Monsanto Company

Frank Stutz

Jing-peir Yu

James E Bromley

Stanley E McKinney

Wayne T Mowe

Chester C Wu

A melt-spinning process for producing self-crimping, nylon 66 carpet yarn at spinning speeds of, for example 4000 meters per minute is provided. The process utilizes polymer having a relative viscosity (RV) of at least 50 and containing a sufficient amount of a chain branching agent to prevent broken filaments and to provide yarn having good luster.

Self crimpable nylon 66 carpet yarn

Improved feed yarns for air-jet texturing are provided by using high molecular weight polyamide polymer spun through non-round capillaries at high spinning speeds to give filament modification ratios greater than 1.5.

Polyamide feed yarn for air-jet texturing

Spun yarn having torqueless latent crimp is draw-textured, producing a drawn textured yarn which is substantially torque-free.

Process for low-torque textured yarn

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.

Growing community of inventors

Pensacola, FL, United States of America

Frank Stutz