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Web materials exhibiting elastic-like behavior

  • US 5,968,029 A
  • Filed: 01/14/1998
  • Issued: 10/19/1999
  • Est. Priority Date: 08/03/1993
  • Status: Expired due to Term
First Claim
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1. A macroscopically three-dimensional formed substrate comprising:

  • (a) a first boundary zone having a first surface pathlength and a second boundary zone having a second surface pathlength, said first and said second surface pathlengths measured when said formed substrate is in a relaxed condition; and

    (b) an elongated zone located at least partially between said first boundary zone and said second boundary zone, said elongated zone comprising incrementally stretched regions which result in said elongated zone being elongated in a first direction of elongation, said elongated zone having a third surface pathlength measured generally parallel to said first direction of elongation when said formed substrate is in said relaxed condition, said third surface pathlength being greater than either said first pathlength or said second pathlength such that said substrate takes on a macroscopic three-dimensional configuration when said substrate is in said relaxed condition.

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