发明名称 |
CONTAINER CLOSURES AND PROCESSES OF MAKING THEM |
摘要 |
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. |
申请公布号 |
ZA9107445(B) |
申请公布日期 |
1992.06.24 |
申请号 |
ZA19910007445 |
申请日期 |
1991.09.18 |
申请人 |
W.R. GRACE & CO.-CONN. |
发明人 |
STEVEN ANDREW CARL WHITE |
分类号 |
B29C39/02;B29C43/18;B29K9/00;B29K23/00;B29L31/26;B65D51/16;B65D53/06;C08J5/00;C08L23/06;C08L23/18;C08L23/22;C09K3/10 |
主分类号 |
B29C39/02 |
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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