| 发明名称 |
Melt spinning process of aromatic polyester |
| 摘要 |
An aromatic polyester showing anisotropy in the molten state is melt spun stably for a long period of time by controlling an extrusion pressure at a nozzle portion to 3 kg/cm2G or higher and an atmospheric temperature TN at a nozzle outlet to a degree satisfying the following formula: (TF-100)</=TN</=TF, wherein TF is a flowing temperature of the aromatic polyester, and preferably controlling the pressure of a polymer melt at a tip outlet of an extruder to 15 kg/cm2G or higher, whereby a highly orientated fiber of fine denier is obtained.
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| 申请公布号 |
US4743416(A) |
申请公布日期 |
1988.05.10 |
| 申请号 |
US19850804823 |
申请日期 |
1985.12.05 |
| 申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED;JAPAN EXLAN COMPANY, LTD. |
发明人 |
SUGIMOTO, HIROAKI;KOBASHI, TOSHIYUKI;TAKAO, SEIJI |
| 分类号 |
D01D5/08;D01F6/62;(IPC1-7):D01D5/08 |
主分类号 |
D01D5/08 |
| 代理机构 |
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