发明名称 |
Process and apparatus for forming thermoplastic foams having an enlarged cross-sectional area by extruding a heat plastified gel into a shaping channel. |
摘要 |
Process and apparatus for the preparation of foam articles by extruding a heat-plastified foamable gel through a die orifice (14) into a zone of reduced pressure in a shaping channel wherein the gel is supported on a cushion of gas at the die face (24) and at least in the area of the channel near the orifice of the die and a restraining force is applied to the foam in the area where the foam surface has cooled to provide foams having an enlarged cross-sectional area. |
申请公布号 |
EP0002489(A1) |
申请公布日期 |
1979.06.27 |
申请号 |
EP19780101571 |
申请日期 |
1978.12.05 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
RATAFIA, MANUEL SHOLEM;SUH, KYUNG WON |
分类号 |
B29C47/90;B29B7/00;B29C44/50;B29C47/00;B29C47/14;B29C47/94;B29K105/04 |
主分类号 |
B29C47/90 |
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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