Textiles: spinning – twisting – and twining – Strand structure – Multifilament yarns
Patent
1987-09-21
1989-02-07
Petrakes, John
Textiles: spinning, twisting, and twining
Strand structure
Multifilament yarns
57208, 57249, 57350, D02G 318, D02G 322, D02G 324, D02J 102
Patent
active
048023310
ABSTRACT:
A glass fiber bulk strand roving that is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another to form a composite entangled structure. The roving of the present invention is made by a process that uses a finger wheel to form axially extending loops in strands and a spinner downstream of the finger wheel. The looped strands from the finger wheel pass through a relatively unrestricted passage in the spinner which imparts a twist to such a looped strands, and then through a relatively restricted outlet orifice that is downstream of the outlet of the spinner. A back-up or puddling of the looped strands occurs in the spinner near the outlet thereof, due to the axial length of the loops in the strands and the restriction in the outlet of the spinner in the form of the outlet orifice, and this back-up or puddling of the looped strands in the spinner, in conjunction with the spinning thereof, results in the formation of the cross-axial loops in the axial loops of the strands.
REFERENCES:
patent: 2719350 (1955-10-01), Slayter et al.
patent: 2719352 (1955-10-01), Slayter et al.
patent: 2795926 (1957-06-01), Drummond
patent: 3118213 (1964-01-01), Benson
patent: 3324641 (1967-06-01), Benson et al.
Glaser Hellmut I.
Klink Jerome P.
Champion Ronald E.
Meehan Thomas A.
Owen-Corning Fiberglas Corporation
Pacella Patrick P.
Petrakes John
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