Process and apparatus for measuring false twist in thermoplastic

Details Process and apparatus for measuring false twist in thermoplastic Process and apparatus for measuring false twist in thermoplastic

1975-02-21

1977-09-27

Queisser, Richard C.

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 34R, 57157TS, D01H 1332

Patent

active

040502252

ABSTRACT:
A yarn of thermoplastic synthetic fibers is false twisted and during the false-twisting operation the number of false twists being imparted to the yarn is estimated with high accuracy. The estimation of the number of false twists is carried out by measuring, in a section within the twisting zone of the false-twisting apparatus, the speed of the yarn being processed under a normal operational condition and by the estimated number of false twists the yarn is advantageously quality controlled.

REFERENCES:
patent: 3303419 (1967-02-01), Gith
patent: 3405556 (1968-10-01), Gonsalves et al.
patent: 3510632 (1970-05-01), Standberg
patent: 3550400 (1970-12-01), Peat et al.
patent: 3613347 (1971-10-01), Carruthers
patent: 3667292 (1972-06-01), Hada
patent: 3705487 (1972-12-01), Carruthers
Egambaram et al., "Heat Transfer in False Twist Texturing"; Textile Research Journal; Oct. 1974; (p. 807).

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