JP2653323B2 - Oxygen-absorbing container lid and method for producing the same - Google Patents
Oxygen-absorbing container lid and method for producing the sameInfo
- Publication number
- JP2653323B2 JP2653323B2 JP4187784A JP18778492A JP2653323B2 JP 2653323 B2 JP2653323 B2 JP 2653323B2 JP 4187784 A JP4187784 A JP 4187784A JP 18778492 A JP18778492 A JP 18778492A JP 2653323 B2 JP2653323 B2 JP 2653323B2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- container lid
- particles
- resin
- shell
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000002245 particle Substances 0.000 claims description 133
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 73
- 239000001301 oxygen Substances 0.000 claims description 73
- 229910052760 oxygen Inorganic materials 0.000 claims description 73
- 229940123973 Oxygen scavenger Drugs 0.000 claims description 57
- 229920001169 thermoplastic Polymers 0.000 claims description 56
- 229920005989 resin Polymers 0.000 claims description 51
- 239000011347 resin Substances 0.000 claims description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 25
- 239000000155 melt Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229920005672 polyolefin resin Polymers 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000011342 resin composition Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 229920013730 reactive polymer Polymers 0.000 claims 1
- -1 for example Polymers 0.000 description 25
- 239000010410 layer Substances 0.000 description 22
- 238000010521 absorption reaction Methods 0.000 description 21
- 229920001577 copolymer Polymers 0.000 description 19
- 239000003973 paint Substances 0.000 description 16
- 239000004743 Polypropylene Substances 0.000 description 12
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 239000004014 plasticizer Substances 0.000 description 11
- 239000011800 void material Substances 0.000 description 11
- 239000000796 flavoring agent Substances 0.000 description 7
- 235000019634 flavors Nutrition 0.000 description 7
- 229920001684 low density polyethylene Polymers 0.000 description 6
- 239000004702 low-density polyethylene Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000007747 plating Methods 0.000 description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 229920001748 polybutylene Polymers 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 229920000554 ionomer Polymers 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229920001179 medium density polyethylene Polymers 0.000 description 3
- 239000004701 medium-density polyethylene Substances 0.000 description 3
- 239000012768 molten material Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011253 protective coating Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 235000010323 ascorbic acid Nutrition 0.000 description 2
- 229960005070 ascorbic acid Drugs 0.000 description 2
- 239000011668 ascorbic acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- XFNGYPLLARFULH-UHFFFAOYSA-N 1,2,4-oxadiazetidin-3-one Chemical compound O=C1NON1 XFNGYPLLARFULH-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-araboascorbic acid Natural products OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229920001944 Plastisol Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- QYMFNZIUDRQRSA-UHFFFAOYSA-N dimethyl butanedioate;dimethyl hexanedioate;dimethyl pentanedioate Chemical compound COC(=O)CCC(=O)OC.COC(=O)CCCC(=O)OC.COC(=O)CCCCC(=O)OC QYMFNZIUDRQRSA-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 235000010350 erythorbic acid Nutrition 0.000 description 1
- 239000004318 erythorbic acid Substances 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 150000004820 halides Chemical group 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229940087654 iron carbonyl Drugs 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 229940026239 isoascorbic acid Drugs 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 125000003170 phenylsulfonyl group Chemical group C1(=CC=CC=C1)S(=O)(=O)* 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 239000004999 plastisol Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Packages (AREA)
- Closures For Containers (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高酸素吸収性のライナ
ー付き容器蓋及びその製造方法に関するもので、より詳
細には、密封性と高酸素吸収性との組み合わせを有し、
その製造も容易であるライナー付き容器蓋及びその製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container cover with a liner having a high oxygen absorption and a method for producing the same, and more particularly, to a combination of a sealing property and a high oxygen absorption,
The present invention relates to a container lid with a liner that can be easily manufactured and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】ビン詰等の密封包装体の製造において
は、ビンの上部に、ヘッドスペースと呼ばれる空間が必
ず存在する。打栓後のヘッドスペースには酸素が残存
し、酸素は内容物を酸化劣化し、更にはカビ、酵母、細
菌等の増殖を生じさせる原因となる。ヘッドスペースの
酸素を除去するために、内容物を充填したビンに水蒸気
や窒素ガスを吹付けて、ヘッドスペースの空気をこれら
のガスで置換し、次いで蓋の打栓を行うことが一般に知
られている。ガス置換は、ヘッドスペースの酸素をある
程度除く点で優れている。2. Description of the Related Art In the manufacture of a sealed package such as a bottle, there is always a space called a head space above a bottle. Oxygen remains in the headspace after stoppering, and the oxygen oxidizes and degrades the contents, further causing the growth of mold, yeast, bacteria and the like. In order to remove oxygen in the headspace, it is generally known to blow water vapor or nitrogen gas into a bottle filled with the contents to replace the air in the headspace with these gases and then plug the lid. ing. Gas replacement is excellent in that it removes some oxygen from the headspace.
【０００３】しかしながら、ガス置換を行うにはガス代
や設備等に多額の費用を要する。また、ガス置換しても
ヘッドスペース中の酸素を完全に除去することは困難で
あり、まして内容物の溶存酸素迄を除去することは到底
困難である。実際に果実、果汁、野菜等の罐詰やビン詰
では、残留酸素による内容物の変質を生じることが知ら
れている。[0003] However, performing gas replacement requires a large amount of cost for gas charges and facilities. Further, it is difficult to completely remove oxygen in the headspace even by gas replacement, and even more difficult to remove dissolved oxygen in the contents. Actually, it is known that in canned or bottled fruits, fruit juices, vegetables and the like, the contents are altered by residual oxygen.
【０００４】一方、容器内残留酸素の影響を防止するた
めに、蓋などに酸素吸収剤を用いたものが既に知られて
いる。例えば、容器蓋が金属製殻体と、その内側に設け
られたガスケット或いはライナーとから成り、そのガス
ケット等の樹脂に酸素吸収剤を配合したものがある。容
器蓋ライナー或いはガスケット中の酸素吸収剤はヘッド
スペース或いは内容物中の残留酸素を最終的には吸収除
去する。On the other hand, in order to prevent the influence of residual oxygen in a container, a device using an oxygen absorbent for a lid or the like is already known. For example, there is a container lid made of a metal shell and a gasket or liner provided inside the shell, in which an oxygen absorbent is blended into a resin such as the gasket. The oxygen absorbent in the container lid liner or gasket will eventually absorb and remove residual oxygen in the headspace or contents.
【０００５】本発明者らの提案にかかる特願平３−８８
５９２号には、樹脂製ライナー乃至パッキングに脱酸素
剤が配合された酸素吸収性樹脂組成物の層を設けると共
に、この酸素吸収性樹脂組成物層の容器内面側の表面
に、密封部よりも中心側のほぼ全面にわたって微小凹凸
を形成させることにより、酸素吸収速度を向上させるこ
とが提案されている。Japanese Patent Application No. 3-88 proposed by the present inventors.
No. 592 provides a layer of an oxygen-absorbing resin composition in which an oxygen-absorbing agent is blended in a resin liner or a packing, and the surface of the oxygen-absorbing resin composition layer on the inner surface side of the container has a sealing portion. It has been proposed to improve the oxygen absorption rate by forming minute irregularities over almost the entire surface on the center side.
【０００６】[0006]
【発明が解決しようとする問題点】上記提案にみられる
酸素吸収剤配合ライナーは、ある程度の酸素吸収速度の
改善は認められるものの、打栓直後から内容物滅菌乃至
殺菌処理までの間に容器内の残留酸素を香味等に影響の
ない範囲に除去するという能力に関して未だ十分満足し
得るものではなかった。内容物の香味保持性（フレーバ
ー保持性）は加熱による滅菌乃至殺菌時の残留酸素濃度
と密接な関係のあることが知られており、したがって、
打栓後短時間の内に容器内の残留酸素を除去できるよう
な酸素吸収剤配合ライナーが望まれている。The oxygen-absorbing agent-containing liner disclosed in the above proposal has a certain improvement in the oxygen absorption rate. However, the liner in the container immediately after stoppering until the contents are sterilized or sterilized. Has not been satisfactory with respect to the ability to remove residual oxygen in a range that does not affect the flavor and the like. It is known that the flavor retention of the contents (flavor retention) is closely related to the residual oxygen concentration at the time of sterilization or sterilization by heating.
There is a demand for an oxygen-absorbing agent-containing liner that can remove residual oxygen in a container within a short time after stoppering.
【０００７】本発明の目的は、容器内の残留酸素を迅速
に除去でき、これにより内容物の劣化やフレーバーの低
下を防止し得る容器蓋及びその製造方法を提供するにあ
る。本発明の他の目的は、構造が簡単で、製造も容易で
あり、しかも容器内残留酸素の初期吸収速度に優れてい
る酸素吸収剤配合ライナーを備えた容器蓋を提供するに
ある。[0007] It is an object of the present invention to provide a container lid and a method for manufacturing the same, which can quickly remove residual oxygen in the container and thereby prevent deterioration of the contents and flavor. Another object of the present invention is to provide a container lid provided with an oxygen absorbent compounded liner which has a simple structure, is easy to manufacture, and has an excellent initial absorption rate of residual oxygen in the container.
【０００８】本発明の更に他の目的は、密封性能が阻害
されることなしに、酸素吸収機能も高度に発現されるよ
うにした機能分離型ライナー付き容器蓋及びその製法を
提供するにある。本発明の別の目的は、上記機能分離型
ライナー付き容器蓋を、優れた生産性と高品質とを以て
製造し得る方法を提供するにある。It is still another object of the present invention to provide a container lid with a function-separated liner and a method for producing the same, which has a high oxygen absorption function without hindering the sealing performance. Another object of the present invention is to provide a method capable of producing the above-mentioned container lid with a function-separated type liner with excellent productivity and high quality.
【０００９】[0009]
【問題点を解決するための手段】本発明によれば、容器
蓋殻体と該殻体の内面側に施された重合体製ライナーと
から成る容器蓋において、前記ライナーには、脱酸素剤
粒子と熱可塑性重合体粒子との混合物のオコシ状一体化
成形品から成り、脱酸素剤粒子は熱可塑性重合体粒子を
介して固着されているが、脱酸素剤粒子の表面の少なく
とも一部が露出しており、且つ 単位重量当たりの空隙含
有量が０．０５乃至３ｍｌ／ｇの範囲にある、多孔質成
形体の層が設けられていることを特徴とする酸素吸収性
容器蓋が提供される。According to the present invention, there is provided a container lid comprising a container lid shell and a polymer liner provided on the inner surface side of the shell, wherein the liner includes an oxygen absorber.
