WO2023282030A1 - 金属板貼合せ用フィルム - Google Patents
金属板貼合せ用フィルム Download PDFInfo
- Publication number
- WO2023282030A1 WO2023282030A1 PCT/JP2022/024359 JP2022024359W WO2023282030A1 WO 2023282030 A1 WO2023282030 A1 WO 2023282030A1 JP 2022024359 W JP2022024359 W JP 2022024359W WO 2023282030 A1 WO2023282030 A1 WO 2023282030A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pigment
- film
- polyester resin
- resin layer
- mass
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 187
- 239000002184 metal Substances 0.000 title claims abstract description 187
- 238000010030 laminating Methods 0.000 title claims abstract description 76
- 229920001225 polyester resin Polymers 0.000 claims abstract description 184
- 239000004645 polyester resin Substances 0.000 claims abstract description 184
- 239000000049 pigment Substances 0.000 claims abstract description 157
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 73
- 239000012860 organic pigment Substances 0.000 claims abstract description 72
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 26
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 16
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 14
- 238000003475 lamination Methods 0.000 claims description 12
- 230000004580 weight loss Effects 0.000 claims description 10
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 claims description 9
- 235000013305 food Nutrition 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000010445 mica Substances 0.000 claims description 8
- 229910052618 mica group Inorganic materials 0.000 claims description 8
- DYRDKSSFIWVSNM-UHFFFAOYSA-N acetoacetanilide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1 DYRDKSSFIWVSNM-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- QRXDDLFGCDQOTA-UHFFFAOYSA-N cobalt(2+) iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Co+2].[O-2] QRXDDLFGCDQOTA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 169
- 239000010408 film Substances 0.000 description 144
- -1 acetoacetate anilide Chemical class 0.000 description 44
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 41
- 229910052737 gold Inorganic materials 0.000 description 41
- 239000010931 gold Substances 0.000 description 41
- 239000013585 weight reducing agent Substances 0.000 description 22
- 229920000728 polyester Polymers 0.000 description 21
- 238000000034 method Methods 0.000 description 20
- 239000000203 mixture Substances 0.000 description 18
- 239000003086 colorant Substances 0.000 description 16
- 239000010419 fine particle Substances 0.000 description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 description 15
- 239000005020 polyethylene terephthalate Substances 0.000 description 15
- 230000008859 change Effects 0.000 description 13
- 239000002932 luster Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 229920001707 polybutylene terephthalate Polymers 0.000 description 12
- 238000012545 processing Methods 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 8
- 239000000975 dye Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229920006267 polyester film Polymers 0.000 description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 7
- 235000010215 titanium dioxide Nutrition 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 150000002009 diols Chemical class 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- MZZSDCJQCLYLLL-UHFFFAOYSA-N Secalonsaeure A Natural products COC(=O)C12OC3C(CC1=C(O)CC(C)C2O)C(=CC=C3c4ccc(O)c5C(=O)C6=C(O)CC(C)C(O)C6(Oc45)C(=O)OC)O MZZSDCJQCLYLLL-UHFFFAOYSA-N 0.000 description 4
- GLLRIXZGBQOFLM-UHFFFAOYSA-N Xanthorin Natural products C1=C(C)C=C2C(=O)C3=C(O)C(OC)=CC(O)=C3C(=O)C2=C1O GLLRIXZGBQOFLM-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000005259 measurement Methods 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
- 229920000642 polymer Polymers 0.000 description 4
- 238000001028 reflection method Methods 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 239000001361 adipic acid Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- 239000007809 chemical reaction catalyst Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000005001 laminate film Substances 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000005029 tin-free steel Substances 0.000 description 3
- 150000003609 titanium compounds Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000972773 Aulopiformes Species 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241000227653 Lycopersicon Species 0.000 description 2
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 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
- 239000012298 atmosphere Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 150000002291 germanium compounds Chemical class 0.000 description 2
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000019515 salmon Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 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 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- INNSZZHSFSFSGS-UHFFFAOYSA-N acetic acid;titanium Chemical compound [Ti].CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O INNSZZHSFSFSGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- YJVBLROMQZEFPA-UHFFFAOYSA-L acid red 26 Chemical compound [Na+].[Na+].CC1=CC(C)=CC=C1N=NC1=C(O)C(S([O-])(=O)=O)=CC2=CC(S([O-])(=O)=O)=CC=C12 YJVBLROMQZEFPA-UHFFFAOYSA-L 0.000 description 1
- UVCQMCCIAHQDAF-GYOQZRFSSA-N alpha-Bacterioruberin Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C=C(C)/C=C/C(CCC(C)(C)O)C(C)(C)O)C=CC=C(/C)C=CC=C(/C)C=CC(CCC(C)(C)O)C(C)(C)O UVCQMCCIAHQDAF-GYOQZRFSSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 1
- 150000001463 antimony compounds Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- VPWFPZBFBFHIIL-UHFFFAOYSA-L disodium 4-[(4-methyl-2-sulfophenyl)diazenyl]-3-oxidonaphthalene-2-carboxylate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)C1=CC(C)=CC=C1N=NC1=C(O)C(C([O-])=O)=CC2=CC=CC=C12 VPWFPZBFBFHIIL-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002697 manganese compounds Chemical class 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 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 1
- CLDVQCMGOSGNIW-UHFFFAOYSA-N nickel tin Chemical compound [Ni].[Sn] CLDVQCMGOSGNIW-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- INSMTPGKSPJTMC-UHFFFAOYSA-N oxygen(2-) titanium(4+) Chemical compound [O-2].[O-2].[Ti+4].[Ti+4].[Ti+4] INSMTPGKSPJTMC-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/23—Azo-compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/357—Six-membered rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
- B32B2264/1026—Mica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/12—Mixture of at least two particles made of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/40—Pretreated particles
- B32B2264/401—Pretreated particles with inorganic substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Definitions
- the present invention relates to a film for laminating metal plates.
- metal plates made of tin, tin-free steel, aluminum, etc. are laminated with a polyester film, and then a metal plate laminated with a polyester film (hereafter referred to as a "laminated metal plate”).
- laminated metal plate There is known a method of producing a molded product such as a can by molding (see Patent Documents 1 and 2, for example). This method has the advantage of being able to simplify the process, that is, to reduce the number of man-hours, compared to the case of painting a metal plate to prevent corrosion.
- a colored polyester film is sometimes laminated to a metal plate (see Patent Document 1, for example).
- the gold hue is a yellowish hue that gives glossiness. That is, it has a glossy yellow color.
- Patent Document 1 describes that a polyester film colored with an organic pigment was produced, but organic pigments generally have lower heat resistance than inorganic pigments. Therefore, for this polyester film, the upper limit of possible temperature for retort treatment (for example, heat treatment for sterilizing food and drink in molded articles) may be affected by organic pigments. In other words, if an organic pigment is used as a colorant, there may be a limit to the improvement in possible temperature for retort processing. In addition, if an organic pigment is used as a coloring agent together with a resin having a high melting point, sublimation or fading of the organic pigment may occur during the process of producing a film for laminating metal plates, for example, extrusion molding.
- the present invention makes it possible to expand the range of colorants to be selected (for example, inorganic pigments can be used), and furthermore, makes it possible to impart a gold tint to laminated metal sheets and molded articles.
- An object of the present invention is to provide a film for laminating metal plates.
- the present invention has the configuration of item 1 below.
- a film for laminating metal plates comprising a polyester resin layer (A),
- the polyester resin layer (A) contains a pigment, the pigment contains at least one of an inorganic pigment and an organic pigment, and a pearl pigment,
- the film for laminating metal plates has an a * value of ⁇ 5 to 20 and a b * value of 0 to 50.
- the a * value and the b * value are determined by attaching the metal plate bonding film to a black standard plate (specifically, a black glass BK-7 standard plate (for backing)) through deionized water. After that, it is a value measured by a reflection method using a color difference meter (300A manufactured by Nippon Denshoku Industries Co., Ltd.).
- the a * value of the film for laminating metal plates is -5 to 20, and the b * value is 0 to 50, and the polyester resin layer (A) contains a pearl pigment, so that the colorant
- the metal plate laminated with the metal plate bonding film that is, the laminated metal plate
- the metal plate laminated with the metal plate bonding film can have a gold tint.
- the polyester resin layer (A) contained an inorganic pigment but did not contain a pearl pigment, it would be difficult to give the laminated metal sheet a gold tint. This is because the voids caused by the inorganic pigments increase the haze of the film for bonding metal plates and reduce the total light transmittance, so that the metallic luster of the metal plates cannot be effectively utilized.
- the polyester resin layer (A) contains an inorganic pigment
- the luster of the pearl pigment allows the laminated metal sheet to have a gold tint.
- the polyester resin layer (A) contains the pearl pigment, it becomes possible to use an inorganic pigment. That is, it is possible to widen the range of selection of colorants.
- the polyester resin layer (A) contains an organic pigment, it is of course possible to impart a gold hue to the laminated metal sheet.
- the polyester resin layer (A) contains a pearl pigment, it is possible to impart a pearly feel to the gold hue of the laminated metal sheet. That is, a pearly luster can be imparted to the gold hue. Furthermore, since the polyester resin layer (A) contains a pearl pigment, compared to the case where white titanium oxide (specifically, white titanium dioxide) is contained instead of the pearl pigment, the inorganic pigment and / or It is also possible to reduce the amount of organic pigments. That is, compared to the case (specifically, the case where the titanium oxide pigment is contained instead of the pearl pigment), the amount of the inorganic pigment and/or the organic pigment is smaller than that in the case of giving the laminated metal sheet a gold tint. can be done.
- white titanium oxide specifically, white titanium dioxide
- the present invention further include the following configurations from item 2 onwards.
- Item 2 Item 1.
