Title:
【発明の名称】プラスチックフィルムを製造するための方法および装置、およびプラスチックフィルム
Document Type and Number:
Japanese Patent JP2002510565
Kind Code:
A
Abstract:
A film is extruded from plastic material by an extruder. The film is orientated after extrusion. Material is mixed into the plastic so that when the plastic film is stretched, cavitation bubbles are formed in the material particles mixed into the plastic. During the orientation, gas is arranged to the plastic film under high pressure so that the gas diffuses in the cavitation bubbles and causes overpressure in them. Thus, it is possible to make a thin foamed film with a foaming degree over 70%.
Inventors:
Kirya Finen, Cali
Application Number:
JP2000542164A
Publication Date:
April 09, 2002
Filing Date:
April 01, 1999
Export Citation:
Assignee:
Conenor Osaki Yukiture
International Classes:
B29C48/08; B29C48/305; B29C55/02; B29C48/90; B29C55/14; (IPC1-7): B29C55/02; B29C55/14
Attorney, Agent or Firm:
Akira Asamura (3 outside)