WO1998056327A1 - Couche ayant une barriere transversale extensible - Google Patents

Couche ayant une barriere transversale extensible Download PDF

Info

Publication number
WO1998056327A1
WO1998056327A1 PCT/US1998/011691 US9811691W WO9856327A1 WO 1998056327 A1 WO1998056327 A1 WO 1998056327A1 US 9811691 W US9811691 W US 9811691W WO 9856327 A1 WO9856327 A1 WO 9856327A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaper
barrier
topsheet
transverse
fecal material
Prior art date
Application number
PCT/US1998/011691
Other languages
English (en)
Inventor
Mary Elaine Freeland
Patrick Jay Allen
Donald Carroll Roe
Original Assignee
The Procter & Gamble Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to KR19997011627A priority Critical patent/KR20010013617A/fr
Priority to CA002293626A priority patent/CA2293626A1/fr
Priority to EP98926358A priority patent/EP0988013A1/fr
Priority to JP11502963A priority patent/JP2000513638A/ja
Priority to AU78212/98A priority patent/AU7821298A/en
Publication of WO1998056327A1 publication Critical patent/WO1998056327A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity

Definitions

  • the present invention relates to disposable absorbent articles, and more particularly to disposable absorbent articles, such as diapers, having a transverse partition which both minimizes the migration of fecal material deposited on the disposable absorbent article, and which accommodates the receipt and migration of fecal material.
  • Disposable absorbent articles such as diapers, are well known in the art. Disposable absorbent articles retain and absorb body exudates, such as urine and fecal material deposited thereon.
  • Fecal material has the undesirable proclivities of smearing onto the wearer's skin, causing epidermal irritation and complicating the task of cleaning the wearer when the soiled diaper or other disposable absorbent article is removed.
  • a barrier disposed below the topsheet cannot be easily joined to longitudinally extending barrier leg cuffs, which, as are well known in the art, minimize leakage from the diaper.
  • fecal material which is channeled towards transverse migration by the barrier may be transported to the perimeter of the diaper and breach the perimeter, causing leakage.
  • transverse barrier is preferably rearwardly angled, i.e., angled towards the rear waist margin of the diaper.
  • a transverse partition which makes an acute angle of 45 to 85 degrees with the plane of the topsheet has been found to be particularly effective, as disclosed in commonly assigned U.S. Patent Application Serial No. 08/664,603, filed June 18, 1996, Issue Batch No. J78, the disclosure of which is incorporated herein by reference.
  • transverse barrier with a rearward angle does not necessarily provide the optimum arrangement for accommodating fecal material deposited on the diaper.
  • the transverse barrier preferably expands, to accommodate the presence and volume of the fecal material. If the transverse barrier does not expand, a damming effect may occur. The volume of the damming fecal material is constant. If the volume is too great, the fecal material may build up and breach the top of the transverse barrier. If the fecal material crosses the transverse barrier, it typically smears the wearer's genitals - making cleanup more difficult.
  • a disposable absorbent article such as a diaper, having a transverse barrier which limits the migration of fecal material. It is further an object of this invention to provide a disposable absorbent article having such a transverse barrier which accommodates the volume of fecal material deposited on the diaper and which contacts the transverse barrier.
  • the present invention comprises a disposable absorbent article, such as a diaper.
  • the article has a longitudinal axis and a lateral axis orthogonal thereto.
  • the longitudinal and lateral axes define the plane of the diaper.
  • the diaper has a Z-direction orthogonal to the plane of the diaper and orthogonal to the plane defined by the longitudinal and lateral axes of the diaper.
  • the diaper further has a periphery defined by a front waist margin, a rear waist margin, and two longitudinal side margins connecting the front and rear waist margins.
  • the diaper further comprises a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, an absorbent core intermediate the topsheet and the backsheet, and a pair of upstanding barrier leg cuffs.
  • Each barrier leg cuff extends outwardly from a proximal end joined to the topsheet to a distal end spaced from the proximal end.
  • the barrier leg cuffs are generally longitudinally oriented.
  • the diaper further comprises a laterally oriented transverse barrier.
  • the transverse barrier is joined to the topsheet at a proximal end and extends outwardly therefrom.
  • the transverse barrier is further joined to each of the barrier leg cuffs.
  • the diaper has a fecal material containing volume.
  • the fecal material containing volume is defined by and contained within the proximal and distal ends of the transverse barrier and the barrier leg cuffs.
  • the fecal material containing volume is increasable upon the deposition of fecal material therein and which intercepts the transverse barrier.
  • the transverse barrier may be extensible, whereby the fecal material containing volume is increasable upon the receipt of fecal material therein.
