US3744494A - Disposable diaper with improved containment characteristics - Google Patents

Disposable diaper with improved containment characteristics Download PDF

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US3744494A
US3744494A US3744494DA US3744494A US 3744494 A US3744494 A US 3744494A US 3744494D A US3744494D A US 3744494DA US 3744494 A US3744494 A US 3744494A
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isolation
diaper
lines
line
backing sheet
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M Marsan
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Procter and Gamble Co
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Procter and Gamble Co
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49001Absorbent articles specially adapted to be worn around the waist, e.g. diapers having preferential bending zones, e.g. fold lines or grooves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/53409Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad having a folded core
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F2013/4512Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use
    • A61F2013/4568Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use three-dimensional; with split absorbent core
    • A61F2013/4581Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use three-dimensional; with split absorbent core with absorbent core in separated pieces

Abstract

A disposable diaper construction includes a water impervious plastic backing sheet and, preferably, a hydrophobic, moisturepermeable topsheet. An absorbent pad or core is interposed between the backing sheet and the topsheet. Discontinuities in the absorbent core provide lines of isolation between several adjacent but separated core portions. The topsheet and backing sheet are continuous in the relatively narrow areas which form the lines of isolation. The fold lines of the diaper preferably coincide with the lines of isolation. This structure results in improved fluid containment as the lines of isolation between the adjoining core portions provide a barrier to sidewise fluid flow such that liquids tend to flow lengthwise of the diaper. In a preferred configuration, the diaper has excellent fitting characteristics in relation to the contours of the body of the infant, particularly around the legs, and this results in further efficiencies from the standpoint of fluid containment.

Description

United States Patent 1 Marsan [4 1 July 10, 1973 [75] lnventor:

[73] Assignee: The Procter & Gamble Company, Cincinnati, Ohio [22] Filed: July 10, 1970 [21] Appl. No.: 53,762

Mario S. Marsan, Cincinnati, Ohio [52] US. Cl. 128/287 [51] Int. Cl. A6lf 13/16 [58] Field of Search 128/284, 286, 287, 128/290, 296

[56] References Cited UNITED STATES PATENTS 3,670,731 6/1972 Harmon 128/284 3,196,874 7/1965 Hrubecky 128/287 3,211,147 10/1965 Pherson et a1. 128/284 3,356,092 12/1967 Joa 128/287 3,402,715 9/1968 Liloia et al.... 128/287 3,430,629 3/1969 Murphy 128/284 3,444,859 5/1969 Kalwaites 128/284 3,523,536 8/1970 Ruffo 128/287 Primary ExaminerCharles F. Rosenbaum Attorney-Fredrick H. Braun and John V. Gorman [5 7] ABSTRACT A disposable diaper construction includes a water impervious plastic backing sheet and, preferably, a hydrophobic, moisture-permeable topsheet. An absorbent pad or core is interposed between the backing sheet and the topsheet. Discontinuities in the absorbent core provide lines of isolation between several adjacent but separated core portions. The topsheet and backing sheet are continuous in the relatively narrow areas which form the lines of isolation. The fold lines of the diaper preferably coincide with the lines of isolation. This structure results in improved fluid containment as the lines of isolation between the adjoining core portions provide a barrier to sidewise fluid flow such that liquids tend to flow lengthwise of the diaper. In a preferred configuration, the diaper has excellent fitting characteristics in relation to the contours of the body of the infant, particularly around the legs, and this results in further efficiencies from the standpoint of fluid containment.

15 Claims, 5 Drawing Figures PAIENIED JUL 1 0W3 3 744 494 INVENTOR. Mario 8. Murson ATTORNEY DISPOSABLE DIAPER WITH IMPROVED CONTAINMENT CHARACTERISTICS BACKGROUND OF THE INVENTION I In the field of disposable diapers, there has been an ever present desire to improve the ability of the diaper to contain fluids. This effort has gone hand-in-hand with efforts to improve the fit of the diaper to the body of the infant which brings with it the incidental benefit of providing some improvement in fluid containment. Previous efforts along these lines have sought to achieve these objectives in numerous-ways. One of the more common ways has been by extending the plastic backing sheet to provide inner side flaps which overlap the edge surfaces of the topsheet. Another way has been by the provision'of a plurality of lines of embossment through the topsheet, absorptive pad and backing sheet with the lines of embossment running in a particular direction and having a predetermined pattern. While each of these approaches have met with some success, there has been a continuing search for even greater improvement and better results than those that have been achieved with any of the prior constructions.

SUMMARY OF THE INVENTION The nature and substance of the invention will be more readily appreciated after giving consideration to its major aims and purposes. The principal objects of the invention are recited in the ensuing paragraphs in order to provide a better appreciation of its important aspects prior to describing the details of a preferred embodiment in later portions of this description.

