Breathable clothlike barrier having controlled structure defensive composite

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4713068
SERIAL NO

06925425

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A breathable clothlike barrier which includes a defensive composite having at least two layers: A. a first layer which is a clothlike porous substrate having a first side and a second side, in which: the first layer has a nominal basis weight of at least about 10 g/m.sup.2 ; the fibers comprising the first layer have an average fiber diameter in the range of from about 0.01 to about 10 microns; and each of substantially all of the pores at the surface of the first side of the first layer has a cross-sectional area of from about 6.times.10.sup.-16 m.sup.2 to about 2.times.10.sup.-9 m.sup.2 ; and B. a second layer joined to the first side of the first layer, which second layer is a continuous film of a poly(vinyl alcohol), in which: the film is not microporous in that it is substantially free of voids which connect the two surfaces of the film; and the film has an average thickness of (a) from about 3 to about 25 microns when the basis weight of the first layer is at least about 20 g/m.sup.2 or (b) from about 8 to about 25 microns when the basis weight of the first layer is from about 10 to less than about 20 g/m.sup.2 ; in which the first layer side of the second layer is intimately comingled with at least some of the fibers at the surface of the first side of the first layer, and the defensive composite has a water vapor transmission rate at 37 degrees C. and about 50 percent relative humidity of from about 100 to about 5,000 g/m.sup.2 /24 hours and is impermeable to 0.9 percent by weight saline solution at about 21 degrees C. for a period of at least about one hour at a hydrostatic head of at least about 11.4 cm.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KIMBERLY-CLARK WORLDWIDE, INC.NEENAH, WI3425

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Kenneth Y Roswell, GA 29 1093
Yeo, Richard S Dunwoody, GA 15 982

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TOKYO SEROFAN CO., LTD. (1)
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Other [Check patent profile for assignment information] (1)
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Minnesota Mining and Manufacturing Company (2)
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SMITH AND NEPHEW ASSOCATED COMPANIES P.L.C. (1)
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Smith and Nephew Associated Companies Limited (1)
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TORAY INDUSTRIES, INC. (1)
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NEWHART-JONES, LIMITED, 1070 GLEN OAKS BLVD., PASADENA 91105 CA A PARTNERSHIP OF CA (1)
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The Procter & Gamble Company (1)
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MITSUBISHI KASEI CORPORATION (1)
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Trustee for David Roth (1)
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Hoechst Celanese Corporation (1)
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KIMBERLY-CLARK WORLDWIDE, INC. (1)
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LIFESHIELD SCIENCES LLC (1)
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
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Clopay Plastic Products Company, Inc. (2)
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The Procter & Gamble Company (1)
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Hi-Tex, Inc. (1)
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The Procter & Gamble Company (25)
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6686512 Disposable absorbent articles maintaining low vapor phase moisture content 4 2003
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8395016 Articles containing nanofibers produced from low melt flow rate polymers 3 2004
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9464369 Articles containing nanofibers for use as barriers 0 2005
* 2006/0014,460 Articles containing nanofibers for use as barriers 43 2005
7291763 Absorbent barrier structures having a high convective air flow rate and articles made therefrom 2 2006
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7851668 Absorbent article and method for maintaining or improving skin health 1 2006
8138388 Absorbent article and method for maintaining or improving skin health 7 2010
9663883 Methods of producing fibers, nonwovens and articles containing nanofibers from broad molecular weight distribution polymers 0 2011
8420883 Absorbent article and method for maintaining or improving skin health 1 2011
9138359 Hygiene articles containing nanofibers 0 2012
8835709 Articles containing nanofibers produced from low melt flow rate polymers 1 2013
 
MICROPOROUS PRODUCTS, L.P. (1)
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MMI-IPCO, LLC (4)
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Lakeland Industries, Inc. (1)
9523172 Process for producing polyvinyl alcohol articles 0 2011
 
Tredegar Film Products Corporation (3)
6258308 Process for adjusting WVTR and other properties of a polyolefin film 74 1999
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UNI-CHARM CORPORATION (1)
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SCA INCONTINENCE CARE NORTH AMERICA, INC. (3)
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KIMBERLY-CLARK WORLDWIDE, INC. (30)
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* 5770529 Liquid-distribution garment 16 1995
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* 5843056 Absorbent article having a composite breathable backsheet 125 1996
* 6139675 Process of manufacturing a water-based adhesive bonded, solvent resistant protective laminate 18 1996
* 5695855 Durable adhesive-based ink-printed polyolefin nonwovens 58 1996
* 5919179 Absorbent article incorporating an absorbent assembly 12 1996
* 5865825 Absorbent assembly 13 1996
6420625 Breathable, liquid-impermeable, apertured film/nonwoven laminate and process for making same 61 1997
6659990 Absorbent article having a breathability gradient 14 1999
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7396782 Laminated absorbent product with increased material strength in defined areas 11 2002
7955710 Ultrasonic bonding of dissimilar materials 0 2003
RE39307 Hot-melt adhesive having improved bonding strength 6 2004
7241493 Laminated structures having modified rubber-based adhesives 16 2004
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7632764 Absorbent articles including ultrasonically bonded laminated structures 0 2006
7879745 Laminated absorbent product 2 2007
7745356 Laminated absorbent product with increased strength in defined areas 1 2007
7922861 Processes for increasing strength in defined areas of a laminated absorbent product 1 2008
7786032 Hot-melt adhesive based on blend of amorphous and crystalline polymers for multilayer bonding 6 2008
9744083 Apertured outer cover for absorbent articles 0 2013
 
CLEMSON UNIVERSITY (1)
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KIMBERLY-CLARK CORPORATION (1)
* 5609588 Article having a non-absorbent resilient layer 57 1994
 
W. L. GORE & ASSOCIATES, INC. (1)
* 2005/0144,696 Adjustably insulative construct 2 2004
* Cited By Examiner