Method for producing random yarn denier variations on draw warpi

Details Method for producing random yarn denier variations on draw warpi Method for producing random yarn denier variations on draw warpi

1991-12-04

1994-08-02

Crowder, Clifford D.

Textiles: manufacturing

Warp preparing or handling

With drawing or stretching

28243, D02J 106

Patent

active

053333640

ABSTRACT:
The present invention discloses a method of draw warping a plurality of partially oriented synthetic continuous filaments traveling in parallel side by side relation to produce denier variations randomly along the length of each filament and randomly from filament to filament. This is accomplished by transporting the filaments collectively through a draw zone defined between first and second filament engaging members and by imposing a common lengthwise stretching force simultaneously to the filaments with the draw zone while heating the filaments and, finally, by causing the filaments to slip randomly and draw non-uniformly on at least one of the filament engaging members.

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"Contempory Textile Engineering" F. Happey, Academic Press, 1982 pp. 20-23.
"The Karl Mayer Draw-Beam System," Fiber World, pp. 67-68.
"Mayer Warp Drawing Machine Developed Further," Man-Made Year Book (CTI), pp. 104-105.
Dipl.-Ing. G. Becker, Dipl.`Ing. W. Wiesel; "Effect of Machine Downtimes in Draw-Warping on Yarn Properties," Manmade Fiber Year Book (CTI).

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