发明申请
US20030141625A1 Process for forming a multilayer coextruded article and articles therefrom
审中-公开
用于形成多层共挤压制品及其制品的方法
- 专利标题： Process for forming a multilayer coextruded article and articles therefrom
- 专利标题（中）： 用于形成多层共挤压制品及其制品的方法
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申请号： US10371698申请日： 2003-02-21
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公开(公告)号： US20030141625A1公开(公告)日： 2003-07-31
- 发明人: Marcus David Shelby , Lavonna Suzanne Buehrig , Benjamin Bradford Gamble
- 主分类号： B29C047/06
- IPC分类号： B29C047/06
摘要：
A process for coextrusion-molding a multilayer article comprising coextruding at a selected coextuding temperature (i) a first outer polymer resin layer having a) a viscosity, b) a melting temperature, and c) a degradation temperature at the selected coextuding temperature, and (ii) a second inner polymer resin layer having a) a viscosity, b) a melting temperature, and c) a degradation temperature at the selected coextuding temperature, wherein the ratio of the outer polymer resin viscosity to the inner polymer resin viscosity at the coextuding temperature is less than or equal to about 1 and the coextuding temperature is above the melting temperature of the highest melting resin and below the degradation temperature of the lowest degrading resin to form a multilayer article.
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