A major object of the invention is the provision of an improved structure for disposable diapers which provides substantial=improvement in the capacity of the diaper for containing fluids.

Another object of the invention is the provision of an improved diaper structure which incorporates a built-in fluid barrier to inhibit sidewise fluid flow thus encouraging the captured luquids to spread in the long dimension of the diaper.

.A further object of the invention is the provision of a diaper of the above character which includes a folding pattern making the diaper fit more snugly to the infant thus providing better fit, particularly around the leg openings, so that ideally the leg areas will be subjected to less direct fluid deposition and thus further enhance the fluid containmentcharacteristics of the diaper itself.

These and other objects are achieved by the provision of a disposable diaper having an absorbent core interposed between a moisture-permeable topsheet and a water impervious backing sheet. The absorbent core is formed with narrow and continuous discontinuities which extend between the edges of the diaper. The topsheet and the backing sheet are continuous in the areas of the discontinuities of the core. The discontinuities in the absorbent core and the continuity of the topsheet and the backing sheet in these areas provide lines of isolation in the diaper structure which provide fluid barriers that inhibit lateral fluid flow in the diaper thereby encouraging fluid flow in the long direction. This results in a substantial improvement in the fluid containment characteristics of the diaper structure particularly when coupled with the improved fit of the preferred structure.

BRIEF DESCRIPTION OF THE DRAWING While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter regarded as forming the present invention, it is believed the invention will be better understood from the following description taken in connection with the accompanying drawing in which:

FIG. 1 is a plan view illustrating a preferred diaper structure incorporating the concept of the invention.

FIG. 2 is a fragmentary cross section, in elevation, taken on the line 2-2 of FIG. 1 illustrating typical discontinuities in the absorbent cord as well as the lines of isolation which also form the folding pattern.

FIG. 3 is a plan view of the diaper of FIG. 1 after it has been folded in half thus illustrating the manner in which the fold lines cooperate to permit such folding for easy storage.

FIG. 4 is a fragmentary plan view, in cross section, taken on the line 4--4 of FIG. 3 illustrating the manner in which the side areas are folded and formed and also showing the placement of spot glue areas for maintaining the side areas in contiguous relationship. The view has been dimensionally exaggerated purely for the sake of better illustration.

FIG. 5 is as isometric view of the diaper after-it has been folded into its configuration for use.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings and particularly to FIGS. 1 and 2 thereof, a disposable diaper 10 is illustrated. In the preferred construction illustrated in the drawings, the diaper 10 includes a backing sheet 11 which is preferably a plastic material that is relatively thin and flexible and is impervious to the transmission of water, such as polyethylene, polypropylene or the like. The backing sheet 11 forms the surface which is usually furthest removed from the skin of the infant. A topsheet 12 is provided to form the inner surface of the completed diaper or, in other words, the surface which is nearest the skin of the infant. The topsheet preferably has hydrophobic characteristics and is one selected from any number of nonwoven fabric materials having the necessary properties as familiar to those skilled in the art.

An absorbent core is interposed between the backing sheet 11 and the topsheet 12 in order to capture the bulk of the fluid to be contained in the diaper. In the preferred construction of the present embodiment, the absorbent core is separated by discontinuities into a relatively large central pad 13, intermediate lateral pads 14 and 15, respectively, and the smaller lateral pads 16 and 17, respectively. The absorbent core may be selected from any of the well known materials suited for this purpose as will be familiar to persons skilled in the art.

The edges of the backing sheet 11 and the topsheet 12 are preferably shaped so that the overall pad configuration in flat form, as illustrated in FIG. I, resembles an hour glass. The hour glass shape in the preferred embodiment has been found to provide better fit characteristics as will be apparent in the ensuing description. The peripheral edges of the backing sheet 11 and the topsheet 12 are superposed beyond the side extremities of the absorbent pad portions whereupon side seams l8 and 19 are formed either by the use of an adhesive or alternatively by heat sealing the material of the plastic backing sheet 11 to the topsheet 12.

The discontinuities between the absorbent pad portions 13, 14, 15, 16 and 17 provide lines of isolation. These lines between the adjacent pad portions permit the backing sheet 11 and the topsheet 12 to be superposed and continuous in these relatively narrow areas. In a preferred construction, the backing sheet 11 and the topsheet 12 may be adhered in the areas forming the lines of isolation as by a suitable adhesive or by heat sealing. An examination of FIG. 2 illustrates lines of isolation 20 and 21 that are formed in this fashion. Similar lines of isolation 22 and 23 are formed on the other side of the diaper. The lines of isolation 20, 21, 22 and 23 are preferably of from about /4 inch to about inch in width.