- Gs 85 is 85 degree specular gloss
- Gs 45 is 45 degree specular gloss
- Gs 60 is 60 degree specular gloss.
- Gs 85 , Gs 45 and Gs 60 adhere the metal plate bonding film to a black standard plate (specifically, a black glass BK-7 standard plate (for backing)) via deionized water. It is a value measured using a gloss meter (manufactured by Nippon Denshoku Industries Co., Ltd.).
- Gar is an index of pearliness, ie pearl luster. As Gar increases, the laminated metal sheet obtained by laminating the film for bonding metal sheets to a metal sheet tends to have a stronger pearly appearance.
- Item 3 The film for bonding metal plates according to Item 1 or 2, wherein the pearl pigment has an average major axis of 5 ⁇ m to 80 ⁇ m.
- the average major axis of the pearl pigment is 5 ⁇ m or more, voids generated around the pearl pigment due to stretching during extrusion molding can be reduced. Since the average major axis of the pearl pigment is 80 ⁇ m or less, troubles in producing the film for laminating metal plates can be reduced. For example, when extrusion molding is performed to prepare the polyester resin layer (A), the stability of extrusion molding can be improved.
- the pearl pigment comprises mica and an oxide coating the mica, wherein the oxide is selected from the group consisting of anatase-type titanium oxide, rutile-type titanium oxide, iron oxide, silicon oxide, and cobalt iron oxide.
- Item 4 The film for metal plate lamination according to any one of Items 1 to 3, which is at least one.
- the pearl pigment contains mica, it has excellent mechanical strength, and as a result, for example, it is possible to suppress the pearl pigment from being destroyed during the production process of a film for laminating metal plates.
- the oxide coating the mica is at least one selected from the group consisting of anatase-type titanium oxide, rutile-type titanium oxide, iron oxide, silicon oxide, and cobalt iron oxide, the gold of the laminated metal sheet is A pearl feeling can be effectively imparted to the color.
- they have excellent physical and chemical stability, so that, for example, the stability of gold shades in laminated metal sheets over time can also be increased.
- Item 5 The film for metal plate lamination according to any one of items 1 to 4, wherein the content of the pearl pigment is 0.02% by mass to 10% by mass based on 100% by mass of the polyester resin layer (A).
- the laminated metal sheet can effectively have a gold hue, and the gold hue of the laminated metal sheet has a pearly feel. can be given more. Since the content of the pearl pigment is 10% by mass or less, it is possible to reduce changes in color tone due to retort processing and changes in haze due to retort processing. In addition, troubles in producing the film for laminating metal plates can be reduced. For example, when stretching is performed to produce a film for laminating metal plates, breakage of the film that may occur during stretching can be suppressed or reduced. That is, the film formability can be improved.
- Item 6 The film for metal plate bonding according to any one of Items 1 to 5, wherein the pigment of the polyester resin layer (A) contains the inorganic pigment.
- the pigment of the polyester resin layer (A) contains an inorganic pigment and a pearl pigment, compared to the case where only an organic pigment and a pearl pigment are contained, the color change due to retort treatment and the haze due to retort treatment are reduced. change can be reduced. That is, retort resistance can be improved.
- the hiding power of the polyester resin layer (A) can be improved, so that the metal plate can reduce the influence of the tint on the tint of the laminated metal sheet. Therefore, it is possible to improve the degree of freedom in selecting the metal plate.
- the organic pigment is at least one selected from the group consisting of acetoacetate anilide-based azo pigments and quinacridone-based organic pigments, changes in hue due to retort processing and changes in haze due to retort processing are suppressed. can be reduced. That is, retort resistance can be improved.
- the inorganic pigment has a weight loss rate of less than 1.5% by mass when the temperature of the inorganic pigment is increased from room temperature to 300°C at a temperature increase rate of 10°C/min under a nitrogen atmosphere,
- the weight loss rate of the organic pigment is less than 1.5% by mass when the temperature of the organic pigment is increased from room temperature to 300°C at a temperature increase rate of 10°C/min in a nitrogen atmosphere,
- the weight loss rate of the pearl pigment is less than 1.5% by mass.
- Item 9 The film for bonding metal plates according to any one of Items 1 to 8, wherein the film has a color difference ⁇ E * of less than 10 before and after retort treatment at 130°C for 120 minutes.
- the color difference ⁇ E * is obtained by attaching the metal plate bonding film before and after the retort treatment to a black standard plate (specifically, a black glass BK-7 standard plate (for backing)) through deionized water. After that, using a color difference meter (300A manufactured by Nippon Denshoku Industries Co., Ltd.), it is a value calculated from the following formula based on L * , a * , and b * measured by a reflection method.
- ⁇ E * [( ⁇ L * ) 2 + ( ⁇ a * ) 2 + ( ⁇ b * ) 2 ] 1/2
- ⁇ L * difference in L * of film for metal plate bonding before and after retort treatment
- ⁇ a * difference in a * of film for metal plate bonding before and after retort treatment
- ⁇ b * metal plate bonding before and after retort treatment Difference in b * of films for
- the color difference ⁇ E * before and after retort treatment is less than 10, that is, the change in color due to retort treatment is not excessively large, so the laminated metal plate after retort treatment and its molded product also have a gold color. can have a tint of
- the polyester resin layer (B) contains substantially no pigment, Item 10.
- the polyester resin layer (B) does not substantially contain a pigment means that the polyester resin layer (B) contains no pigment at all, or that the polyester resin layer (B) contains It means that the pigment is contained in an amount of 0.01% by mass or less based on 100% by mass of the polyester resin layer (B).
- the film for laminating metal plates is provided with a polyester resin layer (B) that is in contact with the polyester resin layer (A) and contains substantially no pigment, for example, the polyester resin layer (A)
- the polyester resin layer (A) After laminating the metal plate so that it is in contact with the metal plate, it (that is, the laminated metal plate) is formed so that the film for laminating the metal plate is the inner surface (for example, can manufacturing), thereby forming a polyester resin layer
- the pigment contained in the polyester resin layer (A) can be prevented from migrating into the contents.
- the polyester resin layer (B) does not substantially contain a pigment, it is possible to further prevent the pigment from being mixed into the contents.
- the polyester resin layer (A) has a thickness of 5 ⁇ m to 50 ⁇ m
- the polyester resin layer (B) has a thickness of 0.5 ⁇ m to 15 ⁇ m
- Item 11 The film for laminating metal plates according to item 10.
- the polyester resin layer (A) has a thickness of 5 ⁇ m or more, the laminated metal sheet can have a gold tint. Since the thickness of the polyester resin layer (A) is 50 ⁇ m or less, it is possible to avoid excessive quality of the film for laminating metal plates and to reduce the production cost of the film for laminating metal plates. .
- the polyester resin layer (B) is 0.5 ⁇ m or more, for example, the polyester resin layer (A) is laminated on the metal plate so as to be in contact with the metal plate, and then the laminate (that is, the laminated metal plate) is By molding (for example, making a can) so that the film for laminating metal plates becomes the inner surface, the pigment contained in the polyester resin layer (A) is further prevented from migrating to the contents of the molded product (for example, a can). can do. Since the thickness of the polyester resin layer (B) is 15 ⁇ m or less, it is possible to avoid excessive quality of the film for laminating metal plates, and to reduce the production cost of the film for laminating metal plates. .
- the metal plate is a metal plate molded into a member constituting a container for food and drink, Used so that the film for laminating metal plates is arranged on the inner surface of the container, Item 12.
- the film for bonding metal plates according to any one of Items 1 to 11.
- Patent Document 2 describes a two-layer laminate film, it does not describe coloring the two-layer laminate film with a pearl pigment.
- the film for laminating metal sheets of the present invention it is possible to expand the range of choices of colorants (for example, it is possible to use inorganic pigments), and at the same time, it is possible to add gold to laminated metal sheets and molded products.
- colorants for example, it is possible to use inorganic pigments
- gold to laminated metal sheets and molded products.
- the a * value may be referred to as a * . That is, the terms a * value and a * are used synonymously. Therefore, a * can be rephrased as an a * value.
- the polyester resin may be referred to as polyester. That is, the term polyester resin and the term polyester are used synonymously. Therefore, polyester can be rephrased as a polyester resin.
- the film for metal plate lamination of this embodiment comprises a polyester resin layer (A) and a polyester resin layer (B) in contact with the polyester resin layer (A). That is, the film for metal plate lamination includes a polyester resin layer (A) and a polyester resin layer (B) laminated on the polyester resin layer (A).
- One of the two surfaces of the film for laminating metal plates is composed of the polyester resin layer (A).
- the other surface is composed of a polyester resin layer (B).
- polyester resin layer (A) contains a polyester resin and a pigment. That is, the polyester resin layer (A) can be composed of a polyester composition containing a polyester resin and a pigment.
- polyester resin examples include polyethylene terephthalate having ethylene terephthalate as a main repeating unit, polybutylene terephthalate having butylene terephthalate as a main repeating unit, and combinations thereof.
- polyethylene terephthalate and polybutylene terephthalate will be described in detail as representative examples of polyester.
- Polyethylene terephthalate is a polyester composed of terephthalic acid as a dicarboxylic acid component and ethylene glycol as a diol component. Polyethylene terephthalate is not limited to a homopolymer, and may be copolymerized with other components as long as the effects of the present invention are not impaired.
- the copolymer component of polyethylene terephthalate may be either an acid component or an alcohol component.
- copolymerized dicarboxylic acid components include aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and naphthalenedicarboxylic acid; aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and decanedicarboxylic acid; Group dicarboxylic acids and their ester-forming derivatives can be exemplified.
- diol components to be copolymerized examples include aliphatic diols such as butanediol and hexanediol, and alicyclic diols such as cyclohexanedimethanol. These may be used alone or in combination of two or more.
