JP2008188897A - White polyester film for reflector - Google Patents
White polyester film for reflector Download PDFInfo
- Publication number
- JP2008188897A JP2008188897A JP2007026512A JP2007026512A JP2008188897A JP 2008188897 A JP2008188897 A JP 2008188897A JP 2007026512 A JP2007026512 A JP 2007026512A JP 2007026512 A JP2007026512 A JP 2007026512A JP 2008188897 A JP2008188897 A JP 2008188897A
- Authority
- JP
- Japan
- Prior art keywords
- film
- polyester
- weight
- layer
- polyester film
- 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
- 229920006267 polyester film Polymers 0.000 title claims abstract description 41
- 239000010410 layer Substances 0.000 claims abstract description 53
- 239000011247 coating layer Substances 0.000 claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 28
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 27
- 239000002216 antistatic agent Substances 0.000 claims abstract description 9
- 229920000728 polyester Polymers 0.000 claims description 42
- 239000010954 inorganic particle Substances 0.000 claims description 7
- 239000011146 organic particle Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 239000000470 constituent Substances 0.000 abstract 3
- 238000005286 illumination Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 68
- -1 for example Chemical compound 0.000 description 46
- 239000002245 particle Substances 0.000 description 36
- 239000000178 monomer Substances 0.000 description 21
- 238000000576 coating method Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 20
- 239000000203 mixture Substances 0.000 description 20
- 239000011248 coating agent Substances 0.000 description 17
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 14
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 125000000962 organic group Chemical group 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- 229920006317 cationic polymer Polymers 0.000 description 6
- 239000003431 cross linking reagent Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 125000003504 2-oxazolinyl group Chemical group O1C(=NCC1)* 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical group OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 239000007822 coupling agent Substances 0.000 description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000006081 fluorescent whitening agent Substances 0.000 description 4
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 4
- 238000009998 heat setting Methods 0.000 description 4
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Chemical group OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- 229920001634 Copolyester Polymers 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical group CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical class NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 150000002009 diols Chemical class 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 description 3
- 150000003839 salts Chemical group 0.000 description 3
- 125000005372 silanol group Chemical group 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- 238000005809 transesterification reaction Methods 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical group FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 2
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical group OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 2
- LPIQIQPLUVLISR-UHFFFAOYSA-N 2-prop-1-en-2-yl-4,5-dihydro-1,3-oxazole Chemical compound CC(=C)C1=NCCO1 LPIQIQPLUVLISR-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
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical group C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000001530 fumaric acid Chemical group 0.000 description 2
- 229940119177 germanium dioxide Drugs 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical group OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Chemical group 0.000 description 2
- 229940071125 manganese acetate Drugs 0.000 description 2
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Chemical group OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Chemical group CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 2
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- RYSXWUYLAWPLES-MTOQALJVSA-N (Z)-4-hydroxypent-3-en-2-one titanium Chemical compound [Ti].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O RYSXWUYLAWPLES-MTOQALJVSA-N 0.000 description 1
- YOBOXHGSEJBUPB-MTOQALJVSA-N (z)-4-hydroxypent-3-en-2-one;zirconium Chemical compound [Zr].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O YOBOXHGSEJBUPB-MTOQALJVSA-N 0.000 description 1
- KATAXDCYPGGJNJ-UHFFFAOYSA-N 1,3-bis(oxiran-2-ylmethoxy)propan-2-ol Chemical compound C1OC1COCC(O)COCC1CO1 KATAXDCYPGGJNJ-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- CMCBDXRRFKYBDG-UHFFFAOYSA-N 1-dodecoxydodecane Chemical compound CCCCCCCCCCCCOCCCCCCCCCCCC CMCBDXRRFKYBDG-UHFFFAOYSA-N 0.000 description 1
- DTZHXCBUWSTOPO-UHFFFAOYSA-N 1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene Chemical compound C1=C(N=C=O)C(C)=CC(CC=2C=C(C)C(N=C=O)=CC=2)=C1 DTZHXCBUWSTOPO-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
- DBXOZIGKCLFPQZ-UHFFFAOYSA-N 1-n,1-n,3-n,3-n-tetrakis(oxiran-2-ylmethyl)cyclohexane-1,3-diamine Chemical compound C1OC1CN(C1CC(CCC1)N(CC1OC1)CC1OC1)CC1CO1 DBXOZIGKCLFPQZ-UHFFFAOYSA-N 0.000 description 1
- BBBUAWSVILPJLL-UHFFFAOYSA-N 2-(2-ethylhexoxymethyl)oxirane Chemical compound CCCCC(CC)COCC1CO1 BBBUAWSVILPJLL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-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
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 description 1
- HDPLHDGYGLENEI-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COCC1CO1 HDPLHDGYGLENEI-UHFFFAOYSA-N 0.000 description 1
- WTYYGFLRBWMFRY-UHFFFAOYSA-N 2-[6-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COCCCCCCOCC1CO1 WTYYGFLRBWMFRY-UHFFFAOYSA-N 0.000 description 1
- KUAUJXBLDYVELT-UHFFFAOYSA-N 2-[[2,2-dimethyl-3-(oxiran-2-ylmethoxy)propoxy]methyl]oxirane Chemical compound C1OC1COCC(C)(C)COCC1CO1 KUAUJXBLDYVELT-UHFFFAOYSA-N 0.000 description 1
- AGXAFZNONAXBOS-UHFFFAOYSA-N 2-[[3-(oxiran-2-ylmethyl)phenyl]methyl]oxirane Chemical compound C=1C=CC(CC2OC2)=CC=1CC1CO1 AGXAFZNONAXBOS-UHFFFAOYSA-N 0.000 description 1
- IHEDBVUTTQXGSJ-UHFFFAOYSA-M 2-[bis(2-oxidoethyl)amino]ethanolate;titanium(4+);hydroxide Chemical compound [OH-].[Ti+4].[O-]CCN(CC[O-])CC[O-] IHEDBVUTTQXGSJ-UHFFFAOYSA-M 0.000 description 1
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- BQBSIHIZDSHADD-UHFFFAOYSA-N 2-ethenyl-4,5-dihydro-1,3-oxazole Chemical compound C=CC1=NCCO1 BQBSIHIZDSHADD-UHFFFAOYSA-N 0.000 description 1
- PBYIFPWEHGSUEY-UHFFFAOYSA-N 2-ethenyl-4-methyl-4,5-dihydro-1,3-oxazole Chemical compound CC1COC(C=C)=N1 PBYIFPWEHGSUEY-UHFFFAOYSA-N 0.000 description 1
- HMEVYZZCEGUONQ-UHFFFAOYSA-N 2-ethenyl-5-methyl-4,5-dihydro-1,3-oxazole Chemical compound CC1CN=C(C=C)O1 HMEVYZZCEGUONQ-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- AIFLGMNWQFPTAJ-UHFFFAOYSA-J 2-hydroxypropanoate;titanium(4+) Chemical compound [Ti+4].CC(O)C([O-])=O.CC(O)C([O-])=O.CC(O)C([O-])=O.CC(O)C([O-])=O AIFLGMNWQFPTAJ-UHFFFAOYSA-J 0.000 description 1
- VHSHLMUCYSAUQU-UHFFFAOYSA-N 2-hydroxypropyl methacrylate Chemical compound CC(O)COC(=O)C(C)=C VHSHLMUCYSAUQU-UHFFFAOYSA-N 0.000 description 1
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 description 1
- LCANECIWPMDASZ-UHFFFAOYSA-N 2-isocyanatoethanol Chemical compound OCCN=C=O LCANECIWPMDASZ-UHFFFAOYSA-N 0.000 description 1
- IJSVVICYGLOZHA-UHFFFAOYSA-N 2-methyl-n-phenylprop-2-enamide Chemical group CC(=C)C(=O)NC1=CC=CC=C1 IJSVVICYGLOZHA-UHFFFAOYSA-N 0.000 description 1
- YZTJKOLMWJNVFH-UHFFFAOYSA-N 2-sulfobenzene-1,3-dicarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1S(O)(=O)=O YZTJKOLMWJNVFH-UHFFFAOYSA-N 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- NEQFBGHQPUXOFH-UHFFFAOYSA-N 4-(4-carboxyphenyl)benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C=C1 NEQFBGHQPUXOFH-UHFFFAOYSA-N 0.000 description 1
- MBLQIMSKMPEILU-UHFFFAOYSA-N 4-methyl-2-prop-1-en-2-yl-4,5-dihydro-1,3-oxazole Chemical compound CC1COC(C(C)=C)=N1 MBLQIMSKMPEILU-UHFFFAOYSA-N 0.000 description 1
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 1
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- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
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- VNGOYPQMJFJDLV-UHFFFAOYSA-N dimethyl benzene-1,3-dicarboxylate Chemical compound COC(=O)C1=CC=CC(C(=O)OC)=C1 VNGOYPQMJFJDLV-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- GYUVMLBYMPKZAZ-UHFFFAOYSA-N dimethyl naphthalene-2,6-dicarboxylate Chemical compound C1=C(C(=O)OC)C=CC2=CC(C(=O)OC)=CC=C21 GYUVMLBYMPKZAZ-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
本発明は、反射板用白色ポリエステルフィルムに関する。 The present invention relates to a white polyester film for a reflector.
液晶ディスプレイは、その組み立て時に、ゴミや埃を巻き込むことがあり、輝度の低下や色斑といった品質上の問題が発生する場合がある。この問題を防ぐために、反射板に用いるフィルムには、ゴミや埃が付き難い性質が求められている。 The liquid crystal display may entrap dust and dust during its assembly, which may cause quality problems such as a decrease in brightness and color spots. In order to prevent this problem, the film used for the reflecting plate is required to be resistant to dust and dirt.
ところで、液晶ディスプレイには、光源の設置方式として、バックライト方式が採用されていたが、近年は、特開昭６３−６２１０４号公報に示されるようなサイドライト方式が広く用いられるようになっている。このサイドライト方式には、均一な表示面を得るメリットがあるが、この用途に用いられる反射板には高い反射性が求められる。 By the way, a backlight system has been adopted as a light source installation system for liquid crystal displays, but in recent years, a sidelight system as disclosed in JP-A-63-62104 has been widely used. Yes. This sidelight system has an advantage of obtaining a uniform display surface, but the reflector used in this application is required to have high reflectivity.
液晶ディスプレイの光源として一般的には冷陰極管が使用されている。この冷陰極管は熱を発生するので、冷陰極管のオンオフによってフィルムの曝される熱量が変化し、これに合わせてフィルムは熱膨張または熱収縮し、その際に、熱膨張係数の異なる他の部材、例えば導光板、と摺れ合い、不快な音を発生する場合がある。大画面化の進展した現在の液晶ディスプレイでは特にこの傾向が大きい。また、内照式電飾看板用の反射板においても、光源のオンオフによって同様の問題が生じる。 A cold cathode tube is generally used as a light source for a liquid crystal display. Since this cold cathode tube generates heat, the amount of heat to which the film is exposed changes depending on whether the cold cathode tube is turned on or off, and the film expands or contracts in accordance with this change. There is a case where an unpleasant sound is generated. This tendency is particularly large in the current liquid crystal display which has been increased in screen size. Moreover, the same problem also arises in the reflection plate for internally illuminated signboards by turning on and off the light source.
