WO1997043994A1 - Produits absorbants elastiques - Google Patents

Produits absorbants elastiques Download PDF

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Publication number
WO1997043994A1
WO1997043994A1 PCT/US1997/008594 US9708594W WO9743994A1 WO 1997043994 A1 WO1997043994 A1 WO 1997043994A1 US 9708594 W US9708594 W US 9708594W WO 9743994 A1 WO9743994 A1 WO 9743994A1
Authority
WO
WIPO (PCT)
Prior art keywords
elasticized
absorbent product
sheet
cover sheet
pad
Prior art date
Application number
PCT/US1997/008594
Other languages
English (en)
Inventor
Goran Elovsson
James Hanson
David Helms
Original Assignee
Jps Elastomerics Corporation
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 Jps Elastomerics Corporation filed Critical Jps Elastomerics Corporation
Priority to AU32085/97A priority Critical patent/AU3208597A/en
Publication of WO1997043994A1 publication Critical patent/WO1997043994A1/fr

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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 articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • 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
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
    • 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
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F13/51464—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/539—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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers

Definitions

  • the present invention relates to elasticized absorbent products, e.g. , disposable diapers, training pants, feminine pads and adult incontinence disposable, and a method for making the same. More specifically, the present invention relates to elasticized absorbent products wherein at least one of the sheets is comprised of a stretchable elastomeric material which is utilized to form elasticized features.
  • elasticized absorbent products e.g., disposable diapers, training pants, feminine pads and adult incontinence disposable
  • One of the major improvements has been the better use of elasticized features and as a result, the use of more elastic components, which help to prevent leakage by improvements in fitting characteristics of the products.
  • a side effect of improvements in the elastif ication of diapers, training pants, adult products and feminine hygiene products is the increased component complexity and expense of assembling these new structures by commonly used equipment.
  • Disposable diapers for infants have been the subject of a great deal of inventive activity to prevent leakage.
  • One very successful effort in this regard was the use of a box pleat around the thigh areas of an infant.
  • a diaper of this type is described by Duncan et al in U.S. Pat. No. Re. 26, 152. While this construction represented a major step forward, it still did not provide an entirely satisfactory solution to the problem of leakage.
  • Another move toward an ultimate solution is described by Buell in U.S. Pat. No. 3,860,003.
  • the Buell diaper used narrow ribbons of stretched elastic along each longitudinal side margin in the thigh encircling areas. This construction has been so highly successful that it has been emulated and improved upon by subsequent inventors in the field. The following U.S. Pat. Nos.
  • Natural rubber is a relatively inexpensive product and for this and other reasons, it is normally used in the form of threads or relatively narrow ribbons when used to elasticize portions of garments.
  • a disadvantage of this construction is that the elasticized portion of the garment frequently presents a small and very narrow bearing area against the skin of the wearer.
  • the purpose of the elasticized area is to prevent leakage, as in the case of a disposable diaper with elastic legs, the elastic must be held under relative high tension to provide a tight seal. This will frequently result in chafing and general discomfort to the wearer.
  • One solution to this problem has been to use parallel narrow strips of rubber elastic to increase the bearing area.
  • a diaper having this type of construction is seen in Repke, U.S. Pat. No 4,430,086.
  • Heat shrinkable materials became of interest to diaper designers as another method for overcoming the cutting and chafing problem caused by narrow elastic.
  • U.S. Pat. No. 4,726,807 is directed towards a method and apparatus for the manufacture of diapers having elastic leg and/or waist areas formed using areas of heat shrinkable elastomeric materials located in the appropriate marginal zones of the diaper.
  • These heat shrinkable elastomeric material are those which are heat unstable and relatively inelastic in their unshrunk form and stable and relatively elastic in their heat shrunk form. They may comprise discrete strips located along the appropriate marginal areas of the diapers. Alternatively, the entire moisture impermeable backing sheet or the diaper comprises the heat shrinkable elastomeric material.
  • the method of U.S. Pat. No. 4,726,807 includes uniting the individual components to form a continuous end-to-end or side-by-side assembly of diaper units.
  • each diaper unit is maintained under sufficient longitudinal tension to prevent wrinkling during the manufacturing process.
  • an appropriate area of the longitudinal edges of each diaper unit is heated to a temperature sufficiently high to enable shrinkage of the elastomeric material.
  • the marginal longitudinal tension is relaxed while tension is maintained in the central portion of the assembly.
  • the marginal tension is kept in relaxed condition for a sufficient time for the heated elastomeric material to shrink and cool to a temperature where it is again stable, thereby creating marginal elasticized zones on the diapers.
  • the elasticized absorbent products e.g., disposable diapers, training pants, feminine pads and adult incontinence disposable, of the present invention.
  • Disposable garments for adult incontinence, baby diapers, training pants and feminine hygiene products, which are the subject to this invention, can be manufactured using a simplified system with fewer materials and a simplified manufacturing process.
  • at least one sheet of the elasticized absorbent product is comprised of a stretchable material which is utilized to form elasticized features.