  • the transverse barrier may be elastically extensible.
  • the transverse barrier may comprise an elastic panel.
  • the panel may be elastically extensible in the longitudinal direction, the lateral direction, or bilaterally extensible.
  • the elasticity may be provided by a series of elastic strands.
  • the extensibility need not be elastic, but may, for example, be provided by pleats having releasable frangible bonds. The bonds are broken upon receipt of or pressure due to the presence of fecal material. Any such embodiment is sufficient, so long as the fecal material containing volume is increasable upon receipt of fecal material therein, and preferably which does increase in response to the presence of fecal material contacting the transverse barrier.
  • Figure 1 is a top plan view of the disposable absorbent article according to the present invention shown partially in cutaway and having no elastic induced contraction.
  • Figure 2 is an offset vertical sectional view taken along line 2-2 of Fig. 1.
  • Figure 3 is a fragmentary instant vertical sectional view taken along line 3-3 of Fig. 1.
  • Figure 4 is a fragmentary instant vertical sectional view, similar to that of Fig. 3 illustrating the effect of the presence of fecal material within the fecal material containing volume.
  • Figure 5 is a schematic perspective view of the portion of the diaper shown in Fig. 3, illustrating the fecal material containing volume.
  • Figure 6 is a frontal elevational view of a transverse partition having an extensible central tri-section and inextensible outboard trisections.
  • Figure 7 is a frontal elevational view of a transverse partition having an extensible central tri-section which tapers to a lesser width as the proximal edge of the transverse partition is approached.
  • absorbent article refers to devices which absorb and contain body exudates, and, more specifically, refers to devices which are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body.
  • dispenser is used herein to describe absorbent articles which are not intended to be laundered or otherwise restored or reused as an absorbent article (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).
  • a "unitary” absorbent article refers to absorbent articles which are formed of separate parts united together to form a coordinated entity so that they do not require separate manipulative parts like a separate holder and liner.
  • a preferred embodiment of an absorbent article of the present invention is the unitary disposable absorbent article, diaper 20, shown in Figure 1.
  • diaper refers to an absorbent article generally worn by infants or incontinent persons about the lower torso of the wearer. It should be understood, however, that the present invention is also applicable to other absorbent articles such as incontinent briefs, incontinent undergarments, diaper holders and liners, certain feminine hygiene garments, and the like.
  • FIG 1 is a plan view of the diaper 20 of the present invention in its flat- out, uncontracted state (i.e., with elastic induced contraction pulled out) with portions of the structure being cut-away to more clearly show the construction of the diaper 20 and with the portion of the diaper 20 which faces or contacts the wearer, the inner surface, oriented towards the viewer.
  • the diaper 20 preferably comprises a liquid pervious topsheet 24; a liquid impervious backsheet 26 joined with the topsheet 24; an absorbent core 28 positioned between the topsheet 24 and the backsheet 26; elasticized barrier leg cuffs 32; a fastening system 36 generally multiply designated as 36; and an upstanding transverse partition 38.
  • the topsheet 24 of the diaper 20 has an outwardly oriented body facing surface which faces (and usually contacts) the wearer while the diaper 20 is in use and a core facing surface opposed to the body facing surface.
  • the body facing surface of the topsheet 24 of the diaper 20 comprises that portion of the diaper 20 which is positioned adjacent the wearer's body during use (i.e., the inner surface generally is formed by both at least a portion of the topsheet 24 and other components joined to the topsheet 24).
  • the diaper 20 further has a first waist region 31 oriented towards the front of the wearer while the diaper 20 is in use, a second waist region 33 longitudinally opposite the first waist region 31 , a crotch region 35 positioned between the first waist region 31 and the second waist region 33, and a periphery which is defined by the outer edges of the diaper 20.
  • the diaper 20 has a longitudinal centerline L-L which divides the diaper 20 into left and right halves, and which divides the standing wearer into left and right body halves.
  • the diaper 20 further comprises a transverse centerline T-T orthogonal to the longitudinal centerline L-L which divides the diaper 20 into a front portion and a rear portion.
  • the transverse centerline T-T is midway between the front and rear longitudinal extremities of the diaper chassis. Orthogonal to the mutually perpendicular longitudinal centerline L-L and transverse centerline T-T, is a Z-direction axis, which extends outwardly from the plane of the diaper 20.
