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WO1999013813A1 - Culotte de proprete jetable a flancs elastiques - Google Patents

Culotte de proprete jetable a flancs elastiques Download PDF

Info

Publication number
WO1999013813A1
WO1999013813A1 PCT/US1998/018975 US9818975W WO9913813A1 WO 1999013813 A1 WO1999013813 A1 WO 1999013813A1 US 9818975 W US9818975 W US 9818975W WO 9913813 A1 WO9913813 A1 WO 9913813A1
Authority
WO
WIPO (PCT)
Prior art keywords
garment
elastic
ear portions
disposable absorbent
extending
Prior art date
Application number
PCT/US1998/018975
Other languages
English (en)
Inventor
Sunita Pargass
Original Assignee
Paragon Trade Brands
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 Paragon Trade Brands filed Critical Paragon Trade Brands
Priority to CA002303941A priority Critical patent/CA2303941C/fr
Priority to EP98946955A priority patent/EP1014909A4/fr
Publication of WO1999013813A1 publication Critical patent/WO1999013813A1/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
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/496—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 specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A61F13/4942—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49025—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material having multiple elastic strands
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F2013/49042—Form-fitting, self-adjusting disposable diapers with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length
    • A61F2013/49044—Form-fitting, self-adjusting disposable diapers with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length being stretchable non-elastic panels
    • A61F2013/49049—Form-fitting, self-adjusting disposable diapers with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length being stretchable non-elastic panels on the hips

Definitions

  • the present invention relates generally to a disposable absorbent article which is configured as a training pant, and more particularly to a disposable absorbent article having elasticized side regions formed with a plurality of generally parallel, laterally extending elastic elements for enhanced fit and economical manufacture.
  • Disposable absorbent articles such as disposable diapers and disposable pant-type garments (sometimes referred to as training pants), have found widespread acceptance.
  • Garments of this nature are typically configured for a single use, with an absorbent panel or core construction ordinarily provided in an integrated structure including a liquid-pervious topsheet or facing layer, and a backsheet or backing layer having at least a portion which is liquid impervious.
  • Pant-type garments include side seams which can be readily torn for removal of the garment if soiled, while adhesive-coated fastening tabs, or hook-and-loop fasteners are typically provided on disposable diapers.
  • Absorbent articles of the above nature are not only suitable for infants, but can be appropriately sized and configured for incontinence use by adults.
  • the absorbent article disclosed in the above-referenced patent is configured for enhanced fit by the provision of elastic elements at the front and rear waist regions of the article.
  • elastication desirably acts to conform the article to the wearer, enhancing fit, comfort and containment.
  • the present invention is particularly directed to an absorbent article, preferably configured as training pants, having side panel regions which are economically elasticized by the provision of a plurality of generally parallel, laterally extending elastic strand-like elements.
  • a disposable absorbent article embodying the principles of the present invention can be configured as a pant-type garment or a disposable diaper for infants or small children, or can be appropriately sized and configured for use by incontinent adults.
  • the article includes an elasticated waist band, elasticated side regions, and elasticated leg gathers extending around leg openings and extending upwardly, overlapping the side regions.
  • the leg openings are thereby substantially completely surrounded by elastication for better fit and liquid retention.
  • the elasticated side regions are economically formed with a plurality of strand-like elastic elements predominantly positioned laterally outwardly of the absorbent panel of the article.
  • the construction of the absorbent article includes an absorbent panel and a liquid permeable topsheet positioned on top of the absorbent panel.
  • a backsheet positioned beneath the absorbent panel and extending laterally outwardly from opposite sides of the absorbent panel at longitudinal end portions thereof defines a pair of front ear portions, and a pair of rear ear portions.
  • the front and rear ear portions define leg-encircling openings of the garment.
  • a central region extends laterally between the front ear portions and between the rear ear portions, and longitudinally connects the front and rear ear portions between the legs of the wearer.
  • the central region includes a crotch portion extending longitudinally between the front and rear ear portions of the garment.
  • a pair of side seams respectively joins the front ear portions to the rear ear portions forming opposite side regions to provide the garment with a pant-like configuration, and also thereby defines a waist opening.
  • a plurality of generally parallel, laterally extending, elastic elements joined to each of the front and rear ear portions provides elastication thereof, with each of the ear portions being elasticized by the elastic elements substantially throughout its longitudinal extent from the respective one of the leg-encircling openings to the waist opening.
