发明名称 |
Steam draw-jet process for making partially-oriented polyamide yarns |
摘要 |
A coupled process for making partially-oriented polyamide yarn. Polyamide polymer is melt-spun at a withdrawal speed sufficient to produce a spun yarn having an elongation less than 175%. The spun yarn is subsequently subjected to a coupled drawing step in a draw zone to reduce the elongation to the range of 50 to 100%. In the draw zone, the yarn passes through an enclosure with a gaseous fluid jet having a temperature of at least about 190 degrees C. which impinges on the yarn in an intersecting relationship to the path of yarn travel.
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申请公布号 |
US5284612(A) |
申请公布日期 |
1994.02.08 |
申请号 |
US19920977687 |
申请日期 |
1992.11.23 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LEE, LIN-FA |
分类号 |
D01D5/16;D01F6/60;D02G1/16;(IPC1-7):B29C47/88;D01D5/12;D01D10/02;D02J1/22 |
主分类号 |
D01D5/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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