  • a component of the diaper 20 is considered to be transversely oriented, and hence "transverse” if such component forms an angle of + 45 degrees or less with the transverse centerline T-T.
  • a component is considered to be longitudinally oriented, and hence “longitudinal” if such component forms an angle of + 45 degrees or less with the longitudinal centerline L-L.
  • Figure 1 shows a preferred embodiment of the diaper 20 in which the topsheet 24 and the backsheet 26 have length and width dimensions generally larger than those of the absorbent core 28.
  • the topsheet 24 and the backsheet 26 extend beyond the edges of the absorbent core 28 to thereby form the periphery of the diaper 20.
  • the topsheet 24, the backsheet 26, and the absorbent core 28 may be assembled in a variety of well known configurations, preferred diaper configurations are described generally in U.S. Patent 3,860,003 entitled "Contractable Side Portions for Disposable Diaper" which issued to Kenneth B. Buell on January 14, 1975, which is incorporated herein by reference.
  • the absorbent core 28 may be any absorbent means which is generally compressible, conformable, non-irritating to the wearer's skin, and capable of absorbing and retaining liquids such as urine and other certain body exudates. As shown in Figure 1 , the absorbent core 28 has a garment surface, a body surface, side edges, and waist edges.
  • the absorbent core 28 may be manufactured in a wide variety of sizes and shapes (e.g., rectangular, hourglass, "T"-shaped, asymmetric, etc.) and from a wide variety of liquid- absorbent materials commonly used in disposable diapers and other absorbent articles such as comminuted wood pulp which is generally referred to as airfelt.
  • absorbent materials examples include creped cellulose wadding; meltblown polymers including coform; chemically stiffened, modified or cross-linked cellulosic fibers; tissue including tissue wraps and tissue laminates; absorbent foams; absorbent sponges; superabsorbent polymers; absorbent gelling materials; or any equivalent material or combinations of materials.
  • the configuration and construction of the absorbent core 28 may also be varied (e.g., the absorbent core 28 may have varying caliper zones, a hydrophilic gradient, a superabsorbent gradient, or lower average density and lower average basis weight acquisition zones; or may comprise one or more layers or structures).
  • the total absorbent capacity of the absorbent core 28 should, however, be compatible with the design loading and the intended use of the diaper 20.
  • the size and absorbent capacity of the absorbent core 28 may be varied to accommodate wearers ranging from infants through adults.
  • Exemplary absorbent structures for use as the absorbent core 28 are described in U.S. Patent 4,610,678 entitled “High-Density Absorbent Structures” issued to Weisman et al. on September 9, 1986; U.S. Patent 4,673,402 entitled “Absorbent Articles With Dual-Layered Cores” issued to Weisman et al. on June 16, 1987; U.S. Patent 4,888,231 entitled “Absorbent Core Having A Dusting Layer” issued to Angstadt on December 19, 1989; and U.S. Patent 4,834,735, entitled “High Density Absorbent Members Having Lower Density and Lower Basis Weight Acquisition Zones", issued to Alemany et al. on May 30, 1989. Each of these patents are incorporated herein by reference.
  • the backsheet 26 is positioned adjacent the garment surface of the absorbent core 28 and is preferably joined thereto by attachment means (not shown) such as those well known in the art.
  • the backsheet 26 may be secured to the absorbent core 28 by a uniform continuous layer of adhesive, a patterned layer of adhesive, or an array of separate lines, spirals, or spots of adhesive.
  • Adhesives which have been found to be satisfactory are manufactured by H. B. Fuller Company of St. Paul, Minnesota and are marketed as HL-1258.
  • the attachment means will preferably comprise an open pattern network of filaments of adhesive as is disclosed in U.S. Patent 4,573,986 entitled "Disposable Waste-Containment Garment", which issued to Minetola et al.
  • attachment means may comprise heat bonds, pressure bonds, ultrasonic bonds, dynamic mechanical bonds, or any other suitable attachment means or combinations of these attachment means as are known in the art.
  • the backsheet 26 is impervious to liquids (e.g., urine) and is preferably manufactured from a thin plastic film, although other flexible liquid impervious materials may also be used.
  • the term "flexible” refers to materials which are compliant and will readily conform to the general shape and contours of the human body.
  • the backsheet 26 prevents the exudates absorbed and contained in the absorbent core 28 from wetting articles which contact the diaper 20 such as bedsheets and undergarments.
  • the backsheet 26 may thus comprise a woven or nonwoven material, polymeric films such as thermoplastic films of polyethylene or polypropylene, or composite materials such as a film-coated nonwoven material.
  • the backsheet 26 is a thermoplastic film having a thickness of from about 0.012 mm (0.5 mil) to about 0.051 mm (2.0 mils).
  • Particularly preferred materials for the backsheet 26 include RR8220 blown films and RR5475 cast films as manufactured by Tredegar Industries, Inc. of Terre Haute, IN.