  • a pair of elasticized gathers extends generally longitudinally of the garment at respective opposite sides of the absorbent panel, each of the gathers including an outer sleeve having a base edge fixed to one of the backsheet and the topsheet, and at least one gather elastic element positioned within a folded portion of the outer sleeve.
  • the gather elastic element of each gather can be positioned in spaced apart relationship to the base edge of each respective gather.
  • Each of the gather elastic elements extends longitudinally along and beyond the crotch portion so that th ⁇ elasticized gathers and the elasticized ear portions together provide elastication substantially completely around each of the leg-encircling openings of the garment.
  • the outer sleeves of the elasticized gathers can be formed separately from the topsheet and joined to the topsheet, or can be integrated with the topsheet such as by formation from the same piece of material.
  • a pair of waist elastic regions or bands respectively extend transversely of the garment beyond each end of the absorbent panel.
  • Each of the waist elastic regions extends transversely across the central region and the respective ear portions to the side seams.
  • the bands can alternately be localized in transverse extent, not extending across the ear portions.
  • the waist elastic regions are each preferably formed by a plurality of elastic members or elastic strands extending along a length of the regions. Alternately, one strand may be used at each of front and rear waist regions to elasticate the waist of the article.
  • at least one of the elastic elements of each leg gather assembly is positioned in sufficiently closely spaced relationship to associated components of the absorbent article for gathering the absorbent article for enhanced fit and aesthetic appeal.
  • a base elastic element can be positioned respectively adjacent to each of the base edges of the elasticized gathers.
  • Each of the base elastic elements is positioned within respective folded portions of the outer sleeves.
  • the absorbent panel preferably comprises absorbent material such as comminuted wood pulp (wood fluff) with superabsorbent polymer distributed therein.
  • the liquid pervious topsheet is positioned on top of the absorbent panel, with the topsheet being positionable generally adjacent to a wearer during use of the article.
  • the pair of longitudinally extending elasticized leg gather assemblies are positioned on respective opposite sides of a longitudinal centerline of the article.
  • the outer sleeves of the leg gather assemblies are joined to the topsheet of the article, and contain at least two, and preferably three or more, elastically contractible elastic elements.
  • the elastic elements are positioned in spaced apart relationship within an upstanding portion of the outer sleeve of each leg gather assembly, in a manner which desirably acts to distribute the elastic contraction forces generated by the elements along a substantial portion of the vertical extent of each leg gather assembly.
  • the outer sleeve of each leg gather assembly comprises hydrophobic nonwoven fabric, and may be configured as a composite including nonwoven fabric and an associated plastic film layer.
  • the upper sleeve of each leg gather assembly includes a base portion, which base portion may be joined to a respective lateral edge of the topsheet and extends laterally outwardly therefrom to a respective side edge of the article.
  • the topsheet can be configured to extend laterally outwardly beneath the leg gather assemblies to the side edges of the absorbent article, with each leg gather assembly having a ribbon-like configuration, respectively positioned on top of the topsheet of the article.
  • the invention provides stretch sides for a pant-like absorbent article without having separate stretch elements bonded to a central region of the article.
  • This configuration of elastic allows the achievement of a better fit without laterally gathering or corrugating the central region, particularly the tummy area and the crotch portion.
  • the configuration also allows for a complete elastic encircling of the leg openings leading to better containment performance.
  • FIGURE 1 is a perspective view of a disposable absorbent article, configured as disposable training pants, embodying the principles of the present invention generally as it appears when being worn;
  • FIGURE 2 is a top perspective view of the present absorbent article generally in a form prior to final assembly
  • FIGURE 3 is an exploded perspective view of the training pants of FIGURE 2;
  • FIGURE 4 is a top plan view of the training pants of FIGURE 2;
  • FIGURE 5 is a fragmentary cross-sectional view taken generally along lines 5-5 of FIGURE 4
  • FIGURE 6 is a fragmentary cross-sectional view taken generally along lines 6-6 of FIGURE 4;
  • FIGURE 7 is a fragmentary cross-sectional view taken generally along lines 7-7 of FIGURE 4;
  • FIGURE 8 is a fragmentary cross-sectional view similar to FIGURE 7 showing an alternate construction of the present invention.
  • a disposable absorbent article 10 illustrated as disposable training pants or a "pull-up" diaper, embodying the principles of the present invention.
  • the training pants are intended to refer to an absorbent article or garment which is worn by an individual for absorbing urine and/or fecal matter.
