Allied Corporation

Allied Chemical Corporation

Russell H Butler

Hsin L Li

Hendrikus J Oswald

Alfred L Liland

Michael L Briggs

Edward V Limoncelli

Michael J Litwinowich

The present invention discloses a moving multicavity texturing method for simultaneously texturing filaments which are commingled to form a yarn. The yarn readily knits producing a fabric which upon subsequent dyeing and shrinking produces a variable textured fabric similar in appearance to fabrics knit from natural fibers.

Method for producing commingled continuous variable texture yarn

The invention provides a filter apparatus and method for removing inclusions from a molten metal alloy and includes a container having an inlet portion and an outlet portion. A filter bed is located within said container, interposed between said container inlet and said container outlet, and is comprised of a plurality of filter zones arranged in progressive layers. Each of the filter zones contains particles of filter material within a preselected size range, and the filter zones are successively arranged to selectively locate the largest filter particles at the container outlet and the smallest filter particles at the container inlet. Molten metal alloy is filtered by passing it through the filter bed.

Filtration of inclusions from molten metal alloy

The present invention discloses a moving multicavity texturing apparatus for simultaneously texturing filaments which are commingled to form a yarn. The yarn readily knits producing a fabric which upon subsequent dyeing and shrinking produces a variable textured fabric similar in appearance to fabrics knit from natural fibers.

Apparatus and method for producing commingled continuous variable

A method is described for monitoring and controlling the texture level of a yarn produced in a moving cavity texturing apparatus. The texture level of the yarn is controlled by monitoring fluid pressure in the cavity. The pressure is used as a feedback signal for control of the texture level of the yarn.

Method for controlling texture level in a moving cavity texturing process

Multifilament thermoplastic synthetic yarn is textured by an improved process involving propelling the yarn through an energy tube by superheated steam to strike, at an oblique angle, an unyielding barrier within a chamber in which the yarn then forms a plug on a moving perforate surface. The improvement comprises heat-setting the yarn, before the texturing operation, at constant length to the point that its density increases to at least 50% of the difference between that of undrawn amorphous yarn and the maximum normally attainable in such yarn; and feeding the resulting yarn hot into the energy tube whereby tendency toward shrinkage of the yarn resulting from undergoing crimping is reduced, and/or a higher texture level is obtainable at given temperature of the crimping operation.

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Rockaway, NJ, United States of America

Russell H Butler