发明名称 Apparatus for pre-expanding and molding expandable thermoplastic polymer particles
摘要 An energy saving and material conserving apparatus is provided for expanding and molding expandable thermoplastic polymer particles. Especially significant is the ability to produce molded objects of generally uniform density in the higher density range in the order of 4 - 15 pounds per square inch, or greater, as well as lower density molded objects due to improved control of the particle expansion.
申请公布号 US4060354(A) 申请公布日期 1977.11.29
申请号 US19750598508 申请日期 1975.07.22
申请人 FOSTER GRANT CO., INC. 发明人 SMITH, STUART B.
分类号 B29C44/34;(IPC1-7):B29D27/00 主分类号 B29C44/34
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