Bicomponent polymer fibers made by rotary process
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorsMichael T. Pellegrin, Patrick M. Gavin, Patrick L. Ault, James E. Loftus, Randall M. Haines, Virgil Morris
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Abstract
In a method for making bicomponent polymer fibers, first and second molten polymers are supplied to a rotating spinner having an orificed peripheral wall. The molten polymers are centrifuged through the orifices as molten bicomponent polymer streams. The streams are cooled to make bicomponent polymer fibers.
Claims20
A method for making multicomponent fibers of thermoplastic material comprising:
- supplying at least first and second molten thermoplastic materials to a rotating spinner having an orificed peripheral wall;
- centrifuging the molten thermoplastic materials through the orifices as molten multicomponent streams of thermoplastic material;
- and
- cooling the streams to make multicomponent fibers of thermoplastic material.
A method for making bicomponent fibers of thermoplastic material comprising:
- supplying first and second molten thermoplastic materials to a rotating spinner having an orificed peripheral wall, where the melting point of the first thermoplastic material is different from the melting point of the second thermoplastic material by an mount greater than about 10.degree. C.;
- centrifuging the molten thermoplastic materials through the orifices as molten bicomponent streams of thermoplastic material;
- and
- cooling the streams to make bicomponent fibers of thermoplastic material.
A method for making bicomponent fibers of thermoplastic material comprising:
- supplying first and second molten thermoplastic materials to a rotating spinner having an orificed peripheral wall, where,
- the first thermoplastic material is a material selected from the group consisting of poly(phenylene sulfide), poly(ethylene terephthalate), poly(butylene terephthalate), polycarbonate, polyamide, polyethylene, polypropylene, polystyrene, asphalt, and mixtures thereof, and
- the second thermoplastic material is a different material selected from the group consisting of poly(phenylene sulfide), poly(ethylene terephthalate), poly(butylene terephthalate), polycarbonate, polyamide, polyethylene, polypropylene, polystyrene, asphalt, and mixtures thereof;
- centrifuging the molten thermoplastic materials through the orifices as molten bicomponent streams of thermoplastic material;
- and
- cooling the streams to make bicomponent fibers of thermoplastic material.
Dependencies are inferred from the claim text.