Variable-aperture process for the manufacture of filaments from

Details Variable-aperture process for the manufacture of filaments from Variable-aperture process for the manufacture of filaments from

1985-07-11

1987-10-27

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264178F, 264179, 4253822, D01D 506

Patent

active

047028769

ABSTRACT:
Fibers are air-gap spun from a polymeric spinning mass comprising an aromatic polyamide (such as poly-p-phenyleneterephthalamide) by extrusion through a spinneret, passing through an air-gap, passage through a liquid (such as water), and exiting the liquid via an aperture which is variable in size. The use of such an aperture allows easier use of the equipment (especially the stringing up operation) and better fibre properties (such as tensile strength).

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