JP2021059060A - 積層体、包装体及び包装物品 - Google Patents
積層体、包装体及び包装物品 Download PDFInfo
- Publication number
- JP2021059060A JP2021059060A JP2019184539A JP2019184539A JP2021059060A JP 2021059060 A JP2021059060 A JP 2021059060A JP 2019184539 A JP2019184539 A JP 2019184539A JP 2019184539 A JP2019184539 A JP 2019184539A JP 2021059060 A JP2021059060 A JP 2021059060A
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- JP
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- Prior art keywords
- layer
- oxygen
- oxygen absorbing
- substance
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 164
- 239000001301 oxygen Substances 0.000 claims abstract description 164
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 164
- 239000000126 substance Substances 0.000 claims abstract description 113
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 41
- 150000002433 hydrophilic molecules Chemical class 0.000 claims abstract description 28
- 239000011342 resin composition Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims description 38
- -1 phenol compound Chemical class 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 235000004515 gallic acid Nutrition 0.000 claims description 18
- 229940074391 gallic acid Drugs 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 11
- 125000000524 functional group Chemical group 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 9
- 125000003277 amino group Chemical group 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 229920001451 polypropylene glycol Polymers 0.000 claims description 6
- 150000002894 organic compounds Chemical class 0.000 claims description 5
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallyl group Chemical group C1(=C(C(=CC=C1)O)O)O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 238000003475 lamination Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 20
- 239000010410 layer Substances 0.000 description 143
- 238000004806 packaging method and process Methods 0.000 description 34
- 239000010408 film Substances 0.000 description 31
- 239000005022 packaging material Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- 235000013305 food Nutrition 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000012948 isocyanate Substances 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- 229940123973 Oxygen scavenger Drugs 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- ZTHYODDOHIVTJV-UHFFFAOYSA-N Propyl gallate Chemical compound CCCOC(=O)C1=CC(O)=C(O)C(O)=C1 ZTHYODDOHIVTJV-UHFFFAOYSA-N 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 235000006708 antioxidants Nutrition 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
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- 238000007639 printing Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 229910052703 rhodium Inorganic materials 0.000 description 3
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- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 238000009461 vacuum packaging Methods 0.000 description 3
- 230000002087 whitening effect Effects 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000011354 acetal resin Substances 0.000 description 2
- 150000001241 acetals Chemical class 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 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
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000010323 ascorbic acid Nutrition 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VFPFQHQNJCMNBZ-UHFFFAOYSA-N ethyl gallate Chemical compound CCOC(=O)C1=CC(O)=C(O)C(O)=C1 VFPFQHQNJCMNBZ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 235000013373 food additive Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
