Process for the preparation of fibers from polymeric materials

Details Process for the preparation of fibers from polymeric materials Process for the preparation of fibers from polymeric materials

1979-03-19

1986-07-15

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By impinging plural liquid masses

264 12, 264 13, 264 14, 264 85, 264211, 162 21, 162 22, D21B 136

Patent

active

046005455

ABSTRACT:
Polyolefin fibers, which are suited for at least partially substituting the cellulose fibers in the manufacture of paper, are produced by a process which consists in preparing in a pressure vessel a solution of a polyolefin at a temperature higher than the boiling temperature of the solvent under normal conditions, and under autogenous pressure or a pressure greater than the autogenous pressure, in ejecting said solution under the above stated conditions into a zone of lower pressure, in allowing the ejected solution to expand at least partially in said zone, and in then hitting the at least partially expanded solution with a jet of a high-speed fluid, which is at a temperature lower than that of the solution, and has an angled direction with respect to the direction of ejection of the solution.

REFERENCES:
patent: 2988469 (1961-06-01), Watson
patent: 3885014 (1975-05-01), Fukada
patent: 4189455 (1980-02-01), Raganato et al.

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