Method of high speed yarn texturing

Details Method of high speed yarn texturing Method of high speed yarn texturing

1977-11-18

1979-06-12

Rimrodt, Louis

Textiles: manufacturing

Thread finishing

Surface modification of running length

28256, 28265, 264290T, D02G 112

Patent

active

041576047

ABSTRACT:
Multifilament thermoplastic synthetic yarn is textured by an improved process involving propelling the yarn through an energy tube by superheated steam to strike, at an oblique angle, an unyielding barrier within a chamber in which the yarn then forms a plug on a moving perforate surface. The improvement comprises heat-setting the yarn, before the texturing operation, at constant length to the point that its density increases to at least 50% of the difference between that of undrawn amorphous yarn and the maximum normally attainable in such yarn; and feeding the resulting yarn hot into the energy tube whereby tendency toward shrinkage of the yarn resulting from undergoing crimping is reduced, and/or a higher texture level is obtainable at given temperature of the crimping operation.

REFERENCES:
patent: 2686339 (1954-08-01), Holt
patent: 3372446 (1968-03-01), Shichman et al.
patent: 3441989 (1969-05-01), Clarkson et al.
patent: 3946468 (1976-03-01), Satterwhite
patent: 4024610 (1977-05-01), Li et al.
patent: 4030169 (1977-06-01), Enneking et al.

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