- the ratio of the copolymer component is preferably such that the resulting melting point of the polymer is in the range of 210 to 256°C, preferably 215 to 256°C, more preferably 220 to 256°C. If the melting point of the polymer is below the lower limit, the heat resistance will be poor.
- the intrinsic viscosity of polyethylene terephthalate is preferably 0.50-0.80, more preferably 0.54-0.75, and particularly preferably 0.57-0.70. If the intrinsic viscosity is less than the lower limit, it is difficult to obtain a film having mechanical strength that can be put to practical use.
- homopolyethylene terephthalate is preferable when particularly high heat resistance is required. Certain homopolyethylene terephthalates are preferred.
- Polybutylene terephthalate is a polyester composed of terephthalic acid as a dicarboxylic acid component and 1,4-butanediol as a diol component. This polyester preferably undergoes a solid phase polycondensation reaction after the melt polymerization reaction.
- the polybutylene terephthalate is not limited to a homopolymer, and may be copolymerized with other components as long as the effects of the present invention are not impaired, and the copolymerization component may be a dicarboxylic acid component or a diol component.
- copolymerized dicarboxylic acid components of polybutylene terephthalate include aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and naphthalenedicarboxylic acid, aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and decanedicarboxylic acid, and cyclohexanedicarboxylic acid.
- aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and naphthalenedicarboxylic acid
- aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and decanedicarboxylic acid
- cyclohexanedicarboxylic acid can be exemplified by alicyclic dicarboxylic acids such as Among these, isophthalic acid, 2,6-naphthalenedicarboxylic acid and adipic acid are preferred.
- copolymerized diol components include aliphatic diols such as ethylene glycol and hexanediol, and alicyclic diols such as cyclohexanedimethanol. These may be used alone or in combination of two or more.
- the proportion of the copolymer component depends on the type, it is the proportion that results in the melting point of the polymer being in the range of 180 to 223°C, preferably 200 to 223°C, more preferably 210 to 223°C. If the melting point of the polymer is less than the lower limit, the crystallinity of the polyester is low, resulting in poor heat resistance of the film.
- the intrinsic viscosity of polybutylene terephthalate is preferably 0.60-2.00, more preferably 0.80-1.70, and particularly preferably 0.85-1.50. If the intrinsic viscosity is less than the lower limit, it is difficult to obtain a film having a mechanical strength that can be put to practical use.
- the polyester resin contained in the polyester resin layer (A) the aforementioned polyethylene terephthalate or a mixture of polyethylene terephthalate and polybutylene terephthalate is preferable, and the aforementioned polyethylene terephthalate is more preferable.
- the aforementioned homopolyethylene terephthalate is preferable. That is, polyethylene terephthalate containing no or substantially no copolymer component is preferred.
- the polyester resin of the polyester resin layer (A) is homopolyethylene terephthalate, the heat resistance of the polyester resin layer (A) can be enhanced.
- the polyester resin of the polyester resin layer (A) is a mixture of polyethylene terephthalate and polybutylene terephthalate
- the mass ratio of polyethylene terephthalate and polybutylene terephthalate is preferably 100:0 to 30:70, and 70: 30 to 30:70 is more preferred, and 60:40 to 40:60 is particularly preferred.
- the shortest semi-crystallization time can be shortened, and the appearance after retort processing can be suppressed from discoloring to milky white in a spotted manner.
- transesterification catalysts include calcium compounds, manganese compounds, germanium compounds and titanium compounds.
- Preferred examples of polycondensation reaction catalysts include antimony compounds, aluminum compounds, germanium compounds and titanium compounds.
- titanium compounds such as titanium acetate and tetrabutoxytitanium are preferable because the amount of catalyst can be minimized.
- the polyester resin preferably contains a stabilizer.
- a stabilizer such as trimethyl phosphate.
- the pigment of the polyester resin layer (A) contains at least one of an inorganic pigment and an organic pigment. That is, the polyester resin layer (A) contains at least one of an inorganic pigment and an organic pigment. According to this, the polyester resin layer (A) can be effectively colored.
- the pigments of the polyester resin layer (A) may contain only inorganic pigments, may contain only organic pigments, or may contain both. Especially, it is preferable that the pigment of the polyester resin layer (A) contains only an inorganic pigment among inorganic pigments and organic pigments. According to this, compared with the case where the pigment of the polyester resin layer (A) contains only an organic pigment among inorganic pigments and organic pigments, the change in color tone due to retort treatment and the change in haze due to retort treatment are reduced. be able to. That is, retort resistance can be improved.
- the hiding power of the polyester resin layer (A) is improved. Therefore, the influence of the tint of the metal plate on the tint of the laminated metal plate can be reduced. Therefore, it is possible to improve the degree of freedom in selecting the metal plate.
- inorganic pigments examples include red inorganic pigments and yellow inorganic pigments.
- Red inorganic pigments include, for example, red iron oxide, vermilion, and cadmium red.
- yellow pigments include yellow lead, ocher, and cadmium yellow.
- Inorganic pigments may be, for example, natural mineral pigments or synthetic inorganic pigments.
- C.I.” As a color index of inorganic pigments (hereinafter referred to as "C.I.”), for example, C.I. I. Pigment Red 101, 122, 259, 285, 290; C.I. I. Pigment Blue 73; C.I. I.
- the weight loss rate of the inorganic pigment in a nitrogen atmosphere is preferably less than 1.5% by mass.
- the weight reduction rate is preferably 1.0% by mass or less, more preferably 0.5% by mass or less.
- the weight reduction rate may be 0.01% by mass or more, 0.03% by mass or more, or 0.05% by mass or more.
- the “weight reduction rate” is specifically the weight reduction rate of the inorganic pigment when the temperature of the inorganic pigment is increased from room temperature to 300° C. at a heating rate of 10° C./min under a nitrogen atmosphere.
- the value of the weight loss rate is a value calculated by measuring by the method described in Examples.
- the content of the inorganic pigment is preferably 0.02% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more in 100% by mass of the polyester resin layer (A). When it is 0.02% by mass or more, the polyester resin layer (A) can be colored more effectively.
- the content of the inorganic pigment is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, still more preferably 3.0% by mass or less, and 2.0% by mass in 100% by mass of the polyester resin layer (A). % by mass or less is more preferable, and 1.0% by mass or less is even more preferable. When it is 5.0% by mass or less, deterioration of dispersion of the inorganic pigment can be reduced or suppressed, and deterioration of film formability can be reduced or suppressed.
- organic pigments examples include azo pigments such as acetoacetic anilide-based azo pigments and quinacridone pigments (that is, quinacridone-based organic pigments). Among them, acetoacetic anilide-based azo pigments and quinacridone-based organic pigments are preferable. These organic pigments can reduce changes in color tone and haze due to retort treatment. That is, retort resistance can be improved.
- the acetoacetic anilide-based azo pigment is a pigment represented by the following structural formula (1)
- the quinacridone-based organic pigment is a pigment represented by the following structural formula (2).
- the acetoacetanilide-based azo pigment and the quinacridone-based organic pigment preferably have a red or yellow color. Specific examples of these include compounds represented by the following structural formulas (3) to (6).
- the weight loss rate of the organic pigment under a nitrogen atmosphere is preferably less than 1.5% by mass.
- the weight reduction rate is preferably 1.0% by mass or less, more preferably 0.5% by mass or less.
- the weight reduction rate may be 0.01% by mass or more, 0.03% by mass or more, or 0.05% by mass or more.
- the "weight reduction rate” is specifically the weight reduction rate of the organic pigment when the organic pigment is heated from room temperature to 300°C at a temperature elevation rate of 10°C/min under a nitrogen atmosphere.
- the value of the weight reduction rate is a calculated value measured by the method described in Examples.
- the content of the organic pigment is preferably 0.02% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more in 100% by mass of the polyester resin layer (A). When it is 0.02% by mass or more, the polyester resin layer (A) can be colored more effectively.
- the content of the organic pigment is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, further preferably 3.0% by mass or less, and 2.0% by mass in 100% by mass of the polyester resin layer (A). % by mass or less is more preferable, and 1.0% by mass or less is even more preferable.
- the deterioration of the dispersion of the organic pigment can be reduced or suppressed, and the deterioration of the film formability can be reduced or suppressed. Additionally, bleed-out of organic pigments can be reduced or suppressed.
- the total content of the inorganic pigment and the organic pigment is preferably 0.02% by mass or more in 100% by mass of the polyester resin layer (A), and 0 0.1% by mass or more is more preferable, and 0.2% by mass or more is even more preferable.
- the polyester resin layer (A) can be colored more effectively.
- the total content of the inorganic pigment and the organic pigment is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably 3.0% by mass or less in 100% by mass of the polyester resin layer (A). , is more preferably 2.0% by mass or less, and more preferably 1.0% by mass or less. When it is 5.0% by mass or less, deterioration of dispersion of inorganic pigments and organic pigments can be reduced or suppressed, and deterioration of film formability can be reduced or suppressed.
- the pigment of the polyester resin layer (A) further contains a pearl pigment. Since the polyester resin layer (A) contains a pearlescent pigment, it is possible to impart a pearly feel to the gold hue of the laminated metal sheet. That is, a pearly luster can be imparted to the gold hue. Furthermore, since the polyester resin layer (A) contains a pearl pigment, compared to the case where white titanium oxide (specifically, white titanium dioxide) is contained instead of the pearl pigment, the inorganic pigment and / or It is also possible to reduce the amount of organic pigments.
- white titanium oxide specifically, white titanium dioxide
- the amount of the inorganic pigment and/or the organic pigment is smaller than that in the case of giving the laminated metal sheet a gold tint. can be done.
- the pearl pigment preferably comprises a substrate and a coating substance that coats the substrate.
- Mica is preferred as the substrate.
