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Composite elastic material having multistage elongation characteristics and method of manufacturing the same

  • US 6,069,097 A
  • Filed: 09/16/1997
  • Issued: 05/30/2000
  • Est. Priority Date: 01/12/1995
  • Status: Expired due to Term
First Claim
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1. A composite elastic material having a multiple-stage elongation property comprising:

  • a non-woven fabric which is stretchable along at least one direction and has a break-down elasticity along said direction of about 100% or more; and

    a sheet-like elastic member having an elastic recovery of about 60% or more and a break-down elasticity of about 200% or more;

    said non-woven fabric and said elastic member being secured together at a plurality of points to form a composite elastic material having a first stress lowering point caused by changes of structure of said non-woven fabric while being stretched along said direction, and a second stress lowering point occurring at an elongation larger than that of said first stress lowering point caused by a break-down of said sheet-like elastic member.

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