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公开(公告)号:US20050256215A1
公开(公告)日:2005-11-17
申请号:US11114249
申请日:2005-04-25
申请人: Theodore Burnham , Sung Cha , Robert Walat , Roland Kim , Jere Anderson , James Stevenson , Nam Suh , Matthew Pallaver
发明人: Theodore Burnham , Sung Cha , Robert Walat , Roland Kim , Jere Anderson , James Stevenson , Nam Suh , Matthew Pallaver
IPC分类号: B29C47/00 , B29C44/32 , B29C44/34 , B29C44/46 , B29C47/10 , B29C47/12 , B29C47/74 , B29K105/04 , C08J9/00
CPC分类号: B29C44/322 , B29C44/3446 , B29C44/3473 , B29C44/348 , B29C44/461 , B29C44/468 , B29C48/06 , B29C48/07 , B29C48/2886 , B29C48/29 , B29K2105/0005 , B29K2105/16
摘要: Continuous polymeric extrusion nucleation systems and methods useful for making polymeric microcellular foamed materials, including crystalline and semi-crystalline polymeric microcellular materials, are provided. Pressure drop rate is an important feature in some embodiments, and the invention provides systems for controlling these and other parameters. One aspect involves a multiple-pathway nucleator that is separated from a shaping die by a residence chamber. Another aspect involves a die for making advantageously thick articles, including a multiple-pathway nucleation section. Microcellular material can be continuously extruded onto wire, resulting in a very thin, essentially closed-cell microcellular insulating coating secured to a wire. Other very thin microcellular products can be fabricated as well.
摘要翻译: 提供了连续的聚合物挤出成核体系和用于制备聚合物微孔泡沫材料(包括结晶和半结晶聚合物微孔材料)的方法。 压降率在一些实施例中是重要的特征,本发明提供了用于控制这些和其它参数的系统。 一个方面涉及多通路成核剂,其通过驻留室与成形模分离。 另一方面涉及用于制造有利的厚制品的模具,包括多通道成核部分。 微孔材料可以连续地挤出到线上,从而形成非常薄的,基本上闭合的细胞微孔绝缘涂层,固定到导线上。 也可以制造其他非常薄的微细胞产品。