Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3889679 A
Publication typeGrant
Publication dateJun 17, 1975
Filing dateFeb 4, 1974
Priority dateFeb 4, 1974
Also published asDE2504296A1
Publication numberUS 3889679 A, US 3889679A, US-A-3889679, US3889679 A, US3889679A
InventorsGlenn N Taylor
Original AssigneeColgate Palmolive Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Disposable diaper with holes or wells
US 3889679 A
Abstract
A disposable diaper comprising an absorbent body and a water impervious backing sheet wherein the absorbent body is provided with a multiplicity of fluid passages extending through the absorbent body, whereby fluid may flow, in one portion of the diaper, directly through the absorbent body for flow along the backing sheet so as to be absorbed in remote portions of the absorbent body. The passages also serve to reduce the bulk of the absorbent body in the crotch region and thereby improve the fit and comfort of the diaper.
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent [1 1 Taylor DISPOSABLE DIAPER WITH HOLES OR WELLS [75] Inventor: Glenn N. Taylor, Cary, Ill.

[73] Assignee: Colgate-Palmolive Company, New

York, NY.

22 Filed: Feb. 4, 1974 21 Appl. No.: 439,101

[52] [1.5. Cl. 128/287 [5|] Int. Cl. Afilf 5/44 [58] Field of Search 128/287, 288, 290, 292,

[56] References Cited UNITED STATES PATENTS 3,345,243 10/1967 Kalwaites [28/290 3,441,024 4/1969 Ralph l28/287 June 17, 1975 3,749,627 7/1973 Jones 128/290 Primary Examiner-Richard A. Gaudet Assistant Examiner-Henry S. Layton [57] ABSTRACT A disposable diaper comprising an absorbent body and a water impervious backing sheet wherein the ab sorbent body is provided with a multiplicity of fluid passages extending through the absorbent body, whereby fluid may flow, in one portion of the diaper, directly through the absorbent body for flow along the backing sheet so as to be absorbed in remote portions of the absorbent body. The passages also serve to reduce the bulk of the absorbent body in the crotch region and thereby improve the fit and comfort of the diaper.

4 Claims, 2 Drawing Figures 1 DISPOSABLE DIAPER WITH HOLES OR WELLS BACKGROUND OF THE INVENTION This invention relates to disposable diapers.

SUMMARY OF THE INVENTION Objects of the present invention include the provision of a disposable diaper which has improved ability to accept a surge of fluid, which is less bulky in the diaper crotch region, and which is relatively inexpensive to manufacture.

According to the present invention it has been discovered that these and other objects can be achieved by the provision ofa multiplicity of fluid passages in the diaper absorbent body extending through that body. A flexible, water impervious backing sheet is disposed adjacent the outer surface of the absorbent body and cooperates with the passages to provide a flow route from the absorbent pads inner surface in the diaper crotch region, through the fluid passages in that region, then transversely along the water impervious backing sheet for ultimate absorption by the absorbent body portions remote from the location where the fluid was initially received. In preferred embodiments of the invention the fluid passages are cylindrical having a diameter of from about A to about 1 inch and the passages are provided throughout the full extent of the absorbent body, thereby simplifying the manufacture of the absorbent body and rendering still less raw material necessary for its manufacture. Also, the absorbent body may include water pervious inner and outer sheets which encase the actual absorbent mass which is provided with the fluid passages.

BRIEF DESCRIPTION OF THE DRAWING Other objects, features, and advantages of the invention will appear from the following description ofa particular preferred embodiment, taken together with the accompanying drawing. In the drawing:

FIG. 1 is a partially broken away perspective view of a disposable diaper constructed according to the present invention; and

FIG. 2 is a view taken at 22 of FIG. I.

DETAILED DESCRIPTION OF A PARTICULAR PREFERRED EMBODIMENT Referring to the drawing, there is shown a diaper comprising a water-impervious, flexible, plastic backing sheet 12, an inner liner l4 (typically a thin nonwoven material), and an absorbent body 16 sandwiched between the backing sheet 12 and the liner l4. Tape units 18 may be provided for securing the diaper to an infant. The diaper, preferably, has a box pleat configuration, at least in the crotch portion of the diaper. This is indicated in FIG. I where the absorbent body 16 is doubled over upon itself along fold lines 20 and 22. The absorbent body 16 may comprise a mass of absorbent material having a substantial thickness and inner and outer water pervious sheets 17 secured thereto.

