Method and apparatus for forming composite yarn

Details Method and apparatus for forming composite yarn Method and apparatus for forming composite yarn

1980-12-19

1982-12-07

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57 6, 57401, D01H 112, D02G 338, D01H 1135

Patent

active

043620086

ABSTRACT:
A composite yarn comprising a component of staple fibres and a component formed by a continuous strand is spun on a friction spinning apparatus. Staple fibres are fed to a twisting zone where the fibres are twisted to form a staple strand with one end open. The continuous strand is joined with the staple strand at a position within a portion of the staple strand which is in the process of being twisted, and such that fibres are joined with the staple strand both upstream and downstream of the joining position and some fibres join with the staple strand on both sides of the joining position. In this way a yarn is formed with some fibres forming an inner core twisted with the continuous strand, with some fibres forming on outer sheath around the core and continuous strand and some fibres having part of their length in the core and part in the sheath.

REFERENCES:
patent: 4107909 (1978-08-01), Fehrer et al.
patent: 4130983 (1978-12-01), Dammann et al.
patent: 4222222 (1980-09-01), Didek et al.
patent: 4241574 (1980-12-01), Turk et al.
patent: 4249368 (1981-02-01), Fehrer
patent: 4253297 (1981-03-01), Pacholski et al.

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