False twist yarn crimping apparatus

Details False twist yarn crimping apparatus False twist yarn crimping apparatus

1990-06-29

1994-08-23

Stodola, Daniel P.

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

D02G 102, D02J 1300

Patent

active

053396170

ABSTRACT:
An elongate and arcuately curved yarn heating plate of the type adapted for use in a false twist yarn crimping machine which utilizes a specific relationship between the curvature of the heating plate and the heat imparted to the yarn so as to permit the length of the heating plate to be shortened as compared to conventional lengths. More particularly, the present invention involves the shortening of the radius of curvature of the heating plate from known and accepted values, which has been found to permit the length of the heating plate to be shortened while still providing adequate heat transfer to the yarn.

REFERENCES:
patent: Re30159 (1979-11-01), Kubler
patent: 3800374 (1974-04-01), Ozawa
patent: 3969800 (1976-04-01), Baldini et al.
patent: 4115985 (1978-09-01), Venot
patent: 4236323 (1980-12-01), Dammann et al.
patent: 4242862 (1981-01-01), Negishi
patent: 4567721 (1986-02-01), Kuroda et al.
patent: 4809494 (1989-03-01), Dammann
T. Egambaram et al, "Heat Transfer in False-Twist Texturing", Textile Research Journal, Oct. 1974 pp. 803-812.

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