The lines of isolation can also be formed by adhering the pads 13, 14, 15, 16 and 17 directly to the backing sheet 11 or the topsheet 12, or both. In the latter case it is not necessary to adhere the backing sheet 11 to the topsheet 12 although this may also be done if desired.

The lines of isolation 20, 21, 22 and 23 provide areas of complete separation between the several absorbent core portions 13, 14, 15, 16 and 17 to provide barriers against lateral fluid flow when the diaper is in use. These barriers tend to encourage fluid flow in the long direction of the diaper and thus substantially improve the containment characteristics. The effectiveness of the lines of isolation 20, 21, 22 and 23 is enhanced by the fact of their structure which includes the water impervious backing sheet 11 and the hydrophobic nonwoven topsheet 12.

In the preferred diaper construction as illustrated, the lines of isolation 20, 21, 22 and 23 are formed such that each of them extends from one side edge toward the central axis 24 of the diaper l0 whereupon they are reversely curved and return and terminate at the same side edge. In a most preferred form, the lines of isolation 20, 21, 22 and 23 are of hyperbolic shape such that they isolate intermediate angular areas 25 and 26, respectively, and together with the side seams 18 and 19, respectively, they isolate the outer angular areas 27 and 28, respectively.

When the diaper is folded over on the central axis 24 to the configuration shown in FIG. 3, the lines of isolation 20, 21, 22 and 23 act as fold lines having a high degree of flexibility. Thus, the diaper can be folded such that the portion of the topsheet 12 covering the intermediate angular areas 25 and 26 will fold against the portion of the topsheet 12 covering the central area 29. Similarly, the portion of the backing sheet 11 covering the outer angular areas 27 and 28 will fold over against and be superposed with the portion of the backing sheet 11 covering the intermediate angular areas 25 and 26, respectively. The manner in which the several areas are folded together is illustrated in exaggerated fashion by the cross section of FIG. 4.

Another aspect of a preferred embodiment of the diaper is also illustrated in FIG. 4. In particular, glue spots are provided for holding the folded and superosed areas in place. The glue spot is provided to hold the intermediate area 25 to the central area 29 and the glue spot 31 holds the intermediate area 25 to the outer area 27 in the upper portion of the diaper. Similarly, the glue spots 32 and 33 are provided for the same function in the lower portion of the diaper. FIG. 4 also illustrates the ease with which folding takes place along the lines of isolation 21 and 21.

It will be understood, that in the preferred constructiona similar group of glue spots 30a, 31a, 32a, and 33a (FIG. 3) are provided on the several areas 26, 28 and 29 in forming and folding the other side edge of the diaper. In both cases the glue spots are provided near the extremeties of the intermediate angular areas 25, 16, and the outer angular areas 27, 28 as will be apparent from an examination of FIG. 3. The purpose of the glue spots is to assure that the pleating of the intermediate angular areas 25 and 26 and the outer angular areas 27 and 28 is not disturbed at the extremities thereof when the diaper is placed around an infants legs. The maintenance of the pleats assures a superior snug fit and further increases the containment efficiency of the preferred diaper construction.

Another preferred aspect of the present construction is the off center placement of the central axis 24 with respect to the end extremities 34 and 35 of the diaper. The axis 24 is nearer the extremity 34 which ultimately is placed against the front of the infant.- This provides another factor in obtaining a better flt for the leg openings since the legs of an infant child are normally oriented forward.

It will be noted that the diaper is provided with pressure sure sensitive adhesive tabs 36 and 37 for securement in a preferred form. These tabs may be of any well known form or shape and are usually covered with a suitably treated release paper. prior to use. After the diaper is folded around the infant, the release paper isremoved and the exposed end of the pressure sensitive tabs 36 and 37 are adhered to the corresponding opposite corner of the diaper as illustrated in FIG. 5.

In the preferred embodiment, as heretofore described, the lines of isolation 20, 21, 22 and 23 each extend continuously from one edge of the diaper and are curved such that they terminate at the same side edge. This, however, is not a prerequisite as a line of isolation could run continously from one side edge to either an adjoining side edge or an opposite side edge. In fact, in some cases it might be desirable to form a line of isolation parallel to one or both of the end extremities 34 and/or 35 near or at the edge of the absorbent pad for the purpose of containing fluids that have migrated to the end portions of the diaper.

While particular materials have heretofor been described for the manufacture of a preferred form of the diaper, it will be understood that various materials may typically be used including tissue paper, crepe paper, nonwoven fabrics as well as suitable absorptive fillers for the pad such as wadding, cellulosic fluff or airfelt materials in suitable combinations. The backing sheet may be formed from any well known plastic material, e.g., polyethylene, polypropylene or the like, having suitable flexibility and water impervious properties to carry out the desired function of the invention. Thus the selection of materials will be within the skill of the art although in a preferred embodiment materials having the particular characteristics heretofor described will be selected for optimum performance.

