US PATENT SUBCLASS 252 / 8.84
.~ For textile materials consisting wholly or in part of noncellulosic synthetic fibers (e.g., spin finish for nylon, polyester, acrylic, etc., fibers; lubricants for blends thereof with diverse fibers, etc.)

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

8.81  DF  TEXTILE PROCESSING AID COMPOSITIONS, OR PROCESSES OF PREPARING (E.G., LUBRICANTS OR ANTISTATIC AGENTS FOR FIBER, YARN, FABRIC, ETC.) {5}
8.84.~ For textile materials consisting wholly or in part of noncellulosic synthetic fibers (e.g., spin finish for nylon, polyester, acrylic, etc., fibers; lubricants for blends thereof with diverse fibers, etc.)

DEFINITION

Classification: 252/8.84

For textile materials consisting wholly or in part of noncellulosic synthetic fibers (e.g., spin finish for nylon, polyester, acrylic, etc., fibers; lubricants for blends thereof with diverse fibers, etc.):

(under subclass 8.81) Compositions wherein the textile material includes or consists of polymeric fibers which are synthesized from starting materials other than cellulose or its derivatives and are sometimes referred to as man-made fibers.

(1) Note. A spin finish, which is generally applied immediately after extrusion of the polymeric filament and

prior to drawing, comprises a combination of a lubricant/antistatic agent system. The finish facilitates subsequent processing of the filaments into yarn at very high speeds, involving the generation of electrostatic charges and friction, by preventing breakage of or damage to the filaments.

(2) Note. Included in this subclass are blends of two or more synthetic fibers and blends of a synthetic fiber with animal hair, silk, or cellulosic fiber.