- 专利标题: Flexible tube of thermoplastic resin having poor melt flowability and production method and apparatus thereof
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申请号: US297015申请日: 1989-01-13
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公开(公告)号: US4938908A公开(公告)日: 1990-07-03
- 发明人: Takeshi Shiraki , Yosihiro Yoshimura
- 申请人: Takeshi Shiraki , Yosihiro Yoshimura
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX59-101712 19840522
- 主分类号: B29C47/00
- IPC分类号: B29C47/00 ; B29C47/24 ; B29C47/60 ; B29C47/66 ; B29K23/00 ; F16L11/06 ; F16L11/16 ; F16N11/06
摘要:
Disclosed is a method and apparatus for producing a flexible tube of a thermoplastic resin having poor melt flowability by melting a thermoplastic resin having poor melt flowability in a screw extruder, and melt-extruding the molten thermoplastic resin from a tube die having an L/D of 30-70 provided at a mandrel rotatable with the rotation of the screw.
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