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US5883028: Breathable elastic film/nonwoven laminate

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Filing Information

Inventor(s) Michael Tod Morman · Linda Jeanette Morgan · Bernard Cohen ·
Assignee(s) Kimberly-Clark Worldwide, Inc. ·
Attorney/Agent(s) Speckman Pauley Petersen & Fejer ·
Primary Examiner James J. Bell ·
Application Number US8867507
Filing date 05/30/1997
Issue date 03/16/1999
Predicted expiration date 05/30/2017
U.S. Classifications 442/394  · 156/229  ·
International Classifications B32B 2712  ·
Kind CodeA
International Classifications 442394;399;400;401;382 ·
45 Claims, No Drawings


Abstract

A breathable elastic laminate is formed by bonding a film including an elastic water vapor-soluble polymer to a neckable nonwoven web such that when the film is relaxed, the web is in a necked state. The breathable laminate is stretchable in a direction parallel to the narrowing or necking of the web. The laminate possesses excellent water vapor permeability but acts as a barrier to the passage of odor-causing chemicals including ammonia.

Independent Claims | See all claims (45)

  1. 1. A breathable elastic laminate, comprisinga breathable elastic film; anda neckable nonwoven web bonded to the film while the nonwoven web is necked and the film is in an unstretched state;the laminate having an MVTR of at least about 300 grams/m.sup.2 -24 hrs.
  2. 19. A breathable elastic laminate, comprising:a water vapor-permeable elastic film comprising a polymer selected from the group consisting of silicone polymers, polyurethanes, polyether esters, polyether amides and combinations thereof; anda neckable spunbond web bonded to the film so that the spunbond web is necked when the film is unstretched;the laminate having an MVTR of at least about 1200 grams/m.sup.2 -24 hrs.
  3. 34. A breathable elastic laminate, comprising:a breathable elastic film having first and second sides;a meltblown nonwoven layer bonded to the first side of the film; anda spunbond nonwoven layer bonded to the second side of the film so that the spunbond web is necked when the film is unstretched.
  4. 40. A breathable elastic laminate, comprising:a breathable elastic film; anda neckable nonwoven laminate bonded to the film so that the nonwoven laminate is necked when the film is unstretched;the laminate having an MVTR of at least about 300 grams/m.sup.2 -24 hours.
  5. 44. A breathable elastic laminate, comprising:a breathable elastic film; anda neckable nonwoven web bonded to the film;the nonwoven web being necked in a first direction when the film is in an unstretched state;the film and web being bonded together while the film is stretched in a second direction nonparallel to the first direction.

References Cited

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Foreign Patent Documents

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EP0589222KIMBERLY-CLARK CORPORATIONMar 1994
EP0674035KIMBERLY-CLARK CORPORATIONSep 1995
JP8126663May 1996
WO199618499Jun 1996

Referenced By

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