  • garments embodying the principles of the present invention are ordinarily sized for use by infants and children, but can also be appropriately sized for use by incontinent adults.
  • absorbent article 10 has been illustrated as disposable training pants, it will be understood that an article embodying the principles of the present invention can be configured as a diaper, including a fastening arrangement for fitting the article about a wearer so as to define a waist opening and a pair of leg openings. With particular reference to FIGURE 2, the article is shown before final assembly into the configuration of FIGURE 1.
  • the absorbent article 10 includes a narrow, rectangular rear waist portion 12, a narrow, rectangular front waist portion 14, and a substantially rectangular central region 16 longitudinally extending between the front and rear waist portions 12, 14 and including a crotch portion 17.
  • the crotch portion of the garment generally corresponds to that portion which is positioned between the legs of a wearer during use, and as used therein, comprises between about Va and V* of the longitudinal extent of the garment.
  • the central region 16 also includes a tummy area 17a which is above the crotch portion 17 and below the front waist portion 14; and a lower back area 17b which is above the crotch portion 17 and below the rear waist portion 12.
  • Ear portions 19a, 19b, 19c, 19d extend laterally outwardly from the central region 16, one at each of four corners of the central region.
  • the ear portions 19a, 19b, 19c, and 19d are each bounded by the central region
  • the absorbent article 10 is assembled by side connections such as a pair of adhesively secured or sonically welded side seams 20, 21 (shown in FIGURE 1) between edges 20a, 20b and 21a, 21b, respectively, forming a pant-shaped garment when assembled.
  • side seams connections are made by tape tabs (not shown) which are positioned for securement to the outside surface of the front waist portion 14, and to this end, a tape landing zone is preferably provided.
  • the tape landing zone typically comprises a strip of polymeric sheet material which the tape tabs can be securely, yet movably applied, with the landing zone desirably acting to reinforce the front outside surface of the garment so that removal and re-application of the tape tabs does not damage the article.
  • a suitable fastening arrangement can alternatively be provided by the provision of hook-and-loop-type fasteners (not shown), with tape tabs provided with suitable hook material, and with the region generally corresponding to tape landing zone provided with suitable loop material.
  • front and rear waist elastic regions 42, 44 such as comprising elastic elements or strands, are preferably provided within the front and rear waist portions 14, 12, along laterally extending edges of the backsheet 26 for enhanced fit, containment, and comfort.
  • a plurality of elastic elements or strands 104, 105 (shown in FIGURES 3 and 4) span entirely across the front and rear waist portions 14, 12.
  • the ear portions 19a, 19b, 19c, and 19d are elasticized by a plurality of laterally extending, and longitudinally spaced side elastic strands
  • FIGURES 3 and 4 which each extend between a respective edge 20a, 20b, 21a, 21b of the ear portions and the central region 16.
  • the ear portions 19a, 19b, 19c, and 19d are respectively connected along the edges 20a, 20b, 21a, 21b to form the structure of FIGURE 1, the ear portions 19a, 19b, 19c, and 19d together form elasticated, opposite side regions of the article 10.
  • both pair of front ear portions 19a, 19b, as well as the pair of rear ear portions 19c, 19d be elasticized by strands 106.
  • only the pair of front ear portions be so-elasticized, or only the pair of rear ear portions.
  • Additional elastic elements can be provided in the ear portions, in addition to parallel laterally extending elastic elements 106, such elastic elements extending perpendicularly or diagonally with respect to elements 106, or otherwise, including randomized placement of additional elastic elements.
  • the absorbent article 10 includes a backsheet 26 which generally defines the outer surface of the garment.
  • the backsheet 26 can be configured as a composite or laminate of an outer nonwoven fabric layer 102 (such as a carded fabric), and an inner nonwoven layer 110 (shown partially in FIGURE 3).
  • the entire backsheet 26 can be formed from suitable polymeric film material (such as a polyethylene sheet having a thickness on the order of 0.0005 to 0.001 inches).
  • suitable polymeric film material such as a polyethylene sheet having a thickness on the order of 0.0005 to 0.001 inches.
  • plastic film material only be positioned beneath the absorbent panel of the article.
  • Polyethylene terephthalate sheet material having a thickness of approximately 0.0005 to 0.001 inches may alternately be employed.
  • the inner nonwoven layer 110 can be substantially coextensive with the outer nonwoven fabric layer 102, or can comprise a pair of nonwoven fabric components which respectively extend laterally across and between the front ear portion and the rear ear portions.
