发明名称 |
Process and apparatus for the manufacture of objects of crystalline polystyrene |
摘要 |
Crystalline polystyrene is thermoformed by extruding molten material into a temperature controlled roller press having press rollers and draw rollers separated by a support roller. The buildup of sheet between the support and draw roller is controlled. The edges of the sheet are heated and then gripped by a first set of s
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申请公布号 |
US4409173(A) |
申请公布日期 |
1983.10.11 |
申请号 |
US19810319242 |
申请日期 |
1981.11.09 |
申请人 |
O.M.V. SPA |
发明人 |
PADOVANI, PIETRO |
分类号 |
B29C45/00;B29C51/00;B29C51/10;B29C51/18;B29C51/42;B29C51/46;(IPC1-7):D01D5/12 |
主分类号 |
B29C45/00 |
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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