While particular embodiments of the invention have been illustrated and described, it will be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention and it is intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

What is claimed as new is:'

1. In a disposable diaper having an absorbent core interposed between a moisture-permeable topsheet and a backing sheet, the improvement comprising:

a. a discontinuity in said absorbent core dividing said absorbent core into separated portions and forming a line of isolation intermediate said seperated portions,

b. the line of isolation extending from one peripheral location to another peripheral location of the absorbent c. said backing sheet being continuous in the area of said line of isolation d. means in cooperation with said absorbent core for maintaining said line of isolation between adjacent separated portions of the absorbent core,

e. said line of isolation between the separated portions of the absorbent core providing a fluid barrier for inhibiting fluid flow in the diaper from a portion on one side of the line of isolation to a portion on the other side of the line of isolation.

2. A disposable diaper as claimed in claim 1 wherein the absorbent core is divided by lines of isolation into a central area, an intermediate lateral area on either side thereof and an outer area adjacent each of said intermediate lateral areas.

3. A disposable diaper as claimed in claim 1 including a plurality of linesof isolation and wherein said means comprises a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.

4. A disposable diaper as claimed in claim 1 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.

5. A disposable diaper as claimed in claim 1 wherein said line of isolation is from about /1' inch to about inch in width.

6. A disposable diaper as claimed in claim 2 including a plurality of lines of isolation and wherein said means is a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.

7. A disposable diaper as claimed in claim 2 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.

8. A disposable diaper as claimed in claim 3 wherein said lines of isolation are from about V4 inch to about inch in width. 1

9. A disposable diaper as claimed in claim 3 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.

10. A disposable diaper as claimed in claim 6 wherein said diaper has a pluraltiy of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge. v

11. In a disposable diaper having an absorbent core interposed between a moisture-permeable topsheet and a backing sheet, an improvement, comprising:

a said absorbentcore being divided into separated portions and having a discontinuity of absorbent material between said portions,

b said discontinuity forming a line of isolation intermediate said separated portions,

c said backing sheet being continuous in the area of said line of isolation, I

d. whereby said line of isolation between the separated portions of the absorbent core provides a fluid barrier for inhibiting fluid flow in the diaper from a portion on one side of the line of isolation to a portion on the other side of the line of isolation.

12. A disposable diaper as claimed in claim 11 wherein the width of the line of isolation is substantially uniform along its length.

13. A diaper as claimed in claim 11 including means in cooperation with said absorbent core for maintaining said line of isolation between adjacent separated portions of the absorbent core.

14. A diaper as claimed in claim 13 wherein the width of the line of isolation is substantially uniform along its length.

15. A diaper as claimed in claim 11 wherein the backing sheet is a water impervious layer.

' UNITED STATES PATENT OFFICE CERTIFICATE OF CQRRECTION Patent No. ,744,4 4 Dated July 10, 1973 Inventor(s) Mar lo S. Marsan It is certified that error appears in the. above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 4, line 8', "16" should read 26-.

Column 5, line 9, "seperated" should read -'-separated--.

Column 5, line 13, add -core-- after hyphenated "absorbent".

' Signed and sealed this 6th day of August 19 7A.

(SEAL)- Attest:

MCCOY 11a. GIBSON, J 0. MARSHALL DANN Attestlng Officer Commissioner of Patents

Claims (14)

