Melt-spinning a plurality of acrylonitrile polymer fibers

Details Melt-spinning a plurality of acrylonitrile polymer fibers Melt-spinning a plurality of acrylonitrile polymer fibers

1979-10-23

1981-11-17

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642107, D01F 700

Patent

active

043011071

ABSTRACT:
A process for preparing an acrylonitrile polymer fiber is disclosed wherein melt-spun acrylonitrile polymer filaments are maintained in a stretchable state as spun, stretched in at least two stages while maintained in such stretchable stage, the first stage being at a stretch ratio of up to about 5 and the subsequent stretch being at a stretch ratio greater than that of said first to provide a total stretch ratio of at least about 25.

REFERENCES:
patent: 4163770 (1979-08-01), Povoroff
patent: 4205039 (1980-05-01), Streetman et al.
patent: 4219523 (1980-08-01), Prosoff
patent: 4220616 (1980-09-01), Pfeiffer et al.
patent: 4220617 (1980-09-01), Pfeiffer et al.

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