Method and apparatus for making composite yarn

Details Method and apparatus for making composite yarn Method and apparatus for making composite yarn

1989-06-26

1990-12-18

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Alternate twist

57204, 57350, D02G 326, D02G 328, D01H 792

Patent

active

049777394

ABSTRACT:
A composite yarn comprising at least two yarn bundles plied together in alternating S and Z composite directions of twist separated by composite nodes of zero twist. At least one of the yarn bundles is a multi-strand bundle comprising at least two yarn strands. The strands of the bundles are twisted and the strands of the multi-strand bundle are plied together in alternating S and Z bundle directions of twist separated by bundle nodes of zero twist. The composite nodes and the bundle nodes coincide and the composite direction of twist is opposite to said bundle direction of twist between nodes. A method of plying filaments to obtain the composite yarn and apparatus for doing so are also disclosed.

REFERENCES:
patent: 3434275 (1969-03-01), Backer et al.
patent: 3468120 (1969-09-01), Hildebrand
patent: 3775955 (1973-12-01), Shah
patent: 4055040 (1977-10-01), Lin
patent: 4074511 (1978-02-01), Chambley et al.
patent: 4170103 (1979-10-01), Norris et al.
patent: 4206589 (1980-06-01), Markey et al.
patent: 4246750 (1981-01-01), Norris et al.
patent: 4276740 (1981-07-01), Chambley et al.

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