  • the backsheet 26 is preferably embossed and/or matte finished to provide a more clothlike appearance. Further, the backsheet 26 may permit vapors to escape from the absorbent core 28 (i.e., breathable) while still preventing exudates from passing through the backsheet 26.
  • the topsheet 24 is positioned adjacent the body surface of the absorbent core 28 and is preferably at least partially peripherally joined thereto and to the backsheet 26 by attachment means (not shown) such as those well known in the art. Suitable attachment means are described with respect to joining the backsheet 26 to the absorbent core 28.
  • the term "joined” encompasses configurations whereby an element is directly secured to the other element by affixing the element directly to the other element, and configurations whereby the element is indirectly secured to the other element by affixing the element to intermediate member(s) which in turn are affixed to the other element.
  • the topsheet 24 and the backsheet 26 are joined directly to each other in the diaper periphery and are indirectly joined together as a result of their joinder to the absorbent core 28 by suitable attachment means (not shown).
  • the topsheet 24 is compliant, soft feeling, and non-irritating to the wearer's skin. Further, the topsheet 24 is liquid pervious permitting liquids (e.g., urine) to readily penetrate through its thickness.
  • a suitable topsheet may be manufactured from a wide range of materials, such as porous foams; reticulated foams; apertured plastic films; or woven or nonwoven webs of natural fibers (e.g., wood or cotton fibers), synthetic fibers (e.g., polyester, polyethylene, or polypropylene fibers), or a combination of natural and synthetic fibers.
  • the topsheet 24 is made of a hydrophobic material to isolate the wearer's skin from liquids contained in the absorbent core 28.
  • the topsheet 24 may be a nonwoven web of fibers spunbonded, carded, wet-laid, meltblown, hydroentangled, combinations of the above, or the like.
  • a preferred topsheet is carded and thermally bonded by means well known to those skilled in the fabrics art.
  • a preferred topsheet comprises a web of staple length polypropylene fibers such as is manufactured by Veratec, Inc., a Division of International Paper Company, of Walpole, Massachusetts under the designation P-8.
  • the diaper 20 preferably further comprises elasticized barrier leg cuffs 32 for providing improved containment of liquids and other body exudates.
  • Each elasticized barrier leg cuff 32 may comprise several different embodiments for reducing the leakage of body exudates from the leg regions of the diaper 20.
  • the transverse partition 38 Spanning the transverse distance between the barrier leg cuffs 32 is an upstanding transverse partition 38.
  • the transverse partition 38 is disposed on the body facing surface of the topsheet 24 and extending outwardly therefrom to present an abrupt discontinuity in the body facing surface of the topsheet 24.
  • the transverse partition 38 is generally straight, rectilinear, transverse and preferably parallel to the transverse centerline T-T of the diaper 20. If desired, the transverse pattern 38 may even be coincident with the transverse centerline T-T of the diaper 20.
  • the transverse partition 38 obstructs the longitudinal migration of fecal material deposited in the rear portion of the diaper 20 towards the front portion of the diaper 20.
  • the upstanding partition 38 connects the barrier leg cuffs 32, forming an H-shape.
  • This arrangement is highly preferred because it prevents seepage of fecal material around the edges of the transverse partition 38 and contains the fecal material in the rear portion of the diaper 20.
  • the transverse partition 38 has a proximal edge which is preferably joined to the topsheet 24, and particularly the body facing surface thereof, by adhesive, by autogeneous bonding, such as is disclosed in commonly assigned U.S. Patent 4,854,984 issued to Ball et al, which patent is incorporated herein by reference, or by other joining means, as are well known in the art.
  • the transverse partition 38 extends outwardly from the plane of the topsheet 24 with a vector component in the Z-direction to a distal edge.
  • transverse partition 38 be upstanding and rise above the plane of the topsheet 24 to an effective height H sufficient to present an abrupt discontinuity to obstruct the longitudinal movement of fecal material while the diaper 20 is worn. It is to be recognized that if the topsheet 24 has wrinkles, rugosities, undulations, or other deviations from planarity, these should be taken into account at the position of the transverse partition 38 when determining its effective height H. Otherwise such deviations from planarity in the topsheet 24 may diminish the effective height H of the distal edge of the partition 38 above the topsheet 24, and not sufficiently obstruct the flow of fecal material.
  • the transverse partition 38 is preferably not orthogonal to the plane of the topsheet 24, but instead is disposed in angular relationship therewith so that the distal edge of the upstanding transverse partition 38 is oriented towards the rear portion and the rear waist margin 33 of the diaper 20.
