发明名称 |
Process for treating a polyester bicomponent fiber |
摘要 |
The invention provides a process for treating a polyester fiber comprising the steps of providing a bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) which has been heat-treated at a first temperature and cooled to lower than about 70° C. and has an initial crimp contraction value and a developed crimp contraction value, applying tension to the fiber of about 0.001 to 0.088 dN/tex, heat-treating the fiber at a second heat-treating temperature no lower than about 75° C. and no higher than the first heat-treating temperature, cooling the fiber to lower than the second heat-treating temperature, and releasing the tension from the fiber to give a fiber having a reduced crimp contraction value. The invention also provides a bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) having a reduced crimp contraction value of about 6% to 15%.
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申请公布号 |
US6974628(B2) |
申请公布日期 |
2005.12.13 |
申请号 |
US20040006253 |
申请日期 |
2004.12.07 |
申请人 |
INVISTA NORTH AMERICA S.A R.L. |
发明人 |
VAN TRUMP JAMES E.;COVELLI CARMEN A.;GOSSLER JAMIE LEE;MARFELL DAVID J.;MAPP CLIVE |
分类号 |
D02J1/12;D02J1/22;(IPC1-7):D01F8/00 |
主分类号 |
D02J1/12 |
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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