JP2004244555A - Sheet or film with excellent transparency and tearability - Google Patents
Sheet or film with excellent transparency and tearability Download PDFInfo
- Publication number
- JP2004244555A JP2004244555A JP2003037537A JP2003037537A JP2004244555A JP 2004244555 A JP2004244555 A JP 2004244555A JP 2003037537 A JP2003037537 A JP 2003037537A JP 2003037537 A JP2003037537 A JP 2003037537A JP 2004244555 A JP2004244555 A JP 2004244555A
- Authority
- JP
- Japan
- Prior art keywords
- film
- sheet
- resin
- main constituent
- terephthalate
- 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.)
- Pending
Links
- 239000010954 inorganic particle Substances 0.000 claims abstract description 56
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 239000011347 resin Substances 0.000 claims abstract description 50
- 239000000470 constituent Substances 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 17
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical compound O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011342 resin composition Substances 0.000 claims abstract description 12
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000002834 transmittance Methods 0.000 claims abstract description 6
- -1 polybutylene terephthalate Polymers 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 13
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 6
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 abstract description 10
- 229920000728 polyester Polymers 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000010791 quenching Methods 0.000 abstract description 3
- 230000000171 quenching effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 36
- 230000000052 comparative effect Effects 0.000 description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 4
- 125000003827 glycol group Chemical group 0.000 description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- PXGZQGDTEZPERC-UHFFFAOYSA-N 1,4-cyclohexanedicarboxylic acid Chemical compound OC(=O)C1CCC(C(O)=O)CC1 PXGZQGDTEZPERC-UHFFFAOYSA-N 0.000 description 2
- VTDMBRAUHKUOON-UHFFFAOYSA-N 4-[(4-carboxyphenyl)methyl]benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1CC1=CC=C(C(O)=O)C=C1 VTDMBRAUHKUOON-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
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 2
- 229920001283 Polyalkylene terephthalate Polymers 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- FNGGVJIEWDRLFV-UHFFFAOYSA-N anthracene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=CC3=C(C(O)=O)C(C(=O)O)=CC=C3C=C21 FNGGVJIEWDRLFV-UHFFFAOYSA-N 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
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- PDXRQENMIVHKPI-UHFFFAOYSA-N cyclohexane-1,1-diol Chemical compound OC1(O)CCCCC1 PDXRQENMIVHKPI-UHFFFAOYSA-N 0.000 description 2
- XBZSBBLNHFMTEB-UHFFFAOYSA-N cyclohexane-1,3-dicarboxylic acid Chemical compound OC(=O)C1CCCC(C(O)=O)C1 XBZSBBLNHFMTEB-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- DFFZOPXDTCDZDP-UHFFFAOYSA-N naphthalene-1,5-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1C(O)=O DFFZOPXDTCDZDP-UHFFFAOYSA-N 0.000 description 2
- 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 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 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
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910002033 SYLYSIA SY440 Inorganic materials 0.000 description 1
- 229910002049 SYLYSIA SY470 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 1
- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical compound OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
【課題】本発明では、安価なポリエステルを原料とし、透明性、易裂性に優れ、かつガスバリア性、防湿性、強度、剛性、熱安定性に優れたシートまたはフィルムを提供することを課題とする。
【解決手段】ブチレンテレフタレートを主たる構成単位とする樹脂またはブチレンテレフタレートを主たる構成単位とする樹脂とエチレンテレフタレートを主たる構成単位とする樹脂の混合物100重量部に対して平均粒径0.1〜10μmの無機粒子を0.05〜2重量部を配合してなる樹脂組成物を溶融成形して急冷した未延伸シートまたはフィルムを50〜200℃の温度範囲で熱処理してなるシートまたはフィルムであって、引裂強さX、全光線透過率Y、ヘイズZが下記式(1)〜(3)を満足するシートまたはフィルム。
50N/mm≧X(1)
80%≦Y(2)
20%≧Z(3)
【選択図】なしAn object of the present invention is to provide a sheet or film which is made of inexpensive polyester as a raw material, is excellent in transparency and tearability, and is excellent in gas barrier properties, moisture resistance, strength, rigidity and thermal stability. I do.