  • This arrangement provides the advantage that the pressure of the fecal material helps seal the transverse partition 38 against the wearer's body, minimizing the leakage of fecal material across the transverse partition 38. This arrangement further minimizes the vertical forces necessary to maintain the transverse partition 38 in contact with the body of the wearer.
  • the transverse partition 38 has two opposed faces, a front facing surface and a rearward facing surface.
  • the rearward facing surface forms an acute angle Z with the body facing surface of the topsheet 24.
  • the acute angle Z is preferably from 45 to 85 degrees, and more preferably from 55 to 80 degrees, and most preferably from 65 to 75 degrees.
  • the acute angle Z is measured in accordance with commonly assigned U.S. Patent Application Serial No. 08/664,603 filed June 18, 1996, Issue Batch No. J78, the disclosure of which is incorporated herein by reference.
  • the transverse partition 38 may be made of a water pervious material, but is preferably made of a liquid impermeable material.
  • the liquid impermeable material prevents (or minimizes the amount of) runny fecal material reaching the genitalia of the wearer.
  • Nonwoven materials such as those commonly used to form the barrier leg cuffs 32, have been found to be particularly suitable in the transverse partition 38.
  • Other suitable materials for the transverse partition 38 include foams, formed films, etc.
  • a suitable liquid impermeable material, particularly a liquid impermeable nonwoven material for the transverse partition 38 may be obtained from the Veratec Corporation of Walpole, Massachusetts as a hydrophobic P-8 material having a basis weight of at least 20 grams per square meter. If desired, a high basis weight spun/meltblown/spun layered web made of polypropylene or polyethylene as is available from Fiberweb Corporation under the name Eclipse could be used. Alternatively, Veratec Everspun nonwoven material may be used.
  • a particularly preferred transverse partition 38 for female wearers allows fluids, such as urine, to permeate the barrier from the front to the rear, so that such fluid cannot sit on top of the transverse partition 38 more than necessary and irritate the skin.
  • a transverse partition 38 is preferably impervious in the direction from the rear to the front of the diaper 20, for the same reason.
  • Such a material may be provided as a formed film made according to commonly assigned U.S. Patent 3,929,135 issued Dec. 30, 1975 to Thompson, the disclosure of which is incorporated herein by reference.
  • a nonwoven material may be laminated to the front of the formed film.
  • spacers may be added to the distal edge of the transverse partition 38 to locally increase its effective height H.
  • the spacers may be made and disposed on the transverse partition 38 according to commonly assigned U.S. Patent 5,554,142 issued September 10, 1996 to Dreier et al., the disclosure of which is incorporated herein by reference.
  • the transverse barrier may be generally taut and define a flat plane as shown.
  • the transverse barrier may expand, preferably to a convex configuration as shown in Figure 4. This expansion may be thought of as an increase in the longitudinal dimension of the transverse barrier.
  • the longitudinal dimension of the transverse barrier is measured from the proximal edge of the transverse barrier to the distal edge of the transverse barrier, coincident the longitudinal centerline L-L of the diaper 20.
  • the configuration of the transverse barrier as it expands to accommodate the fecal material will likely vary from that shown in Figure 4.
  • the transverse barrier may bow to a concave configuration, or otherwise generally increase in the transverse dimension.
  • the important consideration is not the exact configuration of the transverse barrier in response to pressure of fecal material thereagainst. Instead, it is only important that the presence and volume of the fecal material be accommodated so that the fecal material can move forward in the longitudinal direction without building up in the Z-direction against the transverse barrier and crossing the top of the transverse barrier.
  • the volume of the fecal material can be accounted for without allowing it to breach the top of the transverse barrier.
  • the disposable article according to the present invention may be thought of as having a fecal material containing volume 50.
  • a fecal material containing volume 50 There is both an initial fecal material containing volume 50, i.e., that presented by the diaper 20 prior to being disposed on a wearer and soiled, and a secondary fecal material containing volume 50, i.e., that which occurs after the introduction of fecal material against the transverse barrier.
  • the fecal material containing volume 50 is defined as follows. In cross section the fecal material containing volume 50 is generally triangular and may be a right triangle.
  • the cross section of the fecal material containing volume 50 is defined by the proximal and distal ends of the transverse barrier, and an imaginary line from the distal end of the transverse barrier perpendicular to the outwardly facing surface of the topsheet 24. If the transverse barrier is not uniform in the transverse direction, the cross section of the fecal material containing volume 50 is measured at the longitudinal centerline L-L of the disposable article.
