期刊 多层共挤出塑料薄膜机头的结构改进与发展  被引量:9

Structure Improvement and Development of Coextrusion Dies for Multi-layer Plastics Films

作  者:苗立荣[1] 张玉霞[2] 薛平[1] 

机构地区:[1]北京化工大学机电工程学院 [2]北京工商大学轻工业塑料加工应用研究所

出  处:《中国塑料》2010年第2期11-20,共10页China Plastics

Structure Improvement and Development of Coextrusion Dies for Multi-layer Plastics Films

摘  要:介绍了多层共挤出塑料薄膜机头——多层共挤出流延塑料薄膜机头(平膜法)和多层共挤出吹塑塑料薄膜机头(管膜法)的结构、优缺点及其最近10年来的发展状况。在平膜法机头中主要介绍了多流道式机头和喂料块式机头及供料块与多流道组合式狭缝式机头;管膜法机头中主要介绍了套管式圆柱体多层共挤出机头和叠加型圆柱体多层共挤出机头。多层共挤出薄膜机头的发展主要体现在机头结构上的不断创新以及物料的适应性不断增强和薄膜层数的不断增加等方面。

Typical structure and features of coextrusion dies for multi-layer plastics films were introduced, including dies for casting multi-layer films (flat film method) and dies for blown muhilayer films (tubular film method). Major dies for casting multi-layer films include manifold dies, feed block dies and feed-block-manifold integrated dies. Dies for blown films involve cylindrical mandrel dies and cylindrical stack dies. Development situation of them in recent 10 years were also described in detail, covering innovative structure, enhanced adaptability of polymers and increasing layers of the films.

关 键 词:多层 共挤出 机头 塑料薄膜 平膜法 管膜法 多流道式机头 喂料块式机头 螺旋芯棒式机头 叠加型机头 

multi-layer  manifold die  feed block coextrusion  die  plastics film  flat film method  tubular film method  die  spiral mandrel die  stack die 

分 类 号:TQ320.663[化学工程—合成树脂塑料工业]

 

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