|Publication number||US3889679 A|
|Publication date||Jun 17, 1975|
|Filing date||Feb 4, 1974|
|Priority date||Feb 4, 1974|
|Also published as||DE2504296A1|
|Publication number||US 3889679 A, US 3889679A, US-A-3889679, US3889679 A, US3889679A|
|Inventors||Glenn N Taylor|
|Original Assignee||Colgate Palmolive Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (56), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent [1 1 Taylor DISPOSABLE DIAPER WITH HOLES OR WELLS  Inventor: Glenn N. Taylor, Cary, Ill.
 Assignee: Colgate-Palmolive Company, New
22 Filed: Feb. 4, 1974 21 Appl. No.: 439,101
 [1.5. Cl. 128/287 [5|] Int. Cl. Afilf 5/44  Field of Search 128/287, 288, 290, 292,
 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  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.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3345243 *||Aug 26, 1965||Oct 3, 1967||Johnson & Johnson||Apertured nonwoven fabric with channels between apertures|
|US3441024 *||Mar 21, 1966||Apr 29, 1969||Ralph Harold J||Loin garment for absorbent pads|
|US3749627 *||Mar 29, 1971||Jul 31, 1973||J Jones||Reservoir napkin manufacturing process|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3927673 *||Aug 12, 1974||Dec 23, 1975||Colgate Palmolive Co||Quilted diaper|
|US4723953 *||Aug 18, 1986||Feb 9, 1988||Rocky Mountain Medical Corporation||Absorbent pad|
|US4758240 *||Dec 8, 1986||Jul 19, 1988||Glassman Jacob A||Anantomical sanitary and incontinent pads|
|US4762521 *||Apr 11, 1986||Aug 9, 1988||Kimberly-Clark Corporation||Absorbent garment with quilted and conformable absorbent pad|
|US4988344 *||May 24, 1988||Jan 29, 1991||The Procter & Gamble Company||Absorbent articles with multiple layer absorbent layers|
|US4988345 *||May 24, 1988||Jan 29, 1991||The Procter & Gamble Company||Absorbent articles with rapid acquiring absorbent cores|
|US5134007 *||May 1, 1991||Jul 28, 1992||The Procter & Gamble Company||Multiple layer absorbent cores for absorbent articles|
|US5141794 *||Nov 3, 1989||Aug 25, 1992||At&T Bell Laboratories||Superabsorbent article having relatively thin liquid absorbent portion|
|US5300053 *||Nov 4, 1991||Apr 5, 1994||Henry Dreyfuss Associates||Absorbent brief|
|US5470326 *||Apr 12, 1994||Nov 28, 1995||Mcneil-Ppc, Inc.||Clean dry facing needled composite|
|US5769834 *||Nov 18, 1996||Jun 23, 1998||The Procter & Gamble Company||Absorbent article having a fluid pumping element|
|US5788684 *||Mar 12, 1996||Aug 4, 1998||Kimberly-Clark Worldwide, Inc.||Liquid-absorbing article|
|US5941863 *||Dec 27, 1995||Aug 24, 1999||Sca Molnlycke Ab||Absorbent articles having improved properties|
|US5961507 *||Dec 28, 1995||Oct 5, 1999||Sca Hygiene Products Ab||Absorbent body which includes cavities|
|US6152906 *||Aug 25, 1998||Nov 28, 2000||Kimberly-Clark Worldwide, Inc.||Absorbent article having improved breathability|
|US6220999||Mar 19, 1999||Apr 24, 2001||Kimberly-Clark Worldwide, Inc.||Method and apparatus for forming an apertured pad|
|US6296862||Sep 27, 2000||Oct 2, 2001||Kimberly-Clark Worldwide||Absorbent article which maintains or improves skin health|
|US6316013||Sep 27, 2000||Nov 13, 2001||Kimberly-Clark Worldwide, Inc.||Absorbent article which maintains or improves skin health|
|US6429351||Jun 26, 1997||Aug 6, 2002||Sca Hygiene Products Ab||Absorbent bodies in absorbent articles having improved liquid acquisition properties|
|US6454690||Jan 30, 2001||Sep 24, 2002||Kimberly-Clark Worldwide, Inc.||Method and apparatus for forming an apertured pad|
|US6482422||Sep 27, 2000||Nov 19, 2002||Kimberly-Clark Worldwide, Inc.||Absorbent article which maintains or improves skin health|
|US6503233||Oct 2, 1998||Jan 7, 2003||Kimberly-Clark Worldwide, Inc.||Absorbent article having good body fit under dynamic conditions|
|US6503525||Sep 27, 2000||Jan 7, 2003||Kimberly-Clark Worldwide, Inc.||Absorbent article which maintains or improves skin health|
|US6562192||Apr 12, 2000||May 13, 2003||Kimberly-Clark Worldwide, Inc.||Absorbent articles with absorbent free-flowing particles and methods for producing the same|
|US6667424||Apr 12, 2000||Dec 23, 2003||Kimberly-Clark Worldwide, Inc.||Absorbent articles with nits and free-flowing particles|