  • the cross section of the fecal material containing volume 50 may be thought of as a right triangle.
  • One leg 51 represents the imaginary line from the distal end of the transverse barrier to the outwardly oriented surface of the topsheet 24.
  • the other leg 52 is taken from the rearwardly facing surface of the proximal end of the transverse barrier along the outwardly oriented surface of the topsheet 24 to the point where the imaginary line, discussed above, intersects the topsheet 24.
  • the hypotenuse of the right triangle is the rearwardly facing surface of the transverse barrier.
  • the fecal material containing volume 50 is further defined by the inwardly facing surfaces, i.e., those surfaces oriented towards the longitudinal centerline L-L, of each of the barrier leg cuffs 32.
  • the fecal material containing volume 50 is the product of the transverse distance between the inwardly oriented surfaces of the barrier leg cuffs 32, and the cross sectional area discussed above.
  • the transverse distance between the barrier leg cuffs 32 is measured coincident the outwardly facing surface of the topsheet 24.
  • this fecal material containing volume 50 which is both initially defined and, which has a secondary volume greater than the initial volume in order to accommodate fecal material.
  • the first fecal material containing volume 50 is measured with the diaper 20 in the flat, uncontracted state of Figure 1 and prior to being disposed on the wearer.
  • the secondary fecal material containing volume 50 is likewise measured in the flat, uncontracted state, but after the fecal material is deposited within the volume and contacts the transverse barrier.
  • the transverse partition 38 may comprise an elastic panel.
  • the transverse barrier may comprise an elastic panel and flaccid material. If flaccid material is utilized, preferably it is juxtaposed with the proximal end of the transverse barrier. The flaccid material allows for expansion of the transverse partition 38 upon even minor pressure caused by contact with the fecal material.
  • the elastic panel is preferably elastically extensible in the longitudinal direction, i.e., is extensible towards the front waist margin.
  • the elastic panel comprising the transverse barrier may be elastically extensible in the lateral direction.
  • the elastic panel may be bilaterally extensible.
  • a particularly preferred material is a web material exhibiting an elastic-like behavior and having molecular-level deformation in a first region and geometric deformation in a second region. Such a material may be made according to commonly assigned U.S. Patent 5,518,801 issued May 21 , 1996 to Chappell et al., the disclosure of which is incorporated herein by reference.
  • extensibility may be imparted to the transverse barrier through the use of multiple elastic strands.
  • the elastic strands are generally parallel. Suitable material for the elastic strands are well known in the art.
  • the elastic strands may be attached to the transverse barrier by adhesive, heat shrinking, or any of the other means well known in the art.
  • Multiple elastic strands provide the benefit over an elastic panel of providing for variable levels of extensibility, i.e., different spring rates, at different locations on the transverse partition 38.
  • the increase in fecal material containing volume 50 upon receipt of fecal material is from about 5 to about 50 percent of its original volume.
  • the fecal material containing volume 50 preferably has a volume of at least 30, more preferably at least 50, and most preferably at least 80 cubic centimeters.
  • the transverse partition 38 may comprise three tri- sections: two outer tri-sections 60 and a central tri-section 62.
  • the central tri- section 62 may be extensible, and more preferably may be elastically extensible. This arrangement provides the advantage that leakage over the top of the transverse partition 38 is generally minimized, due to the stiffness imparted by the inextensible outboard tri-section 60.
  • the tri-sections need not be equal in width.
  • the elastic central tri-section 62 may taper from a greater width at the distal edge of the transverse partition 38 to a vertex at the proximal edge of the transverse partition 38.
  • the vertex of the central tri-section 62 need not be coincident the proximal edge of the central tri-section 62, but may be disposed between the proximal and distal edges of the transverse partition 38.
  • the extensible central tri-section 62 of the embodiment of Figure 6 need not converge to a vertex, but may merely taper from a greater width at the distal edge of the transverse partition 38 to a lesser width at the proximal edge of the transverse partition 38.
  • the embodiment of Figure 6 provides the advantage that there is less distortion at the distal edge of the transverse partition 38 caused by movement of the barrier leg cuffs 32 of the diaper 20. Furthermore, this arrangement tends to decouple movements from the core 28 from the movements of the barrier leg cuffs 32 of the diaper 20. By decoupling movements between the core 28/leg cuffs 32 and the distal edge of the transverse partition 38, leakage when fecal material is present is reduced.

