Composite yarn and process for producing the same
AssigneeMilliken & Company
InventorsWilliam M. Pascoe, Andre M. Goineau, Brenda W. Marcus
Life of this patent
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Abstract
A process for producing composite yarns comprises the steps of first wrapping a second yarn around the perimeter of and along the length of a first yarn and then heating the yarn intermediate produced by such wrapping to produce a composite yarn. When a heat-shrinkable yarn is used in producing such a composite yarn, the shrinkage of the heat-shrinkable yarn enables the production of composite yarns possessing aesthetic qualities similar to those exhibited by yarns produced by much more complicated processes, such as boucle and chenille yarns.
Claims20
A process for producing a composite yarn, the process comprising the steps of:
- (a) providing at least a first yarn and a second yarn, the first yarn having a length and a perimeter, and at least one of the first and second yarns being a heat-shrinkable yarn exhibiting a shrinkage upon exposure to heat of about 20% or more,
- (b) wrapping the second yarn around the perimeter of and along at least a portion of the length of the first yarn to produce a yarn intermediate,
- (c) overfeeding the yarn intermediate to a heating zone and exposing the yarn intermediate to heat sufficient to at least partially shrink the heat-shrinkable yarn and thereby produce a composite yarn, and
- (d) collecting the composite yarn such that substantially no tension is applied to the composite yarn.
A process for producing a composite yarn, the process comprising the steps of:
- (a) providing at least a first yarn and a second yarn, the first yarn having a length and a perimeter, and at least one of the first and second yarns being a heat-shrinkable yarn exhibiting a shrinkage upon exposure to heat of about 20% or more,
- (b) providing a rotary, hollow spindle assembly,
- (c) providing a heater assembly,
- (d) providing a yarn collection assembly,
- (e) passing the first and second yarns through the spindle assembly so that the second yarn is wrapped around the perimeter of and along at least a portion of the length of the first yarn, the wrapped first and second yarns forming a yarn intermediate,
- (f) overfeeding the yarn intermediate to the heater assembly and exposing the yarn intermediate to heat sufficient to at least partially shrink the heat-shrinkable yarn and thereby produce a composite yarn, and
- (g) collecting the composite yarn on the yarn collection assembly, the yarn composite being collected such that substantially no tension is applied to the composite yarn during collection.
Dependencies are inferred from the claim text.