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- 239000008103 glucose Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
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- 230000007774 longterm Effects 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 150000007965 phenolic acids Chemical class 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000011736 potassium bicarbonate Substances 0.000 description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 2
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 2
- 229910000160 potassium phosphate Inorganic materials 0.000 description 2
- 235000011009 potassium phosphates Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000473 propyl gallate Substances 0.000 description 2
- 235000010388 propyl gallate Nutrition 0.000 description 2
- 229940075579 propyl gallate Drugs 0.000 description 2
- CPRMKOQKXYSDML-UHFFFAOYSA-M rubidium hydroxide Chemical compound [OH-].[Rb+] CPRMKOQKXYSDML-UHFFFAOYSA-M 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000001509 sodium citrate Substances 0.000 description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
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- 239000004711 α-olefin Substances 0.000 description 2
- PZWQOGNTADJZGH-SNAWJCMRSA-N (2e)-2-methylpenta-2,4-dienoic acid Chemical compound OC(=O)C(/C)=C/C=C PZWQOGNTADJZGH-SNAWJCMRSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
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- JGSRCGNALNSSFE-UHFFFAOYSA-L [Mg+2].[K+].[O-]C([O-])=O Chemical compound [Mg+2].[K+].[O-]C([O-])=O JGSRCGNALNSSFE-UHFFFAOYSA-L 0.000 description 1
- PIYVNGWKHNMMAU-UHFFFAOYSA-N [O].O Chemical compound [O].O PIYVNGWKHNMMAU-UHFFFAOYSA-N 0.000 description 1
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
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- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 229910001865 beryllium hydroxide Inorganic materials 0.000 description 1
- XTIMETPJOMYPHC-UHFFFAOYSA-M beryllium monohydroxide Chemical compound O[Be] XTIMETPJOMYPHC-UHFFFAOYSA-M 0.000 description 1
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- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
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- 235000001465 calcium Nutrition 0.000 description 1
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- FNAQSUUGMSOBHW-UHFFFAOYSA-H calcium citrate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O FNAQSUUGMSOBHW-UHFFFAOYSA-H 0.000 description 1
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- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
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- HQRPHMAXFVUBJX-UHFFFAOYSA-M lithium;hydrogen carbonate Chemical compound [Li+].OC([O-])=O HQRPHMAXFVUBJX-UHFFFAOYSA-M 0.000 description 1
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- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
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- NRPKURNSADTHLJ-UHFFFAOYSA-N octyl gallate Chemical compound CCCCCCCCOC(=O)C1=CC(O)=C(O)C(O)=C1 NRPKURNSADTHLJ-UHFFFAOYSA-N 0.000 description 1
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
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- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 229940074439 potassium sodium tartrate Drugs 0.000 description 1
- VLYFRFHWUBBLRR-UHFFFAOYSA-L potassium;sodium;carbonate Chemical compound [Na+].[K+].[O-]C([O-])=O VLYFRFHWUBBLRR-UHFFFAOYSA-L 0.000 description 1
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- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 1