  • the use of elastic films to replace the relatively non-extensible film backsheets normally used allows the film to produce more than one elastic feature while also performing the traditional backsheet role as a liquid barrier.
  • the elastic film replaces the conventional relatively non-extensible plastic film backsheet commonly used in the industry.
  • the use of elastic nonwoven fabric i.e. , a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry
  • the elastic nonwoven fabric replaces the conventional relatively non-extensible nonwoven top sheet commonly used in the industry.
  • the simplified system eliminates the additional elastic material components normally used to manufacture standing leg gathers, waistbands and elastic leg constructions by eliminating use of the separate extensible foams, elastic threads, ribbons and narrow strips of elastic films that must be assembled and replacing them by differentially stretching at least one of the elastic sheets to produce variable "system elasticity" throughout the finished absorbent product.
  • the invention also overcomes the difficulties associated with producing a successful absorbent product that develops and retains its three-dimensional shape and good body-fitting characteristics without the use of exotic materials and preserves the manufacturability of such products at high speed on conventional equipment such as is now commonly used in the industry. These improved body- fitting characteristics are further enhanced by the use of variably stretching across the whole product.
  • a further advantage of this approach is the ability to easily make three-dimensionally contoured final products which assume predictable shapes when worn on the body, while still using conventional coverstock fabrics, which are relatively inelastic but which are abundant in supply and low in cost. It will be appreciated that the present invention allows the use of flat materials for forming three-dimensional products.
  • a diaper in accordance with a first embodiment the present invention comprises a moisture impervious backsheet which is overlaid by a moisture absorbent fluff filler pad. This, in turn, is covered with a moisture pervious nonwoven top sheet.
  • Each diaper unit typically has longitudinal margins which define the leg encircling crotch areas and longitudinal margins which are located in the waistband area. The diapers further have transverse margins which further define the ends of the waistband areas.
  • the backsheet comprises a moisture impermeable elastic material that is multidirectionally stretchable prior to and after attachment to the nonwoven top sheet.
  • the top sheet comprises a moisture pervious elastic nonwoven material that is multidirectionally stretchable prior to and after attachment to the backsheet.
  • the entire assembly is bonded together by an adhesive, sonobonding, ultrasonic welding/bonding, thermobonding or other suitable means.
  • the backsheet (in the alternate embodiment, the top sheet) at the leg encircling crotch areas is longitudinally stretched and/or the waistband areas are transversely stretched prior to bonding of the backsheet to the nonwoven top sheet.
  • the stretched portions of the backsheet (in the alternate embodiment, the top sheet) are then bonded, while stretched, to the nonwoven top sheet (in the alternate embodiment, the backsheet). Once the bonding is completed, these selected portions of the backsheet (in the alternate embodiment, the top sheet) are relieved, resulting in shirred or gathered edges with accompanying folds.
  • the nonwoven top sheet in the alternate embodiment, the backsheet
  • the nonwoven top sheet at the leg encircling crotch areas and/or the waistband areas is pleated (which may comprise variable tension pleats) or corrugated prior to bonding of the backsheet to the nonwoven top sheet Once the bonding is completed, these selected portions provide shirred or gathered edges with accompanying folds
  • a diaper (1 e , adult incontinence or baby diapers) in accordance with a second embodiment the present invention comprises a moisture impervious backsheet which has a nonwoven sheet bonded thereto
  • the leg encircling crotch areas of the backsheet are longitudinally stretched and/or the waistband areas of the elastic backsheet (in an alternate embodiment, the elastic nonwoven sheet) are transversely stretched prior to bonding of the backsheet to the nonwoven sheet
  • the stretched portions of the backsheet (in the alternate embodiment, the nonwoven sheet) are then bonded, while stretched, to the nonwoven sheet (in the alternate embodiment, the backsheet)
  • the backsheet and the nonwoven sheet are bonded together by an adhesive, sonobonding, ultrasonic weldmg/bondmg, thermobonding or other suitable means Once the bonding is completed, these selected portions of the backsheet (in the alternate embodiment, the nonwoven sheet) are relieved, resulting in shirred or gathered edges with accompanying folds Alternatively, the nonwoven sheet (in the alternate embodiment
  • a diaper i.e., adult incontinence or baby diapers
  • a third embodiment of the present invention comprises a moisture impervious backsheet which is overlaid by a moisture absorbent fluff filler pad (l e. , absorbent core)
  • a moisture pervious nonwoven top sheet i e , coverstock
  • the diaper of this embodiment has do most diapers, has longitudinal margins which define the leg encircling crotch areas and longitudinal margins which are located in the waistband area.
  • the diapers further have transverse margins which further define the ends of the waistband areas.
  • the entire assembly is bonded together by an adhesive, sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method, as described below.
  • the nonwoven sheet at the leg encircling crotch areas and the raised leg gathers are pleated or corrugated, prior to bonding to the elastic backsheet to allow stretching in this area.
  • the bonding of the backsheet at the pleats to the nonwoven top sheet will secure the layers and the pleats or corrugations while allowing the portions of the diaper having these pleats to be stretched. Accordingly, the backsheet is allowed to stretch, as a result of the bonding to the nonwoven top sheet at the base of the pleats or corrugations. Once the bonding is completed, these selected portions provide shirred or gathered edges with accompanying folds.
