发明名称 |
Process of making staple fibers |
摘要 |
Improved staple fibers and processes for producing them are provided. The processes are particularly useful for forming staple fibers from poly(trimethylene terephthalate), especially carpet staple fibers. The processes include prewetting undrawn yarns and drawing the fibers under wet and warm conditions, thermo-fixing the texture, and drying at relatively low temperatures. Fibers produced according to the processes disclosed herein have improved properties and reduced brittleness as compared to fibers prepared using conventional processes.
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申请公布号 |
US7578957(B2) |
申请公布日期 |
2009.08.25 |
申请号 |
US20030733998 |
申请日期 |
2003.12.10 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
CHANG JING CHUNG;DOMMEL RICHARD LEE;VALTERIS RAMUNAS L.;LINEK ROBERT MAMORU;THOMPSON ALFRED HAROLD;AGARWAL NIRMAL KUMAS |
分类号 |
D01D5/088;D01D5/16;D01D5/22;D01F6/62;D02G1/02;D02G1/12;D04H1/42 |
主分类号 |
D01D5/088 |
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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