CN219884341U - Molded container and package - Google Patents
Molded container and package Download PDFInfo
- Publication number
- CN219884341U CN219884341U CN202223501386.3U CN202223501386U CN219884341U CN 219884341 U CN219884341 U CN 219884341U CN 202223501386 U CN202223501386 U CN 202223501386U CN 219884341 U CN219884341 U CN 219884341U
- Authority
- CN
- China
- Prior art keywords
- synthetic resin
- resin film
- molded container
- delta
- cte
- 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.)
- Active
Links
- 239000010410 layer Substances 0.000 claims abstract description 101
- 239000011241 protective layer Substances 0.000 claims abstract description 93
- 239000005022 packaging material Substances 0.000 claims abstract description 61
- 230000004888 barrier function Effects 0.000 claims abstract description 49
- 238000007639 printing Methods 0.000 claims abstract description 45
- 108700041286 delta Proteins 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 229920003002 synthetic resin Polymers 0.000 claims description 137
- 239000000057 synthetic resin Substances 0.000 claims description 137
- 239000012790 adhesive layer Substances 0.000 claims description 30
- 239000011888 foil Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 17
- 229920000098 polyolefin Polymers 0.000 claims description 14
- 239000002356 single layer Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 description 40
- 239000000976 ink Substances 0.000 description 39
- 229920005989 resin Polymers 0.000 description 24
- 239000011347 resin Substances 0.000 description 24
- 239000000853 adhesive Substances 0.000 description 19
- 230000001070 adhesive effect Effects 0.000 description 19
- 229910052782 aluminium Inorganic materials 0.000 description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 16
- 238000000465 moulding Methods 0.000 description 15
- 239000006229 carbon black Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 229920005862 polyol Polymers 0.000 description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 239000005020 polyethylene terephthalate Substances 0.000 description 11
- 239000001993 wax Substances 0.000 description 11
- 230000032798 delamination Effects 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 9
- 150000003077 polyols Chemical class 0.000 description 9
- 229920005749 polyurethane resin Polymers 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 7
- 239000000806 elastomer Substances 0.000 description 7
- 229920000092 linear low density polyethylene Polymers 0.000 description 7
- 239000004707 linear low-density polyethylene Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920001707 polybutylene terephthalate Polymers 0.000 description 7
- 229920005906 polyester polyol Polymers 0.000 description 7
- 239000005056 polyisocyanate Substances 0.000 description 7
- 229920001228 polyisocyanate Polymers 0.000 description 7
- 229920005604 random copolymer Polymers 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920005629 polypropylene homopolymer Polymers 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229920001400 block copolymer Polymers 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
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- 238000007906 compression Methods 0.000 description 4
- 238000001723 curing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000000539 dimer Substances 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 239000013638 trimer Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229920006262 high density polyethylene film Polymers 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920006124 polyolefin elastomer Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 238000009823 thermal lamination Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920008651 Crystalline Polyethylene terephthalate Polymers 0.000 description 1
- 235000018453 Curcuma amada Nutrition 0.000 description 1
- 241001512940 Curcuma amada Species 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001800 Shellac Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-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
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 235000021438 curry Nutrition 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000014438 salad dressings Nutrition 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The present utility model relates to a molded container and a package. A cup-shaped molded container (2) formed by press working a laminated packaging material (1) comprising a barrier layer (13), a protective layer (16) and a sealing layer (11), wherein the protective layer has a tensile strength (δ1% in the flow direction (MD) and the width direction (TD) MD ) (delta 1 ] TD ) All 500MPa to 2500MPa and their ratio (delta 1 #) MD )/δ1( TD ) 0.9 to 1.1) and covers one surface of the barrier layer, and a sealing layer covers the other surface of the barrier layerAnd (5) a surface. At least the barrier layer side surface of the protective layer is printed with identification marks (15) in advance by printing ink. The molded container has good moldability, and the identification mark displayed on the molded container has good dimensional stability.
Description
Technical Field
The present utility model relates to a molded container, and more particularly, to a cup-shaped molded container formed by press working a laminated packaging material including a barrier layer formed of a metal foil such as an aluminum foil.
In the present specification and claims, "inside" means the inside of the containing portion containing the content in the molded container of the present utility model, and "outside" means the opposite side thereof. The direction indicated by arrow Z in fig. 2 (a) is set to be up, and the opposite side is set to be down. Furthermore, the term "aluminum" is meant to include aluminum alloys in addition to pure aluminum.
Background
As a sealed package for storing contents (hereinafter, referred to as contents in the same meaning) such as foods, medicines, sanitary products, and electronic components, for example, a package formed of a molded container and a lid member having an outer peripheral edge portion fixed to a flange portion of the molded container so as to cover an opening of the molded container is used, the molded container is formed of a cup-shaped storage portion formed of a main body and a bottom portion surrounded by a lower end peripheral edge of the main body and an outward flange portion integrally provided at an upper end of the main body, and the cup-shaped storage portion is formed to store the contents in an upper opening.
In general, the molded container of the package is produced by pressing a laminate packaging material having excellent barrier effect against light, moisture, oxygen, etc., which is low-cost, lightweight, and high-strength, with a protective layer facing outward, wherein the laminate for a container is produced by laminating a synthetic resin film as a protective layer on one surface of a barrier layer formed of aluminum foil and a synthetic resin film as a sealing layer on the other surface of the barrier layer.
Among the above packages, a heat-sealed type package in which the outer peripheral edge portion of the lid is heat-sealed to the flange portion of the molded container is excellent in sealability. An example of such a heat-seal type package is disclosed in patent document 1. The package described in patent document 1 is a package formed of a flanged molded container formed by molding a laminated packaging material in which a polyethylene terephthalate film, an aluminum foil, a modified polypropylene film, and a polypropylene film are sequentially dry laminated so that the polypropylene film is innermost, and a lid formed of a lid laminate in which at least one surface of a barrier layer formed of an aluminum foil is covered with a sealing layer, and an outer peripheral edge portion of the lid laminate is heat-sealed to a flange portion of the molded container so as to cover an opening of the molded container.
Further, for various purposes, identification marks may be provided to the molded container so as to be visible from the outside. For example, the name, description (quality, composition, attention point, etc.), design, and trademark of the contents can be displayed by giving characters, figures, symbols, patterns, etc. to the outer surface of the main body of the molded container by some means. Further, the display can provide the package with the capability of recognizing, thereby improving the purchase desire of the consumer and ensuring the quality of the contents.
As means for imparting identification to the molded container, the following method can be considered: the sheet on which the identification mark is printed in advance is stuck to the outer surface of the molded container or the identification mark is formed on the outer surface of the molded container by printing ink, but it is uneconomical because it takes time and a dedicated machine. Thus, the following shaped containers were produced: a material having a visible identification mark from the outside is prepared as a laminated packaging material on a light-transmissive synthetic resin film serving as a protective layer of a molded container, and the laminated packaging material is set in a pressing mold so that the synthetic resin film serving as the protective layer is positioned to the outside, for example, by deep drawing, so that the visible identification mark from the outside is provided. The identification mark is often provided exclusively to the main body of the molded container, but may be located at the bottom or the flange depending on the purpose.
Prior art literature
Patent literature
Patent document 1: japanese patent No. 2866916
Disclosure of Invention
Problems to be solved by the utility model
However, when a molded container with a flange portion is manufactured by press working a blank formed of a laminated packaging material having an identification mark printed on a synthetic resin film serving as a protective layer, the laminated packaging material stretches and contracts along the shape of a mold, and therefore the following problems occur. That is, for example, when deep drawing is performed on a laminated packaging material for obtaining a flanged molded container, a compressive force acts in a region corresponding to a flange portion of the molded container in the laminated packaging material, and a large elongation is applied to regions corresponding to a main body portion and a bottom portion of the housing portion. As a result, the identification mark printed on the synthetic resin film as the protective layer of the laminated packaging material stretches accordingly. The result is a severely deformed, broken, blurred, and unclear identification mark.
Therefore, in order to prevent serious deformation, breakage, blurring, and blurring of the identification mark, it is necessary to consider that the identification mark may be severely deformed at the time of press working when the identification mark is printed on the synthetic resin film that becomes the protective layer. It is also necessary to envision how the identification mark is displayed in the shape of the molded container after press working. As a direct means for solving this problem, there is a design and control program for optimizing a device for printing identification marks on a synthetic resin film. However, it is not the best means because it takes time and cost.
In addition, when a laminated packaging material having identification marks printed on a synthetic resin film serving as a protective layer is subjected to press working, a strong stress acts on the laminated packaging material, and thus delamination may occur in the middle portion in the thickness direction of the obtained molded container. In addition, if the synthetic resin film that is the protective layer of the laminated packaging material is too hard, the laminated packaging material cannot be sufficiently stretched during press working, and thus the height of the resulting molded container (depth of the receiving portion) may not be ensured.
The 1 st object of the present utility model is to provide a molded container comprising: the identification mark displayed is free from deformation, displacement, or the like, or less in deformation, displacement, or the like, and has excellent dimensional stability (hereinafter also referred to as identification mark dimensional stability).
