发明授权
US4215530A Process and apparatus for manufacturing a drawn and twisted
multifilament synthetic yarn
失效
用于制造拉伸和捻合的复丝合成纱线的方法和设备
- 专利标题： Process and apparatus for manufacturing a drawn and twisted multifilament synthetic yarn
- 专利标题（中）： 用于制造拉伸和捻合的复丝合成纱线的方法和设备
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申请号： US2237申请日： 1979-01-09
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公开(公告)号： US4215530A公开(公告)日： 1980-08-05
- 发明人: Patrick Beau , Carlos M. Gabalda
- 申请人： Patrick Beau , Carlos M. Gabalda
- 申请人地址： FRX Roanne
- 专利权人： ASA S.A.
- 当前专利权人： ASA S.A.
- 当前专利权人地址： FRX Roanne
- 优先权： FRX7801437 19760113
- 主分类号： D01H7/86
- IPC分类号： D01H7/86 ; D01D11/00 ; D01H13/30 ; D02J1/22 ; D01H1/10
摘要：
In a process and apparatus for manufacturing drawn and twisted multifilament synthetic yarn an extruded and partially drawn filamentary synthetic yarn is subjected to a supplementary, simultaneous, drawing and twisting operation using a double twist spindle rotated such that the tension in the yarn causes drawing. After the spinning and drawing, the yarn is subjected to heat treatment under controlled tension and is then wound up.