化ビニリデン、ポリ塩化ビニル、塩化ビニル−酢酸ビニル共重合体、ポリ酢酸ビニル、ポリアミド、ポリイミド、セルロース類、フッ素系樹脂、ポリエーテル、ポリスチレン系樹脂（ポリスチレン等）、ポリカーボネート、ポリエーテルスルホン等が挙げられる。なかでも、コスト、強度等の観点から、ポリエステルが好ましく、特にポリエチレンテレフタレートが好ましい。これらの材質は単独でまたは２種以上を組み合わせて用いることができ、また、単層、多層のいずれの形態を有していてもよい。
(Plastic substrate)
The plastic substrate is not particularly limited. Examples of the plastic substrate material or material include polyester (polyethylene terephthalate (PET), polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, etc.), polyolefin (polyethylene, polypropylene, ethylene-propylene copolymer, etc.), Polyvinyl alcohol, polyvinylidene chloride, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, polyamide, polyimide, celluloses, fluororesins, polyethers, polystyrene resins (polystyrene, etc.), polycarbonates, polyethers And sulfone. Of these, polyesters are preferable from the viewpoints of cost, strength, and the like, and polyethylene terephthalate is particularly preferable. These materials can be used singly or in combination of two or more kinds, and may have any form of single layer or multilayer.
上記基材中には、必要に応じて、例えば、充填剤、難燃剤、老化防止剤、帯電防止剤、軟化剤、紫外線吸収剤、酸化防止剤、可塑剤、界面活性剤等の公知の添加剤等が含まれていてもよい。 In the above-mentioned base material, known additions such as fillers, flame retardants, anti-aging agents, antistatic agents, softeners, ultraviolet absorbers, antioxidants, plasticizers, surfactants, etc., if necessary An agent or the like may be included.
プラスチック基材の厚さ（プラスチック基材層が複数ある場合には総厚さ）は、例えば、１〜５０μｍであり、好ましくは１μｍ〜３０μｍであり、より好ましくは２〜２０μｍである。 The thickness of the plastic substrate (the total thickness when there are a plurality of plastic substrate layers) is, for example, 1 to 50 μm, preferably 1 to 30 μm, and more preferably 2 to 20 μm.
基材の形成方法は、特に制限されず、例えば、プラスチック基材を構成する樹脂組成物を用いて、押出成型、インフレーション成型、カレンダ成型等の成型方法を利用してシート状に成型させる方法等が挙げられる。強度の観点から、延伸配向させることが好ましい。 The method of forming the substrate is not particularly limited, and for example, a method of forming a sheet using a resin composition constituting a plastic substrate using a molding method such as extrusion molding, inflation molding, calendar molding, etc. Is mentioned. From the viewpoint of strength, it is preferable to stretch and align.
（プライマー層）
上記プライマー層は、着色剤を含む。プライマー層としては、従来公知の構成が挙げられ、特には限定されず、例えば、ウレタン（ポリイソシアネート）系樹脂、ポリエステル系樹脂、アクリル系樹脂、ポリアミド系樹脂、メラミン系樹脂、オレフィン系樹脂、ポリスチレン系樹脂、エポキシ系樹脂、フェノール系樹脂、イソシアヌレート系樹脂、ポリ酢酸ビニル系樹脂等が挙げられる。なかでも、プラスチック基材（例えばＰＥＴ基材）と印刷層との接着性を向上させる観点から、両者と相性の良い、ウレタン系樹脂、アクリル系樹脂が好ましい。これらプライマー層の形成材料としては、ガラス転移点２０℃以上、さらには２０〜１２０℃のものが好ましく用いられる。
(Primer layer)
The primer layer includes a colorant. Examples of the primer layer include conventionally known configurations, and are not particularly limited. For example, urethane (polyisocyanate) resin, polyester resin, acrylic resin, polyamide resin, melamine resin, olefin resin, polystyrene Resin, epoxy resin, phenol resin, isocyanurate resin, polyvinyl acetate resin and the like. Among these, from the viewpoint of improving the adhesion between a plastic substrate (for example, a PET substrate) and a printed layer, urethane resins and acrylic resins that are compatible with both are preferable. As a material for forming these primer layers, those having a glass transition point of 20 ° C. or higher, and further 20 to 120 ° C. are preferably used.
また、上記プライマー層に用いられる樹脂は、架橋硬化、重合、縮合等の反応性を有し、反応させることで上記物性を発現するようなものでもよい。架橋硬化等には架橋剤を適宜に添加することができる。さらには、プライマー層中に、帯電防止剤等の機能性添加剤を添加して、他の機能を付与することもできる。 Moreover, the resin used for the primer layer may have a reactivity such as cross-linking curing, polymerization, condensation, and the like, and may exhibit the physical properties by being reacted. A crosslinking agent can be appropriately added to the crosslinking and curing. Furthermore, a functional additive such as an antistatic agent can be added to the primer layer to impart other functions.
上記プライマー層の形成材料の好適例としては、アクリル系樹脂が挙げられる。当該アクリル系樹脂としては、例えば、メタクリル酸メチルを主成分とし、これにメタクリル酸メチル以外の（メタ）アクリル酸アルキルエステルや共重合性モノマーを共重合した共重合体が用いられる。 Preferable examples of the material for forming the primer layer include acrylic resins. As the acrylic resin, for example, a copolymer having methyl methacrylate as a main component and copolymerized with a (meth) acrylic acid alkyl ester other than methyl methacrylate or a copolymerizable monomer is used.
