发明名称 |
HEATING OF A FOAM CUP TO INCREASE STIFFNESS |
摘要 |
The method of improving the stiffness of a polystyrene foam cup having a generally closed cell foam sidewall and bottom and a solid plastic film coating on at least the outer surface thereof comprising placing said cup around a heated mandrel, said mandrel having an outside diameter sufficiently less than an inside diameter of said cup to allow the cup sidewall to expand, at a temperature and for a time sufficient to expand the sidewall. |
申请公布号 |
CA1324716(C) |
申请公布日期 |
1993.11.30 |
申请号 |
CA19890600203 |
申请日期 |
1989.05.19 |
申请人 |
AMOCO CORPORATION |
发明人 |
SCHUBERT, JOHN C.;LEDUC, EDWARD C. |
分类号 |
B29C35/02;B29C44/56;B32B43/00 |
主分类号 |
B29C35/02 |
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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