According to the present invention, the absorbent body portion 15 is provided with a multiplicity of fluid passage-defining openings 24 which extend from the inner surface of the portion 15 to the outer surface thereof. The openings are circular in shape and have a diameter of between about A and l inch.

In operation, the provision of the openings 24 in the absorbent body portion 15, as well as the location of the water-impervious backing sheet 12 adjacent the outer surface of the absorbent body 16, provides a structure in which fluid can pass directly from the inner surface of the body 16 to its outer surface in one portion of the diaper (the fluid being substantially unimpeded by sheets 17) and then, flowing along the inner surface of the backing sheet 12 can be absorbed by remote portions of the absorbent body I6 thereby more fully utilizing the absorbent capacity of the entirety of the absorbent body 16. Furthermore, the provision of openings of the general size described reduces the bulk of the diaper in the crotch region without rendering the absorbent body so flimsy as to lose structural integrity upon wetting. The bulk reduction in the crotch region also improves the fit and comfort of the diaper. The provision of openings 24 reduces the amount of raw materials required for the body 16 and, thus, the manu facturing cost.

While a particular preferred embodiment of the present invention has been illustrated in the accompanying drawing and described in detail herein, other embod. ments are within the scope of the invention and the following claims:

I. A disposable diaper comprising an absorbent body and a flexible water impervious backing sheet, said absorbent body comprising a continuous integral mass of fibers formed into a sheet having an inner surface and having an outer surface disposed adjacent said backing sheet, said absorbent body having a multiplicity of openings therein extending therethrough defining fluid passages from said inner surface to said outer surface, whereby fluid may flow from said inner to said outer surface through said openings, said absorbent body being free of the backing sheet throughout a sufficient area intermediate the openings to permit unimpeded flow of fluid along a surface of the backing sheet to regions of the absorbent body remote the openings and absorption therein.

2. A diaper as claimed in claim 1 wherein said passages are distributed substantially uniformly over the full extent of said absorbent body.

3. A diaper as claimed in claim I wherein said passages are cylindrical and have a diameter of between about 4 and 1 inch.