上記（メタ）アクリル酸アルキルエステルのアルキルエステルとしては、例えば、メチルエステル、エチルエステル、プロピルエステル、イソプロピルエステル、ブチルエステル、イソブチルエステル、ｓ−ブチルエステル、ｔ−ブチルエステル、ペンチルエステル、イソペンチルエステル、ヘキシルエステル、ヘプチルエステル、オクチルエステル、２−エチルヘキシルエステル、イソオクチルエステル、ノニルエステル、デシルエステル、イソデシルエステル、ウンデシルエステル、ドデシルエステル、トリデシルエステル、テトラデシルエステル、ヘキサデシルエステル、オクタデシルエステル、エイコシルエステル等のアルキル基の炭素数１〜３０、特に炭素数４〜１８の直鎖状または分岐鎖状のアルキルエステル等が挙げられる。 Examples of the alkyl ester of the above (meth) acrylic acid alkyl ester include methyl ester, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, s-butyl ester, t-butyl ester, pentyl ester, isopentyl ester. Hexyl ester, heptyl ester, octyl ester, 2-ethylhexyl ester, isooctyl ester, nonyl ester, decyl ester, isodecyl ester, undecyl ester, dodecyl ester, tridecyl ester, tetradecyl ester, hexadecyl ester, octadecyl ester And a linear or branched alkyl ester having 1 to 30 carbon atoms, particularly 4 to 18 carbon atoms, of an alkyl group such as eicosyl ester.
上記共重合性モノマーとしては、例えば、（メタ）アクリル酸、カルボキシエチルアクリレート、カルボキシペンチルアクリレート、イタコン酸やマレイン酸、フマール酸やクロトン酸等のカルボキシル基含有モノマー；無水マレイン酸や無水イタコン酸等の酸無水物モノマー；（メタ）アクリル酸２−ヒドロキシエチルや（メタ）アクリル酸２−ヒドロキシプロピル、（メタ）アクリル酸４−ヒドロキシブチルや（メタ）アクリル酸６−ヒドロキシヘキシル、（メタ）アクリル酸８−ヒドロキシオクチル、（メタ）アクリル酸１０−ヒドロキシデシル、（メタ）アクリル酸１２−ヒドロキシラウリル、［４−（ヒドロキシメチル）シクロヘキシル］メチル＝アクリレート、（メタ）アクリル酸Ｎ−ヒドロキシメチルアミド等のヒドロキシル基含有モノマー；スチレンスルホン酸、アリルスルホン酸、２−（メタ）アクリルアミド−２−メチルプロパンスルホン酸、（メタ）アクリルアミドプロパンスルホン酸、スルホプロピル（メタ）アクリレート、（メタ）アクリロイルオキシナフタレンスルホン酸等のスルホン酸基含有モノマー；２−ヒドロキシエチルアクリロイルホスフェート等のリン酸基含有モノマー；ジメチルアミノエチルメタクリレート、t −ブチルアミノエチルメタクリレート等のアミノ基含有モノマー；（メタ）アクリル酸グリシジルエステル等のエポキシ基含有モノマー；その他（メタ）アクリルアミド、酢酸ビニル、スチレン、アクリロニトリル等；が挙げられる。上記メタクリル酸メチルと共重合する上記（メタ）アクリル酸アルキルエステルや共重合性モノマーの使用量は、全モノマー成分の５０重量％以下が好ましい。 Examples of the copolymerizable monomer include (meth) acrylic acid, carboxyethyl acrylate, carboxypentyl acrylate, carboxyl group-containing monomers such as itaconic acid, maleic acid, fumaric acid, and crotonic acid; maleic anhydride, itaconic anhydride, and the like. Acid anhydride monomers: 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, (meth) acrylic 8-hydroxyoctyl acid, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate, [4- (hydroxymethyl) cyclohexyl] methyl acrylate, (meth) acrylic acid N-hydroxymethylamide, etc. The hydroxyl Containing monomers: styrene sulfonic acid, allyl sulfonic acid, 2- (meth) acrylamide-2-methylpropane sulfonic acid, (meth) acrylamide propane sulfonic acid, sulfopropyl (meth) acrylate, (meth) acryloyloxynaphthalene sulfonic acid, etc. Sulfonic acid group-containing monomer; Phosphoric acid group-containing monomer such as 2-hydroxyethyl acryloyl phosphate; Amino group-containing monomer such as dimethylaminoethyl methacrylate and t-butylaminoethyl methacrylate; Epoxy group containing such as (meth) acrylic acid glycidyl ester Monomer; and other (meth) acrylamide, vinyl acetate, styrene, acrylonitrile and the like. The amount of the (meth) acrylic acid alkyl ester or copolymerizable monomer copolymerized with the methyl methacrylate is preferably 50% by weight or less of the total monomer components.
さらに、プライマー層の形成材料として用いるアクリル系樹脂は、上記共重合性モノマーとしてカルボキシル基含有モノマー、酸無水物モノマーを用いた場合には、ブチルグリシジルエーテル、フェニルグリシジルエーテル、ノニルフェニルグリシジルエーテル等のエポキシ化合物により変性したものや、モノメチルアミン、ジメチルアミン、モノエチルアミン、ジエチルアミン等の一級または二級アミンによりアミド化したものを用いることもできる。さらには、エチレンイミン等をグラフト化させポリエチレンイミンのグラフト化物とすることもできる。 Furthermore, the acrylic resin used as the material for forming the primer layer is a butyl glycidyl ether, phenyl glycidyl ether, nonyl phenyl glycidyl ether or the like when a carboxyl group-containing monomer or acid anhydride monomer is used as the copolymerizable monomer. Those modified with an epoxy compound and those amidated with a primary or secondary amine such as monomethylamine, dimethylamine, monoethylamine, and diethylamine can also be used. Furthermore, a grafted product of polyethyleneimine can be obtained by grafting ethyleneimine or the like.
プライマー層は、上記プラスチック基材上に、上記例示したプライマー層の形成材料からなるフィルムを圧着する方法、形成材料の溶融物を塗布して冷却する方法、または形成材料の溶液を塗布し乾燥する方法、によって、形成することができる。塗布方法は、適宜に選択できるが厚み精度を０．５μｍ〜１０μｍに調整するためグラビアコーティング、リバースロールコーティング、スプレイコーティング等が好ましく用いられる。 The primer layer is formed by pressing a film made of the above-described primer layer forming material onto the plastic substrate, applying a cooling solution of the forming material, or applying a solution of the forming material and drying it. It can be formed by a method. The coating method can be selected as appropriate, but gravure coating, reverse roll coating, spray coating, etc. are preferably used in order to adjust the thickness accuracy to 0.5 μm to 10 μm.