本発明は、かかる従来技術の問題点を解決することを課題とし、実用上十分な可視光領域の反射性能を備え、安定して製膜することができ、埃やゴミが付きにくく、他部材と摺れる音の発生の抑制された、液晶ディスプレイや内照式電飾看板用の反射板として好適に用いることのできる、反射板用白色ポリエステルフィルムを提供することを目的とする。 It is an object of the present invention to solve the problems of the prior art, has a practically sufficient visible light region reflection performance, can be stably formed, is difficult to be attached to dust and dirt, and other members An object of the present invention is to provide a white polyester film for a reflector, which can be suitably used as a reflector for a liquid crystal display or an interior-illuminated electric signboard, in which the generation of a squeaking sound is suppressed.
すなわち本発明は、白色ポリエステルフィルムおよびその少なくとも片面に設けられた塗布層からなり、白色ポリエステルフィルムが少なくとも３層から構成され、塗布層が帯電防止剤およびシリコーン化合物を含有することを特徴とする、反射板用白色ポリエステルフィルムである。 That is, the present invention comprises a white polyester film and a coating layer provided on at least one side thereof, the white polyester film is composed of at least three layers, and the coating layer contains an antistatic agent and a silicone compound, It is a white polyester film for reflectors.
本発明によれば、実用上十分な可視光領域の反射性能を備え、安定して製膜することができ、埃やゴミが付きにくく、他部材と摺れる音の発生の抑制された、液晶ディスプレイや内照式電飾看板用の反射板として好適に用いることのできる、反射板用白色ポリエステルフィルムを提供することができる。 According to the present invention, a liquid crystal that has a practically sufficient visible light region reflection performance, can form a film stably, is less likely to get dust and dirt, and is less likely to slid with other members. A white polyester film for a reflector that can be suitably used as a reflector for a display or an internally illuminated signboard can be provided.
以下、本発明を詳細に説明する。
［白色ポリエステルフィルム］
本発明において、白色ポリエステルフィルムは、顔料またはボイド形成物質を含有することにより白色を呈するポリエステルフィルムである。ボイド形成物質としては、無機粒子および／または有機粒子を用いることができる。
Hereinafter, the present invention will be described in detail.
[White polyester film]
In this invention, a white polyester film is a polyester film which exhibits white by containing a pigment or a void forming substance. As the void-forming substance, inorganic particles and / or organic particles can be used.
本発明における白色ポリエステルフィルムは、少なくとも３層から構成され、好ましくは３〜４９層、さらに好ましくは３〜１１層、特に好ましくは３層から構成される。特に好ましいものは、粒子を相対的に少なく含むポリエステルＡ層と粒子を相対的に多く含むポリエステルＢ層とを、Ａ／Ｂ／Ａの順に積層した白色ポリエステルフィルムである。必ずしも全ての層が白色である必要は無く、白色フィルム全体として白色であればよい。 The white polyester film in the present invention is composed of at least 3 layers, preferably 3 to 49 layers, more preferably 3 to 11 layers, and particularly preferably 3 layers. Particularly preferred is a white polyester film in which a polyester A layer containing relatively few particles and a polyester B layer containing relatively many particles are laminated in the order of A / B / A. All the layers need not necessarily be white, and the white film as a whole may be white.
各層を構成するポリエステルは、ジオール成分とジカルボン酸成分とから縮重合によって得られるポリマーである。ジカルボン酸としては、例えばテレフタル酸、イソフタル酸、２，６−ナフタリンジカルボン酸、４，４’−ジフェニルジカルボン酸、アジピン酸、セバシン酸を用いることができる。ジオールとしては、例えばエチレングリコール、１，４−ブタンジオール、１，４−シクロヘキサンジメタノール、１，６−ヘキサンジオールを用いることができる。 The polyester constituting each layer is a polymer obtained by condensation polymerization from a diol component and a dicarboxylic acid component. As the dicarboxylic acid, for example, terephthalic acid, isophthalic acid, 2,6-naphthalene dicarboxylic acid, 4,4'-diphenyldicarboxylic acid, adipic acid, and sebacic acid can be used. As the diol, for example, ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol, 1,6-hexanediol can be used.
ポリエステルとして、特にポリエチレンテレフタレート、ポリエチレン−２，６−ナフタリンジカルボキシレートが好ましい。ポリエステルは、ホモポリエステルであってもよく、共重合ポリエステルであってもよい。共重合ポリエステルの場合の共重合成分としては、例えばジエチレングリコール、ネオペンチルグリコール、ポリアルキレングリコールなどのジオール成分、アジピン酸、セバシン酸、フタル酸、イソフタル酸、２，６−ナフタレンジカルボン酸、５−ナトリウムスルホイソフタル酸といったジカルボン酸成分を挙げることができる。 As the polyester, polyethylene terephthalate and polyethylene-2,6-naphthalene dicarboxylate are particularly preferable. The polyester may be a homopolyester or a copolyester. Examples of copolymer components in the case of copolymer polyester include diol components such as diethylene glycol, neopentyl glycol, and polyalkylene glycol, adipic acid, sebacic acid, phthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, and 5-sodium. Mention may be made of dicarboxylic acid components such as sulfoisophthalic acid.
ポリエステルとしては、ポリエチレンテレフタレートまたはポリエチレンナフタレートが好ましく、高濃度に無機粒子および／または有機粒子を添加しても安定して製膜できるため、共重合ポリエチレンテレフタレートまたは共重合ポリエチレンナフタレートが好ましい。ポリエステルの融点は、好ましくは２５０℃以下、さらに好ましくは２４５℃以下、特に好ましくは２４０℃以下である。このポリエステルとして、例えば、イソフタル酸共重合ポリエチレンテレフタレート、シクロヘキサンジメタノール共重合ポリエチレンテレフタレートを挙げることができる。特に、高い耐熱性と、製膜性を得るために、２，６−ナフタレンジカルボン酸共重合ポリエチレンテレフタレートが好ましい。 Polyester is preferably polyethylene terephthalate or polyethylene naphthalate. Copolymerized polyethylene terephthalate or copolymerized polyethylene naphthalate is preferable because it can be stably formed even when inorganic particles and / or organic particles are added at a high concentration. The melting point of the polyester is preferably 250 ° C. or lower, more preferably 245 ° C. or lower, particularly preferably 240 ° C. or lower. Examples of the polyester include isophthalic acid copolymerized polyethylene terephthalate and cyclohexanedimethanol copolymerized polyethylene terephthalate. In particular, 2,6-naphthalenedicarboxylic acid copolymerized polyethylene terephthalate is preferable in order to obtain high heat resistance and film forming properties.
この白色ポリエステルフィルムを構成するポリエステルＡ層は粒子を、好ましくは１〜３０重量％、さらに好ましくは１〜１５重量％含有する。１重量％未満であると滑性が低下して巻取りが難しくなり好ましくなく、３０重量％を超えると破れやすいフィルムとなり、製膜性が低下して好ましくない。他方、Ｂ層は粒子を、好ましくは３１〜６０重量％、さらに好ましくは３１〜５５重量％含有する。３１重量％未満であると反射率が低下して好ましくなく、６０重量％を超えるとフィルムとして製膜性が非常に低下し、生産性が極端に低下して好ましくない。 The polyester A layer constituting this white polyester film preferably contains 1 to 30% by weight, more preferably 1 to 15% by weight of particles. If it is less than 1% by weight, the slipping property is lowered and winding becomes difficult, and if it exceeds 30% by weight, the film is easily broken and the film forming property is lowered, which is not preferable. On the other hand, the layer B contains 31 to 60% by weight, more preferably 31 to 55% by weight of particles. If it is less than 31% by weight, the reflectance is lowered, which is not preferable, and if it exceeds 60% by weight, the film-forming property as a film is extremely lowered, and the productivity is extremely lowered.
粒子の平均粒径は、好ましくは０．３〜３．０μｍ、さらに好ましくは０．４〜２．５μｍ、特に好ましくは０．５〜２．０μｍである。平均粒径が０．３μｍ未満であると分散性が極端に悪くなり、粒子の凝集が起こるため生産工程上のトラブルが発生し易く、フィルムに粗大突起を形成し、光沢の劣ったフィルムになったり、溶融押出し時に用いられるフィルターが粗大粒子により目詰まりを生じさせる可能性があり好ましくない。他方、平均粒径が３．０μｍを超えるとフィルムの表面が粗くなり光沢が低下するばかりか、適切な範囲に光沢度をコントロールすることが困難となり好ましくない。 The average particle size of the particles is preferably 0.3 to 3.0 μm, more preferably 0.4 to 2.5 μm, and particularly preferably 0.5 to 2.0 μm. If the average particle size is less than 0.3 μm, the dispersibility becomes extremely poor, and the particles are aggregated, so that troubles in the production process are likely to occur, and the film has coarse protrusions, resulting in a film with poor gloss. In addition, a filter used at the time of melt extrusion may cause clogging due to coarse particles, which is not preferable. On the other hand, if the average particle size exceeds 3.0 μm, the surface of the film becomes rough and the gloss decreases, and it becomes difficult to control the gloss to an appropriate range, which is not preferable.
粒子としては、無機粒子および／または有機粒子を用いることができる。無機粒子としては、例えば、硫酸バリウム、炭酸カルシウム、二酸化珪素、酸化チタンの粒子を例示することができる。有機粒子としては、シリコーン、アクリルの粒子を例示することができる。粒子は単独で用いてもよく、２種以上を併用してもよい。 As particles, inorganic particles and / or organic particles can be used. Examples of the inorganic particles include barium sulfate, calcium carbonate, silicon dioxide, and titanium oxide particles. Examples of the organic particles include silicone and acrylic particles. The particles may be used alone or in combination of two or more.
粒子としては、高い反射性や耐熱性を得ることができることから、無機粒子を用いることが好ましく、なかでもポリエステルポリマー中に安定して分散させることができ、製膜性が良く、かつ良好な反射率を得ることができることから、特に硫酸バリウム粒子を用いることが好ましい。 As the particles, it is preferable to use inorganic particles because high reflectivity and heat resistance can be obtained. In particular, the particles can be stably dispersed in the polyester polymer, have good film forming properties, and have good reflection. In particular, it is preferable to use barium sulfate particles because the rate can be obtained.
粒子をポリエステルに含有させる方法としては、下記のいずれかの方法をとることが好ましく、（ウ）または（エ）の方法をとることが特に好ましい。
（ア）ポリエステル合成時のエステル交換反応もしくはエステル化反応終了前に添加、もしくは重縮合反応開始前に添加する方法。
（イ）ポリエステルに添加し、溶融混練する方法。
（ウ）上記（ア）または（イ）の方法において粒子を多量添加したマスターペレットを製造し、これらと添加剤を含有しないポリエステルとを混練して所定量の添加物を含有させる方法。
（エ）上記（ウ）のマスターペレットをそのまま使用する方法。
As a method of incorporating the particles into the polyester, it is preferable to take any one of the following methods, and it is particularly preferable to take the method (c) or (d).
(A) A method of adding before transesterification or esterification reaction at the time of polyester synthesis or adding before the start of polycondensation reaction.
(A) A method of adding to polyester and melt-kneading.
(C) A method of producing master pellets in which a large amount of particles are added in the method (a) or (b) above, and kneading these with a polyester not containing an additive to contain a predetermined amount of additive.