4. A diaper as claimed in claim 1 wherein said absorbent body further comprises a water pervious sheet on each side of said mass of fibers.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3345243 *Aug 26, 1965Oct 3, 1967Johnson & JohnsonApertured nonwoven fabric with channels between apertures
US3441024 *Mar 21, 1966Apr 29, 1969Ralph Harold JLoin garment for absorbent pads
US3749627 *Mar 29, 1971Jul 31, 1973J JonesReservoir napkin manufacturing process
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3927673 *Aug 12, 1974Dec 23, 1975Colgate Palmolive CoQuilted diaper
US4723953 *Aug 18, 1986Feb 9, 1988Rocky Mountain Medical CorporationAbsorbent pad
US4758240 *Dec 8, 1986Jul 19, 1988Glassman Jacob AAnantomical sanitary and incontinent pads
US4762521 *Apr 11, 1986Aug 9, 1988Kimberly-Clark CorporationAbsorbent garment with quilted and conformable absorbent pad
US4988344 *May 24, 1988Jan 29, 1991The Procter & Gamble CompanyAbsorbent articles with multiple layer absorbent layers
US4988345 *May 24, 1988Jan 29, 1991The Procter & Gamble CompanyAbsorbent articles with rapid acquiring absorbent cores
US5134007 *May 1, 1991Jul 28, 1992The Procter & Gamble CompanyMultiple layer absorbent cores for absorbent articles
US5141794 *Nov 3, 1989Aug 25, 1992At&T Bell LaboratoriesSpunbonded nonwoven polyester substrate of high tensile strength and porosity impregnated with superabsorbent material
US5300053 *Nov 4, 1991Apr 5, 1994Henry Dreyfuss AssociatesAbsorbent brief
US5470326 *Apr 12, 1994Nov 28, 1995Mcneil-Ppc, Inc.Facing material suitable for use in diapers and sanitary napkins
US5769834 *Nov 18, 1996Jun 23, 1998The Procter & Gamble CompanyAbsorbent article having a fluid pumping element
US5788684 *Mar 12, 1996Aug 4, 1998Kimberly-Clark Worldwide, Inc.Liquid-absorbing article
US5941863 *Dec 27, 1995Aug 24, 1999Sca Molnlycke AbAbsorbent articles having improved properties
US5961507 *Dec 28, 1995Oct 5, 1999Sca Hygiene Products AbAbsorbent body which includes cavities
US6152906 *Aug 25, 1998Nov 28, 2000Kimberly-Clark Worldwide, Inc.Absorbent article having improved breathability
US6220999Mar 19, 1999Apr 24, 2001Kimberly-Clark Worldwide, Inc.Method and apparatus for forming an apertured pad
US6296862Sep 27, 2000Oct 2, 2001Kimberly-Clark WorldwideAbsorbent article which maintains or improves skin health
US6316013Sep 27, 2000Nov 13, 2001Kimberly-Clark Worldwide, Inc.Absorbent article which maintains or improves skin health
US6429351Jun 26, 1997Aug 6, 2002Sca Hygiene Products AbAbsorbent bodies in absorbent articles having improved liquid acquisition properties
US6454690Jan 30, 2001Sep 24, 2002Kimberly-Clark Worldwide, Inc.Method and apparatus for forming an apertured pad
US6482422Sep 27, 2000Nov 19, 2002Kimberly-Clark Worldwide, Inc.Disposable products
US6503233Oct 2, 1998Jan 7, 2003Kimberly-Clark Worldwide, Inc.Absorbent article having good body fit under dynamic conditions
US6503525Sep 27, 2000Jan 7, 2003Kimberly-Clark Worldwide, Inc.Absorbent article which maintains or improves skin health
US6562192Apr 12, 2000May 13, 2003Kimberly-Clark Worldwide, Inc.Absorbent articles with absorbent free-flowing particles and methods for producing the same
US6667424Apr 12, 2000Dec 23, 2003Kimberly-Clark Worldwide, Inc.Absorbent articles with nits and free-flowing particles
US6673982Oct 2, 1998Jan 6, 2004Kimberly-Clark Worldwide, Inc.Absorbent article with center fill performance
US6695827Nov 27, 2002Feb 24, 2004Kimberly-Clark Worldwide, Inc.Absorbent article having good body fit under dynamic conditions
US6852101Feb 4, 2002Feb 8, 2005First Quality Products, Inc.Liquid absorbent pad having a single large through slit and absorbent article comprising same
US7265258Sep 12, 2003Sep 4, 2007Kimberly-Clark Worldwide, Inc.Absorbent articles with nits and free-flowing particles
US7429689Sep 15, 2003Sep 30, 2008Kimberly-Clark Worldwide, Inc.Absorbent article with center fill performance
US7718021Apr 21, 2006May 18, 2010Kimberly-Clark Worldwide, Inc.Method for making a stabilized absorbent composite
US7857797 *Aug 16, 2005Dec 28, 2010Uni-Charm CorporationSanitary napkin having a low stiffness region and incisions
US8198506Apr 21, 2006Jun 12, 2012Kimberly-Clark Worldwide, Inc.Stabilized absorbent composite
US8519213May 9, 2012Aug 27, 2013Kimberly-Clark Worldwide, Inc.Stabilized absorbent composite
US8702668 *Jun 8, 2012Apr 22, 2014The Procter And Gamble CompanySanitary napkins capable of taking complex three-dimensional shape in use
US20120253305 *Jun 8, 2012Oct 4, 2012John Richard NoelSanitary Napkins Capable of Taking Complex Three-Dimensional Shape in Use
WO1991009583A1 *Dec 14, 1990Jul 11, 1991Moelnlycke AbAn absorbent component for use in disposable absorbent articles, such as diapers or incontinence guards
WO1996020670A1 *Dec 27, 1995Jul 11, 1996Anette BuschkaAbsorbent articles having improved properties
WO1998000081A1 *Jun 26, 1997Jan 8, 1998Anette BuschkaAbsorbent bodies in absorbent articles having improved liquid acquisition properties
Classifications
U.S. Classification604/378, 604/385.101
International ClassificationA61F13/49, A61F13/15, A61F13/53
Cooperative ClassificationA61F13/532
European ClassificationA61F13/532