Method of forming staple fibers from self-texturing filaments

Details Method of forming staple fibers from self-texturing filaments Method of forming staple fibers from self-texturing filaments

1994-11-04

1996-07-02

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

264168, 26417126, 26417128, 2642093, 2642105, 2642108, 26421115, 26421117, 264342RE, D01D 524, D01D 526, D02G 100

Patent

active

055319513

ABSTRACT:
A method of producing self-texturing filaments that exhibit a desirable tendency to coil rather than to bend sharply or zig zag. The method includes directing a quenching fluid at extruded hollow filaments of a liquid polymer predominantly from one side of the hollow filaments to thereby produce hollow filaments with different orientations on each side. Thereafter the temperature of the hollow filaments is raised to a temperature sufficient for the filaments to relax, but less than the temperature at which the filaments would shrink. When the relaxed filaments are cut into staple lengths, they tend to assume a form that provides a favorable degree of mechanical entanglement that is useful in forming resilient solid structures.

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