| 摘要 |
The beam from a laser is caused to traverse either continuously or periodically along the length of a filament, thread, yarn, ribbon, or the like, while the same is under tension. The arrangement is such as to develop a temperature gradient through the element in a transverse direction relative to its longitudinal axis, wherever the laser beam impinges, for developing differential relaxation of stresses therein and to impart a crimp thereto. |
