JPH0212825B2 - - Google Patents
Info
- Publication number
- JPH0212825B2 JPH0212825B2 JP56056171A JP5617181A JPH0212825B2 JP H0212825 B2 JPH0212825 B2 JP H0212825B2 JP 56056171 A JP56056171 A JP 56056171A JP 5617181 A JP5617181 A JP 5617181A JP H0212825 B2 JPH0212825 B2 JP H0212825B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- eva
- sealing
- ethylene
- vinyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 52
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 50
- 239000000178 monomer Substances 0.000 claims description 37
- 229920002554 vinyl polymer Polymers 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 18
- -1 vinyl compound Chemical class 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000000460 chlorine Substances 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 229920001038 ethylene copolymer Polymers 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 3
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 31
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 25
- 239000002245 particle Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 19
- 239000003505 polymerization initiator Substances 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 14
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 13
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- 239000011888 foil Substances 0.000 description 8
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 7
- 150000007524 organic acids Chemical class 0.000 description 7
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000012736 aqueous medium Substances 0.000 description 4
- 239000007900 aqueous suspension Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000012775 heat-sealing material Substances 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 235000005985 organic acids Nutrition 0.000 description 4
- 239000007870 radical polymerization initiator Substances 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Chemical class 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- CEBRPXLXYCFYGU-UHFFFAOYSA-N 3-methylbut-1-enylbenzene Chemical compound CC(C)C=CC1=CC=CC=C1 CEBRPXLXYCFYGU-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 229920001986 Vinylidene chloride-vinyl chloride copolymer Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- SQHOHKQMTHROSF-UHFFFAOYSA-N but-1-en-2-ylbenzene Chemical compound CCC(=C)C1=CC=CC=C1 SQHOHKQMTHROSF-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 229920005648 ethylene methacrylic acid copolymer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007757 hot melt coating Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010909 process residue Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000009816 wet lamination Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Description
æ¬çºæã¯ãå¡©çŽ å«æããã«ååç©éåäœãäž»æ
åãšããææïŒåç¬çµæã®å ŽåãããããŸãè€æ°
çš®é¡ã®æš¹èããã¬ã³ãããå ŽåãããïŒã®åå±€ãª
ããä»ææãšã®ç©å±€ã®å®¹åšãå¯å°ç±å°çããéã«
ãã®å°çéšã«ååšãããŠç±å°çããåŸã«éå°ãã
éã«å®¹åšåºæãç Žå£ããããšãªã容æã«å¥é¢ã§ã
ãç±å°çéšãæããæéå°æ§å®¹åšã«é¢ããã
å¡©çŽ å«æããã«ïŒå«ãããªãã³ïŒååç©éå
äœãããªã¹ãã¬ã³ãããªãšãã¬ã³ãããªãããã¬
ã³ãªã©ã®ããªãªã¬ãã€ã³çã®æš¹èã¯å€èŠ³ãæ©æ¢°ç
匷床ãæ圢æ§ãå
è£
äœçŽ æ§ãçµæžæ§çã«åªããåŸ
æ¥ããåçš®ã®å
è£
容åšã«åºãçšããããŠããã
ãããã®å®¹åšã«ã¯ãå
容ç©ãå
å¡«ãããããç±
å°çããããããã·ãŒã«ããã¯å
è£
容åšãå
è£
æ¥
çã§æ³šç®ãããŠããã
ããã¯å
è£
ã簡䟿ã§ãããæž
æœãåæ±ãã容
æãå·ååŠçãå¯èœçã®çç±ã«ãããã®ã§ãã
ããå¡©åããã«ç³»éåäœåå¿ãç±å°çããå Žåã«
ã¯ãå°çæ¡ä»¶ã«ãã€ãŠå®å
šã«äž¡çé¢ãèçããå®
å
šå°çã®ç¶æ
ïŒå¥é¢å°é£ïŒãããããã¯å°çãå
åã§ãªãå®çšæ§ããªãçšåºŠã®ããããŠåŒ±ãå¥é¢åŒ·
床ããæããªãç¶æ
ã®ã©ã¡ãããããšãããªãã
ãŸãå¡©åããã«ç³»éåäœãšããªã¹ãã¬ã³ãããã¯
å¡©åããã«ç³»éåäœãšããªãªã¬ãã€ã³ã®åŠãç°çš®
æ質ã®çµåãã«ããå°çã®å Žåããäºãã®çžæº¶æ§
ãæªãããšãã容åšãšããŠå¿
èŠãªå°ç匷床ãåŸã
ããå®çšçã«ã¯äžæºè¶³ã§ããã
ãŸããã¢ã«ãããŠã ç®ã«ãããã¡ã«ãæ¥çå€ã
溶液åæ¥çå€ãã³ãŒãã€ã³ã°ãããã®ããããã
ããã¯é£åè¡çäžã®åé¡ããã€ãã
æ¬çºæã¯äžèšã®æ¬ ç¹ãæ¹è¯ãã補åã®è£œé ãã
ã³æµéã®éçšã§å
容ç©ãå®å
šã«ä¿è·ããã«ååãª
å°ç匷床ãæãããã€å
容ç©ã®åãåºãã«ããã€
ãŠã¯å®¹åšåºæãç Žå£ããããšãªããã®å°çéšã容
æã«å¥é¢ãããå¯å°å®¹åšãæäŸããããšãç®çãš
ãããã®ã§ãã€ãŠãå³ã¡ã(1)ãšãã¬ã³âé
¢é
žãã
ã«å
±éåäœ40ã95ééïŒ
ãšè³éŠæããã«åéäœ60
ãïŒééïŒ
ãšãã°ã©ããæ¡ä»¶ã«ä»ããŠåŸãããæ¹
質暹è10ã100éééšãããã³(2)äžé£œåã«ã«ãã³
é
žåã¯ãã®èªå°äœãå«æãããšãã¬ã³å
±éåäœ90
ãïŒéééšãäž»æåãšããŠãªãå¥é¢å¯èœãªå¯å°ç±
