发明名称 |
HEAT-SEALED CLOSURE FOR POLYESTER CONTAINER AND CONTAINER HAVING SAID CLOSURE |
摘要 |
The present invention provides a strong heat seal to a thermoplastic polyester container which can withstand hot water treatment such as retorting, and to a heat sealed container. A heat-sealable closure is also provided. It is composed of a laminate consisting of a heat-seal layer comprising as a main component a copolymerized polyester resin having a softening temperature of 120 DEG C. and a glass-transition temperature of 30 DEG to 85 DEG C., a metal substrate, and an epoxy-phenol resin primer layer interposed between them. Preferably, the container has a heat seal portion composed of a thermoplastic polyester having a fusion temperature in the crystalline state of at least 200 DEG C. This polyester portion is oriented and crystallized or heat-crystallized.
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申请公布号 |
US5204181(A) |
申请公布日期 |
1993.04.20 |
申请号 |
US19900476497 |
申请日期 |
1990.06.12 |
申请人 |
TOYO SEIKAN KAISHA, LTD. |
发明人 |
SUZUKI, KOUJI;IMATANI, TSUNEO;KURASHIMA, HIDEO;TAIRA, KAZUO |
分类号 |
B32B15/08;B65D17/40;B65D77/20 |
主分类号 |
B32B15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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