Abstract

Couche jetable ayant une barrière transversale. Ladite barrière transversale est extensible de sorte qu'elle s'adapte à la présence de matières fécales déposées dans la partie arrière de ladite couche. Lorsque la barrière transversale est étirée, le volume de matière fécale est recueilli sans que ladite barrière ne soit percée et que la matière fécale ne s'étale dans la partie avant de la couche, sur la peau de l'utilisateur.
PCT/US1998/011691 1997-06-10 1998-06-05 Couche ayant une barriere transversale extensible WO1998056327A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR19997011627A KR20010013617A (fr) 1997-06-10 1998-06-05 Couche ayant une barriere transversale extensible
CA002293626A CA2293626A1 (fr) 1997-06-10 1998-06-05 Couche ayant une barriere transversale extensible
EP98926358A EP0988013A1 (fr) 1997-06-10 1998-06-05 Couche ayant une barriere transversale extensible
JP11502963A JP2000513638A (ja) 1997-06-10 1998-06-05 延伸性横断方向バリヤーを有するおむつ
AU78212/98A AU7821298A (en) 1997-06-10 1998-06-05 Diaper having extensible transverse barrier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87249597A 1997-06-10 1997-06-10
US08/872,495 1997-06-10

Publications (1)

Publication Number Publication Date
WO1998056327A1 true WO1998056327A1 (fr) 1998-12-17

Family

ID=25359682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/011691 WO1998056327A1 (fr) 1997-06-10 1998-06-05 Couche ayant une barriere transversale extensible

Country Status (6)

Country Link
EP (1) EP0988013A1 (fr)
JP (1) JP2000513638A (fr)
KR (1) KR20010013617A (fr)
AU (1) AU7821298A (fr)
CA (1) CA2293626A1 (fr)
WO (1) WO1998056327A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3097896A1 (fr) 2015-05-28 2016-11-30 The Procter and Gamble Company Procédé de fabrication et de commercialisation d'articles d'hygiène absorbants personnalisés
US11134925B2 (en) 2016-03-01 2021-10-05 The Procter & Gamble Company Diaper adapted for collection of urine sample from an infant
US11135104B2 (en) 2017-06-27 2021-10-05 The Procter & Gamble Company Diaper product adapted for collection of exudate sample from an infant
US11246571B2 (en) 2017-06-27 2022-02-15 The Procter & Gamble Company Configurable absorbent articles having improved bodily exudate separation and sampling
US11298276B2 (en) 2016-03-01 2022-04-12 The Procter & Gamble Company Diaper adapted for collection of uncontaminated and intact stool sample from an infant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3156818U (ja) * 2009-11-02 2010-01-21 和代 小川 使い捨ておむつ

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610678A (en) 1983-06-24 1986-09-09 Weisman Paul T High-density absorbent structures
US4662877A (en) 1984-08-02 1987-05-05 Johnson & Johnson Shaped disposal diaper
US4673402A (en) 1985-05-15 1987-06-16 The Procter & Gamble Company Absorbent articles with dual-layered cores
US4892536A (en) 1988-09-02 1990-01-09 The Procter & Gamble Company Absorbent article having elastic strands
US4968312A (en) 1988-06-03 1990-11-06 Sarbuland Khan Disposable fecal compartmenting diaper
US4990147A (en) 1988-09-02 1991-02-05 The Procter & Gamble Company Absorbent article with elastic liner for waste material isolation
US5062840A (en) 1989-05-22 1991-11-05 Holt John N Disposable diapers
WO1994014395A1 (fr) * 1992-12-18 1994-07-07 The Procter & Gamble Company Article absorbant comprenant une separation transversale et verticale
WO1996016623A1 (fr) * 1994-11-30 1996-06-06 The Procter & Gamble Company Article absorbant a plusieurs hauteurs utiles pourvu d'une cloison transversale
US5653703A (en) * 1994-11-30 1997-08-05 The Procter & Gamble Company Absorbent article having angular upstanding transverse partition