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- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 1
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Images
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Abstract
Description
以下に、本実施形態に係る積層体について、図面を参照しながら説明する。なお、同様又は類似した機能を有する要素については、同一の参照符号を付し、重複する説明は省略する。
最外層は、本発明の積層体を形成するための基材として機能すれば特に限定されないが、最外層からの酸素の侵入を抑制するため最外層は酸素バリア性に優れることが好ましい。
酸素吸収物質含有層11aは、少なくとも酸素吸収物質と樹脂組成物を主成分とし、樹脂組成物は少なくとも樹脂、親水性化合物、硬化剤を含有する。
図1及び図2に示す第一の実施形態に係る積層体1は、酸素吸収物質含有層11aと最内層12との間もしくは最外層10aと酸素吸収物質含有層11aとの間にアルカリ層11bを備える。後述するように、酸素吸収物質含有層11aがアルカリ物質を含有する場合には、積層体1はアルカリ層12bを備えなくてもよい。
図1及び図2に示す積層体1は、最内層12を備える。最内層12は、積層体1において、基材としての最外層10とは反対側の表面を構成する層である。
本実施形態に係る包装体は、上記の積層体を含む。具体的には、包装体の少なくとも一部が、上記の積層体で形成される。なお、本実施形態に係る包装体には、印刷層、バリア層、表面保護層などの機能層を更に設けてもよい。
本実施形態に係る包装物品は、上記の包装体と、これに収容された内容物とを含む。上記の包装体に収容される内容物の例は、特に限定しないが、例えば食品、飲料、化粧品、医薬品、産業資材、医療器具、電子機器、文化財を含む。
以下の方法により、基材層と酸素吸収物質含有層とアルカリ層とシーラント層とを備えた積層体を製造した。
実施例1における水溶性の親水性化合物をポリプロピレングリコール(分子量700)に変更した樹脂組成物を使用した酸素吸収積層体を作製した。
<実施例3>
実施例2における水溶性の親水性化合物をトリオール型のポリプロピレングリコール(分子量1500)とした以外は実施例2と同様の酸素吸収積層体を作製した。
実施例1におけるアルカリ層においてポリエチレングリコールを使用せずに、ポリビニルアセタール系樹100重量部に対して、イソシアネート系化合物(3官能、NCO 12wt%)を11重量部とした樹脂組成物にアルカリ物質である炭酸ナトリウムを添加して作製した塗液を、酸素吸収物質含有層上にワイヤーバーで塗工し、厚さ6μmのアルカリ層を形成した酸素吸収積層体を作製した。アルカリ層の全質量に対する炭酸ナトリウムの含有率は30質量%とした。
(酸素吸収性能)
上記で作製した積層体を用い、25℃20%Rhの環境下で、全体寸法が横15cm×縦15cmの包装袋を作製した。包装袋には1.5gのイオン交換水を湿らせたウェスを内包させている。次に袋内に400ccの空気を注入した。40℃20%Rhの恒温槽で1週間保管後、酸素濃度を測定し、初期酸素濃度との差から、それぞれの酸素吸収量を確認した。
(フィルムの透明性)
上記酸素吸収性能の評価において、40℃20%Rhの恒温槽で1週間保管を行った包装袋を使用して透明性を評価した。透明性は内容物の視認性として内包したウェスの見え方を目視で観察した後に、包装袋を5cm×5cmのフィルム片に切り出してヘイズを測定した。
10 最外層
11 酸素吸収層
11a 酸素吸収物質含有層
11b アルカリ層
12 最内層
Claims (13)
- 少なくとも最外層、酸素吸収層、最内層をこの順序で備える積層体であって、前記酸素吸収層が酸素吸収物質のフェノール化合物、酸素吸収助剤のアルカリ物質、及び樹脂組成物を主成分として形成され、前記樹脂組成物が、樹脂、親水性化合物及び硬化剤を含むことを特徴とする積層体。
- 前記親水性化合物が有機化合物であることを特徴とする請求項1に記載の積層体。
- 前記有機化合物が、少なくとも分子中にエーテル結合、水酸基、カルボキシ基、もしくはアミノ基のいずれかを含む水溶性化合物であることを特徴とした請求項2に記載の積層体。
- 前記エーテル結合を含む水溶性化合物が、分子中に2つ以上のエーテル結合以外の極性官能基を含むことを特徴とする請求項3に記載の積層体。
- 前記エーテル結合を含む水溶性化合物がポリエチレングリコールもしくはポリプロピレングリコールであることを特徴とする請求項4に記載の積層体。
- 前記酸素吸収層の前記樹脂組成物に含まれる前記樹脂が少なくとも水酸基、カルボン酸もしくはアミノ基のいずれかを含有することを特徴とする求項1から請求項5のいずれか1項に記載の積層体。
- 前記酸素吸収物質としてピロガロール基を有するフェノール化合物を少なくとも含有することを特徴とする請求項1から請求項6のいずれか1項に記載の積層体。
- 前記酸素吸収物質として、没食子酸及び没食子酸エステルの少なくとも1種を含有することを特徴とする請求項1から請求項7のいずれか1項に記載の積層体。
- 前記酸素吸収層が、前記酸素吸収物質を含む層と前記酸素吸収助剤を含む層との2層構成であることを特徴とする請求項1から請求項8のいずれか1項に記載の積層体。
- 前記最内層はシーラント層を含むことを特徴とする請求項1から請求項9のいずれか1項に記載の積層体。
- 前記最外層が酸素と水蒸気のバリア性を有することを特徴とする請求項1から請求項10のいずれか1項に記載の積層体。
- 請求項1から請求項11のいずれか1項に記載の積層体を含む包装体。
- 請求項1から請求項11のいずれか1項に記載の積層体を含む包装体と、これに収容された内容物とを含んだ包装物品。
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JPS56159166A (en) * | 1980-05-12 | 1981-12-08 | Toyo Boseki | Laminate |
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JPH08207420A (ja) * | 1995-02-02 | 1996-08-13 | Dainippon Printing Co Ltd | 印刷表示を有する成形体およびその製造方法 |
US20060172048A1 (en) * | 2005-01-21 | 2006-08-03 | Etchells Marc D | Food preservation systems |
WO2011125739A1 (ja) * | 2010-03-31 | 2011-10-13 | 株式会社クラレ | 多層構造体、積層体及びその製造方法 |
WO2017209014A1 (ja) * | 2016-06-01 | 2017-12-07 | 共同印刷株式会社 | 酸素吸収性樹脂組成物、及び酸素吸収性フィルム |
WO2018179864A1 (ja) * | 2017-03-29 | 2018-10-04 | 富士フイルム株式会社 | ガス吸着材料及びその製造方法、並びに、包装材料 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS56159166A (en) * | 1980-05-12 | 1981-12-08 | Toyo Boseki | Laminate |
JPH0310663A (ja) * | 1989-06-07 | 1991-01-18 | Mitsubishi Gas Chem Co Inc | 脱酸素剤 |
JPH08207420A (ja) * | 1995-02-02 | 1996-08-13 | Dainippon Printing Co Ltd | 印刷表示を有する成形体およびその製造方法 |
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