Fiber Industries, Inc.

Monsanto Company

Celanese Gmbh

Wayne T Mowe

John R Dees

Lawrence E Blackmon

James E Bromley

Jing-peir Yu

Darrell A Kelly

Darwyn E Walker

Michael M McNamara

Harold M Familant

Frank Stutz

Polyester polymer is extruded through converging capillaries at different speeds to merge and form a combined stream. The stream is cooled to form a filament, which is withdrawn at a high speed. A plurality of such filaments are combined into yarn which self-crimps upon heating. In some embodiments, the yarn has a variable denier.

Self-crimping yarn

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.

Self crimping yarn and process

A yarn having variable denier filaments with thick and thin regions is drawn at a draw ratio selected to break filaments in the thin regions. This may be done while false-twist texturing. The resulting broken ends protrude from the yarn, giving a spun-like yarn.

Process for making spun-like yarn with variable denier filaments

A textured continuous filament yarn combining a luxuriant, soft hand with improved moisture wicking for greater comfort in garments. Some filaments have a denier which varies at least 25% (preferably 300-500%), and other filaments have a spiral cross-section.

Spun-like yarn

A yarn for producing fabrics with a wool-like hand, by combining textured filaments with longer filaments preferably of larger average denier. The longer filaments thus protrude in loops from the yarn bundle.

Continuous filament yarn with wool-like hand

A yarn for producing fabrics with a wool-like hand, by combining textured filaments with longer filaments preferably of larger average denier. The longer filaments thus protrude in loops from the yarn bundle, and have helical cross-sections.

Method for producing polyester wool-like yarn

Process for continuous filament yarn with wool-like hand

A yarn for producing fabrics with a wool-like hand, by combining textured filaments with longer filaments preferably of larger average denier. The longer filaments thus protrude in loops from the yarn bundle, and have spiral cross-sections.

Wool-like yarn with moisture transport

Nylon 66 yarn having particular stress-strain properties, typically also having a soft, luxuriant hand in fabric form. As compared to conventional nylon 66 with comparable boiling water shrinkage, the novel yarn exhibits a higher modulus at break, a lower modulus at 10% elongation, a positive stress index, and excellent denier uniformity. The process involves subjecting the yarn, within 0.016 to 0.11 seconds after solidification of the filaments, to a tension of 0.2 and 1.5 grams per final denier and heating the yarn to a temperature between 50.degree. and 250.degree. C. long enough to reduce yarn retraction below 1%.

Process for nylon 66 yarn having a soft hand

Polyester yarn is spun at a sufficiently high speed to produce substantial stress-induced crystallinity and low shrinkage. The resulting feed yarn is textured, yielding a textured yarn which dyes considerably deeper than conventional polyester yarns.

Deep-dyeing polyester spinning process

Polyamide yarn is melt spun at high speed and drawn almost immediately (between 0.002 and 0.25 seconds) after solidification. Turbine driven feed roll replaces conventional feed and separator roll. Process displays unusually low drawing tension, exceptionally uniform yarn.

Growing community of inventors

Pensacola, FL, United States of America

Wayne T Mowe