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公开(公告)号:US4701116A
公开(公告)日:1987-10-20
申请号:US780846
申请日:1985-09-27
CPC分类号: B29C47/0026 , B29C47/20 , B29K2705/00
摘要: An extrusion die for a blow head for making blown plastic films comprises inner and outer rings, which are made of a ferrous material, particularly steel, and define between them an annular orifice. Those surfaces of the inner and outer rings which define the die orifice are covered by a layer consisting of a metallic material having a higher thermal conductivity than steel.
摘要翻译: 用于制造吹塑塑料膜的吹塑头的挤出模具包括由铁质材料,特别是钢制成的内圈和外圈,并在它们之间限定环形孔。 限定模孔的内圈和外圈的那些表面被由具有比钢更高的导热性的金属材料组成的层覆盖。