发明名称 Continuous submerged foaming of thermoplastic resin
摘要 Continuous method and apparatus for treatment of a solid material submerged in a body of liquid wherein the material is sticky and/or has weak tensile strength. The material is supported, while it is so submerged, by a dynamic layer of the liquid lying between the material and a moving surface. The method is illustrated by heating and thereby foaming a strip of heat foamable thermoplastic resin while it is held submerged in a denser heat transfer liquid by a dynamic layer of that liquid generated by a moving belt above the foaming material. In an example, expandable high density polyethylene strip is foamed continuously while it is so held submerged in molten salt.
申请公布号 US4155965(A) 申请公布日期 1979.05.22
申请号 US19770757703 申请日期 1977.01.07
申请人 DOW CHEMICAL CO THE 发明人 ALLADA, SAMBASIVA R
分类号 B29C44/34;C08J9/06;C08J9/14;(IPC1-7):B29D27/00;F28D11/02;F28F23/02 主分类号 B29C44/34
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