Fiber texturing method

Details Fiber texturing method Fiber texturing method

D - Textiles, Paper

02

J

28/49

D02J 13/00 (2006.01)

Patent

CA 1080457

Abstract In order to texture fibers such as filaments or yarns, a beam of electromagnetic energy, preferably that from a laser source, is directed upon a fiber as it moves past the zone of the directed beam. The frequency of the beam is adjusted so that its wavelength falls within an absorption band of the fiber. As a result, that side of the fiber upon which the beam impinges will be readily heated and, at the same time, provide a shading effect for the non-irradiated side of the fiber to establish an internal differential thermal gradient across the fiber. This differential internal thermal gradient imparts a texturing twist to the fibers. A focusing lens may be inserted between the laser source and the fiber so that the area of the beam approximates that of the area of the side of the fiber irradiated by the beam. Also, during the texturing process, the fibers may be elongated to enhance the effect of the differential thermal gradient.

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