- the base material is mica, it has excellent mechanical strength, and as a result, for example, it is possible to suppress breakage of the pearl pigment during the production process of a film for laminating metal plates.
- oxides are preferred as coating materials. Preferred oxides are, for example, anatase-type titanium oxide, rutile-type titanium oxide, iron oxide, silicon oxide, and cobalt iron oxide. When the oxides are these, it is possible to effectively impart a pearly feel to the gold hue of the laminated metal sheet. In addition, they have excellent physical and chemical stability, so that, for example, the stability of gold shades in laminated metal sheets over time can also be increased.
- the pearl pigment preferably has a plate shape.
- the thickness of the pearl pigment is preferably 0.01 ⁇ m or more. When it is 0.01 ⁇ m or more, it is possible to suppress or reduce the breakage of the pearl pigment during the production process of the film for laminating metal plates.
- the thickness of the pearl pigment is preferably 10 ⁇ m or less. When the thickness is 10 ⁇ m or less, the gold hue of the laminated metal sheet can be further imparted with a pearly feel.
- the average length of the pearl pigment is preferably 5 ⁇ m to 80 ⁇ m.
- the thickness is 5 ⁇ m or more, voids generated around the pearl pigment due to stretching during extrusion molding can be reduced. If the thickness is 80 ⁇ m or less, troubles in producing the film for laminating metal plates can be reduced. For example, when extrusion molding is performed to prepare the polyester resin layer (A), the stability of extrusion molding can be improved.
- the weight loss rate of the pearl pigment under a nitrogen atmosphere is preferably less than 1.5% by mass. Since the weight reduction rate is less than 1.5% by mass, the pearl pigment has excellent heat resistance, and as a result, it is possible to reduce changes in color tone and haze due to retort treatment. That is, retort resistance can be improved.
- the weight reduction rate is preferably 1.0% by mass or less, more preferably 0.5% by mass or less.
- the weight reduction rate may be 0.01% by mass or more, 0.03% by mass or more, or 0.05% by mass or more.
- the "weight reduction rate" is specifically the weight reduction rate of the pearl pigment when the pearl pigment is heated from room temperature to 300°C at a temperature elevation rate of 10°C/min in a nitrogen atmosphere.
- the value of the weight reduction rate is a calculated value measured by the method described in Examples.
- the content of the pearl pigment is preferably 0.02% by mass or more, more preferably 0.1% by mass or more, further preferably 0.5% by mass or more, and 1.0% by mass in 100% by mass of the polyester resin layer (A). It is more preferably 1.5% by mass or more, more preferably 1.5% by mass or more.
- the content is 0.02% by mass or more, the laminated metal sheet can effectively have a gold hue, and the gold hue of the laminated metal sheet can be further imparted with a pearly feel.
- the content of the pearl pigment is preferably 10% by mass or less, more preferably 8.0% by mass or less, further preferably 5.0% by mass or less, and 3.5% by mass in 100% by mass of the polyester resin layer (A).
- the following are more preferable, and 3.0% by mass or less is even more preferable. If it is 10% by mass or less, it is possible to reduce changes in color tone due to retort processing and changes in haze due to retort processing. In addition, troubles in producing the film for laminating metal plates can be reduced. For example, when stretching is performed to produce a film for laminating metal plates, breakage of the film that may occur during stretching can be suppressed or reduced. That is, the film formability can be improved.
- the content of the pearl pigment may be the same as the content of the inorganic pigment, may be greater than the content of the inorganic pigment, or may be less than the content of the inorganic pigment.
- the content of the pearl pigment is preferably higher than the content of the inorganic pigment.
- the content of the pearl pigment may be the same as the content of the organic pigment, may be greater than the content of the organic pigment, or may be less than the content of the organic pigment.
- the content of the pearl pigment is preferably higher than the content of the organic pigment.
- the content of the pearl pigment may be the same as the total content of the inorganic pigment and the organic pigment, may be greater than the total content, or may be less than the total content.
- the content of the pearl pigment is preferably greater than the total content.
- the polyester resin layer (A) may further contain other pigments.
- the total amount of the inorganic pigment and the pearl pigment is preferably 80% by mass or more, more preferably 90% by mass or more, based on 100% by mass of the pigment. 95% by mass or more is more preferable, and 100% by mass or more is even more preferable.
- the retort resistance of the film for metal plate lamination can be improved as it is 80 mass % or more.
- the polyester resin layer (A) may further contain other additives.
- Other additives may include, for example, dyes, particulates, stabilizers (such as the stabilizers described above).
- the polyester resin layer (A) preferably contains no dye.
- the fine particles preferably have an average particle size of 2.5 ⁇ m or less, more preferably 0.01 ⁇ m to 1.8 ⁇ m.
- the content of fine particles is preferably 0.01 to 1 part by mass, more preferably 0.01 to 0.5 part by mass, with respect to 100 parts by mass of the polyester resin.
- inorganic fine particles or organic fine particles may be used as the fine particles, but inorganic fine particles are preferably used.
- inorganic fine particles include silica, alumina, titanium dioxide, calcium carbonate, and barium sulfate.
- organic fine particles include crosslinked polystyrene particles and crosslinked silicone resin particles.
- the average particle diameter of fine particles is preferably 2.5 ⁇ m or less. When the thickness is 2.5 ⁇ m or less, the generation of pinholes can be suppressed.
- Particularly preferable microparticles in terms of pinhole resistance are monodisperse microparticles having an average particle size of 2.5 ⁇ m or less and a particle size ratio (major axis/minor axis) of 1.0 to 1.2.
- the fine particles include spherical silica, spherical titanium dioxide, spherical zirconium, and spherical crosslinked silicone resin particles.
- the thickness of the polyester resin layer (A) is preferably 5 ⁇ m or more, more preferably 10 ⁇ m or more. When the thickness of the polyester resin layer (A) is 5 ⁇ m or more, the laminated metal sheet can have a more gold hue.
- the thickness of the polyester resin layer (A) is preferably 50 ⁇ m or less, more preferably 40 ⁇ m or less, still more preferably 30 ⁇ m or less, and even more preferably 25 ⁇ m or less. When the thickness of the polyester resin layer (A) is 50 ⁇ m or less, it is possible to avoid excessive quality of the film for laminating metal plates, and to reduce the production cost of the film for laminating metal plates. .
- polyester resin layer (B) The film for metal plate lamination is equipped with a polyester resin layer (B). Since the film for laminating metal plates includes the polyester resin layer (B), for example, after laminating the polyester resin layer (A) on the metal plate so as to be in contact with the metal plate, it (that is, the laminated metal plate) is By molding (for example, can manufacturing) so that the film for laminating metal plates becomes the inner surface, the polyester resin layer (A) becomes the contents of the molded article (for example, can) (for example, food and drink such as tomatoes, pickles, and salmon). can be prevented from touching As a result, the pigment contained in the polyester resin layer (A) can be prevented from migrating into the contents.
- the polyester resin layer (A) for example, after laminating the polyester resin layer (A) on the metal plate so as to be in contact with the metal plate, it (that is, the laminated metal plate) is By molding (for example, can manufacturing) so that the film for laminating metal plates becomes the inner surface, the polyester resin layer
- the polyester resin layer (B) contains a polyester resin. That is, the polyester resin layer (A) can be composed of a polyester composition containing a polyester resin.
- the polyester resin contained in the polyester resin layer (B) is omitted because it overlaps with the description of the polyester resin contained in the polyester resin layer (A). Therefore, the description of the polyester resin contained in the polyester resin layer (A) can also be treated as the description of the polyester resin contained in the polyester resin layer (B).
- the polyester resin contained in the polyester resin layer (B) is preferably the polyethylene terephthalate described above, and more preferably the homopolyethylene terephthalate described above. When the polyester resin of the polyester resin layer (B) is homopolyethylene terephthalate, the heat resistance of the polyester resin layer (B) can be enhanced.
- the polyester resin layer (B) does not substantially contain pigments. Since the polyester resin layer (B) does not substantially contain a pigment, it is possible to further prevent the pigment from being mixed into the contents.
- the above-mentioned "the polyester resin layer (B) does not substantially contain a pigment” means that the polyester resin layer (B) contains no pigment at all, or means that the pigment is contained in an amount of 0.01% by mass or less based on 100% by mass of the polyester resin layer (B).
- the polyester resin layer (B) preferably contains no pigment at all. Examples of pigments include organic pigments, inorganic pigments, and pearl pigments.
- the polyester resin layer (B) preferably contains substantially no dye.
- the polyester resin layer (B) does not contain a dye at all, or the polyester resin layer (B) contains 0.01% by mass or less of the dye in 100% by mass of the polyester resin layer (B). means that it contains at
- the polyester resin layer (B) preferably contains no dye at all.
- the polyester resin layer (B) preferably does not substantially contain a coloring agent (eg, pigment, dye).
- a coloring agent eg, pigment, dye
- the polyester resin layer (B) does not contain any colorant, or the polyester resin layer (B) contains 0.01 mass% of the colorant in 100 mass% of the polyester resin layer (B). % or less.
- the polyester resin layer (B) preferably does not contain any colorant.
- the polyester resin layer (B) may contain other additives.
- Other additives may include, for example, microparticles. Description of the fine particles of the polyester resin layer (B) is omitted because it overlaps with the description of the fine particles of the polyester resin layer (A). Therefore, the description of the fine particles of the polyester resin layer (A) can also be treated as the description of the fine particles of the polyester resin layer (B).
- the thickness of the polyester resin layer (B) is preferably 0.5 ⁇ m or more, more preferably 1.0 ⁇ m or more, still more preferably 2.0 ⁇ m or more, and even more preferably 3.0 ⁇ m or more. Since the thickness of the polyester resin layer (B) is 0.5 ⁇ m or more, for example, the polyester resin layer (A) is laminated on the metal plate so as to be in contact with the metal plate, and then the laminate (that is, the laminated metal plate) is By molding (for example, making a can) so that the film for laminating metal plates becomes the inner surface, the pigment contained in the polyester resin layer (A) is further prevented from migrating to the contents of the molded product (for example, a can). can do.
