Burlington Industries, Inc.

Robert C Malpass

Delano M Conklin

Walter F Illman

John H Hansen

Clifton H Karnes, Jr

Norbert W Burske

Quick setting, nonaqueous melt size compositions suitable for application as a melt to textile yarns, and for later removal by solvent or aqueous means, include substantially equal amounts of an 80/20 ethylene/acrylic acid copolymer and a wax such as hydrogenated tallow intimately blended with a smaller amount of sebacic acid or dodecanedioic acid together with an amount of a nonionic surfactant to facilitate size removal.

Melt size compositions containing surfactants

A hot-melt warp yarn size composition and a method for applying, desizing, and disposing of it which essentially eliminates atmospheric and water pollution at all stages of the process. The size is a melt blend of ethylene/vinyl acetate copolymer with microcrystalline, paraffin, or hydrogenated tallow wax. It is applied as a melt to warp yarn, desized with hot petroleum solvent, and the extracted size and unrecovered solvent burned to non-polluting carbon dioxide and water.

Hot-melt size compositions and process for textiles

A non-aqueous, water-soluble, quick-setting sizing composition suitable for application in the molten state to textile yarns of both continuous-filament and staple types, and for later removal by aqueous means, comprising a combination of a film-forming thermoplastic polymer with a melt-miscible viscosity reducer and solidification promoter, and yarns so sized. The polymer protects and consolidates the yarn, while its companion component promotes the even application and particularly the quick set-up of the molten size. Optionally, if desired, water-soluble lubricants may also be added to increase the lubricity and flexibility of the sized yarn.

Hot melt size, yarn sized therewith, and packages and fabrics of sized

A compact apparatus and method for applying hot-melt size in a properly fluid state to a plurality of textile yarns. The apparatus comprises an internally heated rotating cylinder made of heat-conducting material, with deep grooves formed around it, one groove for each yarn strand. The size is preferably applied by urging a block of solid size against the grooves of the hot cylinder. From the point of application the molten size is carried by the rotation of the cylinder to a zone where each moving yarn strand passes briefly through a corresponding size-filled groove, essentially tangentially to the cylinder, and then moves away coated with an optimum amount of size. The method of application is unique in its capacity for placing a quick-setting, high molecular weight, film-forming melt size on yarn at high speed.

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High Point, NC, United States of America

Robert C Malpass