  • the cover sheet at the waistband areas is corrugated or pleated, prior to bonding to allow stretching in this area.
  • the bonding of the backsheet to the nonwoven top sheet at the corrugations or pleats will secure the layers while allowing the portions of the diaper having these corrugations or pleats to be stretched. Once the bonding is completed, these selected portions provide shirred or gathered edges with accompanying folds.
  • the nonwoven sheet is elastic, whereby the backsheet at the leg encircling crotch areas and the raised leg gathers are pleated or corrugated, prior to bonding to the elastic nonwoven sheet to allow stretching in this area.
  • the bonding of the nonwoven sheet at the pleats or corrugations to the backsheet will secure the layers and the pleats or corrugations while allowing the portions of the diaper having these pleats or corrugations to be stretched. Accordingly, the nonwoven sheet is allowed to stretch, as a result of the bonding to the backsheet at the base of the pleats or corrugations. Once the bonding is completed, these selected portions provide shirred or gathered edges with accompanying folds.
  • the backsheet at the waistband areas is corrugated or pleated, prior to bonding to allow stretching in this area.
  • the bonding of the backsheet to the nonwoven top sheet at the corrugations or pleats will secure the layers while allowing the portions of the diaper having these corrugations or pleats to be stretched. Once the bonding is completed, these selected portions provide shirred or gathered edges with accompanying folds.
  • the elastic leg encircling crotch areas and waistband areas ensure a tight fit and are important in preventing leakage when worn by an infant or adult user.
  • the shirred edges are generally placed under tension and the diaper surface is drawn reasonably flat.
  • a feminine pad (or an adult bridge product) in accordance with a fourth embodiment of the present invention comprises a moisture impervious backsheet which is overlaid by a moisture absorbent core. This, in turn, is covered with a moisture pervious nonwoven top sheet (i.e. , coverstock).
  • the coverstock has corrugations formed latitudinally at about the longitudinal center thereof. Once the layers of the pad have been stacked, as described above, the backsheet and coverstock layers are bonded at the corrugations. Bonding is accomplished by a suitable adhesive, sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.
  • the pad and thereby the backsheet is longitudinally stretched, where the remaining periphery about the absorbent core of the backsheet and the coverstock are bonded while in the stretched state.
  • an elastic sheet is an important element of the present invention as it can be stretched at various places during the assembly process to produce a three-dimensional products that has a controlled three-dimensional shape on the wearer.
  • a diaper in accordance with still another embodiment of the present invention comprises a moisture impervious backsheet which is overlaid by a moisture absorbent fluff filler pad (i.e. , absorbent core). This, in turn, is covered with an elastic sheet followed by a moisture pervious nonwoven top sheet (i.e. , coverstock).
  • the elastic sheet has a generally centered oval shape opening therein (i.e., at the crotch area).
  • the elastic sheet is stretched at the standing leg gathers areas and at the leg encircling crotch areas, prior to bonding.
  • the elastic sheet at the stretched areas is bonded under tension to the coverstock and/or the backsheet. Once the bonding is completed, these selected portions are relieved, resulting in shirred or gathered edges with accompanying folds.
  • Standing leg gathers are formed by folded the elastic sheet and the coverstock inwardly, where they are bonded at selected areas. Thereafter, leg cutouts are made to define the leg encircling crotch areas.
  • these elastic leg encircling crotch areas, the raised leg gathers, and the elastic waistband areas ensure a tight fit and are important in preventing leakage when worn by an infant or adult user.
  • the shirred edges are generally placed under tension and the diaper surface is drawn reasonably flat.
  • the use of the elastic sheet is an important element of the present invention as it can be stretched at various places during the assembly process to produce a three-dimensional products that has a controlled three-dimensional shape on the wearer.
  • FIGURE 1 is a plan view of a disposable diaper in accordance with a first embodiment of the present invention
  • FIGURE 2 is a plan view of a disposable diaper in accordance with a second embodiment of the present invention
  • FIGURE 3 is a side elevation view of the disposable diaper of FIGURE 2;
  • FIGURE 4 is a perspective view of a disposable diaper in accordance with a third embodiment of the present invention.
  • FIGURE 5 is an end view of the disposable diaper of FIGURE 4 prior to bonding
  • FIGURE 6 is a bottom view of the disposable diaper of FIGURE 4 prior to bonding
  • FIGURE 7 is an end view of the disposable diaper of FIGURE 4 that has been folded into proper configuration, prior to bonding;
  • FIGURE 8 is a top view of the disposable diaper of FIGURE 4 that has been folded into proper configuration and having the leg cutouts indicated, prior to bonding;
  • FIGURE 9 is a top view of a plurality of pleats in the disposable diaper of
  • FIGURE 4
  • FIGURE 10 is an end view of a plurality of corrugations at the waistband of the disposable diaper of FIGURE 4;
  • FIGURE 11 is a perspective view of a feminine pad or an adult bridge product in accordance with a fourth embodiment of the present invention.
