Fusible bicomponent spandex
AssigneeInvista North America S.A.R.L.
InventorsSteven W. Smith, Hong Liu, Willem Bakker, Gregory P. Weeks, Juan Cera
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Abstract
Included are multiple component elastic fibers prepared by a solution-spinning process such as dry spinning or wet spinner of spandex fibers including polyurethaneurea and polyurethane compositions. These fibers have a cross-section including at least two separate regions with definable boundaries wherein at least one region defined by the boundaries of the cross-section includes a polyurethaneurea or polyurethane composition. One region of the fiber includes a fusibility improvement additive to enhance adhesion to itself or to a substrate.
Claims12
An article comprising a garment comprising a circular knit;
- wherein said knit comprises a fusible, elastic, solution-spun bicomponent fiber;
- wherein said bicomponent fiber includes two or more regions of different compositions that are continuous along the fiber length;
- wherein a first region of the two or more regions comprises at least one elastomeric polyurethane, a polyurethaneurea composition or mixtures thereof;
- wherein a second region of the two or more regions comprises:
- at least one elastomeric polyurethane, a polyurethaneurea composition or mixtures thereof, and
- at least one fusibility improvement additive;
- and
- wherein said bicomponent fiber is present in every course, in alternate courses or combinations thereof.
Dependencies are inferred from the claim text.