发明名称 |
Continuous process for production of latent crimp filaments |
摘要 |
A process for the production of crimped filaments of semi-crystalline polyolefins or blends of polyolefins with other materials by melt drawing at 100 meters per minute or less, rapidly and asymmetrically cooling at least a portion of the filaments, forming the filaments into a tow and subjecting the tow to a heat treatment without drawing at at least 100 DEG C. and thereafter drawing the filaments in two stages, the last of which is at a temperature of at least 70 DEG C. With the practice of the process of this invention, there is provided a useful crimp of at least two crimps per centimeter which develops after the filaments are relaxed and subjected to a further heat treatment which may be applied either to the filaments or to products produced therefrom when in a relaxed state subsequent to drawing.
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申请公布号 |
US4159297(A) |
申请公布日期 |
1979.06.26 |
申请号 |
US19760724095 |
申请日期 |
1976.09.17 |
申请人 |
MACKIE, JAMES & SONS LTD |
发明人 |
MACKIE, JOHN K P;MCMEEKIN, SAMUEL |
分类号 |
D01D5/23;D02J1/22;D04H3/16;(IPC1-7):B29C17/00;D01D5/22 |
主分类号 |
D01D5/23 |
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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