  • FIGURE 12 is an end view of a form for use in manufacturing the feminine pad of FIGURE 11;
  • FIGURE 13 is a side view of the form of FIGURE 12;
  • FIGURE 14 is a top view of the form of FIGURE 12;
  • FIGURE 15 is an end view of the feminine pad of FIGURE 11 , prior to bonding, disposed on the form of FIGURE 12;
  • FIGURE 16 is a side view of the feminine pad of FIGURE 11 , prior to bonding, disposed on the form of FIGURE 12;
  • FIGURE 17 is a top view of the feminine pad of FIGURE 11 with a cut line indicated, prior to bonding, disposed on the form of FIGURE 12;
  • FIGURE 18 is a top view of a first layer of the absorbent core of the feminine pad of FIGURE 11 ;
  • FIGURE 19 is a top view of a second layer of the absorbent core of the feminine pad of FIGURE 11 ;
  • FIGURE 20 is a top view of the second layer of absorbent core, illustrating the folding of the tabs thereof;
  • FIGURE 21 is an end view of the absorbent core of the feminine pad of FIGURE 11;
  • FIGURE 22 is a side view of the feminine pad of FIGURE 11 after an initial bonding step in a relaxed state
  • FIGURE 23 is a top view of the feminine pad of FIGURE 11 after an initial bonding step in a relaxed state
  • FIGURE 24 is a side view of the feminine pad of FIGURE 11 after the final bonding step in the stretched state
  • FIGURE 25 is a top view of the feminine pad of FIGURE 11 after the final bonding step in the stretched state;
  • FIGURE 26 is a perspective view of a disposable diaper in accordance with an alternate embodiment of the present invention.
  • FIGURE 27 is an end view of the disposable diaper of FIGURE 26 prior to bonding
  • FIGURE 28 is a top view of the disposable diaper of FIGURE 26 prior to bonding
  • FIGURE 29 is a top view of the disposable diaper of FIGURE 26 that has been folded to form standing leg gathers, prior to bonding;
  • FIGURE 30 is a cross sectional view taken along the line 30 - 30 in
  • FIGURE 29
  • FIGURE 31 is a cross sectional view taken along the line 31 - 31 in FIGURE 29;
  • FIGURE 32 is the same cross sectional view of FIGURE 31 , showing the areas to be stretched;
  • FIGURE 33 is the same top view of FIGURE 29, showing the areas to be stretched.
  • FIGURE 34 is the same cross sectional view of FIGURE 32, showing the areas to be bonded under tension
  • FIGURE 35 is the same top view of FIGURE 33, showing the areas to be bonded under tension
  • FIGURE 36 is an end view of the disposable diaper of FIGURES 34 and 35 after initial bonding, showing the direction for folding of the standing leg gathers;
  • FIGURE 37 is a top view of the disposable diaper of FIGURES 34 and 35 after initial bonding, showing the direction for folding of the standing leg gathers;
  • FIGURE 38 is an end view of the disposable diaper of FIGURES 36 and 37 after final bonding of the folded standing leg gathers;
  • FIGURE 39 is a top view of the disposable diaper of FIGURES 36 and 37 after final bonding of the folded standing leg gathers; and
  • FIGURE 40 is a top view of the disposable diaper of FIGURES 38 and 39 indicating leg cutouts.
  • the ends, or waist encircling portion of the diaper is in the longitudinal direction of motion during manufacture.
  • Diaper 10 comprises a moisture impervious backsheet 12 which is overlaid by a moisture absorbent fluff filler pad 14. This, in turn, is covered with a moisture pervious nonwoven top sheet 16.
  • Each diaper unit typically has longitudinal margins 18 which define the leg encircling crotch areas and longitudinal margins 20 which are located in the waistband area. The diapers further have transverse margins 22 which further define the ends of the waistband areas.
  • Adhesive attachment tapes 24 complete the unit, as is known. However, it will be appreciated that hook and loop fasteners (e.g. , Velcro ® fasteners) or other means of fastening may be employed.
  • Backsheet 12 comprises a moisture impermeable elastic material (e.g. , a KRATON ® Polymer such as is commercially available from Shell Chemical
  • the backsheet can be stretched at these areas to varying degrees to produce varying elasticity, e.g. , increasing elasticity moving towards the edge.
  • these selected portions are relieved, resulting in shirred or gathered edges 28, 30 with accompanying folds.
  • nonwoven sheet 16 at the leg encircling crotch areas and/or the waistband areas are pleated (which may comprise variable tension pleats) or corrugated, as described hereinbelow, prior to bonding of backsheet 12 to nonwoven top sheet 16.
  • the un-stretched backsheet 12 is then bonded at the pleats or corrugation to nonwoven top sheet 16.
  • these selected portions provide shirred or gathered edges 28, 30 with accompanying folds.
  • backsheet 12 is not required to be comprises of an elastic material. However, it is within the scope of the present invention that both sheets could be comprised of an elastic material.