-Like integration of a mixture of particles and thermoplastic polymer particles
Made from the molded article, the oxygen scavenger particles are fixed via the thermoplastic polymer particles, but at least part of the surface of the oxygen scavenger particles are exposed, and per unit weight voids containing
An oxygen-absorbing container lid provided with a layer of a porous molded body having a weight in the range of 0.05 to 3 ml / g is provided.
【００１０】本発明において、多孔質成形体をライナー
の密封部とは独立に設けるのがよく、特に多孔質成形体
を密封部よりも内側のパネル部を構成する上層部として
設け、しかもクッション性と弾性を有する熱可塑性重合
体を、前記上層部と殻体頂面との間に介在して両者を接
合している下層部として、またこの下層部と一体になっ
てパネル部の外周側で且つパネル部よりも上側に突出す
るように形成されている密封部として設けることが好ま
しい。In the present invention, the porous molded body is preferably provided independently of the sealing portion of the liner. In particular, the porous molded body is provided as an upper layer constituting a panel portion inside the sealing portion, and furthermore, has a cushioning property. And a thermoplastic polymer having elasticity, as a lower layer portion which is interposed between the upper layer portion and the shell top surface to join them together, and is integrated with this lower layer portion on the outer peripheral side of the panel portion. In addition, it is preferable to provide a sealing portion formed so as to protrude above the panel portion.
【００１１】本発明によればまた、容器蓋殻体内に、ク
ッション性と弾性とを有する熱可塑性重合体の溶融物を
供給し、脱酸素剤粒子と熱可塑性重合体粒子とを含有
し、脱酸素剤粒子は熱可塑性重合体粒子を介して固着さ
れているが、脱酸素剤粒子の表面の少なくとも一部が露
出している多孔質成形体のパネル状ジスクを前記溶融物
上に位置させ、この積層体を容器蓋殻体内で押圧型で押
圧して、パネル部を溶融物で殻体頂面に接合させると共
に溶融物をパネル部の外周にはみ出させて、密封部に成
形することを特徴とする酸素吸収性容器蓋の製造方法が
提供される。According to the present invention, a melt of a thermoplastic polymer having cushioning properties and elasticity is supplied to the inside of the container lid shell, and contains a deoxidizer particle and a thermoplastic polymer particle. Oxygen agent particles are fixed via the thermoplastic polymer particles, but at least a part of the surface of the oxygen absorber particles is exposed on the melt, a panel-shaped disc of a porous molded body is exposed, The laminated body is pressed with a press mold in the container lid shell, and the panel portion is joined to the shell body top surface with the molten material, and the molten material is protruded to the outer periphery of the panel portion to form a sealed portion. A method for producing an oxygen-absorbing container lid is provided.
【００１２】本発明いおいて、重合体の溶融物が供給さ
れた容器蓋殻体上に、前記多孔質成形体のシートを供給
し、このシートをパネル状ジスクに裁断し、裁断された
ジスクを位置ぎめされた状態で殻体の樹脂溶融物上に施
すことができる。In the present invention, a sheet of the porous molded body is supplied onto a container lid shell supplied with a polymer melt, and the sheet is cut into panel-shaped discs. Can be applied on the resin melt of the shell in a positioned state.
【００１３】[0013]
【作用】本発明では、容器蓋殻体の内面側に施される重
合体製ライナーに、脱酸素剤粒子と熱可塑性重合体粒子
との混合物のオコシ状一体化成形品から成り、脱酸素剤
粒子は熱可塑性重合体粒子を介して固着されているが、
脱酸素剤粒子の表面の少なくとも一部が露出しており、
且つ 単位重量当たりの空隙含有量が０．０５乃至３ｍｌ
／ｇの範囲にある、多孔質成形体の層を設けるのが顕著
な特徴である。According to the present invention, the polymer liner provided on the inner surface side of the container lid shell is provided with a deoxidizer particle and a thermoplastic polymer particle.
The mixture consists of an okoshi-like integrated molded product, and the oxygen scavenger particles are fixed via the thermoplastic polymer particles.
At least a part of the surface of the oxygen absorber particles is exposed ,
And the void content per unit weight is 0.05 to 3 ml
It is a remarkable feature to provide a layer of a porous molded body in the range of / g .
【００１４】脱酸素剤を樹脂中に分散させた層を用いた
ライナーが酸素の迅速吸収性に劣る理由は、脱酸素剤粒
子の表面が樹脂に覆われており、脱酸素剤粒子による酸
素の吸収が樹脂中の酸素の拡散速度で影響されるためと
考えられる。即ち、樹脂中脱酸素剤粒子分散系において
は、樹脂中の酸素の拡散速度が律速段階となっており、
このため酸素の吸収速度が遅くなる。The reason that the liner using the layer in which the oxygen scavenger is dispersed in the resin is inferior in the quick absorption of oxygen is that the surface of the oxygen scavenger particles is covered with the resin and the oxygen absorption by the oxygen scavenger particles is reduced. It is considered that absorption is affected by the diffusion rate of oxygen in the resin. That is, in the deoxidizer particle dispersion system in the resin, the diffusion rate of oxygen in the resin is the rate-determining stage,
For this reason, the oxygen absorption rate becomes slow.
【００１５】脱酸素剤粒子を樹脂中に埋め込まずに使用
する場合には、樹脂中における酸素の拡散による影響を
無くすることはできるであろうが、この場合には、粉末
の形で取り扱わなければならず、脱酸素剤粒子が容器蓋
の部材に付着したり或いはこれが内容物中に混入したり
するという問題を生じることになる。If the oxygen scavenger particles are used without being embedded in the resin, the effect of diffusion of oxygen in the resin may be eliminated, but in this case, the particles must be handled in the form of powder. Therefore, there arises a problem that the oxygen scavenger particles adhere to the member of the container lid or are mixed in the contents.
【００１６】本発明では、脱酸素剤粒子と熱可塑性重合
体粒子とからこれらが一体化した多孔質成形体を製造す
る。この多孔質成形体中において、脱酸素剤粒子及び熱
可塑性重合体粒子は均質に混合され、一様に分散されて
いるが、これらの各粒子は以下に説明するようにそれら
の独立性が維持されている。即ち、脱酸素剤粒子は熱可
塑性重合体粒子を介して固着されているが、脱酸素剤粒
子の表面の少なくとも一部、好ましくは大部分は露出し
ている。In the present invention, a porous molded article in which these are integrated is produced from the oxygen scavenger particles and the thermoplastic polymer particles. In this porous compact, the oxygen scavenger particles and the thermoplastic polymer particles are homogeneously mixed and uniformly dispersed, but these particles maintain their independence as described below. Have been. In other words, the oxygen scavenger particles are fixed via the thermoplastic polymer particles, but at least a part, preferably most of the surface of the oxygen scavenger particles is exposed.
【００１７】熱可塑性重合体粒子は、脱酸素剤粒子を固
着するためのバインダーとして作用するが、粒子として
の本質は未だ失っておらず、脱酸素剤粒子間に空隙を形
成するためのスペーサーとしての役目をも果たしてい
る。このため、この成形体においては、内部に多数の連
通空隙が形成され、この空隙に対して脱酸素剤粒子表面
が露出した構造となっている。この多孔質成形体の表面
から、前述した空隙を通して、酸素が流入し、脱酸素剤
粒子表面からの酸素の吸収が生じるので、樹脂中におけ
る酸素の拡散による影響無しに、迅速にヘッドスペース
或いは内容物中に残留する酸素を吸収除去することがで
きる。Although the thermoplastic polymer particles act as a binder for fixing the oxygen scavenger particles, their essence as particles has not yet been lost, and they serve as spacers for forming voids between the oxygen scavenger particles. It also plays the role of. For this reason, the molded article has a structure in which a large number of communicating voids are formed inside, and the surface of the oxygen scavenger particles is exposed to the voids. Oxygen flows from the surface of the porous molded body through the above-mentioned voids, and oxygen is absorbed from the surface of the oxygen-absorbing agent particles. Oxygen remaining in the object can be absorbed and removed.
【００１８】また、脱酸素剤粒子は熱可塑性重合体粒子
によりオコシ状に固められ一体化しているので、一体化
成形品としてその取扱いが容易になるばかりではなく、
脱酸素剤粒子が粉末の形で遊離して、容器蓋の部材に付
着したり或いはこれが内容物中に混入したりするという
問題を生じることがない。Further, since the oxygen scavenger particles are solidified and integrated by the thermoplastic polymer particles in a stiff state, not only the handling as an integrated molded product is facilitated, but also
There is no problem that the oxygen scavenger particles are released in the form of powder and adhere to the member of the container lid or are mixed into the contents.
【００１９】本発明で、脱酸素剤粒子含有多孔質成形体
とライナーを構成するクッション性熱可塑性重合体とを
互いに独立のものとして設けると、相互の影響が防止さ
れ、脱酸素剤粒子による酸素吸収作用と、ライナーとし
ての密封作用とが相互に最高の状態において奏されるこ
とになる。In the present invention, when the porous molded body containing the oxygen scavenger particles and the cushioning thermoplastic polymer constituting the liner are provided independently of each other, the mutual influence is prevented and the oxygen by the oxygen scavenger particles is prevented. The absorption action and the sealing action as the liner are performed in the mutually highest state.
【００２０】次に、脱酸素剤含有多孔質成形体を、密封
部よりも内側のパネル部として、ライナー上層に設けた
ことにより、ライナーの密封性に影響を及ぼさないとい
う範囲内で、脱酸素剤粒子含有多孔質成形体層を、密封
後の容器内に最大限の面積で露出させることができ、こ
れにより、脱酸素作用を十分に発揮させることができ
る。一方、パネル部よりも外周側には、クッション性と
弾性を有する熱可塑性重合体がパネル部よりも上側に突
出するように存在して、密封部を形成しているため、優
れた密封性が経時的に安定して得られるのみならず、こ
のクッション性熱可塑性樹脂がパネル部の下にも下層部
として存在して、全体が一体化した構造となっているこ
とにより、強度的にも、接着構造的にも優れたライナー
となっている。Next, the oxygen-desorbing agent-containing porous molded body is provided on the upper layer of the liner as a panel portion inside the sealing portion, so that the oxygen-absorbing agent can be removed within a range that does not affect the sealing performance of the liner. The agent particle-containing porous molded body layer can be exposed with a maximum area in the sealed container, whereby the deoxidizing effect can be sufficiently exerted. On the other hand, a thermoplastic polymer having cushioning properties and elasticity is present on the outer peripheral side of the panel portion so as to protrude upward from the panel portion and forms a sealing portion, so that excellent sealing performance is obtained. In addition to being obtained stably over time, this cushioning thermoplastic resin also exists as a lower layer under the panel part, and the overall structure is integrated, It is also a liner with excellent bonding structure.
