Fluid-jet false-twisting method and product

Details Fluid-jet false-twisting method and product Fluid-jet false-twisting method and product

D - Textiles, Paper

02

G

D02G 1/02 (2006.01) D02G 1/16 (2006.01) D02G 3/22 (2006.01) D02G 3/28 (2006.01) D02G 3/34 (2006.01)

Patent

CA 2246801

A process of producing an assembled yarn, including the steps of providing two or more yarns moving downstream from a supply to a take-up, inserting alternating-direction zones of twist into at least one of the yarns, the at least one yarn having an area of zero twist between said alternating direction zones of twist, combining the at least two yarns to form a single, integrated yarn strand, and intermittently exposing the yarn strand to an air blast to create a zone of intermingled yarns at spaced-apart points along the length of the yarn strand to prevent torsional movement of one yarn relative to the other yarn. According to one preferred embodiment of the invention, the step of exposing the yarn strand to an air blast includes the step of intermingling the yarns at the areas of zero twist.

Cette invention concerne un procédé de fabrication de fils assemblés consistant à amener deux ou plusieurs fils simples d'un point d'alimentation jusqu'à un dispositif d'assemblage, à créer dans au moins un des fils des plages de torsion de sens inverse séparées par des plages de torsion nulle, à réunir les fils pour en former un seul, et à exposer ce dernier à un jet d'air intermittent pour obtenir une structure enchevêtrée sur certaines plages du fil destinée à empêcher la torsion des fils constitutifs. Dans une variante privilégiée, l'étape consistant à exposer le fil à un jet d'air coïncide avec celle de l'enchevêtrement des fils constitutifs dans les plages de torsion nulle.

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