  1. 2. A disposable diaper as claimed in claim 1 wherein the absorbent core is divided by lines of isolation into a central area, an intermediate lateral area on either side thereof and an outer area adjacent each of said intermediate lateral areas.
  2. 3. A disposable diaper as claimed in claim 1 including a plurality of lines of isolation and wherein said means comprises a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.
  3. 4. A disposable diaper as claimed in claim 1 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
  4. 5. A disposable diaper as claimed in claim 1 wherein said line of isolation is from about 1/4 inch to about 3/8 inch in width.
  5. 6. A disposable diaper as claimed in claim 2 including a plurality of lines of isolation and wherein said means is a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.
  6. 7. A disposable diaper as claimed in claim 2 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
  7. 8. A disposable diaper as claimed in claim 3 wherein said lines of isolation are from about 1/4 inch to about 3/8 inch in width.
  8. 9. A disposable diaper as claimed in claim 3 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
  9. 10. A disposable diaper as claimed in claim 6 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
  10. 11. In a disposable diaper having an absorbent core interposed between a moisture-permeable topsheet and a backing sheet, an improvement, comprising: a said absorbent core being divided into separated portions and having a discontinuity of absorbent material between said portions, b said discontinuity forming a line of isolation intermediate said separated portions, c said backing sheet being continuous in the area of said line of isolation, d whereby said line of isolation between the separated portions of the absorbent core provides a fluid barrier for inhibiting fluid flow in the diaper from a portion on one side of the line of isolation to a portion on the other side of the line of isolation.
  11. 12. A disposable diaper as claimed in claim 11 wherein the width of the line of isolation is substantially uniform along its length.
  12. 13. A diaper as claimed in claim 11 including means in cooperation with said absorbent core for maintaining said line of isolation between adjacent separated portions of the absorbent core.
  13. 14. A diaper as claimed in claim 13 wherein the width of the line of isolation is substantially uniform along its length.
  14. 15. A diaper as claimed in claim 11 wherein the backing sheet is a water impervious layer.
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Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848595A (en) * 1973-04-26 1974-11-19 Kimberly Clark Co Prefolded diaper with improved leg fit
US3860004A (en) * 1972-10-16 1975-01-14 Paper Converting Machine Co Disposable diaper
US3860003A (en) * 1973-11-21 1975-01-14 Procter & Gamble Contractable side portions for disposable diaper
USB313594I5 (en) * 1972-12-08 1975-01-28
USB437173I5 (en) * 1973-06-25 1975-01-28
US3929134A (en) * 1974-08-29 1975-12-30 Colgate Palmolive Co Absorbent article and method
US4108179A (en) * 1973-09-13 1978-08-22 Colgate-Palmolive Company Disposable diaper
EP0059014A2 (en) * 1981-02-24 1982-09-01 THE PROCTER & GAMBLE COMPANY Disposable absorbent article having an improved liquid containment construction
USRE31922E (en) * 1977-12-20 1985-06-25 Johnson & Johnson Conformable disposable diapers having absorbent panel with bulged side members
US4681579A (en) * 1985-10-11 1987-07-21 The Procter & Gamble Co. Absorbent article having reservoirs
US4695278A (en) * 1985-10-11 1987-09-22 The Procter & Gamble Company Absorbent article having dual cuffs
US4738677A (en) * 1986-10-10 1988-04-19 The Procter & Gamble Company Absorbent article having a containment pocket
US4795454A (en) * 1986-10-10 1989-01-03 The Procter & Gamble Company Absorbent article having leakage-resistant dual cuffs
US4816025A (en) * 1986-10-10 1989-03-28 The Procter & Gamble Company Absorbent article having a containment pocket
US4906243A (en) * 1988-02-02 1990-03-06 Mary Dravland Combination diaper and training pants
US4938755A (en) * 1986-10-10 1990-07-03 The Procter & Gamble Company Absorbent article having a containment pocket
