发明授权
- 专利标题: Extruder and process for extruding a polymer
- 专利标题(中): 用于挤出聚合物的挤出机和方法
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申请号: US12736147申请日: 2009-03-18
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公开(公告)号: US08865041B2公开(公告)日: 2014-10-21
- 发明人: Gary Lindsay Pitman
- 申请人: Gary Lindsay Pitman
- 申请人地址: GB Hampshire
- 专利权人: Ineos Sales (UK) Limited
- 当前专利权人: Ineos Sales (UK) Limited
- 当前专利权人地址: GB Hampshire
- 代理机构: Nixon & Vanderhye P.C.
- 优先权: EP08103227 20080331
- 国际申请: PCT/EP2009/053204 WO 20090318
- 国际公布: WO2009/121721 WO 20091008
- 主分类号: B29C47/58
- IPC分类号: B29C47/58 ; B29C47/60 ; B29C47/38 ; B29C47/66 ; B29C47/00 ; B29C47/10
摘要:
Process for extrusion of polymer by feeding a polymer feedstock to the feed port of an extruder having (i) two or more barrel sections arranged sequentially from (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two screws each having a diameter of X, to (b) a downstream barrel section from which melted polymer is passed to a die and extruded, and (ii) a feed port for feeding polymer feedstock to be extruded into the extruder at its upstream end. The polymer feedstock is in the form of a powder, and the feed port area is a rectangular shape with width limited by the width of the upstream feed barrel section to 2*X and with a length greater than 2.5*X. The total area of the feed ports through which polymer feedstock is introduced is greater than 5*X2.
公开/授权文献
- US20110001261A1 EXTRUDER AND PROCESS FOR EXTRUDING A POLYMER 公开/授权日:2011-01-06