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US5853881: Elastic laminates with improved hysteresis

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Filing Information

Inventor(s) Paul Windsor Estey · William Bela Haffner · Jon Edward Tinsley · Susan Elaine Shawver · Stephen Clark Smith ·
Assignee(s) Kimberly-Clark Worldwide, Inc. ·
Attorney/Agent(s) James B. Robinson ·
Primary Examiner Jeffrey Stucker ·
Application Number US8728712
Filing date 10/11/1996
Issue date 12/29/1998
Predicted expiration date 10/11/2016
U.S. Classifications 428/373  · 428/903  ·
International Classifications D02G 300  ·
Kind CodeA
International Classifications 442328;329;346;382;400;361-366 ·
20 Claims, No Drawings


Abstract

A composite elastic material is provided having improved hysteresis comprising a layer of an elastic material bonded to a layer of nonelastic material at least one side. The elastic material layer is made from a blend of a narrow polydispersity number polymer and a conventional elastomer, and the blend is essentially free of low molecular weight polyethylene processing aids. The composite elastic material laminate should have a hysteresis at least 15 percent better than a similar laminate made without the narrow polydispersity number elastomer but with the processing aid.

Independent Claims | See all claims (20)

  1. 1. A composite elastic material laminate having improved hysteresis comprising a layer of an elastic material bonded to a layer of nonelastic material on at least one side, wherein said elastic material layer comprises a blend of a narrow polydispersity number polymer and a conventional elastomer and wherein said blend is essentially free of low molecular weight polyethylene processing aids.
  2. 15. A laminate comprising a layer of nonelastic material bonded while necked to an elastic material layer, said elastic material layer comprising a blend of from about 62 to about 80 weight percent of a conventional elastomer and from about 10 to about 30 weight percent of a narrow polydispersity number polyolefin elastomer, wherein said blend is essentially free of low molecular weight polyethylene processing aids, and wherein said laminate has a hysteresis at least 15 percent better than a similar laminate made without said narrow polydispersity number polyolefin elastomer but with said processing aid.
  3. 19. A neck bonded laminate comprising a layer of nonelastic microfiber web material bonded while necked to an elastic film layer, said film comprising a blend of from about 62 to about 80 weight percent of a conventional elastomer and from about 10 to about 30 weight percent of a narrow polydispersity number polyolefin elastomer and wherein said blend is essentially free of low molecular weight polyethylene processing aids.

References Cited

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Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP0707106KIMBERLY-CLARK WORLDWIDE, INC.Apr 1996
EP0712892KRATON Polymers Research B.V.May 1996
DE2513251BAYER AGSep 1976
WO199003464Apr 1990
WO199720091Jun 1997

Referenced By

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