【００２１】また、このライナーの製造に際しては、容
器蓋殻体内に、クッション性と弾性とを有する熱可塑性
重合体の溶融物を供給し、脱酸素剤含有多孔質成形体の
パネル状ジスクを前記溶融物上に位置させ、この積層体
を容器蓋殻体内で押圧型で押圧すると、この押圧力によ
り、パネル部が溶融物で殻体頂面に接合されると共に、
溶融物がパネル部の外周にはみ出されて、密封部に成形
されるので、前述した所定形状及び所定構造の機能分離
型ライナーが、高品質のものとして、高生産速度で生産
されるという利点がある。In the production of this liner, a melt of a thermoplastic polymer having cushioning properties and elasticity is supplied into a container lid shell, and a panel-shaped disk of a porous molded body containing a deoxidizer is prepared. When placed on the melt and pressing this laminate with a pressing mold inside the container lid shell, the pressing force causes the panel to be joined to the shell top surface with the melt,
Since the molten material protrudes to the outer periphery of the panel part and is formed into a sealed part, the above-mentioned function-separated type liner having the predetermined shape and the predetermined structure can be produced at high production speed as high quality. is there.
【００２２】[0022]
容器蓋、その製法 本発明による容器蓋の一例を示す「図１」（側面断面
図）において、この容器蓋殻体（シェル）１は、例えば
金属或いは硬質樹脂から形成された頂板２とスカート部
３とから成っている。この頂板２の内面側には、全体と
して４で示す熱可塑性重合体製ライナーが設けられてい
る。このライナー４は、上層パネル部５、密封部６及び
下層部７からなっている。Container Lid, Method for Producing the Same In FIG. 1 (side sectional view) showing an example of a container lid according to the present invention, a container lid shell (shell) 1 includes a top plate 2 and a skirt portion made of, for example, metal or hard resin. It consists of three. On the inner surface side of the top plate 2, a thermoplastic polymer liner indicated as a whole by 4 is provided. The liner 4 includes an upper panel section 5, a sealing section 6, and a lower layer section 7.
【００２３】上層パネル部５は、脱酸素剤含有多孔質成
形体から成り、密封部６よりも内側に、密封したとき容
器内部に露出するように設けられている。密封部６はク
ッション性と弾性を有する熱可塑性重合体から成り、パ
ネル部６の外周側で且つパネル部よりも上側に突出する
ように形成されている。この具体例において、密封部６
はビン口と係合する外周部に設けられた比較的肉厚のリ
ング状突起８、８を備えており、２つのリング状突起
８、８の間にリング状凹溝９が形成されている。下層部
７は、密封部６と同じくクッション性と弾性を有する熱
可塑性重合体からなり、上層パネル部５と殻体頂面２と
の間に介在して両者を接合し、しかも密封部６と一体と
なっている。下層部７を構成する樹脂を、ライナー形状
へ押圧成形と同時に、シェル内面側にに熱接着させるた
めに、シェル内面には熱接着用塗料層（図示せず）を設
けておくことができる。The upper panel section 5 is made of a porous molded body containing an oxygen scavenger, and is provided inside the sealing section 6 so as to be exposed to the inside of the container when sealed. The sealing portion 6 is made of a thermoplastic polymer having cushioning properties and elasticity, and is formed so as to protrude on the outer peripheral side of the panel portion 6 and above the panel portion. In this embodiment, the sealing portion 6
Is provided with relatively thick ring-shaped projections 8 provided on the outer peripheral portion to be engaged with the bottle mouth, and a ring-shaped groove 9 is formed between the two ring-shaped projections 8. . The lower layer 7 is made of a thermoplastic polymer having cushioning properties and elasticity similarly to the sealing part 6, and is interposed between the upper panel part 5 and the shell top surface 2 to join them together. It is one. A heat bonding paint layer (not shown) can be provided on the inner surface of the shell so that the resin constituting the lower layer portion 7 is heat-bonded to the inner surface of the shell at the same time as the liner shape is pressed.
【００２４】多孔質成形体５の内部断面構造を拡大して
示す「図２」において、この多孔質成形体５は均質に混
合された脱酸素剤粒子１０と熱可塑性重合体粒子１１と
が一体化されている。脱酸素剤粒子１０は熱可塑性重合
体粒子１１を介して固着されているが、脱酸素剤粒子１
１の表面の少なくとも一部、好ましくは大部分は、重合
体で覆われること無く、露出している。熱可塑性重合体
粒子１１は、脱酸素剤粒子を固着するためのバインダー
として作用するが、粒子としての本質は未だ失っておら
ず、脱酸素剤粒子１１、１１間に空隙を形成するための
スペーサーとしての役目をも果たしている。この成形体
５においては、内部に多数の連通空隙１２が形成され、
この空隙１２に対して脱酸素剤粒子１１の表面が露出し
た構造となっている。この多孔質成形体５の表面から、
前述した空隙１２を通して、酸素が流入し、脱酸素剤粒
子１０表面からの酸素の吸収が生じる。In FIG. 2 showing an enlarged internal cross-sectional structure of the porous molded body 5, the porous molded body 5 is composed of a homogeneously mixed oxygen absorber particles 10 and thermoplastic polymer particles 11. Has been Although the oxygen scavenger particles 10 are fixed via the thermoplastic polymer particles 11, the oxygen scavenger particles 1
At least a part, and preferably most, of the surface of 1 is exposed without being covered with the polymer. Although the thermoplastic polymer particles 11 act as a binder for fixing the oxygen scavenger particles, the essence of the particles has not been lost yet, and the spacers for forming voids between the oxygen scavenger particles 11 and 11 have been used. It also plays a role. In the molded body 5, a large number of communication gaps 12 are formed inside,
The structure is such that the surface of the oxygen scavenger particles 11 is exposed to the voids 12. From the surface of the porous molded body 5,
Oxygen flows in through the above-mentioned voids 12, and oxygen is absorbed from the surface of the oxygen scavenger particles 10.
【００２５】上記容器蓋の製造に際しては、予め脱酸素
剤粒子及び熱可塑性重合体粒子を含有する混合物からパ
ネル状ジスクを製造する。容器蓋殻体内に、クッション
性と弾性とを有する熱可塑性組成樹脂の溶融物を供給
し、この溶融物上にパネル状ジスクを位置させ、この積
層体を容器蓋殻体内で押圧型で押圧して、パネル部を溶
融物で殻体頂面に接合させると共に溶融物をパネル部の
外周にはみ出させて、密封部に成形する。In manufacturing the container lid, a panel-shaped disc is manufactured in advance from a mixture containing oxygen scavenger particles and thermoplastic polymer particles. A melt of a thermoplastic composition resin having cushioning and elasticity is supplied into the container lid shell, a panel-shaped disc is positioned on the melt, and the laminate is pressed with a pressing mold in the container lid shell. Then, the panel portion is joined to the top surface of the shell with a melt, and the melt is protruded to the outer periphery of the panel portion to form a sealed portion.
【００２６】本発明方法の工程を説明するための「図
３」において、先ず第１工程（樹脂溶融物供給工程）
で、容器蓋殻体１の内部には、熔融された樹脂の塊１３
が、押出機１４のダイス１５からの押出及び回転カッタ
ー１６による裁断を経て供給される。樹脂の塊１３の供
給に先立って、シェル１は、高周波誘導加熱等の手段に
よって予備加熱しておくことができる。塊１３はシェル
１内に仮熱接着された状態となっていることが望まし
い。In FIG. 3 for explaining the steps of the method of the present invention, first, a first step (a resin melt supply step)
The inside of the container lid shell 1 contains a lump of molten resin 13.
Is supplied through extrusion from a die 15 of an extruder 14 and cutting by a rotary cutter 16. Prior to the supply of the resin mass 13, the shell 1 can be preheated by means such as high-frequency induction heating. The lump 13 is desirably in a state of being preliminarily thermally bonded in the shell 1.
【００２７】次いで第２工程（パネルジスク供給工程）
において、シェル１の樹脂熔融物の塊１３上に、予め形
成された脱酸素剤含有多孔質成形体のパネル状ジスク１
７が供給される。この具体例においては、多孔質成形体
のシート１８が、シェル１の上方に位置するダイカッタ
ー１９とパンチカッター２０との間に供給され、パンチ
カッター２０が下降してシート１８を所定の寸法のパネ
ル状ジスク１７にカットする。パンチカッター２０と同
軸にジスク挿入棒２１が昇降動可能に設けられていて、
カットされたパネルジスクを先端に保持して下降し、ジ
スク１７を樹脂溶融物の塊１３に施す。Next, the second step (panel disk supply step)
In the above, a panel-shaped disk 1 of a porous molded body containing an oxygen scavenger previously formed on a lump 13 of the resin melt of the shell 1
7 is supplied. In this specific example, a sheet 18 of a porous molded body is supplied between a die cutter 19 and a punch cutter 20 located above the shell 1, and the punch cutter 20 descends to move the sheet 18 to a predetermined size. It is cut into panel-shaped disks 17. A disc insertion rod 21 is provided coaxially with the punch cutter 20 so as to be movable up and down.
The cut panel disc is held at the tip and lowered, and the disc 17 is applied to the lump 13 of the resin melt.
【００２８】第３工程（ライナー型押し工程）におい
て、パネル状ジスク１７及び樹脂溶融物の塊１３を備え
たシェル１は、押圧操作ステーションに供給され、この
シェル１はアンビル２２により支持されると同時に、ア
ンビル２２の上方に位置する押し型２３、２４及びスリ
ーブ２５が下方に降下する。中央の押し型２３は、パネ
ル状ジスク１７に対応する寸法を有していて、薄肉のラ
イナー部分を形成させるためのフラット乃至は滑らかな
曲面をなしており、一方周状の押し型２４は、ライナー
のリング状突起を形成させるための周縁のリング状凹部
２６を有している。In the third step (liner embossing step), the shell 1 provided with the panel-shaped disc 17 and the resin melt lump 13 is supplied to the pressing operation station, and the shell 1 is supported by the anvil 22. At the same time, the dies 23 and 24 and the sleeve 25 located above the anvil 22 are lowered. The central pressing die 23 has a size corresponding to the panel-shaped disc 17 and has a flat or smooth curved surface for forming a thin liner portion, while the circumferential pressing die 24 has It has a ring-shaped recess 26 on the periphery for forming a ring-shaped protrusion of the liner.