  • the laterally extending ear portions 19a, 19b, 19c, 19d can be extended portions of the backsheet 26, i.e., composed of the nonwoven layer 102, 110.
  • the ear portions (the side regions of the finished article) can thus exhibit desired breathability (by virtue of the nonwoven fabric material in these areas) for enhanced comfort by the wearer.
  • elastic element 106 can be secured thereto prior to placement on layer 102.
  • the components of layer 110 can themselves comprise two or more layers of nonwoven fabric, with elements 106 positioned therein in a sandwich-like fashion.
  • the absorbent article 10 includes an absorbent panel 28 positioned on top of a liquid barrier film 112 which is secured to the backshfeet 26, with the barrier film 112 dimensioned at least as large as the absorbent panel 28.
  • the absorbent panel preferably comprises an absorbent matrix including comminuted wood pulp, sometimes referred to a wood fluff, and superabsorbent material, which may comprise superabsorbent polymers or the like. Absorbent matrices comprising blends and/or layers of absorbent material can be employed. If desired, the superabsorbent material may be concentrated in specifically selected regions of the absorbent panel.
  • a liquid distributing transfer layer 29 is positioned on top of the absorbent panel 28.
  • the transfer layer preferably comprises a low basis weight nonwoven fabric layer, which in a presently preferred form, comprises thermally bonded bi-component fibers of polyester and polypropylene, having a basis weight of.4_0 grams per square meter. Suitable material can be obtained from Fiberweb North America, Inc., under the product designation DFPN156.
  • Absorbent article 10 includes a topsheet 30 positioned on top of the absorbent panel 28.
  • the topsheet 30 can be configured in accordance with the illustrated embodiment, to have a longitudinal extent substantially extending the length of the crotch portion 17 of the article 10, and a transverse dimension such that the topsheet 30 has side edges spaced inwardly of respective side edges of the article 10.
  • each of the side edges of the topsheet 30 is respectively joined to a unitary leg gather assembly, designated 32, in accordance with the principles of the present invention.
  • the outer sleeves of the elasticized gathers can be formed separately from the topsheet and joined to the topsheet, or can be integrated with the topsheet.
  • FIGURES 3 and 4 uses a topsheet 30 which has a lateral extent substantially within the central region 16, i.e., not overlying the ear portions 19a, 19b, 19c, 19d.
  • the ear portions 19a, 19b, 19c, 19d can also be formed by extending portions of the topsheet 30 rather than the backsheet 26.
  • the ear portions 19a, 19b, 19c, 19d can also be found by extensions of both the backsheet 26 and the topsheet 30.
  • FIGURE 3 demonstrates in detail the assembly of the various layers which together make up the absorbent article 10.
  • the backsheet 26 includes the nonwoven fabric layer 102 upon which is carried the front waist elastic strands 104, the rear waist elastic strands 105 and the side elastic strands 106.
  • the elastic strands 104, 105, and 106 are secured by an adhesive.
  • the elastic strands 104, 105 are separated longitudinally at about a .25 inch spacing.
  • the side elastic strands 106 are located longitudinally between the leg openings 18 and the waist elastics 104 and 105 within the four areas 19a, 19b, 19c and 19d.
  • the side elastic strands 106 provide an elastication of the article 10 through the tummy area 17a, the lower back area
  • the side elastic strands 106 are installed onto the nonwoven fabric layer 102 by stretching double-length strands entirely across the ear portions 19a, 19b, 19c, and 19d and respective tummy and lower back areas 17a, 17b and cutting along a longitudinal centerline CL. Cut ends of the strands then separate by elastic force from the centerline CL outwardly by about 4 inches, indicated as dimension F.
  • dimension F the dimension of the strands then separate by elastic force from the centerline CL outwardly by about 4 inches, indicated as dimension F.
  • the tummy area 17a and the crotch portion 17 are left non-elasticated. This is an important advantage of the embodiment of the invention which avoids gathering or corrugating the tummy area 17a and the crotch portion 17, for a more comfortable fit and a smoother appearance of the article.
  • the side elastic strands 106 can advantageously be spaced longitudinally from between 1/16" to 2", and preferably at .25 inches.
  • the spacing of the elastic strands 106 can be varied.
  • between fourteen (14) and twenty (20) side elastic strands can be applied to each ear portion, although the invention is not limited to this range.