(D) A method of using the master pellet of (c) as it is.
本発明では、製膜時のフィルターとして線径１５μｍ以下のステンレス鋼細線よりなる平均目開き１０〜１００μｍ、好ましくは平均目開き２０〜５０μｍの不織布型フィルターを用い、溶融ポリマーを濾過することが好ましい。この濾過を行なうことにより、一般的には凝集して粗大凝集粒子となりやすい粒子の凝集を抑えて、粗大異物の少ないフィルムを得ることができる。 In the present invention, it is preferable to filter the molten polymer by using a nonwoven fabric type filter having an average opening of 10 to 100 μm, preferably an average opening of 20 to 50 μm made of a stainless steel fine wire having a wire diameter of 15 μm or less as a filter during film formation. . By performing this filtration, it is possible to obtain a film with few coarse foreign matters by suppressing aggregation of particles that are generally agglomerated and become coarse agglomerated particles.
本発明において、白色ポリエステルフィルムには、蛍光増白剤を配合してもよい。蛍光増白剤を配合する場合には、配合するポリエステルの層のポリエステル組成物１００重量％に対して、例えば０．００５〜０．２重量％、好ましくは０．０１〜０．１重量％である。蛍光増白剤が０．００５重量％未満であると３５０ｎｍ付近の波長域の反射率が十分でないので添加する意味が乏しく、０．２重量％を越えると、蛍光増白剤の持つ特有の色が現れてしまうため好ましくない。 In the present invention, a fluorescent whitening agent may be added to the white polyester film. When the fluorescent whitening agent is blended, for example, 0.005 to 0.2% by weight, preferably 0.01 to 0.1% by weight with respect to 100% by weight of the polyester composition in the blended polyester layer. is there. If the fluorescent whitening agent is less than 0.005% by weight, the reflectance in the wavelength region near 350 nm is not sufficient, so it makes little sense to add it. If it exceeds 0.2% by weight, the specific color of the fluorescent whitening agent is present. Appears, which is not preferable.
蛍光増白剤としては、例えばＯＢ−１（イーストマン社製）、Ｕｖｉｔｅｘ−ＭＤ（チバガイギー社製）、ＪＰ−Ｃｏｎｃ（日本化学工業所製）を用いることができる。
必要に応じて、酸化防止剤、紫外線吸収剤滑剤等を添加してもよい。
As the fluorescent brightening agent, for example, OB-1 (manufactured by Eastman), Uvitex-MD (manufactured by Ciba Geigy), or JP-Conc (manufactured by Nippon Chemical Industry Co., Ltd.) can be used.
You may add antioxidant, a ultraviolet absorber lubricant, etc. as needed.
ポリエステルＢ層は、ポリエステルＡ層より粒子を高濃度で含む層であるが、その厚みは、ポリエステルＡ層およびポリエステルＢ層の合計厚み１００％に対して、好ましくは４０〜９０％、さらに好ましくは５０〜８５％である。４０％未満であると反射率が劣る可能性があり好ましくなく、９０％を超えると延伸性の低下して好ましくない。 The polyester B layer is a layer containing particles at a higher concentration than the polyester A layer, and the thickness thereof is preferably 40 to 90%, more preferably 100% with respect to 100% of the total thickness of the polyester A layer and the polyester B layer. 50-85%. If it is less than 40%, the reflectance may be inferior, which is not preferable. If it exceeds 90%, the stretchability is lowered, which is not preferable.
［帯電防止剤］
本発明において、塗布層は帯電防止剤およびシリコーン化合物を含有する。
帯電防止剤は、帯電防止性を付与する剤であり、好ましくはカチオンポリマーを用いる。このカチオンポリマーは、好ましくはビニル系重合体からなり、側鎖にカチオン性基を有し、そのカチオン性基が第４級アンモニウム塩である化合物である。第４級アンモニウム塩としては、第４級アンモニウムスルホネート、第４級アンモニウムサルフェート、第４級アンモニウムナイトレートを例示することができる。具体的には、このカチオンポリマーは、下記式で表される単位を主鎖中に含むカチオンポリマーであることが好ましい。
[Antistatic agent]
In the present invention, the coating layer contains an antistatic agent and a silicone compound.
The antistatic agent is an agent that imparts antistatic properties, and a cationic polymer is preferably used. This cationic polymer is preferably a compound made of a vinyl polymer, having a cationic group in the side chain, and the cationic group being a quaternary ammonium salt. Examples of the quaternary ammonium salt include quaternary ammonium sulfonate, quaternary ammonium sulfate, and quaternary ammonium nitrate. Specifically, the cationic polymer is preferably a cationic polymer containing a unit represented by the following formula in the main chain.
カチオンポリマーがビニル系重合体である場合、モノマー成分として、反応性モノマー成分を有することが好ましい。この場合、膜凝集性を向上させることができ、塗布層の耐久性を向上することができる。 When the cationic polymer is a vinyl polymer, it is preferable to have a reactive monomer component as the monomer component. In this case, film cohesion can be improved and durability of the coating layer can be improved.
この反応性モノマー成分として、２ーヒドロキシエチルアクリレート、２ーヒドロキシエチルメタクリレート、２ーヒドロキシプロピルアクリレート、２ーヒドロキシプロピルメタクリレート等のヒドロキシ含有モノマー；グリシジルアクリレート、グリシジルメタクリレート、アリルグリシジルエーテル等のエポキシ基含有モノマー；アクリル酸、メタクリル酸、イタコン酸、マレイン酸、フマール酸、クロトン酸、スチレンスルホン酸及びその塩（ナトリウム塩、カリウム塩、アンモニウム塩、第三級アミン塩等）等のカルボキシ基またはその塩を含有するモノマー；アクリルアミド、メタクリルアミド、Ｎ−アルキルアクリルアミド、Ｎ−アルキルメタクリルアミド、Ｎ、Ｎ−ジアルキルアクリルアミド、Ｎ、Ｎ−ジアルキルメタクリレート（アルキル基としては、メチル基、エチル基、ｎ−プロピル基、イソプロピル基、ｎ−ブチル基、イソブチル基、ｔ−ブチル基、２−エチルヘキシル基、シクロヘキシル基等）、Ｎーアルコキシアクリルアミド、Ｎ−アルコキシメタクリルアミド、Ｎ、Ｎ−ジアルコキシアクリルアミド、Ｎ、Ｎ−ジアルコキシメタクリルアミド（アルコキシ基としては、メトキシ基、エトキシ基、ブトキシ基、イソブトキシ基等）、アクリロイルモルホリン、Ｎ−メチロールアクリルアミド、Ｎ−メチロールメタクリルアミド、Ｎ−フェニルアクリルアミド、 Ｎ−フェニルメタクリルアミド等のアミド基を含有するモノマー；無水マレイン酸、無水イタコン酸等の酸無水物のモノマー；ビニルイソシアネート、アリルイソシアネート等のイソシアネート含有モノマーを例示することができる。 As this reactive monomer component, hydroxy-containing monomers such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, and 2-hydroxypropyl methacrylate; epoxy groups such as glycidyl acrylate, glycidyl methacrylate, and allyl glycidyl ether Monomers: carboxy groups such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, styrene sulfonic acid and salts thereof (sodium salt, potassium salt, ammonium salt, tertiary amine salt, etc.) or salts thereof Monomers containing: acrylamide, methacrylamide, N-alkyl acrylamide, N-alkyl methacrylamide, N, N-dialkyl acrylamide, N, N-dialkyl methacrylate (Alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, 2-ethylhexyl, cyclohexyl, etc.), N-alkoxyacrylamide, N-alkoxymethacrylamide, N, N-dialkoxyacrylamide, N, N-dialkoxymethacrylamide (alkoxy groups include methoxy, ethoxy, butoxy, isobutoxy, etc.), acryloylmorpholine, N-methylolacrylamide, Monomers containing amide groups such as N-methylol methacrylamide, N-phenyl acrylamide, N-phenyl methacrylamide; monomers of acid anhydrides such as maleic anhydride and itaconic anhydride; Isocyanates such as vinyl isocyanate and allyl isocyanate And the like containing monomers.
さらに、カチオンポリマーがビニル系重合体である場合、モノマー成分として、非反応性モノマー成分を有することが好ましい。この場合、ポリエステルフィルム上への密着性や塗布層の造膜性を向上させることができる。 Furthermore, when the cationic polymer is a vinyl polymer, it is preferable to have a non-reactive monomer component as the monomer component. In this case, the adhesion to the polyester film and the film forming property of the coating layer can be improved.
非反応性モノマー成分として、アルキルアクリレート、アルキルメタクリレート（アルキル基としては、メチル基、エチル基、ｎ−プロピル基、イソプロピル基、ｎ−ブチル基、イソブチル基、ｔ−ブチル基、２ーエチルヘキシル基、シクロヘキシル基等）、スチレン、αーメチルスチレンを例示することができる。 As non-reactive monomer components, alkyl acrylate, alkyl methacrylate (alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, 2-ethylhexyl, Cyclohexyl group, etc.), styrene, and α-methylstyrene.
帯電防止剤は塗布層に含有され、塗布層の組成物１００重量％あたり、好ましくは２０〜８０重量％、さらに好ましく３０〜７０重量％含有される。２０重量％未満であると帯電防止性が不十分となりフィルム表面に埃等が付き易くなり好ましくなく、８０重量％を超えると滑剤成分が減少することと帯電防止成分が増加し、滑性が低下し好ましくない。 The antistatic agent is contained in the coating layer, preferably 20 to 80% by weight, more preferably 30 to 70% by weight, per 100% by weight of the composition of the coating layer. If it is less than 20% by weight, the antistatic property becomes insufficient and dust or the like tends to adhere to the film surface, which is not preferable. If it exceeds 80% by weight, the lubricant component decreases, the antistatic component increases, and the slipperiness decreases. It is not preferable.
［シリコーン化合物］
本発明においてシリコーン化合物はオルガノシロキサンを骨格とする化合物であり、例えば、ジメチルシリコーン、メチルフェニルシリコーン、メチルハイドロジェンシリコーン、フロロシリコーン、シリコーンポリエーテル共重合体、アルキル変性シリコーン、高級脂肪酸変性シリコーンを挙げることができる。
[Silicone compound]
In the present invention, the silicone compound is a compound having an organosiloxane skeleton, and examples thereof include dimethyl silicone, methylphenyl silicone, methyl hydrogen silicone, fluorosilicone, silicone polyether copolymer, alkyl-modified silicone, and higher fatty acid-modified silicone. be able to.
シリコーン化合物としては反応性基を有するシリコーン化合物を用いることが好ましい。反応性基を含有しないシリコーン化合物を用いた場合には、塗布層の欠落による滑性の低下、帯電防止性の低下、欠落成分による生産工程への汚染が起きる場合があり好ましくない。 As the silicone compound, a silicone compound having a reactive group is preferably used. The use of a silicone compound that does not contain a reactive group is not preferred because it may result in a decrease in slipperiness due to a missing coating layer, a decrease in antistatic properties, and contamination of the production process due to a missing component.
