| 发明名称 |
PLASTIC CLOSURE WITH UNITARILY MOLDED, FOAMED SEALING LAYER |
| 摘要 |
A molded polymeric container closure comprising at least one substantially unfoamed polymer layer and an integrally molded foamed layer of the same polymer. |
| 申请公布号 |
CA1304715(C) |
申请公布日期 |
1992.07.07 |
| 申请号 |
CA19870550116 |
申请日期 |
1987.10.23 |
| 申请人 |
PERMIAN RESEARCH CORPORATION |
发明人 |
HAHN, GRANVILLE J. |
| 分类号 |
B65D41/04;B65D41/24;B65D41/34;B65D53/00 |
主分类号 |
B65D41/04 |
| 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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