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公开(公告)号:US20080224346A1
公开(公告)日:2008-09-18
申请号:US12067361
申请日:2006-06-05
CPC分类号: B29C55/143 , B29C48/08 , B29C48/91 , B29C48/914 , B29C48/9175 , B29C48/919 , B29C55/005 , B29K2105/04 , B29K2105/16 , C08J5/18
摘要: A film (5) is extruded from plastic material by means of an extruder. Material is mixed into the plastic (5a) of the plastic film (5) before the extrusion so that cavitation bubbles are formed in the material particles mixed into the plastic (5a) when the plastic film is stretched. The film (5) is orientated by stretching. After the extrusion the plastic film (5) is cooled slowly below the crystallization point of the plastic material before the orientation.
摘要翻译: 薄膜(5)通过挤出机从塑料材料挤出。 在挤出之前将材料混合到塑料膜(5)的塑料(5a)中,使得当塑料膜被拉伸时,在混合到塑料(5a)中的材料颗粒中形成气泡。 膜(5)通过拉伸取向。 在挤出之后,在取向之前,将塑料膜(5)缓慢地冷却到塑料材料的结晶点之下。