Process for producing substantially all-polyester yarns from fine denier feed fibers on an open end spinning machine
AssigneeWaverly Mills, Inc.
InventorTony F. Caviness
Life of this patent
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Abstract
A method for producing substantially 100% polyester yarns on an open end spinning machine is described. The process involves acting on substantially 100% polyester sliver made of high tenacity, fine denier fibers with a negative tooth combing roll to individualize the fibers and feed them to the rotor of an open end spinning machine. Superior quality industrial gauge yarns can be produced from fine denier, high tenacity polyester fibers according to this method at a high rate of throughput and with few ends down.
Claims4
An open end spun yarn having an Ne count as measured on the indirect system of about 12 or coarser consisting essentially of polyester fibers about 1.3 denier per filament or less in size and having a single fiber tenacity of about 5 grams per denier or greater.
A straight open end spun industrial gauge yarn comprising substantially all high tenacity polyester fibers having a denier of about 1.3 or less, a tenacity of at least about 5 grams per denier, and a staple length of at least about 11/4 inches.
Dependencies are inferred from the claim text.