  • the ear portion dimension "G" can also be about 4 inches, for each of the ear portions 19a, 19b, 19c, and 19d extending to a respective edge of the backsheet 26.
  • the inner nonwoven layer 110 is adhesively secured covering the elastic strands 104, 105, 106 and the outer nonwoven layer 102. The elastic strands 104, 105, 106 are thus captured between the outer nonwoven layer 102 and the inner nonwoven layer 110.
  • the barrier film 112 is applied to the inner nonwoven layer 110 and adhesively secured thereto.
  • the core layer 28 is applied onto the barrier film 112.
  • the transfer layer 29 is applied onto the core 28.
  • the topsheet 30 is applied over the core and transfer layer and onto the barrier film 112.
  • Opposing leg gathers 32 are applied partially onto the topsheet 30 and also onto the barrier film 112.
  • the leg gather assemblies are attached along lines approximately one half inch inward from the edges of the leg openings 18.
  • Two nonwoven strips 180, 182 are adhesively secured across the article, securing longitudinal ends 32a of the gather assemblies 32 to the top sheet 30 and serving a reinforcing purpose.
  • the strips 180, 182 are also secured along their length to the inner nonwoven layer 110 as shown in FIGURES 5 and 6.
  • All the layers which are stacked to construct the article can be secured using intervening layers or coatings of construction adhesive (not shown).
  • FIGURE 4 demonstrates an important feature of the invention in that the leg gather elastic strands 38, 38' extend longitudinally to overlap the side elastic strands 106 by distances 184, 185. When the article 10 is assembled, the overlap ensures a complete elastication around the leg cut-outs 18, to provide enhanced containment and fit characteristics.
  • each leg gather assembly 32 is joined to each leg gather assembly 32 by a respective bond 33, which may comprise sonic bonding or suitable adhesive.
  • Each of the longitudinally extending leg gather assemblies 32 is elasticized in a specifically configured arrangement to provide the desired containment and fit characteristics for the disposable absorbent article 10.
  • each leg gather assembly 32 includes an outer sleeve 32' preferably comprising nonwoven fabric having an upstanding portion 34, and a laterally extending base portion 36. Within the outer sleeve are arranged a plurality of elastic strands 38 and a lowest-most elastic strand 38'.
  • the base portion 36 of the outer sleeve extends laterally outwardly from the topsheet to the respective side edge of the absorbent article and is joined to the backsheet 26, particularly the inner layer 110, with suitable adhesive or by sonic bonding indicated at 35.
  • the outer sleeve can be configured such that the base portion extends laterally inwardly only or outwardly only, such as in an L-shaped configuration.
  • a ider topsheet 30' can extend beneath each of the leg gather assemblies 32 laterally outwardly toward the side edges of the article 10, and can be joined to the backsheet 26 with suitable adhesive or sonic bonding.
  • the topsheet 30' is secured by a bond 35' to the inner nonwoven layer 110.
  • the extending base portion 36 is secured to the topsheet 30' by a bond 33' along an edge inward of the upstanding portion 34, and by a bond 36' along an edge outward of the upstanding portion 34.
  • the bonds 33' and 36' can be suitable adhesive bonds or sonic bonds.
  • each leg gather assembly 32 is arranged to have a generally inverted T-shaped configuration, wherein the base portion 36 extends beneath, and inwardly and outwardly of, the associated upstanding portion 34. While the free edges of the material forming the outer sleeve are illustrated as being positioned at the base portion 36, these free edges can be otherwise positioned, such as at the uppermost position 39 of the outer sleeve 32'.
  • the upstanding portion 34 of the outer sleeve 32' of each leg gather assembly provides the desired sleeve-like configuration for each leg gather assembly within which the plural elastic elements of each leg gather assembly are positioned.
  • each leg gather assembly can be secured or fixed in this narrow sleeve-like configuration by suitable bonding, such as by the application of spray adhesive 37, or by the provision of suitable sonic bonding.
  • suitable bonding such as by the application of spray adhesive 37, or by the provision of suitable sonic bonding.
  • the walls of the outer sleeve would thus be squeezed or collapsed together between elastic elements 38, 38' and adhesively secured in that configuration.
  • each leg gather assembly tends to extend generally toward the perineal region of the wearer, generally toward what is sometimes referred to as the "thigh crease".
  • One or more of the elastic elements 38, 38' act as a crotch elastic member by respectively extending along each side of the absorbent panel in the crotch portion 17.