着色剤としては、従来公知の顔料または染料を用いることができる。顔料としては、炭酸亜鉛、酸化亜鉛、硫化亜鉛、タルク、カオリン、炭酸カルシウム、酸化チタン、シリカ、フッ化リチウム、フッ化カルシウム、硫酸バリウム、アルミナ、ジルコニア、酸化鉄系、水酸化鉄系、酸化クロム系、スピネル型焼成系、クロム酸系、クロムバーミリオン系、紺青系、アルミニウム粉末系、ブロンズ粉末系、リン酸カルシウム等の無機顔料や、フタロシアニン系、アゾ系、縮合アゾ系、アゾレーキ系、アントラキノン系、ペリレン・ペリノン系、インジゴ・チオインジゴ系、イソインドリノン系、アゾメチン系、ジオキサジン系、キナクリドン系、アニリンブラック系、トリフェニルメタン系、カーボンブラック系等の有機顔料が挙げられる。 A conventionally known pigment or dye can be used as the colorant. As pigments, zinc carbonate, zinc oxide, zinc sulfide, talc, kaolin, calcium carbonate, titanium oxide, silica, lithium fluoride, calcium fluoride, barium sulfate, alumina, zirconia, iron oxide, iron hydroxide, oxidation Inorganic pigments such as chrome, spinel type, chromic acid, chrome vermilion, bitumen, aluminum powder, bronze powder, calcium phosphate, phthalocyanine, azo, condensed azo, azo lake, anthraquinone Organic pigments such as perylene / perinone, indigo / thioindigo, isoindolinone, azomethine, dioxazine, quinacridone, aniline black, triphenylmethane, and carbon black.
染料としては、例えば、アゾ系染料、アントラキノン、キノンフタロン、スチリル、ジフェニルメタン、トリフェニルメタン、オキサジン、トリアジン、キサンタン、メタン、アゾメチン、アクリジン、ジアジンが挙げられる。 Examples of the dye include azo dyes, anthraquinone, quinone phthalone, styryl, diphenylmethane, triphenylmethane, oxazine, triazine, xanthan, methane, azomethine, acridine, and diazine.
プライマー層における着色剤の含有量は、特には限定されず、例えば、０．０１〜６０重量％とすることができ、好ましくは１〜５０重量％であり、より好ましくは１０〜４０重量％である。 Content of the coloring agent in a primer layer is not specifically limited, For example, it can be set as 0.01-60 weight%, Preferably it is 1-50 weight%, More preferably, it is 10-40 weight% is there.
（着色層）
上記着色層としては、例えば、黒色、灰色、白色、赤色、青色、黄色、緑色、黄緑色、橙色、紫色、金色、銀色等の各色を示す層が挙げられるが、遮光性の観点から黒色が好ましい。
(Colored layer)
Examples of the colored layer include black, gray, white, red, blue, yellow, green, yellow-green, orange, purple, gold, and silver. preferable.
上記着色層は、インク組成物により形成し得る。上記インク組成物は、黒色等の各色を呈する色材（着色剤）を必須の成分とし、必要に応じてバインダー、分散剤や溶剤等を含んで構成される。上記インク組成物を支持体上に塗工、必要に応じて、乾燥、硬化させることにより着色層を形成することができる。 The colored layer can be formed from an ink composition. The ink composition includes a color material (colorant) exhibiting each color such as black as an essential component, and includes a binder, a dispersant, a solvent, and the like as necessary. A colored layer can be formed by coating the ink composition on a support and, if necessary, drying and curing.
上記色材としては、顔料、染料等のいずれの色材（着色剤）であってもよいが、顔料を好適に用いることができる。具体的には、例えば、黒系色材としては、カーボンブラック（ファーネスブラック、チャンネルブラック、アセチレンブラック、サーマルブラック、ランプブラック、松煙等）、グラファイト（黒鉛）、酸化銅、二酸化マンガン、アニリンブラック、ペリレンブラック、チタンブラック、シアニンブラック、活性炭、フェライト（非磁性フェライト、磁性フェライト等）、マグネタイト、酸化クロム、酸化鉄、二硫化モリブデン、クロム錯体、複合酸化物系黒色色素、アントラキノン系有機黒色色素等が挙げられる。なかでも、コスト、入手性の観点から、カーボンブラックが好ましい。黒系色材は単独でまたは２種以上を組み合わせて用いることができる。 The color material may be any color material (colorant) such as a pigment or a dye, but a pigment can be preferably used. Specifically, for example, black color materials include carbon black (furnace black, channel black, acetylene black, thermal black, lamp black, pine smoke, etc.), graphite (graphite), copper oxide, manganese dioxide, aniline black. , Perylene black, titanium black, cyanine black, activated carbon, ferrite (nonmagnetic ferrite, magnetic ferrite, etc.), magnetite, chromium oxide, iron oxide, molybdenum disulfide, chromium complex, complex oxide black pigment, anthraquinone organic black pigment Etc. Among these, carbon black is preferable from the viewpoint of cost and availability. Black color materials can be used alone or in combination of two or more.
上記黒色を呈する色材としては、黒系色材の他、黒系色材、シアン系色材（青緑系色材）、マゼンダ系色材（赤紫系色材）およびイエロー系色材（黄系色材）から選ばれた複数の色材が混合された色材混合物を用いることもできる。 In addition to black color materials, black color materials, black color materials, cyan color materials (blue-green color materials), magenta color materials (red-purple color materials), and yellow color materials (black color materials) It is also possible to use a color material mixture in which a plurality of color materials selected from yellow color materials are mixed.
黒以外の他の色の着色層についても同様に形成することができる。 It can form similarly about the colored layer of colors other than black.
上記着色層の形成方法としては、公知慣用のコーティング方法や、各種印刷法（グラビア印刷法、フレキソ印刷法、オフセット印刷法、凸版印刷法、スクリーン印刷法等）を利用した方法等が挙げられる。 Examples of the method for forming the colored layer include known and commonly used coating methods and methods using various printing methods (gravure printing method, flexographic printing method, offset printing method, letterpress printing method, screen printing method, etc.).
