High-shrinkage acrylic fibers and the process for their producti

Details High-shrinkage acrylic fibers and the process for their producti High-shrinkage acrylic fibers and the process for their producti

1979-06-01

1981-03-17

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With crimping or crinkling of strands of filaments

264182, 2642103, 2642107, 2642108, D01D 522

Patent

active

042566843

ABSTRACT:
Acrylic yarns and fibers having a high shrinkage power, ranging up to 50%, obtained by wet spinning, a stretching of 1.3 to 3 .times. in air, washing, a stretching of 1 to 2.5 .times. into boiling water, drying, steaming at 105.degree.-150.degree. C., over-stretching of 1.2 to 2 .times. at 90.degree.-100.degree. C.

REFERENCES:
patent: 3097054 (1963-07-01), Roustson et al.
patent: 3097055 (1963-07-01), Roustson et al.
patent: 3404204 (1968-10-01), Nakagawa et al.
patent: 3523150 (1970-08-01), Vignault
patent: 3558761 (1971-01-01), Tabara et al.
patent: 3963790 (1976-06-01), Couchon
patent: 4067948 (1978-01-01), Reinher et al.

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