Original document(10 pages)  中文版
    A method and apparatus for making a plastic film wherein an annular film preform is extruded by an extruder (1). The extruder (1) comprises a nozzle (6) for spreading and flattening the annular film preform into a flat film (5).
Application Number
申请号		 99804631 Application Date
申请日		 1999.04.01
Title 名称 Method and apparatus for making plastic film
Publication Number
公开号		 1295510 Publication Date
公开日		 2001.05.16
Approval Pub. Date Granted Pub. Date
International Classification 分类号 B29C47/14
Applicant(s) Name
申请人		 Nextrom Holding S.A.
Address 地址
Inventor(s) Name 发明人 Hari Hirjavainen
Attorney & Agent 代理人 yi yongmei

  
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