上記インク組成物における色材の総含有量は、インク組成物の固形分（色材およびバインダー等の不揮発成分）に対して、２０〜６０重量％が好ましく、より好ましくは３０〜５０重量％である。色材の含有量が２０重量％未満では、厚さに対する遮光性が低く着色層（例えば遮光性印刷層）を薄膜化することが困難となる場合がある。また、含有量が６０重量％を超えると、色材の定着性が低下する場合がある。 The total content of the color material in the ink composition is preferably 20 to 60% by weight, more preferably 30 to 50% by weight, based on the solid content of the ink composition (non-volatile components such as the color material and the binder). is there. When the content of the color material is less than 20% by weight, the light shielding property with respect to the thickness is low, and it may be difficult to make a colored layer (for example, a light shielding printing layer) thin. On the other hand, when the content exceeds 60% by weight, the fixing property of the coloring material may be lowered.
着色層は、単層、多層のいずれの形態を有していてもよいが、多層の形態を有していることが好ましい。したがって、ここに開示される粘着シート（例えば両面粘着テープ）は、着色層として多層構造の遮光性印刷層を有していることが好ましい。このように、遮光性印刷層を多層構造とすることにより、より一層遮光性を高めることができ、加えてピンホール低減の効果も得られる。なお、着色層（例えば遮光性印刷層）の層数は、１層あたりの層厚さや遮光性の度合いによって異なり得るため特に限定されず、例えば１〜５程度であり、好ましくは２〜５、さらに好ましくは３〜５（特に３または５）である。 The colored layer may have either a single layer or a multilayer, but preferably has a multilayer. Therefore, the pressure-sensitive adhesive sheet disclosed herein (for example, a double-sided pressure-sensitive adhesive tape) preferably has a multilayered light-shielding printing layer as a colored layer. Thus, by making the light-shielding print layer have a multilayer structure, the light-shielding property can be further enhanced, and in addition, the effect of reducing pinholes can be obtained. The number of the colored layers (for example, the light-shielding print layer) is not particularly limited because it may vary depending on the layer thickness per one layer and the degree of the light-shielding property, and is, for example, about 1 to 5, preferably 2 to 5, More preferably, it is 3-5 (especially 3 or 5).
上記着色層の総厚さ（多層構造の場合は着色層全体の厚さ）は、特に限定されず、遮光性と薄膜化の両立の観点から、１〜７μｍが好ましく、より好ましくは１〜６μｍ、さらに好ましくは１〜５μｍである。 The total thickness of the colored layer (in the case of a multilayer structure, the total thickness of the colored layer) is not particularly limited, and is preferably 1 to 7 μm, more preferably 1 to 6 μm from the viewpoint of achieving both light shielding properties and thinning. More preferably, it is 1-5 micrometers.
（II）粘着剤層
上記粘着剤層を形成するための粘着剤としては、特に制限されず、例えば、ウレタン系粘着剤、アクリル系粘着剤、ゴム系粘着剤、シリコーン系粘着剤、ポリエステル系粘着剤、ポリアミド系粘着剤、エポキシ系粘着剤、ビニルアルキルエーテル系粘着剤、フッ素系粘着剤等の公知の粘着剤が挙げられる。粘着剤は、単独でまたは２種以上を組み合わせて用いることができる。なお、粘着剤は、いずれの形態を有していてもよい。粘着剤は、例えば、エマルション型粘着剤、溶剤型粘着剤、熱溶融型粘着剤（ホットメルト型粘着剤）等であり得る。
(II) Pressure-sensitive adhesive layer The pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer is not particularly limited. For example, a urethane-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, and a polyester-based pressure-sensitive adhesive. And known adhesives such as adhesives, polyamide adhesives, epoxy adhesives, vinyl alkyl ether adhesives, and fluorine adhesives. An adhesive can be used individually or in combination of 2 or more types. The pressure-sensitive adhesive may have any form. The pressure-sensitive adhesive can be, for example, an emulsion-type pressure-sensitive adhesive, a solvent-type pressure-sensitive adhesive, a hot-melt-type pressure-sensitive adhesive (hot-melt type pressure-sensitive adhesive), and the like.
粘着剤としては、アクリル系粘着剤、ゴム系粘着剤を好適に用いることができる。アクリル系粘着剤は、ベースポリマーとしてアクリル系重合体を含む（典型的には主成分として含む）。アクリル系重合体としては、特に制限されないが、主構成単量体成分（モノマー主成分）として、直鎖または分岐鎖状のアルキル基を有する（メタ）アクリル酸アルキルエステル（アクリル酸アルキルエステル、メタクリル酸アルキルエステル）が用いられていることが好ましい。具体的には、（メタ）アクリル酸アルキルエステルとしては、例えば、（メタ）アクリル酸メチル、（メタ）アクリル酸エチル、（メタ）アクリル酸プロピル、（メタ）アクリル酸イソプロピル、（メタ）アクリル酸ブチル、（メタ）アクリル酸イソブチル、（メタ）アクリル酸ｓ−ブチル、（メタ）アクリル酸ｔ−ブチル、（メタ）アクリル酸ペンチル、（メタ）アクリル酸イソアミル、（メタ）アクリル酸ネオペンチル、（メタ）アクリル酸ヘキシル、（メタ）アクリル酸ヘプチル、（メタ）アクリル酸２−エチルヘキシル、（メタ）アクリル酸オクチル、（メタ）アクリル酸イソオクチル、（メタ）アクリル酸ノニル、（メタ）アクリル酸イソノニル、（メタ）アクリル酸デシル、（メタ）アクリル酸イソデシル、（メタ）アクリル酸ウンデシル、（メタ）アクリル酸ドデシル等が挙げられる。（メタ）アクリル酸アルキルエステルは、単独でまたは２種以上組み合わせて用いることができる。 As the pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be suitably used. The acrylic pressure-sensitive adhesive contains an acrylic polymer as a base polymer (typically as a main component). The acrylic polymer is not particularly limited, but as a main constituent monomer component (monomer main component), a (meth) acrylic acid alkyl ester having a linear or branched alkyl group (acrylic acid alkyl ester, methacrylic acid). Acid alkyl ester) is preferably used. Specifically, as the (meth) acrylic acid alkyl ester, for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, (meth) acrylic acid Butyl, isobutyl (meth) acrylate, s-butyl (meth) acrylate, t-butyl (meth) acrylate, pentyl (meth) acrylate, isoamyl (meth) acrylate, neopentyl (meth) acrylate, (meta ) Hexyl acrylate, heptyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, isooctyl (meth) acrylate, nonyl (meth) acrylate, isononyl (meth) acrylate, ( (Meth) acrylic acid decyl, (meth) acrylic acid isodecyl, (meth) acrylic acid Ndeshiru include dodecyl (meth) acrylate. The (meth) acrylic acid alkyl ester can be used alone or in combination of two or more.