å°çéšãæããããšãç¹åŸŽãšãããå¡©çŽ å«æãã
ã«ååç©éåäœãäž»æåãšããææãå°ãªããšã
ïŒã€ã®å®¹åšæ§æææãšããæéå°æ§å®¹åšã§ããã
æ¬çºæã«é©çšããã容åšã®äŸãšããŠã¯ãå°åºæ
圢æ³ãäžç©ºæ圢æ³ãç空ãå§ç©ºæ圢æ³ãªã©ã§åŸã
ããæ圢容åšã§ãã€ãŠãå
容ç©ã®å
å¡«å£ãã¢ã«ã
ããŠã ç®ãããªãšãã¬ã³ãã¬ãã¿ã¬ãŒãã®åŠãã
ã€ã«ã ã§èŠã€ãŠå°çãããã®ãæããããšãã§ã
ãïŒç¬¬ïŒå³ïŒã
ãã®ãããªå®¹åšã®å°çéšã«æ¬çºæã®ç±å°çææ
ãçšããããšã«ãããå
容ç©å
å¡«ä¿æäžã¯ååãª
å°ç匷床ãæãããã€å
容ç©ã®åãåºãæã«ã¯å®¹
æãªå¥é¢æ§ãæããå¯å°å®¹åšãæäŸããããšãã§
ããã
æ¬çºæã§äºãç±å°çéšãæããå¯å°å
è£
容åšã®
å°ãªããšãäžã€ã®æ§æææã§ããå¡©çŽ å«æããã«
ååç©éåäœãšã¯ãäŸãã°å¡©åããã«æš¹èãå¡©å
ãããªãã³æš¹èãå¡©åãããªãã³âå¡©åããã«å
±
éåäœãå¡©åãããªãã³âé
¢é
žããã«å
±éåäœã
å¡©åããã«âé
¢é
žããã«å
±éåäœãå¡©åããã«ã
ãšãã¬ã³âé
¢é
žããã«å
±éåäœã«ã°ã©ããããã°
ã©ããå
±éåäœçãããã
ãªãããããã®éåäœã«ã¯å¯å¡å€ãå®å®å€çã®
åçš®å©å€ãå ããŠçšããããšãã§ããããŸããã
ããã®éåäœã«ã¯50ééïŒ
æªæºã®ç¯å²ã§ä»ã®æ··å
å¯èœãªæš¹èããŽã ãé
åããŠçšãããšå¹
åºãå質
ãä»äžããããšãã§ããã
次ã«ãæ¬çºæã®ç±å°çææãæ§æããã(1)æå
ã§ããè³éŠæããã«åéäœæ¹è³ªEVAã補é ãã
éã«äœ¿çšããããè³éŠæããã«åéäœãšããŠã¯ã
äžè¬åŒïŒåŒäžR1ã¯æ°ŽçŽ ååãŸãã¯ççŽ æ°ïŒã
ïŒã®ã¢ã«ãã«åºãR2ãR6ã¯ããããæ°ŽçŽ ååã
ããã²ã³ååãŸãã¯ççŽ æ°ïŒãïŒã®ã¢ã«ãã«åºã
瀺ãïŒã§è¡šããããã¹ãã¬ã³ç³»ã¢ãããŒãããšã
ã°ã¹ãã¬ã³ãæ žçœ®æã¹ãã¬ã³ããšãã°ã¡ãã«ã¹ã
ã¬ã³ãã€ãœãããã«ã¹ãã¬ã³ãã¯ãã«ã¹ãã¬ã³ã
α眮æã¹ãã¬ã³ããšãã°Î±ã¡ãã«ã¹ãã¬ã³ãαãš
ãã«ã¹ãã¬ã³ãªã©ãæããããããŸãã¹ãã¬ã³ã®
ä»ã«ã¢ã¯ãªã«é
žãšã¹ãã«ãªã©ã¹ãã¬ã³ä»¥å€ã®ãã
ã«åéäœãšã®æ··åç³»ãé©çšãããã
ãŸããæ¹è³ªãããã¹ãEVAã¯ãç¹ã«éå®ãã
ããã®ã§ã¯ãªãã1000ã3000æ°å§äžã®é«å§éåæ³
ãããã¯1000ã400æ°å§äžã§ã®æº¶æ¶²ãŸãã¯ä¹³åé
åæ³ãªã©åŸæ¥è£œé ãããŠãããããã®æ¹æ³ã«ãã
ãã®ã§ãããããã®EVAã®é
¢é
žããã«å«éã¯ïŒ
ã50ééïŒ
ãªãã°æ¬çºæã®ç®çãéæããæ¹è³ªæš¹
èãè¯å¥œã«åŸãããšãã§ããããïŒã35ééïŒ
ã®
ç¯å²ã®ãã®ãç¹ã«å¥œãŸããã
ã¡ã«ãã€ã³ããã¯ã¹ïŒMIïŒã§è¡šããš0.5ã150
ïœïŒ10åã®ãã®ãæãŸããã
è³éŠæããã«åéäœã®æ¹è³ªéã«ã€ããŠã¯ããã
ãšEVAãšã®åèšééãåºæºãšããŠEVA40ã95é
éïŒ
ãè³éŠæããã«åéäœåäœ60ãïŒééïŒ
ã§ã
ãã
è³éŠæããã«åéäœã®éãïŒééïŒ
æªæºã§ã¯æ¬
çºæã®å¹æãåºããäžæ¹60ééïŒ
è¶
éã§ã¯æ¹è³ªæš¹
èã®ææ匷床ïŒå¯ææ§ïŒããã€ã«ã æ圢å å·¥æ§ã
æªåããŠå¥œãŸãããªãã
æ¬çºæã«ãããè³éŠæããã«åéäœã§ã®EVA
ã®æ¹è³ªã«ã¯ãæŒåºæ©çã§ã®æº¶èã°ã©ããããæŸå°
ç·ç
§å°ã«ããã°ã©ããã溶液äžã§ã®ã°ã©ããçäž
è¬çãªæ¹è³ªææ³ãçšããããããäŸãã°ä»¥äžã®æ
æ³ãæããããšãã§ããã
å³ã¡ãEVAç²åïŒäžè¬ã«ã¯ïŒãïŒmmã奜ãŸã
ãã¯ïŒãïŒmmåŸã®ãã®ïŒ40ã95ééïŒ
ãšè³éŠæã
ãã«åéäœïŒã60ééïŒ
ããã³éåéå§å€ãšãå«
ãæ°Žæ§æžæ¿æ¶²äžã§ããã®ããã«åéäœã®å°ãªããš
ã80ééïŒ
ããã®ããªããŒç²åäžã«å«æµžãããã€
ãã§ãã®åéäœãéåãããããšã«ãã€ãŠæ¹è³ª
EVAãåŸãããã
ããã§çšããéåéå§å€ãåéäœã®å«æµžæ¹æ³ã
éåæ¹æ³ã®è©³çŽ°ã¯ä»¥äžã®éãã§ããã
ã©ãžã«ã«éåéå§å€
è³éŠæããã«åéäœãå®è³ªçã«ãã®éåã䌎ãª
ããã«æ°Žæ§åªäœäžã§EVAç²åã«å«æµžããããã®
åŸãã®æ°Žæ§åæ£æ¶²ãææž©ããŠåéäœãéåããã
ã®ã§ããããéåã¯ã©ãžã«ã«éåéå§å€ã«ãã€ãŠ
ä¿é²ããã®ããµã€ãã§ããã
ãã®éåéå§å€ã¯åéäœãšå
±ã«EVAç²åã«å«
浞å¯èœã§ãªããã°ãªããªãã
åŸã€ãŠã䜿çšãããã©ãžã«ã«éåéå§å€ã¯æ²¹æº¶
æ§ã®ãã®ã§ããããããŠã10æéã®åæžæãåŸã
ããã®åé¢æž©åºŠã50ã150âã§ãããã®ã奜ãŸã
ããããã§ãã10æéã®åæžæãåŸãããã®å解
枩床ããšã¯ããã³ãŒã³ïŒãªããã«äžã«éåéå§å€
ã0.1ã¢ã«æ·»å ããŠãã枩床ã«10æéæŸçœ®ãããš
ãã«ãéåéå§å€ã®å解çã50ïŒ
ãšãªããã®æž©åºŠ
ãæå³ããããªããå«æµžå·¥çšãå
åäœæž©ã§å®æœã
ãã°ãããããäœæž©å解æ§ã®éåéå§å€ãçšãã
ããšãã§ããããšã¯ãããŸã§ããªãã
䜿çšããããã©ãžã«ã«éåéå§å€ã®å
·äœäŸãæ
ããã°ãã©ãŠãã€ã«ããŒãªãã·ãïŒ62âïŒããã³
ãŸã€ã«ããŒãªãã·ãïŒ74âïŒãïœâããã«ããŒãª
ãã·ãã³ãŸãšãŒãïŒ104âïŒããžã¯ãã«ããŒãªãã·
ãïŒ117âïŒçã®ãããªææ©éé
žåç©ãã¢ãŸãã¹
ã€ãœããããããªã«ïŒ65âïŒçã®ãããªã¢ãŸåå
ç©ããã®ä»ãããïŒäžèšã«ãã³äžã®æž©åºŠã¯äžèšã®
åæžæ枩床ïŒã
éåéå§å€ã®éã«ã¯å¶éã¯ãªãããäžè¬ã«äœ¿çš
åéäœééã®0.01ã10ééïŒ
çšåºŠãéåžžã¯0.1ã
2.0ééïŒ
çšåºŠã§ããã
éåéå§å€ã¯ãããã«åéäœã«æº¶åãããŠäœ¿çš
ããã®ããµã€ãã§ããã
æ°Žæ§åªäœäžã§ã®EVAç²åã«å¯Ÿããè³éŠæããã«
åéäœã®å«æµž
æ°Žæ§åªäœäžã§EVAç²åã«ããã«åéäœãå«æµž
ããã代衚çãªæ¹æ³ã¯ãEVAç²åã®æ°Žæ§åæ£æ¶²
ã«å¥œãŸããã¯éåéå§å€ïŒããã³å¿
èŠã«å¿ããŠã
ã®ä»ã®æ·»å å€ïŒã溶åããŠããåéäœãå ããŠæ¹
æããããšãããªãããã®ä»ã®æ¹æ³ãšããŠã¯ãé
åéå§å€æº¶ååéäœã®æ°Žæ§åæ£æ¶²ã«EVAç²åã
å ããŠæ¹æããæ¹æ³ãããã
å«æµžå·¥çšã§ã¯å®è³ªçã«éåãèµ·ããªãããã«ã
䜿çšéåéå§å€ã®å解枩床ãšã®çžé¢ã§å
åäœãæž©
床ã§ãäžè¬ã«ã¯å®€æž©ã100âã§æäœãã¹ãã§ããã
ãã®å·¥çšã§ãéé¢åéäœã®éãåéäœäœ¿çšéã®
20ééïŒ
æªæºãšãªãããã«åéäœãå«æµžãããã
EVAã¯ããã«åéäœãšæ¯èŒççžæº¶æ§ãããã®ã§ã
éåéå§åã«20ééïŒ
æªæºã®åéäœãéé¢ããŠã
ãŠãéåäžã«ãããåéäœã¯EVAç²åã«å«æµžã
ãã®ã§ããããåéäœãéåããŠåŸãããéåäœ
ç²åãæ¹è³ªãããEVAç²åãšç¬ç«ããŠæåºãã
ããšã¯ãªãã
å«æµžæéã¯ïŒãïŒæéçšåºŠãæ®éã§ããã
æ°Žæ§åæ£æ¶²äžã®EVAç²åãšããã«åéäœãšã®
å«éã¯ãæ°Ž100éééšã«å¯ŸããŠïŒã100éééšçšåºŠ
ã§ããã®ããµã€ãã§ããã
ãã®ãããªæ°Žæ§åæ£æ¶²ã¯åã«æ¹æãå
åã«è¡ãª
ãã ãã§ãå®å®ã«åæ£ç¶æ
ã«ç¶æããããšãã§ã
ãããé©åœãªæžæ¿å®å®å€ã䜿çšããã°ãã容æã