US5021051A (en) * 1989-04-06 1991-06-04 The Procter & Gamble Company Disposable absorbent article having improved barrier leg cuffs
US5413570A (en) * 1984-07-02 1995-05-09 Kimberly-Clark Corporation Diapers with elasticized side pockets
US5415644A (en) * 1984-07-02 1995-05-16 Kimberly-Clark Corporation Diapers with elasticized side pockets
US5454803A (en) * 1989-07-18 1995-10-03 The Procter & Gamble Company Absorbent article having inflected barrier cuffs
US5489282A (en) * 1991-09-11 1996-02-06 Kimberly-Clark Corporation Newborn's growth adjustable absorbent diaper having variable overlapping and non-overlapping ears
US5489283A (en) * 1983-07-05 1996-02-06 The Procter & Gamble Company Shaped sanitary napkin with flaps
US5496428A (en) * 1994-01-07 1996-03-05 The Procter & Gamble Company Process for making an absorbent article having inflected barrier leg cuff
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US5582606A (en) * 1992-12-02 1996-12-10 Kimberly-Clarke Corporation Absorbent article having dual barrier means
US5597437A (en) * 1995-01-12 1997-01-28 Procter & Gamble Zero scrap absorbent core formation process
US5601544A (en) * 1993-12-23 1997-02-11 Kimberly-Clark Corporation Child's training pant with elasticized shaped absorbent and method of making the same
US5662636A (en) * 1994-08-31 1997-09-02 The Procter & Gamble Company Absorbent article having cuffs with unsecured rear distal edges
US5705013A (en) * 1995-02-10 1998-01-06 The Procter & Gamble Company Method for manufacturing extensible side panels for absorbent articles
US5716349A (en) * 1991-07-23 1998-02-10 The Procter & Gamble Company Absorbent article having longitudinal side margins with tucks
US5895382A (en) * 1993-04-26 1999-04-20 Kimberly-Clark Worldwide, Inc. Foreshortened containment flaps in a disposable absorbent article
US6004893A (en) * 1983-07-05 1999-12-21 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6220999B1 (en) 1999-03-19 2001-04-24 Kimberly-Clark Worldwide, Inc. Method and apparatus for forming an apertured pad
US6387084B1 (en) 1992-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US20030225385A1 (en) * 2002-05-28 2003-12-04 Glaug Frank S. Absorbent article with multiple core
US20030225383A1 (en) * 2002-05-28 2003-12-04 Glaug Frank S. Multiple layer absorbent article
EP1413271A2 (en) * 2001-04-23 2004-04-28 Uni-Charm Co., Ltd. UNDERPANTS−TYPE DISPOSABLE WEARING ARTICLE
US6746435B1 (en) 1983-07-05 2004-06-08 The Procter & Gamble Company Shaped sanitary napkin with flaps
US20040210204A1 (en) * 2003-04-18 2004-10-21 Takaaki Shimada Disposable pants-type wearing article
US20040260264A1 (en) * 2003-06-23 2004-12-23 Toshifumi Otsubo Pull-on disposable wearing article
US20050004548A1 (en) * 2002-01-31 2005-01-06 Toshifumi Otsubo Pants-type disposable wearing article
US20050004544A1 (en) * 2002-02-08 2005-01-06 Toshifumi Otsubo Pants-type disposable wearing article
EP1495739A1 (en) * 2002-03-25 2005-01-12 Uni-Charm Co., Ltd. Underpants type disposable diaper
US20050070869A1 (en) * 2002-08-07 2005-03-31 Uni-Charm Co., Ltd. Pull-on disposable wearing article
US20050075618A1 (en) * 2003-01-10 2005-04-07 Yasuhiko Kenmochi Pull-on disposable wearing article
US6902552B2 (en) 1992-09-30 2005-06-07 Kimberly-Clark Worldwide, Inc. Curved sanitary napkin with garment attachment panels
US20050131375A1 (en) * 2002-08-30 2005-06-16 Uni-Charm Co., Ltd. Pull-on disposable diaper
US20050143711A1 (en) * 2002-08-31 2005-06-30 Uni-Charm Co., Ltd. Pull-on disposable diaper
US6955667B1 (en) * 1996-10-23 2005-10-18 Kao Corporation Absorbent article
US20070049895A1 (en) * 2005-08-31 2007-03-01 Kimberly-Clark Worldwide, Inc. Disposable garment with biaxially stretchable inner layer
US20080141839A1 (en) * 2006-12-13 2008-06-19 Van Gompel Paul T Method of manufacturing pleated disposable garment
US20080147025A1 (en) * 2006-12-13 2008-06-19 Van Gompel Paul T Pleated disposable garment
US20080312626A1 (en) * 2001-09-21 2008-12-18 Takao Koyama Disposable diaper
US20090112175A1 (en) * 2007-10-30 2009-04-30 Kofi Ayensu Bissah Absorbent article including an absorbent layer having a plurality of spaced beam elements

