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US RE35,108 EGranted
Method for spinning multiple colored yarn
AssigneeBASF SE
InventorsGerry A. Hagen, Dominick A. Burlone, Phillip E. Wilson
Life of this patent
Estimating the term…
Abstract
A spin pack for spinning multiple components includes a distribution device which distributes mutually separated molten polymer streams to a spinneret so that each mutually separated molten polymer stream is accessible at each active spinneret backhole. Intermediate the spinneret and the distribution device, a selection assembly selects which, if any, mutually separated molten polymer stream flows into which backhole.
Claims3
A process for spinning mixed filament yarn comprising:
- (a) feeding three or more differentially colored mutually separated molten polymer components to spin pack having a spinneret with extrusion orifices for issuing filaments, each extrusion orifice having a backhole for receiving molten polymer;
- (b) distributing each mutually separated component so that every component is accessible as a distinct component at every active spinneret backhole;
- (c) selectively preventing, via a plate having through holes, all but one component from entering a backhole;
- and
- (d) extruding [multiple component] mixed filament yarn.
2 more elements
Dependencies are inferred from the claim text.