ã€ããå®å®ã«åæ£æ¶²ã調補ããããšãã§ãããã
ã®å Žåã®æžæ¿å®å®å€ãšããŠã¯ãããã«åéäœã®æ°Ž
æ§æžæ¿éåã®éã«æžæ¿å®å®å€ãšããŠäœ¿çšãããã
ã®ãäžè¬ã«äœ¿çšå¯èœã§ãã€ãŠãå
·äœçã«ã¯ãããš
ãã°ããªããã«ã¢ã«ã³ãŒã«ãã¡ãã«ã»ã«ããŒã¹ã
ããããã·ã»ã«ããŒã¹çã®æ°Žæº¶æ§é«ååç©è³ªãã¢
ã«ãã«ãã³ãŒã³ã¹ã«ãããŒãçã®ãããªé°ã€ãªã³
æ§çé¢æŽ»æ§å€ãããªãªãã·ãšãã¬ã³ã¢ã«ãã«ãšãŒ
ãã«çã®éã€ãªã³æ§çé¢æŽ»æ§å€ããããã¯é
žåã
ã°ãã·ãŠã ããªã³é
žã«ã«ã·ãŠã çã®æ°Žäžæº¶æ§ã®ç¡
æ©å¡©çãåç¬ã§ãããã¯æ··åããŠæ°Žã«å¯ŸããŠ0.01
ã10ééïŒ
çšåºŠã®éã§äœ¿çšãããã
EVAç²åã«ããã«åéäœïŒããã³éåéå§å€ïŒ
ãå«æµžãããéã«ãå¯å¡æ§ãæ»å€ãé
žåé²æ¢å€ã
çã®è£å©è³æãåæã«å«æµžãããããšãã§ãã
ïŒãããã®è£å©è³æã¯EVAã«æ¢ã«æ·»å ãããŠãã
å ŽåãããããŸãéååŸã«é
åããããšãã§ã
ãïŒã
é å
ãã®ããã«ããŠèª¿è£œããæ°Žæ§åæ£æ¶²ãææž©ã
ãŠã䜿çšããéåéå§å€ãé©åœãªé床ã§å解ãã
枩床以äžã«å°ãããã°ãå«æµžãããããã«åéäœ
ã¯éåããŠæ¹è³ªEVAç²åãçæãããã©ãžã«ã«
éåãè¡ãªãããã®ã§ãããããå®è³ªçã«é
žçŽ ã
å«æããªãé°å²æ°ã§å ç±ãè¡ãªãã¹ãã§ããããŸ
ãéåé²è¡äžã®æ°Žæ§åæ£æ¶²ãé©åœã«æ¹æããããš
ã奜ãŸããã
éå枩床ã¯äœ¿çšéåéå§å€ã®å解枩床ãšã®çžé¢
ã«ãããŠå®ãŸãããäžè¬ã«50ã150âçšåºŠã§ããã
éå枩床ã¯éåæéãéããŠäžå®ã§ããå¿
èŠã¯ãª
ããéåæéã¯ïŒã10æéçšåºŠã§ããã®ããµã€ã
ã§ãããéåå§åã¯åžžå§ã10KgïŒcm2çšåºŠããµã€ã
ã§ããã
ãŸããããã«åéäœã®éåã®çµæçããéåäœ
ã®ååé調ç¯ã®ãããïœâããã«ã¡ã«ã«ãã¿ã³ã
ïœâããã·ã«ã¡ã«ã«ãã¿ã³ãïœâããã·ã«ã¡ã«ã«
ãã¿ã³çã®é£é移åå€ãæ·»å ãããšè¯ãã
éååŸãéåžžã®ããã«åéäœïŒããšãã°ã¹ãã¬
ã³ïŒã®æ°Žæ§æžæ¿éåã®åŸåŠçãšåæ§ã®åŠçãè¡ãª
ãã°ã䜿çšããEVAç²åã®åœ¢ç¶ãã»ãŒãã®ãŸãŸ
ä¿æãããŠããŠçŽã¡ã«æ圢çšææãšããŠäœ¿çšãã
ããšãã§ããæ¹è³ªEVAç²åãåŸãããã
æ¬çºæã§ã®æ¹è³ªEVAïŒããªãã¡(1)æåïŒã¯åäž
ã«åæ£ãããããã«åéäœããã®éåäœãå
èµã
ãEVAãããã¯ããã«åéäœãEVAã®éåäœå¹¹
ã«ã°ã©ãããããã®ããããã¯ãããã®æ··åçµæ
ç©ãšæšå®ãããããã«åéäœç¬èªã®éåäœç²åã
EVAç²åãšå¥åã«ååšãããã®ã§ã¯ãªãã
è³éŠæããã«åéäœæ¹è³ªEVAã®äœ¿çšã«ããã€
ãŠã¯ãåéäœåäœãïŒã60ééïŒ
ã®ç¯å²ãå®ãã
ããããã該æ¹è³ªEVAã«æªæ¹è³ªEVAãæ··åããŠ
çšããŠãæ¬çºæã®å¹æãå¥ããããšãã§ãããåŸ
ã€ãŠãæ¬çºæã®(1)æåã¯ãçŽæ¥çã«æ¹è³ªããã
EVAã®ä»ã«ããããæªæ¹è³ªã®EVAã§åžéããè³
éŠæããã«åéäœå«éãïŒã60ééïŒ
ã®ç¯å²ã«ã
ããã®ãå
å«ããã
ãŸããæ¬çºæã§çšããããç±å°çææãæ§æã
ãããäžã€ã®(2)æåã§ããäžé£œåã«ã«ãã³é
žåã¯
ãã®èªå°äœãå«æãããšãã¬ã³å
±éåäœãšã¯ããš
ãã¬ã³ïŒå Žåã«ãã€ãŠã¯ãšãã¬ã³ãšä»ã®Î±ãªã¬ã
ã€ã³ïŒãšå
±éåæ§ã®äžé£œåã«ã«ãã³é
žåã¯ãã®èª
å°äœïŒä»¥äžãäžé£œåææ©é
žé¡ãšç§°ãïŒãšããæã
å
±éåäœã§ããããã®å Žåããšãã¬ã³ã®å«éã¯50
ééïŒ
以äžã§ããã
ããã§äºãå
±éåäœãšã¯ã©ã³ãã ããããã¯ã
ãã³ã°ã©ããå
±éåäœãããããããã¯åç¬ã§ã
ãŸãã¯ïŒçš®ä»¥äžãæ··åããŠçšããããšãã§ããã
äžé£œåææ©é
žé¡ãšã¯ãã¢ã¯ãªã«é
žãã¡ã¿ã¯ãªã«
é
žããããŒã«é
žããã¬ã€ã³é
žãã€ã¿ã³ã³é
žçã®äž
飜åææ©å¡©ãŸãã¯ãã®ãšã¹ãã«ãéå±å¡©ãã¢ã
ããã€ãããç¡æ°Žç©çã®èªå°äœãæå³ããã
äžé£œåææ©é
žé¡å«æãšãã¬ã³å
±éåäœã®å
·äœäŸ
ãšããŠã¯ãäŸãã°ãšãã¬ã³âã¢ã¯ãªã«é
žå
±éå
äœããšãã¬ã³âã¡ã¿ã¯ãªã«é
žå
±éåäœåã³ããã
ã®éå±ã€ãªã³æ¶æ©æš¹èããšãã¬ã³âã¢ã¯ãªã«é
žãš
ãã«å
±éåäœãç¡æ°Žãã¬ã€ã³é
žã°ã©ããããªãšã
ã¬ã³ãç¡æ°Žãã¬ã€ã³é
žã°ã©ãããšãã¬ã³âé
¢é
žã
ãã«å
±éåäœçãæããããšãã§ããã
æ¬çºæã§çšããããç±å°çææã®äœ¿çšã«ããã€
ãŠã¯ãæ¬çºæã®ç®çã§ããæå¥é¢æ§ãæããªãç¯
å²ã«ãããŠãä»ã®éåäœäŸãã°æŒåºå å·¥æ§åã³å»¶
å±æ§ãæ¹è¯ããç®çã§MI0.5ã100ïœïŒ10åã®äœ
å¯åºŠããªãšãã¬ã³ãæ·»å ããããšãã§ããããŸã
èè¡ææ§ä»äžã®ç®çã§ãšãã¬ã³âãããã¬ã³å
±é
åãŽã ãã¹ãã¬ã³âãã¿ãžãšã³å
±éåãŽã ããã³
ã¹ãã¬ã³âå
±åœ¹ãžãªã¬ãã€ã³ãããã¯å
±éåãŽã
çã®ç±å¯å¡æ§ãšã©ã¹ãããŒãæ·»å ããããšãã§ã
ãã
äžèšã®(1)æåã§ããæ¹è³ªEVAãš(2)æåã§ãã
äžé£œåææ©é
žé¡å«æãšãã¬ã³å
±éåäœãšã®é
åå²
åã¯ã(1)æå10ã100éééšã«å¯Ÿãã(2)æå90ã
ïŒéééšã奜ãŸããã¯(1)æå50ã100éééšã«å¯Ÿ
ãã(2)æå50ãïŒéééšã§ããã
(1)æåã10éééšæªæºã§ã¯ãå¥é¢åŒ·åºŠã®å°çæž©
床äŸåæ§ã倧ããçç±ã§å¥œãŸãããªãã
次ã«ããããåæåã®æ··åçµæç©ã¯ãã³ããªãŒ
ãããµãŒãããŒã«ãªã©ã®ãããåŒæ··ç·Žæ©ã®ä»ã«ã
äžè»žæŒåºæ©ãäºè»žæŒåºæ©ãªã©ã®é£ç¶åŒã®æŒåºæ©ã§
容æã«åŸãããšãã§ããã
é
åé åºã«ã€ããŠãç¹ã«éå®ãããããšã¯ãª
ããäŸãã°ãæ¹è³ªEVAãšæªæ¹è³ªEVAããã³äžé£œ
åææ©é
žé¡å«æãšãã¬ã³å
±éåäœããæãçµæç©
ã¯ããããïŒæåãæ··ç·Žæ©ã«åæã«é
åããŠãã
ãããæ¹è³ªEVAãšæªæ¹è³ªEVAãšã®æ··ç·Žç©ïŒ(1)æ
åã«çžåœïŒãäœã€ãŠãããããã«äžé£œåææ©é
žé¡
å«æãšãã¬ã³å
±éåäœãæ··åããŠãããããŸã
ã¯ãäžé£œåææ©é
žé¡å«æãšãã¬ã³å
±éåäœãšæªæ¹
質EVAãšã®æ··ç·Žæ©ã«æ¹è³ªEVAãæ··åããŠãã
ãã
次ã«åèšã®å¡©çŽ å«æããã«ååç©éåäœãäž»æ
åãšããææãå°ãªããšãäžã€ã®æ§æææãšãã
å¯å°ç±å°çéšãæãã容åšãšã¯ãåã«ç¬¬ïŒå³ãã
ã€ãŠç°¡åã«èª¬æããããç±å°çéšã«ãããã®ææ
ãçšããããŠããã°ãããä»ã®éšåã¯çŽãéå±ç®
ãä»ã®æš¹èïŒããªã¢ãããã»ããã¢ã³ãããªãšã
ã¬ã³ãã¬ãã¿ã¬ãŒããããªã«ãŒãããŒãçïŒçã§
æ§æããããã®ã§ãã€ãŠå·®ãæ¯ããªããã®ã§ãã
ããäžè¬ã«ã¯è£œé å·¥çšã®ç
©æ®ãçã®çç±ãããçŽ
ãéå±ç®ãä»ã®æš¹èçãšå¡©çŽ å«æããã«ååç©é
åäœãšãç©å±€ãããç©å±€æãçšãããããã®å¡©çŽ
å«æããã«ååç©éåäœå±€ã容åšã®å
åŽã«ããã
ãã«åœ¢æããããã®ã§ããããã¡ãããå¡©çŽ å«æ
ããã«ååç©éåäœã®ã¿ãããªã容åšã§ãäžåã«
å·®ãæ¯ããªãã
ãŸããæ¬çºæã®å°çææã®äœ¿çšæ¹æ³ã¯ã容åšã®
