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US4540414: Method and apparatus for absorbing moisture

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Filing Information

Inventor(s) Marvin Wishman ·
Assignee(s) Phillips Petroleum Company ·
Attorney/Agent(s) French and Doescher ·
Primary Examiner Rosenbaum; C. Fred ·
Assistant Examiner Shedd; C. W. ·
Application Number US6556674
Filing date 11/30/1983
Issue date 09/10/1985
Predicted expiration date 09/10/2002
U.S. Classifications 604/378  · 604/370  ·
International Classifications B32B 704  ·
Kind CodeA
International Classifications 604370;372;307;308;378;366 ·
Related U.S. Application DataThis is a division of application Ser. No. 260,473, filed May 4, 1981, a continuation of application Ser. No. 844,350, filed Oct. 21, 1977, now abandoned.
7 Claims, No Drawings


Abstract

An improved nonwoven polypropylene fabric, having the fibers on one side fused and the fibers on the opposite side unfused, which fabric when wetted exhibits a wet feeling on the fused side and a substantially dry feeling on the unfused side. Also disclosed are bandage, diaper, hat sweatband and headband or wristband structures employing the fabric as well as a method of transferring moisture from a moisture-bearing surface utilizing the fabric.

Independent Claims | See all claims (7)

  1. 1. A multilayer diaper comprising:a porous facing layer in the form of a web of nonwoven fabric including a plurality of staple polypropylene fibers, a first portion of said polypropylene fibers being unfused on a first side of said fabric and forming liquid-pervious unfused fiber facing means for engaging a liquid-bearing surface, and a second portion of said polypropylene fibers being fused on the opposite side of said fabric separated from the liquid-bearing surface by said first portion of said polypropylene fibers, whereby liquid adsorbed by said liquid-pervious unfused fiber facing means migrates through the unfused fibers toward the fused fibers;a substantially moisture-impervious backing sheet disposed adjacent the opposite side of said web of nonwoven fabric;a substantially moisture-pervious sheet disposed adjacent to the unfused first side of said web of nonwoven fabric; andmeans for securing said substantially moisture-pervious sheet to said moisture-impervious backing sheet.
  2. 6. In a multilayer, composite, disposable diaper of the type which includes a moisture-pervious facing layer adapted to be positioned in engagement with a wearer; a moisture-absorbent core disposed beneath said facing layer for absorbing and retaining body fluids which pass through said facing layer; resilient foam layer means beneath said absorbent core for confining and maintaining the absorbent core in the perineal region of the wearer; a substantially moisture-impervious backing sheet beneath said resilient foam layer means; and bonding means for retaining the components of the disposable diaper in an assembled, composite construction, the improvement in wicking means associated with said absorbent core comprising:a layer of nonwoven fabric including a plurality of staple polypropylene fibers, a first portion of said fibers being unfused on a first side of said fabric and forming liquid-pervious unfused fiber facing means for engaging a liquid-bearing surface and facing said moisture-pervious facing layer, and a second portion of said fibers being fused on the opposite side of said fabric separated from the liquid-bearing surface by said first portion of said fibers and facing said resilient foam layer means, whereby liquid absorbed by said liquid-pervious unfused fiber facing means migrates through the unfused fibers toward the fused fibers on the opposite side of said layer of nonwoven fabric.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3324609 NORTON CO Stein et al. Jun 1967
US3949130 Tuff Spun Products, Inc. Sabee et al. Apr 1976
US4042655 Phillips Petroleum Company Platt et al. Aug 1977

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
AU656043 KIMBERLY CLARK CO SERBIAK PAUL JOHN et al. Jan 1995
USRE39919 Kimberly Clark Worldwide, Inc. Richard Norris Dodge, II et al. Nov 2007
USD599980 Yupoong, Inc. Byoung-Woo Cho Sep 2009
US6676501 Wallace J. Beaudry Jan 2004
US6464815 Wallace J. Beaudry Oct 2002
EP0248584 Kao Corporation Toshihiro Shirose et al. Jun 1993
EP0354196 Mlnlycke AB Anita Nyberg Feb 1990
EP0548714 KIMBERLY-CLARK WORLDWIDE, INC. Paul John Serbiak et al. Dec 2004
EP0474317 KAO CORPORATION Toshihiro Shirose et al. Mar 1997
EP0548714B119980401 KIMBERLY-CLARK WORLDWIDE, INC. Paul John Serbiak et al. Jun 1993
US5009650 Kimberly-Clark Corporation Leo J. Bernardin Apr 1991
US5437653 Kimberly-Clark Corporation Thomas H. Gilman et al. Aug 1995
US5628739 McNeil-PPC, Inc. Tong-Ho J. Hsieh et al. May 1997
US4798603 Kimberly-Clark Corporation Stephen C. Meyer et al. Jan 1989
US5845654 Mavis J. Johnson Dec 1998
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US4925453 Sealed Air Corporation Charles P. Kannankeril May 1990
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US5509915 Kimberly-Clark Corporation William D. Hanson et al. Apr 1996
US5614574 Lyondell Petrochemical Company Paresh J. Sheth Mar 1997
US6206865 Kimberly-Clark Worldwide, Inc. Fung-jou Chen et al. Mar 2001
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US5454800 Kimberly-Clark Corporation Dede A. Hirt et al. Oct 1995
US6269820 Xomed Surgical Products, Inc. F. Barry Bays Aug 2001
US5171238 The Transzonic Companies Richard E. Kajander Dec 1992
US5192606 Kimberly-Clark Corporation Deborah L. Proxmire et al. Mar 1993
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US5994615 Kimberly-Clark Worldwide, Inc. II; Richard Norris Dodge et al. Nov 1999
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US5591151 The Procter & Gamble Company Margaret H. Hasse et al. Jan 1997
US6060638 Kimberly-Clark Worldwide, Inc. Susan Carol Paul et al. May 2000
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US6316687 Kimberly-Clark Worldwide, Inc. James Arthur Davis et al. Nov 2001
USH1575 Thomas H. Daugherty et al. Aug 1996
US5820973 Kimberly-Clark Worldwide, Inc. II; Richard Norris Dodge et al. Oct 1998
US5807362 Kimberly-Clark Worldwide, Inc. Paul John Serbiak et al. Sep 1998
US6042575 The Procter & Gamble Company III; Thomas Ward Osborn et al. Mar 2000
US5084332 Phillips Petroleum Company Kenneth W. Burgess Jan 1992
US5025504 Weyerhaeuser Company Phyllis S. Benston et al. Jun 1991

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