【００２９】先ずスリーブ２５がシェル１のスカート内
周縁と係合して、シェル１をしっかり固定した後、押し
型２３、２４が下降して、パネル状ジスク１７を介して
熔融した樹脂の塊１３を押圧し始める。これにより、熔
融した樹脂の塊１３は、径方向に急速に展延され、ライ
ナー形状への成形とシェル内面への接着とが行われる。
ライナーはこの押圧状態で一定時間保持され、アンビル
２２及び押し型２３、２４内に設けられた冷却機構（図
示せず）により次第に全体にわたって冷却され、固化し
たライナーとなる。スリーブ２５及び押し型２３、２４
を上昇させて、押圧成形された複合ライナーを備えた容
器蓋が得られる。尚、押し型２４とシエル１との間に存
在する空気は、押し型２４とスリーブ２５との間隙を通
って外部に排出される。First, the sleeve 25 engages with the inner peripheral edge of the skirt of the shell 1 to firmly fix the shell 1, and then the pressing dies 23 and 24 descend to move the molten resin mass 13 through the panel-shaped disc 17. Start pressing. As a result, the molten resin mass 13 is rapidly spread in the radial direction, and is formed into a liner shape and adhered to the inner surface of the shell.
The liner is held in this pressed state for a certain period of time, and is gradually cooled over the whole by a cooling mechanism (not shown) provided in the anvil 22 and the pressing dies 23 and 24 to form a solidified liner. Sleeve 25 and press dies 23, 24
Is raised to obtain a container lid provided with the composite liner formed by pressing. The air existing between the pressing die 24 and the shell 1 is discharged outside through the gap between the pressing die 24 and the sleeve 25.
【００３０】容器蓋殻体 本発明において、容器蓋殻体を構成する素材としては、
金属或いはプラスチック或いはこれらの積層体が使用さ
れる。金属素材としては、シート状乃至は箔状の表面未
処理鋼（ブラックプレート）、表面処理鋼、アルミニウ
ム等の軽金属が使用される。表面処理鋼としては、鋼基
質上に、リン酸処理、クロム酸処理等の化学処理；電解
クロム酸処理等の化成処理；電解スズメッキ、電解亜鉛
メッキ、電解クロムメッキ等の電解メッキ処理；溶融ア
ルミニウムメッキ処理；溶融錫メッキ処理等の溶融メッ
キ処理を行ったものが挙げられる。その厚みは一般に
０．１５乃至０．２５ｍｍの範囲にあるのがよい。Container lid shell In the present invention, the material constituting the container lid shell includes:
Metal, plastic, or a laminate thereof is used. As the metal material, a sheet-shaped or foil-shaped untreated surface steel (black plate), surface-treated steel, or light metal such as aluminum is used. As the surface-treated steel, chemical treatment such as phosphoric acid treatment and chromic acid treatment; chemical conversion treatment such as electrolytic chromic acid treatment; electrolytic plating treatment such as electrolytic tin plating, electrolytic zinc plating and electrolytic chromium plating; Plating treatment: A treatment which has been subjected to a hot-dip plating process such as a hot-dip tin plating process may be mentioned. Its thickness should generally be in the range of 0.15 to 0.25 mm.
【００３１】これらの金属素材の表面には、それ自体公
知の任意の保護塗料及びライナーの熱接着用下塗り塗料
の１層乃至は２層以上が施されていてもよい。保護塗料
の適当な例は、フェノール−エポキシ塗料、エポキシ−
ウリア塗料、エポキシ−メラミン塗料、フェノール−エ
ポキシ−ビニル塗料、エポキシ−ビニル塗料、塩化ビニ
ル−酢酸ビニル共重合体塗料、塩化ビニル−酢酸ビニル
−無水マレイン酸共重合体塗料、不飽和ポリエステル塗
料、飽和ポリエステル塗料等の一種又は二種以上の組合
わせである。保護塗料自体が用いるライナー用熱可塑性
樹脂に対して接着性を有しない場合には、金属素材上に
直接或いは前述した保護塗料を介してライナーの熱接着
用塗料、即ち、公知のオレフィン樹脂熱接着用塗料、例
えば酸化ポリエチレンや酸変性オレフィン樹脂を塗膜形
成性樹脂中に分散させた塗料を施こすことができる。The surface of these metal materials may be coated with one or two or more layers of any known protective coating and undercoat for thermal bonding of the liner. Suitable examples of protective paints are phenol-epoxy paints, epoxy-
Urea paint, epoxy-melamine paint, phenol-epoxy-vinyl paint, epoxy-vinyl paint, vinyl chloride-vinyl acetate copolymer paint, vinyl chloride-vinyl acetate-maleic anhydride copolymer paint, unsaturated polyester paint, saturated One or a combination of two or more such as polyester paints. When the protective coating itself does not have an adhesive property to the thermoplastic resin for the liner used, the coating for thermal bonding of the liner directly on the metal material or through the protective coating described above, that is, a known olefin resin thermal bonding Paint, for example, a paint in which polyethylene oxide or an acid-modified olefin resin is dispersed in a film-forming resin.
【００３２】これらの被覆金属素材は、王冠、ピルファ
ープルーフキャップ、タブ付スコア破断型イージイオー
プンキャップ、スクリューキヤップ、ラグキャップ、ツ
イストオフキャップ等の任意の容器蓋形状に成形され、
使用される。These coated metal materials are formed into an arbitrary container lid shape such as a crown, a pill fur proof cap, a score breakable easy open cap with a tab, a screw cap, a lug cap, a twist off cap, and the like.
used.
【００３３】一方樹脂製容器蓋としては、樹脂を射出成
形、プレス成形等の手段でキャップに成形したものが使
用される。成形用樹脂としては、熱成形可能な樹脂、例
えば、中−或いは高−密度のポリエチレン、アイソタク
ティックポリプロピレン、エチレン−プロピレン共重合
体、ポリブテン−１、エチレン−ブテン−１共重合体、
プロピレン−ブテン−１共重合体、エチレン−プロピレ
ン−ブテン−１共重合体、エチレン−酢酸ビニル共重合
体、イオン架橋オレフィン共重合体（アイオノマー）或
いはこれらのブレンド物等のオレフィン系樹脂；ポリス
チレン、スチレン−ブタジエン共重合体；ＡＢＳ樹脂；
或いはポリカーボネート等を挙げることができる。On the other hand, as the resin container lid, a resin molded into a cap by means such as injection molding or press molding is used. As the molding resin, thermoformable resins, for example, medium- or high-density polyethylene, isotactic polypropylene, ethylene-propylene copolymer, polybutene-1, ethylene-butene-1 copolymer,
Olefinic resins such as propylene-butene-1 copolymer, ethylene-propylene-butene-1 copolymer, ethylene-vinyl acetate copolymer, ion-crosslinked olefin copolymer (ionomer) or a blend thereof; polystyrene; Styrene-butadiene copolymer; ABS resin;
Alternatively, polycarbonate and the like can be mentioned.
【００３４】密封部形成用重合体 密封部そして下層部を構成する熱可塑性重合体として
は、溶融押し出し可能で、クッション性と弾性とを有す
る公知の熱可塑性重合体が使用され、特にオレフィン樹
脂；例えば低−、中−、高−密度のポリエチレン、アイ
ソタクティックポリプロピレン、プロピレン−エチレン
共重合体、ポリブテン−１、エチレン−ブテン−１共重
合体、プロピレン−ブテン−１共重合体、プロピレン−
ブテン−１共重合体、エチレン−プロピレン−ブテン−
１共重合体、エチレン−酢酸ビニル共重合体、イオン架
橋オレフィン共重合体（アイオノマー）或いはこれらの
ブレンド物等のオレフィン系樹脂とのブレンド物：エチ
レン−プロピレン共重合体ゴム、エチレン−プロピレン
−ジエン共重合体ゴム、水素化エチレン−プロピレン−
ジエン共重合体等のゴムオレフイン系エラストマー：Ｓ
ＢＳエラストマー、ブチルゴム、ＳＢＲ等の１種又は２
種以上の各種軟質プラスチックやエラストマー類を用い
ることができ、これらは溶融物の形で殻体内に施し、冷
却下に型押しして所定のライナー形状とする。オレフィ
ン系樹脂はライナーへの成形性が良好であると共に、密
封性に優れており、更に内容飲料等のフレーバー（香
味）保持性に優れている。As the thermoplastic polymer constituting the sealing portion and the lower layer portion, a known thermoplastic polymer which can be melt-extruded and has cushioning properties and elasticity is used. In particular, an olefin resin; For example, low-, medium-, and high-density polyethylene, isotactic polypropylene, propylene-ethylene copolymer, polybutene-1, ethylene-butene-1 copolymer, propylene-butene-1 copolymer, propylene-
Butene-1 copolymer, ethylene-propylene-butene-
1 Blend with olefin resin such as copolymer, ethylene-vinyl acetate copolymer, ion-crosslinked olefin copolymer (ionomer) or a blend thereof: ethylene-propylene copolymer rubber, ethylene-propylene-diene Copolymer rubber, hydrogenated ethylene-propylene-
Rubber olefin-based elastomer such as diene copolymer: S
One or two of BS elastomer, butyl rubber, SBR, etc.
More than one kind of soft plastics and elastomers can be used, and these are applied to the shell in the form of a melt, and embossed under cooling to form a predetermined liner shape. The olefin-based resin has good moldability into a liner, has excellent sealing properties, and further has excellent flavor (flavor) retention properties of content beverages and the like.
【００３５】本発明の目的に特に有利な熱可塑性重合体
は、低密度ポリエチレン、エチレン系共重合体等であ
り、ライナー特性及び配向を阻害するという点では、低
密度ポリエチレンに、(a) エチレン−プロピレン共重合
体及び、(b) 熱可塑性エラストマー、特にスチレン−ジ
エン（ブタジエン又はイソプレン）−スチレンブロック
共重合体の少なくとも１種をブレンドした組成物を用い
ることが望ましく、これらの改質成分は低密度ポリエチ
レン当り３乃至４０重量％の量で含有せしめるのがよ
い。Particularly advantageous thermoplastic polymers for the purpose of the present invention are low-density polyethylene, ethylene-based copolymers and the like. In terms of inhibiting liner characteristics and orientation, low-density polyethylene includes (a) ethylene It is desirable to use a composition obtained by blending at least one of a propylene copolymer and (b) a thermoplastic elastomer, particularly a styrene-diene (butadiene or isoprene) -styrene block copolymer, and these modified components are It is preferred that the content be 3 to 40% by weight per low density polyethylene.
【００３６】本発明で用いる熱可塑性重合体には、それ
自体周知の配合剤、例えばチタン白、カーボン黒等の白
色乃至着色顔料；炭酸カルシウム、ホワイトカーボン、
クレイ等の充填剤；酸化防止剤；滑剤；可塑剤；帯電防
止剤；熱安定剤等を、それ自体周知の配合比で配合する
ことができる。The thermoplastic polymer used in the present invention may contain known additives such as white or colored pigments such as titanium white and carbon black; calcium carbonate, white carbon, and the like.
