On-line fiber heat treatment

Details On-line fiber heat treatment On-line fiber heat treatment

1989-03-20

1991-04-23

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

264234, 2642108, 264345, D01F 660, D01D 1002

Patent

active

050098306

ABSTRACT:
A process for simultaneously drying and heat treating wet spun fibers of greater than 20 percent water based on weight of dry fiber material supplied continuously in multiple wraps around a pair of rolls in a heated zone, at a tension of 0.2 to 6 grams per denier at the beginning of the zone, with gas jets extending around each of the rolls for about 45 to 180 to direct turbulent gas at a temperature of 200 to 660 C against the fibers under tension in the zone until the residual moisture in the fibers is from 0.5 to 10 percent water based on weight of dry fiber material.

REFERENCES:
patent: 3503231 (1970-03-01), Fleissner et al.
patent: 3869430 (1975-03-01), Blades
patent: 3969429 (1975-03-01), Blades
patent: 4374978 (1983-02-01), Fujiwara et al.
patent: 4419317 (1983-12-01), Fujiwara et al.
patent: 4440710 (1984-04-01), Fujiwara et al.
patent: 4883634 (1989-11-01), Chern et al.

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