发明授权
- 专利标题： Process to produce thin film
- 专利标题（中）： 生产薄膜的工艺
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申请号： US878258申请日： 1992-05-04
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公开(公告)号： US5288437A公开(公告)日： 1994-02-22
- 发明人: Guenther Crass , Siegfried Janocha , Gisbert Bammert
- 申请人： Guenther Crass , Siegfried Janocha , Gisbert Bammert
- 申请人地址： DEX
- 专利权人： Hoechst Aktiengesellschaft
- 当前专利权人： Hoechst Aktiengesellschaft
- 当前专利权人地址： DEX
- 优先权： DEX4114670 19910506
- 主分类号： B29C47/06
- IPC分类号： B29C47/06 ; B29C35/02 ; B29C55/12 ; B29D7/01 ; B29L9/00 ; B32B27/00
摘要：
A process is described to produce ultra thin biaxially stretched film made of thermoplastic where at least two film webs are superimposed and stretched together in both the longitudinal and transverse directions. The film webs are subjected to a heat treatment before the first draw step. After stretching, the film webs are separated again from each other.
公开/授权文献
- US4735523A Vibratory compaction working machine 公开/授权日：1988-04-05
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