- the thickness of the polyester resin layer (B) is preferably 15 ⁇ m or less, more preferably 10 ⁇ m or less, and even more preferably 8 ⁇ m or less. Since the thickness of the polyester resin layer (B) is 15 ⁇ m or less, it is possible to avoid excessive quality of the film for laminating metal plates, and to reduce the production cost of the film for laminating metal plates. .
- the film for laminating metal plates has an a * value of ⁇ 5 to 20 and a b * value of 0 to 50. According to this, the a * value of the film for laminating metal plates is -5 to 20, and the b * value is 0 to 50, and the polyester resin layer (A) contains a pearl pigment, so that the coloring agent is not used.
- the range of selection can be expanded, and the metal plate laminated with the film for bonding metal plates (that is, the laminated metal plate) can have a gold tint. This will be explained. If the polyester resin layer (A) contained an inorganic pigment but did not contain a pearl pigment, it would be difficult to give the laminated metal sheet a gold tint.
- the voids caused by the inorganic pigments increase the haze of the film for bonding metal plates and reduce the total light transmittance, so that the metallic luster of the metal plates cannot be effectively utilized.
- the polyester resin layer (A) contains an inorganic pigment
- the luster of the pearl pigment allows the laminated metal sheet to have a gold tint.
- the polyester resin layer (A) contains the pearl pigment, it becomes possible to use an inorganic pigment. That is, it is possible to widen the range of selection of colorants.
- the a * value and b * value are values measured according to JIS Z 8722:2009, and specifically, values measured by the method described in Examples.
- the film for laminating metal plates satisfies the following formula.
- Gs 85 is 85 degree specular gloss
- Gs 45 is 45 degree specular gloss
- Gs 60 is 60 degree specular gloss.
- , that is, Gar is an index of pearliness, that is, an index of pearl luster. As Gar increases, the laminated metal sheet obtained by laminating the film for bonding metal sheets to a metal sheet tends to have a stronger pearly appearance.
- Gar since Gar is 1.6 or more, the gold tone of the laminated metal sheet can be further imparted with a pearly appearance.
- Gar may be, for example, 3.0 or less, or 2.5 or less.
- Gs 85 , Gs 45 , and Gs 60 are values measured according to JIS Z 8741:1997, specifically, values measured by the method described in Examples.
- Gs 85 of the film for laminating metal plates may be, for example, 50 or more, 55 or more, or 60 or more. Gs 85 may be, for example, 97 or less, 95 or less, or 90 or less.
- the total light transmittance of the film for laminating metal plates may be, for example, 50% or more, or 60% or more.
- the total light transmittance of the film for laminating metal plates may be, for example, 95% or less, or 90% or less.
- the total light transmittance is a value measured by the method described in Examples.
- the haze of the film for laminating metal plates may be, for example, 15% or more, 20% or more, or 25% or more.
- the haze of the film for laminating metal plates may be, for example, 90% or less, or 80% or less.
- the haze is a value measured by the method described in Examples.
- the color difference ⁇ E * before and after retorting at 130° C. for 120 minutes is preferably less than 10. According to this, since the color change due to the retort treatment is not excessively large, the laminated metal sheet after the retort treatment and the molded article thereof can also have a gold color.
- ⁇ E * is preferably 8 or less, more preferably 5 or less.
- ⁇ E * is a value measured by the method described in Examples.
- the haze change ⁇ Hz before and after retort treatment at 130°C for 120 minutes is preferably less than 15, more preferably 12 or less, and even more preferably 10 or less.
- the value of ⁇ Hz is a value measured and calculated by the method described in Examples.
- the thickness of the film for laminating metal plates is preferably 5.5 ⁇ m or more, more preferably 10 ⁇ m or more.
- the thickness of the film for laminating metal plates ie, the total thickness, is preferably 65 ⁇ m or less, more preferably 50 ⁇ m or less, even more preferably 40 ⁇ m or less, even more preferably 30 ⁇ m or less.
- the film for metal plate lamination is produced by, for example, supplying a polyester composition for forming a polyester resin layer (A) (hereinafter sometimes referred to as "polyester composition (A)") to a first extruder. Then, a polyester composition for forming the polyester resin layer (B) (hereinafter sometimes referred to as “polyester composition (B)”) is supplied to the second extruder, and then the first The polyester composition (A) is led from the extruder to the feedblock, and the polyester composition (B) is led from the second extruder to the feedblock, laminated in the feedblock, and then melt extruded through the die.
- the biaxial stretching may be simultaneous biaxial stretching in the vertical and horizontal directions, or sequential biaxial stretching.
- sequential biaxial stretching is preferable.
- sequential biaxial stretching for example, an unstretched film that has passed through cooling rolls is stretched in the machine direction (hereinafter referred to as "MD"), and the sheet after stretching in the MD is stretched in the transverse direction, that is, the transverse direction. (hereinafter referred to as “TD”) direction is preferred.
- MD machine direction
- TD transverse direction
- the stretching temperature in the MD direction, the stretching ratio in the MD direction, the stretching temperature in the TD direction, and the stretching ratio in the TD direction can be appropriately set.
- the method of blending the pigment is not particularly limited. For example, it may be blended in the manufacturing process (for example, polymerization process) of the raw material resin, or may be blended in the finished raw material resin using a melt kneader or the like. Master chips of a raw material resin containing a high concentration of pigment are prepared in advance using, for example, a twin-screw extruder, and are mixed with chips of a raw material resin containing no pigment or a low concentration of pigment to obtain the desired product. A polyester composition (eg, polyester resin layer (A)) containing a concentration of pigment may be prepared.
- the method using a master chip is preferable because it facilitates uniform dispersion and facilitates adjustment of the pigment content.
- the film for laminating metal plates can be used as a film for laminating on metal plates such as tin plate, tin-free steel, tin-nickel steel, and aluminum.
- a metal plate laminated with a film for laminating a metal plate, that is, a laminated metal plate can be molded. It is preferable that the metal plate is a metal plate that is formed into a member that constitutes a container for food and drink.
- the metal plate laminating film may be used so that the metal plate laminating film is arranged on the inner surface of the container, and it is used so that the metal plate laminating film is arranged on the outer surface of the container.
- the film for metal plate bonding is more preferably used so that the film for metal plate bonding is arranged on the inner surface of the container.
- a can is preferable as a container for food and drink.
- cans include beverage cans and food cans.
- members that constitute cans for food and drink include a body, a bottom lid, a lid, or any combination thereof.
- the film for laminating metal plates has a two-layer structure composed of the polyester resin layer (A) and the polyester resin layer (B).
- the embodiments described above are not limited to this configuration.
- the film for laminating metal plates may have a single-layer structure composed of a polyester resin layer (A).
- the film for laminating metal plates may include layers other than the polyester resin layer (A) and the polyester resin layer (B).
- one of the two surfaces of the film for laminating metal plates is preferably composed of the polyester resin layer (A).
- it is preferable that the other surface is composed of the polyester resin layer (B).
- the polyester resin layer (B) has substantially no pigment.
- the embodiments described above are not limited to this configuration.
- the polyester resin layer (B) may contain more than 0.01% by mass of pigment based on 100% by mass of the polyester resin layer (B).
- the pigment content of the polyester resin layer (B) is preferably less than the pigment content of the polyester resin layer (A).
- the configuration in which the film for laminating metal plates is a biaxially stretched film has been described.
- the configuration that the film for laminating metal plates is a biaxially oriented film has been described.
- the film for laminating metal plates may be an unstretched film or a uniaxially stretched film.
- Thickness of Each Layer A film sample of 2 mm in the longitudinal direction and 2 cm in the width direction was cut out from the biaxially oriented laminated film, fixed in an embedding capsule, and then embedded in an epoxy resin. Thin slices with a thickness of 50 ⁇ m were obtained by cutting the embedded film samples with a microtome (Supercut, Reichert-Jung) perpendicular to the width direction. This thin film slice was observed and photographed at an accelerating voltage of 20 kV using a scanning electron microscope (4300SE/N manufactured by Hitachi High-Tech), and the thickness of each layer was measured from the photographs. By this method, the average thickness of 5 points was obtained. The average thickness thus determined is shown in Tables 1 and 2 as the thickness of each layer.
- Intrinsic viscosity Intrinsic viscosity was measured at 35°C using o-chlorophenol.
- Total light transmittance and haze The total light transmittance and haze of a 5 cm square film sample cut out from the biaxially oriented laminated film were measured in accordance with JIS K 7136: 2000, using a haze meter manufactured by Nippon Denshoku Industries. Measured using NDH2000.
- Glossiness A 5 cm square film sample cut out from the biaxially oriented laminated film is applied to a black standard plate (specifically, a black glass BK-7 standard plate (for backing)) through deionized water. After being brought into close contact, the glossiness of the film sample was measured using a gloss meter (manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with JIS Z 8741: 1997, with an incident angle and a light receiving angle of 45 °, and a 45 ° mirror surface Gloss (ie Gs 45 ) was determined. In this procedure, the layer B of the film sample was brought into close contact with a black standard plate.
- a black standard plate specifically, a black glass BK-7 standard plate (for backing)
- ⁇ E * [( ⁇ L * ) 2 + ( ⁇ a * ) 2 + ( ⁇ b * ) 2 ] 1/2
- ⁇ L * difference in L * of film sample before and after retort treatment
- ⁇ a * difference in a * of film sample before and after retort treatment
- ⁇ b * difference in b * of film sample before and after retort treatment was evaluated according to the criteria of ⁇ : ⁇ E * is 5 or less ⁇ : ⁇ E * is more than 5 and less than 10 ⁇ : ⁇ E * is 10 or more
- the haze of the film samples before and after retort treatment was measured with a haze meter NDH2000 manufactured by Nippon Denshoku Industries.
