| 发明名称 |
STRUCTURAL PANEL OF RIBBED STRUCTURES OF THERMOPLASTIC RESIN |
| 摘要 |
Molten thermoplastic resin, e.g., polyethylene, is forced into a pattern on the surface of a rotating roll to form a web of ribs usually integrally molded to a continuous film; this web is of low density and has a high strength-to-weight ratio so as to be used for structural purposes and packaging. |
| 申请公布号 |
US3664906(A) |
申请公布日期 |
1972.05.23 |
| 申请号 |
USD3664906 |
申请日期 |
1970.01.26 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND CO. |
发明人 |
MARTVAL J. HARTIG |
| 分类号 |
B29C43/30;B29C53/24;B29C53/36;B29C65/00;B29C65/02;B29C65/10;B29C65/20;B65D65/38;B65D65/40;E04C2/36;(IPC1-7):32B3/12 |
主分类号 |
B29C43/30 |
| 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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