|US6673982||Oct 2, 1998||Jan 6, 2004||Kimberly-Clark Worldwide, Inc.||Absorbent article with center fill performance|
|US6695827||Nov 27, 2002||Feb 24, 2004||Kimberly-Clark Worldwide, Inc.||Absorbent article having good body fit under dynamic conditions|
|US6852101||Feb 4, 2002||Feb 8, 2005||First Quality Products, Inc.||Liquid absorbent pad having a single large through slit and absorbent article comprising same|
|US7265258||Sep 12, 2003||Sep 4, 2007||Kimberly-Clark Worldwide, Inc.||Absorbent articles with nits and free-flowing particles|
|US7429689||Sep 15, 2003||Sep 30, 2008||Kimberly-Clark Worldwide, Inc.||Absorbent article with center fill performance|
|US7718021||Apr 21, 2006||May 18, 2010||Kimberly-Clark Worldwide, Inc.||Method for making a stabilized absorbent composite|
|US7857797 *||Aug 16, 2005||Dec 28, 2010||Uni-Charm Corporation||Sanitary napkin having a low stiffness region and incisions|
|US8198506||Apr 21, 2006||Jun 12, 2012||Kimberly-Clark Worldwide, Inc.||Stabilized absorbent composite|
|US8519213||May 9, 2012||Aug 27, 2013||Kimberly-Clark Worldwide, Inc.||Stabilized absorbent composite|
|US8702668 *||Jun 8, 2012||Apr 22, 2014||The Procter And Gamble Company||Sanitary napkins capable of taking complex three-dimensional shape in use|
|US9044359 *||Apr 1, 2009||Jun 2, 2015||The Procter & Gamble Company||Disposable absorbent article with absorbent particulate polymer material distributed for improved isolation of body exudates|
|US9066837||Oct 29, 2010||Jun 30, 2015||Kimberly-Clark Worldwide, Inc.||Absorbent article with annular absorbent member|
|US9649233||Apr 25, 2012||May 16, 2017||Kimberly-Clark Worldwide, Inc.||Absorbent personal care articles having longitudinally oriented layers in discrete portions|
|US20030130643 *||Dec 6, 2002||Jul 10, 2003||Solgun Drevik||Absorbent article with improved fit|
|US20030149411 *||Feb 28, 2003||Aug 7, 2003||Keuhn Charles Paul||Absorbent article with increased wet breathability|
|US20030149412 *||Feb 4, 2002||Aug 7, 2003||First Quality Enterprises, Inc.||Liquid absorbent pad having a single large through slit and absorbent article comprising same|
|US20040102752 *||Sep 15, 2003||May 27, 2004||Fung-Jou Chen||Absorbent article with center fill performance|
|US20040127871 *||Dec 31, 2002||Jul 1, 2004||Odorzynski Thomas W.||Secondary absorbent article|
|US20060058761 *||Aug 16, 2005||Mar 16, 2006||Uni-Charm Corporation||Sanitary napkin|
|US20060206091 *||Mar 10, 2005||Sep 14, 2006||Tyco Healthcare Retail Services Ag||Absorbent article having a channeled absorbent layer and method of making the same|
|US20070078422 *||Sep 30, 2005||Apr 5, 2007||Tyco Healthcare Retail Services Ag||Absorbent article configured for controlled deformation and method of making the same|
|US20070246147 *||Apr 21, 2006||Oct 25, 2007||Kimberly-Clark Worldwide, Inc.||Method for making a stabilized absorbent composite|
|US20070250026 *||Apr 21, 2006||Oct 25, 2007||Kimberly-Clark Worldwide, Inc.||Stabilized absorbent composite|
|US20070282290 *||Aug 7, 2007||Dec 6, 2007||Robert Cole||Absorbent article having a channeled absorbent layer and method of making the same|
|US20070282291 *||Aug 7, 2007||Dec 6, 2007||Robert Cole||Absorbent article having a channeled absorbent layer and method of making the same|
|US20090270825 *||Apr 1, 2009||Oct 29, 2009||Maja Wciorka||Disposable Absorbent Article With Absorbent Particulate Polymer Material Distributed For Improved Isolation Of Body Exudates|
|US20120253305 *||Jun 8, 2012||Oct 4, 2012||John Richard Noel||Sanitary Napkins Capable of Taking Complex Three-Dimensional Shape in Use|
|US20150238369 *||Feb 20, 2015||Aug 27, 2015||Attends Healthcare Products, Inc.||Absorbent article with fluid control features|
|WO1991009583A1 *||Dec 14, 1990||Jul 11, 1991||Mölnlycke AB||An absorbent component for use in disposable absorbent articles, such as diapers or incontinence guards|
|WO1996020670A1 *||Dec 27, 1995||Jul 11, 1996||SCA Mölnlycke AB||Absorbent articles having improved properties|
|WO1998000081A1 *||Jun 26, 1997||Jan 8, 1998||Sca Hygiene Products Ab||Absorbent bodies in absorbent articles having improved liquid acquisition properties|
|U.S. Classification||604/378, 604/385.101|
|International Classification||A61F13/49, A61F13/15, A61F13/53|