Splittable multicomponent polyester fibers
First Claim
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1. A splittable multicomponent fiber comprising:
- at least one polymer component comprising a poly(lactic acid) polymer; and
at least one polymer component comprising an aromatic polyester polymer, wherein said multicomponent fiber is dissociable by mechanical means.
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Abstract
Mechanically divisible multicomponent fibers are disclosed having at least a first component comprised of poly(lactic acid) polymer and at least a second component comprised of an aromatic polyester. The multicomponent fibers are particularly useful in the manufacture of nonwoven structures, and in particular nonwoven structures used as synthetic suede.
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Citations
48 Claims
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1. A splittable multicomponent fiber comprising:
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at least one polymer component comprising a poly(lactic acid) polymer; and
at least one polymer component comprising an aromatic polyester polymer, wherein said multicomponent fiber is dissociable by mechanical means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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- 13. A fiber bundle comprising a plurality of aliphatic polyester microfilaments and aromatic polyester microfilaments, said microfilaments originating from a common multicomponent fiber.
- 23. A microfilament comprising poly(lactic acid), said microfilament having an average size ranging from about 0.05 to about 1.5 denier and a tenacity ranging from about 1.0 to about 5.5 gpd tenacity.
- 26. A fabric comprising a plurality of splittable multicomponent fibers comprising at least one polymer component comprising a poly(lactic acid) polymer and at least one polymer component comprising an aromatic polyester polymer, wherein said multicomponent fibers are dissociable by mechanical means.
- 27. A fabric comprising a plurality of poly(lactic acid) microfilaments and aromatic polyester microfilaments.
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37. A method for producing uniformly dyeable microfilament fibers, said method comprising:
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extruding a plurality of multicomponent fibers comprising at least one polymer component comprising a poly(lactic acid) polymer and at least one polymer component comprising an aromatic polyester polymer; and
mechanically separating said multicomponent fibers to form a fiber bundle comprising a plurality of poly(lactic acid) microfilaments and aromatic polyester microfilaments. - View Dependent Claims (38, 39)
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40. A method for producing fabric, said method comprising:
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extruding a plurality of multicomponent fibers comprising at least one polymer component comprising a poly(lactic acid) polymer and at least one polymer component comprising an aromatic polyester polymer;
forming a fabric from said multicomponent fibers; and
mechanically separating said multicomponent fibers to form a plurality of poly(lactic acid) microfilaments and aromatic polyester microfilaments, said separating step occurring prior to, during, or after said fabric forming step. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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Specification