Continuous filament yarn

Details Continuous filament yarn Continuous filament yarn

D - Textiles, Paper

02

G

28/43

D02G 1/12 (2006.01) D02G 3/22 (2006.01)

Patent

CA 1068090

Abstract of the Disclosure A crimped yarn product comprises a textured continuous filament yarn produced by feeding the yarn at a controlled rate and under controlled tension by a pair of feed rolls into a confined crimping zone against a mass of crimped yarn therein, causing the yarn to collapse longitudinally to form crimps which become part of such mass. Heat and pressure are applied to the yarn mass in the crimping zone to plastically deform the yarn and partially set the crimps. The crimped yarn mass is then fed at a controlled rate by means of toothed rolls from the crimping zone into a setting zone and the yarn mass is transported through the setting zone. Heat and pressure are applied to the yarn mass in the setting zone to fully set the crimps. The pressure applied to the yarn mass in the setting zone is substantially suf- ficient only to keep the crimps closed during the final setting thereof. The yarn mass is cooled in the cooling zone to a temperature below that at which the yarn undergoes any molecular structural alteration in the absence of the application of a substantial force thereto. Finally, the yarn is withdrawn at a controlled rate from the cooling zone in continuous filament form.

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