å°çéšãŸãã¯èäœã®å°çéšã®å°ãªããšãäžæ¹ã«çš
ããããã°ç®çãéæããããããããå°çéšã®
ã¿ã«çšããã°ããã®ã§ããããäžè¬ã«ã¯ä»ææãš
ã®ç©å±€ã®åœ¢ã§çšããããã
æ¬çºæã®å°çææã容åšãããã¯èäœã®å°çéš
ã®ã©ã¡ããäžæ¹ã«åœ¢æãããæ¹æ³ãšããŠã¯ãã€ã³
ãã¬ãŒã·ãšã³æ³ãããã¯ïŒŽãã€æ³çå
¬ç¥ã®ãã€ã«
ã æ圢æ³ã«ãããã€ã«ã ãæ圢ãããã®ãã€ã«ã
ã容åšã®å°çé¢ã«ä»åšãããŠå°çããæ¹æ³ããã
ãã¯å
容ç©å容éšãŸãã¯èäœãæ§æããåºæã®è¡š
é¢ã«å
¬ç¥ã®æ¹æ³ã§æŒåºã³ãŒãã€ã³ã°ããã©ã€ã©ã
ããŒãããŠãšããã©ãããŒãããããã¡ã«ãã³ãŒ
ãã€ã³ã°ããããäž¡è
ãå
±æŒåºã©ãããŒãããã
ã¯å
±æŒåºã³ãŒãã€ã³ã°ããçã®æ¹æ³ãæããã
ãã
容åšã®å°çéšãå°çãããæ¹æ³ãšããŠã¯ãããŒ
ãã·ãŒã©ãŒã«ããå å§ç±å°çæ³ãã¯ãããšããè¡
æç±å°çæ³ãèªé»å°çæ³ãè¶
é³æ³¢å°çæ³çå
¬ç¥ã®
æè¡ãçšããŠè¡ãªãããã
以äžãæ¬çºæã®å¹æã«ã€ããŠå®æœäŸã«ãŠèª¬æã
ãããæå¥é¢æ§ã®è©äŸ¡ã¯ã·ãŒãåã¯ãã€ã«ã ã§è¡
ãªã€ãã®ã§ããã®äŸã瀺ãã
å®æœäŸ ïŒ
å
容é50ã®ãªãŒãã¯ã¬ãŒãå
ã«çŽæ°Ž20Kgåã³
æžæ¿å€ãšããŠç¬¬äžãªã³é
žã«ã«ã·ãŠã 600ïœãšãã
ã·ã«ãã³ãŒã³ã¹ã«ãã³é
žãããªãŠã 0.6ïœãšãå
ããŠæ°Žæ§åªè³ªãšãªããããã«ãšãã¬ã³âé
¢é
žãã
ã«å
±éåäœïŒMI15ïœïŒ10åãæ¯é0.950ãé
¢é
žã
ãã«å«é28ééïŒ
ïŒç²åïŒKgãæ¹æã«ããæžæ¿ã
ãããå¥ã«éåéå§å€ãšããŠãéé
žåãã³ãŸã€ã«
ïŒïœåã³ïœâããã«ããŒãªãã·ããã¬ãŒãïŒïœã
ã¹ãã¬ã³ïŒKgã«æº¶è§£ããããããå
ã®æžæ¿ç³»ã«æ
å
¥ãããªãŒãã¯ã¬ãŒãå
枩床ã50âã«ææž©ãã該
枩床ã§ïŒæéä¿æããŠéåéå§å€ãå«ãã¹ãã¬ã³
ããšãã¬ã³âé
¢é
žããã«å
±éåäœç²åäžã«å«æµžã
ããã
ãã®æ°Žæ§æžæ¿æ¶²ã60âã«ææž©ãã該枩床ã§ïŒæ
éãæŽã«90âã§ïŒæéç¶æããŠéåãå®çµãã
ããåŸãããæ¹è³ªç²åäžã®ã¹ãã¬ã³å«éã¯ãã»ãŒ
30ééïŒ
ååšããããšã確èªãããïŒåå¿çç¥
100ïŒ
ïŒã
該æ¹è³ªæš¹èåç¬åã³è©²æ¹è³ªæš¹èãšãšãã¬ã³âãš
ãã«ã¢ã¯ãªã¬ãŒãå
±éåäœïŒæ¥æ¬ãŠãã«ãŒç€Ÿè£œ
DPDJ8026ïŒä»¥äžEEAãšèšãïŒãæå®éãã¬ã³ã
ãããã®ã30mmåŸïŒŽãã€ãã€ã«ã æ圢æ©ãçšããŠ
160ã180âã®æ圢枩床ã§å€«ã
çŽ50ÎŒã®ãã€ã«ã ãš
ããããããã®ãã€ã«ã ãš7ÎŒåã®ã¢ã«ãããŠã
ç®ãšãæ¥çå€ã§è²ŒåãããŠç©å±€ãã€ã«ã ãšããã
ãã®ç©å±€ãã€ã«ã ã®æ¹è³ªæš¹èå±€ãå°çé¢ãšãã
0.2mmåã®ããªå¡©åããã«ã·ãŒããå ç±å°çããã
å°çæ¡ä»¶ã¯ãç±æ¿åŒããŒãã·ãŒã©ãŒãçšããå°
çå¹
ïŒmmãå°çå§åïŒKgïŒcm2ãå°çæéïŒç§ãå°
ç枩床130ã190âã§ãããå¥é¢åŒ·åºŠã¯ãã·ãšãã
ãŒååŒåŒµè©Šéšæ©ãçšãããµã³ãã«å·Ÿ15mmåŒåŒµé床
300mmïŒåã§180床å¥é¢åŒ·åºŠã23âã§æž¬å®ããã
çµæã第ïŒè¡šã«ç€ºãã
The present invention is a method of sealing and heat-sealing a container made of a single layer or laminated with other materials of a material whose main component is a chlorine-containing vinyl compound polymer (it may be a single composition or may be a blend of multiple types of resins). The present invention relates to an easy-to-open container having a heat-sealed part that is present in the sealed part during sealing and can be easily peeled off without destroying the container base material when the container is later opened. Resins such as chlorine-containing vinyl (vinylidene-containing) compound polymers, polyolefins such as polystyrene, polyethylene, and polypropylene have excellent appearance, mechanical strength, moldability, ease of packaging design, and economic efficiency, and have been widely used in various packaging containers. It is used. Among these containers, so-called seal pack packaging containers, which are filled with contents and heat-sealed, are attracting attention in the packaging industry. This is because packaging is simple, clean, easy to handle, and can be frozen. However, when vinyl chloride polymers are heat sealed together, depending on the sealing conditions, Either a completely sealed state in which both interfaces are fused (difficult to peel), or a state in which the sealing is insufficient and has only extremely weak peel strength to the extent of no practical use can be achieved.
Furthermore, when sealing a combination of different materials such as vinyl chloride polymer and polystyrene or vinyl chloride polymer and polyolefin, the sealing strength necessary for a container cannot be obtained due to their poor compatibility with each other, making it impractical. I am not satisfied with this. There are also aluminum foils coated with hot-melt adhesives or solution-based adhesives.
This was a food hygiene issue. The present invention improves the above-mentioned drawbacks, has sufficient sealing strength to completely protect the contents during product manufacturing and distribution, and destroys the container base material when removing the contents. The purpose of the present invention is to provide a sealed container whose sealed portion can be easily peeled off without causing any damage. mass 60
