发明名称 METHOD FOR PRODUCING ACRYLIC FIBER BUNDLE
摘要 PROBLEM TO BE SOLVED: To provide a method for producing an acrylic fiber bundle by which occurrence of single fiber breakage, entangling, etc., of an extruded yarn is suppressed in a dry-jet wet spinning method and the yarn running speed can be thereby improved to stably produce a high-quality product of the resultant fiber bundle. SOLUTION: The method for producing the acrylic fiber bundle is carried out as follows. Dry-jet wet spinning for once extruding a spinning solution from a spinneret 1 into air, admitting the solution downward into a coagulation bath 3, turning back the resultant yarn with a direction changing guide 5 and taking out the yarn from the coagulation bath is performed to afford the acrylic fiber bundle. In the process, a partition plate is installed at a distance from the yarn within the range of 20-200 mm between the yarn during the passage of downward running in the coagulation bath, turning back with the direction changing guide and then running and the tank wall of the coagulation bath tank. Furthermore, the method for producing the acrylic fiber bundle comprises installing the partition plate 4 so as to surround the yarn at a distance kept within the range of 20-200 mm from the extruded yarn or installing the partition plate so as to nip the yarn. COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2007291594(A) 申请公布日期 2007.11.08
申请号 JP20070076068 申请日期 2007.03.23
申请人 TORAY IND INC 发明人 TOKUDA MASASHI;TAKATANI KOHEI;OGAWA FUMIO
分类号 D01F6/18;D01D5/06 主分类号 D01F6/18
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