发明名称 |
Retort-sterilizable laminated structure and process for preparation thereof |
摘要 |
Disclosed is a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable crystalline propylene type resin layer formed on one surface of the aluminum foil or sheet and a heat-resistant resin layer formed on the other surface of the aluminum foil or sheet, wherein the aluminum foil or sheet is heat-fusion-bonded to said crystalline propylene type resin layer through a layer of a modified olefin resin having a degree of crystallization of 15 to 95% and a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which the majority of the structural olefin units are propylene units and the minority of the structural olefin units are ethylene units. As the modified olefin polymer, a modified ethylene-propylene copolymer or a blend of a modified propylene type polymer with an ethylene type polymer is preferably employed.
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申请公布号 |
US4310578(A) |
申请公布日期 |
1982.01.12 |
申请号 |
US19790055004 |
申请日期 |
1979.07.05 |
申请人 |
TOYO SEIKAN KAISHA LIMITED |
发明人 |
KATSURA, TADAHIKO;SUZUKI, KENJI;ITO, SENJI |
分类号 |
B32B15/08;(IPC1-7):B32B15/08 |
主分类号 |
B32B15/08 |
代理机构 |
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代理人 |
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地址 |
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