A filler such as clay; an antioxidant; a lubricant; a plasticizer; an antistatic agent; a heat stabilizer and the like can be blended at a blending ratio known per se.
【００３７】密封部を形成する他の熱可塑性重合体とし
て、軟質塩化ビニル樹脂を挙げることができる。この軟
質塩化ビニル樹脂は、溶融押し出ししてパネル状ジスク
を施した後押圧成形するか、或いはプラスチゾルの形で
回転している蓋殻体内に施し、パネル状ジスクを施した
後、加熱ゲル化してライナーとする。As another thermoplastic polymer forming the sealing portion, a soft vinyl chloride resin can be mentioned. This soft vinyl chloride resin is melt-extruded to give a panel-like disc and then press-molded, or is applied in a rotating lid shell in the form of a plastisol, and after applying the panel-like disc, heat gelation is performed. A liner.
【００３８】塩化ビニル系樹脂としては、塩化ビニルの
単独重合体の他、塩化ビニルと少量の共単量体、例えば
酢酸ビニル、塩化ビニリデン、スチレン、アクリル酸エ
ステル、メタクリル酸エステル、ブタジエンとの共重合
体も使用できる。これらの塩化ビニル系樹脂の平均重合
度は、特に制限はなく、一般に５００乃至３０００のも
のが好都合である。これらの塩化ビニル系樹脂は、乳化
重合法による粒径の比較的微細なものでも、懸濁重合法
による粒径の比較的粗大なものでも、或いはこれらの混
合物でも本発明の目的に使用できる。Examples of the vinyl chloride resin include not only a homopolymer of vinyl chloride, but also a copolymer of vinyl chloride with a small amount of a comonomer such as vinyl acetate, vinylidene chloride, styrene, acrylate, methacrylate and butadiene. Polymers can also be used. The average degree of polymerization of these vinyl chloride resins is not particularly limited, and generally 500 to 3000 is convenient. These vinyl chloride resins can be used for the purpose of the present invention either in a relatively fine particle size by an emulsion polymerization method, in a relatively coarse particle size by a suspension polymerization method, or in a mixture thereof.
【００３９】塩化ビニル樹脂には、それ自体公知の配合
剤を勿論含有させ得る。可塑剤としては、塩化ビニル系
樹脂に対し一般に使用されている可塑剤、例えばＤＯ
Ｐ、ＤＯＢのようなフタル酸エステル系可塑剤、ＤＯ
Ａ、ＳＯＡのような脂肪族二塩基酸エステル系可塑剤、
リン酸エステル系可塑剤、ヒドロキシ多価カルボン酸エ
ステル系可塑剤、脂肪酸エステル系可塑剤、多価アルコ
ールエステル系可塑剤、エポキシ系可塑剤、ポリエステ
ル系可塑剤等を１種又は２種以上の組合せで用いること
ができる。安定剤としては、金属石鹸系安定剤、有機錫
系安定剤、有機リン酸エステル系安定剤が、充填剤とし
ては、炭酸カルシウム、微粉シリカ、炭酸マグネシウ
ム、タルク、焼成クレイ等が、顔料としてはチタン白、
カーボンブラック等が、発泡剤としては、アゾジカーボ
ンアミド、4,4 −オキシビス（ベンゼンスルホニル）ヒ
ドラジド等が使用され、また滑剤としては、マイクロク
リスタリンワックス、パラフィンワックス、ポリエチレ
ンワックス、シリコーン油、脂肪酸アミド系滑剤等が挙
げられる。尚、塩化ビニル樹脂ライナーに対して強接着
性を示す塗料としては塩化ビニル系塗料や、アクリル系
塗料が挙げられる。The vinyl chloride resin may, of course, contain a compounding agent known per se. As the plasticizer, a plasticizer generally used for a vinyl chloride resin, for example, DO
Phthalate plasticizers such as P and DOB, DO
A, an aliphatic dibasic ester plasticizer such as SOA,
One or a combination of two or more of a phosphate ester plasticizer, a hydroxy polycarboxylic acid ester plasticizer, a fatty acid ester plasticizer, a polyhydric alcohol ester plasticizer, an epoxy plasticizer, and a polyester plasticizer. Can be used. As stabilizers, metal soap-based stabilizers, organotin-based stabilizers, organic phosphate ester-based stabilizers, as fillers, calcium carbonate, finely divided silica, magnesium carbonate, talc, calcined clay, etc., as pigments, Titanium white,
Carbon black and the like are used as foaming agents, such as azodicarbonamide and 4,4-oxybis (benzenesulfonyl) hydrazide. As lubricants, microcrystalline wax, paraffin wax, polyethylene wax, silicone oil, fatty acid amide are used. And the like. In addition, as a paint exhibiting strong adhesiveness to a vinyl chloride resin liner, a vinyl chloride paint or an acrylic paint can be used.
【００４０】多孔質成形体 本発明に用いる多孔質成形体は、脱酸素剤粒子と熱可塑
性重合体粒子とを緊密に混合し、圧縮成形することによ
り製造される。成形時の温度が融点乃至軟化点以上で長
時間成形すると、熱可塑性重合体粒子が溶融流動して粒
子としての本質が失われ、脱酸素剤粒子の表面にこの重
合体の被覆が形成されるので、好ましくない。Porous Molded Article The porous molded article used in the present invention is produced by intimately mixing the oxygen scavenger particles and the thermoplastic polymer particles, followed by compression molding. When molding is performed for a long time at a molding temperature of the melting point or higher than the softening point, the thermoplastic polymer particles are melted and flow and lose their essence as particles, and a coating of this polymer is formed on the surface of the oxygen scavenger particles. It is not preferable.
【００４１】本発明に用いる脱酸素剤としては、従来こ
の種の用途に使用されている固体の脱酸素剤はすべて使
用できるが、一般には還元性でしかも実質上水に不溶な
ものが好ましく、その適当な例としては、還元性を有す
る金属粉、例えば還元性鉄、還元性亜鉛、還元性錫粉；
金属低位酸化物、例えば酸化第一鉄、四三酸化鉄、更に
還元性金属化合物、例えば炭化鉄、ケイ素鉄、鉄カルボ
ニル、水酸化鉄；などの１種または組合せたものを主成
分としたものが挙げられ、これらは必要に応じてアルカ
リ金属、アルカリ土類金属の水酸化物、炭酸塩、亜硫酸
塩、チオ硫酸塩、第三リン酸塩、第二リン酸塩、有機酸
塩、ハロゲン化物、更に活性炭、活性アルミナ、活性白
土のような助剤とも組合せて使用することができる。ま
た多価フェノールを骨格内に有する高分子化合物、例え
ば多価フェノール含有フェノール・アルデヒド樹脂等が
挙げられる。さらに、アスコルビン酸、エリソルビン
酸、ヒドロキシカルボン酸あるいはそれらの塩類等も挙
げられる。As the oxygen scavenger used in the present invention, any solid oxygen scavenger conventionally used for this kind of application can be used. However, in general, those which are reducible and substantially insoluble in water are preferable. Suitable examples thereof include reducing metal powders such as reducing iron, reducing zinc, and reducing tin powder;
Low-metal oxides such as ferrous oxide and triiron tetroxide, as well as reducing metal compounds such as iron carbide, silicon iron, iron carbonyl and iron hydroxide; These are, if necessary, an alkali metal, alkaline earth metal hydroxide, carbonate, sulfite, thiosulfate, tertiary phosphate, secondary phosphate, organic acid salt, halide. Activated carbon, activated alumina and activated clay can also be used in combination. Further, a high molecular compound having a polyhydric phenol in the skeleton, for example, a phenol-aldehyde resin containing a polyhydric phenol may be used. Further, ascorbic acid, erythorbic acid, hydroxycarboxylic acid or salts thereof are also included.
【００４２】これらの脱酸素剤粒子は、一般に平均１０
乃至２００μｍ、特に２０乃至１００μｍの粒径を有す
ることが、多孔質成形体を形成し且つ酸素吸収速度を向
上させる上で好ましい。即ち、粒径が上記範囲よりも大
きくなると、表面積が減少する結果として、酸素吸収速
度が小さくなり、一方粒径が上記範囲よりも小さいと、
成形体中の空隙容積が減少したり、或いは脱酸素剤粒子
が重合体中に埋め込まれたりする傾向が大きくなるため
やはり好ましくない。These oxygen scavenger particles generally have an average of 10
It is preferable that the particles have a particle size of from 200 to 200 μm, particularly from 20 to 100 μm, in order to form a porous molded body and improve the oxygen absorption rate. That is, when the particle size is larger than the above range, as a result of the decrease in the surface area, the oxygen absorption rate decreases, while when the particle size is smaller than the above range,
This is not preferable because the void volume in the molded article is reduced or the tendency of the oxygen scavenger particles to be embedded in the polymer is increased.
【００４３】一方、熱可塑性重合体粒子としては、オレ
フィン樹脂；例えば低−、中−、高−密度のポリエチレ
ン、アイソタクティックポリプロピレン、プロピレン−
エチレン共重合体、ポリブテン−１、エチレン−プロピ
レン共重合体、ポリブテン−１、エチレン−ブテン−１
共重合体、プロピレン−ブテン−１共重合体、プロピレ
ン−ブテン−１共重合体、エチレン−プロピレン−ブテ
ン−１共重合体、エチレン−酢酸ビニル共重合体、イオ
ン架橋オレフィン共重合体（アイオノマー）或いはこれ
らのブレンド物等：ナイロン６、ナイロン６，６等のポ
リアミド樹脂：ポリエチレンテレフタレート（ＰＥＴ）
等のポリエステル樹脂：ポリカーボネート：塩化ビニル
樹脂：等の重合体粉末を挙げることができる。On the other hand, thermoplastic polymer particles include olefin resins; for example, low-, medium-, and high-density polyethylene, isotactic polypropylene, propylene-
Ethylene copolymer, polybutene-1, ethylene-propylene copolymer, polybutene-1, ethylene-butene-1
Copolymer, propylene-butene-1 copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene-1 copolymer, ethylene-vinyl acetate copolymer, ion-crosslinked olefin copolymer (ionomer) Or a blend thereof, etc .: polyamide resin such as nylon 6, nylon 6,6, etc .: polyethylene terephthalate (PET)
And polymer powders such as polyester resin: polycarbonate: vinyl chloride resin: and the like.