  • Nonwoven top sheet 16 is comprised of an elastic nonwoven fabric (i.e. , a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry) that is multidirectionally stretchable prior to and after attachment to backsheet 12. The entire assembly is bonded together as described before. Nonwoven sheet 16 at the leg encircling crotch areas is longitudinally stretched and/or the waistband areas are transversely stretched prior to bonding of backsheet 12 to nonwoven top sheet 16. The stretched portions of nonwoven sheet 16 are then bonded, while stretched, to backsheet 12. The nonwoven sheet can be stretched at these areas to varying degrees to produce varying elasticity, e.g. , increasing elasticity moving towards the edge. Once the adhesive has cured (i.e., the bonding is completed), these selected portions are relieved, resulting in shirred or gathered edges 28, 30 with accompanying folds.
  • an elastic nonwoven fabric i.e. , a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry
  • backsheet 12 at the leg encircling crotch areas and/or the waistband areas are pleated (which may comprise variable tension pleats) or corrugated, as described hereinbelow, prior to bonding of backsheet 12 to nonwoven top sheet 16.
  • the un-stretched elastic nonwoven sheet 16 is then bonded at the pleats or corrugation to backsheet 12. Once the adhesive has cured (i.e. , the bonding is completed), these selected portions provide shirred or gathered edges 28, 30 with accompanying folds.
  • These elastic leg encircling crotch areas and/or the elastic waistband areas ensure a tight fit and are important in preventing leakage when worn by an infant or adult user.
  • Diaper 10' comprises a moisture impervious backsheet 12' which has a nonwoven sheet 32 bonded thereto.
  • Backsheet 12' is the same as backsheet 12 described in the first embodiment.
  • Each diaper unit typically has longitudinal margins 18' which define the leg encircling crotch areas and longitudinal margins 20' which are located in the waistband area.
  • the diapers further have transverse margins 22' which further define the ends of the waistband areas.
  • Adhesive attachment tapes 24' are included, as is known. Again, it will be appreciated that hook and loop fasteners (e.g. , Velcro ® fasteners) or other means of fastening may be employed.
  • leg encircling crotch areas of backsheet 12' are longitudinally stretched and/or the waistband areas of backsheet 12' are transversely stretched (to about
  • backsheet 12' prior to bonding of backsheet 12' to nonwoven sheet 32.
  • the backsheet can be stretched at these areas to varying degrees to produce varying elasticity, e.g. , increasing elasticity moving towards the edge.
  • the stretched portions of backsheet 12' are then bonded, while stretched, to nonwoven sheet 32.
  • Backsheet 12' and nonwoven sheet 32 are bonded together by a plurality to adhesive lines 34.
  • the sheets are bonded together by a sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.
  • nonwoven sheet 32 at the leg encircling crotch areas and/or the waistband areas are pleated (which may comprise variable tension pleats) or corrugated, as described hereinbelow, prior to bonding of backsheet 12' to nonwoven sheet 32.
  • the un-stretched elastic backsheet 12' is then bonded at the pleats or corrugation to nonwoven sheet 32.
  • the adhesive has cured (i.e. , the bonding is completed)
  • these selected portions provide shirred or gathered edges 28', 30' with accompanying folds.
  • Nonwoven sheet 32 is comprised of an elastic nonwoven fabric (i.e., a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry) that is multidirectionally stretchable prior to and after attachment to backsheet 12' . These sheets are bonded together as described before. Nonwoven sheet 32 at the leg encircling crotch areas is longitudinally stretched and/or the waistband areas are transversely stretched prior to bonding of backsheet 12' to nonwoven sheet 32. The stretched portions of nonwoven sheet 32 are then bonded, while stretched, to backsheet 12'. The nonwoven sheet can be stretched at these areas to varying degrees to produce varying elasticity, e.g. , increasing elasticity moving towards the edge. Once the adhesive has cured (i.e., the bonding is completed), these selected portions are relieved, resulting in shirred or gathered edges 28', 30' with accompanying folds.
  • an elastic nonwoven fabric i.e., a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry
  • backsheet 12' at the leg encircling crotch areas and/or the waistband areas are pleated (which may comprise variable tension pleats) or corrugated, as described hereinbelow, prior to bonding of backsheet 12' to nonwoven sheet 32.
  • the un-stretched elastic nonwoven sheet 32 is then bonded at the pleats or corrugation to backsheet 12'. Once the adhesive has cured (i.e. , the bonding is completed), these selected portions provide shirred or gathered edges 28', 30' with accompanying folds.
  • a moisture absorbent fluff filler pad 14' is overlaid on sheet 32. This, in turn, is covered with a moisture pervious nonwoven top sheet 16'. Pad 14' and sheet 16' are bonded by a plurality of adhesive lines 26', as described hereinbefore.
  • the elastic leg encircling crotch areas and waistband areas ensure a tight fit and are important in preventing leakage when worn by an infant or adult user.
  • the shirred edges 28', 30' are generally placed under tension and the diaper surface is drawn reasonably flat.
  • This embodiment will allow backsheet 12' with sheet 32 bonded thereto, to have the aforementioned elastic areas (e.g. , the leg encircling crotch areas) prefabricated, whereby this subassembly (i.e., backsheet 12' with sheet 32 bonded thereto) could be supplied on a roll for use in the manufacture of diapers.