- ⁇ Hz (haze after retort treatment) - (haze before retort treatment) ⁇ Hz was evaluated according to the following criteria. ⁇ : ⁇ Hz is 10 or less ⁇ : ⁇ Hz is over 10 and less than 15 ⁇ : ⁇ Hz is 15 or more
- Polyester resin for layer A Homopolyethylene terephthalate without copolymerization component having an intrinsic viscosity of 0.68 dl/g
- Polyester resin for layer B Same as above (i.e., homopolyethylene terephthalate without copolymerization component having an intrinsic viscosity of 0.68 dl/g)
- Pigment Yellow 214 an acetoacetate anilide-based azo pigment Organic pigment C C.I. Pigment Yellow 191.1, an organic pigment that is neither an acetoacetate anilide-based azo pigment nor a quinacridone-based organic pigment
- Pearl pigment A Gold-based, iron oxide and titanium oxide Base material is coated Pearl pigment B Gold type, base material is coated with iron oxide and titanium oxide Pearl pigment C Gold type, base material is coated with iron oxide and titanium oxide Titanium oxide Titanium white
- inorganic pigments specifically Inorganic pigments A to E
- organic pigments specifically, organic pigments A to C
- pearl pigments specifically pearl pigments A to C
- pearl pigments A to C are sometimes collectively referred to as color pigments.
- Pearl pigments (specifically pearl pigments A to C) and titanium oxide (specifically titanium white) are sometimes collectively referred to as luster pigments.
- a polyester composition for layer A specifically, a composition containing a polyester resin for layer A and a pigment was prepared. After drying the polyester composition for layer A and the polyester resin for layer B, the polyester composition for layer A is supplied to a first extruder heated to 270 ° C., and the polyester resin for layer B is It was fed into a second extruder heated to 270°C. The polyester composition for layer A is led from the first extruder to the feed block, the polyester resin for layer B is led from the second extruder to the feed block, these are laminated in the feed block, melt extruded from the die, and rotated Cooled in a cooling drum.
- the unstretched film prepared by this procedure was stretched 3.2 times in the machine direction at 85°C, then stretched 3.8 times in the transverse direction at 105°C, and heat-set at 200°C.
- a biaxially oriented laminate film having a thickness of 20 ⁇ m and comprising an A layer and a B layer was obtained.
- a biaxially oriented laminated film having a layer A containing only an inorganic pigment as a coloring agent could not impart a gold tint to a metal plate laminated with the biaxially oriented laminated film (that is, a laminated metal plate). (see Comparative Example 1).
- the biaxially oriented laminated film provided with the layer A containing the inorganic pigment and the pearl pigment was able to give the laminated metal plate a gold tint by adjusting a * and b * . It was also possible to impart a pearly effect to the shade (see Examples 1-8 and 10-12, see Comparative Example 3 if desired).
- a biaxially oriented laminated film comprising an A layer containing only an inorganic pigment and white titanium oxide (specifically titanium white) as a coloring agent could give the laminated metal sheet a gold tint. However, it was not possible to impart a pearly feel to the color (see Comparative Example 5).
- a biaxially oriented laminated film comprising an A layer containing an organic pigment together with a pearl pigment, by adjusting a * and b * , it was possible to give the laminated metal plate a gold tint, and the tint It was also possible to impart a pearly feel (see Example 9, see Comparative Example 4 if necessary).
- the biaxially oriented laminated film using the organic pigment B had a smaller change in haze due to retort treatment, that is, ⁇ E * than the biaxially oriented laminated film using the organic pigment C (Example 9 and Comparative See Example 4).
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Abstract
Description
ポリエステル樹脂層(A)を備える金属板貼合せ用フィルムであって、
前記ポリエステル樹脂層(A)が顔料を含有し、前記顔料が、無機顔料および有機顔料の少なくとも一方と、パール顔料とを含み、
前記金属板貼合せ用フィルムのa*値が-5~20、b*値が0~50である、
金属板貼合せ用フィルム。
ここで、a*値およびb*値は、金属板貼合せ用フィルムを、黒色標準板(具体的には、黒ガラスBK-7標準板(裏当て用))にイオン交換水を介して密着させたうえで、色差計(日本電色工業社製300A)を用い、反射法で測定される値である。
下記式を満足する、項1に記載の金属板貼合せ用フィルム。
|Gs85-Gs45|/|Gs85-Gs60|≧1.6
(この式において、Gs85は85度鏡面光沢であり、Gs45は45度鏡面光沢であり、Gs60は60度鏡面光沢である。)
ここで、Gs85、Gs45およびGs60は、金属板貼合せ用フィルムを黒色標準板(具体的には、黒ガラスBK-7標準板(裏当て用))にイオン交換水を介して密着させたうえで、光沢度計(日本電色工業社製)を用いて測定される値である。
前記パール顔料の平均長径が5μm~80μmである、項1または2に記載の金属板貼合せ用フィルム。
前記パール顔料が、雲母、および前記雲母を被覆する酸化物を備え、前記酸化物が、アナターゼ型酸化チタン、ルチル型酸化チタン、酸化鉄、酸化ケイ素、およびコバルト鉄酸化物からなる群より選ばれる少なくとも1種である、項1~3のいずれかに記載の金属板貼合せ用フィルム。
前記パール顔料の含有量が、前記ポリエステル樹脂層(A)100質量%中、0.02質量%~10質量%である、項1~4のいずれかに記載の金属板貼合せ用フィルム。
前記ポリエステル樹脂層(A)の前記顔料が前記無機顔料を含む、項1~5のいずれかに記載の金属板貼合せ用フィルム。
前記ポリエステル樹脂層(A)の前記顔料が前記有機顔料を含み、前記有機顔料が、アセト酢酸アニリド系アゾ顔料、およびキナクリドン系有機顔料からなる群より選ばれる少なくとも1種である、項1~6のいずれかに記載の金属板貼合せ用フィルム。
前記無機顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記無機顔料の重量減少率が1.5質量%未満であり、
前記有機顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記有機顔料の重量減少率が1.5質量%未満であり、
前記パール顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記パール顔料の重量減少率が1.5質量%未満である、
項1~7のいずれかに記載の金属板貼合せ用フィルム。
130℃で120分間のレトルト処理前後における色差ΔE*が10未満である、項1~8のいずれかに記載の金属板貼合せ用フィルム。