この反応性基を有するシリコーン化合物としては、ケイ素原子に直接結合した反応性基を有し、アミノ基を含む有機基、エポキシ基を含む有機基、カルボン酸基を含む有機基、シラノール基もしくは加水分解によりシラノール基を生成する有機基から選ばれる反応性基を１種以上含有するものを用いることが好ましい。例えば、このシリコーンの有する反応基は、アミノ基を含む有機基としては、３−アミノプロピル基、３−アミノ−２−メチル−プロピル基、２−アミノエチル基といった１級アミノアルキル基、２）Ｎ−（２−アミノエチル）−３−アミノプロピル基、Ｎ−（２−アミノエチル）−２−アミノエチル基といった１級および２級アミノ基を有する有機基を例示することができる。 Examples of the silicone compound having a reactive group include a reactive group directly bonded to a silicon atom, an organic group including an amino group, an organic group including an epoxy group, an organic group including a carboxylic acid group, a silanol group, or a hydrolized group. It is preferable to use one containing at least one reactive group selected from organic groups that generate silanol groups by decomposition. For example, the reactive group possessed by this silicone is a primary aminoalkyl group such as a 3-aminopropyl group, a 3-amino-2-methyl-propyl group, or a 2-aminoethyl group as an organic group containing an amino group, 2) Examples thereof include organic groups having primary and secondary amino groups such as N- (2-aminoethyl) -3-aminopropyl group and N- (2-aminoethyl) -2-aminoethyl group.
エポキシ基を含む有機基としては、γ−グリシドキシプロピル基、β−グリシドキシエチル基、γ−グリシドキシ−β−メチル−プロピル基といったグリシドキシアルキル基、２−グリシドキシカルボニル−エチル基、２−グリシドキシカルボニル−プロピル基といったグリシドキシカルボニルアルキル基を例示することができる。 Examples of the organic group containing an epoxy group include glycidoxyalkyl groups such as γ-glycidoxypropyl group, β-glycidoxyethyl group, γ-glycidoxy-β-methyl-propyl group, and 2-glycidoxycarbonyl-ethyl. And a glycidoxycarbonylalkyl group such as a 2-glycidoxycarbonyl-propyl group.
加水分解によりシラノール基を生成する有機基としては、メトキシ基、エトキシ基、ブトキシ基、２−エチルヘキシロキシ基といったアルコキシ基、メトキシ−β−エトキシ基、エトキシ−β−エトキシ基、ブトキシ−β−エトキシ基といったアルコキシ−β−エトキシ基、アセトキシ基、プロポキシ基等のアシロキシ基、メチルアミノ基、エチルアミノ基、ブチルアミノ基といったＮ−アルキルアミノ基、ジメチルアミノ基、ジエチルアミノ基といったＮ，Ｎ−ジアルキルアミノ基、イミダゾール基、ピロール基といった窒素を含有する複素環基を例示することができる。 Examples of organic groups that generate silanol groups by hydrolysis include alkoxy groups such as methoxy, ethoxy, butoxy, and 2-ethylhexyloxy, methoxy-β-ethoxy, ethoxy-β-ethoxy, and butoxy-β-. Alkoxy-β-ethoxy groups such as ethoxy groups, acyloxy groups such as acetoxy groups and propoxy groups, N-alkylamino groups such as methylamino groups, ethylamino groups and butylamino groups, N, N-dialkyl groups such as dimethylamino groups and diethylamino groups Examples include nitrogen-containing heterocyclic groups such as amino groups, imidazole groups, and pyrrole groups.
シリコーン化合物は、種類の異なる反応性基を有するシリコーン化合物の混合体でもよい。かかるシリコーン化合物は分子量が１０００〜５０００００であることが好ましい。１０００未満であると塗布層の凝集力が低下して好ましくなく、５０００００を超えると粘性が高くなりハンドリングしにくく好ましくない。 The silicone compound may be a mixture of silicone compounds having different types of reactive groups. Such a silicone compound preferably has a molecular weight of 1,000 to 500,000. If it is less than 1000, the cohesive force of the coating layer is undesirably lowered, and if it exceeds 500,000, the viscosity becomes high and handling is difficult, which is not preferred.
シリコーン化合物は、塗布層中に含有され、塗布層の組成物１００重量％あたり、好ましくは５〜５０重量％、さらに好ましくは１０〜３０重量％含有される。５重量％未満であると他の接触する部材との滑性が低くなり好ましくなく、５０重量％を超えると帯電防止剤量が少なくなり、帯電防止性が悪く、埃やゴミの巻き込みが多くなり好ましくない。 The silicone compound is contained in the coating layer, preferably 5 to 50% by weight, more preferably 10 to 30% by weight, per 100% by weight of the composition of the coating layer. If it is less than 5% by weight, the slipperiness with other contacting members is low, which is not preferable. If it exceeds 50% by weight, the amount of the antistatic agent is reduced, the antistatic property is poor, and dust and dust are involved. It is not preferable.
［架橋剤］
塗布層には、架橋剤を添加させることが塗布層の凝集力向上させるために好ましい。架橋剤としては、エポキシ化合物、オキサゾリン化合物、メラミン化合物、イソシアネート化合物を例示することができ、その他のカップリング剤を用いることもできる。取り扱い易さや塗液のポットライフが長いことからエポキシ化合物、オキサゾリン化合物を用いることが好ましく、カップリング剤を用いることも好ましい。
[Crosslinking agent]
It is preferable to add a crosslinking agent to the coating layer in order to improve the cohesive strength of the coating layer. As a crosslinking agent, an epoxy compound, an oxazoline compound, a melamine compound, an isocyanate compound can be illustrated, and another coupling agent can also be used. Epoxy compounds and oxazoline compounds are preferably used because of easy handling and the pot life of the coating liquid, and a coupling agent is also preferably used.
さらに具体的には、以下のように例示することができる。
エポキシ化合物は、ポリエポキシ化合物、ジエポキシ化合物、モノエポキシ化合物、グリシジルアミン化合物等が挙げられ、ポリエポキシ化合物としては、例えば、ソルビトール、ポリグリシジルエーテル、ポリグリセロールポリグリシジルエーテル、ペンタエリスリトールポリグリシジルエーテル、ジグリセロールポリグリシジルエーテル、トリグリシジルトリス（２−ヒドロキシエチル）イソシアネート、グリセロールポリグリシジルエーテル、トリメチロールプロパンポリグリシジルエーテル、ジエポキシ化合物としては、例えば、ネオペンチルグリコールジグリシジルエーテル、１，６−ヘキサンジオールジグリシジルエーテル、レゾルシンジグリシジルエーテル、エチレングリコールジグリシジルエーテル、ポリエチレングリコールジグリシジルエーテル、プロピレングリコールジグリシジルエーテル、ポリプロピレングリコールジグリシジルエーテル、ポリテトラメチレングリコールジグリシジルエーテル、モノエポキシ化合物としては、例えば、アリルグリシジルエーテル、２−エチルヘキシルグリシジルエーテル、フェニルグリシジルエーテル、グリシジルアミン化合物としてはＮ，Ｎ，Ｎ’，Ｎ’，−テトラグリシジル−ｍ−キシリレンジアミン、１，３−ビス（Ｎ，Ｎ−ジグリシジルアミノ）シクロヘキサンが挙げられる。
More specifically, it can be exemplified as follows.
Examples of the epoxy compound include polyepoxy compounds, diepoxy compounds, monoepoxy compounds, glycidylamine compounds, etc. Examples of the polyepoxy compounds include sorbitol, polyglycidyl ether, polyglycerol polyglycidyl ether, pentaerythritol polyglycidyl ether, diester. Glycerol polyglycidyl ether, triglycidyl tris (2-hydroxyethyl) isocyanate, glycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether, diepoxy compounds include, for example, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl Ether, resorcin diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol As diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, polytetramethylene glycol diglycidyl ether, monoepoxy compound, for example, allyl glycidyl ether, 2-ethylhexyl glycidyl ether, phenyl glycidyl ether, glycidyl amine compound N, N, N ′, N ′,-tetraglycidyl-m-xylylenediamine, 1,3-bis (N, N-diglycidylamino) cyclohexane.
オキサゾリンはオキサゾリン基を含有する重合体が好ましい。付加重合性オキサゾリン基含有モノマー単独もしくは他のモノマーとの重合によって作成できる。付加重合性オキサゾリン基含有モノマーは、２−ビニル−２−オキサゾリン、２−ビニル−４−メチル−２−オキサゾリン、２−ビニル−５−メチル−２−オキサゾリン、２−イソプロペニル−２−オキサゾリン、２−イソプロペニル−４−メチル−２−オキサゾリン、２−イソプロペニル−５−エチル−２−オキサゾリン等を挙げることができ、これらの１種または２種以上の混合物を使用することができる。これらの中でも２−イソプロペニル−２−オキサゾリンが工業的にも入手しやすく好適である。他のモノマーは、付加重合性オキサゾリン基含有モノマーと共重合可能なモノマーであれば制限なく、例えばアルキルアクリレート、アルキルメタクリレート（アルキル基としては、メチル基、エチル基、ｎ−プロピル基、イソプロピル基、ｎ−ブチル基、イソブチル基、ｔ−ブチル基、２ーエチルヘキシル基、シクロヘキシル基）等のア（メタ）クリル酸エステル類；アクリル酸、メタクリル酸、イタコン酸、マレイン酸、フマール酸、クロトン酸、スチレンスルホン酸及びその塩（ナトリウム塩、カリウム塩、アンモニウム塩、第三級アミン塩等）等の不飽和カルボン酸類；アクリロニトリル、メタクリロニトリル等の不飽和ニトリル類；アクリルアミド、メタクリルアミド、Ｎ−アルキルアクリルアミド、Ｎ−アルキルメタクリルアミド、Ｎ、Ｎ−ジアルキルアクリルアミド、Ｎ、Ｎ−ジアルキルメタクリレート（アルキル基としては、メチル基、エチル基、ｎ−プロピル基、イソプロピル基、ｎ−ブチル基、イソブチル基、ｔ−ブチル基、２−エチルヘキシル基、シクロヘキシル基等）等の不飽和アミド類；酢酸ビニル、プロピオン酸ビニル等のビニルエステル類；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類；エチレン、プロピレン等のα−オレフィン類；塩化ビニル、塩化ビニリデン、フッ化ビニル等の含ハロゲンα、β−不飽和モノマー類；スチレン、α−メチルスチレン、等のα、β−不飽和芳香族モノマーを挙げることができ、これらの１種または２種以上のモノマーを使用することができる。 The oxazoline is preferably a polymer containing an oxazoline group. It can be prepared by polymerization with addition polymerizable oxazoline group-containing monomers alone or with other monomers. Addition polymerizable oxazoline group-containing monomers include 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, 2-isopropenyl-5-ethyl-2-oxazoline, and the like can be mentioned, and one or a mixture of two or more thereof can be used. Among these, 2-isopropenyl-2-oxazoline is preferred because it is easily available industrially. The other monomer is not limited as long as it is a monomer copolymerizable with an addition-polymerizable oxazoline group-containing monomer, such as alkyl acrylate, alkyl methacrylate (the alkyl group includes a methyl group, an ethyl group, an n-propyl group, an isopropyl group, (meth) acrylic acid esters such as n-butyl group, isobutyl group, t-butyl group, 2-ethylhexyl group, cyclohexyl group); acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, Unsaturated carboxylic acids such as styrenesulfonic acid and its salts (sodium salt, potassium salt, ammonium salt, tertiary amine salt, etc.); Unsaturated nitriles such as acrylonitrile, methacrylonitrile; acrylamide, methacrylamide, N-alkyl Acrylamide, N-alkyl methacrylate N, N-dialkylacrylamide, N, N-dialkylmethacrylate (alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, 2-ethylhexyl Group, cyclohexyl group, etc.); vinyl esters such as vinyl acetate and vinyl propionate; vinyl ethers such as methyl vinyl ether and ethyl vinyl ether; α-olefins such as ethylene and propylene; vinyl chloride and vinylidene chloride , Halogen-containing α, β-unsaturated monomers such as vinyl fluoride; α, β-unsaturated aromatic monomers such as styrene and α-methylstyrene, and the like, one or more of these Monomers can be used.
