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US 4,063,888 AGranted
Process for preparing space-dyed yarn
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorsRichard A. O'Connell, Robert E. Foster
Life of this patent
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Abstract
Yarn is space-dyed by a process wherein the yarn is wound around a receptacle, e.g., a perforated package dyeing tube. A dyebath is allowed to flow through the yarn. The flow of dye is partially restricted or channeled in such a manner that the yarn becomes intermittently dyed.
Claims2
A method of space-dyeing yarn, which comprises -
- a. winding the yarn on a perforated package dyeing tube, said tube having some of its perforations blocked prior to winding the yarn thereon,
- b. blocking an area on the outer surface of the so-wound yarn corresponding to the area blocked on the perforated tube, and
- c. providing a flow of dye through the so-wound yarn from the outside of the yarn to the inside and from the inside of the perforated tube to the outside of the yarn, the conditions of dyeing being adjusted to achieve a rapid dye strike, the contact time between the dyebath and the yarn being shorter than in normal dyeing.
Dependencies are inferred from the claim text.