Production of hollow nylon fibers

Details Production of hollow nylon fibers Production of hollow nylon fibers

1987-12-23

1989-09-19

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

21050038, 2642091, 264211, 26421116, 264558, 264561, 264562, B01D 3916, D01D 506

Patent

active

048679348

ABSTRACT:
A microporous nylon hollow fiber is prepared by extruding a nylon spinning solution through an annular slit of an orifice into a quench liquid while simultaneously introducing a core liquid into the inside hollow portion of the extruded spinning solution where the weighted densities of the spinning solution, quench liquid and the core liquid are regulated such that the average of the density of the core liquid and the spinning solution is about equal to the density of the quench liquid.

REFERENCES:
patent: 3876738 (1975-04-01), Marinaccio et al.
patent: 4127625 (1978-11-01), Arisaka et al.
patent: 4284594 (1981-08-01), Joh et al.
patent: 4322381 (1982-03-01), Joh
patent: 4323627 (1982-04-01), Joh
patent: 4340479 (1982-07-01), Pall
patent: 4340480 (1982-07-01), Pall
patent: 4454085 (1984-06-01), Schindler et al.
patent: 4722795 (1988-02-01), Gohl et al.

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