【００４４】多孔質成形体（パネル状ジスク）を構成す
る熱可塑性重合体粒子は、密封部を構成する重合体と同
種の物でも異種の物でもよいが、両者の間に熱接着性が
あるような組み合わせを選ぶのが一般に好ましい。かか
る見地からは、主たる重合体の構成単位が共通する重合
体粒子を選ぶのが好ましい。The thermoplastic polymer particles constituting the porous molded article (panel-shaped disc) may be the same or different from the polymer constituting the sealing portion, but the two have thermal adhesive properties. It is generally preferred to choose such a combination. From this point of view, it is preferable to select polymer particles having a common structural unit of the main polymer.
【００４５】また、熱可塑性重合体粒子は一般にパウダ
ーと呼ばれているものであれば、任意のものを用いるこ
とができるが、成形性と多孔性の点で最適な粒度があ
り、一般に１０乃至１０００μｍ、特に２０乃至５００
μｍの粒径を有しているのがよい。Any thermoplastic polymer particles can be used as long as they are generally called powder. The thermoplastic polymer particles have an optimum particle size in terms of moldability and porosity. 1000 μm, especially 20 to 500
It preferably has a particle size of μm.
【００４６】脱酸素剤粒子と熱可塑性重合体粒子との配
合比率にも適当な範囲がある。一般に熱可塑性重合体粒
子１００重量部当り、脱酸素剤粒子を１乃至９９重量
部、特に１０乃至８０重量部の量で用いるのがよい。脱
酸素剤粒子の量が上記範囲よりも少ないと、酸素吸収速
度や酸素吸収容量が上記範囲内のものに比して劣るよう
になり、一方上記範囲よりも多いと、多孔質成形体の機
械的強度や耐摩耗性等が低下する傾向がある。The mixing ratio of the oxygen scavenger particles and the thermoplastic polymer particles also has an appropriate range. Generally, it is preferable to use the oxygen-absorbing particles in an amount of 1 to 99 parts by weight, especially 10 to 80 parts by weight, per 100 parts by weight of the thermoplastic polymer particles. When the amount of the oxygen scavenger particles is less than the above range, the oxygen absorption rate and oxygen absorption capacity become inferior to those in the above range, while when the amount is more than the above range, the machine of the porous molded body becomes There is a tendency that the mechanical strength, abrasion resistance and the like are reduced.
【００４７】本発明に用いる多孔質成形体では、単位重
量当たりの空隙含有量が０．０５乃至３ｍｌ／ｇであ
り、特に０．１乃至１．５ｍｌ／ｇの範囲にあるのがよ
い。脱酸素剤粒子表面の露出の程度は、直接測定するの
は、顕微鏡観察やその結果の画像解析処理以外には困難
であるが、脱酸素剤粒子表面の露出の程度は、上記空隙
含有量とかなりよい相関があることが分かった。空隙含
有量が上記範囲内にあれば、脱酸素剤粒子表面の露出の
程度は本発明の目的に十分であるといえる。ただこの空
隙含有量が余り大きすぎると多孔質成形体の機械的強度
が低下する。The porous molded body used in the present invention, the void content per unit weight of 0.05 to 3 ml / g Der
In particular, it is preferably in the range of 0.1 to 1.5 ml / g. The degree of exposure of the surface of the oxygen absorber particles is difficult to measure directly, except for microscopic observation and image analysis processing of the results, but the degree of exposure of the surface of the oxygen absorber particles is the same as the void content. It turns out that there is a pretty good correlation. If the void content is within the above range, it can be said that the degree of exposure of the surface of the oxygen scavenger particles is sufficient for the purpose of the present invention. However, if the void content is too large, the mechanical strength of the porous molded body decreases.
【００４８】多孔質成形体の空隙含有量は、脱酸素剤粒
子や熱可塑性重合体粒子の粒度に依存するほかに、成形
時の圧力や温度、成形時間にも依存する。即ち、圧力が
大きくなると空隙含有量が小さくなり、また温度が軟化
点乃至融点に近くなると空隙含有量は小さくなる。成形
温度は、室温から樹脂の軟化点乃至融点以下の温度の中
から適当な温度を実験的に定める。圧力は一般に５乃至
１００ｋｇ／ｃｍ2 の範囲が適当である。The void content of the porous molded article depends not only on the particle size of the oxygen scavenger particles or the thermoplastic polymer particles but also on the pressure, temperature and molding time during molding. That is, as the pressure increases, the void content decreases, and as the temperature approaches the softening point or the melting point, the void content decreases. An appropriate molding temperature is experimentally determined from room temperature to a temperature from the softening point to the melting point of the resin. Generally, the pressure is suitably in the range of 5 to 100 kg / cm 2 .
【００４９】多孔質成形体の厚みは、一般に０．１乃至
５ｍｍ、特に０．２乃至２ｍｍの範囲が適当であり、そ
の大きさは、容器蓋のライナーパネル部の大きさに応じ
て定める。The thickness of the porous molded body is generally in the range of 0.1 to 5 mm, particularly 0.2 to 2 mm, and the size is determined according to the size of the liner panel of the container lid.
【００５０】本発明において、上記多孔質成形体はその
内部に多数の空隙を有していることが必須であるが、極
く表層の熱可塑性重合体粒子のみを完全にメルトさせる
ようにしてもよい。この様に表層のみのメルト構造を採
用すると、脱酸素剤粒子からの内容物中への移行を防止
することができる。このメルト層の厚みは、一般に１乃
至１００μｍ容の範囲にあればよい。また、上記多孔質
成形体の表面に、酸素透過性で且つ水分非透過性の薄い
フィルムをラミネートし、脱酸素剤粒子化らの内容物へ
の溶出を防止するようにする事もできる。さらに、熱可
塑性重合体粒子の単独層と熱可塑性重合体粒子と脱酸素
剤のブレンド層との多層構造にし、脱酸素剤粒子からの
内容物への溶出を防止するようにすることもできる。In the present invention, it is essential that the porous molded body has a large number of voids inside. However, even if only the thermoplastic polymer particles in the surface layer are completely melted. Good. When the melt structure having only the surface layer is employed, migration from the oxygen scavenger particles into the contents can be prevented. The thickness of the melt layer may generally be in the range of 1 to 100 μm. In addition, a thin film that is permeable to oxygen and impermeable to moisture may be laminated on the surface of the porous molded body to prevent the oxygen scavenger particles from being eluted into the contents. Further, a multilayer structure of a single layer of the thermoplastic polymer particles and a blend layer of the thermoplastic polymer particles and the oxygen scavenger may be used to prevent elution of the oxygen scavenger particles into the contents.
【００５１】容器蓋殻体内に供給するライナー形成用熱
可塑性重合体の量は、殻体のサイズによっても相違する
が、一般に１００ｍｇ乃至１０ｇの範囲内で適宜定める
ことができる。一方脱酸素剤粒子含有多孔質成形体のパ
ネル状ジスクは、全ライナーの１０乃至９０重量％の範
囲にあるのがよい。本発明を、次の例により具体的に説
明する。The amount of the liner-forming thermoplastic polymer to be supplied into the container lid shell varies depending on the size of the shell, but can be appropriately determined generally in the range of 100 mg to 10 g. On the other hand, the panel-shaped disk of the porous molded body containing the oxygen scavenger particles is preferably in the range of 10 to 90% by weight of the entire liner. The present invention will be specifically described by the following examples.
【００５２】[0052]
実施例１ ポリプロピレン粒子に還元性鉄を主成分とした酸素吸収
剤粉が４０重量部となるように添加し、ポリプロピレン
粒子が未溶融状態で還元性鉄粉と混合した後、１３０℃
で加熱しながら圧縮し直径２５ｍｍの多孔質なディスク
を成形した。前記ディスクをライナーパネル部に熱融着
させて酸素吸収性容器蓋を成形した。本酸素吸収性容器
蓋の多孔質成形体は、ポリプロピレン粒子間の部分的な
固着により保形性を有すると同時に還元性鉄粉は、ポリ
プロピレン粒子を介して固着されているが大部分が露出
しているため、還元性鉄粉の脱酸素機能をほとんど低下
させずに容器内の脱酸素ができた。Example 1 Oxygen absorbent powder containing reducible iron as a main component was added to polypropylene particles so as to be 40 parts by weight, and the polypropylene particles were mixed with the reducible iron powder in an unmelted state.
Then, the mixture was compressed while being heated, to form a porous disk having a diameter of 25 mm. The disk was heat-sealed to the liner panel to form an oxygen-absorbing container lid. The porous molded body of the present oxygen-absorbing container lid has shape-retaining properties due to partial fixation between the polypropylene particles, and at the same time, the reducing iron powder is fixed via the polypropylene particles, but most of the particles are exposed. As a result, deoxidation in the container was achieved without substantially reducing the deoxidizing function of the reducing iron powder.
【００５３】比較例としてポリプロピレン樹脂と還元性
鉄粉を溶融混合した後、直径２５ｍｍのディスクを成形
し、前記ディスクをライナーパネル部に熱融着させて酸
素吸収性容器蓋を成形した。性能評価は、容積が１リッ
トルのガラス瓶内にヘッドペースが８０ｃｃになるよう
に水を充填し本発明品と比較品とを用いて密封し、ヘッ
ドスペース内の酸素濃度を経時的に測定した。測定結果
を表１に示す。As a comparative example, a polypropylene resin and reducing iron powder were melt-mixed, a disk having a diameter of 25 mm was formed, and the disk was thermally fused to a liner panel to form an oxygen-absorbing container lid. In the performance evaluation, a glass bottle having a volume of 1 liter was filled with water so as to have a head pace of 80 cc, sealed with a product of the present invention and a comparative product, and the oxygen concentration in the head space was measured over time. Table 1 shows the measurement results.
【００５４】[0054]
【表１】 このように、本発明品は比較品よりも著しく酸素吸収性
能が優れていた。[Table 1] Thus, the product of the present invention was remarkably superior in oxygen absorption performance to the comparative product.
【００５５】実施例２ ポリエチレン粒子に還元性鉄を主成分とする酸素吸収剤
粉が４０重量部となるように添加し、ポリエチレン粒子
が未溶融状態で還元性鉄粉と混合した後、８０℃で加熱
しながら圧縮し直径２５ｍｍの多孔質なディスクを成形
した。前記ディスクをライナーパネル部に熱融着させて
酸素吸収性容器蓋を成形した。本酸素吸収性容器蓋は、
ポリエチレン樹脂と還元性鉄粉とを溶融混合させた後成
形したライナーを有する酸素吸収性容器蓋に比べ酸素吸
収速度が著しく向上した。Example 2 An oxygen absorbent powder containing reducing iron as a main component was added to polyethylene particles so as to be 40 parts by weight, and the polyethylene particles were mixed with the reducing iron powder in an unmelted state. Then, the mixture was compressed while being heated, to form a porous disk having a diameter of 25 mm. The disk was heat-sealed to the liner panel to form an oxygen-absorbing container lid. The oxygen-absorbing container lid is
The oxygen absorption rate was remarkably improved as compared with an oxygen-absorbing container lid having a liner formed by melting and mixing a polyethylene resin and a reducing iron powder.