アクリル系重合体を構成するモノマー成分としては、（メタ）アクリル酸アルキルエステルをモノマー主成分としていれば、（メタ）アクリル酸アルキルエステルと共重合が可能な他のモノマー成分（「共重合性モノマー成分」と称する場合がある）が用いられていてもよい。なお、（メタ）アクリル酸アルキルエステルは、アクリル系重合体を構成するモノマー成分全量に対して５０重量％以上の割合で用いることが好ましい。 As the monomer component constituting the acrylic polymer, other monomer components that can be copolymerized with (meth) acrylic acid alkyl ester (“copolymerizable monomer”) can be used as long as (meth) acrylic acid alkyl ester is the main monomer component. May be referred to as “components”). In addition, it is preferable to use (meth) acrylic-acid alkylester in the ratio of 50 weight% or more with respect to the monomer component whole quantity which comprises an acrylic polymer.
共重合性モノマー成分は、アクリル系重合体に架橋点を導入させるためや、アクリル系重合体の凝集力を高めるために用いることができる。共重合性モノマー成分は単独でまたは２種以上組み合わせて用いることができる。 The copolymerizable monomer component can be used for introducing a crosslinking point into the acrylic polymer or for increasing the cohesive force of the acrylic polymer. The copolymerizable monomer components can be used alone or in combination of two or more.
具体的には、共重合性モノマー成分としては、アクリル系重合体に架橋点を導入させるために、官能基含有モノマー成分（特に、アクリル系重合体に熱架橋する架橋点を導入させるための熱架橋性官能基含有モノマー成分）を用いることができる。このような官能基含有モノマー成分としては、（メタ）アクリル酸アルキルエステルと共重合が可能であり、かつ架橋点となる官能基を有しているモノマー成分であれば特に制限されない。例えば、（メタ）アクリル酸、イタコン酸、クロトン酸、マレイン酸、フマル酸、イソクロトン酸等のカルボキシル基含有モノマーおよびその酸無水物（無水マレイン酸、無水イコタン酸等）；（メタ）アクリル酸２−ヒドロキシエチル、（メタ）アクリル酸２−ヒドロキシプロピル、（メタ）アクリル酸２−ヒドロキシブチル等の（メタ）アクリル酸ヒドロキシアルキルの他、ビニルアルコール、アリルアルコール等の水酸基含有モノマー；（メタ）アクリルアミド、Ｎ，Ｎ−ジメチル（メタ）アクリルアミド、Ｎ−ブチル（メタ）アクリルアミド、Ｎ−メチロール（メタ）アクリルアミド、Ｎ−メチロールプロパン（メタ）アクリルアミド、Ｎ−メトキシメチル（メタ）アクリルアミド、Ｎ−ブトキシメチル（メタ）アクリルアミド等のアミド系モノマー；（メタ）アクリル酸アミノエチル、（メタ）アクリル酸Ｎ，Ｎ−ジメチルアミノエチル、（メタ）アクリル酸ｔ−ブチルアミノエチル等のアミノ基含有モノマー；（メタ）アクリル酸グリシジル、（メタ）アクリル酸メチルグリシジル等のエポキシ基含有モノマー；アクリロニトリル、メタクリロニトリル等のシアノ含有モノマー；Ｎ−ビニル−２−ピロリドン、Ｎ−メチルビニルピロリドン、Ｎ−ビニルピリジン、Ｎ−ビニルピペリドン、Ｎ−ビニルピリミジン、Ｎ−ビニルピペラジン、Ｎ−ビニルピラジン、Ｎ−ビニルピロール、Ｎ−ビニルイミダゾール、Ｎ−ビニルオキサゾール、Ｎ−ビニルモルホリン、Ｎ−ビニルカプロラクタム、Ｎ−（メタ）アクリロイルモルホリン等の窒素原子含有環を有するモノマー；等が挙げられる。官能基含有モノマー成分としては、アクリル酸等のカルボキシル基含有モノマーまたはその酸無水物を好適に用いることができる。 Specifically, as the copolymerizable monomer component, a functional group-containing monomer component (particularly, heat for introducing a crosslinking point that is thermally crosslinked to the acrylic polymer) is introduced in order to introduce a crosslinking point into the acrylic polymer. Crosslinkable functional group-containing monomer component) can be used. Such a functional group-containing monomer component is not particularly limited as long as it is a monomer component that can be copolymerized with a (meth) acrylic acid alkyl ester and has a functional group serving as a crosslinking point. For example, (meth) acrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, isocrotonic acid and other carboxyl group-containing monomers and acid anhydrides thereof (maleic anhydride, itaconic anhydride, etc.); (meth) acrylic acid 2 -Hydroxyethyl, hydroxyalkyl (meth) acrylates such as 2-hydroxypropyl (meth) acrylate and 2-hydroxybutyl (meth) acrylate, as well as hydroxyl-containing monomers such as vinyl alcohol and allyl alcohol; (meth) acrylamide N, N-dimethyl (meth) acrylamide, N-butyl (meth) acrylamide, N-methylol (meth) acrylamide, N-methylolpropane (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-butoxymethyl ( Such as (meth) acrylamide Mido monomers; amino group-containing monomers such as aminoethyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, and t-butylaminoethyl (meth) acrylate; glycidyl (meth) acrylate, ( Epoxy group-containing monomers such as methyl glycidyl acrylate; Cyano-containing monomers such as acrylonitrile and methacrylonitrile; N-vinyl-2-pyrrolidone, N-methylvinylpyrrolidone, N-vinylpyridine, N-vinylpiperidone, N-vinyl Nitrogen atom-containing rings such as pyrimidine, N-vinylpiperazine, N-vinylpyrazine, N-vinylpyrrole, N-vinylimidazole, N-vinyloxazole, N-vinylmorpholine, N-vinylcaprolactam, N- (meth) acryloylmorpholine A monomer having And the like. As the functional group-containing monomer component, a carboxyl group-containing monomer such as acrylic acid or an acid anhydride thereof can be suitably used.
