Air gap spinning process for aramids

Details Air gap spinning process for aramids Air gap spinning process for aramids

1993-10-01

1995-02-28

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264203, 26421116, D01D 506, D01F 660

Patent

active

053934776

ABSTRACT:
An improved process for spinning aramids from solution using the air gap wet spinning method involves using a coagulant that contains 1 to 1000 ppm by weight of an organic polymer that acts as a drag reducer. Improved productivity and/or finer aramid fibers is obtained with no deterioration of fiber physical properties.

REFERENCES:
patent: 3742104 (1973-06-01), Jamison et al.
patent: 3767756 (1973-10-01), Blades
patent: 3869429 (1975-03-01), Blades
patent: 4529763 (1985-07-01), Tamura et al.
Mark, H. F. et al. Encyclopedia of Polymer Science and Engineering, John Wiley & Sons (New York), vol. 6, pp. 246 and 248 (1986).
Hoyt, J. W. "Drag Reduction". Encyclopedia of Polymer Science and Engineering, vol. 5, 3rd Ed. (1986), pp. 129-151.
Abstract of Japan 51-118,323 (Published Sep. 29, 1976).

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