发明授权
- 专利标题: Process for producing a precursor fiber bundle and a carbon fiber bundle
- 专利标题(中): 制备前体纤维束和碳纤维束的方法
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申请号: US09883544申请日: 2001-06-18
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公开(公告)号: US06635199B2公开(公告)日: 2003-10-21
- 发明人: Shuichi Yamanaka , Masakatsu Shinto , Haruki Morikawa , Toshiyuki Miyoshi , Keizo Ono , Makoto Endo , Jun Yamazaki
- 申请人: Shuichi Yamanaka , Masakatsu Shinto , Haruki Morikawa , Toshiyuki Miyoshi , Keizo Ono , Makoto Endo , Jun Yamazaki
- 优先权: JP8-289062 19961014
- 主分类号: D01D516
- IPC分类号: D01D516
摘要:
A separable tow of elongated polymeric filaments comprises a plurality of distinct sub-tows lightly and individually and separably joined, as by light crimping together along their edges or, if uncrimped, joined by presence of moisture, and capable of being packed into a container and later removed and separated. The filaments are preferably acrylic and have a total fineness of about 300,00-1,500,000 denier and the sub-tows each of which has a total fineness of about 50,000-250,000 denier, with a filament fineness of about 1-2 denier, and each sub-tow has a degree of entanglement of about 10-40 m−1 as measured by the hook drop test. The separable tow is made of a plurality of sub-tows, after separately drawing the sub-tows and subsequently removably joining the sub-tows into a single tow.