Multi-component polymeric strands including a butene polymer and nonwoven fabric and articles made therewith
First Claim
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1. A multi-component polymeric spunbond strand including first and second polymeric components and having a cross-section, a length, and a peripheral surface wherein:
- the first and second polymeric components are arranged in substantially distinct zones across the cross-section of the strand and extend continuously along the length of the strand;
the first polymeric component is a portion of the peripheral surface of the strand continuously along the length of the strand and comprises a blend of a butene polymer and a first polyolefin other than a butene polymer having up to about 10 weight percent of ethylene in polymeric form said butene polymer comprising butene in an amount from about 90 to about 100% by weight of the butene polymer;
the second polymeric component comprises a second polyolefin having ethylene in an amount less than 10 weight percent.
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Abstract
Multicomponent polymeric strands including a polymer blend of a butene polymer, a polyolefin other than butene, and up to 10% by weight of ethylene in polymeric form. The blend is in one side or the sheath of the multi-component strands. Fabric made with such strands is also disclosed and has enhanced softness properties. Composite materials including the foregoing fabric bonded to both sides of an inner meltblown layer and garments and other articles made with the fabric are also disclosed.
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Citations
28 Claims
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1. A multi-component polymeric spunbond strand including first and second polymeric components and having a cross-section, a length, and a peripheral surface wherein:
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the first and second polymeric components are arranged in substantially distinct zones across the cross-section of the strand and extend continuously along the length of the strand; the first polymeric component is a portion of the peripheral surface of the strand continuously along the length of the strand and comprises a blend of a butene polymer and a first polyolefin other than a butene polymer having up to about 10 weight percent of ethylene in polymeric form said butene polymer comprising butene in an amount from about 90 to about 100% by weight of the butene polymer; the second polymeric component comprises a second polyolefin having ethylene in an amount less than 10 weight percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification