发明授权
US4830806A Method and device for the manufacture of a high optical quality
transparent sheet or plastic
失效
用于制造高光学质量透明片材或塑料的方法和装置
- 专利标题： Method and device for the manufacture of a high optical quality transparent sheet or plastic
- 专利标题（中）： 用于制造高光学质量透明片材或塑料的方法和装置
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申请号： US66012申请日： 1987-06-24
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公开(公告)号： US4830806A公开(公告)日： 1989-05-16
- 发明人: Gerard Daude , Jean-Louis Bravet , Michel Moncheaux , Sylvie Drujon , Gerard Dimier
- 申请人： Gerard Daude , Jean-Louis Bravet , Michel Moncheaux , Sylvie Drujon , Gerard Dimier
- 申请人地址： FRX Courbevoie
- 专利权人： Saint-Gobain Vitrage
- 当前专利权人： Saint-Gobain Vitrage
- 当前专利权人地址： FRX Courbevoie
- 优先权： FRX8609081 19860624
- 主分类号： C08J5/18
- IPC分类号： C08J5/18 ; B05D7/02 ; B29C35/04 ; B29C35/06 ; B29C41/12 ; B29C41/24 ; B29C41/28 ; B29C41/46 ; B29C71/02 ; B29D7/01 ; B29K75/00 ; B29L7/00 ; B32B17/10
摘要：
The invention is directed to the method, products and apparatus for the manufacture of a high optical quality sheet of plastic comprising a polyurethane layer having energy-absorbing properties obtained by reactive pouring or reactive pulverization of the reaction components.In accordance with the invention, the polyurethane layer is treated, while it is in a state of ongoing polymerization corresponding to an NCO/CH ratio of less than 0.7, with water in a liquid or vapor form and then subsequently, after rolling with an interpolated film, stocking and unrolling, the layer is subjected to heat treatment.
公开/授权文献
- USD397780S Firelog 公开/授权日：1998-09-01
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