Bi-component friction disc for yarn texturing
AssigneeIntech Corporation
InventorsJohn W. Glaze, Jr., Billy Mac Graves
Life of this patent
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Abstract
A bi-component friction disc for imparting false twist to yarn to texture the yarn comprising an inner surface having a first portion of ceramic material surrounded by a second portion of polyurethane or rubber. Typically, one of these discs is installed on each end of a hollow tube, and two sets of tubes and discs are used in order to allow the yarn being textured to make four passes over the discs to impart the false twist.
Claims7
A rotatable friction disc for imparting twist to a yarn comprising an annular flared friction surface symmetrically disposed about an axis of rotation and terminating at one end in a minor radius defining an opening and at the other end in a major radius, said friction surface defining in cross-section a substantially smooth curve and having a first surface portion extending from said minor radius to a point intermediate said radii and a second surface portion extending from said intermediate radius to said major radius, said first surface portion being of a ceramic-like material having a relatively low coefficient of friction with said yarn and said second surface portion being of a rubber-like material having a relatively high coefficient of friction with said yarn.
Dependencies are inferred from the claim text.