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US 4,025,595 AGranted
Process for preparing mixed filament yarns
AssigneeE. I. Du Pont de Nemours and Company
InventorMichael E. Mirhej
Life of this patent
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Abstract
Continuous, mixed filament yarns are provided as well as a process for preparing them in which at least two different continuous filament yarns are cospun and separately entangled; the entangled yarns are consolidated and drawn to yield from 0.5-6 entanglements/meter in the consolidated yarn after drawing, and the drawn yarn is intermingled to yield a product yarn having a degree of filament intermingling of 45-80%, a denier of 70-260 and 20-68 filaments.
Claims12
A process for preparing continuous, mixed filament yarns having 20-68 filaments and a denier of 70-260
- which comprises cospinning at least two different bundles of continuous filaments, separately entangling each bundle, consolidating the entangled bundles and drawing them together to yield from about 0.5-6 entanglements/meter after drawing, and then intermingling the drawn yarn to a degree of filament intermingling of about 45- 80%.
Dependencies are inferred from the claim text.