| 摘要 |
PROBLEM TO BE SOLVED: To enable physical property of yarn to be widely controlled.SOLUTION: When a relaxing heat treatment is performed, yarn feed speeds of second godet rollers 22a, 22b and 22c are controlled so that a speed of the roller positioned on more downstream side in a yarn traveling direction becomes slower and temperatures of the second godet rollers 22a, 22b and 22c are controlled so that a temperature of the heating roller 22c on the most downstream side in the yarn traveling direction becomes temperatures of the other heating rollers 22a and 22b or higher. When a tense heat treatment is performed, yarn feed speeds of the second godet rollers 22a, 22b and 22c are controlled so that a speed of the roller positioned on more downstream side in the yarn traveling direction becomes faster and temperatures of the second godet rollers 22a, 22b and 22c are controlled so that a temperature of the heating roller 22a on the most upstream side in the yarn traveling direction becomes temperatures of the other heating rollers 22b and 22c or higher.SELECTED DRAWING: Figure 1 |
