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Elastic laminate including nonwoven layer formed from highly-oriented-component fibers and disposable garment employing the same

  • US 6,878,647 B1
  • Filed: 09/28/1999
  • Issued: 04/12/2005
  • Est. Priority Date: 10/02/1998
  • Status: Expired due to Fees
First Claim
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1. An elastic laminate elastically extensible in at least one direction, comprising:

  • (a) an elastomeric layer having a first surface and a second surface opposing the first surface;

    wherein the elastomeric layer is in a form selected from the group consisting of a scrim, an apertures formed film, an elastomeric woven or nonwoven, discrete strands and strings;

    wherein the elastomeric woven or nonwoven and discrete strand and strings comprise a polystyrene thermoplastic elastomer selected from the group consisting of a styrene-butadiene-styrene thermoplastic elastomer, a styrene-isoprene-styrene thermoplastic elastomer, a styrene-ethylene/butylene-styrene thermoplastic elastomer, a styrene-ethylene/propylene-styrene thermoplastic elastomer, a styrene-ethylene/propylene thermoplastic elastomer, a hydrogenated styrene butadiene rubber, and a mixture thereof; and

    (b) a first nonwoven layer joined to the first surface of the elastomeric layer, the first nonwoven layer being formed from component fibers having a primary fiber direction;

    wherein the first nonwoven layer has a Fiber Orientation Ratio within about ±

    20 degrees from a primary fiber direction of at least about 65%;

    wherein the elastic laminate exhibits elasticity without mechanical stretching of the first nonwoven layer during manufacture.

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