An average particle diameter of 0.1 to 10 µm is based on 100 parts by weight of a resin having butylene terephthalate as a main constituent unit or a mixture of a resin having butylene terephthalate as a main constituent unit and a resin having ethylene terephthalate as a main constituent unit. A sheet or film obtained by heat-treating a non-stretched sheet or film obtained by melt-molding a resin composition comprising 0.05 to 2 parts by weight of inorganic particles and quenching at a temperature range of 50 to 200 ° C, A sheet or film having a tear strength X, a total light transmittance Y, and a haze Z satisfying the following formulas (1) to (3).
50N / mm ≧ X (1)
80% ≦ Y (2)
20% ≧ Z (3)
[Selection diagram] None
Description
【0001】
【発明の属する技術分野】
本発明は、透明性、易裂性、滑り性、保香性、防湿性、強度、耐熱性に優れ、食品、医薬品、化粧品、雑貨等の包装材料として有用なシートまたはフィルムに関する。
【0002】
【従来の技術】
食品、医薬品、雑貨等の包装には種々の合成樹脂からなる包装材料が使用されている。特に最近では強度、剛性、防湿性、耐薬品性等に優れる二軸延伸ポリエチレンテレフタレートフィルム(BO−PETフィルム)が幅広く使用されている。
【0003】
しかしながら二軸延伸ポリエチレンテレフタレートフィルムは易裂性に劣り、包装体として使用した場合には容易に開封できないという欠点を有している。
これを改良する方法としてノッチを入れるという方法があるが、ノッチを入れたとしても直線的に引き裂けず、包装体として使用した場合には容易に開封できないという問題点がある。
【0004】
そこで、近年、このような問題点を解決する方法として、分子量600〜4000のポリテトラメチレングリコール単位を共重合したポリブチレンテレフタレートとポリエチレンテレフタレートを配合してなる樹脂を用いた二軸延伸ポリエステルフィルムが提案されている(例えば特許文献1)。
【0005】
また、類似の構造として、分子量600〜4000のポリテトラメチレングリコール単位を共重合したポリブチレンテレフタレートとポリエチレンテレフタレートを配合してなる樹脂を用いたフィルムに接着剤を介してシーラントフィルムを積層したフィルム(例えば特許文献2)、分子量600〜4000のポリテトラメチレングリコール単位を共重合したポリブチレンテレフタレートとポリエチレンテレフタレートを配合してなる樹脂を用いたフィルムの少なくとも片面にポリ塩化ビニリデン系共重合体層を積層したフィルム(例えば特許文献3)が提案されている。
【0006】
更にポリマーアロイを用いた易裂性フィルムも提案されている。ポリアルキレンテレフタレート、スチレン系重合体からなる樹脂組成物からなるフィルム(例えば特許文献4)、ポリアルキレンテレフタレート、スチレン系重合体、ポリエーテルからなる樹脂組成物からなるフィルム(例えば特許文献5)ポリカーボネート、ポリエステル、スチレン系共重合体からなる樹脂組成物からなるフィルム(例えば特許文献6)、ポリエチレン−2,6−ナフタレートと熱可塑性ポリマーからなる樹脂組成物からなるフィルム(例えば特許文献7)が知られている。
【0007】
また、平均粒径0.1〜5μmの無機充填物0.05〜0.5重量%配合し、無延伸成形してなる運搬時に傷の付かない透明ポリエステル製成形品が提案されている(特許文献8)。
【0008】
しかしながら特許文献1〜3に記載されているようなポリテトラメチレングリコール単位を共重合したポリブチレンテレフタレートは柔軟材料であるため、得られるフィルムの強度が低く、またガスバリア性が劣るという欠点を有する。またポリテトラメチレングリコールが高価であるために材料コストが高くなる上に易裂性も不十分という欠点を有している。更にこれらの方法では二軸延伸が必要であるため、延伸装置と延伸工程が必要であり、装置コストやランニングコストがかかる。
【0009】
また、特許文献4〜6に記載されているようなスチレン系重合体をアロイ化した材料から得られるフィルムは延伸工程が不要というメリットはあるものの、ガスバリア性、透明性に劣り、厚みや表面状態が不均質になるという欠点を有している。また、易裂性も不十分である。
【0010】
更に特許文献7に記載されているポリエチレン−2,6−ナフタレートと熱可塑性ポリマーからなる樹脂組成物からなるフィルムは、ガスバリア性、透明性に劣り、厚みや表面状態が不均質になるという欠点を有している。また、易裂性も不十分である上に材料コストが高い、延伸装置と工程が必要という欠点を有している。
【0011】
また、特許文献8には急冷した未延伸成形品を熱処理することによって透明性と易裂性を兼ね備えたシートまたはフィルムが得られるということについては何ら示唆されていない。
【0012】
【特許文献1】
特開平10−168293号公報([0007]〜[0008]段落)
【特許文献2】
特開平11−227135号公報([0006]〜[0007]段落)
【特許文献3】
特開平11−300916号公報([0006]〜[0007]段落)
【特許文献4】
特開平7−292183号公報([0006]〜[0007]段落)
【特許文献5】
特開平8−156121号公報([0006]〜[0007]段落)
【特許文献6】
特開平9−52966号公報([0007]〜[0008]段落)
【特許文献7】
特開平11−217448号公報([0008]段落)
【特許文献8】
特開平7−48503号公報([0003]段落)
【0013】
【発明が解決しようとする課題】
そこで本発明は、安価なポリエステルを原料とし、透明性、易裂性に優れ、かつ滑り性、ガスバリア性、防湿性、強度、剛性、熱安定性に優れたシートまたはフィルムを提供することを目的とする。
【0014】
【課題を解決するための手段】
本発明者らは、上記課題を解決すべく鋭意研究した結果、本発明に到達した。すなわち本発明は、ブチレンテレフタレートを主たる構成単位とする樹脂またはブチレンテレフタレートを主たる構成単位とする樹脂とエチレンテレフタレートを主たる構成単位とする樹脂の混合物100重量部に対して平均粒径10μm以下の無機粒子を0.05〜2重量部を配合してなる樹脂組成物を溶融成形して急冷した未延伸シートまたはフィルムを50〜200℃の温度範囲で熱処理してなる透明性と易裂性に優れたシートまたはフィルムであって、引裂強さX、全光線透過率Y、ヘイズZが下記式(1)〜(3)を満足するシートまたはフィルムを提供するものである。
50N/mm≧X・・・・・(1)
ただし、XはJIS K 7128に従って測定した値である。
80%≦Y ・・・・・(2)
20%≧Z ・・・・・(3)
ただし、Y、ZはASTM D 1003に従って測定した値を意味する。
【0015】
【発明の実施の形態】
本発明で用いられるブチレンテレフタレートを主たる構成単位とする樹脂としては、1,4−ブタンジオール、テレフタル酸またはその低級アルコールエステルを主たる構成成分とし重縮合して得られた樹脂をいう。最も好ましい樹脂としては、ポリブチレンテレフタレートであるが、以下に示す成分を共重合しても良い。共重合可能な酸成分としては、イソフタル酸、フタル酸、2,6−ナフタレンジカルボン酸、1,5−ナフタレンジカルボン酸、ビス(p−カルボキシフェニル)メタン、アントラセンジカルボン酸、4,4´−ジフェニルエーテルジカルボン酸、5−ナトリウムスルホイソフタル酸などの芳香族ジカルボン酸、アジピン酸、セバシン酸、アゼライン酸、ドデカンジオン酸などの脂肪族ジカルボン酸、1,3−シクロヘキサンジカルボン酸、1,4−シクロヘキサンジカルボン酸などの脂環式ジカルボン酸およびこれらのエステル形成性誘導体などが挙げられる。また共重合可能なジオール成分としては炭素数2〜20の脂肪族グリコールすなわち、エチレングリコール、プロピレングリコール、ネオペンチルグリコール、1,5−ペンタンジオール、1,6−ヘキサンジオール、デカメチレングリコール、シクロヘキサンジメタノール、シクロヘキサンジオールなど、あるいは分子量400〜6000の長鎖グリコール、すなわちポリエチレングリコール、ポリ−1,2−プロピレングリコール、ポリ−1,3−プロピレングリコール、ポリテトラメチレングリコールなど、およびこれらのエステル形成性誘導体などが挙げられる。これらの共重合可能な成分は、それぞれテレフタル酸または1,4−ブタンジオールに対して5重量%未満である。5重量%以上では強度やガスバリア性が低下し好ましくない。また、これらのブチレンテレフタレートを主たる構成単位とする樹脂はo−クロロフェノール溶液を25℃で測定したときの固有粘度が0.36〜2.00dl/g、特に0.80〜1.80dl/gの範囲にあるものが機械的特性、製膜性の点から好適である。
【0016】
