Allied Corporation

Samuel L Yates

Charles J Cole

Rodney L Wells

Frank L Peckinpaugh

Robert Lees

Dong Wha Kim

Dick C Vermeer

Leonard J Aberle

John W Wagner

Michael K Westmoreland

Monty L Rowe

George R Muller

Albert H Wiesner

Ernest W Wohnig

Thomas A Flower

An improved high speed process for texturing continuous filament yarn is provided wherein the improvement comprises cooling the yarn, subsequent to texturing and prior to applying tension, by contact for at least 4 milliseconds with a curved surface at a temperature of -29.degree. to 2.degree. C. and an RMS of up to 10, frictional forces creating a yarn tension of 0.036 to 0.45 gram per denier per end at the surface. Apparatus is also provided for cooling the continuous filament yarn subsequent to texturing and prior to applying tension. The apparatus comprises a curved surface having a minimum length for yarn contact of 7.6 cm, an RMS of up to 10 and a temperature of -29.degree. to 2.degree. C. Textured yarn brought into contact with the surface for at least 4 milliseconds at a yarn tension of 0.036 to 0.045 gram per denier per end is cooled to increase yarn stability and prevent pullout of yarn texture.

Chilled yarn guide

A method and apparatus for removing fluid and cooling the wad of textured yarn on the barrier screen of a moving cavity texturing jet by deflecting the hot fluid (such as steam) away from the underside of the screen with rotating turbine blades and by drawing ambient air across the screen with a vacuum line under the screen has been discovered.

Yarn texturing by moving cavity jet with fluid removal

A dispersion is provided for incorporation with a synthetic fiber-forming polymer. The dispersion comprises a polymer additive, such as titanium dioxide, and a glyceride which is non-resin forming when exposed to certain temperatures and pressures for specified time periods and which has an average molecular weight of between about 600 and 2400.

Additive dispersions and process for their incorporation with

A two-stage hydrolysis process for polymerizing epsilon-caprolactam is disclosed comprising a first stage from a temperature of about 180.degree. C.-260.degree. C., a pressure of 20 to 150 psig, for a period of about 0.5 to 4 hours, then before equilibrium conditions are reached a second stage at a temperature of about 200.degree. C.-260.degree. C., a pressure of about 100-900 Torr for a period of about 2 to 15 hours, while continuously removing most of the water so that water is removed both during hydrolyzation and during the subsequent polycondensation, whereby the cyclic dimer content of the shaped polymer article is below 0.2 percent by weight.

Two-stage hydrolysis process for the preparation of nylon 6

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Lexington, SC, United States of America

Samuel L Yates