【００５６】実施例３ ポリプロピレン粒子に還元性鉄を主成分とする酸素吸収
剤粉が４０重量部となるように添加し、ポリプロピレン
粒子が未溶融状態で還元性鉄粉と混合した後、１３０℃
で加熱しながら圧縮し直径２５ｍｍの多孔質なディスク
を成形する際、混合物表面に多孔質フィルムを挿入した
後圧縮することで、多孔質フィルムを貼り合わせたディ
スクを成形した。前記ディスクをライナーパネル部に熱
融着させて酸素吸収性容器蓋を成形した。本酸素吸収性
容器蓋は、酸素吸収性能を損なわずに還元性鉄粉の脱落
や溶出を防ぐことができた。Example 3 Oxygen absorbent powder containing reducible iron as a main component was added to polypropylene particles so as to be 40 parts by weight, and the polypropylene particles were mixed with the reducible iron powder in an unmelted state.
When a porous disk having a diameter of 25 mm was formed by compressing while heating under heating, a disk on which the porous film was bonded was formed by inserting a porous film on the surface of the mixture and then compressing. The disk was heat-sealed to the liner panel to form an oxygen-absorbing container lid. The oxygen-absorbing container lid was able to prevent the dropping or elution of the reducing iron powder without impairing the oxygen absorbing performance.
【００５７】比較例としてポリプロピレン樹脂と還元性
鉄を主成分とする酸素吸収剤粉を溶融混合した後、直径
２５ｍｍのディスク上に多孔質フィルムを貼り合わせた
ものを成形し、前記ディスクをライナーパネル部に熱融
着させて酸素吸収性容器蓋を成形した。本発明品と比較
品とを用い実施例１と同一の方法で性能を評価した結果
を表２に示す。As a comparative example, a polypropylene resin and an oxygen absorbent powder mainly composed of reducible iron were melted and mixed, and then a disk having a diameter of 25 mm was laminated with a porous film to form a disk. This was heat-sealed to the portion to form an oxygen-absorbing container lid. Table 2 shows the results of evaluating the performance using the product of the present invention and the comparative product in the same manner as in Example 1.
【００５８】[0058]
【表２】 このように、本発明品は比較品よりも著しく酸素吸収性
能が優れていた。[Table 2] Thus, the product of the present invention was remarkably superior in oxygen absorption performance to the comparative product.
【００５９】実施例４ ポリプロピレン粒子に還元性鉄が主成分とする酸素吸収
剤粉が４０重量部となるように添加し、ポリプロピレン
粒子が未溶融状態で鉄粉と混合した後、１５０℃で加熱
しながら圧縮することで表面近傍がわずかに溶融した。
その後冷却し直径２５ｍｍの内部は多孔質であり表面近
傍は樹脂が溶融後固化した層からなるディスクを成形し
た。前記ディスクをライナーパネル部に熱融着させて酸
素吸収性容器蓋を成形した。比較例としてポリプロピレ
ン樹脂と還元性鉄を主成分とする酸素吸収剤粉を溶融混
合した後、直径２５ｍｍのディスクを成形し、前記ディ
スクをライナーパネル部に熱融着させて酸素吸収性容器
蓋を成形した。本発明品と比較品とを用い実施例１と同
一の方法で性能を評価した結果を表３に示す。Example 4 Oxygen absorbent powder mainly composed of reducible iron was added to polypropylene particles so as to be 40 parts by weight, and the polypropylene particles were mixed with iron powder in an unmelted state, and then heated at 150 ° C. During the compression, the vicinity of the surface was slightly melted.
Thereafter, the disc was cooled to form a disk having a layer having a diameter of 25 mm, which was porous and in which the resin was melted and solidified near the surface. The disk was heat-sealed to the liner panel to form an oxygen-absorbing container lid. As a comparative example, after a polypropylene resin and an oxygen absorbent powder mainly composed of reducible iron were melt-mixed, a disk having a diameter of 25 mm was formed, and the disk was heat-fused to a liner panel to form an oxygen-absorbing container lid. Molded. Table 3 shows the results of evaluating the performance using the product of the present invention and the comparative product in the same manner as in Example 1.
【００６０】[0060]
【表３】 このように、本発明品は比較品よりも著しく酸素吸収性
能が優れるとともに還元性鉄粉粉の脱落や溶出を防ぐこ
とができた。[Table 3] As described above, the product of the present invention was remarkably excellent in oxygen absorption performance as compared with the comparative product, and was able to prevent the reducible iron powder from falling off or eluting.
【００６１】実施例５ 脱酸素剤としてアスコルビン酸及びヒドロキノン−ホル
マリン樹脂を用い実施例１の方法により酸素吸収性容器
蓋を成形した。また比較品として上記の脱酸素剤とポリ
プロピレン樹脂とを溶融混合した後、直径２５ｍｍのデ
ィスクを成形し、前記ディスクをライナーパネル部に融
着させて酸素吸収性容器蓋を成形した。性能評価は、容
積が１リットルのガラス瓶内にヘッドスペースが８０ｃ
ｃになるように水を充填し本発明品と比較品とを用いて
密封し、ヘッドスペース内の酸素濃度を経時的に測定し
た。測定結果を表４に示す。Example 5 An oxygen-absorbing container lid was formed by the method of Example 1 using ascorbic acid and hydroquinone-formalin resin as the oxygen scavenger. As a comparative product, the above-described oxygen scavenger and polypropylene resin were melt-mixed, and then a disk having a diameter of 25 mm was formed. The disk was fused to a liner panel to form an oxygen-absorbing container lid. The performance evaluation is that the head space is 80c in a glass bottle with a volume of 1 liter.
Water was filled so as to be c, and the product was sealed using the product of the present invention and a comparative product, and the oxygen concentration in the head space was measured over time. Table 4 shows the measurement results.
【００６２】[0062]
【表４】 このように、本発明品は比較品よりも著しく酸素吸収性
能が優れていた。[Table 4] Thus, the product of the present invention was remarkably superior in oxygen absorption performance to the comparative product.
【００６３】実施例６ 実施例１と同一な材料で多孔質なディスクを成形した。
更に、容器蓋殻体内にパネル部と周囲の密封部を形成す
るＬＤＰＥ系の溶融物を供給した後、本ディスクを溶融
物上に挿入し、押圧して本ディスクと密封材とを接合さ
せるとともに溶融物をパネル部の外周にはみ出させて密
封部を成形し酸素吸収性容器蓋を成形した。本酸素吸収
性容器蓋は型で押圧され、更に表面積が減少したにもか
かわらず酸素吸収性能に優れ、密封材と本ディスクの接
着力も問題なく開栓性に優れた。Example 6 A porous disk was formed from the same material as in Example 1.
Furthermore, after supplying the LDPE-based melt that forms the panel portion and the surrounding sealing portion in the container lid shell, the present disk is inserted onto the melt, and pressed to join the present disk and the sealing material. The melt was allowed to protrude to the outer periphery of the panel portion to form a sealed portion, and a lid for an oxygen-absorbing container was formed. The present oxygen-absorbing container lid was pressed by a mold, and was excellent in oxygen-absorbing performance even though the surface area was further reduced, and was excellent in openability without any problem in adhesion between the sealing material and the present disk.
【００６４】[0064]
【発明の効果】本発明によれば、容器蓋殻体と該殻体の
内面側に施された重合体製ライナーとから成る容器蓋に
おいて、前記ライナーに対して、脱酸素剤粒子と熱可塑
性重合体粒子との混合物のオコシ状一体化成形品から成
り、脱酸素剤粒子は熱可塑性重合体粒子を介して固着さ
れているが、脱酸素剤粒子の表面の少なくとも一部が露
出しており、且つ 単位重量当たりの空隙含有量が０．０
５乃至３ｍｌ／ｇの範囲にある、多孔質成形体の層を設
けることにより、この多孔質成形体の表面から、空隙を
通して、酸素が流入し、脱酸素剤粒子表面からの酸素の
吸収が生じるので、樹脂中における酸素の拡散律速によ
る影響無しに、迅速にヘッドスペース或いは内容物中に
残留する酸素を吸収除去することができる。According to the present invention, in a container closure comprising a polymer liner which has been subjected to the inner surface of the container closure shell and the shell body for the liner, the oxygen scavenger particles and a thermoplastic
Of a mixture with the polymer particles
Although the oxygen scavenger particles are fixed via the thermoplastic polymer particles, at least a part of the surface of the oxygen scavenger particles is exposed , and the void content per unit weight is 0.0
By providing a layer of the porous molded body in the range of 5 to 3 ml / g , oxygen flows from the surface of the porous molded body through the voids, and oxygen is absorbed from the surface of the oxygen scavenger particles. Therefore, the oxygen remaining in the head space or the contents can be quickly absorbed and removed without being affected by the diffusion control of oxygen in the resin.
【００６５】また、脱酸素剤粒子は熱可塑性重合体粒子
によりオコシ状に固められ一体化しているので、一体化
成形品としてその取扱いが容易になるばかりではなく、
脱酸素剤粒子が粉末の形で遊離して、容器蓋の部材に付
着したり或いはこれが内容物中に混入したりするという
問題を生じることがない。Further, since the oxygen scavenger particles are solidified and integrated by the thermoplastic polymer particles in a stiff shape, not only the handling as an integrated molded product is facilitated, but also
There is no problem that the oxygen scavenger particles are released in the form of powder and adhere to the member of the container lid or are mixed into the contents.
【００６６】本発明で、脱酸素剤粒子含有多孔質成形体
とライナーを構成するクッション性熱可塑性重合体とを
互いに独立のものとして設けると、相互の影響が防止さ
れ、脱酸素剤粒子による酸素吸収作用と、ライナーとし
ての密封作用とが相互に最高の状態において奏されるこ
とになる。In the present invention, when the porous molded body containing the oxygen scavenger particles and the cushioning thermoplastic polymer constituting the liner are provided independently of each other, the mutual influence is prevented, and the oxygen by the oxygen scavenger particles is prevented. The absorption action and the sealing action as the liner are performed in the mutually highest state.
【００６７】以上により、本発明によれば、容器内の残
留酸素を迅速に除去でき、これにより内容物の劣化やフ
レーバーの低下を防止し得ると共に、容器蓋の構造が簡
単で、製造も容易であり、しかも高酸素吸収性容器蓋
を、優れた生産性と高品質とを以て製造し得ることにな
る。As described above, according to the present invention, the residual oxygen in the container can be quickly removed, thereby preventing the deterioration of the contents and the flavor, the structure of the container lid is simple, and the production is easy. In addition, a high oxygen-absorbing container lid can be manufactured with excellent productivity and high quality.
