Invention Grant
- Patent Title: Process of making wholly aromatic polyamide filament
- Patent Title (中): 制造全芳香族聚酰胺丝的工艺
-
Application No.: US12792225Application Date: 2010-06-02
-
Publication No.: US08834755B2Publication Date: 2014-09-16
- Inventor: In-Sik Han , Jae-Young Lee , Seung-Hwan Lee , Jae-Young Kim , So-Yeon Kwon
- Applicant: In-Sik Han , Jae-Young Lee , Seung-Hwan Lee , Jae-Young Kim , So-Yeon Kwon
- Applicant Address: KR Kwacheon-Si
- Assignee: Kolon Industries, Inc.
- Current Assignee: Kolon Industries, Inc.
- Current Assignee Address: KR Kwacheon-Si
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2005-0060502 20050706
- Main IPC: D01F13/04
- IPC: D01F13/04 ; D01D5/06 ; D01F6/60

Abstract:
Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized by comprising multi-stage injection of a coagulant with sulfuric acid concentration lowered sequentially stage by stage, to a spun material fed into a coagulant injection tank. The present invention enables increase of a spinning and take-up velocity without occurrence of thread cutting by uniformly and evenly coagulating surface and inside of the spun material. In addition, the present invention recovers the coagulant or water already used and reuses the recovered coagulant or water in the earlier stages, so that it has advantages of saving production costs and reducing environmental contamination. Accordingly, the wholly aromatic polyamide filament produced according to the present invention has high crystallinity X, large apparent crystal size ACS and reduced defects in the crystal itself, thereby exhibiting more improved physical properties such as strength and modulus.
Public/Granted literature
- US20100301516A1 AROMATIC POLYAMIDE FILAMENT AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2010-12-02
Information query