メラミン化合物は、メラミンとホルムアルデヒドを縮合して得られるメチロールメラミン誘導体に低級アルコールとしてメチルアルコール、エチルアルコール、イソプロピルアルコール等を反応させてエーテル化した化合物及びそれらの混合物が好ましい。メチロールメラミン誘導体としては、例えば、モノメチロールメラミン、ジメチロールメラミン、トリメチロールメラミン、テトラメチロールメラミン、ペンタメチロールメラミン、ヘキサメチロールメラミンが挙げられる。 The melamine compound is preferably a compound obtained by reacting methylol melamine derivative obtained by condensing melamine and formaldehyde with ether such as methyl alcohol, ethyl alcohol or isopropyl alcohol as a lower alcohol and a mixture thereof. Examples of the methylol melamine derivative include monomethylol melamine, dimethylol melamine, trimethylol melamine, tetramethylol melamine, pentamethylol melamine, and hexamethylol melamine.
イソシアネート化合物は、例えば、トリレンジイソシアネート、ジフェニルメタン−４，４´−ジイソシアネート、メタキシリレンジイソシアネート、ヘキサメチレン−１，６−ジイソシアネート、１，６−ジイソシアネートヘキサン、トリレンジイソシアネートとヘキサントリオールの付加物、トリレンジイソシアネートとトリメチロールプロパンの付加物、ポリオール変性ジフェニルメタン−４、４´−ジイソシアネート、カルボジイミド変性ジフェニルメタン−４，４´−ジイソシアネート、イソホロンジイソシアネート、１，５−ナフタレンジイソシアネート、３，３´−ビトリレン−４，４´ジイソシアネート、３，３´ジメチルジフェニルメタン−４，４´−ジイソシアネート、メタフェニレンジイソシアネートが挙げられる。 Isocyanate compounds include, for example, tolylene diisocyanate, diphenylmethane-4,4′-diisocyanate, metaxylylene diisocyanate, hexamethylene-1,6-diisocyanate, 1,6-diisocyanate hexane, an adduct of tolylene diisocyanate and hexane triol, Tolylene diisocyanate and trimethylolpropane adduct, polyol-modified diphenylmethane-4,4'-diisocyanate, carbodiimide-modified diphenylmethane-4,4'-diisocyanate, isophorone diisocyanate, 1,5-naphthalene diisocyanate, 3,3'-vitrylene- Examples include 4,4 'diisocyanate, 3,3' dimethyldiphenylmethane-4,4'-diisocyanate, and metaphenylene diisocyanate.
カップリング剤は、例えばシランカップリング剤が挙げられ、一般式ＹＲＳｉＸ３で示される化合物である。ここで、Ｙはビニル基、エポキシ基、アミノ基、メルカプト基といった有機官能基、Ｒはメチレン、エチレン、プロピレン基といったアルキレン基、Ｘはメトキシ基、エトキシ基といった加水分解基及びアルキル基である。Ｙ部分がエポキシ基であることが特に好ましい。 Coupling agents such as silane coupling agents and the like, a compound represented by the general formula YRSiX 3. Here, Y is an organic functional group such as vinyl group, epoxy group, amino group, and mercapto group, R is an alkylene group such as methylene, ethylene, and propylene group, and X is a hydrolyzable group such as methoxy group and ethoxy group, and an alkyl group. It is particularly preferred that the Y moiety is an epoxy group.
好ましいシランカップリング剤は、γ−グリシドキシプロピルトリメトキシシラン、γ−グリシドキシプロピルメチルジメトキシシラン、γ−グリシドキシプロピルメチルジエトキシシランである。 Preferred silane coupling agents are γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, and γ-glycidoxypropylmethyldiethoxysilane.
カップリング剤としては、ジルコニウム、チタン、アルミニウムといった金属を含む有機金属化合物を用いることができる。例えば、アルコキシド、キレート、アシレート系に分類されるものが好ましい。具体的には、ジルコニウムテトラアセチルアセトネート、ジルコニウムアセテート、チタンアセチルアセトネート、トリエタノールアミンチタネート、チタンラクテートを例示することができる。 As the coupling agent, an organometallic compound containing a metal such as zirconium, titanium, or aluminum can be used. For example, those classified into alkoxides, chelates, and acylates are preferable. Specifically, zirconium tetraacetylacetonate, zirconium acetate, titanium acetylacetonate, triethanolamine titanate, and titanium lactate can be exemplified.
架橋剤を用いる場合、架橋剤の添加量は、塗布層の組成物の重量１００重量％あたり、好ましくは５〜３０重量％とする。５重量％未満であると塗布層の凝集力が低くなり耐久性が悪化する場合があり好ましくない。３０重量％を超えると塗布層の造膜性が悪くなり、帯電防止性能が低下し好ましくない。 When using a crosslinking agent, the addition amount of the crosslinking agent is preferably 5 to 30% by weight per 100% by weight of the composition of the coating layer. If it is less than 5% by weight, the cohesive force of the coating layer is lowered, and the durability may be deteriorated. If it exceeds 30% by weight, the film forming property of the coating layer is deteriorated, and the antistatic performance is lowered, which is not preferable.
本発明において、塗布層は白色ポリエステルフィルムのうえに設けるが、塗布層は白色ポリエステルフィルムの片面に設けてもよく、両面に設けてもよい。
塗布層の厚みは、乾燥後の厚みとして、好ましくは０．００５〜０．５μｍ、さらに好ましくは０．００５〜０．２μｍである。０．００５μｍ未満であると帯電防止性が不十分となり好ましくなく、０．５μｍを超えると、塗布層が目立つようになり、塗工外観が悪くなり、好ましくない。
In this invention, although an application layer is provided on a white polyester film, an application layer may be provided in the single side | surface of a white polyester film, and may be provided in both surfaces.
The thickness of the coating layer is preferably 0.005 to 0.5 μm, more preferably 0.005 to 0.2 μm, as the thickness after drying. When the thickness is less than 0.005 μm, the antistatic property is insufficient, which is not preferable. When the thickness exceeds 0.5 μm, the coating layer becomes conspicuous and the coating appearance is deteriorated.
［界面活性剤］
塗布層を形成するための塗布液には、塗布層の組成物と化学的に不活性な界面活性剤を配合することが好ましい。界面活性剤を配合する場合、塗布層の組成物１００重量％あたり、例えば１〜２０重量％、好ましくは１〜１０重量％、さらに好ましくは５〜１０重量％配合する。かかる範囲で配合することによって、ポリエステルフィルムへの水性塗布液の濡れを促進し、塗布液の安定性を向上することができる。界面活性剤として、例えば、ポリオキシエチレン−脂肪酸エステル、ソルビタン脂肪酸エステル、グリセリン脂肪酸エステル、脂肪酸金属石鹸、アルキル硫酸塩、アルキルスルホン酸塩、アルキルスルホコハク酸塩等のアニオン型、ノニオン型界面活性剤を挙げることができる。
[Surfactant]
The coating solution for forming the coating layer preferably contains a composition that is chemically inert to the composition of the coating layer. When the surfactant is blended, it is blended, for example, 1 to 20% by weight, preferably 1 to 10% by weight, and more preferably 5 to 10% by weight per 100% by weight of the composition of the coating layer. By mix | blending in this range, wetting of the aqueous coating liquid to a polyester film can be accelerated | stimulated, and stability of a coating liquid can be improved. Examples of surfactants include anionic and nonionic surfactants such as polyoxyethylene fatty acid esters, sorbitan fatty acid esters, glycerin fatty acid esters, fatty acid metal soaps, alkyl sulfates, alkyl sulfonates, and alkyl sulfosuccinates. Can be mentioned.
［製造方法］
以下、本発明の反射板用白色ポリエステルフィルムを製造する方法を説明する。
ダイから溶融したポリマーを押し出して未延伸シートとする。積層フィルムを得る場合は、Ａ層を形成するポリマーの溶融物とＢ層を形成するポリマーの溶融物を、フィードブロックを用いて例えばＡ層／Ｂ層／Ａ層となるように積層し、ダイに展開して押出し、未延伸積層シートとする。この時、フィードブロックで積層されたポリマーは積層された形態を維持している。なお、この構成において、Ｂ層はＡ層より高濃度で粒子を含む。
[Production method]
Hereafter, the method to manufacture the white polyester film for reflectors of this invention is demonstrated.
The polymer melted from the die is extruded into an unstretched sheet. In the case of obtaining a laminated film, a polymer melt forming the A layer and a polymer melt forming the B layer are laminated so as to be, for example, A layer / B layer / A layer using a feed block. And is extruded to obtain an unstretched laminated sheet. At this time, the polymer laminated by the feed block maintains the laminated form. In this configuration, the B layer contains particles at a higher concentration than the A layer.
ダイより押出された未延伸シートは、キャスティングドラムで冷却固化され、未延伸フィルムとなる。この未延伸状フィルムをロール加熱、赤外線加熱等で加熱し、縦方向に延伸して縦延伸フィルムを得る。この延伸は２個以上のロールの周速差を利用して行うのが好ましい。延伸温度はポリエステルのガラス転移点（Ｔｇ）以上の温度、さらにはＴｇ〜７０℃高い温度とするのが好ましい。 The unstretched sheet extruded from the die is cooled and solidified by a casting drum to form an unstretched film. This unstretched film is heated by roll heating, infrared heating or the like, and stretched in the longitudinal direction to obtain a longitudinally stretched film. This stretching is preferably performed by utilizing a difference in peripheral speed between two or more rolls. The stretching temperature is preferably a temperature equal to or higher than the glass transition point (Tg) of the polyester, and more preferably a temperature higher by Tg to 70 ° C.
延伸倍率は、用途の要求特性にもよるが、縦方向、縦方向と直交する方向（以降、横方向と呼ぶ）ともに、好ましくは２．２〜４．５倍、さらに好ましくは２．３〜３．９倍である。２．２倍未満とするとフィルムの厚み斑が悪くなり良好なフィルムが得られず好ましくなく、４．５倍を超えると製膜中に破断が発生し易くなり好ましくない。 The draw ratio is preferably 2.2 to 4.5 times, more preferably 2.3 to both the longitudinal direction and the direction orthogonal to the longitudinal direction (hereinafter referred to as the transverse direction), although it depends on the required characteristics of the application. 3.9 times. When it is less than 2.2 times, the thickness unevenness of the film is deteriorated and a good film cannot be obtained, and when it exceeds 4.5 times, breakage tends to occur during film formation, which is not preferred.
