Production of high crimp, high stenght, hollow rayon fibers

Details Production of high crimp, high stenght, hollow rayon fibers Production of high crimp, high stenght, hollow rayon fibers

D - Textiles, Paper

01

F

18/591

D01F 1/08 (2006.01) D01D 5/24 (2006.01)

Patent

CA 1090965

PRODUCTION OF HIGH CRIMP, HIGH STRENGTH HOLLOW RAYON FIBERS Abstract of the Disclosure High crimp, high strength, hollow rayon fibers or filaments which maintain their hollowness after being immersed in water and subsequently dried, and have a crimped configura- tion such that there is in excess of about 20 crimps per inch, preferably between about 25-30 crimps per inch, are provided by an in-line process whereby a viscose solution containing a blowing agent is extruded into an aqueous acid coagulating bath. The conditions of the process result in hollow fila- ments that are substantially irreversible since they remain hollow and do not collapse even after repeated washing and drying cycles. The hollow filaments possess high crimp, such as about 25-30 crimps per inch, which will permit ease in carding and blending with other fibers. The high crimp hollow fibers also possess high strength nearly equivalent to that of high wet modulus rayon fibers.

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