| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus in which process passableness is good and high-quality acrylic fibers with little fluff are stably produced. SOLUTION: The steam drawing apparatus is designed to run a yarn and draw the yarn with steam. The steam drawing apparatus is characterized in that the steam drawing apparatus is composed of a hollow member in which both ends of a yarn path are sealed and pressurized steam is sealed therein and a twist-removing bar located just before the hollow member in the running direction of the yarn and arranged so as to contact the yarn. The method for producing a precursor yarn for carbon fibers comprises using the steam drawing apparatus. COPYRIGHT: (C)2009,JPO&INPIT |
