发明名称 |
CLOSURE CAP WITH A LINERLESS SEAL AND METHOD OF AND APPARATUS FOR FORMING SUCH CLOSURE AND SEAL |
摘要 |
In combination, a container and a one piece, linerless cap and a method of forming the cap. The cap includes plastic and has a sealing surface which is softer than contiguous plastic portions as a result of its method of forming which includes stretching. In the method the cap is molded from plastic and includes a top wall and an outer depending skirt. Thereafter the top wall is engaged by a forming tool to create a stretched portion for sealing. |
申请公布号 |
CA1304041(C) |
申请公布日期 |
1992.06.23 |
申请号 |
CA19880569100 |
申请日期 |
1988.06.09 |
申请人 |
TRI-TECH SYSTEMS INTERNATIONAL, INC. |
发明人 |
THOMPSON, MORTIMER S. |
分类号 |
B29C59/02;B29C69/02;B29D99/00;B29L31/56;B65D41/04 |
主分类号 |
B29C59/02 |
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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