WO2005122984A1 - Absorbent article comprising an elastic laminate - Google Patents

Absorbent article comprising an elastic laminate Download PDF

Info

Publication number
WO2005122984A1
WO2005122984A1 PCT/SE2004/001004 SE2004001004W WO2005122984A1 WO 2005122984 A1 WO2005122984 A1 WO 2005122984A1 SE 2004001004 W SE2004001004 W SE 2004001004W WO 2005122984 A1 WO2005122984 A1 WO 2005122984A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
elastic laminate
region
absorbent article
elastic
Prior art date
Application number
PCT/SE2004/001004
Other languages
French (fr)
Inventor
Jan WÄSTLUND-KARLSSON
Margareta WENNERBÄCK
Original Assignee
Sca Hygiene Products Ab
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
Priority to JP2007517993A priority Critical patent/JP4980898B2/en
Application filed by Sca Hygiene Products Ab filed Critical Sca Hygiene Products Ab
Priority to BRPI0418920A priority patent/BRPI0418920B8/en
Priority to CA002569109A priority patent/CA2569109A1/en
Priority to MXPA06014147A priority patent/MXPA06014147A/en
Priority to US11/630,372 priority patent/US8052665B2/en
Priority to PCT/SE2004/001004 priority patent/WO2005122984A1/en
Priority to EP04749042.0A priority patent/EP1758534B1/en
Priority to CNB2004800434109A priority patent/CN100553597C/en
Priority to AU2004320744A priority patent/AU2004320744B2/en
Priority to TW094115350A priority patent/TW200608950A/en
Priority to ARP050102289A priority patent/AR048985A1/en
Publication of WO2005122984A1 publication Critical patent/WO2005122984A1/en
Priority to TNP2006000426A priority patent/TNSN06426A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic 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
    • A61F13/45—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
    • A61F13/491—Absorbent articles specially adapted to be worn around the waist, e.g. diapers specially adapted for gender distinct urine discharge pattern
    • 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
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Definitions

