E.i. Dupont De Nemours and Company

Thomas D Williamson

John S Dickins, Iii

A string-up system and apparatus, using a novel dual-slotted traverse guide, with preferential string up of a first yarn in the one slot, associated with transfer means to move a yarn, if desired, out of the first slot, so this yarn is strung up in the second slot.

Yarn winding apparatus and process

Utilization of finish and recovery of materials for control of pollution are improved in a tow crimping process wherein an advancing tow of fibers which have been processed in an aqueous bath or series of aqueous baths is uniformly compressed in a confined space under a nip pressure of 600-1,000 lbs./in. to exude solvent-containing water from the tow, the exudate being returned to the last aqueous bath, a predetermined amount of finish is applied to the tow, the fibers are crimped in a stuffing box crimper whereby some of the finish and a small amount of residual moisture are exuded from the tow, the exudate is recovered and removed to a storage container, the exudate is re-applied to the tow at a rate corresponding to the rate of exudation and the crimped tow is collected and then dried.

Wet tow crimping process

A tow crimping apparatus that includes a pair of advancing rolls associated with a crimping chamber is provided with a movable roll to permit controlled loading of the nip between the rolls. The controlled loading is accomplished through a pressure chamber linked to the movable roll and having a restricter in the pressure supply line to the pressure chamber.

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Lugoff, SC, United States of America

Thomas D Williamson