Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Patent
1996-03-07
1997-12-16
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
28245, 28246, 2642105, 2642108, 26421112, 26421114, 26421117, 425 66, 425377, 4253782, 4253791, 4253822, 425464, D01D 516, D01D 1002, D02G 300
Patent
active
056981465
ABSTRACT:
A method and apparatus for spinning, drawing and winding a synthetic multi-filament yarn, wherein the yarn is subjected after drawing and prior to winding to a heat treatment for purposes of reducing its shrinkage tendency. In the heat treatment, the yarn advances along an elongated heating surface closely adjacent thereto but substantially in no contact therewith. The heating surface has a surface temperature which is above the melt point of the yarn. During the heat treatment, the yarn is subjected to a tension which is lower than the tension required for plastic deformation. The yarn wound by this method has a heat shrinkage tendency which is typically more than about 20%.
REFERENCES:
patent: 4123492 (1978-10-01), McNamara et al.
patent: 4902461 (1990-02-01), Schippers
patent: 5148666 (1992-09-01), Bauer et al.
patent: 5343601 (1994-09-01), Schippers
patent: 5552097 (1996-09-01), Schippers
Abstract of Japan 5-171,533 (Published Jul. 9, 1993).
Gross Rahim
Schippers Heinz
Barmag AG
Tentoni Leo B.
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