Yarn re-structuring method and apparatus

Details Yarn re-structuring method and apparatus Yarn re-structuring method and apparatus

1991-06-25

1992-03-10

Hail, III, Joseph J.

Textiles: spinning, twisting, and twining

Apparatus and processes

False twist device

D01H 792

Patent

active

050940678

ABSTRACT:
This is disclosed a yarn re-structuring method and apparatus for modifying the structure of a spun yarn in order to improve its properties, in which the yarn is subjected to the action of successive false twisters in order to impart a permanent modification to the structure of the yarn, in which there is a tandem arrangement of first and second oppositely acting false twisters, with the first false twister acting to at least partially unwind the origianl twist in the yarn and the second false twister acting at least partly to restore or to increase the original twist in the yarn. This action on the spun yarn improves the properties of softness and bulkiness, while retaining acceptable performance of the yarn in other characteristics.

REFERENCES:
patent: 4458477 (1984-07-01), Raasch et al.
patent: 4565064 (1986-01-01), Iwasaki et al.
patent: 4642981 (1987-02-01), Shimano
patent: 4700538 (1987-10-01), Varga et al.
patent: 4803838 (1989-02-01), Varga et al.

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