  • Diaper 40 comprises a moisture impervious backsheet 42 which is overlaid by a moisture absorbent fluff filler pad (i.e. , absorbent core) 44. This, in turn, is covered with a moisture pervious nonwoven top sheet (i.e., coverstock) 46.
  • coverstock a moisture pervious nonwoven top sheet
  • the diaper of this embodiment has do most diapers, has longitudinal margins which define the leg encircling crotch areas and longitudinal margins which are located in the waistband area.
  • the diapers further have transverse margins which further define the ends of the waistband areas.
  • Adhesive attachment tapes complete the unit, as is known. However, it will be appreciated that hook and loop fasteners (e.g. , Velcro ® fasteners) or other fastener means may be employed.
  • Backsheet 42 comprises a moisture impermeable elastic material (e.g. , a
  • KRATON ® Polymer such as is commercially available from Shell Chemical Company or a polyurethane such as part no. MP-1882P commercially available from the assignee hereof or, a suitable polyethylene or polypropylene) that is multidirectionally stretchable prior to and after attachment to nonwoven top sheet 46.
  • the entire assembly is bonded together by a plurality of adhesive lines, as described below.
  • the assembly is bonded together by a sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.
  • Nonwoven top sheet 46 at the leg encircling crotch areas and the raised leg gathers are pleated, e.g., with triangularly (or other) shaped pleats 54, FIGURE 9, (or corrugated) prior to bonding to allow stretching in this area.
  • the shaped pleats provide a variable degree of stretch.
  • the shape of the pleats and the number of pleats varies widely in practice and any normally used method of pleating can be employed by the present invention.
  • the bonding of the un-stretched backsheet to the nonwoven top sheet, at the pleats (or corrugations) will secure the layers and the pleats while allowing the portions of the diaper having these pleats to be stretched.
  • the backsheet is allowed to stretch, as a result of the bonding to the nonwoven top sheet at the base of the pleats (or corrugations).
  • Cover sheet 46 at the waistband areas is corrugated at 58, FIGURE 10, (or pleated) prior to bonding to allow stretching in this area.
  • the number of corrugations 58 may vary.
  • the bonding of the backsheet to the nonwoven top sheet at the corrugations (or pleats) will secure the layers while allowing the portions of the diaper having these corrugations (or pleats) to be stretched. Once the adhesive has cured (i.e. , the bonding is completed), these selected portions provide shirred or gathered edges with accompanying folds.
  • backsheet 42 is not required to be comprises of an elastic material.
  • Nonwoven top sheet 46 is comprised of an elastic nonwoven fabric (i.e. , a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry) that is multidirectionally stretchable prior to and after attachment to backsheet 42. These sheets are bonded together as described before.
  • Backsheet 42 at the leg encircling crotch areas and the raised leg gathers are pleated, e.g. , with triangularly shaped pleats, (or corrugated) prior to bonding to allow stretching in this area.
  • the bonding of the un-stretched nonwoven top sheet to the backsheet, at the pleats (or corrugations), will secure the layers and the pleats (or corrugations) while allowing the portions of the diaper having these pleats (or corrugations) to be stretched. Accordingly, the nonwoven top sheet is allowed to stretch, as a result of the bonding to the backsheet at the base of the pleats (or corrugations).
  • Backsheet 42 at the waistband areas is corrugated (or pleated), prior to bonding to allow stretching in this area. The number of corrugations may vary.
  • Pad 60 comprises a moisture impervious backsheet 62 which is overlaid by a moismre absorbent core 64. This, in turn, is covered with a moisture pervious nonwoven top sheet (i.e., coverstock) 66.
  • the coverstock has corrugations formed latitudinally at about the longitudinal center thereof, as described more fully hereinbelow.
  • Backsheet 62 comprises a moismre impermeable elastic material (e.g. , a KRATON ® Polymer such as is commercially available from Shell Chemical Company or a polyurethane such as part no. MP-1882P commercially available from the assignee hereof or, a suitable polyethylene or polypropylene) that is multidirectionally stretchable prior to and after attachment to nonwoven top sheet 66.
  • a moismre impermeable elastic material e.g. , a KRATON ® Polymer such as is commercially available from Shell Chemical Company or a polyurethane such as part no. MP-1882P commercially available from the assign
  • pad 60 can be assembled on a form 68, FIGURES 12 - 14.
  • Form 68 is generally rectangular in shape with a curved upper surface 70.
  • a plurality of spaced lateral slots 72 extend across form 68 at about the longitudinal central area thereof.
  • the coverstock 66 is laid on surface 70 of form 68, where the coverstock inserted into slots 72.
  • the absorbent core 64 is disposed on coverstock 66 and the backsheet 62 is laid over the absorbent core.
  • the backsheet and coverstock layers 62, 66 are bonded at the corrugations formed by the insertion of the coverstock in the slots 72. Bonding is accomplished by a suitable adhesive. Alternatively, the bonding is accomplished by a sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.
