Multicomponent textile fibers, methods for their production, and products made using them
AssigneePascale Industries, Inc.
InventorsWillorage Rathna Perera, Gerald J. Mauretti
Life of this patent
Estimating the term…
Abstract
A fiber is produced comprising polymers of differing types which are not admixed during production. The differing polymer types are heated to the point of softening in a vertically-oriented crucible and a fiber comprising the polymers in positions corresponding to their positions in the crucible is drawn from an orifice at the lower end of the crucible.
Claims15
A method of production of a polymer fiber wherein a plurality of differing polymer types are provided as precursor materials and are not admixed during fiber production, whereby the properties of the differing polymer types are preserved in the final fiber, comprising the steps of:
- providing a vertically-oriented crucible having a plurality of separate compartments for receiving the differing polymer types, each of the compartments communicating at a lower end thereof with an orifice in the lower end of the crucible;
- disposing the differing polymer types in the corresponding compartments;
- heating the crucible to a desired temperature at which each of the differing polymer types are softened to a desired degree;
- codrawing a fiber comprising each of the polymer types, being disposed with respect to one another corresponding to the positions of the respective compartments in the crucible, from the orifice;
- and
- reeling the codrawn fiber onto a takeup reel.
A method of production of a polymer fiber wherein a plurality of differing polymer types are provided as precursor materials and are not admixed during fiber production, whereby the properties of the differing polymer types are preserved in the final fiber, comprising the steps of:
- providing a bundle of generally cylindrical preforms, each comprising one of the differing polymer types;
- disposing the bundle of preforms in a vertically-oriented crucible having an orifice at its lower end;
- heating the crucible to a desired temperature at which each of the differing polymer types are softened to a desired degree;
- codrawing a fiber comprising each of the polymer types, being disposed with respect to one another corresponding to the positions of the respective preforms in the bundle, from the orifice;
- and
- reeling the codrawn fiber onto a takeup reel.
Dependencies are inferred from the claim text.