Continuous hollow filament, yarns, and tows

Details Continuous hollow filament, yarns, and tows Continuous hollow filament, yarns, and tows

1992-11-09

1994-10-18

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

28254, 28271, 57287, 57288, 57289, 57310, 57350, 57908, 264130, 26417714, 2642093, 2642095, 2642356, 2642888, 2642905, 264346, D01D 524, D01D 5253, D02J 108, D02J 122

Patent

active

053565827

ABSTRACT:
Hollow polyester undrawn filaments having excellent mechanical quality and uniformity are prepared by a simplified post-coalescence melt spinning process at speeds of e.g. 2-5 km/min by selection of polymer and spinning conditions whereby the void content of the undrawn filaments can be essentially maintained or even increased when drawn cold or hot, with or without post heat-treatment.

REFERENCES:
patent: 5223198 (1993-06-01), Frankfort et al.
patent: 5250245 (1993-10-01), Collins et al.

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