Process for the production of uniform POY filaments

Details Process for the production of uniform POY filaments Process for the production of uniform POY filaments

1988-12-09

1990-07-10

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Anti-stick or adhesion preventing coating

2642108, 2642905, 2642907, D01D 512

Patent

active

049405594

ABSTRACT:
Melt spinning method for the production of pre-oriented low-crystalline synthetic filaments which are distinguished by a high degree of uniformity and by the ability of being worked at high speeds in a friction-draw texturing process, according to which method the damping ratio of the spinning filament between the point of solidification and the winding unit, defined as the ratio of the fluctuation range of the filament tension at the beginning and at the end of the above-defined filament path is <0.10, and a driven roller with a freely rotating additional small roller in multiple wrap-around contact is utilized as the draw-off roller system.

REFERENCES:
patent: 3772872 (1973-11-01), Piazza et al.
patent: 4049763 (1977-09-01), Mineo et al.
patent: 4446299 (1984-05-01), Koschinek et al.
patent: 4517149 (1985-05-01), Oka et al.

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