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US 8,007,699 B2Granted
Process of making bicomponent fiber
AssigneeFina Technology, Inc.
InventorsJohn Bieser, Guillaume Pavy, Hughes Haubruge, Alain Sandaert, William R. Wheat
Life of this patent
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Abstract
Bicomponent fibers, methods of forming bicomponent fibers and articles formed from bicomponent fibers are described herein. The bicomponent fibers generally include a sheath component and a core component, wherein the sheath component consists essentially of a first metallocene polypropylene and the core component consists essentially of a second metallocene polypropylene.
Claims6
A process of forming a bicomponent fiber comprising:
- providing a first metallocene polypropylene comprising a first melting temperature and a second metallocene polypropylene comprising a second melting temperature;
- melting the first and second metallocene polypropylenes at their respective first and second melting temperatures, thereby providing a first and second melted metallocene polypropylene;
- and
- forming the first and second melted metallocene polypropylenes into a bicomponent fiber comprising a sheath component formed from the first metallocene polypropylene and a core component formed from the second metallocene polypropylene, wherein the first melting temperature is at least about 10° C. lower than the second melting temperature.
1 more element
Dependencies are inferred from the claim text.