公开(公告)号：US20090278278A1

公开(公告)日：2009-11-12

申请号：US12306655

申请日：2007-06-21

申请人： Kenzo Chikanari ,  Kazuhiro Asami

发明人： Kenzo Chikanari ,  Kazuhiro Asami

IPC分类号： B29C47/00

CPC分类号： B29C48/913 ,  B29C48/10 ,  B29K2023/06

摘要： A method of producing a polyolefin resin film comprising melt-extruding a polyolefin resin from a circular die toward the antigravity direction to form a tubular film and cooling the tubular film while receiving the film toward the antigravity direction, wherein a water-absorbing material containing water and having a width in the gravity direction of 5 mm or more is brought into contact with the peripheral surface of the tubular film to cool the film, at any position distant by 0 to 200 mm toward the gravity direction from the frost line obtained by air cooling.

摘要翻译： 一种聚烯烃树脂薄膜的制造方法，其特征在于，将聚烯烃树脂从圆形模头向抗重力方向熔融挤出，形成管状薄膜，同时将所述薄膜朝向所述反重力方向接受，同时冷却所述薄膜， 在5mm以上的重力方向上的宽度与管状膜的周面接触，在从空气中得到的霜冻线向着距重力方向远离0〜200mm的任何位置进行冷却 冷却。