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US6623837: Biaxially extendible material

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Filing Information

Inventor(s) Michael Tod Morman · Lon M. Edelman · Reginald Smith ·
Assignee(s) Kimberly-Clark Worldwide, Inc. ·
Attorney/Agent(s) Pauley Petersen Kinne & Erickson ·
Primary Examiner William P. Watkins, III ·
Application Number US9749141
Filing date 12/27/2000
Issue date 09/23/2003
Prior Publication Data
Predicted expiration date 06/04/2021
Patent term adjustment 159
U.S. Classifications 428/152  · 428/198  · 428/181  · 428/156  · 442/182  · 442/328  · 428/141  ·
International Classifications --
Kind CodeB2
International Classifications 428141 · 428156 · 428152 · 428181 · 428198 · 442182 · 442328 ·
59 Claims, 3 Drawings


Abstract

A biaxially extendible, breathable laminate having liquid barrier properties and low retractive force. The laminate includes a nonwoven web neck-stretched in a first direction to impart extendibility of the web in a second direction mutually perpendicular with the first direction, and a film that is extendible in the second direction. The film can be a breathable, microporous film, and can either be an inelastic film stretched to form rugosities in the second direction, or can be made of an extendible polymer that is extendible in the second direction. Using an appropriate elastomeric lamination and/or creping adhesive, the laminate is creped to produce extendibility in the first direction with some retractive force. The biaxial extendible laminate is particularly useful as an outer cover for diapers and other personal care products.

Independent Claims | See all claims (59)

  1. 1. A laminated material extendible in a first direction and in a second mutually perpendicular direction, comprising: a film having striated rugosities in the first direction and undulations in the second mutually perpendicular direction; a nonwoven web bonded to the film, the nonwoven web having undulations in the second mutually perpendicular direction; and a creping adhesive applied to the laminated material.
  2. 7. A laminated material extendible in a first direction and in a second mutually perpendicular direction, comprising: a film having undulations in the second direction and extendibility in the second direction; a nonwoven web bonded to the film, the nonwoven web having undulations in the second direction; and a creping adhesive applied to the laminated material.
  3. 12. A laminated material extendible in a first direction and in a second mutually perpendicular direction, comprising: a film extendible in the second direction; a nonwoven web neck-stretched in the first direction and adhesively creped in the first direction; and an adhesive bonding the film to the nonwoven web.
  4. 30. A laminated material extendible in a first direction and in a second mutually perpendicular direction, comprising: an inelastic film creped in the first direction and having rugosities in the second direction; a nonwoven web neck-stretched in the first direction, creped in the first direction, and laminated to the film; and an elastomeric creping adhesive applied to a surface of at least one of the film and web.
  5. 45. A laminated material extendible and recoverable in a first direction and in a second mutually perpendicular direction, comprising: an inelastic film adhesively creped in the first direction and having rugosities in the second direction; a nonwoven web neck-stretched in the first direction, adhesively creped in the first direction, and laminated to the film; and an elastomeric component attached to at least one of the film and the web.

References Cited

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Foreign Patent Documents

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