本発明で用いられるエチレンテレフタレートを主たる構成単位とする樹脂としては、エチレングリコール、テレフタル酸またはその低級アルコールエステルを主たる構成成分とし重縮合して得られた樹脂をいう。最も好ましい樹脂としては、ポリエチレンテレフタレートであるが、以下に示す成分を共重合しても良い。共重合可能な酸成分としては、イソフタル酸、フタル酸、2,6−ナフタレンジカルボン酸、1,5−ナフタレンジカルボン酸、ビス(p−カルボキシフェニル)メタン、アントラセンジカルボン酸、4,4´−ジフェニルエーテルジカルボン酸、5−ナトリウムスルホイソフタル酸などの芳香族ジカルボン酸、アジピン酸、セバシン酸、アゼライン酸、ドデカンジオン酸などの脂肪族ジカルボン酸、1,3−シクロヘキサンジカルボン酸、1,4−シクロヘキサンジカルボン酸などの脂環式ジカルボン酸およびこれらのエステル形成性誘導体などが挙げられる。また共重合可能なジオール成分としては炭素数2〜20の脂肪族グリコールすなわち、プロピレングリコール、ネオペンチルグリコール、1,4−ブタンジオール、1,5−ペンタンジオール、1,6−ヘキサンジオール、デカメチレングリコール、シクロヘキサンジメタノール、シクロヘキサンジオールなど、あるいは分子量400〜6000の長鎖グリコール、すなわちポリエチレングリコール、ポリ−1,2−プロピレングリコール、ポリ−1,3−プロピレングリコール、ポリテトラメチレングリコールなど、およびこれらのエステル形成性誘導体などが挙げられる。これらの共重合可能な成分は、それぞれテレフタル酸またはエチレングリコールに対して5重量%未満である。5重量%以上では強度やガスバリア性が低下し好ましくない。また、これらのエチレンテレフタレートを主たる構成単位とする樹脂はo−クロロフェノール溶液を25℃で測定したときの固有粘度が0.36〜1.80dl/g、特に0.60〜1.60dl/gの範囲にあるものが機械的特性、製膜性の点から好適である。
【0017】
本発明で使用される樹脂は上記のブチレンテレフタレートを主たる構成単位とする樹脂または上記のブチレンテレフタレートを主たる構成単位とする樹脂とエチレンテレフタレートを主たる構成単位とする樹脂の混合物である。ブチレンテレフタレートを主たる構成単位とする樹脂とエチレンテレフタレートを主たる構成単位とする樹脂の混合物を使用する場合の混合比率には特に限定されないが、優れた透明性と易裂性を発現させるためにはエチレンテレフタレートを主たる構成単位とする樹脂の比率を60重量%以下、好ましくは50重量%以下、更に好ましくは40重量%以下である。
【0018】
本発明で用いられる無機粒子の種類には特に限定はない。ガラス、炭素、チタン酸カリウム、酸化亜鉛、硼酸アルミニウム、アルミナ、炭化珪素、セラミック、金属粉、ゼオライト、セリサイト、カオリン、マイカ、クレー、パイロフィライト、ベントナイト、タルク、アルミナシリケート、シリカ、酸化マグネシウム、酸化ジルコニウム、酸化チタン、酸化鉄、炭酸カルシウム、炭酸マグネシウム、ドロマイト、硫酸カルシウム、硫酸バリウム、水酸化マグネシウム、水酸化カルシウム、水酸化アルミニウム、窒化ホウ素、炭化珪素などがあげられ、複数種類を併用しても良い。これらの中でも特にシリカ粒子が得られるフィルムの透明性、易裂性の観点から好ましい。
【0019】
本発明で使用される無機粒子の平均粒径はコールカウンター法で測定した時の値であり、該無機粒子が0.1μmより小さいと得られたフィルムの滑り性が不十分であり、10μmより大きいと透明性が悪化する。
【0020】
本発明で使用される無機粒子の添加量は、ブチレンテレフタレートを主たる構成単位とする樹脂またはブチレンテレフタレートを主たる構成単位とする樹脂とエチレンテレフタレートを主たる構成単位とする樹脂の混合物100重量部に対して0.05〜2重量部である。0.05重量部より少ないと得られたフィルムの滑り性が不十分であり、2重量部を越えると透明性が悪化する。
【0021】
また、無機粒子をイソシアネート系化合物、有機シラン系化合物、有機チタネート系化合物、有機ボラン系化合物、およびエポキシ化合物などのカップリング剤で同時にもしくは予備的に処理して使用することは、より優れた機械的特性や外観を得る意味において好ましい。
【0022】
さらに、本発明では、本発明の目的を損なわない範囲で、要求される特性に応じて他のポリエステル樹脂や他のポリマー類、添加剤、結晶核剤、耐熱剤や紫外線吸収剤などの安定剤、難燃剤、帯電防止剤、可塑剤、滑剤、着色剤、およびカップリング剤などを少量添加することも可能である。
【0023】
本発明のシートまたはフィルムを溶融成形する方法は特に限定されず、公知の方法を用いて製造される。例えばT−ダイ法、インフレーション法、プレス成形法などが用いられ、溶融成形した後、樹脂のガラス転移温度(Tg)以下の温度に急冷することが必要である。急冷の方法も公知の方法を採用することができる。例えば、T−ダイ法であれば冷却したロール上に押出する、あるいは水中に押出することができる。またインフレーション法であれば水で冷却する方法、低温エアーで冷却することができる。また、プレス法の場合にはプレス品を冷却水中に浸漬する方法、プレス品を低温エアーで冷却する方法などを採用することができる。
【0024】
本発明の透明性と易裂性に優れたシートまたはフィルムを得るには上記のようにして得られた未延伸シートまたはフィルムを50〜200℃の温度範囲で熱処理することが必須である。より好ましくは55〜150℃の温度範囲が好まく、さらに60〜120℃の温度範囲がより好ましい。
【0025】
本発明のシートまたはフィルムの引き裂き強さXは50N/mm以下である必要があり、引き裂き強さが50N/mmより大きいと得られたシートまたはフィルムを用いて作製した包装袋などの引き裂き性が不十分となり、開封が困難となる。
【0026】
本発明のシートまたはフィルムの全光線透過率Yは80%以上である必要がある。全光線透過率が80%以下では透明性が悪くなり、商品価値が損なわれる。
【0027】
さらに、本発明のシートまたはフィルムのヘイズZは20%以下である必要がある。ヘイズが20%を越えると透明性が不十分であり、容器・包装袋などに使用した場合、内容物が容易に視認できず、商品価値が損なわれる。
【0028】
この熱処理によって透明性を保持したまま易裂性が発現するというメカニズムの詳細は明確にはなっていないが、熱処理によって極めて微細結晶が高密度に生成するという結晶状態の変化が生じたためであると推測される。
【0029】
熱処理の方法としては公知の方法が適用でき、切り出したシートまたはフィルムを所定温度に設定した熱風オーブンや恒温槽中で処理する方法、シートまたはフィルムをロール形状のまま、すなわち巻き姿のまま熱風オーブンや恒温槽中で熱処理する方法などが採用できる。また、押出・急冷して得られたシートまたはフィルムを引き続きオンラインで熱処理することも可能である。例えばT−ダイ法やインフレーデョン法で溶融押出・急冷した後、巻き取り工程までの間で熱処理を施す方法、巻き取り部分での温度を調整して熱処理を施す方法などが採用できる。
【0030】
本発明でいう未延伸フィルムとは、前記方法により得られた未延伸フィルムそのものを意味するが、フィルムを得た後に温度変化等により伸縮した場合であっても、本発明の目的とするところの透明性、易裂性に影響を与えない程度の変化であればこれに含まれるものとする。
【0031】
本発明のシートまたはフィルムの厚みとしては特に制限はないが、良好な透明性、易裂性、強度、加工性、形状保持性を発現させるためには10〜300μmであることが好ましい。
【0032】
本発明で用いられるシートまたはフィルムは、本発明の効果を損なわない範囲で更にガスバリア性、防湿性、意匠性、加工性を持たせるために他のシート、フィルム、紙等をラミネートしても良く、フィルムの片面または両面に金属および/または金属化合物の蒸着を行っても良い。蒸着層を施す方法としては特に制限はないが、真空蒸着、EB蒸着法、スパッタリング、イオンプレーティング、プラズマCVD等の公知の方法を用いることができる。この中で生産性やコストの点から、真空蒸着法が最も好ましい。フィルムと蒸着金属および/または金属酸化物等の蒸着皮膜との密着性を向上させるために、フィルムの表面をあらかじめコロナ放電処理やアンカーコート剤を塗布するなどの方法により前処理しておくことが好ましい方法である。フィルムに蒸着させる金属および/または金属酸化物としては、アルミニウム、酸化アルミニウム、酸化珪素等が挙げられ、アルミニウムが最も好ましい。得られる蒸着層の膜厚としては10〜100nmであることが好ましく、より好ましくは15〜90nm、さらに好ましくは20〜80nmである。膜厚が10nm以上であると均一な蒸着膜厚が得られやすく、また100nm以下であるとクラック等蒸着層に欠陥が発生しにくく、さらなるガスバリヤー性向上が望めるからである。
【0033】
【実施例】
以下、本発明を実施例を用いて具体的に説明するが、本発明はこれら実施例によって何ら限定されるものではない。
【0034】
[易裂性の測定]
シートまたはフィルムを150mm×50mmの短冊状に切り出し、中央部に75mmの切り欠きを入れ、島津製作所社製引張試験機を用いて、JIS K 7128(A法)に規定されている方法に従って、引き裂いた時の平均引裂強さを測定した。
【0035】
[全光線透過率の測定]
東洋精機製作所社製直読式ヘイズメーターを用い、ASTM D 1003に規定されている方法に従って測定した。
【0036】
[ヘイズの測定]
東洋精機製作所社製直読式ヘイズメーターを用い、ASTM D 1003に規定されている方法に従って測定した。
【0037】
[滑り性の測定]
東洋精機製作所社製摩擦測定機TR−2を用い、JIS K 7125に規定されている方法にて静摩擦係数を測定した。静摩擦係数≦0.8を滑り性良好と判断した。
【0038】
(参考例1) 無機粒子マスターAの製造
ポリブチレンテレフタレート(以下「PBT」という)樹脂(東レ製1100、固有粘度0.9)を90重量部に対し、シリカ(富士シリシア製:サイリシア440、平均粒径:3.5μm)を10重量部の比率で配合し、30mm2軸押出機(L/D=32)を用い、シリンダー温度:260℃で押出して無機粒子マスターAを得た。
