| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-treating method by which the productivity by heat treatment can be improved while preventing the generation of a gas from a yarn discharged to the exterior of a heat-treating apparatus. SOLUTION: The heat-treating method for a carbon fiber precursor includes regulating the temperature of the yarn F at the yarn outlet 7' of the heat-treating apparatus 1 so as to be≤200°C while regulating the speed of the yarn F traveling in the heat-treating apparatus 1 within the range of≥9 m/min and≤20 m/min. COPYRIGHT: (C)2008,JPO&INPIT
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