发明名称 |
METHOD FOR PRODUCING PITCH-BASED CARBON FIBER SLIVER AND SPUN YARN |
摘要 |
A pitch-based carbon fiber sliver providing a high-strength carbon fiber spun yarn is efficiently produced by providing a pitch-based carbon fiber mat comprising a mass of piled-up pitch-based carbon fibers of which fiber extension directions are aligned preferentially in one direction; and directly subjecting the carbon fiber mat to drawing and carding by means of a carding machine while moving the mat in said one preferential alignment direction. The thus-obtained carbon fiber sliver is drawn and twisted to produce a pitch-based carbon fiber spun yarn containing at least 3 wt.% of fibers having a fiber length of at least 150 mm, a number of primary twist of 50 - 400 turns/m and a tensile strength of at least 0.10 N/tex. |
申请公布号 |
EP1696057(A1) |
申请公布日期 |
2006.08.30 |
申请号 |
EP20040807340 |
申请日期 |
2004.12.14 |
申请人 |
KUREHA CORPORATION |
发明人 |
KOBAYASHI, TATSUO;SONOBE, NAOHIRO |
分类号 |
D01G15/68;D02G3/02;D01F9/145 |
主分类号 |
D01G15/68 |
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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