Further, the present utility model has as its 2 nd object to provide a molded container comprising: delamination does not occur between the body portion and the bottom portion of the housing portion in the thickness direction, and the height of the body portion (the depth of the housing portion) and the like can be sufficiently ensured, so that moldability (hereinafter sometimes referred to as container moldability) is good.
Means for solving the problems
As a result of repeated studies, the inventors of the present utility model have found that the above two objects can be achieved by optimizing the physical properties of a synthetic resin film which becomes a protective layer of a laminated packaging material, and have completed the present utility model, which is composed of the following means.
1) A molding container having a container portion formed by a main body portion and a bottom portion surrounded by a lower end portion periphery of the main body portion and having an upper opening for containing a content, the molding container being formed by subjecting a laminated packaging material having a barrier layer formed of a metal foil, a sealing layer covering one surface of the barrier layer, and a protective layer formed of a synthetic resin film and covering the other surface of the barrier layer to press working so that the protective layer faces the outside of the main body portion and the bottom portion of the container portion,
the synthetic resin film as the protective layer of the laminated packaging material has a tensile strength (δ1) in the flow direction (MD) (MD) ) And tensile strength (δ1) in the width direction (TD) (TD) ) Are 500MPa to 2500MPa and delta 1 (MD) And delta 1 (TD) Ratio (delta 1) (MD) /δ1 (TD) ) On at least the surface of the synthetic resin film facing the barrier layer side, a recognition mark formed of at least any one of characters, figures, symbols, and patterns is formed by a printing ink so as to be visible from the surface facing the other side of the synthetic resin film, and the recognition mark is displayed so as to be visible from the outside on at least one of the main body portion and the bottom portion of the housing portion.
2) The molded container according to 1) above, wherein the synthetic resin film has a tensile strength at break (. Delta.2) in a flow direction (MD) of the synthetic resin film (MD) ) And tensile strength at break (delta 2) in the width direction (TD) (TD) ) Are all 30MPa to 70MPa and delta 2 (MD) And delta 2 (TD) Ratio (delta 2) (MD) /δ2 (TD ) 0.9 to 1.1.
3) The molded container according to 1) above, wherein the synthetic resin film has an elongation at break (E) in a flow direction (MD) (MD) ) And elongation at break (E) in the width direction (TD) (TD) ) 500% -900% and E (MD) And E is connected with (TD) Ratio (E) (MD) /E (TD) ) 0.8 to 1.2.
4) The molded container according to 1) above, wherein the synthetic resin film has a heat dimensional change rate (CTE) in a flow direction (MD) (MD) ) At 90 ℃ and 30 minutes, and a heating dimensional change rate (CTE) in the width direction (TD) of-2.0 to 1.5 percent (TD) ) Under the same measurement conditions, is-1.5 to 1.5 percent and has CTE (MD) And CTE of (TD) Difference (CTE) (MD) -CTE (TD) ) The absolute value of (2) is 1.5% or less.
5) The molding container according to 1) above, wherein the identification mark is formed only on one of the two surfaces of the synthetic resin film, and the dynamic friction coefficient of the other surface on which the same identification mark is not formed is 0.1 to 0.5.
6) The molding container according to 1) above, wherein the synthetic resin film is a single-layer or multi-layer film made of polyolefin.
7) The molded container according to 1) above, wherein an adhesive layer is interposed between the barrier layer and the protective layer.
8) And a package body including a molded container formed of the molded container according to any one of 1) to 7) and containing a content in the containing portion, and a lid heat-sealed to an upper end of a main body portion of the containing portion, the lid covering an opening of the containing portion of the molded container.
9) A method for manufacturing a molded container having a housing portion formed by a main body and a bottom surrounded by a lower end periphery of the main body and having an upper opening for housing contents, characterized in that,
a laminated packaging material comprising a barrier layer formed of a metal foil, a sealing layer covering one surface of the barrier layer, and a protective layer formed of a synthetic resin film covering the other surface of the barrier layer is prepared, and the synthetic resin film serving as the protective layer of the laminated packaging material has a tensile strength (δ1) in the flow direction (MD) (MD) ) And tensile strength (δ1) in the width direction (TD) (TD) ) All 500MPa to ultra2500MPa and delta 1 (MD) And delta 1 (TD) Ratio (delta 1) (MD) /δ1 (TD) ) A synthetic resin film of 0.9 to 1.1, wherein a recognition mark formed of at least one of characters, figures, symbols and patterns is formed in advance by a printing ink on at least a surface of the synthetic resin film facing the barrier layer side so as to be visually recognized from the surface of the synthetic resin film facing the other side, and the protective layer is subjected to press working so as to face the outer sides of the main body portion and the bottom portion of the housing portion.
ADVANTAGEOUS EFFECTS OF INVENTION
In the molded container of 1), the synthetic resin film serving as the protective layer of the laminated packaging material used has characteristics in terms of its tensile strength (MPa) in the flow direction (MD) and width direction (TD) (hereinafter also referred to as characteristic structure 1). That is, both tensile strengths are limited to the same range, and the ratio of both tensile strengths is also limited to a prescribed range.
Therefore, when the synthetic resin film is supplied to a rotator for printing identification marks, the synthetic resin film is stretched in the flow direction (MD) thereof, but since the synthetic resin film has the characteristic configuration 1, elongation in the MD direction is relatively suppressed. On the other hand, if a laminated packaging material having a synthetic resin film printed with identification marks as a protective layer is supplied to a press mold, the laminated packaging material is moderately stretched during the molding process
In addition, according to such adjustment, the molded container of 1) is excellent in container moldability, and the identification mark is not deformed, displaced or the like on the displayed identification mark, and is excellent in dimensional stability. The identification mark is free from or less blurred, unclear, cracked, or the like on the printing ink layer on which the identification mark is formed, and is also excellent in printability (hereinafter also referred to as identification mark printability).
2) The synthetic resin film serving as a protective layer of the laminated packaging material used in the molded container of (a) is also characterized in terms of tensile strength at break (MPa), i.e., tensile strength at break (MPa) in the flow direction (MD) and the width direction (TD) (hereinafter also referred to as feature configuration 2). That is, since the tensile strength at both break is limited to the same range and the ratio of the tensile strength at both break is also limited to the predetermined range, both the container moldability and the dimensional stability of the identification mark are properly compatible, and the identification mark printability is also good.
3) The synthetic resin film serving as a protective layer of the laminated packaging material used in the molded container of (a) is also characterized in terms of elongation at break (%) at break in the flow direction (MD) and the width direction (TD) (hereinafter also referred to as feature structure 3). That is, since both elongations are limited to the same range and the ratio of both tensile strengths is limited to the predetermined range, both container formability and identification dimensional stability are properly compatible, and identification printability is also good.
4) The synthetic resin film serving as a protective layer of the laminated packaging material used in the molded container of (a) is also characterized in terms of the heating dimensional change rate (%) in the flow direction (MD) and the width direction (TD) (hereinafter also referred to as the feature structure 4). That is, the two heating dimensional change rates are limited to a prescribed range, and the absolute value of the difference between the two heating dimensional change rates is also limited to a prescribed range. Therefore, even if heat is applied to the synthetic resin film in the ink drying step after the identification mark is printed, the elongation and contraction in the flow direction (MD) and the width direction (TD) become uniform as a whole, and therefore the adhesion force to the identification mark (printed layer) of the synthetic resin film is not impaired. As a result, the molded container of the above 4) is also suitable for both the container moldability and the identification mark dimensional stability, and the identification mark printability is also good.
5) In the molded container of (2), the identification mark is formed only on one of the two surfaces of the synthetic resin film which is the protective layer of the laminated packaging material used, and the dynamic friction coefficient of the surface on which the same identification mark is not formed is limited to a predetermined range, so that the synthetic resin film exhibits moderate sliding and elongation at the time of press working for forming the molded container, and the container moldability and the dimensional stability of the identification mark are suitably compatible. Further, since the synthetic resin film is not excessively subjected to a local load, deformation, breakage, blurring, and the like of the identification mark are not generated, and the identification mark printability is also good.
6) In the molded container of (2), the synthetic resin film serving as the protective layer of the laminated packaging material used is a single-layer or multi-layer film made of polyolefin, so that the container moldability and the identification mark dimensional stability are properly combined, and the identification mark printability is also good.
7) In the molded container of (2), the adhesive layer is interposed between the barrier layer and the protective layer of the laminated packaging material used, so that occurrence of delamination in the vicinity of the identification mark can be suppressed, and the container moldability is particularly good. In addition, the identification mark has excellent dimensional stability and identification mark printability.
The package according to 8), wherein the identification mark displayed on the molded container has good dimensional stability and printability.
The method for manufacturing a molded container according to 9) enables molding of the molded container of 1) above with ease while ensuring dimensional stability of the identification mark and printing characteristics of the identification mark.
Drawings
Fig. 1 shows an embodiment of the molded container of the present utility model, in which (a) is a vertical sectional view and (b) is a perspective view from below.
Fig. 2 is a perspective view showing a part of a cutout of a specific example of a package using the molded container of the present utility model.