  • absorbent core 64 comprises a first layer 74 of absorbent material having somewhat of an hourglass shape and a second layer 76 of absorbent material also having somewhat of an hourglass shape with outwardly extending tabs 78 depending therefrom. Tabs 78 are folded inwardly as is clearly shown in FIGURE 20. Thereafter, layers 74 and 76 are stacked with the tabs 78 in between, as shown in FIGURE 21.
  • the pad is shown in a side view after bonding of the backsheet and the coverstock at the corrugations and with the backsheet in an un-stretched state.
  • the pad is shown with the backsheet longitudinally stretched, whereby the remaining periphery about the absorbent core of the backsheet and the coverstock are bonded while in the stretched state.
  • Nonwoven sheet 66 (FIGURE
  • an elastic nonwoven fabric i.e. , a nonwoven fabric inco ⁇ orating elastic fibers, as is known in the industry
  • These elastic areas are important as they aid in the prevention of leakage when worn by a user.
  • the use of an elastic sheet is an important element of the present invention as it can be stretched at various places during the assembly process to produce a three-dimensional products that has a controlled three-dimensional shape on the wearer.
  • Diaper 100 comprises a moisture impervious backsheet 102 which is overlaid by a moisture absorbent fluff filler pad (i.e. , absorbent core) 104. This, in mm, is covered with an elastic sheet 106 followed by a moisture pervious nonwoven top sheet (i.e., coverstock) 108.
  • Elastic sheet 106 has a generally centered oval shape opening 110 therein (i.e. , at the crotch area).
  • elastic sheet and coverstock layers 106, 108 are folded inwardly resulting in the configuration shown in FIGURES 29 - 31, whereby standing leg gathers 112 are formed.
  • elastic sheet 106 is stretched, generally longitudinally as indicated by arrows 114, at the standing leg gathers areas designated A and is stretched, generally longitudinally as indicated by arrows 116, at the leg encircling crotch areas designated B, prior to bonding.
  • the areas designated A are preferably stretched to a greater extent, while the areas designated B are preferably stretched to a lesser extent, such being determined by the particular application of the product.
  • the width of an elasticized area can be expanded to dispurse the forces over a large area.
  • elastic sheet 106 at the stretched areas A is adhesively bonded under tension to coverstock 108 and at the stretched areas B is adhesively bonded to both coverstock 108 and backsheet 102, as indicated by the broken lines.
  • the assembly is bonded together by sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.
  • the elastic can be stretched at these areas to varying degrees to produce varying elasticity, e.g., increasing elasticity moving towards the edge.
  • the diaper of this embodiment has do most diapers, has longitudinal margins which define the leg encircling crotch area and longitudinal margins which are located in the waistband area.
  • the diapers further have transverse margins which further define the ends of the waistband areas.
  • Adhesive attachment tapes complete the unit, as is known.
  • hook and loop fasteners e.g. , Velcro ® fasteners
  • other fasteners means may be employed.
  • the waistband areas of the elastic sheet 106 are transversely stretched prior to adhesive bonding under tension of the elastic sheet 106 to the coverstock 108 and backsheet 102.
  • the elastic can be stretched at these areas to varying degrees to produce varying elasticity, e.g. , increasing elasticity moving towards the edge.
  • cover sheet 108 and backsheet 102 are cooperatively corrugated (or pleated), as described hereinbefore, prior to bonding to allow stretching in this area.
  • the number of corrugations (or pleats) may vary.
  • the bonding of the backsheet and the cover sheet at the corrugations (or pleats) to the elastic sheet will secure the layers while allowing the portions of the diaper having these corrugations (or pleats) to be stretched. Once the adhesive has cured (i.e. , the bonding is completed), these selected portions provide shirred or gathered edges with accompanying folds.
  • the standing leg gathers 112 are folded inwardly, as shown in FIGURES 36 and 37, resulting in the configuration shown in FIGURES 38 and 39.
  • the standing leg gathers 112 are then bonded at the areas indicated in FIGURE 39. Thereafter, leg cutouts are made along lines 120 (FIGURE 40) to define the leg encircling crotch areas.
  • Elastic sheet 106 comprises a moisture impermeable elastic material (e.g. , a KRATON ® Polymer such as is commercially available from Shell Chemical Company or a polyurethane such as part no. MP-1882P commercially available from the assignee hereof or, a suitable polyethylene or polypropylene) that is multidirectionally stretchable prior to and after attachment to the coverstock and/or backsheet.
  • a moisture impermeable elastic material e.g. , a KRATON ® Polymer such as is commercially available from Shell Chemical Company or a polyurethane such as part no. MP-1882P commercially available from the assignee hereof or, a suitable polyethylene or polypropylene
  • the entire assembly is bonded together by a plurality of adhesive lines, as described hereinbefore.
  • the assembly is bonded together by a sonobonding, ultrasonic welding/bonding, thermobonding or any other suitable method.