10 to 100 parts by weight of a modified resin obtained by subjecting ~5% by weight to grafting conditions, and (2) an ethylene copolymer containing an unsaturated carboxylic acid or its derivative 90
An easily openable container having at least one container constituent material made of a material containing a chlorine-containing vinyl compound polymer as a main component, characterized by having a removable sealed heat-sealed part containing 0 parts by weight as a main component. It is. Examples of containers to which the present invention can be applied include molded containers obtained by injection molding, blow molding, vacuum or pressure molding, etc., with the filling opening made of a film such as aluminum foil or polyethylene terephthalate. One example is one that is covered and sealed (Fig. 1). By using the heat sealing material of the present invention in the sealing part of such a container, a sealed container that has sufficient sealing strength while being filled with contents and has easy peelability when taking out the contents is obtained. can be provided. The chlorine-containing vinyl compound polymer that is at least one constituent material of the sealed packaging container having a heat-sealed portion in the present invention includes, for example, vinyl chloride resin, vinylidene chloride resin, vinylidene chloride-vinyl chloride copolymer, and vinylidene chloride. -vinyl acetate copolymer,
There are vinyl chloride-vinyl acetate copolymers, graft copolymers in which vinyl chloride is grafted onto ethylene-vinyl acetate copolymers, and the like. In addition, various auxiliary agents such as plasticizers and stabilizers may be added to these polymers. Furthermore, by blending these polymers with other miscible resins or rubbers in an amount of less than 50% by weight, a wide range of qualities can be imparted. Next, the aromatic vinyl monomers that can be used in producing the aromatic vinyl monomer-modified EVA, which is the component (1), which constitutes the heat sealing material of the present invention are as follows: General formula (in the formula, R 1 is a hydrogen atom or has 1 to 1 carbon atoms)
4 alkyl group, R 2 to R 6 are each a hydrogen atom,
(representing a halogen atom or an alkyl group having 1 to 4 carbon atoms) such as styrene, nuclear-substituted styrene such as methylstyrene, isopropylstyrene, chlorostyrene,
Examples of α-substituted styrene include α-methylstyrene and α-ethylstyrene. In addition to styrene, a mixture system with a vinyl monomer other than styrene such as acrylic ester is also applicable. In addition, the EVA to be modified is not particularly limited, and can be produced by any conventional method such as high-pressure polymerization under 1000 to 3000 atmospheres or solution or emulsion polymerization under 1000 to 400 atmospheres. It can be anything. The vinyl acetate content of this EVA is 2
If the content is 50% by weight, a modified resin that achieves the object of the present invention can be obtained satisfactorily, but a content in the range of 5 to 35% by weight is particularly preferred. 0.5 to 150 expressed in melt index (MI)
g/10 minutes is preferable. The amount of modified aromatic vinyl monomer is 40 to 95% by weight of EVA and 60 to 5% by weight of aromatic vinyl monomer unit, based on the total weight of this and EVA. If the amount of the aromatic vinyl monomer is less than 5% by weight, the effect of the present invention will not be achieved, while if it exceeds 60% by weight, the material strength (flexibility) and film molding processability of the modified resin will deteriorate, which is undesirable. . EVA with aromatic vinyl monomer in the present invention
General modification techniques such as melt grafting using an extruder, grafting by radiation irradiation, and grafting in a solution are used for the modification, and examples thereof include the following techniques. That is, in an aqueous suspension containing 40-95% by weight of EVA particles (generally 1-7 mm, preferably 2-5 mm in diameter), 5-60% by weight of aromatic vinyl monomer and a polymerization initiator. , by impregnating at least 80% by weight of the vinyl monomer into the polymer particles and then polymerizing the monomer.