【0039】
(参考例2) 無機粒子マスターBの製造
無機粒子にシリカ(触媒化成製:“SGX−20”、平均粒径:0.2μm)を使用した以外は、参考例1と同様にして、無機粒子マスターBを得た。
【0040】
(参考例3) 無機粒子マスターCの製造
無機粒子にシリカ(水澤化学製:“ミズカシルP−50”、平均粒径:8.5μm)を使用した以外は、参考例1と同様にして、無機粒子マスターCを得た。
【0041】
(参考例4) 無機粒子マスターDの製造
無機粒子にゼオライト(水澤化学製:“シルトンJC−20”、平均粒径:2.0μm)を使用した以外は、参考例1と同様にして、無機粒子マスターDを得た。
【0042】
(参考例5) 無機粒子マスターEの製造
無機粒子にシリカ(日産化学製:“MP−4540M”、平均粒径:0.045μm)を使用した以外は、参考例1と同様にして、無機粒子マスターEを得た。
【0043】
(参考例6) 無機粒子マスターFの製造
無機粒子にシリカ(富士シリシア製:“サイリシア470”、平均粒径:12.0μm)を使用した以外は、参考例1と同様にして、無機粒子マスターFを得た。
【0044】
参考例1〜6の無機粒子マスターで使用する原材料の一覧を表1に示す。
【0045】
【表1】
【0046】
(実施例1)
ポリブチレンテレフタレート(以下「PBT」という)樹脂(東レ製1200、固有粘度1.2)と無機粒子マスターAを表2に示す比率で配合し、下記の条件で押出して厚み50μmのフィルムを得た。
【0047】
<押出条件>
押出機:40mm単軸押出機、L/D=26、
スクリュー:フルフライトコンスタントピッチ(3ゾーン型)、圧縮比3.1
ダイズ:単層Tダイス、幅400mm、リップ間距離1mm、コートハンガー型
シリンダー温度:260℃
キャストドラム温度:15℃。
【0048】
得られたフィルムをA4サイズに切り出し、80℃の恒温槽に入れて5分熱処理した。処理後のフィルムの引裂性、透明性を評価した。結果を表4に示す。
【0049】
(実施例2)
無機粒子を無機粒子マスターBにする以外は、実施例1と同様にして50μmのフィルムを得た。
【0050】
(実施例3)
無機粒子を無機粒子マスターCにする以外は、実施例1と同様にして50μmのフィルムを得た。
【0051】
(実施例4)
無機粒子を無機粒子マスターDにする以外は、実施例1と同様にして50μmのフィルムを得た。
【0052】
(実施例5)
無機粒子添加量を表2に示す比率で配合した以外は、実施例1と同様にして50μmのフィルムを得た。
【0053】
(実施例6)
無機粒子添加量を表2に示す比率で配合した以外は、実施例1と同様にして50μmのフィルムを得た。
【0054】
(実施例7)
PBT樹脂を東レ製1100(固有粘度0.9)にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0055】
(実施例8)
PBT樹脂を東レ製1400(固有粘度1.7)にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0056】
(実施例9)
樹脂組成をPBT樹脂(東レ製1200、固有粘度1.2)50部、ポリエチレンテレフタレート(以下「PET」という)樹脂(三井化学製J125、固有粘度0.8)50部にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0057】
(実施例10)
樹脂組成をPBT樹脂(東レ製1200、固有粘度1.2)80重量部、PET樹脂(三井PET製J125、固有粘度0.8)20重量部にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0058】
(実施例11)
フィルムの熱処理温度を50℃にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0059】
(実施例12)
フィルムの熱処理温度を200℃にする以外は、実施例1と同様にして50μmのフィルムを得た。
【0060】
(比較例1)
PBT樹脂(東レ製1200、固有粘度1.2)と無機粒子マスターEを表3に示す比率で配合し、下記の条件で押出して厚み50μmのフィルムを得た。
【0061】
<押出条件>
押出機:40mm単軸押出機、L/D=26、
スクリュー:フルフライトコンスタントピッチ(3ゾーン型)、圧縮比3.1
ダイズ:単層Tダイス、幅400mm、リップ間距離1mm、コートハンガー型
シリンダー温度:260℃
キャストドラム温度:15℃。
【0062】
得られたフィルムをA4サイズに切り出し、80℃の恒温槽に入れて5分熱処理した。処理後のフィルムの引裂性、透明性を評価した。結果を表5に示す。
【0063】
(比較例2)
無機粒子を無機粒子マスターFにする以外は、比較例1と同様にして50μmのフィルムを得た。
【0064】
(比較例3)
無機粒子を無機粒子マスターAにし、無機粒子添加量を表3に示す比率にする以外は、比較例1と同様にして50μmのフィルムを得た。
【0065】
(比較例4)
無機粒子を無機粒子マスターAにし、無機粒子添加量を表3に示す比率にする以外は、比較例1と同様にして50μmのフィルムを得た。
【0066】
(比較例5)
無機粒子を無機粒子マスターAにし、樹脂組成をPET樹脂(三井PET製J125、固有粘度0.8)100重量部にする以外は、比較例1と同様にして50μmのフィルムを得た。
【0067】
(比較例6)
無機粒子を無機粒子マスターAにし、押出条件のキャストドラム温度を60℃した(急冷をしない)以外は、比較例1と同様にして50μmのフィルムを得た。
【0068】
(比較例7)
無機粒子を無機粒子マスターAにし、フィルムの熱処理を行わない以外は、比較例1と同様にして50μmのフィルムを得た。
【0069】
(比較例8)
無機粒子を無機粒子マスターAにし、フィルムの熱処理温度を40℃にする以外は、比較例1と同様にして50μmのフィルムを得た。
【0070】
(比較例9)
無機粒子を無機粒子マスターAにし、比較例1と同様にして得たフィルムを、220℃で熱処理したところ、フィルムが溶融し、フィルム状を保てなかった。
【0071】
以上の実施例1〜12、比較例1〜9の材料組成、構成の一覧を表2〜3に示す。
【0072】
【表2】
【0073】
【表3】
【0074】
実施例1〜12及び比較例1〜9で作成したフィルムの評価結果を表4〜5に示す。
【0075】
【表4】
【0076】
【表5】
【0077】
実施例1から、本発明のフィルムは易裂性、透明性に優れることが分かる。
【0078】
実施例2〜3から、本発明のフィルムは無機粒子の粒径を変えても易裂性、透明性に優れることが分かる。
【0079】
実施例4から、本発明のフィルムは無機粒子の種類が変わっても易裂性、透明性に優れていることが分かる。
【0080】
実施例5〜6から、本発明のフィルムは無機粒子の添加量が変わっても易裂性、透明性に優れていることが分かる。
【0081】
実施例7〜8から、本発明のフィルムはPBT樹脂の粘度が変わっても易裂性、透明性に優れていることが分かる。
【0082】
実施例9〜10から、本発明のフィルムはPBT樹脂にPET樹脂をブレンドしても易裂性、透明性に優れていることが分かる。
【0083】
実施例11〜12から、本発明のフィルムは熱処理温度を変えても易裂性、透明性に優れていることが分かる。
【0084】
比較例1〜2から、本発明のフィルムは無機粒子の粒子径が著しく小さいものは滑り性に劣り、粒子径が著しく大きいものは透明性に劣ることが分かる。
【0085】
比較例3〜4から、本発明のフィルムは無機粒子の添加量が少ないと滑り性が不十分であり、多すぎると透明性に劣ることが分かる。
【0086】
比較例5から、本発明のフィルムは樹脂組成がPET樹脂では透明性に劣ることが分かる。
【0087】
比較例6から、本発明のフィルムは製膜時に徐冷すると透明性に劣ることが分かる。
【0088】
比較例7〜9から、本発明のフィルムは熱処理がない、もしくは温度が低すぎると易裂性が劣り、高すぎると溶融しフィルム形状が保持できないことが分かる。
【0089】
【発明の効果】
本発明により、安価なポリエステルを原料とし、透明性、易裂性に優れ、かつガスバリア性、防湿性、強度、剛性、熱安定性に優れたシートまたはフィルムを提供することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sheet or film having excellent transparency, tearability, slipperiness, fragrance retention, moisture proofing, strength, and heat resistance, and being useful as a packaging material for foods, pharmaceuticals, cosmetics, sundries, and the like.
[0002]
[Prior art]
BACKGROUND ART Packaging materials made of various synthetic resins are used for packaging foods, medicines, miscellaneous goods, and the like. Particularly recently, biaxially stretched polyethylene terephthalate films (BO-PET films) having excellent strength, rigidity, moisture resistance, chemical resistance and the like have been widely used.
