Du Pont of Canada Limited

Michael J Wolstencroft

An improved process is disclosed for preparing a warp beam wound with tapes slit from at least two webs of superimposed flexible film at least 1 m wide, comprising feeding the slit superimposed tapes through nip rolls, separating the tapes at the nip and winding the tapes onto a warp beam.

Preparation of a warp beam wound with flexible tapes

An improved rotatable twist tube device is disclosed for false twist texturing a continuous filament thermoplastic yarn being passed through the twist tube. The twist tube comprises a hollow shaft rotor constituted as the rotor of an electric motor. Two bell housings, one attached to each end of the motor body, house ball bearings which support the hollow shaft rotor near each of its ends. A friction bushing is positioned in each end of the hollow shaft rotor. The friction bushings each have a rounded front friction surface and have a back surface extending outwards from the hollow shaft rotor. The improvement comprises an annular extension of each bell housing which projects beyond the end of the hollow shaft rotor and encompass a portion of the adjacent bushing. The annular extension of each bell housing is adapted to prevent yarn wraps on the outside of the hollow shaft rotor by deflecting such wraps onto the surface of the friction bushing.

Growing community of inventors

Kingston, Canada

Michael J Wolstencroft