Process and apparatus for making uniform alternate ply-twisted y

Details Process and apparatus for making uniform alternate ply-twisted y Process and apparatus for making uniform alternate ply-twisted y

1995-06-02

1996-11-26

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Alternate twist

57204, 57294, D01H 500, D01H 746

Patent

active

055773761

ABSTRACT:
A process and apparatus for making alternate S and Z twist plied yarn from individual singles yarns includes the steps of tensioning the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction, snubbing the yarn to restrain ply twisting so the twist in the singles yarn can equalize itself, stopping the forward movement of the yarn, then bonding the ply-twisted yarns at a node while applying twist, stopping the twisting operation, then repeating the procedure while twisting in the opposite direction. The ply twisted yarn has a lower defect level of less than 2.5 defects per 100 inch length of yarn.

REFERENCES:
patent: 3468120 (1969-09-01), Hildebrand
patent: 4056925 (1977-11-01), Vogelsberg
patent: 4219998 (1980-09-01), Farnhill
patent: 4276740 (1981-07-01), Chambley et al.
patent: 4455818 (1984-06-01), Sugimoto et al.
patent: 4873821 (1989-10-01), Hallam et al.
patent: 5012636 (1991-05-01), Hallam et al.

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