[0003]
However, the biaxially stretched polyethylene terephthalate film has a disadvantage that it is inferior in tearability and cannot be easily opened when used as a package.
As a method of improving this, there is a method of inserting a notch. However, even if the notch is inserted, it does not tear linearly and cannot be easily opened when used as a package.
[0004]
Therefore, in recent years, as a method for solving such a problem, a biaxially stretched polyester film using a resin obtained by blending polybutylene terephthalate and polyethylene terephthalate copolymerized with polytetramethylene glycol units having a molecular weight of 600 to 4000 has been proposed. It has been proposed (for example, Patent Document 1).
[0005]
Further, as a similar structure, a film obtained by laminating a sealant film via an adhesive on a film using a resin obtained by blending polybutylene terephthalate and polyethylene terephthalate copolymerized with polytetramethylene glycol units having a molecular weight of 600 to 4000 ( For example, Patent Literature 2), a polyvinylidene chloride-based copolymer layer is laminated on at least one surface of a film using a resin obtained by blending polybutylene terephthalate and polyethylene terephthalate copolymerized with polytetramethylene glycol units having a molecular weight of 600 to 4000. (For example, Patent Document 3) has been proposed.
[0006]
Further, an easily tearable film using a polymer alloy has been proposed. Polyalkylene terephthalate, a film composed of a resin composition composed of a styrene polymer (for example, Patent Document 4), a polyalkylene terephthalate, a styrene polymer, a film composed of a resin composition composed of a polyether (for example, Patent Document 5) polycarbonate, A film composed of a resin composition comprising a polyester and a styrene-based copolymer (for example, Patent Document 6) and a film composed of a resin composition composed of polyethylene-2,6-naphthalate and a thermoplastic polymer (for example, Patent Document 7) are known. ing.
[0007]
Further, a molded article made of a transparent polyester which is blended with an inorganic filler having an average particle diameter of 0.1 to 5 μm in an amount of 0.05 to 0.5% by weight and which is not stretched and is not damaged during transportation has been proposed (patented). Reference 8).
[0008]
However, polybutylene terephthalate obtained by copolymerizing polytetramethylene glycol units as described in Patent Literatures 1 to 3 is a flexible material, and thus has a disadvantage that the obtained film has low strength and has poor gas barrier properties. In addition, polytetramethylene glycol is disadvantageous in that the material cost is high due to the high price and the tearability is insufficient. Further, since biaxial stretching is required in these methods, a stretching apparatus and a stretching step are required, which increases equipment cost and running cost.
[0009]
Films obtained from alloyed styrene polymers as described in Patent Documents 4 to 6 have the advantage of not requiring a stretching step, but are inferior in gas barrier properties and transparency, and have poor thickness and surface condition. Has the disadvantage of becoming heterogeneous. Further, the tearability is insufficient.
[0010]
Further, the film composed of a resin composition comprising polyethylene-2,6-naphthalate and a thermoplastic polymer described in Patent Document 7 has the disadvantages of being inferior in gas barrier properties and transparency, and having a nonuniform thickness and surface state. Have. In addition, they have the disadvantages of insufficient tearability, high material cost, and the need for stretching equipment and steps.
[0011]
Patent Document 8 does not suggest that a sheet or a film having both transparency and tearability can be obtained by heat-treating a rapidly cooled unstretched molded product.
[0012]
[Patent Document 1]
JP-A-10-168293 (paragraphs [0007] to [0008])
[Patent Document 2]
JP-A-11-227135 (paragraphs [0006] to [0007])
[Patent Document 3]
JP-A-11-300916 (paragraphs [0006] to [0007])
[Patent Document 4]
JP-A-7-292183 (paragraphs [0006] to [0007])
[Patent Document 5]
JP-A-8-156121 (paragraphs [0006] to [0007])
[Patent Document 6]
JP-A-9-52966 (paragraphs [0007] to [0008])
[Patent Document 7]
JP-A-11-217448 (paragraph [0008])
[Patent Document 8]
JP-A-7-48503 (paragraph [0003])
[0013]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a sheet or film that is excellent in transparency, tearability, and excellent in slipperiness, gas barrier properties, moisture resistance, strength, rigidity, and thermal stability using inexpensive polyester as a raw material. And
[0014]
[Means for Solving the Problems]
The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention provides an inorganic particle having an average particle size of 10 μm or less with respect to 100 parts by weight of a resin having butylene terephthalate as a main constituent unit or a mixture of a resin having butylene terephthalate as a main constituent unit and a resin having ethylene terephthalate as a main constituent unit. And a quenched unstretched sheet or film obtained by subjecting a resin composition prepared by mixing 0.05 to 2 parts by weight to a heat treatment in a temperature range of 50 to 200 ° C. and having excellent transparency and tearability. The present invention provides a sheet or film which has a tear strength X, a total light transmittance Y, and a haze Z satisfying the following formulas (1) to (3).
50 N / mm ≧ X (1)
Here, X is a value measured according to JIS K 7128.
80% ≦ Y (2)
20% ≧ Z (3)
Here, Y and Z mean values measured according to ASTM D 1003.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
The resin having butylene terephthalate as a main constituent unit used in the present invention refers to a resin obtained by polycondensation using 1,4-butanediol, terephthalic acid or a lower alcohol ester thereof as a main constituent component. The most preferred resin is polybutylene terephthalate, but the following components may be copolymerized. Examples of copolymerizable acid components include isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracenedicarboxylic acid, and 4,4′-diphenyl ether Aromatic dicarboxylic acids such as dicarboxylic acid and 5-sodium sulfoisophthalic acid; aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid and dodecanedioic acid; 1,3-cyclohexanedicarboxylic acid; and 1,4-cyclohexanedicarboxylic acid And alicyclic dicarboxylic acids and ester-forming derivatives thereof. Examples of the copolymerizable diol component include aliphatic glycols having 2 to 20 carbon atoms, that is, ethylene glycol, propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, and cyclohexanediene. Methanol, cyclohexanediol and the like, or long-chain glycols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,2-propylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, and the like, and their ester-forming properties Derivatives and the like. These copolymerizable components are less than 5% by weight, based on terephthalic acid or 1,4-butanediol, respectively. If the content is 5% by weight or more, strength and gas barrier properties decrease, which is not preferable. In addition, these resins containing butylene terephthalate as a main constituent unit have an intrinsic viscosity of 0.36 to 2.00 dl / g, particularly 0.80 to 1.80 dl / g when an o-chlorophenol solution is measured at 25 ° C. Are preferred in terms of mechanical properties and film forming properties.
[0016]
The resin having ethylene terephthalate as a main constituent unit used in the present invention refers to a resin obtained by polycondensation using ethylene glycol, terephthalic acid or a lower alcohol ester thereof as a main constituent component. The most preferred resin is polyethylene terephthalate, but the following components may be copolymerized. Examples of copolymerizable acid components include isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracenedicarboxylic acid, and 4,4′-diphenyl ether Aromatic dicarboxylic acids such as dicarboxylic acid and 5-sodium sulfoisophthalic acid; aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid and dodecanedioic acid; 1,3-cyclohexanedicarboxylic acid; and 1,4-cyclohexanedicarboxylic acid And alicyclic dicarboxylic acids and ester-forming derivatives thereof. Examples of the copolymerizable diol component include aliphatic glycols having 2 to 20 carbon atoms, such as propylene glycol, neopentyl glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, and decamethylene. Glycol, cyclohexanedimethanol, cyclohexanediol, or the like, or a long-chain glycol having a molecular weight of 400 to 6000, such as polyethylene glycol, poly-1,2-propylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, and the like. And the like. These copolymerizable components are less than 5% by weight, based on terephthalic acid or ethylene glycol, respectively. If the content is 5% by weight or more, strength and gas barrier properties decrease, which is not preferable. In addition, these resins having ethylene terephthalate as a main constituent unit have an intrinsic viscosity of 0.36 to 1.80 dl / g, particularly 0.60 to 1.60 dl / g when an o-chlorophenol solution is measured at 25 ° C. Are preferred in terms of mechanical properties and film forming properties.