  • Each of the crotch elastic members can extend beyond the crotch portion adjacent to the elasticized regions of the ear portions 19a, 19b, 19c, 19d.
  • base elastic element 38' only extend along the length of the crotch portion of the article.
  • the elastic elements 38, along with the side elastic elements 106 thus can serve the function of elasticizing all around the leg openings defined by the cut-outs 18.
  • enhanced containment and fit are provided by the provision of at least two, and preferably three or more elastic elements within the outer sleeve of each of the leg gather assemblies 32.
  • three, and preferably four, evenly spaced apart elastic elements 38, 38' are provided within the upstanding portion 34 of the outer sleeve of each leg gather assembly 32.
  • the elastic elements are evenly spaced apart by about 11 mm, with the lowermost elastic 38' spaced throughout its extent from the backsheet 26 by about 2 mm.
  • the leg gather assemblies 32 of the present disposable absorbent article have been particularly configured for enhanced containment and fit, thereby permitting the side marginal portions of the article to otherwise be non-elasticized.
  • at least two of the elastic elements are provided within the outer sleeve of each leg gather assembly, with at least one elastic element provided in an upper half of each upstanding portion 34 of the respective outer sleeve, and at least one elastic element positioned within the lower half of the upstanding portion of each outer sleeve.
  • one of the elastic elements positioned within the lower half of the upstanding portion of the outer sleeve can exert a greater elastic gathering force on the outer sleeve than one of the elastic elements in the upper half of the upstanding portion.
  • one of the elastic elements exerting the greater gathering force is positioned within the lower half of the upstanding portion 34 of outer sleeve 32', and can be positioned in spaced relationship from the backsheet 26 throughout its extent.
  • the lowest-most elastic element 38' can be located in the outer sleeve 32' or otherwise closely spaced or adjacent to the backsheet.
  • the elastic element 38' in each leg gather assembly 32 spaced furthest from the uppermost position 39 of the outer sleeve 32' exerts a greater elastic gathering force on the respective outer sleeve than the other ones of the elastic elements.
  • the preferred embodiment of the present invention is configured such that the side marginal portions of the article, i.e., those portions of the construction disposed generally laterally outwardly of bonds 33 (or 33' in FIGURE 8), are non-elasticized, other than by the elastication provided by the elastic elements 38, 38' of each leg gather assembly 32.
  • the base portion 36 of the outer sleeve of each leg gather assembly is non-elasticized, except by any elastication provided by the spaced apart elastic elements 38, 38'.
  • additional longitudinally extending elastic elements can be provided generally beneath or outwardly of each gather assembly 32.
  • Configuring elastic element 38' for exerting a greater elastic gathering force on the outer sleeve of each leg gather assembly 32 can be effected in any of a variety of ways. If desired, the elastic element 38' can have an untensioned cross-sectional area greater than the other elastic elements 38, and thus exhibit a greater modulus of elasticity. Elastic element 38' can comprise material which is different than the other elastic elements
  • the elastic element 38' can be subjected to greater elongation than the other ones of the elastic elements, and thus be configured to create a greater elastic gathering force than the other elements, even if exhibiting an untensioned cross-sectional area which is the same as the other elements.
  • the outer sleeve of each of the leg gather assemblies 32 preferably comprises hydrophobic nonwoven fabric, thereby resisting the passage of liquid therethrough.
  • a suitable fabric can comprise spunbonded polypropylene nonwoven fabric having a basis weight in the range of about 0.03 to 0.8 ounces per square yard and a bond area in the range of 7% to 20%, with a basis weight of about 0.5 to 0.6 ounces per square yard, and an 18% bond area being particularly preferred. When untreated, this material exhibits the desired degree of hydrophobicity.
  • One commercially available material of this type is available from Fiberweb of America, Greenville, South Carolina, under the product designation Unicorn
  • the topsheet 30 may also comprise a polypropylene nonwoven fabric having a basis weight and bond areas described above for the outer sleeves of the leg gather assemblies 32. While the liquid permeability characteristics of the topsheet 30 (or 30') can be selectively varied while keeping with the principles disclosed herein, it is presently preferred that the topsheet 30 (or 30') be selected to exhibit significantly greater hydrophilicity, and thus, greater liquid permeability, than the outer sleeves 32' of the leg gather assemblies 32. To this end, polypropylene nonwoven material such as described above is ordinarily treated with a surfactant to achieve the desired hydrophilicity. Altematively, a hydrophobic fabric having apertures to permit liquid passage therethrough may be employed.