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610678A (en) 1983-06-24 1986-09-09 Weisman Paul T High-density absorbent structures
US4662877A (en) 1984-08-02 1987-05-05 Johnson & Johnson Shaped disposal diaper
US4673402A (en) 1985-05-15 1987-06-16 The Procter & Gamble Company Absorbent articles with dual-layered cores
US4968312A (en) 1988-06-03 1990-11-06 Sarbuland Khan Disposable fecal compartmenting diaper
US4892536A (en) 1988-09-02 1990-01-09 The Procter & Gamble Company Absorbent article having elastic strands
US4990147A (en) 1988-09-02 1991-02-05 The Procter & Gamble Company Absorbent article with elastic liner for waste material isolation
US5062840A (en) 1989-05-22 1991-11-05 Holt John N Disposable diapers
US5062840B1 (en) 1989-05-22 1995-01-03 John N Holt Disposable diapers
WO1994014395A1 (fr) * 1992-12-18 1994-07-07 The Procter & Gamble Company Article absorbant comprenant une separation transversale et verticale
WO1996016623A1 (fr) * 1994-11-30 1996-06-06 The Procter & Gamble Company Article absorbant a plusieurs hauteurs utiles pourvu d'une cloison transversale
US5653703A (en) * 1994-11-30 1997-08-05 The Procter & Gamble Company Absorbent article having angular upstanding transverse partition

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3097896A1 (fr) 2015-05-28 2016-11-30 The Procter and Gamble Company Procédé de fabrication et de commercialisation d'articles d'hygiène absorbants personnalisés
WO2016191438A1 (fr) 2015-05-28 2016-12-01 The Procter & Gamble Company Procédé de fabrication d'articles d'hygiène absorbants personnalisés
EP3235480A1 (fr) 2015-05-28 2017-10-25 The Procter & Gamble Company Procédé de fabrication et de commercialisation d'articles d'hygiène absorbants personnalisés
EP3238681A1 (fr) 2015-05-28 2017-11-01 The Procter & Gamble Company Procédé de fabrication et de commercialisation d'articles d'hygiène absorbants personnalisés
US11134925B2 (en) 2016-03-01 2021-10-05 The Procter & Gamble Company Diaper adapted for collection of urine sample from an infant
US11298276B2 (en) 2016-03-01 2022-04-12 The Procter & Gamble Company Diaper adapted for collection of uncontaminated and intact stool sample from an infant
US11135104B2 (en) 2017-06-27 2021-10-05 The Procter & Gamble Company Diaper product adapted for collection of exudate sample from an infant
US11246571B2 (en) 2017-06-27 2022-02-15 The Procter & Gamble Company Configurable absorbent articles having improved bodily exudate separation and sampling
US11938009B2 (en) 2017-06-27 2024-03-26 The Procter & Gamble Company Diaper product adapted for collection of exudate sample from an infant

Also Published As

Publication number Publication date
AU7821298A (en) 1998-12-30
CA2293626A1 (fr) 1998-12-17
JP2000513638A (ja) 2000-10-17
EP0988013A1 (fr) 2000-03-29
KR20010013617A (fr) 2001-02-26

Similar Documents

Publication Publication Date Title
EP0674499B2 (fr) Article absorbant comprenant une separation transversale et verticale
US5653703A (en) Absorbent article having angular upstanding transverse partition
EP0799001B1 (fr) Article absorbant possedant des prolongements anti-fuite
CA2204893C (fr) Article absorbant a plusieurs hauteurs utiles pourvu d'une cloison transversale
EP0765147B1 (fr) Procede de fabrication d'un article absorbant pourvu d'elements de retenue inflechis
AU708625B2 (en) Absorbent article having an extendible split core
US5026364A (en) Absorbent article having unitary waistcap and waistband
EP0197736B1 (fr) Couches à jeter avec élément protecteur de taille et ceinture élastique unitaires
EP0376022B1 (fr) Article absorbant avec bandeau et capuchon de taille formant élément unitaire
MXPA97002133A (en) Absorbent article that has an extendable nucleus part
WO1997041817A1 (fr) Couche avec amelioration du bourrelet entourant la jambe
WO1998056327A1 (fr) Couche ayant une barriere transversale extensible
WO1998014154A1 (fr) Couche a cloison transversale et son procede de production
MXPA99011511A (en) Diaper having extensible transverse barrier
WO1998014153A1 (fr) Couche pour bebes presentant une decoupe transversale avec lignes de jonction angulaires

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2293626

Country of ref document: CA

Ref country code: CA

Ref document number: 2293626

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 1019997011627

Country of ref document: KR

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1999 502963

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: PA/a/1999/011511

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 1998926358

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1998926358

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1019997011627

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1998926358

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1019997011627

Country of ref document: KR