发明名称 |
Container closures and processes of making them. |
摘要 |
<p>Bottle gaskets are provided from a thermoplastic composition comprising a homogeneous blend of butyl rubber with other thermoplastic polymer. The gaskets provide an effective seal at a moderate pressure but permit venting at a higher pressure. They can be made by inserting molten heated thermoplastic material into the bottle cap and moulding it in the cap and cooling it to form the gasket.</p> |
申请公布号 |
EP0478109(A1) |
申请公布日期 |
1992.04.01 |
申请号 |
EP19910305089 |
申请日期 |
1991.06.05 |
申请人 |
W.R. GRACE & CO.-CONN. |
发明人 |
WHITE, STEVEN ANDREW CARL |
分类号 |
B29C43/18;B29C39/02;B29K9/00;B29K23/00;B29L31/26;B65D51/16;B65D53/06;C08J5/00;C08L23/06;C08L23/18;C08L23/22;C09K3/10 |
主分类号 |
B29C43/18 |
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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