发明名称 |
METHOD FOR POST-TREATING PREEXPANDED PARTICLES OF POLYOLEFIN RESIN |
摘要 |
<p>Post-treatment method of polyolefin resin pre-expanded particles comprising: introducing the polyolefin resin pre-expanded particles foamed by using an inflammable blowing agent into an extraction vessel filled with steam previously; feeding an additional steam into the extraction vessel; extracting the inflammable blowing agent gas from the polyolefin resin pre-expanded particles; discharging the resulting steam which contains the extracted inflammable blowing agent gas from the extraction vessel continuously or intermittently; and liquefying the steam to separate and recover the inflammable blowing agent gas. According to the post-treatment method of polyolefin resin pre-expanded particles, the inflammable blowing agent can be extracted from the pre-expanded particles in a short period of time and the extracted inflammable blowing agent can be re-used. <IMAGE></p> |
申请公布号 |
EP0856547(A1) |
申请公布日期 |
1998.08.05 |
申请号 |
EP19970926262 |
申请日期 |
1997.06.16 |
申请人 |
KANEKA CORPORATION |
发明人 |
OCHIKOSHI, SHINOBU;FUKUI, HISATOSHI;NAKAMURA, KYOICHI;MIZUIKE, HIDEYA;AKAMATSU, NARUHIKO |
分类号 |
B29C44/34;B29C44/56;C08J9/22;(IPC1-7):C08J9/22 |
主分类号 |
B29C44/34 |
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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