縦延伸後のフィルムは、続いて、横延伸、熱固定、熱弛緩の処理を順次施して二軸配向フィルムとするが、これら処理はフィルムを走行させながら行う。横延伸の処理はポリエステルのガラス転移点（Ｔｇ）より高い温度から始める。そしてＴｇより（５〜７０）℃高い温度まで昇温しながら行う。横延伸過程での昇温は連続的でも段階的（逐次的）でもよいが通常逐次的に昇温する。例えばテンターの横延伸ゾーンをフィルム走行方向に沿って複数に分け、ゾーン毎に所定温度の加熱媒体を流すことで昇温する。横延伸の倍率は、要求特性にもよるが、好ましくは２．２〜４．５倍、さらに好ましくは２．８〜３．９倍である。２．２倍未満であるとフィルムの厚み斑が悪くなり良好なフィルムが得られず好ましくなく、４．５倍を超えると製膜中に破断が発生し易くなり好ましくない。 Subsequently, the film after longitudinal stretching is subjected to lateral stretching, heat setting, and thermal relaxation in order to form a biaxially oriented film. These processes are performed while the film is running. The transverse stretching process starts from a temperature higher than the glass transition point (Tg) of the polyester. And it is performed while raising the temperature to (5 to 70) ° C. higher than Tg. Although the temperature rise in the transverse stretching process may be continuous or stepwise (sequential), the temperature is usually raised sequentially. For example, the transverse stretching zone of the tenter is divided into a plurality along the film running direction, and the temperature is raised by flowing a heating medium having a predetermined temperature for each zone. The transverse stretching ratio is preferably 2.2 to 4.5 times, more preferably 2.8 to 3.9 times, although it depends on the required characteristics. If it is less than 2.2 times, the thickness unevenness of the film is deteriorated and a good film cannot be obtained, and if it exceeds 4.5 times, breakage tends to occur during film formation.
横延伸後のフィルムは両端を把持したまま（Ｔｍ−２０〜１００）℃で定幅または１０％以下の幅減少下で熱処理して熱収縮率を低下させるのがよい。これより高い温度であるとフィルムの平面性が悪くなり、厚み斑が大きくなり好ましくない。また、熱処理温度が（Ｔｍ−８０）℃より低いと熱収縮率が大きくなることがある。また、熱固定後フィルム温度を常温に戻す過程で（Ｔｍ−２０〜１００）℃以下の領域の熱収縮量を調整するために、把持しているフィルムの両端を切り落し、フィルム縦方向の引き取り速度を調整し、縦方向に弛緩させることができる。弛緩させる手段としてはテンター出側のロール群の速度を調整する。弛緩させる割合として、テンターのフィルムライン速度に対してロール群の速度ダウンを行い、好ましくは０．１〜１．５％、さらに好ましくは０．２〜１．２％、特に好ましくは０．３〜１．０％の速度ダウンを実施してフィルムを弛緩（この値を「弛緩率」という）して、弛緩率をコントロールすることによって縦方向の熱収縮率を調整する。また、フィルム横方向は両端を切り落すまでの過程で幅減少させて、所望の熱収縮率を得ることもできる。 The film after transverse stretching is preferably heat treated at a constant width or a width reduction of 10% or less at a temperature (Tm-20 to 100) while holding both ends to reduce the thermal shrinkage. When the temperature is higher than this, the flatness of the film is deteriorated, and the thickness unevenness becomes large, which is not preferable. On the other hand, if the heat treatment temperature is lower than (Tm-80) ° C., the thermal shrinkage rate may increase. Moreover, in order to adjust the thermal shrinkage in the region of (Tm-20 to 100) ° C. or lower in the process of returning the film temperature to room temperature after heat setting, both ends of the gripped film are cut off, and the take-up speed in the film vertical direction Can be adjusted and relaxed in the vertical direction. As a means for relaxing, the speed of the roll group on the tenter exit side is adjusted. As the rate of relaxation, the speed of the roll group is reduced with respect to the film line speed of the tenter, preferably 0.1 to 1.5%, more preferably 0.2 to 1.2%, particularly preferably 0.3. The film is relaxed by performing a speed reduction of ˜1.0% (this value is referred to as “relaxation rate”), and the longitudinal heat shrinkage rate is adjusted by controlling the relaxation rate. Further, the width in the lateral direction of the film can be reduced in the process until both ends are cut off, and a desired heat shrinkage rate can be obtained.
また、縦方向と横方向に同時に延伸する同時二軸延伸方法で製造することもできる。
このようにして得られる白色ポリエステルフィルムは、８５℃の熱収縮率が、直交する２方向ともに０．５％以下、さらに好ましくは０．４％以下、最も好ましくは０．３％以下とすることができる。
Moreover, it can also manufacture by the simultaneous biaxial stretching method of extending | stretching simultaneously to the vertical direction and a horizontal direction.
The white polyester film thus obtained should have a heat shrinkage rate of 85 ° C. of 0.5% or less, more preferably 0.4% or less, and most preferably 0.3% or less in two orthogonal directions. Can do.
二軸延伸後の白色ポリエステルフィルムの厚みは、好ましくは２５〜２５０μｍ、さらに好ましくは４０〜２５０μｍ、特に好ましくは５０〜２５０μｍである。２５μｍ未満であると反射率が低下し、２５０μｍを超えるとこれ以上厚くしても反射率の上昇が望めないことから好ましくない。 The thickness of the white polyester film after biaxial stretching is preferably 25 to 250 μm, more preferably 40 to 250 μm, and particularly preferably 50 to 250 μm. If the thickness is less than 25 μm, the reflectivity is lowered, and if it exceeds 250 μm, the increase in the reflectivity cannot be expected even if the thickness is further increased.
本発明において、塗布層を形成する塗液は、水性塗布液、例えば水溶液、水分散液、乳化液の形態で使用することが好ましい。塗布層を形成するために、必要に応じて、前記組成物以外の他の樹脂、例えば着色剤、界面活性剤、紫外線吸収剤等を添加してもよい。 In the present invention, the coating liquid for forming the coating layer is preferably used in the form of an aqueous coating liquid, for example, an aqueous solution, an aqueous dispersion, or an emulsion. In order to form the coating layer, other resins than the above-described composition, such as a colorant, a surfactant, and an ultraviolet absorber, may be added as necessary.
本発明に用いる水性塗布液の固形分濃度は、通常２０重量％以下、好ましくは１〜１０重量％である。１重量％未満であるとポリエステルフィルムへの塗れ性が不足することがあり好ましくなく、２０重量％を超えると塗液の安定性や塗布層の外観が悪化することがあり好ましくない。 The solid content concentration of the aqueous coating solution used in the present invention is usually 20% by weight or less, preferably 1 to 10% by weight. If it is less than 1% by weight, the coating properties on the polyester film may be insufficient, and if it exceeds 20% by weight, the stability of the coating liquid and the appearance of the coating layer may be deteriorated.
水性塗布液のポリエステルフィルムへの塗布は、任意の段階で実施することができるが、ポリエステルフィルムの製造過程で実施するのが好ましく、さらには配向結晶化が完了する前のポリエステルフィルムに塗布するのが好ましい。 Application of the aqueous coating solution to the polyester film can be carried out at any stage, but it is preferably carried out during the production process of the polyester film, and is further applied to the polyester film before the completion of orientational crystallization. Is preferred.
ここで、結晶配向が完了する前のポリエステルフィルムとは、未延伸フィルム、未延伸フィルムを縦方向または横方向の何れか一方に配向せしめた一軸配向フィルム、さらには縦方向および横方向の二方向に低倍率延伸配向せしめたもの（最終的に縦方向また横方向に再延伸せしめて配向結晶化を完了せしめる前の二軸延伸フィルム）等を含むものである。なかでも、未延伸フィルムまたは一方向に配向せしめた一軸延伸フィルムに、上記組成物の水性塗液を塗布し、そのまま縦延伸および／または横延伸と熱固定とを施すのが好ましい。 Here, the polyester film before the crystal orientation is completed is an unstretched film, a uniaxially oriented film in which the unstretched film is oriented in either the longitudinal direction or the transverse direction, and further in two directions, the longitudinal direction and the transverse direction. And the like that have been oriented at a low magnification (biaxially stretched film before being finally re-stretched in the machine direction or the transverse direction to complete orientation crystallization). In particular, it is preferable to apply the aqueous coating liquid of the above composition to an unstretched film or a uniaxially stretched film oriented in one direction, and perform longitudinal stretching and / or lateral stretching and heat setting as it is.
水性塗布液をフィルムに塗布する際には、塗布性を向上させるための予備処理として、フィルム表面に、例えばコロナ表面処理、火炎処理、プラズマ処理といった物理処理を施すか、予備処理をしない場合には、塗布液に、塗布層の組成物とは化学的に不活性な界面活性剤を配合することが好ましい。 When applying an aqueous coating solution to a film, as a pretreatment for improving the coatability, the film surface is subjected to physical treatment such as corona surface treatment, flame treatment, plasma treatment, or when no pretreatment is performed. In the coating solution, a surfactant that is chemically inert to the composition of the coating layer is preferably blended.
塗布方法として、公知の任意の塗工法が適用することができる。例えばロールコート法、グラビアコート法、ロールブラッシュ法、スプレーコート法、エアーナイフコート法、含浸法、カーテンコート法を適用することができる。これらは単独または組合せて用いることができる。 As a coating method, any known coating method can be applied. For example, a roll coating method, a gravure coating method, a roll brush method, a spray coating method, an air knife coating method, an impregnation method, and a curtain coating method can be applied. These can be used alone or in combination.
このようにして得られる本発明の白色ポリエステルフィルムは、その少なくとも一方の表面の反射率が波長４００〜７００ｎｍの平均反射率で９０％以上、さらに好ましくは９２％以上、さらに好ましくは９４％以上である。９０％未満であると十分な画面の輝度を得ることができないので好ましくない。 The white polyester film of the present invention thus obtained has a reflectance of at least one surface of 90% or more, more preferably 92% or more, more preferably 94% or more, with an average reflectance of a wavelength of 400 to 700 nm. is there. If it is less than 90%, it is not preferable because sufficient screen brightness cannot be obtained.
以下、実施例により本発明を詳述する。なお、各特性値は以下の方法で測定した。
（１）フィルム厚み
フィルムをエレクトリックマイクロメーター（アンリツ製 Ｋ−４０２Ｂ）にて、１０点厚みを測定し、平均値をフィルムの厚みとした。
Hereinafter, the present invention will be described in detail by way of examples. Each characteristic value was measured by the following method.
(1) Film thickness Ten-point thickness was measured for the film with an electric micrometer (K-402B manufactured by Anritsu), and the average value was defined as the film thickness.
（２）各層の厚み
フィルムを三角形に切り出し、包埋カプセルに固定後、エポキシ樹脂にて包埋した。そして、包埋されたサンプルをミクロトーム（ＵＬＴＲＡＣＵＴ−Ｓ）で縦方向に平行な断面を５０ｎｍ厚の薄膜切片にした後、透過型電子顕微鏡を用いて、加速電圧１００ｋｖにて観察撮影し、写真から各層の厚みを測定し、平均厚みを求めた。
(2) Thickness of each layer The film was cut into a triangle, fixed in an embedded capsule, and then embedded in an epoxy resin. Then, after embedding the embedded sample with a microtome (ULTRACUT-S), a cross section parallel to the longitudinal direction was made into a thin film section having a thickness of 50 nm, and then observed and photographed with a transmission electron microscope at an acceleration voltage of 100 kv. The thickness of each layer was measured and the average thickness was determined.