ここで、色差ΔE*は、レトルト処理前後の金属板貼合せ用フィルムを、黒色標準板(具体的には、黒ガラスBK-7標準板(裏当て用))にイオン交換水を介して密着させたうえで、色差計(日本電色工業社製300A)を用い、反射法で測定されるL*、a*、b*に基づいて、下記式より算出される値である。
ΔE*=[(ΔL*)2+(Δa*)2+(Δb*)2]1/2
ΔL*=レトルト処理前後での金属板貼合せ用フィルムのL*の差
Δa*=レトルト処理前後での金属板貼合せ用フィルムのa*の差
Δb*=レトルト処理前後での金属板貼合せ用フィルムのb*の差
前記ポリエステル樹脂層(A)に接するポリエステル樹脂層(B)をさらに備え、
前記ポリエステル樹脂層(B)が、顔料を実質的に含有していない、
項1~9のいずれかに記載の金属板貼合せ用フィルム。
ここで、「前記ポリエステル樹脂層(B)が、顔料を実質的に含有していない」は、ポリエステル樹脂層(B)が顔料をまったく含有していない、または、ポリエステル樹脂層(B)が、ポリエステル樹脂層(B)100質量%中、顔料を0.01質量%以下で含有することを意味する。
前記ポリエステル樹脂層(A)の厚みが5μm~50μmであり、
前記ポリエステル樹脂層(B)の厚みが0.5μm~15μmである、
項10に記載の金属板貼合せ用フィルム。
前記金属板が、飲食品用の容器を構成する部材に成形される金属板であり、
前記容器の内面に、前記金属板貼合せ用フィルムが配置されるように使用される、
項1~11のいずれかに記載の金属板貼合せ用フィルム。
本実施形態の金属板貼合せ用フィルムは、ポリエステル樹脂層(A)と、ポリエステル樹脂層(A)に接するポリエステル樹脂層(B)とを備える。すなわち、金属板貼合せ用フィルムは、ポリエステル樹脂層(A)と、ポリエステル樹脂層(A)に積層されたポリエステル樹脂層(B)とを備える。金属板貼合せ用フィルムの両面のうち、一方の面が、ポリエステル樹脂層(A)で構成されている。他方の面が、ポリエステル樹脂層(B)で構成されている。
ポリエステル樹脂層(A)は、ポリエステル樹脂および顔料を含有する。すなわち、ポリエステル樹脂層(A)は、ポリエステル樹脂および顔料を含有するポリエステル組成物で構成されていることができる。
ポリエチレンテレフタレートは、テレフタル酸をジカルボン酸成分、エチレングリコールをジオール成分としてなるポリエステルである。ポリエチレンテレフタレートはホモポリマーに限定されず、本発明の効果が損なわれない範囲で他の成分を共重合してもよく、共重合することによって成形加工性をより向上させやすくなる。
ポリブチレンテレフタレートは、テレフタル酸をジカルボン酸成分、1,4-ブタンジオールをジオール成分としてなるポリエステルである。このポリエステルは、好ましくは溶融重合反応後に固相重縮合反応されたものを用いる。
金属板貼合せ用フィルムは、ポリエステル樹脂層(B)を備える。金属板貼合せ用フィルムがポリエステル樹脂層(B)を備えるため、たとえば、ポリエステル樹脂層(A)を金属板に接するように金属板にラミネートをしたうえで、それ(すなわちラミネート金属板)を、金属板貼合せ用フィルムが内面となるように成形(たとえば製缶)することによって、ポリエステル樹脂層(A)が、成形品(たとえば缶)の内容物(たとえばトマト、ピクルス、サーモンといった飲食物)に触れることを防止することができる。その結果、ポリエステル樹脂層(A)に含まれる顔料が、内容物に移行することを防止することができる。
金属板貼合せ用フィルムは、a*値が-5~20、b*値が0~50である。これによれば、金属板貼合せ用フィルムのa*値が-5~20、b*値が0~50であるうえに、ポリエステル樹脂層(A)がパール顔料を含有するため、着色剤の選択の幅を広げることができるとともに、金属板貼合せ用フィルムがラミネートされた金属板(すなわち、ラミネート金属板)に、ゴールドの色合いを持たせることができる。これについて説明する。仮に、ポリエステル樹脂層(A)が、無機顔料を含有したうえでパール顔料を含有しなかったとすると、ラミネート金属板に、ゴールドの色合いを持たせることは難しい。なぜなら、無機顔料に起因するボイドによって、金属板貼合せ用フィルムのヘーズが増大し、全光線透過率が低下するので、金属板の金属光沢を効果的に利用することができないためである。項1によれば、ポリエステル樹脂層(A)が無機顔料を含有する場合でも、パール顔料の光沢によって、ラミネート金属板にゴールドの色合いを持たせることができる。このように、ポリエステル樹脂層(A)がパール顔料を含有するため、無機顔料を使用することが可能となる。つまり、着色剤の選択の幅を広げることができる。なお、a*値およびb*値は、JIS Z 8722:2009に準拠して測定される値であり、具体的には、実施例に記載の方法で測定される値である。
|Gs85-Gs45|/|Gs85-Gs60|≧1.6
この式において、Gs85は85度鏡面光沢であり、Gs45は45度鏡面光沢であり、Gs60は60度鏡面光沢である。
|Gs85-Gs45|/|Gs85-Gs60|、すなわち、Garは、パール感の指標、すなわち真珠光沢の指標である。Garが大きい程、金属板貼合せ用フィルムを金属板にラミネートして得られるラミネート金属板のパール感が強い傾向がある。上記式によれば、Garが1.6以上であるため、ラミネート金属板のゴールドの色合いにパール感をいっそう付与することができる。Garは、たとえば、3.0以下であってもよく、2.5以下であってもよい。なお、Gs85、Gs45、Gs60は、JIS Z 8741:1997に準拠して測定される値であり、具体的には、実施例に記載の方法で測定される値である。
金属板貼合せ用フィルムは、たとえば、ポリエステル樹脂層(A)を形成するためのポリエステル組成物(以下、「ポリエステル組成物(A)」と言うことがある。)を第一の押出機に供給するとともに、ポリエステル樹脂層(B)を形成するためのポリエステル組成物(以下、「ポリエステル組成物(B)」と言うことがある。)を第二の押出機に供給し、次いで、第一の押出機からフィードブロックにポリエステル組成物(A)を導くとともに、第二の押出機からポリエステル組成物(B)をフィードブロックに導き、フィードブロックでこれらを積層し、次いで、これをダイから溶融押出しし、次いで、これを冷却ロールで固化し、これを二軸延伸する、という手順で作製することができる。二軸延伸は、縦横同時二軸延伸であってもよく、逐次二軸延伸であってもよい。なかでも、逐次二軸延伸が好ましい。逐次二軸延伸では、たとえば、冷却ロールを経た未延伸フィルムを、縦方向すなわちMachine Direction(以下、「MD」と言う。)方向に延伸し、MD方向延伸後のシートを、横方向すなわちTransverse Direction(以下、「TD」と言う。)方向に延伸することが好ましい。MD方向の延伸温度、MD方向の延伸倍率、TD方向の延伸温度、およびTD方向の延伸倍率は適宜設定することができる。
金属板貼合せ用フィルムは、ブリキ、ティンフリースチール、ティンニッケルスチール、アルミニウムなどの金属板にラミネートするためのフィルムとして使用することができる。金属板貼合せ用フィルムがラミネートされた金属板、すなわちラミネート金属板は、成形加工されることができる。金属板が、飲食品用の容器を構成する部材に成形される金属板であることが好ましい。金属板貼合せ用フィルムは、容器の内面に、金属板貼合せ用フィルムが配置されるように使用されてもよく、容器の外面に、金属板貼合せ用フィルムが配置されるように使用されてもよい。なかでも、金属板貼合せ用フィルムは、容器の内面に、金属板貼合せ用フィルムが配置されるように使用されることがより好ましい。飲食品用の容器としては缶が好ましい。缶として、たとえば飲料缶や食品缶などを挙げることができる。飲食品用の缶を構成する部材とは、たとえば、胴、底ふた、ふた、またはこれらの任意の組み合わせを挙げることができる。
上述の実施形態には、種々の変更を加えることができる。たとえば、以下の変形例から、一つまたは複数を選択して、上述の実施形態に変更を加えることができる。
(1)各層の厚み
二軸配向積層フィルムから、長手方向2mm、幅方向2cmのフィルムサンプルを切り出し、これを包埋カプセルに固定したうえで、エポキシ樹脂で包埋した。包埋されたフィルムサンプルをミクロトーム(Reichert-Jung製Supercut)で、幅方向に垂直に切断することによって50μm厚の薄膜切片を得た。この薄膜切片を、走査型電子顕微鏡(日立ハイテク製4300SE/N)を用いて、加速電圧20kVにて観察撮影し、写真から各層の厚みを測定した。この手法で、5点の平均厚みを求めた。このようにして求めた平均厚みを、各層の厚みとして表1および2に示す。
固有粘度は、o-クロロフェノールを用いて、35℃で測定した。
二軸配向積層フィルムから切り出したフィルムサンプルについて、示差走査熱量計DSC(TAInstruments製Q100)を用い、昇温速度20℃/分でフィルムサンプルの融解ピーク温度を求めた。なお、サンプル量は約20mgとした。
熱重量分析計TGA(TAInstruments製Q50)を用い、大気雰囲気下(大気流量60mL/min.)で30℃から昇温速度10℃/min.で300℃まで温度変更後、さらに300℃で30分間保持し、顔料の重量変化量から重量減少率を求めた。なお、サンプル量は10mgとした。
熱重量分析計TGA(TAInstruments製Q50)を用い、窒素雰囲気下(窒素流量60mL/min.)で30℃から昇温速度10℃/min.で300℃まで温度変更後、さらに300℃で30分間保持し、顔料の重量変化量から重量減少率を求めた。なお、サンプル量は10mgとした。
二軸配向積層フィルムから切り出した5cm角のフィルムサンプル一枚を、黒色標準板(具体的には、黒ガラスBK-7標準板(裏当て用))にイオン交換水を介して密着させたうえで、フィルムサンプルの色調(L*、a*、b*)をJIS Z 8722:2009に準拠して、色差計(日本電色工業社製300A)を用い、反射法でL*、a*およびb*を測定した。なお、この手順では、フィルムサンプルのB層を黒色標準板に密着させた。そのうえで、下記式よりE*を求めた。
E*=[(L*)2+(a*)2+(b*)2]1/2
二軸配向積層フィルムから切り出した5cm角のフィルムサンプル一枚の全光線透過率とヘーズとをJIS K 7136:2000に準拠して、日本電色工業製ヘーズメーターNDH2000を用いて測定した。
二軸配向積層フィルムから切り出した5cm角のフィルムサンプル一枚を黒色標準板(具体的には、黒ガラスBK-7標準板(裏当て用))にイオン交換水を介して密着させたうえで、フィルムサンプルの光沢度をJIS Z 8741:1997に準拠して、光沢度計(日本電色工業社製)を用いて、入射角、受光角ともに45°で、45度鏡面光沢(すなわちGs45)を求めた。なお、この手順では、フィルムサンプルのB層を黒色標準板に密着させた。入射角および受光角を変更し、60度鏡面光沢(すなわちGs60)や85度鏡面光沢(すなわちGs85)も求めた。これらの測定結果から、下記式を用いてGarを算出した。
Gar=|Gs85-Gs45|/|Gs85-Gs60|
なお、予備実験において、Garが大きい程、二軸配向積層フィルムを金属板(具体的には、ティンフリースチール(ブライト仕上げ))にラミネートして得られるラミネート金属板のパール感が強い傾向があったため、Garを、パール感の指標、すなわち真珠光沢の指標として位置づけている。
二軸配向積層フィルムから切り出した5cm角のフィルムサンプル一枚について、JIS Z 8722:2009に準拠して、色差計(日本電色工業製自動SE6000)を用いて、a*およびb*を測定し、次に示す基準でフィルムサンプルのゴールド発色性を評価した。なお、この測定は、フィルムサンプル押えとして装置に付属の白色板を使用したうえで、反射法でおこなった。
◎:a*が-15~15、かつb*が5~45である。
○:a*が-30~20、かつb*が-10~70である(ただし◎に該当しない)。
△:a*が-30~20であるものの、b*が-10~70の範囲外である。
×:a*が-30~20の範囲外であり、b*も-10~70の範囲外である。