[0017]
The resin used in the present invention is a resin having the above-mentioned butylene terephthalate as a main structural unit or a mixture of the above-mentioned resin having a main structural unit of butylene terephthalate and a resin having a main structural unit of ethylene terephthalate. The mixing ratio when using a mixture of a resin having butylene terephthalate as a main constituent unit and a resin having ethylene terephthalate as a main constituent unit is not particularly limited.However, in order to exhibit excellent transparency and tearability, ethylene is required. The proportion of the resin having terephthalate as a main constituent unit is 60% by weight or less, preferably 50% by weight or less, more preferably 40% by weight or less.
[0018]
The type of the inorganic particles used in the present invention is not particularly limited. Glass, carbon, potassium titanate, zinc oxide, aluminum borate, alumina, silicon carbide, ceramic, metal powder, zeolite, sericite, kaolin, mica, clay, pyrophyllite, bentonite, talc, alumina silicate, silica, magnesium oxide , Zirconium oxide, titanium oxide, iron oxide, calcium carbonate, magnesium carbonate, dolomite, calcium sulfate, barium sulfate, magnesium hydroxide, calcium hydroxide, aluminum hydroxide, boron nitride, silicon carbide, etc. You may. Among these, it is particularly preferable from the viewpoint of transparency and easy tearability of a film from which silica particles are obtained.
[0019]
The average particle size of the inorganic particles used in the present invention is a value measured by a coal counter method, and when the inorganic particles are smaller than 0.1 μm, the slipperiness of the obtained film is insufficient, and the average particle size is smaller than 10 μm. If it is too large, the transparency deteriorates.
[0020]
The amount of the inorganic particles used in the present invention is, based on 100 parts by weight of a resin having butylene terephthalate as a main constituent unit or a mixture of a resin having butylene terephthalate as a main constituent unit and a resin having ethylene terephthalate as a main constituent unit. It is 0.05 to 2 parts by weight. If the amount is less than 0.05 part by weight, the slipperiness of the obtained film is insufficient, and if it exceeds 2 parts by weight, the transparency deteriorates.
[0021]
In addition, using inorganic particles simultaneously or preliminarily treated with a coupling agent such as an isocyanate-based compound, an organic silane-based compound, an organic titanate-based compound, an organic borane-based compound, and an epoxy compound is a better machine. It is preferable from the viewpoint of obtaining proper characteristics and appearance.
[0022]
Furthermore, in the present invention, other polyester resins and other polymers, additives, crystal nucleating agents, stabilizers such as heat-resistant agents and ultraviolet absorbers according to the required properties, as long as the object of the present invention is not impaired. , A flame retardant, an antistatic agent, a plasticizer, a lubricant, a colorant, a coupling agent, and the like can be added in small amounts.
[0023]
The method for melt-molding the sheet or film of the present invention is not particularly limited, and the sheet or film is produced using a known method. For example, a T-die method, an inflation method, a press molding method, or the like is used. After melt molding, it is necessary to rapidly cool the resin to a temperature equal to or lower than the glass transition temperature (Tg) of the resin. A well-known method can also be used for the quenching method. For example, in the case of the T-die method, it can be extruded on a cooled roll or extruded in water. In the case of the inflation method, it can be cooled by water or by low-temperature air. In the case of the pressing method, a method of immersing the pressed product in cooling water, a method of cooling the pressed product with low-temperature air, and the like can be adopted.
[0024]
In order to obtain a sheet or film having excellent transparency and tearability according to the present invention, it is essential that the unstretched sheet or film obtained as described above is heat-treated at a temperature in the range of 50 to 200 ° C. More preferably, a temperature range of 55 to 150 ° C is preferable, and a temperature range of 60 to 120 ° C is more preferable.
[0025]
The tear strength X of the sheet or film of the present invention must be 50 N / mm or less, and if the tear strength is greater than 50 N / mm, the tearability of a packaging bag or the like produced using the obtained sheet or film will be poor. Insufficient and difficult to open.
[0026]
The total light transmittance Y of the sheet or film of the present invention needs to be 80% or more. If the total light transmittance is 80% or less, the transparency is deteriorated, and the commercial value is impaired.
[0027]
Further, the haze Z of the sheet or film of the present invention needs to be 20% or less. If the haze exceeds 20%, the transparency is insufficient, and when used in containers and packaging bags, the contents cannot be easily visually recognized, and the commercial value is impaired.
[0028]
The details of the mechanism by which this heat treatment develops tearability while maintaining transparency have not been clarified, but it is because the heat treatment caused a change in the crystal state in which extremely fine crystals were formed at a high density. Guessed.
[0029]
As a heat treatment method, a known method can be applied, and a method of treating a cut sheet or film in a hot air oven or a constant temperature bath set to a predetermined temperature, a hot air oven in which the sheet or film remains in a roll shape, that is, a rolled shape Or a method of heat treatment in a constant temperature bath. It is also possible to continuously heat-treat the sheet or film obtained by extrusion and quenching on-line. For example, a method of performing a heat treatment before the winding step after melt-extrusion and rapid cooling by a T-die method or an inflation method, a method of adjusting the temperature at the winding part, and performing a heat treatment can be adopted.
[0030]
The unstretched film as referred to in the present invention means the unstretched film itself obtained by the above method, but even if the film is expanded or contracted due to temperature change after obtaining the film, the object of the present invention is not considered. Any change that does not affect transparency and tearability is included in this.
[0031]
The thickness of the sheet or film of the present invention is not particularly limited, but is preferably from 10 to 300 μm in order to exhibit good transparency, tearability, strength, workability, and shape retention.
[0032]
The sheet or film used in the present invention may be further laminated with other sheets, films, papers, etc. in order to impart gas barrier properties, moisture proof properties, design properties, and workability within a range that does not impair the effects of the present invention. The metal and / or metal compound may be deposited on one or both surfaces of the film. Although there is no particular limitation on the method of forming the vapor deposition layer, a known method such as vacuum vapor deposition, EB vapor deposition, sputtering, ion plating, or plasma CVD can be used. Among them, the vacuum deposition method is most preferable in terms of productivity and cost. In order to improve the adhesion between the film and the deposited film such as a deposited metal and / or metal oxide, the surface of the film may be pre-treated in advance by a method such as corona discharge treatment or application of an anchor coating agent. This is the preferred method. Examples of the metal and / or metal oxide to be deposited on the film include aluminum, aluminum oxide, and silicon oxide, with aluminum being most preferred. The thickness of the obtained vapor deposition layer is preferably from 10 to 100 nm, more preferably from 15 to 90 nm, and further preferably from 20 to 80 nm. If the film thickness is 10 nm or more, a uniform deposited film thickness can be easily obtained, and if it is 100 nm or less, defects such as cracks hardly occur in the deposited layer, and further improvement in gas barrier properties can be expected.
[0033]
【Example】
Hereinafter, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.
[0034]
[Measurement of tearability]
A sheet or film is cut out into a strip of 150 mm × 50 mm, a notch of 75 mm is made in the center, and the sheet or film is torn using a tensile tester manufactured by Shimadzu Corporation in accordance with the method prescribed in JIS K 7128 (Method A). The average tear strength was measured.
[0035]
[Measurement of total light transmittance]
The measurement was carried out using a direct-reading haze meter manufactured by Toyo Seiki Seisaku-Sho, Ltd. according to the method specified in ASTM D1003.
[0036]
[Measurement of haze]
The measurement was carried out using a direct-reading haze meter manufactured by Toyo Seiki Seisaku-Sho, Ltd. according to the method specified in ASTM D1003.
[0037]
[Slidability measurement]
Using a friction measuring device TR-2 manufactured by Toyo Seiki Seisaku-Sho, Ltd., the static friction coefficient was measured by the method specified in JIS K 7125. A coefficient of static friction ≦ 0.8 was judged to be good for slipperiness.
