Variable denier filaments and method of producing same

Details Variable denier filaments and method of producing same Variable denier filaments and method of producing same

1988-06-06

1990-03-06

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

2642103, 428364, 428395, 428400, D03D 300

Patent

active

049065190

ABSTRACT:
This invention pertains to variable denier filaments prepared from synthetic polymers having a glass transition temperature of at least 30.degree. C. and yarns made therefrom. The filaments have longer length slubs, which results in their use in fabrics desiring a variable texture and dyeing effects. The filaments are prepared by drawing at ambient temperature a feeder yarn having sufficient molecular orientation at carefully controlled draw ratios and in draw zones having a specified length.

REFERENCES:
patent: 3478143 (1969-11-01), Werner et al.
patent: 4044089 (1977-08-01), Cochran et al.
patent: 4147749 (1979-04-01), Lipscomb et al.
patent: 4495244 (1985-01-01), Phillips
H. M. Behery and B. K. Porcher, "Effect of Crystallinity and Orientation on Oscillation During Drawing of Polyethylene Terephthalate", published in Journal of Engineering for Industry, Mar. 1982, pp. 175-181.

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