Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Of varying cross-sectional area or with intermittent...
Patent
1980-07-09
1983-12-06
Petrakes, John
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Of varying cross-sectional area or with intermittent...
57208, 57245, 57248, 57905, 264168, 264171, 264176F, 264177F, 428373, 428374, 428399, D01D 300, D01D 522
Patent
active
044193130
ABSTRACT:
Two molten streams of polyester polymer are extruded at different speeds to intersect below the spinneret. The spinning speed is relatively high, and the resulting filament has shrinkage peaks and valleys along its length. When a number of such filaments are relaxed in a yarn bundle, the yarn spontaneously develops crimp.
REFERENCES:
patent: 3387327 (1968-06-01), Privott, Jr. et al.
patent: 3497585 (1970-02-01), Chapman et al.
patent: 3700545 (1972-10-01), Matsui et al.
patent: 3744529 (1973-07-01), Jorda et al.
patent: 3852948 (1974-12-01), Ruddell et al.
Bromley James E.
Dees John R.
Familant Harold M.
Mowe Wayne T.
Walker Darwyn E.
Bodenheimer, Jr. Stephen M.
Fiber Industries Inc.
Petrakes John
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