发明名称 |
Method of pressurizing treatment of pre-foamed particles of polyolefin resin |
摘要 |
A method for pressurizing pre-foamed particles of a polyolefin resin by maintaining the pre-foamed particles in an atmosphere of a pressurized gas to impart a predetermined internal pressure thereto, which comprises first maintaining the particles under a pressure which does not cause shrinkage to the particles, and then increasing the applied pressure gradually under conditions which do not cause shrinkage to the particles.
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申请公布号 |
US4443393(A) |
申请公布日期 |
1984.04.17 |
申请号 |
US19820447670 |
申请日期 |
1982.12.07 |
申请人 |
JAPAN STYRENE PAPER CORPORATION |
发明人 |
AKIYAMA, HIROYUKI;KUWABARA, HIDEKI;YAMAGUCHI, TORU;KISHIDA, MASAHIKO |
分类号 |
B29C67/00;B29B9/16;B29C44/00;B29C44/34;B29C59/00;B29K23/00;B29K105/04;C08J9/16;C08J9/22;C08J9/228;(IPC1-7):C08J9/22 |
主分类号 |
B29C67/00 |
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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