  • the upstanding portion 34 of each of the leg gather assemblies 32 is partially secured to the top surface of the associated topsheet 30 (or 30').
  • at least one longitudinal end of the upstanding portion 34 of the outer sleeve of each leg gather assembly is secured inwardly to the topsheet, such as by suitable adhesive or sonic bonding, as indicated at 38a.
  • each leg gather assembly on the associated article components should effect contraction from a fully elongated length in the range from about 20% to 50%. This is preferably achieved by positioning the lowermost elastic element 38' no more than about .25 inches from the backsheet 26.
  • the disposition of each leg gather assembly 32 with respect to the associated absorbent panel 28 is such that the base portion 36 of each leg gather assembly is preferably no more than about 1 inch away from the narrowest portion of the absorbent panel, with this base portion being preferably positioned no more than about 1 inch inwardly from the respective side edge of the article.
  • leg gather assemblies 32 have been illustrated as being generally linear and in parallel relationship to each other and to the centerline of the disposable article 10, it is within the purview of the present invention to position the leg gather assemblies in a curved or otherwise non-parallel configuration.
  • the ribbon-like leg gather assemblies 32 illustrated in FIGURE 7 can be formed to each have a length preferably at least 10% greater than that of the absorbent article, and then attached to the article to each define a curved configuration by virtue..of the "extra material" of each leg gamer assembly.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention traite d'un article (10) absorbant, jetable, qui peut prendre la forme d'une culotte, d'une couche jetable pour bébé ou d'un produit pour incontinence d'adulte. Cet article (10) comporte une feuille arrière (26), un pan absorbant (28) positionné au dessus de cette feuille arrière (26), et une feuille supérieure (30) perméable aux liquides et positionnée au dessus dudit pan absorbant (28). Une paire d'ensembles fronce (32) longitudinaux, élastiques, d'une seule pièce et venant au contact des jambes, est positionnée sur chacun des côtés opposés de l'axe (CL) longitudinal de l'article. Des organes élastiques (104, 105) encerclant la taille s'étendent partiellement ou sensiblement totalement en travers d'une partie d'encerclement (12, 14) de la taille. Des zones latérales opposées (19a-19d) du vêtement comportent chacune une pluralité d'éléments élastiques latéraux (106) qui s'étendent latéralement et sont espacés dans le sens longitudinal entre les zones (18) d'encerclement des jambes et les éléments élastiques (104) encerclant la taille. Chacun desdits ensembles fronce (32) comporte une gaine externe (32') présentant une protubérance (34) à l'intérieur de laquelle se trouvent les éléments (38, 38') à contraction élastique qui sont responsables de l'adaptation de ces ensembles fronce (32) à une personne portant cette culotte et ce, en vue d'obtenir la rétention recherchée.
PCT/US1998/018975 1997-09-16 1998-09-14 Culotte de proprete jetable a flancs elastiques WO1999013813A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002303941A CA2303941C (fr) 1997-09-16 1998-09-14 Culotte de proprete jetable a flancs elastiques
EP98946955A EP1014909A4 (fr) 1997-09-16 1998-09-14 Culotte de proprete jetable a flancs elastiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93138997A 1997-09-16 1997-09-16
US08/931,389 1997-09-16

Publications (1)

Publication Number Publication Date
WO1999013813A1 true WO1999013813A1 (fr) 1999-03-25

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PCT/US1998/018975 WO1999013813A1 (fr) 1997-09-16 1998-09-14 Culotte de proprete jetable a flancs elastiques

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EP (1) EP1014909A4 (fr)
CA (1) CA2303941C (fr)
WO (1) WO1999013813A1 (fr)

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WO1999060974A1 (fr) * 1998-05-28 1999-12-02 The Procter & Gamble Company Article absorbant jetable
KR100426106B1 (ko) * 1998-05-28 2004-04-08 더 프록터 앤드 갬블 캄파니 일회용 흡수 제품
US7901390B1 (en) 1998-05-28 2011-03-08 The Procter & Gamble Company Disposable absorbent article
US7118558B2 (en) 2001-11-06 2006-10-10 Tyco Healthcare Retail Services Ag Cloth-like laminate and absorbent garment
US11793682B2 (en) 2003-02-12 2023-10-24 The Procter & Gamble Company Thin and dry diaper
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CA2303941C (fr) 2006-01-17

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