Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

John B Shoemaker

H Wayne Dick

Robert B Rau

A method of forming a wound fiber package comprises winding a first portion of strand having at least one fiber on a bobbin using a first indexing ratio A:B, wherein A is greater than 0 and A is greater than B, and winding a second portion of strand having at least one fiber on the bobbin using a second indexing ratio A:B different from the first indexing ratio, wherein A and B are greater than 0. In one non-limiting embodiment of the invention, B equals 0 in the first indexing ratio, A in the first indexing ratio equals A in the second indexing ratio, and A equals B in the second indexing ratio. In another non-limiting embodiment of the invention, B is greater than 0 in the first indexing ratio, A in the first indexing ratio equals A in the second indexing ratio, and A equals B in the second indexing ratio. This method may be used to produce a wound package.

Filling wind for bobbin twisting

Yarn bobbin

A textile bobbin is disclosed having double flanges and a strand collection zone between the flanges. The barrel of the bobbin is internally reinforced with longitudinal ribs, the upper flange is completely enclosed and the barrel and flanges are sized to provide an optimum wind angle and increased yarn capacity for high twist yarns beyond those customary in the glass fiber yarn field.

Textile bobbin

A textile bobbin for winding glass fiber strand is shown which contains a mottled surface over part or all of its surface and has a slightly raised, generally equally spaced ribs on its surface between the bobbin flange and the top. In one embodiment, the bobbin is mottled on its surface between the ribs and axial grooves are provided on the surface from the upper rib to the bobbin top.

Growing community of inventors

Lexington, NC, United States of America

John B Shoemaker