Stretchable fibers of polymers, spinnerets useful to form the fibers, and articles produced therefrom
AssigneeE. I. Du Pont de Nemours and Company
InventorsGarret D. Figuly, Anthony J. Soroka, Marc B. Goldfinger, Rakesh H. Mehta, H. Vaughn Samuelson, Gregory P. Weeks
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Abstract
A stretchable synthetic polymer fiber comprising an axial core formed from an elastomeric polymer, and two or more wings attached to the core and formed from a non-elastomeric polymer, wherein preferably at least one of the wings is mechanically locked with the axial core. The fibers can be used to form garments, such as hosiery. A spinneret pack for producing such fibers is also provided.
Claims13
A stretchable synthetic polymer fiber including an axial core comprising a thermoplastic elastomeric polymer and a plurality of wings attached to the core and comprising a thermoplastic, non-elastomeric polymer, wherein at least one of the wing polymer or core polymer protrudes into the other polymer.
A melt spinning process for spinning continuous polymeric fiber comprising:
- passing a melt comprising a non-elastomeric polymer and a melt comprising an elastomeric polymer through a spinneret to form a stretchable synthetic polymer fiber having a plurality of wings attached to a core, wherein at least one of the wing polymer or core polymer protrudes into the other polymer;
- quenching the fibers after they exit the spinneret to cool the fibers;
- and collecting the fibers.
Dependencies are inferred from the claim text.