Fig. 3 is a schematic enlarged view showing one specific example of the laminated packaging material used in the production of the molded container of the present utility model, (a) is a sectional view cut in a direction perpendicular to the surface, and (b) is a perspective view showing a part cut in a direction perpendicular to the surface.
Fig. 4 is a plan view showing a synthetic resin film serving as a protective layer of a laminated packaging material used in the production of molded containers according to examples and comparative examples of the present utility model.
Description of the reference numerals
1: laminated packaging material
11: sealing layer
12: adhesive layer
13: barrier layer
14: adhesive layer
15: identification mark
16: protective layer
2: forming container
20: housing part
21: an opening
23: main body part
24: bottom part
3: content of
4: cover for a container
5: packaging body
Detailed Description
Hereinafter, an embodiment of the present utility model will be described with reference to fig. 1 to 3. However, fig. 1 to 3 do not limit the scope of the present utility model.
Fig. 1 shows one embodiment of a molded container of the present utility model, fig. 2 shows one embodiment of a package using a molded container of the present utility model, and fig. 3 shows one embodiment of a laminated packaging material used in the manufacture of a molded container of the present utility model.
In fig. 1, the molded container 2 includes a housing portion 20 and an outward flange portion 22, the housing portion 20 is formed by a main body portion 23 and a bottom portion 24 surrounded by a lower end periphery of the main body portion 23, and is opened upward to house the contents, the outward flange portion 22 is integrally formed in a protruding manner outward at an upper end of the main body portion 23 at a peripheral portion of an opening 21 of the housing portion 20, and the molded container 2 is formed with an identification mark 15 visible from the outside on an outer surface of the main body portion 23.
The shape and size of the main body 23 of the molded container 2 are not particularly limited. For example, when the molded container 2 is cup-shaped, the drawing rate may be about 0.45 to 0.8, and the height of the body 23 may be about 10 to 50 mm. The shape and size of the bottom 24 are not particularly limited. For example, when the bottom 24 is circular, the diameter may be about 40 to 100 mm. The shape and size of the opening 21 are not particularly limited. For example, the shape may be a circle, an ellipse, or a polygon, and in the case of the circular opening 21, the diameter may be about 20 to 140mm in terms of the size. The shape and size of the flange portion 22 are not particularly limited. For example, the shape may be similar to the opening 21, and in this case, the width dimension may be about 3 to 15 mm. An R portion 25 having a predetermined radius of curvature may be formed at the boundary between the main body portion 23 and the bottom portion 24. The radius of curvature of the R portion 25 is not particularly limited, and may be about 0.5 to 20 mm. The body 23 may be provided with a step 26. In addition, a step 27 may be optionally provided at the bottom 24.
The identification mark 15 is any one or combination of words, figures, symbols and patterns. The identification mark 15 may be a single color or multiple colors. The size of the identification mark 15 is not particularly limited. The identification mark 15 includes, specifically, a name, a description (quality, component, attention point, etc.), a design having design properties, a label, a logo, a trademark, a trade name, a unified beautification mark, a legal container package identification mark (for example, an aluminum recycling mark), an environmental protection mark, and the like of the content 3. As shown in fig. 1 (b), the identification mark 15 may be displayed at least on the main body 23, but may be displayed on the outer side of the flange 22 or the outer side of the bottom 24.
As shown in fig. 2, the molded container 2 can be used as the package 5 by accommodating the content 3 in the accommodating portion 20 and heat-sealing the outer peripheral edge portion of the lid 4 to the entire upper surface of the flange portion 22. The content 3 may be food, pharmaceutical products, chemical products, electronic parts, batteries, sanitary products, or other industrial products. Examples of the food include cream cheese, butter, jelly, sheep soup, pudding, miso, curry, pasta paste, fruit juice, salad dressing, and the like. The form of the content 3 is not limited, and may be liquid, semisolid, or solid. An annular heat seal portion X having a predetermined width is formed between the lower surface of the cover 4 and the upper surface of the flange portion 22, and the cover 4 and the flange portion 22 are heat-sealed at the heat seal portion X. The opening finger grip 41 is provided on the lid 4 so as to protrude outward from the flange 22, and the lid 4 is peeled off from the flange 22 of the molded container 2 by holding the opening finger grip 41, thereby opening the package 5.
The molded container 2 is manufactured by subjecting a blank punched out of the laminated packaging material 1 shown in fig. 3 to press working such as deep drawing and bulging. The circle shown by a one-dot chain line in fig. 3 represents the blank B. However, the shape of the blank B is not limited to a circle, and may be changed as appropriate according to the shape of the molded container 2 to be molded.
The laminated packaging material 1 includes a barrier layer 13, a sealing layer 11, and a protective layer 16, wherein the barrier layer 13 protects the content 3 of the package 5 from gas, water vapor, light, and the like, the sealing layer 11 is provided so as to cover one surface of the barrier layer 13 with the adhesive layer 12 interposed therebetween, the protective layer 16 is provided so as to cover the other surface of the barrier layer 13 with the adhesive layer 14 interposed therebetween, and the protective layer 16 has light transmittance, and identification marks 15 formed of at least one of characters, graphics, symbols, and patterns are printed with printing ink on at least the surface facing the barrier layer 13, in the present embodiment, at least the surface facing the barrier layer 13, of both surfaces of the protective layer 16. The laminated packaging material 1 is subjected to press working such as deep drawing forming and bulging forming so that the protective layer 16 is located on the outer surface side of the main body portion 23 and the bottom portion 24 and on the lower surface side of the outward flange portion 22, and the sealing layer 11 is located on the inner surface side of the main body portion 23 and the bottom portion 24 and on the upper surface side of the outward flange portion 22, whereby the molded container 2 is manufactured. The identification mark 15 can be visually recognized from the outside through the protective layer 16.
The barrier layer 13 of the laminated packaging material 1 is a layer for protecting the content 4 of the package 5 from gas, water vapor, light, and the like, and is formed of a metal foil such as aluminum foil, copper foil, or iron foil, and aluminum foil is preferably used. As the aluminum foil, in particular, those produced by JIS H4160 are preferably used: a 1000-, 3000-or 8000-series aluminum flexible material (O-material) specified in 1994. Specifically, examples of the material include a8021H-O material, a8079H-O material, and A1N30H-O material.
A base layer (not shown) formed of a predetermined chemical conversion treatment liquid is formed on one or both surfaces of the aluminum foil.
Examples of the chemical conversion treatment liquid include aqueous-alcoholic solutions containing phosphoric acid, chromium-based compounds, and fluorine-based compounds and/or binder resins. As chromiumThe fluorine-based compound may be a metal salt of a fluoride and/or a nonmetal salt of a fluoride, and the binder resin may be at least one resin selected from the group consisting of an acrylic resin, a chitosan derivative resin and a phenolic resin. The amount of the chemical conversion treatment liquid used is not particularly limited, and the amount of the chromium-based compound to be adhered is 0.1mg/m per one surface of the aluminum foil 2 ～50mg/m 2 The range of (3) is sufficient.
The thickness of the barrier layer 13 is not particularly limited, and is usually 50 μm to 200 μm in view of dead fold (dead hold) of the laminated packaging material 1, container formability, strength of the formed container 2, and the like.
The adhesive layer 12 interposed between the barrier layer 13 and the sealing layer 11 of the laminated packaging material 1 is formed of an adhesive. The adhesive layer 12 is an arbitrary layer, and is not necessarily required.
Examples of the adhesive for forming the adhesive layer 12 include a vinyl chloride-vinyl acetate copolymer adhesive, a polyester adhesive, an epoxy adhesive, a polyolefin adhesive, and a polyurethane adhesive. Among them, a polyurethane resin-based adhesive is preferable, and particularly, a two-part curable polyurethane resin-based adhesive is preferable because of its excellent effect of suppressing delamination. Polyol can be used as a main agent of the two-part curable polyurethane resin adhesive, and polyisocyanate can be used as a curing agent. Examples of the polyol include acrylic polyols, polyester polyols, polyether polyols, and the like, and polyester polyols are particularly preferred. Examples of the polyisocyanate include aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate, and dimers or trimers thereof. The thickness of the adhesive layer 12 is not particularly limited, but is usually 2 μm to 5 μm from the viewpoint of preventing delamination between the sealing layer 11 and the barrier layer 13 and the overall balance between rigidity and elongation of the sealing layer 11 and the protective layer 16.
The sealing layer 11 of the laminated packaging material 1 is formed of a heat-fusible resin and is provided from the entire inner surfaces of the main body 23 and the bottom 24 of the housing portion 20 of the molded container 2 to the entire upper surface of the flange portion 22.
Examples of the heat-fusible resin constituting the sealing layer 11 include polyolefin, polyvinyl alcohol, polysulfone, polystyrene, and the like. Among them, polyolefin is preferable, and for example, homo-polypropylene, propylene-ethylene block copolymer, propylene-ethylene random copolymer and polyethylene can be exemplified. Further, as the polyethylene, low density polyethylene, medium density polyethylene, and high density polyethylene can be exemplified. It should be noted that the polyolefin may be of an acid-modified type.
The heat-fusible resin may contain a filler, and examples of the filler include white clay, silica, talc, titanium dioxide, and carbon black.