[0038]
(Reference Example 1) Production of inorganic particle master A 90 parts by weight of polybutylene terephthalate (hereinafter referred to as “PBT”) resin (1100, manufactured by Toray, intrinsic viscosity: 0.9) was mixed with silica (manufactured by Fuji Silysia: Sylysia 440, average). (Particle size: 3.5 μm) in a ratio of 10 parts by weight and extruded at a cylinder temperature of 260 ° C. using a 30 mm twin screw extruder (L / D = 32) to obtain inorganic particle master A.
[0039]
(Reference Example 2) Production of Inorganic Particle Master B Inorganic particles were prepared in the same manner as in Reference Example 1, except that silica ("SGX-20", average particle size: 0.2 µm) was used as the inorganic particles. Master B was obtained.
[0040]
(Reference Example 3) Production of Inorganic Particle Master C In the same manner as in Reference Example 1, except that silica (Mizukasil P-50, average particle size: 8.5 μm) was used for the inorganic particles, Particle Master C was obtained.
[0041]
(Reference Example 4) Production of Inorganic Particle Master D Except that zeolite (manufactured by Mizusawa Chemical: "Silton JC-20", average particle size: 2.0 µm) was used as the inorganic particles, the same procedure as in Reference Example 1 was repeated. Particle Master D was obtained.
[0042]
(Reference Example 5) Production of Inorganic Particle Master E Inorganic particles were prepared in the same manner as in Reference Example 1, except that silica (manufactured by Nissan Chemical: "MP-4540M", average particle size: 0.045 µm) was used as the inorganic particles. Master E was obtained.
[0043]
(Reference Example 6) Production of Inorganic Particle Master F An inorganic particle master was prepared in the same manner as in Reference Example 1 except that silica (manufactured by Fuji Silysia Ltd .: “Sylysia 470”, average particle size: 12.0 μm) was used as the inorganic particles. F was obtained.
[0044]
Table 1 shows a list of raw materials used in the inorganic particle masters of Reference Examples 1 to 6.
[0045]
[Table 1]
[0046]
(Example 1)
Polybutylene terephthalate (hereinafter referred to as "PBT") resin (manufactured by Toray, 1200, intrinsic viscosity 1.2) and inorganic particle master A were blended in the ratio shown in Table 2, and extruded under the following conditions to obtain a film having a thickness of 50 µm. .
[0047]
<Extrusion conditions>
Extruder: 40 mm single screw extruder, L / D = 26,
Screw: Full flight constant pitch (3 zone type), compression ratio 3.1
Soybean: Single-layer T-die, width 400mm, distance between lips 1mm, coat hanger type cylinder temperature: 260 ° C
Cast drum temperature: 15 ° C.
[0048]
The obtained film was cut into A4 size, placed in a thermostat at 80 ° C., and heat-treated for 5 minutes. The tearability and transparency of the film after the treatment were evaluated. Table 4 shows the results.
[0049]
(Example 2)
A 50 μm film was obtained in the same manner as in Example 1, except that the inorganic particles were changed to inorganic particle master B.
[0050]
(Example 3)
A 50 μm film was obtained in the same manner as in Example 1, except that the inorganic particles were changed to inorganic particle master C.
[0051]
(Example 4)
A 50 μm film was obtained in the same manner as in Example 1, except that the inorganic particles were changed to inorganic particle master D.
[0052]
(Example 5)
A film having a thickness of 50 μm was obtained in the same manner as in Example 1 except that the inorganic particles were added in the ratio shown in Table 2.
[0053]
(Example 6)
A film having a thickness of 50 μm was obtained in the same manner as in Example 1 except that the inorganic particles were added in the ratio shown in Table 2.
[0054]
(Example 7)
A 50 μm film was obtained in the same manner as in Example 1, except that the PBT resin was changed to Toray 1100 (intrinsic viscosity 0.9).
[0055]
(Example 8)
A 50 μm film was obtained in the same manner as in Example 1, except that the PBT resin was changed to Toray 1400 (intrinsic viscosity: 1.7).
[0056]
(Example 9)
Except that the resin composition was 50 parts of a PBT resin (1200 manufactured by Toray, intrinsic viscosity 1.2) and 50 parts of a polyethylene terephthalate (hereinafter referred to as “PET”) resin (J125 manufactured by Mitsui Chemicals, 0.8 intrinsic viscosity). In the same manner as in Example 1, a 50 μm film was obtained.
[0057]
(Example 10)
50 μm in the same manner as in Example 1 except that the resin composition was changed to 80 parts by weight of PBT resin (1200 manufactured by Toray, intrinsic viscosity 1.2) and 20 parts by weight of PET resin (J125 manufactured by Mitsui PET, intrinsic viscosity 0.8). Was obtained.
[0058]
(Example 11)
A 50-μm film was obtained in the same manner as in Example 1, except that the heat treatment temperature of the film was changed to 50 ° C.
[0059]
(Example 12)
A 50 μm film was obtained in the same manner as in Example 1, except that the heat treatment temperature of the film was set to 200 ° C.
[0060]
(Comparative Example 1)
A PBT resin (manufactured by Toray, 1200, intrinsic viscosity 1.2) and an inorganic particle master E were blended in the ratio shown in Table 3, and extruded under the following conditions to obtain a film having a thickness of 50 µm.
[0061]
<Extrusion conditions>
Extruder: 40 mm single screw extruder, L / D = 26,
Screw: Full flight constant pitch (3 zone type), compression ratio 3.1
Soybean: Single-layer T-die, width 400mm, distance between lips 1mm, coat hanger type cylinder temperature: 260 ° C
Cast drum temperature: 15 ° C.
[0062]
The obtained film was cut into A4 size, placed in a thermostat at 80 ° C., and heat-treated for 5 minutes. The tearability and transparency of the film after the treatment were evaluated. Table 5 shows the results.
[0063]
(Comparative Example 2)
A film of 50 μm was obtained in the same manner as in Comparative Example 1, except that the inorganic particles were changed to inorganic particle master F.
[0064]
(Comparative Example 3)
A 50 μm film was obtained in the same manner as in Comparative Example 1, except that the inorganic particles were used as the inorganic particle master A, and the amount of the inorganic particles added was adjusted to the ratio shown in Table 3.
[0065]
(Comparative Example 4)
A 50 μm film was obtained in the same manner as in Comparative Example 1, except that the inorganic particles were used as the inorganic particle master A, and the amount of the inorganic particles added was adjusted to the ratio shown in Table 3.
[0066]
(Comparative Example 5)
A 50 μm film was obtained in the same manner as in Comparative Example 1, except that the inorganic particles were used as the inorganic particle master A and the resin composition was changed to 100 parts by weight of a PET resin (J125, manufactured by Mitsui PET, intrinsic viscosity: 0.8).
[0067]
(Comparative Example 6)
A film of 50 μm was obtained in the same manner as in Comparative Example 1, except that the inorganic particles were used as the inorganic particle master A, and the casting drum temperature under the extrusion conditions was 60 ° C. (no rapid cooling).
[0068]
(Comparative Example 7)
A film of 50 μm was obtained in the same manner as in Comparative Example 1 except that the inorganic particles were used as the inorganic particle master A and the heat treatment of the film was not performed.
[0069]
(Comparative Example 8)
A 50 μm film was obtained in the same manner as in Comparative Example 1 except that the inorganic particles were used as the inorganic particle master A and the heat treatment temperature of the film was set at 40 ° C.
[0070]
(Comparative Example 9)
When a film obtained in the same manner as in Comparative Example 1 was heat-treated at 220 ° C., the film was melted and the film shape could not be maintained.
[0071]
Tables 2 and 3 show a list of the material compositions and configurations of Examples 1 to 12 and Comparative Examples 1 to 9 described above.
[0072]
[Table 2]
[0073]
[Table 3]
[0074]
Tables 4 and 5 show the evaluation results of the films prepared in Examples 1 to 12 and Comparative Examples 1 to 9.
[0075]
[Table 4]
[0076]
[Table 5]
[0077]
Example 1 shows that the film of the present invention is excellent in tearability and transparency.
[0078]
From Examples 2 and 3, it is understood that the film of the present invention has excellent tearability and transparency even when the particle size of the inorganic particles is changed.
