发明授权
US07442332B2 Method and apparatus for uniformly stretching thermoplastic film and products produced thereby
有权
用于均匀拉伸热塑性薄膜的方法和装置以及由此产生的产品
- 专利标题： Method and apparatus for uniformly stretching thermoplastic film and products produced thereby
- 专利标题（中）： 用于均匀拉伸热塑性薄膜的方法和装置以及由此产生的产品
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申请号： US10838920申请日： 2004-05-04
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公开(公告)号： US07442332B2公开(公告)日： 2008-10-28
- 发明人: Leopoldo V. Cancio , Thomas G. Mushaben , Robert M. Mortellite , Pai-Chuan Wu
- 申请人： Leopoldo V. Cancio , Thomas G. Mushaben , Robert M. Mortellite , Pai-Chuan Wu
- 申请人地址： US OH Mason
- 专利权人： Clopay Plastic Products Company, Inc.
- 当前专利权人： Clopay Plastic Products Company, Inc.
- 当前专利权人地址： US OH Mason
- 代理机构： Wood, Herron & Evans LLP
- 主分类号： B29C47/06
- IPC分类号： B29C47/06 ; B29C55/18
摘要：
Thermoplastic films and laminates are made by extrusion and stretching using differential speed rollers employing a short stretching gap of no more than one inch immediately after the extruded film product is formed. The method and apparatus control the thickness of the stretched film and impart desirable mechanical properties thereto such as film products with a high modulus for handling and suitable tensile for softness.
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