The heat-fusible resin may contain an elastomer, and examples of the elastomer include a styrene-based elastomer and an olefin-based elastomer.
The sealing layer 11 may be a single layer made of the same type of heat-fusible resin, or may be a multilayer obtained by laminating 2 or more layers of the same type or different types of heat-fusible resins. The number of layers is not particularly limited, and is usually about 1 to 5.
The thickness of the entire sealing layer 11 is not particularly limited, but is usually 30 μm to 400 μm in view of heat sealability (sealability of the package 5), cushioning properties of the sealing layer 11, rigidity and overall balance of elongation of the sealing layer 11 and the protective layer 16, and the like.
The adhesive layer 14 sandwiched between the barrier layer 13 and the protective layer 16 of the laminated packaging material 1 is formed of an adhesive. The adhesive layer 14 is an arbitrary layer, and is not necessarily required. Delamination between the barrier layer 13 and the protective layer 16 during the forming process of the laminated packaging material 1 can be effectively prevented by the adhesive layer 14. At the same time, the dimensional stability of the identification mark after the molding process also becomes good, and in particular the dimensional stability of the identification mark 15 of the molded container 2 is optimized.
As the adhesive for forming the adhesive layer 14, the same adhesive as that for forming the adhesive layer 12 can be used. In particular, a two-part curable polyurethane resin adhesive is preferable in terms of facilitating moldability. Polyol can be used as a main agent of the two-part curable polyurethane resin adhesive, and polyisocyanate can be used as a curing agent. Examples of the polyol include acrylic polyols, polyester polyols, polyether polyols, and the like, and polyester polyols are particularly preferred. Examples of the polyisocyanate include aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate, and dimers or trimers thereof.
The thickness of the adhesive layer 14 is not particularly limited, and is usually 2 μm to 5 μm from the viewpoints of adhesion of the identification mark 15 to the barrier layer 13, follow-up property of the identification mark 15 to the barrier layer 13 at the time of molding the laminated packaging material 1, and suppression of delamination between the barrier layer 13 and the protective layer 16.
The protective layer 16 of the laminated packaging material 1 is formed of a synthetic resin film and is provided from the entire outer surface of the housing portion 20 of the molded container 2 to the entire lower surface of the flange portion 22. The synthetic resin film has a recognition mark 15 formed on at least the surface of the synthetic resin film on the side of the barrier layer 13, and the recognition mark 15 is required to be visible from the outside on the molded container 2, and thus is a light-transmissive film.
The synthetic resin film may be of a stretched type or a non-stretched type. Specific examples thereof include polyolefin films, polyester films, and polyamide films, and polyolefin films are preferable. Examples of the polyolefin film include a homo-polypropylene film, a propylene-ethylene block copolymer film, a propylene-ethylene random copolymer film, and a polyethylene film, and examples of the polyethylene film include a low-density polyethylene film, a linear low-density polyethylene film, a medium-density polyethylene film, and a high-density polyethylene film. The polyolefin film may be of an acid-modified type. Examples of the polyester film include a polyethylene terephthalate film, a PTT (polytrimethylene terephthalate film), and a polybutylene terephthalate film. As the polyamide film, a nylon film is exemplified. Particularly, when the depth of the storage portion 20 of the molded container 2 is deep and about 2 times the caliber, a propylene-ethylene block copolymer film or a propylene-ethylene random copolymer film is preferably used.
The synthetic resin film may contain an elastomer, and examples of the elastomer include a styrene-based elastomer and an olefin-based elastomer. When the elastomer is contained, impact resistance can be ensured, and the whitening (blushing) preventing effect can be improved.
In the synthetic resin film, various known waxes and/or surfactants as lubricants may be kneaded in advance or applied to the surface of the synthetic resin film by spraying or the like. In this case, the slidability can be ensured and the container formability can be improved. Examples of the wax include natural wax and/or synthetic wax. Examples of the synthetic wax include hydrocarbon-based synthetic waxes, hydrogenated waxes, silicone waxes (silicone waxes), fluorine-based waxes, and fatty acid amide-based waxes. Examples of the surfactant include at least one selected from the group consisting of anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants. The lubricant can also be used as a means for realizing the characteristic configuration 5 described later.
The synthetic resin film may contain a coloring material described later as long as the light transmittance is not excessively impaired and the visibility of the outside of the identification mark 15 can be ensured.
The protective layer 16 may be a single layer formed of a synthetic resin film of the same kind, or may be a multilayer formed by laminating 2 or more synthetic resin films of the same kind or different kinds. The number of layers is not particularly limited, and is usually about 1 to 5.
The thickness of the protective layer 16 is not particularly limited, and is usually 12 μm to 200 μm in terms of elongation at the time of press working of the laminated packaging material 1, rigidity of the molded container 2, and the like.
The printing ink for forming the identification mark 15 on the protective layer 16 is a composition in which a coloring material is dispersed in a binder resin, and contains an organic solvent.
Examples of the binder resin include at least one selected from the group consisting of polyurethane resins, acrylic resins, epoxy resins, polyolefin resins, polystyrene resins, polyvinyl chloride resins, polyamide resins, polycarbonate resins, phenolic resins, and polyester resins (polyethylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, and the like), which may be cured by an active energy ray, or cured by heat rather than an active energy ray. In addition, a binder resin curable at normal temperature may be used, and for example, a cellulose resin (cellulose, etc.), an acrylic varnish resin, and a novolac resin may be used.
Among the binder resins, polyurethane resins are preferable, and two-part curable polyurethane resins are particularly preferable. In this case, the young's modulus (JIS K7162) of the cured film is set to 70MPa to 400MPa, and the effect of suppressing the identification mark 15 from coming off or cracking from the protective layer 16 during press working can be improved. Polyol is used as a main agent of the two-part curable polyurethane resin, and polyisocyanate is used as a curing agent. Examples of the polyol include acrylic polyols, polyester polyols, polyether polyols, and the like, and polyester polyols are particularly preferred. Examples of the polyisocyanate include aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate, and dimers or trimers thereof.
When the Young's modulus (JIS K7162) of the cured film of the binder resin is 70MPa to 400MPa, the identification mark 15 is preferably not detached from the protective layer 16 or cracked during press working. From this viewpoint, the cured film further preferably has a tensile strength at break (JIS K7161) of 25MPa to 60MPa and an elongation at break of 50% to 400%.
Examples of the coloring material include pigments and/or dyes. Examples of pigments include organic or inorganic pigments such as titanium dioxide, zinc oxide, glossy white, pyrite, barium carbonate, calcium carbonate, precipitated silica, aerosil, talc, alumina white, mica, synthetic calcium silicate, magnesium carbonate, barium carbonate, carbon black, magnetite, and iron oxide red. Examples of the dye include anthraquinone dyes, azo dyes, and quinoline dyes. The content of the coloring material in the printing ink is not particularly limited, but is usually 10 to 60% by mass, preferably 15 to 50% by mass, in view of the appearance such as the sharpness of the identification mark 15.
Examples of the organic solvent include toluene, xylene, acetone, methyl ethyl ketone, methanol, ethanol, isopropanol, ethyl acetate, propyl acetate, and the like.
As means for forming the identification mark 15 by applying a printing ink at least to the inner surface of the synthetic resin film, gravure printing is exemplified. The printing ink may be additionally printed on the outer surface of the synthetic resin film.
Further, the synthetic resin film serving as the protective layer 16 exhibits the following behavior in each of the printer that prints the identification mark 15 and the press that forms the molded container 2.
First, in the printer, after the identification mark 15 is printed on the synthetic resin film, when the synthetic resin film is wound up by the roll, tension is applied to the synthetic resin film in the flow direction (MD), and therefore, if the synthetic resin film is excessively soft, the synthetic resin film is excessively stretched in the printer. As a result, the identification mark 15 cannot follow the elongation of the synthetic resin film, and the adhesion between the two is reduced.
When the blank formed of the laminated packaging material 1 is subjected to deep drawing by a press, for example, the portion corresponding to the flange portion 22 of the molded container 2 in the region to be molded of the laminated packaging material 1 is compressed, and conversely, the portions corresponding to the main body portion 23 and the R portion 25 are stretched. At this time, the identification mark 15 also contracts or expands in the deforming direction of the laminated packaging material 1, although this is also affected by its position. As a result, cracking occurs in the identification mark 15, or the shape thereof is deformed.
In view of the above, the synthetic resin film serving as the protective layer 16 is provided with the following characteristic configuration 1. It is considered that the feature configuration 1 makes the molded container 2 compatible with both the container moldability and the dimensional stability of the identification mark 15.
The characteristic constitution 1: tensile Strength (. Delta.1) at maximum stress in flow direction (MD) of synthetic resin film (MD) ) And tensile strength (. Delta.1) at maximum stress in the width direction (TD) (TD) ) Respectively 500MPa to 2500MPa, preferably 500MPa to ultra-high1000MPa, and a ratio of two tensile strengths (. Delta.1) (MD) /δ1 (TD) ) Is limited to 0.9 to 1.1, preferably 0.95 to 1.05.
In order to achieve both the container moldability and the identification mark dimensional stability more appropriately, the synthetic resin film serving as the protective layer 16 further has the following feature configuration 2 and/or feature configuration 3.