EVA is obtained. The method of impregnating the polymerization initiator and monomer used here,
Details of the polymerization method are as follows. Radical polymerization initiator EVA particles are impregnated with an aromatic vinyl monomer in an aqueous medium without substantially polymerizing the monomer, and then this aqueous dispersion is heated to polymerize the monomer. , polymerization is usually promoted by a radical polymerization initiator. This polymerization initiator must be able to be impregnated into the EVA particles together with the monomer. Therefore, the radical polymerization initiator used is oil-soluble. Preferably, the separation temperature is 50 to 150°C to obtain a half-life of 10 hours. Here, "decomposition temperature to obtain a half-life of 10 hours" means that when 0.1 mole of a polymerization initiator is added to 1 liter of benzene and left at a certain temperature for 10 hours, the decomposition rate of the polymerization initiator is It means that temperature which is 50%. It goes without saying that if the impregnation step is carried out at a sufficiently low temperature, a polymerization initiator that is more decomposable at lower temperatures can be used. Specific examples of radical polymerization initiators that can be used include lauroyl peroxide (62°C), benzoyl peroxide (74°C), t-butyl peroxybenzoate (104°C), dicumyl peroxide (117°C), etc. There are organic peroxides such as, azo compounds such as azobisisobutyronitrile (65°C), and others (the temperature in the above-mentioned cup is the above-mentioned half-life temperature). There is no limit to the amount of polymerization initiator, but it is generally about 0.01 to 10% by weight of the monomer weight used, usually 0.1 to 10% by weight.
It is about 2.0% by weight. The polymerization initiator is usually used dissolved in the vinyl monomer. Impregnation of EVA particles with aromatic vinyl monomers in an aqueous medium A typical method for impregnating EVA particles with vinyl monomers in an aqueous medium involves adding an aqueous dispersion of EVA particles, preferably a polymerization initiator (and The process consists of adding the monomer in which other additives (if necessary) are dissolved and stirring. Another method is to add EVA particles to an aqueous dispersion of monomers dissolved in a polymerization initiator and stir the mixture. During the impregnation process, virtually no polymerization occurs.
It should be operated at a sufficiently low temperature in relation to the decomposition temperature of the polymerization initiator used, generally between room temperature and 100°C. In this process, the amount of free monomer is equal to the amount of monomer used.
Impregnate the monomer to less than 20% by weight.
Since EVA is relatively compatible with vinyl monomers,
Even if less than 20% by weight of monomers are free before the start of polymerization, these monomers will impregnate the EVA particles during polymerization, so the polymer particles obtained by polymerizing these monomers will not be modified. It does not precipitate independently from the EVA particles. The impregnation time is usually about 2 to 8 hours. The content of EVA particles and vinyl monomer in the aqueous dispersion is usually about 5 to 100 parts by weight per 100 parts by weight of water. Such aqueous dispersions can be maintained in a stable dispersed state simply by sufficient stirring, but dispersions can be prepared more easily and stably by using an appropriate suspension stabilizer. can. In this case, suspension stabilizers that can be used generally include those that can be used as suspension stabilizers during aqueous suspension polymerization of vinyl monomers, and specific examples include polyvinyl alcohol, methyl cellulose,
Water-soluble polymer substances such as hydroxycellulose, anionic surfactants such as alkylbenzene sulfonates, nonionic surfactants such as polyoxyethylene alkyl ethers, or water-insoluble inorganic salts such as magnesium oxide and calcium phosphate, etc. 0.01 for water alone or in combination
It is used in amounts of ~10% by weight. Vinyl monomer (and polymerization initiator) in EVA particles
When impregnating, plasticity, lubricant, antioxidant,
(These auxiliary materials may already be added to the EVA, or may be added after polymerization). Polymerization If the aqueous dispersion thus prepared is heated to a temperature above which the polymerization initiator used decomposes at an appropriate rate, the impregnated vinyl monomers will polymerize and be modified. EVA particles are generated. Since radical polymerization is to be carried out, heating should be carried out in an atmosphere substantially free of oxygen, and it is preferable to appropriately stir the aqueous dispersion during polymerization. The polymerization temperature is determined in relation to the decomposition temperature of the polymerization initiator used, but is generally about 50 to 150°C.
The polymerization temperature need not be constant throughout the polymerization period. The polymerization time is usually about 2 to 10 hours. The polymerization pressure is usually about normal pressure to 10 kg/cm 2 . In addition, n-butyl mercaptan,
It is preferable to add a chain transfer agent such as n-dodecylmercaptan or t-dodecylmercaptan. After polymerization, if a treatment similar to the post-treatment of normal aqueous suspension polymerization of vinyl monomers (e.g. styrene) is performed, the shape of the EVA particles used will be maintained almost unchanged and can be used immediately as a molding material. Modified EVA particles that can be obtained are obtained. The modified EVA (i.e., component (1)) in the present invention is EVA containing a polymer made of uniformly dispersed vinyl monomers, or an EVA in which vinyl monomers are grafted onto the polymer backbone of EVA, or It is estimated that the composition is a mixture of
It does not exist separately from EVA particles. When using aromatic vinyl monomer-modified EVA, unmodified EVA may be mixed with the modified EVA as long as the monomer unit content is within the range of 5 to 60% by weight. The effects of the present invention can be achieved. Therefore, component (1) of the present invention is directly modified.
In addition to EVA, it also includes those diluted with unmodified EVA and having an aromatic vinyl monomer content in the range of 5 to 60% by weight. In addition, the ethylene copolymer containing an unsaturated carboxylic acid or its derivative, which is another component (2) constituting the heat sealing material used in the present invention, refers to ethylene (in some cases, ethylene and other α-olefin) and a copolymerizable unsaturated carboxylic acid or a derivative thereof (hereinafter referred to as unsaturated organic acids). In this case, the content of ethylene is 50
% by weight or more. As used herein, the term copolymers refers to random, block and graft copolymers. These alone are
Alternatively, two or more types can be used in combination. Unsaturated organic acids mean unsaturated organic salts such as acrylic acid, methacrylic acid, fumaric acid, maleic acid, and itaconic acid, or derivatives thereof such as esters, metal salts, amides, imides, and anhydrides. Specific examples of ethylene copolymers containing unsaturated organic acids include ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers and metal ion crosslinked resins thereof, ethylene-ethyl acrylate copolymers, maleic anhydride, etc. Examples include acid-grafted polyethylene, maleic anhydride-grafted ethylene-vinyl acetate copolymer, and the like. When using the heat sealing material used in the present invention, other polymers, such as MI0 .5 to 100 g/10 min of low density polyethylene can be added. Furthermore, thermoplastic elastomers such as ethylene-propylene copolymer rubber, styrene-butadiene copolymer rubber, and styrene-conjugated diolefin block copolymer rubber can be added for the purpose of imparting impact resistance. The blending ratio of the modified EVA, which is component (1), and the unsaturated organic acid-containing ethylene copolymer, which is component (2), is 10 to 100 parts by weight of component (1) to 90 parts by weight of component (2). ~
0 parts by weight, preferably 50 to 100 parts by weight of component (1) and 50 to 0 parts by weight of component (2). If component (1) is less than 10 parts by weight, it is not preferable because the peel strength is highly dependent on the sealing temperature. Next, the mixed composition of each of these components is prepared using a batch kneading machine such as a Banbury mixer or a roll.