[0079]
Example 4 shows that the film of the present invention is excellent in tearability and transparency even when the type of inorganic particles is changed.
[0080]
Examples 5 to 6 show that the film of the present invention has excellent tearability and transparency even when the added amount of the inorganic particles is changed.
[0081]
It can be seen from Examples 7 and 8 that the film of the present invention has excellent tearability and transparency even when the viscosity of the PBT resin changes.
[0082]
It can be seen from Examples 9 to 10 that the film of the present invention has excellent tearability and transparency even when a PET resin is blended with a PBT resin.
[0083]
From Examples 11 to 12, it can be seen that the film of the present invention is excellent in tearability and transparency even when the heat treatment temperature is changed.
[0084]
From Comparative Examples 1 and 2, it can be seen that in the film of the present invention, those having an extremely small particle diameter of inorganic particles are inferior in slipperiness, and those having an extremely large particle diameter are inferior in transparency.
[0085]
From Comparative Examples 3 and 4, it can be seen that the film of the present invention is insufficient in slipperiness when the amount of the inorganic particles is small, and poor in transparency when the amount is too large.
[0086]
From Comparative Example 5, it can be seen that the resin composition of the film of the present invention is inferior in transparency to PET resin.
[0087]
Comparative Example 6 shows that the film of the present invention is inferior in transparency when gradually cooled during film formation.
[0088]
From Comparative Examples 7 to 9, it can be seen that the film of the present invention has no heat treatment, or if the temperature is too low, the tearability is poor, and if it is too high, it melts and the film shape cannot be maintained.
[0089]
【The invention's effect】
According to the present invention, it is possible to provide a sheet or film which is excellent in transparency and tearability and excellent in gas barrier properties, moisture resistance, strength, rigidity and thermal stability, using inexpensive polyester as a raw material.
Claims (8)
50N/mm≧X (1)
ただし、XはJIS K 7128に従って測定した値である。
80%≦Y (2)
20%≧Z (3)
ただし、Y、ZはASTM D 1003に従って測定した値を意味する。Inorganic particles having an average particle size of 0.1 to 10 μm with respect to 100 parts by weight of a resin having butylene terephthalate as a main constituent unit or a mixture of a resin having butylene terephthalate as a main constituent unit and a resin having ethylene terephthalate as a main constituent unit. And a quenched unstretched sheet or film obtained by subjecting a resin composition prepared by mixing 0.05 to 2 parts by weight to a heat treatment at a temperature in the range of 50 to 200 ° C. A sheet or film having a thickness X, a total light transmittance Y, and a haze Z satisfying the following formulas (1) to (3).
50N / mm ≧ X (1)
Here, X is a value measured according to JIS K 7128.
80% ≦ Y (2)
20% ≧ Z (3)
Here, Y and Z mean values measured according to ASTM D 1003.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003037537A JP2004244555A (en) | 2003-02-17 | 2003-02-17 | Sheet or film with excellent transparency and tearability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003037537A JP2004244555A (en) | 2003-02-17 | 2003-02-17 | Sheet or film with excellent transparency and tearability |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2004244555A true JP2004244555A (en) | 2004-09-02 |
Family
ID=33022309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003037537A Pending JP2004244555A (en) | 2003-02-17 | 2003-02-17 | Sheet or film with excellent transparency and tearability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2004244555A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017193687A (en) * | 2016-04-22 | 2017-10-26 | 三菱ケミカル株式会社 | Polybutylene terephthalate pellet for film |
JP2019081825A (en) * | 2017-10-30 | 2019-05-30 | 東レ株式会社 | Polybutylene terephthalate resin master batch for film, and polybutylene terephthalate resin composition for film |
WO2021215506A1 (en) * | 2020-04-22 | 2021-10-28 | 東洋製罐株式会社 | Multilayer film and packaging container |
JP2022079924A (en) * | 2020-11-17 | 2022-05-27 | Dic株式会社 | Masterbatch, aromatic polyester resin compositions, moldings and methods for producing them |
JP2022079922A (en) * | 2020-11-17 | 2022-05-27 | Dic株式会社 | Masterbatch, aromatic polyester resin compositions, moldings and methods for producing them |
-
2003
- 2003-02-17 JP JP2003037537A patent/JP2004244555A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017193687A (en) * | 2016-04-22 | 2017-10-26 | 三菱ケミカル株式会社 | Polybutylene terephthalate pellet for film |
JP2019081825A (en) * | 2017-10-30 | 2019-05-30 | 東レ株式会社 | Polybutylene terephthalate resin master batch for film, and polybutylene terephthalate resin composition for film |
JP7130939B2 (en) | 2017-10-30 | 2022-09-06 | 東レ株式会社 | Polybutylene terephthalate resin masterbatch for film and polybutylene terephthalate resin composition for film |
WO2021215506A1 (en) * | 2020-04-22 | 2021-10-28 | 東洋製罐株式会社 | Multilayer film and packaging container |
JP2021171961A (en) * | 2020-04-22 | 2021-11-01 | 東洋製罐株式会社 | Laminated film and packaging container |
JP2022079924A (en) * | 2020-11-17 | 2022-05-27 | Dic株式会社 | Masterbatch, aromatic polyester resin compositions, moldings and methods for producing them |
JP2022079922A (en) * | 2020-11-17 | 2022-05-27 | Dic株式会社 | Masterbatch, aromatic polyester resin compositions, moldings and methods for producing them |
JP7639305B2 (en) | 2020-11-17 | 2025-03-05 | Dic株式会社 | MASTERBATCH, AROMATIC POLYESTER RESIN COMPOSITION, MOLDED ARTICLE AND METHOD FOR PRODUCTION THEREOF |
JP7707525B2 (en) | 2020-11-17 | 2025-07-15 | Dic株式会社 | MASTERBATCH, AROMATIC POLYESTER RESIN COMPOSITION, MOLDED ARTICLE AND METHOD FOR PRODUCTION THEREOF |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5513604B2 (en) | Biaxially oriented metallized polylactic acid film with high metal adhesion and high barrier properties | |
JP4405120B2 (en) | Polylactic acid biaxially stretched laminated film with heat sealability | |
JP2004224051A (en) | Polyester film and method for producing the same | |
JP2003535732A (en) | Biaxially stretched coextruded white polyester film containing cycloolefin copolymer and having sealability and thermoformability, method for producing the same, and use thereof | |
JP2016203630A (en) | Biaxially oriented polyester film and manufacturing method therefor | |
JP4839012B2 (en) | Polyester film for in-mold molding | |
WO2015016111A1 (en) | Polyester sheet, molded article produced from polyester sheet, and card | |
JPH1110725A (en) | Polyester film for transparent deposition | |
JP2004224050A (en) | Polyester film and its manufacturing method | |
JP7444177B2 (en) | Biaxially oriented polyester films and laminates | |
US7141307B2 (en) | Extrusion-coatable polyester film comprising poly(m-xyleneadipamide) | |
JP2004224049A (en) | Polyester film and method for producing the same | |
JP2004224048A (en) | Polyester film and method for producing the same | |
JP2006192806A (en) | Polylactic acid-based stretched laminated film | |
JP2004244555A (en) | Sheet or film with excellent transparency and tearability | |
JP2003535734A (en) | Biaxially stretched coextruded white polyester film containing cycloolefin copolymer and having sealability, method for producing the same and use thereof | |
JP2009143111A (en) | Polylactic acid laminate oriented film and decorative paper using it | |
JP2006009025A (en) | Biaxially stretched polyester film and method for producing the same | |
JP7444178B2 (en) | Biaxially oriented polyester films and laminates | |
US20050287378A1 (en) | Metallized or ceramic-coated polyester films comprising poly(m-xyleneadipamide) | |
JP2002347109A (en) | Biaxially stretched polyester film for molding process and manufacturing method therefor | |
US20070160818A1 (en) | Biaxially stretched polyester film | |
JP7622527B2 (en) | Copolymer polyester sealant film | |
JP2004176042A (en) | White polyester film for molding container, and container | |
JP7622526B2 (en) | Copolymer polyester sealant film |