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US4062362A (en) * 1975-12-29 1977-12-13 Colgate-Palmolive Company Disposable and self adjustable diapers
JPS6052201B2 (en) * 1976-11-09 1985-11-18 Pijon Kk
WO1992012648A1 (en) * 1991-01-16 1992-08-06 W.L. Gore & Associates, Inc. Waterproof gussetted diaper cover

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US3860004A (en) * 1972-10-16 1975-01-14 Paper Converting Machine Co Disposable diaper
USB313594I5 (en) * 1972-12-08 1975-01-28
US3924626A (en) * 1972-12-08 1975-12-09 Int Paper Co Rectangular disposable diaper having a contoured absorbent pad
US3848595A (en) * 1973-04-26 1974-11-19 Kimberly Clark Co Prefolded diaper with improved leg fit
USB437173I5 (en) * 1973-06-25 1975-01-28
US3924627A (en) * 1973-06-25 1975-12-09 Paper Converting Machine Co Disposable diaper
US4108179A (en) * 1973-09-13 1978-08-22 Colgate-Palmolive Company Disposable diaper
US3860003A (en) * 1973-11-21 1975-01-14 Procter & Gamble Contractable side portions for disposable diaper
US3929134A (en) * 1974-08-29 1975-12-30 Colgate Palmolive Co Absorbent article and method
USRE31922E (en) * 1977-12-20 1985-06-25 Johnson & Johnson Conformable disposable diapers having absorbent panel with bulged side members
EP0059014A3 (en) * 1981-02-24 1982-10-06 The Procter & Gamble Company Disposable absorbent article having an improved liquid containment construction
EP0059014A2 (en) * 1981-02-24 1982-09-01 THE PROCTER & GAMBLE COMPANY Disposable absorbent article having an improved liquid containment construction
US6004893A (en) * 1983-07-05 1999-12-21 The Procter & Gamble Company Shaped sanitary napkin with flaps
US5489283A (en) * 1983-07-05 1996-02-06 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6746435B1 (en) 1983-07-05 2004-06-08 The Procter & Gamble Company Shaped sanitary napkin with flaps
US5599338A (en) * 1984-07-02 1997-02-04 Kimberly-Clark Corporation Diapers with elasticized side pockets
US5415644A (en) * 1984-07-02 1995-05-16 Kimberly-Clark Corporation Diapers with elasticized side pockets
US5413570A (en) * 1984-07-02 1995-05-09 Kimberly-Clark Corporation Diapers with elasticized side pockets
US4681579A (en) * 1985-10-11 1987-07-21 The Procter & Gamble Co. Absorbent article having reservoirs
US4695278A (en) * 1985-10-11 1987-09-22 The Procter & Gamble Company Absorbent article having dual cuffs
US4738677A (en) * 1986-10-10 1988-04-19 The Procter & Gamble Company Absorbent article having a containment pocket
US4938755A (en) * 1986-10-10 1990-07-03 The Procter & Gamble Company Absorbent article having a containment pocket
US4795454A (en) * 1986-10-10 1989-01-03 The Procter & Gamble Company Absorbent article having leakage-resistant dual cuffs
US4816025A (en) * 1986-10-10 1989-03-28 The Procter & Gamble Company Absorbent article having a containment pocket
US4906243A (en) * 1988-02-02 1990-03-06 Mary Dravland Combination diaper and training pants
US5021051A (en) * 1989-04-06 1991-06-04 The Procter & Gamble Company Disposable absorbent article having improved barrier leg cuffs
US5454803A (en) * 1989-07-18 1995-10-03 The Procter & Gamble Company Absorbent article having inflected barrier cuffs
US5716349A (en) * 1991-07-23 1998-02-10 The Procter & Gamble Company Absorbent article having longitudinal side margins with tucks
US5489282A (en) * 1991-09-11 1996-02-06 Kimberly-Clark Corporation Newborn's growth adjustable absorbent diaper having variable overlapping and non-overlapping ears
US6902552B2 (en) 1992-09-30 2005-06-07 Kimberly-Clark Worldwide, Inc. Curved sanitary napkin with garment attachment panels
US6387084B1 (en) 1992-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US7063689B2 (en) 1992-09-30 2006-06-20 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US5582606A (en) * 1992-12-02 1996-12-10 Kimberly-Clarke Corporation Absorbent article having dual barrier means
US5895382A (en) * 1993-04-26 1999-04-20 Kimberly-Clark Worldwide, Inc. Foreshortened containment flaps in a disposable absorbent article
US5601544A (en) * 1993-12-23 1997-02-11 Kimberly-Clark Corporation Child's training pant with elasticized shaped absorbent and method of making the same
US5577540A (en) * 1994-01-07 1996-11-26 The Procter & Gamble Company Absorbent article having inflected barrier cuffs and method for making the same
US5542943A (en) * 1994-01-07 1996-08-06 The Procter & Gamble Company Absorbent article having inflected barrier cuffs and method for making the same
US5496428A (en) * 1994-01-07 1996-03-05 The Procter & Gamble Company Process for making an absorbent article having inflected barrier leg cuff
US5662636A (en) * 1994-08-31 1997-09-02 The Procter & Gamble Company Absorbent article having cuffs with unsecured rear distal edges
US5597437A (en) * 1995-01-12 1997-01-28 Procter & Gamble Zero scrap absorbent core formation process
