Method and apparatus for heat-treating yarns and products...

Details Method and apparatus for heat-treating yarns and products... Method and apparatus for heat-treating yarns and products...

D - Textiles, Paper

02

J

D02J 13/00 (2006.01) D02G 1/12 (2006.01)

Patent

CA 2177566

This invention is directed to a method and apparatus for heat-treating multifilament yarn, wherein the yarn is fed into a chamber having imperforate and perforate sections, and to the resultant yarn products. Hot fluid is forced through a wad of the yarn in the imperforate section of the chamber and vented through the perforate section. The device may be used to bulk and heat-set yarns, depending upon the operating conditions. Yarn products prepared from this process are especially suitable for making carpets having good texture retention and carpet bulk.

L'invention se rapporte à un procédé et à un appareil de traitement thermique de fils à multiples filaments, ainsi qu'aux produits obtenus à partir de ce fil, ledit procédé consistant à introduire le fil dans une chambre présentant des sections perforées et non perforées, à injecter un liquide chaud au travers d'un peloton de fils dans la section non perforée de la chambre puis à évacuer ce fluide au travers de la section perforée. On peut utiliser ce dispositif pour gonfler et thermofixer des fils, ceci en fonction des conditions de fonctionnement de l'appareil. A partir de ce procédé, on prépare des produits spécialement conçus pour fabriquer des tapis qui conservent une bonne texture et présentent un certain gonflant.

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