It can be easily obtained using a continuous extruder such as a single screw extruder or a twin screw extruder. There is no particular limitation on the order of blending; for example, for a composition consisting of modified EVA, unmodified EVA, and an ethylene copolymer containing unsaturated organic acids, these three components may be blended simultaneously in a kneader. Alternatively, a kneaded product of modified EVA and unmodified EVA (corresponding to component (1)) may be prepared and the unsaturated organic acid-containing ethylene copolymer may be mixed therein. Alternatively, modified EVA may be mixed in a kneader for mixing the unsaturated organic acid-containing ethylene copolymer and unmodified EVA. Next, as briefly explained above with reference to FIG. It is sufficient that these materials are used in the sealing part, and other parts may be made of paper, metal foil, or other resins (polyamide, cellophane, polyethylene terephthalate, polycarbonate, etc.). However, due to the production process residue, generally a laminated material is used in which paper, metal foil, other resin, etc. and a chlorine-containing vinyl compound polymer are laminated, and this chlorine-containing vinyl compound polymer is used. The layer is formed so that it lies inside the container. Of course, a container made only of a chlorine-containing vinyl compound polymer may also be used. Furthermore, the method of using the sealing material of the present invention achieves the object if it is used for at least one of the sealing part of the container and the sealing part of the lid. Moreover, although it is sufficient to use it only for the sealing part, it is generally used in the form of a laminate with other materials. As a method for forming the sealing material of the present invention on either the container or the sealing portion of the lid, a film is formed by a known film forming method such as an inflation method or a T-die method, and this film is then applied to the container. or by extrusion coating, dry lamination, wet lamination, hot melt coating, or both. Examples of methods include coextrusion lamination or coextrusion coating. The sealing portion of the container can be sealed using known techniques such as pressurized heat sealing using a heat sealer, impact heat sealing, dielectric sealing, and ultrasonic sealing. It will be done. Hereinafter, the effects of the present invention will be explained with reference to Examples. Since the evaluation of easy peelability was carried out using sheets or films, such examples will be shown. Example 1 20 kg of pure water and 600 g of tribasic calcium phosphate and 0.6 g of sodium dodecylbenzenesulfonate as suspending agents were added to an autoclave with a capacity of 50 mm to form an aqueous medium, and to this was added ethylene-vinyl acetate copolymer (MI15 g). /10 minutes, specific gravity 0.950, vinyl acetate content 28% by weight) 7 kg of particles were suspended by stirring. Separately, as a polymerization initiator, 3 g of benzoyl peroxide and 3 g of t-butyl peroxyvivalate were dissolved in 3 kg of styrene, and this was added to the suspension system, and the temperature inside the autoclave was raised to 50°C. The mixture was held for 3 hours to impregnate styrene containing a polymerization initiator into the ethylene-vinyl acetate copolymer particles. This aqueous suspension was heated to 60°C and maintained at this temperature for 3 hours and then at 90°C for 7 hours to complete polymerization. The styrene content in the obtained modified particles is approximately
It was confirmed that 30% by weight was present (reaction rate omitted).
100%). The modified resin alone and the modified resin and ethylene-ethyl acrylate copolymer (manufactured by Nippon Unicar Co., Ltd.)
A predetermined amount of DPDJ8026 (hereinafter referred to as EEA) was blended using a 30 mm diameter T-die film forming machine.
Each film was formed into a film with a thickness of about 50Ό at a molding temperature of 160 to 180°C. These films and 7Ό thick aluminum foil were pasted together with an adhesive to form a laminated film.
The modified resin layer of this laminated film is used as a sealing surface,
A 0.2 mm thick polyvinyl chloride sheet was heat sealed. The sealing conditions were as follows: a hot plate heat sealer was used, the sealing width was 5 mm, the sealing pressure was 2 Kg/cm 2 , the sealing time was 2 seconds, and the sealing temperature was 130 to 190°C. Peel strength was measured using a Schottsper type tensile tester at a sample width of 15 mm and a tensile speed.
The 180 degree peel strength was measured at 23°C at 300 mm/min. The results are shown in Table 1.
ãè¡šã
å®æœäŸ ïŒ
å®æœäŸïŒã«æºæ ããæ¹æ³ã§ã¹ãã¬ã³å«éãã»ãŒ
50ééïŒ
ïŒåå¿çç¥100ïŒ
ïŒååšããæ¹è³ªæš¹èã
åŸãã該æ¹è³ªæš¹èãšãšãã¬ã³âé
¢é
žããã«å
±éå
äœïŒMI15ïœïŒ10åãæ¯é0.943ãé
¢é
žããã«å«é
20ééïŒ
ïŒåã³EEAãæå®éãã¬ã³ãããåŸã
åçŽ50ÎŒã®ãã€ã«ã ãšããããã®ãã€ã«ã ãš7ÎŒå
ã®ã¢ã«ãããŠã ç®ãšãæ¥çå€ã§è²Œåãããæ¹è³ªæš¹
èå±€ãå°çé¢ãšãã0.20mmåã®ããªå¡©åããã«ã·
ãŒããç±å°çããŠããã®å¥é¢åŒ·åºŠã枬å®ãããè©Š
éšæ³ã¯å®æœäŸïŒãšåæ§ã§ãããçµæã第ïŒè¡šã«ç€º
ãã[Table] Example 2 The styrene content was approximately reduced by the method in accordance with Example 1.
A modified resin containing 50% by weight (reaction rate approximately 100%) was obtained. The modified resin and ethylene-vinyl acetate copolymer (MI 15 g/10 min, specific gravity 0.943, vinyl acetate content
After blending a predetermined amount of (20% by weight) and EEA,
Each film was about 50Ό. This film and a 7 Όm thick aluminum foil were pasted together with an adhesive, the modified resin layer was used as the sealing surface, a 0.20 mm thick polyvinyl chloride sheet was heat sealed, and the peel strength was measured. The test method is the same as in Example 1. The results are shown in Table 2.
ãè¡šã
æ¯èŒäŸ ïŒ
äœå¯åºŠããªãšãã¬ã³ïŒMI8ïœïŒ10åãæ¯é
0.918ïŒç²åãšã¹ãã¬ã³ãçšããŠå®æœäŸïŒã«æºæ
ããæ¹æ³ã§ã¹ãã¬ã³å«éã»ãŒ30ééïŒ
ã®æ¹è³ªäœå¯
床ããªãšãã¬ã³ïŒåå¿çç¥100ïŒ
ïŒãåŸãã該æ¹
質暹èåç¬åã³è©²æ¹è³ªæš¹è50éééšãšEEA50é
ééšãšããã¬ã³ããããµã³ãã«ããšãã¬ã³âé
¢é
ž
ããã«å
±éåäœïŒMI15ïœïŒ10åãæ¯é0.943ãé
¢
é
žããã«å«é20ééïŒ
ïŒåç¬ãåã³ã該ãšãã¬ã³
âé
¢é
žããã«å
±éåäœ50éééšãšEEA50éééš
ãšããã¬ã³ããããµã³ãã«ãåçŽ50ÎŒã®ãã€ã«ã
ãšãããã®ãã€ã«ã ãš7ÎŒåã®ã¢ã«ãããŠã ç®ãš
ã®ç©å±€ãã€ã«ã ãäœããæ¹è³ªæš¹èå±€ãå°çé¢ãšã
ãŠ0.2mmåã®ããªå¡©åããã«ã·ãŒããç±å°çãã
ãã®å¥é¢åŒ·åºŠã枬å®ãããè©Šéšæ³ã¯å®æœäŸïŒãšå
æ§ã§ãããçµæã第ïŒè¡šã«ç€ºãã
該æ¹è³ªäœå¯åºŠããªãšãã¬ã³åç¬ããã³ãããš
EEAãšã®ãã¬ã³ãç©ãšãšãã¬ã³âé
¢é
žããã«å
±
éåäœåç¬ã®ãã®ã¯è¢«çäœïŒããªå¡©åããã«ïŒãš
ã®å°ç匷床ã匱ããæ¬çºæã®ç®ççšéã«ã¯äžé©ã§
ããããŸããšãã¬ã³âé
¢é
žããã«å
±éåäœãš
EEAã®ãã¬ã³ãç³»ã¯å¥é¢åŒ·åºŠã®æž©åºŠäŸåæ§ãé
åžžã«å€§ããå®çšäžã®åé¡ãããã[Table] Comparative example 1 Low density polyethylene (MI8g/10min, specific gravity
Modified low-density polyethylene containing approximately 30% by weight of styrene (reaction rate approximately 100%) was obtained in accordance with Example 1 using particles (0.918) and styrene. Samples of the modified resin alone, a blend of 50 parts by weight of the modified resin and 50 parts by weight of EEA, ethylene-vinyl acetate copolymer (MI 15 g/10 min, specific gravity 0.943, vinyl acetate content 20% by weight) alone, and Samples obtained by blending 50 parts by weight of the ethylene-vinyl acetate copolymer and 50 parts by weight of EEA were made into films each having a thickness of approximately 50 ÎŒm, a laminated film was made with this film and aluminum foil having a thickness of 7 ÎŒm, and the modified resin layer was sealed. Heat-seal a 0.2 mm thick polyvinyl chloride sheet as the surface.