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

Abstract

Les produits absorbants élastiqués selon l'invention, tels que des couches jetables (10), des culottes de propreté, des serviettes hygiéniques et des coussinets d'incontinence jetables pour adultes, comprennent une feuille de support étanche à l'humidité (12) qui est recouverte d'un coussinet à produit de remplissage pelucheux absorbant l'humidité (14). Ce dernier est à son tour recouvert d'une feuille supérieure laissant filtrer l'humidité (16). La feuille de support (12) est recouverte d'une feuille filtrante (16). La feuille de support (12) ou la feuille supérieure non tissée (16) comporte un matériau élastique qui peut s'étirer dans des sens multiples avant et après la fixation des feuilles. Une feuille élastique séparée peut également être ajoutée à l'ensemble, laquelle peut être étirée dans des sens multiples avant et après la fixation des autres feuilles.
PCT/US1997/008594 1996-05-21 1997-05-21 Produits absorbants elastiques WO1997043994A1 (fr)

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AU32085/97A AU3208597A (en) 1996-05-21 1997-05-21 Elasticized absorbent products

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US65202596A 1996-05-21 1996-05-21
US08/652,025 1996-05-21

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6149638A (en) * 1997-12-31 2000-11-21 Kimberly-Clark Worldwide, Inc. Extensible absorbent article including folded layers adjacent the absorbent core
US6193701B1 (en) 1997-12-31 2001-02-27 Kimberly-Clark Worldwide, Inc. Personal care article having zones with different resistance-to stretch
SG79305A1 (en) * 1999-04-13 2001-03-20 Uni Charm Corp Disposable diaper
EP0998893A3 (fr) * 1998-10-30 2001-10-17 Uni-Charm Corporation Serviette hygiénique
WO2003030774A2 (fr) * 2001-10-09 2003-04-17 Paragon Trade Brands, Inc. Article absorbant molletonne
EP1374815A2 (fr) * 2002-06-24 2004-01-02 Uni-Charm Corporation Vêtement jetable de type ouvert
US7967804B2 (en) 2000-05-30 2011-06-28 Uni-Charm Corporation Disposable diaper and process for making the same
US8043274B2 (en) 2007-12-05 2011-10-25 Kimberly-Clark Worldwide, Inc. Disposable undergarment with stretch areas for optimal fit
US8147476B2 (en) 2003-05-30 2012-04-03 Kimberly-Clark Worldwide, Inc. Disposable absorbent article with overlapping absorbent assembly secured to front and back panels
US8348917B2 (en) 2007-12-05 2013-01-08 Kimberly-Clark Worldwide, Inc. Stretched, necked, unitary garment and a method of manufacturing same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726807A (en) * 1986-04-10 1988-02-23 Weyerhaeuser Company Diaper with elastic margins

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726807A (en) * 1986-04-10 1988-02-23 Weyerhaeuser Company Diaper with elastic margins

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193701B1 (en) 1997-12-31 2001-02-27 Kimberly-Clark Worldwide, Inc. Personal care article having zones with different resistance-to stretch
US6149638A (en) * 1997-12-31 2000-11-21 Kimberly-Clark Worldwide, Inc. Extensible absorbent article including folded layers adjacent the absorbent core
EP0998893A3 (fr) * 1998-10-30 2001-10-17 Uni-Charm Corporation Serviette hygiénique
US6616644B1 (en) 1998-10-30 2003-09-09 Uni-Charm Corporation Sanitary napkin
SG79305A1 (en) * 1999-04-13 2001-03-20 Uni Charm Corp Disposable diaper
US7967804B2 (en) 2000-05-30 2011-06-28 Uni-Charm Corporation Disposable diaper and process for making the same
US6797858B2 (en) * 2001-10-09 2004-09-28 Paragon Trade Brands, Inc. Padded absorbent article
WO2003030774A2 (fr) * 2001-10-09 2003-04-17 Paragon Trade Brands, Inc. Article absorbant molletonne
WO2003030774A3 (fr) * 2001-10-09 2003-11-13 Paragon Trade Brands Inc Article absorbant molletonne
EP1374815A3 (fr) * 2002-06-24 2004-04-21 Uni-Charm Corporation Vêtement jetable de type ouvert
US7122024B2 (en) 2002-06-24 2006-10-17 Uni Charm Corp Open-type disposable wearing article having bifurcated stretchable zones
EP1374815A2 (fr) * 2002-06-24 2004-01-02 Uni-Charm Corporation Vêtement jetable de type ouvert
US8147476B2 (en) 2003-05-30 2012-04-03 Kimberly-Clark Worldwide, Inc. Disposable absorbent article with overlapping absorbent assembly secured to front and back panels
US8664469B2 (en) 2003-05-30 2014-03-04 Kimberly-Clark Worldwide, Inc. Disposable absorbent article with overlapping absorbent assembly secured to front and back panels
US9433539B2 (en) 2003-05-30 2016-09-06 Kimberly-Clark Worldwide, Inc. Disposable absorbent article with overlapping absorbent assembly secured to front and back panels
US8043274B2 (en) 2007-12-05 2011-10-25 Kimberly-Clark Worldwide, Inc. Disposable undergarment with stretch areas for optimal fit
US8348917B2 (en) 2007-12-05 2013-01-08 Kimberly-Clark Worldwide, Inc. Stretched, necked, unitary garment and a method of manufacturing same

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