（３）ガラス転移点（Ｔｇ）、融点（Ｔｍ）
示差走査熱量測定装置（ＴＡ Ｉｎｓｔｒｕｍｅｎｔｓ ２１００ ＤＳＣ）を用い、昇温速度２０ｍ／分で測定を行った。
(3) Glass transition point (Tg), melting point (Tm)
Using a differential scanning calorimeter (TA Instruments 2100 DSC), the measurement was performed at a heating rate of 20 m / min.
（４）反射率
分光光度計（島津製作所製ＵＶ−３１０１ＰＣ）に積分球を取り付け、ＢａＳＯ４白板を１００％とした時の反射率を４００〜７００ｎｍにわたって測定し、得られたチャートより２ｎｍ間隔で反射率を読み取った。フィルムが積層フィルムである場合、粒子含有量の多い層の側から測定を行った。上記の範囲内で平均値を求め、全測定領域において反射率９０％以上が好ましい。
(4) Reflectance A spectrophotometer (UV-3101PC manufactured by Shimadzu Corporation) is attached with an integrating sphere, and the reflectance when BaSO 4 white plate is 100% is measured over 400 to 700 nm. From the obtained chart, the interval is 2 nm. The reflectance was read. When the film was a laminated film, the measurement was performed from the side of the layer having a large particle content. An average value is obtained within the above range, and a reflectance of 90% or more is preferable in the entire measurement region.
（５）音鳴り
フィルムのうえにアクリル板（アクリライトＬ Ｎ８６５）を重ねあわせ、その上に錘を載せてフィルムを一定速度（１０ｃｍ／分）で引っ張り、音鳴りが発生する錘の重さを測定した。
◎：５ｋｇの錘で音鳴りしない。
△：５ｋｇの錘で音鳴りする。
×：３ｋｇの錘で音鳴りする。
△以上が実用性能を有する。
(5) Sounding Acrylic plate (Acrylite L N865) is placed on top of the film, and a weight is placed on it, and the film is pulled at a constant speed (10 cm / min). It was measured.
A: No sound with 5 kg weight.
Δ: Sounds with a 5 kg weight.
X: Sounds with a 3 kg weight.
Δ or more has practical performance.
（６）表面抵抗
フィルムの塗布層表面の表面固有抵抗を、タケダ理研社製・固有抵抗測定器を使用し、測定温度２３℃、測定湿度６０％の条件で、１日調湿後、印加電圧１００Ｖで１分後の表面固有抵抗値（Ω／□）を測定した。なお、表面固有抵抗値は１×１０１２（Ω／□）以下が好ましく、１×１０１１以下がさらに好ましい。
(6) Surface resistance The surface specific resistance of the coating layer surface of the film was measured by using a specific resistance measuring instrument manufactured by Takeda Riken Co., Ltd., with a measurement temperature of 23 ° C. and a measurement humidity of 60%. The surface resistivity (Ω / □) after 1 minute at 100 V was measured. The surface resistivity is preferably 1 × 10 12 (Ω / □) or less, and more preferably 1 × 10 11 or less.
（７）塗布層強度
フィルムの塗布層表面を学振式磨耗試験機で、錘２００ｇにより荷重をかけて、ガーゼを用いて、１往復擦過した。擦過した部分の表面固有抵抗を上記（６）の測定方法で測定した。なお、初期の表面固有抵抗値と比較して、十の２乗内の上昇までが好ましく、それを超えると塗布層強度が弱く、好ましくない。より好ましくは十の１乗内の上昇までである。
(7) Strength of coating layer The surface of the coating layer of the film was rubbed once by reciprocating with a weight of 200 g using a Gakushin abrasion tester and using gauze. The surface resistivity of the rubbed portion was measured by the measurement method (6) above. In addition, compared with the initial surface specific resistance value, it is preferably up to an increase in the square of ten, and beyond that, the coating layer strength is weak, which is not preferable. More preferably, it is up to an increase within the tenth power.
（８）粒子の平均粒径
島津製作所製ＣＰ―５０型セントリフュグル パーティクル サイズ アナライザー（Ｃｅｎｔｒｉｆｕｇａｌ Ｐａｒｔｉｃｌｅ Ｓｉｚｅ Ａｎａｌｙｚｅｒ）を用いて測定した。得られる遠心沈降曲線を基に算出した各粒径の粒子とその存在量との積算曲線から、５０マスパーセントに相当する粒径を読み取り、この値を上記平均粒径とした（「粒度測定技術」日刊工業新聞社発行、１９７５年、頁２４２〜２４７参照）。
(8) Average particle diameter The particle size was measured using a CP-50 centrifugul particle size analyzer manufactured by Shimadzu Corp. (centrifugal particle size analyzer). A particle size corresponding to 50 mass percent is read from an integrated curve of particles of each particle size calculated based on the obtained centrifugal sedimentation curve and the abundance thereof, and this value is used as the average particle size (see “Particle Size Measurement Technology”). "See Nikkan Kogyo Shimbun, 1975, pages 242-247).
［実施例１〜３、比較例１〜３］
テレフタル酸ジメチル５８重量部、イソフタル酸ジメチル５重量部、エチレングリコール３７重量部、ジエチレングリコール０．４重量部、酢酸マンガン０．０５重量部、酢酸リチウム０．０１２重量部を精留塔、留出コンデンサを備えたフラスコに仕込み、撹拌しながら１５０〜２３５℃に加熱しメタノールを留出させエステル交換反応を行った。メタノールが留出した後、リン酸トリメチル０．０３重量部、二酸化ゲルマニウム０．０４重量部を添加し、反応物を反応器に移した。ついで撹拌しながら反応器内を徐々に０．５ｍｍＨｇまで減圧するとともに２９０℃まで昇温し重縮合反応を行った。得られた共重合ポリエステルのイソフタル酸成分量は８モル％、ジエチレングリコール成分量は３モル％、ガラス転移点７５℃、融点２２８℃であった。この共重合ポリエステルに平均粒径１．４μｍの硫酸バリウムを５重量％配合してＡ層用のポリエステル組成物とした。また、同じ共重合ポリエステルに平均粒径１．４μｍの硫酸バリウムを４５重量％配合してＢ層用のポリエステル組成物とした。
[Examples 1-3, Comparative Examples 1-3]
A rectifying column and a distillation condenser are 58 parts by weight of dimethyl terephthalate, 5 parts by weight of dimethyl isophthalate, 37 parts by weight of ethylene glycol, 0.4 parts by weight of diethylene glycol, 0.05 parts by weight of manganese acetate and 0.012 parts by weight of lithium acetate. Was heated to 150 to 235 ° C. while stirring to distill methanol to conduct a transesterification reaction. After the methanol was distilled off, 0.03 part by weight of trimethyl phosphate and 0.04 part by weight of germanium dioxide were added, and the reaction product was transferred to the reactor. Subsequently, while stirring, the pressure in the reactor was gradually reduced to 0.5 mmHg and the temperature was raised to 290 ° C. to carry out a polycondensation reaction. The obtained copolymer polyester had an isophthalic acid component amount of 8 mol%, a diethylene glycol component amount of 3 mol%, a glass transition point of 75 ° C, and a melting point of 228 ° C. This copolymer polyester was blended with 5% by weight of barium sulfate having an average particle diameter of 1.4 μm to obtain a polyester composition for the A layer. Further, 45% by weight of barium sulfate having an average particle size of 1.4 μm was blended with the same copolyester to obtain a polyester composition for the B layer.
これらＡ層用ポリエステルとＢ層用ポリエステルとを、それぞれ２８５℃に加熱された２台の押出機に供給し、Ａ層とＢ層がＡ／Ｂ／Ａ（＝１５／７０／１５、層厚み比率）となる３層フィードブロック装置を使用して合流させ、その積層状態を保持したままダイよりシート状に成形した。さらにこのシートを表面温度２０℃の冷却ドラムで冷却固化した未延伸フィルムを９５℃にて加熱し長手方向（縦方向）に延伸し、２０℃のロール群で冷却した。ロールコーターにより表１に示す塗布液（２重量％）を片面に均一に塗設した。続いて、縦延伸したフィルムの両端をクリップで把持しながらテンターに導き１２０℃に加熱された雰囲気中で長手に垂直な方向（横方向）に延伸した。その後テンター内で２１０℃の温度で熱固定を行い、その後、縦方向に０．５％、横方向に２．０％弛緩を行い、室温まで冷やして厚み２００μの二軸延伸された白色ポリエステルフィルムを得た。得られたフィルムは８５℃、３０分の熱収縮率が長手方向０．３％、幅方向０．３％、反射率は全測定領域で９５％であった。なお、塗布層の組成は表１の通りであり、得られた白色ポリエステルフィルムの塗布層の評価結果は表１のとおりであった。 These A layer polyester and B layer polyester are respectively supplied to two extruders heated to 285 ° C., and the A layer and the B layer are A / B / A (= 15/70/15, layer thickness). The three-layer feed block device having a ratio) was merged and formed into a sheet shape from the die while maintaining the laminated state. Further, an unstretched film obtained by cooling and solidifying the sheet with a cooling drum having a surface temperature of 20 ° C. was heated at 95 ° C., stretched in the longitudinal direction (longitudinal direction), and cooled with a 20 ° C. roll group. A coating solution (2% by weight) shown in Table 1 was uniformly applied on one side by a roll coater. Subsequently, the film was stretched in a direction perpendicular to the longitudinal direction (lateral direction) in an atmosphere heated to 120 ° C. while being guided to a tenter while holding both ends of the longitudinally stretched film with clips. Then, heat-fixed in a tenter at a temperature of 210 ° C., then relaxed by 0.5% in the vertical direction and 2.0% in the horizontal direction, cooled to room temperature, and biaxially stretched white polyester film having a thickness of 200 μm. Got. The film obtained had a thermal shrinkage of 85% at 30 ° C., a longitudinal direction of 0.3%, a width direction of 0.3%, and a reflectance of 95% in the entire measurement region. The composition of the coating layer was as shown in Table 1, and the evaluation result of the coating layer of the obtained white polyester film was as shown in Table 1.
［実施例４］
テレフタル酸ジメチル５７重量部、２，６-ナフタレンジカルボン酸ジメチル６重量部、エチレングリコール３６重量部、ジエチレングリコール０．４重量部、酢酸マンガン０．０５重量部、酢酸リチウム０．０１２重量部を精留塔、留出コンデンサを備えたフラスコに仕込み、撹拌しながら１５０〜２３５℃に加熱しメタノールを留出させエステル交換反応を行った。メタノールが留出した後、リン酸トリメチル０．０３重量部、二酸化ゲルマニウム０．０４重量部を添加し、反応物を反応器に移した。ついで撹拌しながら反応器内を徐々に０．５ｍｍＨｇまで減圧するとともに２９０℃まで昇温し重縮合反応を行った。得られた共重合ポリエステルのジエチレングリコール成分量は３モル％、ガラス転移点８０℃、融点２３０℃であった。
この共重合ポリエステルに平均粒径１．４μｍの硫酸バリウムを５重量％配合してＡ層用のポリエステル組成物とした。同じ共重合ポリエステルに平均粒径１．４μｍの硫酸バリウムを４５重量％配合してＢ層用のポリエステル組成物とした。
[Example 4]
Distilling 57 parts by weight of dimethyl terephthalate, 6 parts by weight of dimethyl 2,6-naphthalenedicarboxylate, 36 parts by weight of ethylene glycol, 0.4 parts by weight of diethylene glycol, 0.05 parts by weight of manganese acetate, and 0.012 parts by weight of lithium acetate A flask equipped with a tower and a distillation condenser was charged and heated to 150 to 235 ° C. while stirring to distill methanol to conduct a transesterification reaction. After the methanol was distilled off, 0.03 part by weight of trimethyl phosphate and 0.04 part by weight of germanium dioxide were added, and the reaction product was transferred to the reactor. Subsequently, while stirring, the pressure in the reactor was gradually reduced to 0.5 mmHg and the temperature was raised to 290 ° C. to carry out a polycondensation reaction. The amount of the diethylene glycol component of the obtained copolymer polyester was 3 mol%, the glass transition point was 80 ° C., and the melting point was 230 ° C.