Its peel strength was measured. The test method is the same as in Example 1. The results are shown in Table 3. The modified low density polyethylene alone and together with it
Blends with EEA and ethylene-vinyl acetate copolymers alone have too weak a sealing strength with the adherend (polyvinyl chloride) and are unsuitable for the purpose of the present invention. Also, ethylene-vinyl acetate copolymer and
EEA blend systems have a practical problem because the peel strength has a very large temperature dependence.
ãè¡šã
å®æœäŸ ïŒ
å®æœäŸïŒã«æºæ ããæ¹æ³ã§ããšãã¬ã³âé
¢é
žã
ãã«å
±éåäœïŒMI30ïœïŒ10åãæ¯é0.953ãé
¢é
ž
ããã«å«é33ééïŒ
ïŒãçšããŠãã¹ãã¬ã³å«é10
ééïŒ
ã®æ¹è³ªæš¹èãåŸãã該æ¹è³ªæš¹èåç¬ã該æ¹
質暹è20éééšãšãšãã¬ã³âé
¢é
žããã«å
±éåäœ
ïŒMI2ïœïŒ10åãæ¯é0.938ãé
¢é
žããã«å«é16é
éïŒ
ïŒ80éééšãšã®ãã¬ã³ãç©åã³è©²æ¹è³ªæš¹è20
éééšãšEEA80éééšãšã®ãã¬ã³ãç©ãåçŽ50ÎŒ
ã®ãã€ã«ã ãšãããã®ãã€ã«ã ãš7ÎŒåã®ã¢ã«ã
ããŠã ç®ãšã®ç©å±€ãã€ã«ã ãäœããæ¹è³ªæš¹èå±€ã
å°çé¢ãšããŠ0.2mmåã®ããªå¡©åããã«ã·ãŒãã
ç±å°çãããã®å¥é¢åŒ·åºŠã枬å®ãããè©Šéšæ³ã¯å®
æœäŸïŒãšåæ§ã§ãããçµæã第ïŒè¡šã«ç€ºãã[Table] Example 3 Using a method based on Example 1, ethylene-vinyl acetate copolymer (MI 30 g/10 min, specific gravity 0.953, vinyl acetate content 33% by weight) was used to produce a styrene content of 10%.
% modified resin by weight was obtained. The modified resin alone, a blend of 20 parts by weight of the modified resin and 80 parts by weight of ethylene-vinyl acetate copolymer (MI2g/10 min, specific gravity 0.938, vinyl acetate content 16% by weight), and the modified resin 20
Approximately 50Ό of a blend of 80 parts by weight and 80 parts by weight of EEA
A laminated film was made from this film and a 7Ό thick aluminum foil, and a 0.2mm thick polyvinyl chloride sheet was heat sealed using the modified resin layer as the sealing surface, and its peel strength was measured. The test method is the same as in Example 1. The results are shown in Table 4.
第ïŒå³ã¯æ圢容åšãè¡šãããïŒïœïŒïŒïœã¯å°ç
å±€ïŒå°ããšãäžæ¹ãæ¬çºæå°çææã§ãããïŒãïŒ
ïœïŒïŒïœã¯å®¹åšåºæïŒã©ã¡ããäžæ¹ã¯åå±€ã®å Žå
ããããïŒãïŒã¯å°çéšãè¡šããã
FIG. 1 represents a molded container. 1a and 1b are sealing layers (at least one is the sealing material of the present invention), 2
a and 2b are container base materials (one of them may be a single layer), and 3 is a sealed portion.
Claims (1)
ïŒ ãšè³éŠæããã«åéäœ60ãïŒééïŒ ãšãã°ã©ã
ãæ¡ä»¶ã«ä»ããŠåŸãããæ¹è³ªæš¹è10ã100éééšã
ããã³(2)äžé£œåã«ã«ãã³é žåã¯ãã®èªå°äœãå«æ
ãããšãã¬ã³å ±éåäœ90ãïŒéééšãäž»æåãšã
ãŠãªãå¥é¢å¯èœãªå¯å°ç±å°çéšãæããããšãç¹
城ãšãããå¡©çŽ å«æããã«ååç©éåäœãäž»æå
ãšããææãå°ãªããšãäžã€ã®å®¹åšæ§æææãšã
ãæéå°æ§å®¹åšã1 (1) 10 to 100 parts by weight of a modified resin obtained by subjecting 40 to 95% by weight of an ethylene-vinyl acetate copolymer and 60 to 5% by weight of an aromatic vinyl monomer under grafting conditions;
and (2) a chlorine-containing vinyl compound polymer characterized by having a removable hermetically sealed portion consisting mainly of 90 to 0 parts by weight of an ethylene copolymer containing an unsaturated carboxylic acid or a derivative thereof. An easy-to-open container whose main component is at least one container constituent material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056171A JPS57170951A (en) | 1981-04-14 | 1981-04-14 | Easily releasable, heat sealable material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056171A JPS57170951A (en) | 1981-04-14 | 1981-04-14 | Easily releasable, heat sealable material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57170951A JPS57170951A (en) | 1982-10-21 |
JPH0212825B2 true JPH0212825B2 (en) | 1990-03-28 |
Family
ID=13019647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56056171A Granted JPS57170951A (en) | 1981-04-14 | 1981-04-14 | Easily releasable, heat sealable material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57170951A (en) |
-
1981
- 1981-04-14 JP JP56056171A patent/JPS57170951A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS57170951A (en) | 1982-10-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2015098602A (en) | Extrudable barrier polymer compositions, process for preparing said compositions, and monolayer or multilayer structures comprising said compositions | |
US5178946A (en) | Resin laminates | |
JPH05269946A (en) | Thermoplastic polymer laminated matter | |
JPH0142967B2 (en) | ||
JP2015042738A (en) | Thermoplastic resin composition for sealant material | |
JPH0212825B2 (en) | ||
JPH0238468B2 (en) | ||
JP3473250B2 (en) | Thermoplastic resin composition, easy-open packaging and easy-open laminate | |
JPS6248698B2 (en) | ||
JP3489350B2 (en) | Thermoplastic resin composition | |
JP3489349B2 (en) | Heat sealable thermoplastic resin composition | |
JP3312951B2 (en) | Olefin-based thermoplastic resin composition | |
JP3412411B2 (en) | Lid material for packaging containers and packaging containers | |
JP3489347B2 (en) | Resin composition for heat sealing | |
JP3794184B2 (en) | Easy-open container | |
JP3794183B2 (en) | Easy-open container | |
JP3702730B2 (en) | Polymer composition for easily openable sealant | |
JP3343438B2 (en) | Olefin-based thermoplastic resin composition | |
JP3990160B2 (en) | Heat seal lacquer composition | |
JPH0127116B2 (en) | ||
JPH10204413A (en) | Easily releasable film | |
WO1998032810A1 (en) | Resin film for sealant | |
JPH11100483A (en) | Resin film for easily openable sealant | |
JPH10202810A (en) | Easily unsealable container | |
JPS6367484B2 (en) |