二軸配向積層フィルムから切り出したフィルムサンプルを130℃、120分間レトルト処理したうえで、レトルト処理前後のフィルムサンプルの色調(L*、a*、b*)を測定した。この測定結果から、下記式より色差ΔE*を算出した。
ΔE*=[(ΔL*)2+(Δa*)2+(Δb*)2]1/2
ΔL*=レトルト処理前後でのフィルムサンプルのL*の差
Δa*=レトルト処理前後でのフィルムサンプルのa*の差
Δb*=レトルト処理前後でのフィルムサンプルのb*の差
ΔE*を、次の基準で評価した。
○:ΔE*が5以下
△:ΔE*が5を超え10未満
×:ΔE*が10以上
これに加えて、レトルト処理前後のフィルムサンプルのヘーズを日本電色工業製ヘーズメーターNDH2000で測定した。この測定結果から、下記式よりヘーズ変化量ΔHzを算出した。
ΔHz=(レトルト処理後のヘーズ)-(レトルト処理前のヘーズ)
ΔHzを、次の基準で評価した。
○:ΔHzが10以下
△:ΔHzが10を超え15未満
×:ΔHzが15以上
A層用ポリエステル樹脂 固有粘度0.68dl/gの、共重合成分なしのホモポリエチレンテレフタレート
B層用ポリエステル樹脂 同上(すなわち、固有粘度0.68dl/gの、共重合成分なしのホモポリエチレンテレフタレート)
無機顔料A 濃黄色系
無機顔料B 赤色系
無機顔料C 黄色系
無機顔料D 薄黄色系
無機顔料E 青色系
有機顔料A C.I.Pigment Yellow 151、アセト酢酸アニリド系アゾ顔料
有機顔料B C.I.Pigment Yellow 214、アセト酢酸アニリド系アゾ顔料
有機顔料C C. I. Pigment Yellow 191.1、アセト酢酸アニリド系アゾ顔料でもキナクリドン系有機顔料でもない有機顔料
パール顔料A ゴールド系、酸化鉄および酸化チタンで基材を被覆
パール顔料B ゴールド系、酸化鉄および酸化チタンで基材を被覆
パール顔料C ゴールド系、酸化鉄および酸化チタンで基材を被覆
酸化チタン チタンホワイト
なお、以下では、無機顔料(具体的には無機顔料A~E)および有機顔料(具体的には有機顔料A~C)を、着色顔料と総称することがある。パール顔料(具体的にはパール顔料A~C)および酸化チタン(具体的にはチタンホワイト)を、光輝性顔料と総称することがある。
表1および2に示す処方したがって、A層用ポリエステル組成物、具体的には、A層用ポリエステル樹脂と顔料とを含有する組成物を準備した。A層用ポリエステル組成物とB層用ポリエステル樹脂とを乾燥したうえで、A層用ポリエステル組成物を、270℃に加熱された第一の押出機に供給するとともに、B層用ポリエステル樹脂を、270℃に加熱された第二の押出機に供給した。第一の押出機からA層用ポリエステル組成物をフィードブロックに導くとともに、第二の押出機からB層用ポリエステル樹脂をフィードブロックに導き、フィードブロックでこれらを積層し、ダイから溶融押出し、回転冷却ドラムで冷却した。この手順で作製された未延伸フィルムを縦方向に85℃で3.2倍延伸し、その後、横方向に105℃で3.8倍に延伸し、200℃で熱固定した。この手順で、A層とB層とを備える、厚み20μmの二軸配向積層フィルムを得た。
Claims (12)
- ポリエステル樹脂層(A)を備える金属板貼合せ用フィルムであって、
前記ポリエステル樹脂層(A)が顔料を含有し、前記顔料が、無機顔料および有機顔料の少なくとも一方と、パール顔料とを含み、
前記金属板貼合せ用フィルムのa*値が-5~20、b*値が0~50である、
金属板貼合せ用フィルム。 - 下記式を満足する、請求項1に記載の金属板貼合せ用フィルム。
|Gs85-Gs45|/|Gs85-Gs60|≧1.6
(この式において、Gs85は85度鏡面光沢であり、Gs45は45度鏡面光沢であり、Gs60は60度鏡面光沢である。) - 前記パール顔料の平均長径が5μm~80μmである、請求項1または2に記載の金属板貼合せ用フィルム。
- 前記パール顔料が、雲母、および前記雲母を被覆する酸化物を備え、前記酸化物が、アナターゼ型酸化チタン、ルチル型酸化チタン、酸化鉄、酸化ケイ素、およびコバルト鉄酸化物からなる群より選ばれる少なくとも1種である、請求項1~3のいずれかに記載の金属板貼合せ用フィルム。
- 前記パール顔料の含有量が、前記ポリエステル樹脂層(A)100質量%中、0.02質量%~10質量%である、請求項1~4のいずれかに記載の金属板貼合せ用フィルム。
- 前記ポリエステル樹脂層(A)の前記顔料が前記無機顔料を含む、請求項1~5のいずれかに記載の金属板貼合せ用フィルム。
- 前記ポリエステル樹脂層(A)の前記顔料が前記有機顔料を含み、前記有機顔料が、アセト酢酸アニリド系アゾ顔料、およびキナクリドン系有機顔料からなる群より選ばれる少なくとも1種である、請求項1~6のいずれかに記載の金属板貼合せ用フィルム。
- 前記無機顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記無機顔料の重量減少率が1.5質量%未満であり、
前記有機顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記有機顔料の重量減少率が1.5質量%未満であり、
前記パール顔料を、窒素雰囲気下で室温から10℃/minの昇温速度で300℃まで昇温したときの、前記パール顔料の重量減少率が1.5質量%未満である、
請求項1~7のいずれかに記載の金属板貼合せ用フィルム。 - 130℃で120分間のレトルト処理前後における色差ΔE*が10未満である、請求項1~8のいずれかに記載の金属板貼合せ用フィルム。
- 前記ポリエステル樹脂層(A)に接するポリエステル樹脂層(B)をさらに備え、
前記ポリエステル樹脂層(B)が、顔料を実質的に含有していない、
請求項1~9のいずれかに記載の金属板貼合せ用フィルム。 - 前記ポリエステル樹脂層(A)の厚みが5μm~50μmであり、
前記ポリエステル樹脂層(B)の厚みが0.5μm~15μmである、
請求項10に記載の金属板貼合せ用フィルム。 - 前記金属板が、飲食品用の容器を構成する部材に成形される金属板であり、
前記容器の内面に、前記金属板貼合せ用フィルムが配置されるように使用される、請求項1~11のいずれかに記載の金属板貼合せ用フィルム。
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BR112023022783A BR112023022783A2 (pt) | 2021-07-05 | 2022-06-17 | Filme para laminação de placa metálica |
CN202280038758.7A CN117412861A (zh) | 2021-07-05 | 2022-06-17 | 金属板贴合用薄膜 |
EP22837448.4A EP4368386A1 (en) | 2021-07-05 | 2022-06-17 | Film for laminating metal plate |
CA3217357A CA3217357A1 (en) | 2021-07-05 | 2022-06-17 | Film for laminating metal plate |
KR1020237035029A KR20240031939A (ko) | 2021-07-05 | 2022-06-17 | 금속판 접합용 필름 |
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JP2021111601A JP2023008217A (ja) | 2021-07-05 | 2021-07-05 | 金属板貼合せ用フィルム |
JP2021-111601 | 2021-07-05 |
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JP (1) | JP2023008217A (ja) |
KR (1) | KR20240031939A (ja) |
CN (1) | CN117412861A (ja) |
BR (1) | BR112023022783A2 (ja) |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60123338A (ja) * | 1983-12-06 | 1985-07-02 | 大和製缶株式会社 | 金属光沢を有するプラスチツク製鍔付容器 |
JPH0376764A (ja) * | 1989-08-17 | 1991-04-02 | Dainippon Toryo Co Ltd | 粉体塗料組成物 |
JP2000154264A (ja) * | 1998-11-19 | 2000-06-06 | Toyo Kohan Co Ltd | 着色樹脂フィルム、着色樹脂被覆金属板および着色樹脂被覆金属板を用いてなる缶 |
JP2007045895A (ja) | 2005-08-09 | 2007-02-22 | Toray Ind Inc | 着色ポリエステルフィルム |
JP2021031634A (ja) | 2019-08-28 | 2021-03-01 | 東洋紡フイルムソリューション株式会社 | 金属板貼合せ用フィルム |
-
2021
- 2021-07-05 JP JP2021111601A patent/JP2023008217A/ja active Pending
-
2022
- 2022-06-17 KR KR1020237035029A patent/KR20240031939A/ko unknown
- 2022-06-17 EP EP22837448.4A patent/EP4368386A1/en active Pending
- 2022-06-17 CN CN202280038758.7A patent/CN117412861A/zh active Pending
- 2022-06-17 BR BR112023022783A patent/BR112023022783A2/pt unknown
- 2022-06-17 CA CA3217357A patent/CA3217357A1/en active Pending
- 2022-06-17 WO PCT/JP2022/024359 patent/WO2023282030A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60123338A (ja) * | 1983-12-06 | 1985-07-02 | 大和製缶株式会社 | 金属光沢を有するプラスチツク製鍔付容器 |
JPH0376764A (ja) * | 1989-08-17 | 1991-04-02 | Dainippon Toryo Co Ltd | 粉体塗料組成物 |
JP2000154264A (ja) * | 1998-11-19 | 2000-06-06 | Toyo Kohan Co Ltd | 着色樹脂フィルム、着色樹脂被覆金属板および着色樹脂被覆金属板を用いてなる缶 |
JP2007045895A (ja) | 2005-08-09 | 2007-02-22 | Toray Ind Inc | 着色ポリエステルフィルム |
JP2021031634A (ja) | 2019-08-28 | 2021-03-01 | 東洋紡フイルムソリューション株式会社 | 金属板貼合せ用フィルム |
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BR112023022783A2 (pt) | 2024-01-23 |
EP4368386A1 (en) | 2024-05-15 |
CN117412861A (zh) | 2024-01-16 |
KR20240031939A (ko) | 2024-03-08 |
CA3217357A1 (en) | 2023-01-12 |
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