发明名称 |
LYOCELL MULTI-FILAMENT FOR TIRE CORD AND METHOD OF PRODUCINGTHE SAME |
摘要 |
Disclosed is a lyocell multi-filament for a tire cord and a method of producing the same. The method includes i) dissolving mixed powder of cellulose and polyvinyl alcohol in a mixed solvent of N-methyl morpholine N-oxide and water to prepare a dope, ii) extruding the dope using a spinning nozzle including orifices through air gaps into a conical upper coagulation bath to solidify the dope to produce a multi-filament, iii) feeding the multi-filament through a lower coagulation bath to a washing bath, and washing the multi-filament, and iv) drying and oiling the washed multi-filament and winding the resulting multi-filament. At this time, the orifices each have a diameter (D) of 100 to 300 .mu.m, a length (L) of 200 to 2400 .mu.m, and a ratio of the length to the diameter (L/D) of 2 to 8, and are spaced apart from each other at intervals of 2.0 to 5.0 mm. The method provides a lyocell multi-filament having excellent physical properties useful as a tire cord, thereby producing a tire for an automobile having improved driving stability, dimensional stability, and uniformity using the tire cord. |
申请公布号 |
CA2438445(A1) |
申请公布日期 |
2004.06.26 |
申请号 |
CA20032438445 |
申请日期 |
2003.08.28 |
申请人 |
HYOSUNG CORPORATION |
发明人 |
KIM, MYUNG-WOO;KIM, SUNG-RYONG;HAN, SEOK-JONG;CHOI, JAE-SHIK;WANG, YONG-SOO;KWON, IK-HYON;LEE, TAE-JUNG;CHOI, SOO-MYUNG;KIM, CHEOL |
分类号 |
B29C47/00;B60C9/00;C08L1/02;C08L29/04;D01F1/02;D01F2/00;D02G3/46;D02G3/48;(IPC1-7):D01D5/06;D01D10/06;B29D30/38;D01F8/10 |
主分类号 |
B29C47/00 |
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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