Characteristic constitution 2: tensile strength at break (. Delta.2) in flow direction (MD) of synthetic resin film (MD) ) And tensile strength at break (delta 2) in the width direction (TD) (TD) ) Respectively, is defined as 30MPa to 70MPa, preferably 30MPa to 50MPa, and their ratio (. Delta.2) (MD) )/(δ2 (TD) ) The limitation is 0.9 to 1.1, preferably 0.95 to 1.05.
Characteristic constitution 3: elongation at break (E) in the flow direction (MD) of the synthetic resin film (MD) ) And elongation at break (E) in the width direction (TD) (TD) ) Respectively 500 to 900%, preferably 500 to 800%, and their ratio (E) (MD) )/(E (TD) ) The limitation is 0.8 to 1.2, preferably 0.9 to 1.1.
The synthetic resin film serving as the protective layer 16 is particularly preferably provided with all of the feature configuration 1, the feature configuration 2, and the feature configuration 3 from the viewpoint of achieving both the container moldability and the identification dimensional stability.
In addition, when the identification mark 15 formed on the synthetic resin film serving as the protective layer 16 is formed of a heat-curable printing ink, the synthetic resin film after printing is subjected to a relatively high-temperature drying step. In this case, generally, the synthetic resin film expands in the flow direction (MD) of the rotary machine and contracts in the width direction (TD), and thus the adhesion force between the synthetic resin film and the identification mark 15 may be reduced in response to the expansion, although the adhesion force is also affected by the type of synthetic resin used as a raw material.
In view of the above, the synthetic resin film serving as the protective layer 16 may further include the following feature configuration 4, whereby it is easier to achieve both of container formability and identification mark dimensional stability.
Characteristic constitution 4: heating in the flow direction (MD) of the synthetic resin film at 90℃and under measurement conditions of 30 minutesRate of dimensional Change (CTE) (MD) ) A heat dimensional change rate (CTE) in the width direction (TD) of the synthetic resin film defined as-2.0% to 1.5% and measured at 90 ℃ for 30 minutes (TD) ) Is defined as-2.0% to 1.5%, and their difference (CTE) (MD) -CTE (TD) ) The absolute value of (2) is limited to 1.5% or less, that is, 0 to 1.5%, preferably 0 to 1.0%.
Further, as described above, when the blank formed of the laminated packaging material 1 is subjected to press working, particularly deep drawing working, the synthetic resin film serving as the protective layer 16 is compressed or stretched according to the deformation direction of the molded container 2. In view of the above, the synthetic resin film to be the protective layer 16 preferably has the following characteristic configuration 5, whereby both of the container formability and the identification mark dimensional stability are further suitably achieved, and the identification mark printability is also optimized. The dynamic friction coefficient can also be adjusted by the combination of the aforementioned lubricants.
Characteristic constitution 5: the dynamic friction coefficient of the outer surface of the synthetic resin film is limited to 0.1 to 0.5, preferably 0.1 to 0.3.
The laminated packaging material 1 can be produced by various known methods, for example, a dry lamination method, a melt extrusion lamination method, a thermal lamination method, and the like, and these methods may be combined.
Although not shown, one embodiment of the cover 4 is formed of a cover-side protective layer, an adhesive layer, a cover-side barrier layer, an adhesive layer, and a cover-side sealing layer in this order from the top. Wherein one or both of the adhesive layers can be omitted.
The cover-side protective layer is located on the cover 4, and is a layer for protecting the package 5 and its content 3 from an external impact or the like, and is composed of various known synthetic resins. As the synthetic resin, a synthetic resin capable of satisfying the protective layer, preferably polyester and/or polyolefin, among biomass-derived synthetic resins and synthetic resins derived from fossil resources can be suitably used. Polyethylene terephthalate is preferred as the polyester, and polyethylene, polypropylene, propylene-ethylene copolymer (block, random), and homo-polypropylene are preferred as the polyolefin. The protective layer may be formed of a top coating agent (overcoating agent) such as nitrocellulose, shellac resin, epoxy resin, urethane resin, chlorinated polyolefin resin, acrylic resin, or vinyl chloride-vinyl acetate copolymer. The protective layer may be a single layer or may be a multilayer formed of at least 2 separate layers. The thickness of the whole protective layer is not particularly limited, and is usually 5 μm to 30 μm.
The adhesive layer on the upper side is an arbitrary layer interposed between the protective layer and the barrier layer, and can be formed of the same adhesive as the adhesive forming the two adhesive layers 12 (14) of the laminated packaging material 1. The thickness of the upper adhesive layer is not particularly limited, and is usually 1 μm to 5 μm.
The lid-side barrier layer has a function of protecting the contents 3 of the package 5 from light, gas, water vapor, and the like together with the molded container 2. The barrier layer is formed of, for example, a metal foil, and iron foil, stainless steel foil, and aluminum foil can be used. The metal foil may be provided with a base layer formed of the chemical conversion treatment liquid on one or both surfaces thereof. The thickness of the barrier layer is not particularly limited, and is usually 5 μm to 40 μm.
The lower adhesive layer is any layer interposed between the lid-side barrier layer and the lid-side seal layer, and may be composed of the same adhesive as that of the upper adhesive layer. The thickness of the lower adhesive layer is not particularly limited, and is usually 1 μm to 5 μm.
The lid-side seal layer is a layer thermally welded to the seal layer 11 present on the upper surface of the flange 22 of the molded container 2, and is composed of various known thermally-weldable resins. As the heat-fusible resin, the same heat-fusible resin as that of the sealing layer 11 of the molded container 2 can be used, and in particular, polyolefin is preferably used. The lid-side sealing layer may be a single layer made of the same type of heat-fusible resin, or may be a multilayer obtained by laminating 2 or more layers of the same type or different types of heat-fusible resins. The number of layers is not particularly limited, and is usually about 1 to 5. The thickness of the entire sealing layer is not particularly limited, and is usually 10 μm to 50 μm.
The cap 4 is formed of a cap-side protective layer, a cap-side barrier layer formed of a metal vapor-deposited film, an adhesive layer, a cap-side barrier layer formed of a metal vapor-deposited film, and a cap-side sealing layer in this order from the top. The metal deposition film may be directly formed on the lower surface of the cap-side protective layer or directly formed on the upper surface of the sealing layer. Examples of the metal include aluminum.
The cover 4 is formed by punching out a sheet-like material manufactured by various known methods such as a dry lamination method, a melt extrusion lamination method, a thermal lamination method, a gravure coating method, and the like. The shape and size of the cover 4 are not particularly limited, and can be set purposefully according to the shape and size of the opening 21 and the flange 22 of the molded container 2. An unsealing finger-grip portion 41 (fig. 3) may be provided on the peripheral edge of the lid 4.
Examples
Hereinafter, examples and comparative examples of the present utility model will be described. The present utility model is not limited to the examples.
In the following description of examples and comparative examples, the abbreviations for synthetic resin films serving as protective layers of laminated packaging materials are shown below.
C-rPP: non-stretched film formed from extruded monolayer of propylene-ethylene random copolymer
C-hPP: stretch free films formed from extruded monolayers of homo-polypropylene
LLDPE: film formed by extruding single layer from linear low density polyethylene film
HDPE: film formed from extruded monolayer of high density polyethylene film
C- (rPP/bPP/rPP): a stretch-free coextruded three-layer polypropylene film O-Ny formed from a propylene-ethylene random copolymer layer, a propylene-ethylene block copolymer layer, and a propylene-ethylene random copolymer layer: stretched nylon film
C-PET: stretch-free crystalline polyethylene terephthalate film
O-PBT: stretched polybutylene terephthalate film
O-PET: stretched polyethylene terephthalate film
O-rPP: non-stretched film formed from extruded monolayer of propylene-ethylene random copolymer
In the following examples, as a printing ink used for printing identification marks on a synthetic resin film serving as a protective layer of a laminated packaging material, an organic solvent-based heat-curable black ink in which Carbon Black (CB) serving as a pigment was dispersed in an acrylic resin serving as a binder was used. The abbreviations for the black inks are shown below.
A (30): the content of carbon black was 30 mass%
B (5): the content of carbon black was 5% by mass
C (20): the content of carbon black was 20 mass%
D (65): carbon black content 65% by mass
E (35): the content of carbon black was 35% by mass
F (15): the content of carbon black was 15 mass%
G (40): the content of carbon black was 40 mass%
Example 1
Production of laminated packaging Material
As a synthetic resin film F for forming the protective layer, C-rPP (width 71mm, length 550mm, thickness 30 μm) was prepared. Both sides of the C-rPP were corona treated. The resultant synthetic resin film had a tensile strength δ1 in the flow direction (MD) of the aforementioned C-rPP (MD) :580MPa, and tensile strength δ1 in the widthwise direction (TD) (TD) :530MPa, ratio of both delta 1 (MD) /δ1 (TD) :1.09 tensile Strength at break delta 2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) at 45MPa (TD) :33MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.36 (MD) : elongation at break E in 770% in the width direction (TD) (TD) :830%, ratio E of both (MD) /E (TD) :0.93, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 1.9% (TD) ：-1.7％、CTE (MD) -CTE (TD) Absolute value of (2): 0.2%, coefficient of dynamic friction of surface: 0.10.
then, as shown in FIG. 4, 10 circles S (radius 85 mm) were drawn on one side of C-rPP using compasses. Each circle S is a predetermined line for producing a molding material described later, and is drawn with a broken line for convenience. The circles S are aligned so that the centers thereof are positioned on the center line of the width extending in the longitudinal direction of the C-rPP, and the distance between the centers is equal to 90 mm.