また、共重合性モノマー成分としては、アクリル系重合体の凝集力を高めるために、他の共重合性モノマー成分を用いることができる。他の共重合性モノマー成分としては、例えば、酢酸ビニル、プロピオン酸ビニル等のビニルエステル系モノマー；スチレン、置換スチレン（α−メチルスチレン等）、ビニルトルエン等のスチレン系モノマー；（メタ）アクリル酸シクロアルキルエステル［（メタ）アクリル酸シクロヘキシル、シクロペンチルジ（メタ）アクリレート等］や、（メタ）アクリル酸ボルニル、（メタ）アクリル酸イソボルニル等の非芳香族性環含有（メタ）アクリル酸エステル；（メタ）アクリル酸アリールエステル［（メタ）アクリル酸フェニル等］、（メタ）アクリル酸アリールオキシアルキルエステル［（メタ）アクリル酸フェノキシエチル等］や、（メタ）アクリル酸アリールアルキルエステル［（メタ）アクリル酸ベンジルエステル］等の芳香族性環含有（メタ）アクリル酸エステル；エチレン、プロピレン、イソプレン、ブタジエン、イソブチレン等のオレフィン系モノマー；塩化ビニル、塩化ビニリデン；２−（メタ）アクリロイルオキシエチルイソシアネート等のイソシアネート基含有モノマー；（メタ）アクリル酸メトキシエチル、（メタ）アクリル酸エトキシエチル等のアルコキシ基含有モノマー；メチルビニルエーテル、エチルビニルエーテル等のビニルエーテル系モノマー；１，６−ヘキサンジオールジ（メタ）アクリレート、エチレングリコールジ（メタ）アクリレート、ジエチレングリコールジ（メタ）アクリレート、トリエチレングリコールジ（メタ）アクリレート、テトラエチレングリコールジ（メタ）アクリレート、（ポリ）エチレングリコールジ（メタ）アクリレート、プロピレングリコールジ（メタ）アクリレート、（ポリ）プロピレングリコールジ（メタ）アクリレート、ネオペンチルグリコールジ（メタ）アクリレート、ペンタエリスリトールジ（メタ）アクリレート、トリメチロールプロパントリ（メタ）アクリレート、ペンタエリスリトールトリ（メタ）アクリレート、ジペンタエリスリトールヘキサ（メタ）アクリレート、グリセリンジ（メタ）アクリレート、エポキシアクリレート、ポリエステルアクリレート、ウレタンアクリレート、ジビニルベンゼン、ブチルジ（メタ）アクリレート、ヘキシルジ（メタ）アクリレート等の多官能モノマー；等が挙げられる。 Further, as the copolymerizable monomer component, other copolymerizable monomer components can be used in order to increase the cohesive strength of the acrylic polymer. Other copolymerizable monomer components include, for example, vinyl ester monomers such as vinyl acetate and vinyl propionate; styrene monomers such as styrene, substituted styrene (α-methylstyrene, etc.) and vinyltoluene; (meth) acrylic acid Non-aromatic ring-containing (meth) acrylate esters such as cycloalkyl esters [cyclohexyl (meth) acrylate, cyclopentyl di (meth) acrylate, etc.], bornyl (meth) acrylate, isobornyl (meth) acrylate; (Meth) acrylic acid aryl ester [(meth) acrylic acid phenyl etc.], (meth) acrylic acid aryloxyalkyl ester [(meth) acrylic acid phenoxyethyl etc.], (meth) acrylic acid aryl alkyl ester [(meth) acrylic Aromaticity such as acid benzyl ester] Containing (meth) acrylic acid ester; Olefin monomer such as ethylene, propylene, isoprene, butadiene, isobutylene; Vinyl chloride, vinylidene chloride; Isocyanate group-containing monomer such as 2- (meth) acryloyloxyethyl isocyanate; (Meth) acrylic acid Alkoxy group-containing monomers such as methoxyethyl and ethoxyethyl (meth) acrylate; vinyl ether monomers such as methyl vinyl ether and ethyl vinyl ether; 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, diethylene glycol di (Meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, (poly) ethylene glycol di (meth) acrylate Rate, propylene glycol di (meth) acrylate, (poly) propylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, pentaerythritol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri Polyfunctional monomers such as (meth) acrylate, dipentaerythritol hexa (meth) acrylate, glycerin di (meth) acrylate, epoxy acrylate, polyester acrylate, urethane acrylate, divinylbenzene, butyl di (meth) acrylate, hexyl di (meth) acrylate; Etc.
ゴム系粘着剤としては、天然ゴム、スチレン−イソプレン−スチレンブロック共重合体（ＳＩＳブロック共重合体）、スチレン−ブタジエン−スチレンブロック共重合体（ＳＢＳブロック共重合体）、スチレン−エチレン・ブチレン−スチレンブロック共重合体（ＳＥＢＳブロック共重合体）、スチレン−ブタジエンゴム、ポリブタジエン、ポリイソプレン、ポリイソブチレン、ブチルゴム、クロロプレンゴム、シリコーンゴム、アクリロニトリル−ブタジエンゴム、エチレン−プロピレンターポリマー等のゴム成分をベースポリマーとするゴム系粘着剤等が挙げられる。 Rubber adhesives include natural rubber, styrene-isoprene-styrene block copolymer (SIS block copolymer), styrene-butadiene-styrene block copolymer (SBS block copolymer), styrene-ethylene / butylene- Based on rubber components such as styrene block copolymer (SEBS block copolymer), styrene-butadiene rubber, polybutadiene, polyisoprene, polyisobutylene, butyl rubber, chloroprene rubber, silicone rubber, acrylonitrile-butadiene rubber, ethylene-propylene terpolymer Examples thereof include a rubber-based pressure-sensitive adhesive as a polymer.
