| 发明名称 |
Heat sealing apparatus and method |
| 摘要 |
Profiled heat seals in plastic film are provided by opposed profiled heat sealing platens supported on endless chains. The platens are heated by contact with associated heating drums.
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| 申请公布号 |
US4419167(A) |
申请公布日期 |
1983.12.06 |
| 申请号 |
US19820376986 |
申请日期 |
1982.05.10 |
| 申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
HAY, II, ROBERT A.;BERGMAN, OSWALD |
| 分类号 |
B29C65/18;B29C65/24;B31B19/64;(IPC1-7):B30B5/06;B30B15/34 |
主分类号 |
B29C65/18 |
| 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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