Then, for all 10 circles S, identification marks 15 (upper base 9mm, lower base 3mm, height 8 mm) of a substantially isosceles trapezoid shape formed by the printing ink a (30) were printed one by one on one of the radii of the respective circles S. The center of gravity of the identification mark 15 is located at a position 30mm from the center of the circle S. In addition, the upper and lower bottoms of the identification mark 15 are parallel to one side of the C-rPP.
The reason why the identification mark 15 is formed in a substantially isosceles trapezoid is as follows. That is, first, when a molded container is produced by molding a blank punched out of a laminated packaging material having a synthetic resin film as a protective layer using a deep drawing molding apparatus described later, a circular portion serving as a flange portion is fixed and a portion surrounded by the circular portion is stretched. At this time, since the radial extension force of the circle S and the circumferential compression force of the circle S are applied to the blank, the radial extension force of the circle S and the circumferential compression force of the circle S are also applied to the identification mark 15. However, since the expansion force and the compression force gradually decrease from the peripheral edge portion of the circle S toward the center, the circumferential compression amount and the radial expansion amount of the identification mark 15 also gradually decrease from the portion near the peripheral edge portion of the circle S toward the center. As a result, the shape of the identification mark 15 is corrected from a substantially isosceles trapezoid to a substantially square.
The synthetic resin film F for the protective layer was produced by the above steps.
Then, a base layer was formed on both sides of an aluminum foil (JIS H4160: A8079-O material) having a thickness of 120 μm using a chemical conversion treatment liquid. The chemical conversion treatment liquid is a solution formed by phosphoric acid, polyacrylic acid, chromium (III) salt compound, water and alcohol. The coating amount was such that the amount of chromium deposited was 10mg/m on each side of the aluminum alloy foil 2 Is a combination of the amounts of (a) and (b).
Then, two-part curable polyurethane adhesives containing polyester polyol as a main component and polyisocyanate as a curing agent were applied to both sides of the aluminum foil after the treatment so that the thickness of each cured adhesive became 3 μm, thereby forming adhesive layers.
Then, a surface of the C-rPP on which the identification mark 15 was printed was bonded to the surface of the adhesive layer of one of the aluminum foils, and a 300 μm thick single-layer non-stretch homopolypropylene film was bonded as a heat-fusible resin film to the surface of the adhesive layer of the other, and then heat curing was performed at 40 ℃ for 8 days to prepare a laminated packaging material.
Manufacture of shaped containers
The laminated packaging material was then set in a deep drawing apparatus (manufactured by Amada) having a male die and a female die of a predetermined size. The target value of the height (depth of the storage portion) of the main body portion of the molded container obtained in this molding apparatus was 30mm. Then, using the molding apparatus, the laminated packaging material was punched out into a round blank having a radius of 85mm, and the laminated packaging material was subjected to deep drawing so that the protective layer became the outer surface side of the receiving portion, thereby producing a molded container having the shape shown in fig. 1.
The molded container is formed in the following manner: the opening of the housing portion was circular (diameter: 50.5 mm), and an annular flange portion (width: 4.5 mm) having an outer shape similar to the shape of the opening was bulged outward in the horizontal direction at the periphery of the opening. The main body was in the shape of an inverted cone (angle: 6 °, height: 30.0 mm), and the bottom was in the shape of a circle (diameter: 44.2 mm). An R portion having a radius of curvature of 10mm is formed at the boundary between the main body portion and the bottom portion.
The substantially square identification mark 15 (target value: longitudinal length 10mm, lateral length 10 mm) formed of the printing ink a (30) is formed on the side surface of the main body of the molded container so as to be visually formed in parallel with the flange of the molded container (see fig. 3).
A total of 10 molded containers were produced by the above method.
Example 2
C-hPP (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the C-hPP (MD) :770MPa, and tensile strength δ1 in the widthwise direction (TD) (TD) :760MPa, ratio of two, delta 1 (MD) /δ1 (TD) :1.01 tensile Strength at break δ2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) at 45MPa (TD) :34MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.32 (MD) : elongation at break E in width direction (TD) of 640% (TD) :700%, ratio E of both (MD) /E (TD) :0.91, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -0.7% of the heating dimensional change rate CTE in the width direction (TD) (TD) ：-0.7％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, coefficient of dynamic friction of surface: 0.20. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 3
C-hPP (width 71mm, length 550mm, thickness 40 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the C-hPP (MD) :980MPa, tensile Strength δ1 in the Transverse Direction (TD) (TD) :960MPa, ratio of both delta 1 (MD) /δ1 (TD) :1.02 tensile Strength at break delta 2 in flow direction (MD) (MD) :46MPa, and tensile strength at break δ2 in the width direction (TD) (TD) :47MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.98 (MD) :690% elongation at break E in the width direction (TD) (TD) :670%, ratio E of the two (MD) /E (TD) :1.03, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 0.6% (TD) ：-0.6％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, of surface Coefficient of dynamic friction: 0.30. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 4
As a synthetic resin film for forming the protective layer, C-rPP (width 71mm, length 550mm, thickness 40 μm) was prepared. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the C-rPP (MD) :540MPa, tensile Strength δ1 in the width direction (TD) (TD) :505MPa, ratio of both delta 1 (MD) /δ1 (TD) :1.07 tensile Strength at break delta 2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) at 63MPa (TD) :55MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.15 (MD) : elongation at break E in the width direction (TD) of 520% (TD) :680%, ratio E of the two (MD) /E (TD) :0.76, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -0.9% of the heating dimensional change rate CTE in the width direction (TD) (TD) ：-1.2％、CTE (MD) -CTE (TD) Absolute value of (2): 0.30%, coefficient of dynamic friction of surface: 0.20. in addition, B (5) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 5
LLDPE (width 71mm, length 550mm, thickness 40 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of LLDPE (MD) :500MPa, tensile Strength δ1 in the width direction (TD) (TD) :550MPa, and a ratio of two delta 1 (MD) /δ1 (TD) :0.91 tensile Strength at break delta 2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) of 35MPa (TD) :31MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.13 (MD) :680% elongation at break E in the width direction (TD) (TD) :620%, ratio E of the two (MD) /E (TD) :1.10, flow direction (MD) Heat dimensional Change Rate CTE (MD) :0.8% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.9％、CTE (MD) -CTE (TD) Absolute value of (2): 0.1%, coefficient of dynamic friction of surface: 0.40. in addition, C (20) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 6
HDPE (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the HDPE (MD) :820MPa, and widthwise (TD) tensile Strength δ1 (TD) :870MPa, ratio of two delta 1 (MD) /δ1 (TD) : tensile strength at break δ2 in flow direction (MD) of 0.94 (MD) : tensile strength at break δ2 in width direction (TD) at 41MPa (TD) :35MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.17 (MD) : elongation at break E in the width direction (TD) of 570% (TD) :520%, ratio E of the two (MD) /E (TD) :1.10, flow direction (MD) Heat dimensional Change Rate CTE (MD) :0.5% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.6％、CTE (MD) -CTE (TD) Absolute value of (2): 0.1%, coefficient of dynamic friction of surface: 0.30. in addition, C (20) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 7
As a synthetic resin film for forming the protective layer, C-rPP (width 71mm, length 550mm, thickness 60 μm) was prepared. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the C-rPP (MD) :790MPa, tensile Strength δ1 in the Transverse Direction (TD) (TD) :720MPa, ratio of two delta 1 (MD) /δ1 (TD) :1.10 tensile Strength at break δ2 in flow direction (MD) (MD) :49MPa and width direction (TD)Tensile strength at break delta 2 (TD) :38MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.29 (MD) : elongation at break E in the width direction (TD) of 620% (TD) :680%, ratio E of the two (MD) /E (TD) :0.91, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 0.6% (TD) ：-0.6％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, coefficient of dynamic friction of surface: 0.20. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 8
As a synthetic resin film for forming the protective layer, C-rPP (width 71mm, length 550mm, thickness 80 μm) was prepared. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the C-rPP (MD) :790MPa, tensile Strength δ1 in the Transverse Direction (TD) (TD) :720MPa, ratio of two delta 1 (MD) /δ1 (TD) :1.10 tensile Strength at break δ2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) of 49MPa (TD) :48MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.02 (MD) :680% elongation at break E in the width direction (TD) (TD) :680%, ratio E of the two (MD) /E (TD) :1.0, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 0.4% (TD) ：-0.4％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, coefficient of dynamic friction of surface: 0.20. a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 9