なお、粘着剤中には、必要に応じて、例えば、架橋剤、交叉結合剤、粘着付与樹脂、充填剤、難燃剤、老化防止剤、帯電防止剤、軟化剤、紫外線吸収剤、酸化防止剤、可塑剤、界面活性剤等の公知の添加剤等が含まれていてもよい。 In the pressure-sensitive adhesive, if necessary, for example, a crosslinking agent, a cross-linking agent, a tackifier resin, a filler, a flame retardant, an anti-aging agent, an antistatic agent, a softening agent, an ultraviolet absorber, an antioxidant. Further, known additives such as a plasticizer and a surfactant may be contained.
粘着剤層は、単層、多層のいずれの形態を有していてもよい。 The pressure-sensitive adhesive layer may have any form of a single layer or a multilayer.
粘着剤層（両面粘着シートの場合、片面側）の厚さとしては、特に限定されず、粘着シート（例えば両面粘着テープ）の薄膜化の観点等から、例えば１〜２００μｍが好ましく、より好ましくは３〜１００μｍである。 The thickness of the pressure-sensitive adhesive layer (one side in the case of a double-sided pressure-sensitive adhesive sheet) is not particularly limited, and is preferably 1 to 200 μm, more preferably from the viewpoint of thinning the pressure-sensitive adhesive sheet (for example, double-sided pressure-sensitive adhesive tape). 3 to 100 μm.
粘着剤層の形成方法は、特に制限されず、例えば、所定の面上に粘着剤を塗布し、必要に応じて乾燥、硬化させる方法や、セパレータ（剥離ライナー）上に粘着剤を塗布し、必要に応じて乾燥、硬化させて粘着剤層を形成した後、該粘着剤層を所定の面上に貼り合わせて転写させる方法等が挙げられる。なお、粘着剤の塗布に際しては、慣用の塗工機（例えば、グラビヤロールコーター、リバースロールコーター、キスロールコーター、ディップロールコーター、バーコーター、ナイフコーター、スプレーコーター等）を用いることができる。 The method for forming the pressure-sensitive adhesive layer is not particularly limited, for example, a method of applying a pressure-sensitive adhesive on a predetermined surface and drying and curing as necessary, or a method of applying a pressure-sensitive adhesive on a separator (release liner), Examples of the method include a method of forming a pressure-sensitive adhesive layer by drying and curing as necessary, and then transferring the pressure-sensitive adhesive layer on a predetermined surface. In applying the pressure-sensitive adhesive, a conventional coating machine (for example, gravure roll coater, reverse roll coater, kiss roll coater, dip roll coater, bar coater, knife coater, spray coater, etc.) can be used.
好ましい一実施形態では、上記粘着剤層は、（メタ）アクリル酸アルキルエステルを５０〜９９重量％と、カルボキシル基含有モノマー１〜１０重量％とをモノマー成分として含むアクリル系重合体を８０〜１００重量％含有するアクリル系粘着剤（Ａ）から形成される。より好ましい実施形態では、当該アクリル系粘着剤（Ａ）は、アクリル系重合体１００重量部に対して、イソシアネート系架橋剤やエポキシ系架橋剤等の架橋剤を０．０１〜５重量部含む。 In a preferred embodiment, the pressure-sensitive adhesive layer comprises an acrylic polymer containing 50 to 99% by weight of (meth) acrylic acid alkyl ester and 1 to 10% by weight of a carboxyl group-containing monomer as monomer components. It is formed from an acrylic pressure-sensitive adhesive (A) containing by weight%. In more preferable embodiment, the said acrylic adhesive (A) contains 0.01-5 weight part of crosslinking agents, such as an isocyanate type crosslinking agent and an epoxy-type crosslinking agent, with respect to 100 weight part of acrylic polymers.
（III)粘着シート
図１は、本実施の形態に係る粘着シートの一例の概略構成を模式的に示す断面図である。図１に示すように、本実施の形態に係る粘着シート１０は、基材５と粘着剤層３とを備え、基材５は、プラスチック基材４と、プライマー層２と、着色層１とこの順に積層した積層基材である。
(III) Adhesive Sheet FIG. 1 is a cross-sectional view schematically showing a schematic configuration of an example of an adhesive sheet according to the present embodiment. As shown in FIG. 1, the pressure-sensitive adhesive sheet 10 according to the present embodiment includes a base material 5 and a pressure-sensitive adhesive layer 3, and the base material 5 includes a plastic base material 4, a primer layer 2, and a colored layer 1. It is a laminated substrate laminated in this order.
なお、図１に示す実施形態では、基材５の両面に粘着剤層３を備えた構成であるが、基材５の片面のみに粘着剤層３を備えた構成であってもよい。また、基材５と粘着剤層３との間に下塗り層等の他の層を備えていてもよい。 In addition, in embodiment shown in FIG. 1, although it is the structure provided with the adhesive layer 3 on both surfaces of the base material 5, the structure provided with the adhesive layer 3 only on the single side | surface of the base material 5 may be sufficient. Further, another layer such as an undercoat layer may be provided between the substrate 5 and the pressure-sensitive adhesive layer 3.
以下に、実施例および比較例を挙げて本発明をより具体的に説明する。ただし、本発明は、以下の実施例および比較例に何ら制限されるものではない。なお、以下の説明において、「部」および「％」は、特に明記のない限り、重量基準である。 Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to the following examples and comparative examples. In the following description, “parts” and “%” are based on weight unless otherwise specified.