【図１】 本発明による容器蓋の一例を示す側面断面図
である。FIG. 1 is a side sectional view showing an example of a container lid according to the present invention.
【図２】 本発明に用いる多孔質成形体の内部断面構造
を拡大して示す拡大断面図である。FIG. 2 is an enlarged cross-sectional view showing the internal cross-sectional structure of a porous molded body used in the present invention in an enlarged manner.
【図３】 本発明方法の工程を説明するための工程図で
あって、Ａは第１工程（樹脂溶融物供給工程）、FIG. 3 is a process chart for explaining the steps of the method of the present invention, wherein A is a first step (resin melt supply step),
１は容器蓋殻体（シェル）、２は頂板、３はスカート
部、４は熱可塑性重合体製ライナー、５は多孔質成形体
（上層パネル部）、６は密封部、７は下層部、８は比較
的肉厚のリング状突起、９はリング状凹溝、１０は脱酸
素剤粒子、１１は熱可塑性重合体粒子、１２は空隙、１
３は熔融された樹脂の塊、１４は押出機、１５はダイ
ス、１６は回転カッター、１７はパネル状ジスク、１８
は多孔質成形体のシート、１９はダイカッター、２０は
パンチカッター、２１はジスク挿入棒、２２はアンビ
ル、２３、２４は押し型、２５はスリーブ、２６は周縁
のリング状凹部。1 is a container lid shell, 2 is a top plate, 3 is a skirt portion, 4 is a liner made of a thermoplastic polymer, 5 is a porous molded body (upper panel portion), 6 is a sealing portion, 7 is a lower portion, 8 is a relatively thick ring-shaped projection, 9 is a ring-shaped groove, 10 is an oxygen absorber particle, 11 is a thermoplastic polymer particle, 12 is a void, 1
3 is a molten resin mass, 14 is an extruder, 15 is a die, 16 is a rotary cutter, 17 is a panel-shaped disc, 18
Is a sheet of a porous molded body, 19 is a die cutter, 20 is a punch cutter, 21 is a disc insertion bar, 22 is an anvil, 23 and 24 are press dies, 25 is a sleeve, and 26 is a peripheral ring-shaped recess.
Claims (12)
重合体製ライナーとから成る容器蓋において、前記ライ
ナーには、脱酸素剤粒子と熱可塑性重合体粒子との混合物のオコシ
状一体化成形品から成り、 脱酸素剤粒子は熱可塑性重合体粒子を介して固着されて
いるが、脱酸素剤粒子の表面の少なくとも一部が露出し
ており、且つ 単位重量当たりの空隙含有量が０．０５乃至３ｍｌ／ｇ
の範囲にある、 多孔質成形体の層が設けられていることを特徴とする酸
素吸収性容器蓋。1. A container lid comprising a container lid shell and a polymer liner provided on the inner surface side of the shell, wherein the liner comprises a mixture of a deoxidizer particle and a thermoplastic polymer particle. Okoshi
The oxygen absorber particles are fixed via thermoplastic polymer particles, but at least a part of the surface of the oxygen absorber particles is exposed , and voids per unit weight are included. The amount is 0.05-3ml / g
An oxygen-absorbing container lid, characterized in that a layer of a porous molded body is provided in the range of the above .
のパネル部を構成する上層部として設け、しかもクッシ
ョン性と弾性を有する熱可塑性重合体を、前記上層部と
殻体頂面との間に介在して両者を接合している下層部と
して、またこの下層部と一体になってパネル部の外周側
で且つパネル部よりも上側に突出するように形成されて
いる密封部として設ける請求項１記載の酸素吸収性容器
蓋。2. The method according to claim 1, wherein the porous molded body is provided as an upper layer constituting a panel portion inside the sealing portion, and a thermoplastic polymer having cushioning properties and elasticity is provided between the upper layer portion and the shell top surface. A lower layer portion interposed therebetween and joining the two, and a sealing portion integrally formed with the lower layer portion so as to protrude from the outer peripheral side of the panel portion and upward from the panel portion. An oxygen-absorbing container lid according to claim 1.
フィン系樹脂あるいは酸変性したポリオレフィン系樹脂
であること、またはポリオレフィン系樹脂あるいは酸変
性したポリオレフィン系樹脂と、吸湿性のある樹脂ある
いは吸湿性のある無機質を含む樹脂組成物であることを
特徴とする請求項１記載の酸素吸収性容器蓋。3. The composition of the thermoplastic polymer particles is a polyolefin resin or an acid-modified polyolefin resin, or a combination of a polyolefin resin or an acid-modified polyolefin resin with a hygroscopic resin or a hygroscopic resin. 2. The oxygen-absorbing container lid according to claim 1, which is a resin composition containing a certain inorganic substance.
にアルカリ金属などの酸素吸収反応促進助剤を添加した
ものであることを特徴とする請求項１記載の酸素吸収性
容器蓋。4. The oxygen-absorbing container lid according to claim 1, wherein the oxygen scavenger is a reducing iron or a reducing iron to which an oxygen-absorbing reaction promoting aid such as an alkali metal is added.
も１つの表面が熱可塑性樹脂フィルムあるいは多孔質フ
ィルムで覆われていることを特徴とする請求項１記載の
酸素吸収性容器蓋。5. The oxygen-absorbing container lid according to claim 1, wherein at least one of the surfaces of the layer of the porous molded body is covered with a thermoplastic resin film or a porous film.
樹脂重合体粒子が溶融後固化した層が存在することを特
徴とする請求項１記載の酸素吸収性容器蓋。6. The oxygen-absorbing container lid according to claim 1, wherein a layer formed by melting and solidifying the thermoplastic resin polymer particles is present near the surface of the layer of the porous molded body.
を有する熱可塑性重合体の溶融物を供給し、脱酸素剤粒
子と熱可塑性重合体粒子とを含有し、脱酸素剤粒子は熱
可塑性重合体粒子を介して固着されているが、脱酸素剤
粒子の表面の少なくとも一部が露出している多孔質成形
体のパネル状ジスクを前記溶融物上に位置させ、この積
層体を容器蓋殻体内で押圧型で押圧して、パネル部を溶
融物で殻体頂面に接合させると共に溶融物をパネル部の
外周にはみ出させて、密封部に成形することを特徴とす
る酸素吸収性容器蓋の製造方法。7. A melt of a thermoplastic polymer having cushioning properties and elasticity is supplied into a container lid shell, and contains a deoxidizer particle and a thermoplastic polymer particle. A panel-shaped disc of a porous molded body that is fixed via the plastic polymer particles but at least a part of the surface of the oxygen scavenger particles is exposed is positioned on the melt, and the laminate is placed in a container. Oxygen-absorbing, characterized in that the panel is joined to the top surface of the shell with a melt by pressing with a pressing mold in the lid shell, and the melt is protruded to the outer periphery of the panel to form a sealed part Manufacturing method of container lid.
上に、前記多孔質成形体のシートを供給し、このシート
をパネル状ジスクに裁断し、裁断されたジスクを位置ぎ
めされた状態で殻体の樹脂溶融物上に施すことを特徴と
する請求項７記載の酸素吸収性容器蓋の製造方法。8. A sheet of the porous molded body is supplied onto a vessel lid shell supplied with a polymer melt, the sheet is cut into panel-shaped discs, and the cut discs are positioned. 8. The method for producing an oxygen-absorbing container lid according to claim 7, wherein the method is applied on the resin melt of the shell in a state of being folded.
粒子と熱可塑性重合体粒子とを緊密に混合し、圧縮成形
することにより製造されるものである請求項１記載の酸
素吸収性容器蓋。 9. The oxygen-containing integrated molded article is an oxygen scavenger.
Intimate mixing of particles and thermoplastic polymer particles, compression molding
The acid according to claim 1, which is produced by
Elemental absorbent container lid.
点乃至融点以下の温度且つ５乃至１００ｋｇ／ｃｍ 2 の
圧力の成形条件で行われる請求項９記載の酸素吸収性容
器蓋。 10. The method according to claim 10, wherein the compression molding is performed at room temperature to soften the resin.
Point to a temperature below the melting point and 5 to 100 kg / cm 2
The oxygen-absorbing container according to claim 9, which is performed under pressure molding conditions.
Vessel lid.
ｍの粒径を有し且つ前記熱可塑性重合体粒子が１０乃至
１０００μｍの粒径を有している請求項１記載の酸素吸
収性容器蓋。 11. The oxygen scavenger particles having a particle size of 10 to 200 μm.
m and the thermoplastic polymer particles have a particle size of 10 to
2. The oxygen absorber according to claim 1, which has a particle size of 1000 μm.
Yield container lid.
性重合体粒子１００重量部当り、脱酸素剤粒子を１乃至
９９重量部の量で含有する請求項１記載の酸素吸収性容
器蓋。 12. The integrated coconut-like molded article is made of thermoplastic resin.
1 to 100 parts by weight of the reactive polymer particles,
The oxygen absorbing container according to claim 1, which is contained in an amount of 99 parts by weight.
Vessel lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4187784A JP2653323B2 (en) | 1992-07-15 | 1992-07-15 | Oxygen-absorbing container lid and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4187784A JP2653323B2 (en) | 1992-07-15 | 1992-07-15 | Oxygen-absorbing container lid and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0640463A JPH0640463A (en) | 1994-02-15 |
| JP2653323B2 true JP2653323B2 (en) | 1997-09-17 |
Family
ID=16212168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4187784A Expired - Fee Related JP2653323B2 (en) | 1992-07-15 | 1992-07-15 | Oxygen-absorbing container lid and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2653323B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4756497B2 (en) * | 2005-02-25 | 2011-08-24 | 株式会社吉野工業所 | Packing for containers |
| JP5437568B2 (en) * | 2007-07-27 | 2014-03-12 | 功 横山 | Capping method for obtaining hydrogen reduced water or hydrogen reduced food and its cap |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4840280A (en) * | 1988-01-28 | 1989-06-20 | American Air Liquide | Sealing cap for liquid food or beverage containers |
| JPH02269667A (en) * | 1990-03-26 | 1990-11-05 | Toyo Seikan Kaisha Ltd | Container lid |
| JP3025072B2 (en) * | 1991-08-30 | 2000-03-27 | 東レ株式会社 | Oxygen absorbing disc |
-
1992
- 1992-07-15 JP JP4187784A patent/JP2653323B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640463A (en) | 1994-02-15 |
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