C-hPP (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having tensile strength in the flow direction (MD) of the C-hPPδ1 (MD) :770MPa, and tensile strength δ1 in the widthwise direction (TD) (TD) :760MPa, ratio of two, delta 1 (MD) /δ1 (TD) :1.01 tensile Strength at break δ2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) at 45MPa (TD) :45MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.0 (MD) :680% elongation at break E in the width direction (TD) (TD) :700%, ratio E of both (MD) /E (TD) :0.97, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -0.7% of the heating dimensional change rate CTE in the width direction (TD) (TD) ：-0.7％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, coefficient of dynamic friction of surface: 0.20. in addition, D (65) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 10
C- (rPP/bPP/rPP) (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming the protective layer. Becomes a synthetic resin film having a tensile strength δ1 in the flow direction (MD) of C- (rPP/bPP/rPP) (MD) :650MPa, and widthwise (TD) tensile Strength δ1 (TD) :680MPa, and the ratio delta 1 of the two (MD) /δ1 (TD) :0.96, tensile Strength at break δ2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) of 50MPa (TD) :25MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 2.0 (MD) : elongation at break E in the width direction (TD) of 460% (TD) :510%, ratio of both E (MD) /E (TD) :0.90, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 0.4% (TD) ：0.7％、CTE (MD) -CTE (TD) Absolute value of (2): 1.10%, coefficient of dynamic friction of surface: 0.20. in addition, E (35) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 11
C- (rPP/bPP/rPP) (width 71mm, length 550mm, thickness 45 μm) was prepared as a synthetic resin film for forming the protective layer. Becomes a synthetic resin film having a tensile strength δ1 in the flow direction (MD) of C- (rPP/bPP/rPP) (MD) :720MPa, and tensile strength delta 1 in width direction (TD) (TD) :760MPa, ratio of two, delta 1 (MD) /δ1 (TD) :0.95, tensile strength at break δ2 in flow direction (MD) (MD) : tensile strength at break δ2 in width direction (TD) of 48MPa (TD) :47MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.02 (MD) : elongation at break E in the width direction (TD) of 720% (TD) :760%, ratio E of the two (MD) /E (TD) :0.95, flow direction (MD) Heat dimensional Change Rate CTE (MD) : -a heating dimensional change rate CTE in the width direction (TD) of 0.6% (TD) ：-0.5％、CTE (MD) -CTE (TD) Absolute value of (2): 0.10%, coefficient of dynamic friction of surface: 0.20. in addition, F (15) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 12
O-Ny (width 71mm, length 550mm, thickness 25 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of O-Ny (MD) :2500MPa, widthwise (TD) tensile Strength δ1 (TD) :2300MPa, and a ratio of two, delta 1 (MD) /δ1 (TD) :1.09 tensile Strength at break delta 2 in flow direction (MD) (MD) :240MPa, and tensile strength at break δ2 in the width direction (TD) (TD) :270MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.89 (MD) : elongation at break E in the width direction (TD) of 100% (TD) :100% of the ratio E of the two (MD) /E (TD) :1.00, flow direction (MD) Heat dimensional Change Rate CTE (MD) :1.7% in the width direction (TD)Thermal dimensional change rate CTE (TD) ：0.6％、CTE (MD) -CTE (TD) Absolute value of (2): 1.10%, coefficient of dynamic friction of surface: 0.25. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 13
C-PET (width 71mm, length 550mm, thickness 35 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having tensile strength delta 1 in the flow direction (MD) of the C-PET (MD) :2100MPa, tensile Strength δ1 in the Transverse Direction (TD) (TD) :2120MPa, ratio of two to δ1 (MD) /δ1 (TD) :0.99, tensile Strength at break δ2 in flow direction (MD) (MD) : tensile strength at break delta 2 in width direction (TD) of 260MPa (TD) :265MPa, ratio delta 2 of the two (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.98 (MD) : elongation at break E in the width direction (TD) of 150% (TD) :130%, ratio of both E (MD) /E (TD) :1.15, flow direction (MD) Heat dimensional Change Rate CTE (MD) :1.2% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.2％、CTE (MD) -CTE (TD) Absolute value of (2): 1.00%, coefficient of dynamic friction of surface: 0.50. in addition, G (40) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Example 14
O-PBT (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the O-PBT (MD) :1540MPa, and widthwise (TD) tensile Strength δ1 (TD) :1530MPa, ratio of both δ1 (MD) /δ1 (TD) :1.01 tensile Strength at break δ2 in flow direction (MD) (MD) :80MPa, tensile strength at break δ2 in the widthwise direction (TD) (TD) :78MPa, ratio of both delta 2 (MD) /δ2 (TD) :1.03 flow directionElongation at break E of (MD) (MD) : elongation at break E in the width direction (TD) of 390% (TD) :400% of the ratio E of the two (MD) /E (TD) :0.98, flow direction (MD) Heat dimensional Change Rate CTE (MD) :0.2% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：-0.1％、CTE (MD) -CTE (TD) Absolute value of (2): 0.30%, coefficient of dynamic friction of surface: 0.30. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 1
LLDPE (width 71mm, length 550mm, thickness 50 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of LLDPE (MD) :240MPa, tensile Strength δ1 in the width direction (TD) (TD) :300MPa, ratio of two delta 1 (MD) /δ1 (TD) :0.80, tensile strength at break δ2 in flow direction (MD) (MD) :33MPa, tensile strength at break δ2 in the width direction (TD) (TD) :27MPa, ratio of both delta 2 (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.22 (MD) : elongation at break E in the width direction (TD) of 660% (TD) :800% ratio E of the two (MD) /E (TD) :0.83, flow direction (MD) Heat dimensional Change Rate CTE (MD) :0.6% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.8％、CTE (MD) -CTE (TD) Absolute value of (2): 0.2%, coefficient of dynamic friction of surface: 0.40. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 2
O-Ny (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of O-Ny (MD) :2600MPa, and a tensile strength δ1 in the widthwise direction (TD) (TD) :2100MPa, ratio of two delta1 (MD) /δ1 (TD) :1.24 tensile Strength at break delta 2 in flow direction (MD) (MD) : tensile strength at break delta 2 in width direction (TD) of 250MPa (TD) :290MPa, and ratio delta 2 of the two (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.86 (MD) : elongation at break E in 120% in width direction (TD) (TD) :100% of the ratio E of the two (MD) /E (TD) :1.20 Heat dimensional Change Rate CTE in flow direction (MD) (MD) :2.2% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：2.5％、CTE (MD) -CTE (TD) Absolute value of (2): 0.30%, coefficient of dynamic friction of surface: 0.10. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 3
O-PET (width 71mm, length 550mm, thickness 20 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the O-PET (MD) :3750MPa, and tensile Strength δ1 in the width direction (TD) (TD) :3880MPa, ratio of two delta 1 (MD) /δ1 (TD) :0.97, tensile Strength at break delta 2 in flow direction (MD) (MD) :220MPa, tensile strength at break δ2 in the width direction (TD) (TD) :230MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.96 (MD) : elongation at break E in 90% in width direction (TD) (TD) :85%, ratio E of both (MD) /E (TD) :1.06, flow direction (MD) Heat dimensional Change Rate CTE (MD) :1.2% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：1.3％、CTE (MD) -CTE (TD) Absolute value of (2): 0.10%, coefficient of dynamic friction of surface: 0.60. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 4
Preparation of HDPE (width 7)1mm, 550mm in length, 50 μm in thickness) as a synthetic resin film forming the protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the HDPE (MD) :1050MPa, tensile Strength δ1 in the width direction (TD) (TD) :1400MPa, and ratio of two delta 1 (MD) /δ1 (TD) :0.75, tensile strength at break δ2 in flow direction (MD) (MD) :40MPa, tensile strength at break δ2 in the width direction (TD) (TD) :33MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 1.21 (MD) : elongation at break E in width direction (TD) of 580% (TD) :350%, ratio E of the two (MD) /E (TD) :1.66, flow direction (MD) Heat dimensional Change Rate CTE (MD) :0.5% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.5％、CTE (MD) -CTE (TD) Absolute value of (2): 0%, coefficient of dynamic friction of surface: 0.25. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 5
O-rPP (width 71mm, length 550mm, thickness 30 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the O-rPP (MD) :2000MPa, and widthwise (TD) tensile Strength δ1 (TD) :4000MPa, ratio of both delta 1 (MD) /δ1 (TD) :0.50, tensile Strength at break δ2 in flow direction (MD) (MD) :150MPa, tensile strength at break δ2 in the width direction (TD) (TD) :350MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.43 (MD) : elongation at break E in the width direction (TD) of 200% (TD) :50% of the ratio E of the two (MD) /E (TD) :4.00, flow direction (MD) Heat dimensional Change Rate CTE (MD) :3.0% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：1.0％、CTE (MD) -CTE (TD) Absolute value of (2): 2.0%, coefficient of dynamic friction of surface: 0.40.In addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
Comparative example 6
O-PBT (width 71mm, length 550mm, thickness 20 μm) was prepared as a synthetic resin film for forming a protective layer. Becomes a synthetic resin film having a tensile strength delta 1 in the flow direction (MD) of the O-PBT (MD) :3000MPa, and tensile strength δ1 in the widthwise direction (TD) (TD) :2900MPa, ratio of both δ1 (MD) /δ1 (TD) :1.03 tensile Strength at break δ2 in flow direction (MD) (MD) :210MPa, and tensile strength at break δ2 in the width direction (TD) (TD) :220MPa, ratio delta 2 of both (MD) /δ2 (TD) : elongation at break E in flow direction (MD) of 0.95 (MD) : elongation at break E in the width direction (TD) of 150% (TD) :150% of the ratio E of the two (MD) /E (TD) :1.00, flow direction (MD) Heat dimensional Change Rate CTE (MD) :2.1% Heat dimensional Change Rate CTE in the width direction (TD) (TD) ：0.2％、CTE (MD) -CTE (TD) Absolute value of (2): 1.90%, coefficient of dynamic friction of surface: 0.30. in addition, a (30) was used as the printing ink.