This copolymer polyester was blended with 5% by weight of barium sulfate having an average particle diameter of 1.4 μm to obtain a polyester composition for the A layer. The same copolyester was blended with 45% by weight of barium sulfate having an average particle size of 1.4 μm to obtain a polyester composition for layer B.
これらＡ層用ポリエステルとＢ層用ポリエステルとを、それぞれ２８５℃に加熱された２台の押出機に供給し、Ａ層とＢ層がＡ／Ｂ／Ａ（＝１５／７０／１５、層厚み比率）となる３層フィードブロック装置を使用して合流させ、その積層状態を保持したままダイよりシート状に成形した。さらにこのシートを表面温度２０℃の冷却ドラムで冷却固化した未延伸フィルムを９５℃にて加熱し長手方向（縦方向）に延伸し、２０℃のロール群で冷却した。ロールコーターにより表１に示す塗布液（２重量％）を片面に均一に塗設した。続いて、縦延伸したフィルムの両端をクリップで把持しながらテンターに導き１２０℃に加熱された雰囲気中で長手に垂直な方向（横方向）に延伸した。その後テンター内で２１５℃の温度で熱固定を行い、その後、縦方向に０．５％、横方向に２．０％弛緩を行い、室温まで冷やして厚み１７５μの二軸延伸フィルムを得た。得られたフィルムは８５℃、３０分の熱収縮率が長手方向０．１％、幅方向０．１％、反射率は全測定領域で９５％であった。なお、塗布層の組成は表１の通りであり、得られた白色ポリエステルフィルムの塗布層の評価結果は表１のとおりであった。 These A layer polyester and B layer polyester are respectively supplied to two extruders heated to 285 ° C., and the A layer and the B layer are A / B / A (= 15/70/15, layer thickness). The three-layer feed block device having a ratio) was merged and formed into a sheet shape from the die while maintaining the laminated state. Further, an unstretched film obtained by cooling and solidifying the sheet with a cooling drum having a surface temperature of 20 ° C. was heated at 95 ° C., stretched in the longitudinal direction (longitudinal direction), and cooled with a 20 ° C. roll group. A coating solution (2% by weight) shown in Table 1 was uniformly applied on one side by a roll coater. Subsequently, the film was stretched in a direction perpendicular to the longitudinal direction (lateral direction) in an atmosphere heated to 120 ° C. while being guided to a tenter while holding both ends of the longitudinally stretched film with clips. Thereafter, heat setting was performed at a temperature of 215 ° C. in a tenter, followed by relaxation by 0.5% in the vertical direction and 2.0% in the horizontal direction, and cooling to room temperature to obtain a biaxially stretched film having a thickness of 175 μm. The film obtained had a heat shrinkage of 85% at 30 ° C., 0.1% in the longitudinal direction, 0.1% in the width direction, and a reflectance of 95% in the entire measurement region. The composition of the coating layer was as shown in Table 1, and the evaluation result of the coating layer of the obtained white polyester film was as shown in Table 1.
帯電防止剤１：
下記式に示す構造が９０モル％／Ｎ−メチロールアクリルアミド１０モル％からなる共重合体である。
A structure represented by the following formula is a copolymer composed of 90 mol% / N-methylolacrylamide 10 mol%.
シリコーン化合物１：
エポキシ変性シリコーン（信越化学工業株式会社製 商品名ＫＦ−１０２）
シリコーン化合物２：
アミノ変性シリコーン（ＧＥ東芝シリコーン株式会社製 商品名ＫＦ−８００３）
なお、シリコーン化合物１〜４については、予め界面活性剤と先に混合してから、塗布液に添加した。
界面活性剤：
ポリオキシエチレン（ｎ＝７）ラウリルエーテル（三洋化成株式会社製 商品名ナロアクティーＮ−７０）
架橋剤：
エポキシ（ナガセケムテックス株式会社製 商品名デナコールＥＸ−３１３）
Silicone compound 1:
Epoxy-modified silicone (trade name KF-102, manufactured by Shin-Etsu Chemical Co., Ltd.)
Silicone compound 2:
Amino-modified silicone (trade name KF-8003, manufactured by GE Toshiba Silicone Co., Ltd.)
In addition, about the silicone compounds 1-4, after previously mixing with surfactant, it added to the coating liquid.
Surfactant:
Polyoxyethylene (n = 7) lauryl ether (trade name NAROACTY N-70, manufactured by Sanyo Chemical Co., Ltd.)
Cross-linking agent:
Epoxy (trade name Denacol EX-313, manufactured by Nagase ChemteX Corporation)
本発明の反射板用白色ポリエステルフィルムは、各種の反射板、特に液晶ディスプレイの反射板として、また太陽電池のバックシートとして最適に用いることができる。
他に、紙代替、すなわちカード、ラベル、シール、宅配伝票、ビデオプリンタ用受像紙、インクジェット、バーコードプリンタ用受像紙、ポスター、地図、無塵紙、表示板、白板、感熱転写、オフセット印刷、テレフォンカード、ＩＣカードなどの各種印刷記録に用いられる受容シートの基材として用いることができる。
The white polyester film for a reflector of the present invention can be optimally used as various reflectors, particularly as a reflector for a liquid crystal display and as a back sheet for a solar cell.
In addition, paper substitutes, ie cards, labels, stickers, home delivery slips, video printer paper, inkjet, barcode printer paper, posters, maps, dust-free paper, display boards, white boards, thermal transfer, offset printing, telephones It can be used as a base material for receiving sheets used for various printing records such as cards and IC cards.
Claims (2)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
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| JP2007026512A JP5221880B2 (en) | 2007-02-06 | 2007-02-06 | White polyester film for reflector |
| KR1020080011664A KR101519132B1 (en) | 2007-02-06 | 2008-02-05 | White polyester film for refrector |
| TW097104680A TWI447483B (en) | 2007-02-06 | 2008-02-05 | Reflector with white polyester film |
| CN2008100856952A CN101241198B (en) | 2007-02-06 | 2008-02-13 | White polyester thin film for reflection board |
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| JP2007026512A JP5221880B2 (en) | 2007-02-06 | 2007-02-06 | White polyester film for reflector |
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| JP2008188897A true JP2008188897A (en) | 2008-08-21 |
| JP5221880B2 JP5221880B2 (en) | 2013-06-26 |
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| JP2007026512A Expired - Fee Related JP5221880B2 (en) | 2007-02-06 | 2007-02-06 | White polyester film for reflector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008189828A (en) * | 2007-02-06 | 2008-08-21 | Teijin Dupont Films Japan Ltd | White polyester film for reflector |
| WO2009096604A1 (en) * | 2008-01-31 | 2009-08-06 | Teijin Dupont Films Japan Limited | Polyester film for reflector purposes and coated polyester film for reflectors purposes |
| JP2010224446A (en) * | 2009-03-25 | 2010-10-07 | Teijin Dupont Films Japan Ltd | White film for reflection film of backlight unit of liquid crystal display device |
| JP2011027909A (en) * | 2009-07-23 | 2011-02-10 | Teijin Dupont Films Japan Ltd | White film for light reflection plate |
| JP2011099005A (en) * | 2009-11-04 | 2011-05-19 | Teijin Dupont Films Japan Ltd | Biaxially oriented polyester film for optical use |
| JP2013035278A (en) * | 2011-07-14 | 2013-02-21 | Fujifilm Corp | Method of manufacturing polymer sheet, back sheet for solar cell, and solar cell module |
| WO2015098394A1 (en) * | 2013-12-29 | 2015-07-02 | 三菱樹脂株式会社 | Biaxially stretched laminated polyester film |
| CN112485946A (en) * | 2020-12-02 | 2021-03-12 | 合肥乐凯科技产业有限公司 | Reflective film for thin direct type liquid crystal display device and preparation method thereof |
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| WO2010113920A1 (en) * | 2009-03-31 | 2010-10-07 | 帝人デュポンフィルム株式会社 | Laminated polyester film for protection of solar cell undersides |
| JP5480981B2 (en) * | 2010-12-28 | 2014-04-23 | 帝人デュポンフィルム株式会社 | Flame retardant biaxially oriented polyester film |
| TWI632402B (en) * | 2012-08-03 | 2018-08-11 | 日商帝人都朋軟片股份有限公司 | White reflective film |
| KR102231849B1 (en) * | 2019-03-28 | 2021-03-25 | 도레이첨단소재 주식회사 | Biaxially-oriented polyester reflective film and process for producing the same |
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| US6906761B2 (en) * | 2001-09-19 | 2005-06-14 | Keiwa Inc. | Reflection sheet and backlight unit using the same |
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| JP2000168016A (en) * | 1998-12-10 | 2000-06-20 | Mitsubishi Polyester Film Copp | Liquid crystal display surface protective film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008189828A (en) * | 2007-02-06 | 2008-08-21 | Teijin Dupont Films Japan Ltd | White polyester film for reflector |
| WO2009096604A1 (en) * | 2008-01-31 | 2009-08-06 | Teijin Dupont Films Japan Limited | Polyester film for reflector purposes and coated polyester film for reflectors purposes |
| JP2010224446A (en) * | 2009-03-25 | 2010-10-07 | Teijin Dupont Films Japan Ltd | White film for reflection film of backlight unit of liquid crystal display device |
| JP2011027909A (en) * | 2009-07-23 | 2011-02-10 | Teijin Dupont Films Japan Ltd | White film for light reflection plate |
| JP2011099005A (en) * | 2009-11-04 | 2011-05-19 | Teijin Dupont Films Japan Ltd | Biaxially oriented polyester film for optical use |
| JP2013035278A (en) * | 2011-07-14 | 2013-02-21 | Fujifilm Corp | Method of manufacturing polymer sheet, back sheet for solar cell, and solar cell module |
| WO2015098394A1 (en) * | 2013-12-29 | 2015-07-02 | 三菱樹脂株式会社 | Biaxially stretched laminated polyester film |
| JP2015127134A (en) * | 2013-12-29 | 2015-07-09 | 三菱樹脂株式会社 | Biaxially oriented laminated polyester film |
| CN112485946A (en) * | 2020-12-02 | 2021-03-12 | 合肥乐凯科技产业有限公司 | Reflective film for thin direct type liquid crystal display device and preparation method thereof |
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| CN101241198A (en) | 2008-08-13 |
| CN101241198B (en) | 2012-07-04 |
| JP5221880B2 (en) | 2013-06-26 |
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