抄録
The deformation of crepe yarn in water has been analyzed by examining the forces developed in wet crepe yarns and their effects on its behavior.
Part 9 of this article induces theoretical expressions for untwisting moment from contraction force developed in constituent fibers and their radial distance from the yarn axis. By following these theoretical equations on untwisting moment, analyses have been made of the untwisting moment of viscose rayon, silk, acetate, nylon and terylene crepe yarns. The factors which have definite influence on untwisting moment have also been examined. In particular, the swelling property of the constituent fibers has been found to play an important part in increasing the untwisting moment of crepe yarns.