A total of 10 molded containers were produced under the same conditions as in example 1.
In examples 1 to 14 and comparative examples 1 to 6, the tensile strength at break and the elongation at break were measured based on JIS K7161. The heating dimensional change rate was measured under heating conditions at 90℃and 30 minutes, based on JIS K7133, with the original dimension being 120mm in the flow direction (MD) and 120mm in the width direction (TD). The dynamic friction coefficient is an actual measurement value based on JIS K7125.
Table 1 summarizes the physical properties of the synthetic resin films used in examples 1 to 14 and the types of printing inks used for the printing of the identification marks, and table 2 summarizes the physical properties of the synthetic resin films used in comparative examples 1 to 6 and the types of printing inks used for the printing of the identification marks.
TABLE 1
TABLE 2
[ evaluation of molded Container ]
(identification sign dimensional stability)
For the identification marks 15 displayed in the main body of each 10 molded containers in examples 1 to 14 and comparative examples 1 to 6, the average value of the addition of (i) the longitudinal dimension and the transverse dimension, (ii) the difference between the longitudinal dimension and the transverse dimension (maximum-minimum value), (iii) the standard deviation of each of the longitudinal dimension and the transverse dimension, and the identification mark dimensional stability was evaluated based on the difference between the (ii) the longitudinal dimension and the transverse dimension (maximum-minimum value) and (iii) the standard deviation. These results are shown in Table 3. In the evaluation results of table 3, standard deviation of less than 0.010 was represented as excellent, 0.010 or more and less than 0.030 was represented as o, and 0.030 or more was represented as x. And (3) the product is a qualified product.
(identification of the printability of the logo)
The printability was evaluated by observing the appearance of the identification mark (a substantially square mark) displayed on the main body of each molded container. As a result, in the molded containers of examples 4 and 9, a slight blurring and a slight blurring were observed on the substantially square marks as identification marks according to the amount of carbon black contained in the printing ink, but the products were within the range of no influence. No abnormality was observed in the molded containers of the other examples and comparative examples.
(formability of Container)
The heights of the body parts of 10 molded containers in examples 1 to 14 and comparative examples 1 to 6 were measured, the average value of the body parts was obtained, and the container moldability was evaluated based on the average value of the body parts. These results are shown in Table 3. In the evaluation results of table 3, the average value of the body height was 30mm or more as a target value and the occurrence of no delamination at the flange was represented as ×, the average value of the body height was less than 30mm and 26mm or more as a target value and the occurrence of no delamination at the flange was represented as ×, and the average value of the body height was less than 26mm and the occurrence of delamination at the flange was represented as ×. And (3) the product is a qualified product.
The evaluation results of the identification dimensional stability of the molded containers of examples 1 to 14 and comparative examples 1 to 6 and the container moldability are shown in table 3.
TABLE 3
The molded containers of examples 1 to 14 were satisfactory in terms of dimensional stability of identification marks, and were acceptable as products. In particular, the molded containers of examples 3, 8, 9 and 11 to 14 were excellent in dimensional stability of identification marks.
In the molded containers of examples 4 and 9, a slight blurring and a slight blurring were observed on the substantially square marks as identification marks depending on the amount of carbon black contained in the printing ink, but the products were within the range of no influence. No abnormality was observed in the molded containers of the other examples and comparative examples.
The molded containers of examples 1 to 11 were each determined to have good container molding because the height of the main body was 30mm or more and the molding was possible to a degree that sufficient internal volume could be ensured. The height of the main body of the molded container of examples 12 to 14 was less than 30mm, but it was 26mm or more, and therefore it was judged that the molded container had no practical problem as a product.
From the above results, it is apparent that the molded containers of all examples satisfying the condition of 1) above all show good results that do not affect the product in terms of the dimensional stability of the identification mark, the printability of the identification mark and the moldability of the container. In the molded containers of examples 3, 8, 9 and 11 satisfying all of the conditions of 1) to 4), all of the identification mark dimensional stability, identification mark printability and container moldability showed excellent results.
In contrast, in the molded containers of comparative examples 1 to 6, which did not satisfy the condition of 1), the molded containers exhibited poor results in any one of the dimensional stability of the identification mark, the printability of the identification mark, and the moldability of the container.
Claims (8)
1. A molded container comprising a container portion formed by a main body portion and a bottom portion surrounded by a lower end portion periphery of the main body portion and having an upper opening for containing a content, wherein the molded container is formed by subjecting a laminated packaging material comprising a barrier layer formed of a metal foil, a sealing layer covering one surface of the barrier layer, and a protective layer formed of a synthetic resin film and covering the other surface of the barrier layer to press working so that the protective layer faces the outer sides of the main body portion and the bottom portion of the container portion,
Tensile strength δ1 of the synthetic resin film serving as the protective layer of the laminated packaging material in the flow direction MD MD Tensile strength δ1 in the widthwise direction TD TD Are 500MPa to 2500MPa and delta 1 MD And delta 1 TD Ratio delta 1 MD /δ1 TD On at least the surface of the synthetic resin film facing the barrier layer side, a recognition mark formed of at least any one of characters, figures, symbols, and patterns is formed by a printing ink so as to be visible from the surface of the synthetic resin film facing the other side, and the recognition mark is displayed so as to be visible from the outside on at least one of the main body portion and the bottom portion of the housing portion.
2. The molded container according to claim 1, wherein the synthetic resin film has a tensile strength at break δ2 in a flow direction MD thereof MD Tensile strength at break δ2 in the widthwise direction TD TD Are all 30MPa to 70MPa and delta 2 MD And delta 2 TD Ratio delta 2 MD /δ2 TD 0.9 to 1.1.
3. The molded container according to claim 1, wherein the synthetic resin film has an elongation at break E in a flow direction MD MD Elongation at break E in width direction TD TD 500% -900% and E MD And E is connected with TD Ratio E of MD /E TD 0.8 to 1.2.
4. The molded container according to claim 1, wherein the synthetic resin film has a heat dimensional change rate CTE in a flow direction MD MD At 90 ℃ and 30 minutes, is-2.0 to 1.5%, and has a heating dimensional change rate CTE in the width direction TD TD Under the same measurement conditions, is-1.5 to 1.5 percent and has CTE MD And CTE of TD Difference CTE of MD -CTE TD The absolute value of (2) is 1.5% or less.
5. The molded container according to claim 1, wherein identification marks are formed only on one of the two surfaces of the synthetic resin film, and the dynamic friction coefficient of the other surface on which the same identification marks are not formed is 0.1 to 0.5.
6. The molded container according to claim 1, wherein the synthetic resin film is a single-layer or multi-layer film formed of polyolefin.
7. The molded container according to claim 1, wherein an adhesive layer is interposed between the barrier layer and the protective layer.
8. A package comprising a molded container and a lid, wherein a content is contained in a container portion of the molded container, and the lid covers an opening of the container portion of the molded container and is heat-sealed to an upper end of a main body portion of the container portion, wherein the molded container is formed of the molded container according to any one of claims 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-214338 | 2021-12-28 | ||
| JP2021214338 | 2021-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219884341U true CN219884341U (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223501386.3U Active CN219884341U (en) | 2021-12-28 | 2022-12-27 | Molded container and package |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2023127621A1 (en) |
| CN (1) | CN219884341U (en) |
| TW (1) | TW202330238A (en) |
| WO (1) | WO2023127621A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112732A (en) * | 1981-12-26 | 1983-07-05 | 大日本印刷株式会社 | Laminated metallic vessel |
| JP3983131B2 (en) * | 2002-07-30 | 2007-09-26 | 東洋アルミニウム株式会社 | Package |
| JP6500699B2 (en) * | 2015-01-22 | 2019-04-17 | 王子ホールディングス株式会社 | Stretched film |
-
2022
- 2022-12-19 TW TW111148660A patent/TW202330238A/en unknown
- 2022-12-21 WO PCT/JP2022/047021 patent/WO2023127621A1/en active Application Filing
- 2022-12-21 JP JP2023570893A patent/JPWO2023127621A1/ja active Pending
- 2022-12-27 CN CN202223501386.3U patent/CN219884341U/en active Active
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| Publication number | Publication date |
|---|---|
| WO2023127621A1 (en) | 2023-07-06 |
| TW202330238A (en) | 2023-08-01 |
| JPWO2023127621A1 (en) | 2023-07-06 |
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