US5695846A (en) * 1995-01-12 1997-12-09 The Procter & Gamble Company Zero scrap absorbent core formation process and products derived from web-based absorbent materials
US5705013A (en) * 1995-02-10 1998-01-06 The Procter & Gamble Company Method for manufacturing extensible side panels for absorbent articles
EP0740929A2 (en) 1995-04-03 1996-11-06 McNEIL-PPC, Inc. Multiple folded side barriers for improved leakage protection in an absorbent product
US6955667B1 (en) * 1996-10-23 2005-10-18 Kao Corporation Absorbent article
US6454690B2 (en) 1999-03-19 2002-09-24 Kimberly-Clark Worldwide, Inc. Method and apparatus for forming an apertured pad
US6220999B1 (en) 1999-03-19 2001-04-24 Kimberly-Clark Worldwide, Inc. Method and apparatus for forming an apertured pad
EP1413271A2 (en) * 2001-04-23 2004-04-28 Uni-Charm Co., Ltd. UNDERPANTS−TYPE DISPOSABLE WEARING ARTICLE
US20040133178A1 (en) * 2001-04-23 2004-07-08 Toshifumi Otsubo Underpants-type disposable wearing article
US7530971B2 (en) 2001-04-23 2009-05-12 Uni-Charm Corporation Disposable pull-on wearing article
US7172583B2 (en) 2001-04-23 2007-02-06 Uni-Charm Corporation Disposable pull-on wearing article
US20070016157A1 (en) * 2001-04-23 2007-01-18 Toshifumi Otsubo Disposable Pull-On Wearing Article
EP1413271A4 (en) * 2001-04-23 2005-04-06 Uni Charm Corp Underpants-type disposable wearing article
US20080312626A1 (en) * 2001-09-21 2008-12-18 Takao Koyama Disposable diaper
US7938814B2 (en) 2001-09-21 2011-05-10 Kao Corporation Disposable diaper
US20050004548A1 (en) * 2002-01-31 2005-01-06 Toshifumi Otsubo Pants-type disposable wearing article
US7220251B2 (en) * 2002-01-31 2007-05-22 Uni-Charm Co., Ltd. Pants-type disposable wearing article
US20050004544A1 (en) * 2002-02-08 2005-01-06 Toshifumi Otsubo Pants-type disposable wearing article
US7112189B2 (en) * 2002-02-08 2006-09-26 Uni-Charm Co., Ltd. Pants-type disposable wearing article
US7207978B2 (en) * 2002-03-25 2007-04-24 Uni-Charm Co., Ltd. Pull-on disposable diaper
EP1495739A1 (en) * 2002-03-25 2005-01-12 Uni-Charm Co., Ltd. Underpants type disposable diaper
EP1495739A4 (en) * 2002-03-25 2009-11-11 Uni Charm Corp Underpants type disposable diaper
US20050038404A1 (en) * 2002-03-25 2005-02-17 Uni-Charm Co., Ltd. Pull-on disposable diaper
US20030225383A1 (en) * 2002-05-28 2003-12-04 Glaug Frank S. Multiple layer absorbent article
US7166094B2 (en) 2002-05-28 2007-01-23 Tyco Healthcare Retail Services Ag Multiple layer absorbent article
US20030225385A1 (en) * 2002-05-28 2003-12-04 Glaug Frank S. Absorbent article with multiple core
US20050070869A1 (en) * 2002-08-07 2005-03-31 Uni-Charm Co., Ltd. Pull-on disposable wearing article
US7147630B2 (en) * 2002-08-07 2006-12-12 Uni-Charm Co., Ltd. Pull-on disposable wearing article
US20050131375A1 (en) * 2002-08-30 2005-06-16 Uni-Charm Co., Ltd. Pull-on disposable diaper
US7226437B2 (en) 2002-08-30 2007-06-05 Uni-Charm Co., Ltd. Pull-on disposable diaper
US20050143711A1 (en) * 2002-08-31 2005-06-30 Uni-Charm Co., Ltd. Pull-on disposable diaper
US7329244B2 (en) * 2002-08-31 2008-02-12 Uni-Charm Co., Ltd. Pull-on disposable diaper
US20050075618A1 (en) * 2003-01-10 2005-04-07 Yasuhiko Kenmochi Pull-on disposable wearing article
US7588561B2 (en) 2003-01-10 2009-09-15 Uni-Charm Corporation Pull-on disposable wearing article with tapered folding guide lines and tucking zones
US7326193B2 (en) 2003-04-18 2008-02-05 Uni-Charm Corporation Disposable pants-type wearing article
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US20040210204A1 (en) * 2003-04-18 2004-10-21 Takaaki Shimada Disposable pants-type wearing article
EP1616544A1 (en) * 2003-04-18 2006-01-18 Uni-Charm Co., Ltd. Disposable panty type wearing article
US20040260264A1 (en) * 2003-06-23 2004-12-23 Toshifumi Otsubo Pull-on disposable wearing article
US7192422B2 (en) * 2003-06-23 2007-03-20 Uni-Charm Corporation Pull-on disposable wearing article
US20070049895A1 (en) * 2005-08-31 2007-03-01 Kimberly-Clark Worldwide, Inc. Disposable garment with biaxially stretchable inner layer
US7785309B2 (en) 2005-08-31 2010-08-31 Kimberly-Clark Worldwide, Inc. Disposable garment with biaxially stretchable inner layer
US20080147025A1 (en) * 2006-12-13 2008-06-19 Van Gompel Paul T Pleated disposable garment
US20080141839A1 (en) * 2006-12-13 2008-06-19 Van Gompel Paul T Method of manufacturing pleated disposable garment
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Also Published As

Publication number Publication date Type
GB1343708A (en) 1974-01-16 application
BE769703A (en) 1972-01-10 grant
DE2134176A1 (en) 1972-01-20 application
FI51264B (en) 1976-08-31 application
ES170487Y (en) 1977-03-16 grant
CA951453A (en) 1974-07-23 grant
BE769703A1 (en) grant
NL7109568A (en) 1972-01-12 application
ES170487U (en) 1971-11-01 application
FR2100461A5 (en) 1972-03-17 application
CA951453A1 (en) grant
FI51264C (en) 1976-12-10 grant

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