Sonoco Development Incorporated

Richard K Mims

Brian P Couchey

Ismael A Hernandez

Krishnaraju Varadarajan

Clifford A Bellum

Arnold B Floyd, Jr

Ismael A Hernández

Christoph Reicherz

David W Rhodes

Christoph Reichrez

Bellum A Clifford

A yarn carrier is provided in the form of a yarn winding tube having a yarn catch insert. The yarn winding tube is a hollow cylindrical tube having a longitudinal axis extending lengthwise between its first and second opposite ends. The tube has a hole through its surface for receiving a yarn catch insert. The yarn catch insert includes a first member and a second member, each having an inside surface. When positioned within the hole, the inside surfaces of the first and second members face each other and form a string-up groove therebetween. After a yarn winding and unwinding process, the yarn catch insert may be removed from the hole in the tube, the first and second member may be separated, and the string-up groove may be cleaned. The yarn catch insert may then be re-inserted into the hole and the tube may be reused for winding.

Yarn carrier

A tubular or ring-shaped core for winding pressure-sensitive tape has a paper board body and a release-coated outermost ply formed of a strip of polymer film having a release coating on its outer surface and a tacky adhesive layer on its inner surface. The strip is wound onto the core with one edge of the strip folded outwardly away from the core so as to expose the tacky adhesive layer on the folded edge. This folded edge is overlapped by the opposite edge of the strip, thereby placing the tacky adhesive layers on the two edges in contact with each other. A firm bond between the overlapping edges is achieved by the adhesive-to-adhesive contact. In a preferred embodiment, the overlapping edge of the strip overlaps slightly beyond the folded edge onto the unfolded outer surface of the strip. This unfolded portion is treated to promote adhesion of the overlapping edge thereto. Improved bonding of the polymer strip to the core, and improved conformance of the strip to irregularities in the core surface, are achieved in a preferred embodiment by heating the strip as it is being advanced to the core and applying tension to the heated strip to cause it to stretch as it is wound onto the core.

Winding cores for pressure-sensitive tape and methods of making same

A yarn support tube for supporting elastomeric yarns of the type having finish oil or emulsion applied to the yarn includes a tube core of paperboard, and an outer ply formed by spirally winding a laminated strip onto the tube core such that a butt joint is formed between edges of adjacent spiral turns of the strip. The laminated strip is formed of an inner paper layer and an outer layer of polypropylene film or the like which is substantially impervious to the finish emulsion. A sealing strip of polypropylene or the like, also substantially impervious to the finish emulsion, is spirally wound onto and adhered to the outer ply of the tube such that the strip spans and sealingly covers the butt joint. The sealing strip and polypropylene film layer cooperate to prevent finish emulsion from migrating into the tube core.

Elastomeric yarn support tube and method of making same

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Hartsville, SC, United States of America

Richard K Mims