〔実施例１〕
（アクリル系粘着剤）
温度計、攪拌機、窒素導入管および環流冷却管を備えた反応器に、アクリル酸ｎ−ブチル７０重量部、アクリル酸２−エチルヘキシル２７重量部、アクリル酸３重量部、アゾビスイソブチロニトリル０．２重量部および重合溶媒として酢酸エチル２３５重量部を投入し、窒素ガスを導入しながら１時間攪拌した。このように、重合系内の酸素を除去した後、６３℃に昇温し、１０時間反応させた。その後、室温まで冷却し、固形分濃度３０重量％のアクリル系ポリマー溶液を得た。このアクリル系ポリマー溶液１００重量部（固形分換算）に４官能エポキシ系架橋剤（三菱ガス化学社製「テトラッドＣ」）０．０５重量部を加え、透明なアクリル系粘着剤を調製した。
[Example 1]
(Acrylic adhesive)
In a reactor equipped with a thermometer, a stirrer, a nitrogen introduction tube and a reflux condenser, 70 parts by weight of n-butyl acrylate, 27 parts by weight of 2-ethylhexyl acrylate, 3 parts by weight of acrylic acid, azobisisobutyronitrile 0 .2 parts by weight and 235 parts by weight of ethyl acetate as a polymerization solvent were added and stirred for 1 hour while introducing nitrogen gas. Thus, after removing the oxygen in the polymerization system, the temperature was raised to 63 ° C. and the reaction was carried out for 10 hours. Then, it cooled to room temperature and obtained the acrylic polymer solution with a solid content concentration of 30 weight%. To 100 parts by weight (in terms of solid content) of this acrylic polymer solution, 0.05 part by weight of a tetrafunctional epoxy crosslinking agent (“Tetrad C” manufactured by Mitsubishi Gas Chemical Co., Ltd.) was added to prepare a transparent acrylic pressure-sensitive adhesive.
（両面粘着テープ）
透明ポリエチレンテレフタレート（ＰＥＴ）フィルム（東レ社製「ルミラー」）（厚さ：４．５μｍ）の一方の面に、着色プライマー組成物（黒色インク（大日精化工業社製「ＮＢ−３００墨」）とウレタン系樹脂とを３０：７０の混合比で混合したもの)をグラビア印刷法により塗布してプライマー層を形成した。
(Double-sided adhesive tape)
On one surface of a transparent polyethylene terephthalate (PET) film (“Lumirror” manufactured by Toray Industries, Inc.) (thickness: 4.5 μm), a colored primer composition (black ink (“NB-300 Black” manufactured by Dainichi Seika Kogyo Co., Ltd.)) And a urethane resin mixed at a mixing ratio of 30:70) were applied by a gravure printing method to form a primer layer.
上記プライマー層の上に、黒色インク（大日精化工業社製「ＮＢ−３００墨」）を、グラビア印刷法により５回重ね塗りして、総厚さ５μｍの黒色印刷層（５層）を着色層として形成し、透明ＰＥＴ基材／プライマー層／黒色印刷層（５層）の積層構成の積層体（厚さ：１０μｍ）を得た。 On the primer layer, black ink ("NB-300 black" manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied five times by gravure printing to color a black printed layer (5 layers) with a total thickness of 5 μm. It formed as a layer and the laminated body (thickness: 10 micrometers) of the laminated structure of transparent PET base material / primer layer / black printing layer (5 layers) was obtained.
この積層体の両面に上記アクリル系粘着剤を粘着剤層の厚さが１０μｍとなるように塗布し、厚さ３０μｍの両面粘着テープを得た。 The acrylic pressure-sensitive adhesive was applied to both sides of the laminate so that the thickness of the pressure-sensitive adhesive layer was 10 μm, and a double-sided pressure-sensitive adhesive tape having a thickness of 30 μm was obtained.
〔比較例１〕
プライマーに顔料を添加していないこと以外は実施例１と同様の操作を行い、両面粘着テープを得た。
[Comparative Example 1]
A double-sided pressure-sensitive adhesive tape was obtained in the same manner as in Example 1 except that no pigment was added to the primer.
（光漏れ評価）
実施例１、比較例１で得た両面粘着テープについて、下記のように評価を行った。
評価方法：暗室でＬＥＤランプ（２０Ｗ）を高さ２０ｃｍの筒（直径７５ｍｍ）の下部にセットし、筒上部に得られた両面粘着テープを置く。ＬＥＤランプを照射した際に両面粘着テープから光漏れが発生しないかどうかを目視で確認する。
(Light leakage evaluation)
The double-sided pressure-sensitive adhesive tapes obtained in Example 1 and Comparative Example 1 were evaluated as follows.
Evaluation method: An LED lamp (20 W) is set in the lower part of a 20 cm high cylinder (diameter 75 mm) in a dark room, and the obtained double-sided adhesive tape is placed on the upper part of the cylinder. It is visually confirmed whether or not light leakage occurs from the double-sided adhesive tape when the LED lamp is irradiated.
その結果、比較例１で得られたテープでは、直径約０．５ｍｍ以上の光漏れが肉眼で確認されたが、実施例１で得られたテープでは、肉眼で判断できる光漏れはなかった。 As a result, in the tape obtained in Comparative Example 1, light leakage with a diameter of about 0.5 mm or more was confirmed with the naked eye, but with the tape obtained in Example 1, there was no light leakage that could be judged with the naked eye.
本発明は前述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims, and the embodiments can be obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.
１ 着色層
２ プライマー層
３ 粘着剤層
４ プラスチック基材
５ 基材
１０ 粘着シート
DESCRIPTION OF SYMBOLS 1 Coloring layer 2 Primer layer 3 Adhesive layer 4 Plastic base material 5 Base material 10 Adhesive sheet
Claims (5)
前記基材は、プラスチック基材と、プライマー層と、着色層とをこの順に積層した積層基材であり、
前記プライマー層が着色剤を含むことを特徴とする、粘着シート。 A substrate and an adhesive layer;
The base material is a laminated base material in which a plastic base material, a primer layer, and a colored layer are laminated in this order,
The pressure-sensitive adhesive sheet, wherein the primer layer contains a colorant.
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| WO2021193316A1 (en) * | 2020-03-24 | 2021-09-30 | 日東電工株式会社 | Pressure-sensitive adhesive sheet |
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| KR20150032464A (en) | 2015-03-26 |
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