  • Absorbent article comprising an elastic laminate
  • the present invention refers to a pant type absorbent article such as a pant diaper, a sanitary pant or incontinence garment, said article having a core region comprising an absorbent core and a chassis region surrounding the core region, said chassis region comp ⁇ sing front, back and waist regions, while the core region is located at least in a crotch portion of the article, a liquid impermeable backsheet is arranged at least in the core region on the garment facing side of the absorbent core and a liquid permeable topsheet is arranged at least in the core region on the wearer facing side of the absorbent core.
  • Absorbent articles having defined core regions and chassis regions are supposed to have a comfortable fit about the wearer.
  • pant articles like pant diapers, sanitary pants and incontinence pants it is also desirable that the articles are capable of being pulled up and down over the hips of the wearer to allow the wearer or caregiver to easily put on and remove the article when it has been soiled.
  • absorbent pants with elasticized stretchable side panels and waist portion, usually comprising elastic members, such as elastic threads, contractably affixed between the backsheet and the topsheet.
  • Such laminates may include a layer of meltblown elastomeric fibers which have been stretched and sandwiched between outer layers of spunbonded webs.
  • US 6,552,245 discloses an extensible outer cover for an absorbent article which provides a certain permanent deformation when subjected to a tensile force.
  • the extensible outer cover comprises a necked laminate in the form of one film sheet laminated to a necked film. Both films may be non-elastic. The films may further be breathable.
  • WO 03/047488 discloses an elastic laminate comprising an elastic film which on opposite sides is bonded to first and second non-elastic fibrous layers.
  • the laminate is made by bonding the non-elastic fibrous layers to the elastic film layer and after that stretch the composite material causing the non-elastic materials to break.
  • the elastic film material may be of a breathable material.
  • the laminate may be incorporated in an absorbent article.
  • the object of the present invention is to provide an absorbent article having a core region and a chassis region and which combines properties of comfort and fit to the wearer ' s body and a soft and cloth-like feeling close to textile materials.
  • said article at least in part of the chassis region comprises a outer coversheet in the form of an elastic laminate having a Softness (S) according to Kawabata of at least 20, wherein the laminate is composed of first and second layers of fibrous material and an elastic film layer located between said first and second fibrous layers.
  • S Softness
  • the elastic laminate has a Softness (S) according to Kawabata of at least 30 and more preferably at least 40.
  • the elastic laminate has a Formability (F) according to Kawabata of no more than 50, preferably no more than 30, more preferably no more than 20 and most preferably no more than 10.
  • the elastic laminate has a Drapability (D) according to Kawabata of no more than 40.
  • the elastic film layer is breathable.
  • the elastic laminate has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m 2 24h and preferably at least 3000 g/m 2 24h.
  • a substantial part of the crotch portion of the article is free from said elastic laminate.
  • said elastic laminate is arranged in at least a substantial part of the front region of the chassis, which in use is intended to be applied over the stomach of the wearer.
  • the surface area of the absorbent core amounts to no more than 30%, preferably no more than 20% of the total surface area of the article as measured in a flat state as shown in Figure 2.
  • said elastic laminate has an elasticity in the transverse direction of the article of at least 30%, preferably at least 50% and more preferably at least 70%, when measured according to the elasticity test specified in the description.
  • the waist region of the chassis region is free from said elastic laminate.
  • the elastic laminate constitutes both the outer and an inner coversheet of the article in at least a part of the chassis region.
  • the article is a pull-up pant product comprising an elastic waist region, which is free from said elastic laminate, a crotch portion which is also free from said elastic laminate and wherein the elastic laminate is arranged in at least a substantial part of the front region of the chassis, which in use is intended to be applied over the stomach of the wearer.
  • said elastic laminate comprises first and second fibrous layers of spunbond material, each having a basis weight of between 10 and 35 g/m 2 , preferably between 12 and 30 g/m 2 , more preferably between 15 and 25 g/m 2 , and a breathable elastic film layer having a basis weight between 20 and 100 g/m 2 , preferably between 20 and 60 g/m 2 .
  • Fig. 1 shows a perspective view of a pant diaper.
  • Fig. 2 shows is a simplified plan view of the pant diaper in its flat, uncontracted state prior to formation.
  • Fig. 3 is a cross section according to the line III-III in Fig. 2.
  • Fig. 4 is a cross section through an elastic laminate according to the invention. Description of preferred embodiments
  • absorbent article refers to products that are placed against the skin of the wearer to absorb and contain body exudates, like urine, faeces and menstrual fluid.
  • the invention mainly refers to disposable absorbent articles, which means articles that are not intended to be laundered or otherwise restored or reused as an absorbent article after use.
  • pant type absorbent articles are referred to having a core region and a chassis region surrounding the core region. Examples of such pant type absorbent articles are pant diapers, sanitary pants and incontinence pants.
  • FIG. 1 show an embodiment of a pant diaper 1 for an infant or an incontinent adult.
  • Said pant diaper typically comprises an absorbent core 2 located in a core region 3 of the article, and a chassis region 4 surrounding the core region.
  • the chassis region comprises front 5, back 6 and waist regions 7.
  • the core region 3 is located in the crotch portion a of the article and extends a certain distance into the front 5 and back regions 6.
  • the crotch portion a is herewith defined as the narrow part of the article intended to be worn in the wearer 's crotch between the legs.
  • the article has a longitudinal direction y and a transverse direction x.
  • the article comprises a liquid permeable topsheet 8 and a liquid impermeable backsheet 9 covering the core region 3.
  • the absorbent core 2 is enclosed between the topsheet and the backsheet.
  • the liquid permeable topsheet 8 can consist of a nonwoven material, e g spunbond, meltblown, carded, hydroentangled, wetlaid etc.
  • Suitable nonwoven materials can be composed of natural fibers, such as woodpulp or cotton fibres, manmade fibres, such as polyester, polyethylene, polypropylene, viscose etc. or from a mixture of natural and manmade fibres.
  • the topsheet material may further be composed of tow fibres, which may be bonded to each other in a bonding pattern, as e.g. disclosed in EP-A-1 035 818.
  • Further examples of topsheet materials are porous foams, apertured plastic films etc.
  • the materials suited as topsheet materials should be soft and non-irritating to the skin and intended to be penetrated by body fluid, e g urine or menstrual fluid.
  • the topsheet may further be different in different parts of the absorbent article.
  • the liquid impervious backsheet 9 covering the core region 3 on the garment facing side of the core is of a liquid impervious material, such as a thin plastic film, e.g. a polyethylene or polypropylene film, a nonwoven material coated with a liquid impervious material, a hydrophobic nonwoven material, which resists liquid penetration or laminates of plastic films and nonwoven materials.
  • the core region backsheet material 9 may be breathable so as to allow vapour to escape from the absorbent core, while still preventing liquids from passing therethrough. Examples of breathable backsheet materials are porous polymeric films, nonwoven laminates from spunbond and meltblown layers, laminates from porous polymeric films and nonwovens.
  • the backsheet 9 is preferably inelastic.
  • the outer coversheet 10 covering the front and rear parts 5 and 6 of the chassis region 4 comprises an elastic laminate 11.
  • the laminate 11 is elastic at least in the transverse x-direction of the article.
  • the elasticity in the x-direction should be at least 30%, preferably at least 50% and more preferably at least 70%, as measured by the elasticity test specified below.
  • the elastic laminate 11 is composed of first and second outer layers of fibrous material 12a and 12b and a middle elastic film layer 13 located between said fibrous layers.
  • the outer fibrous layers 12a and 12 b are chosen to provide a soft and cloth-like feel to the laminate.
  • suitable materials are carded webs and spunbond materials.
  • the basis weight of the fibrous material layers should be between 10 and 35 g/m 2 , preferably between 12 and 30 g/m 2 , more preferably between 15 and 25 g/m 2 .
  • suitable polymers used in the fibrous materials are polyethylene, polypropylene and other polyolefin homopolymers and copolymers, polyester. Natural fibers, for example cotton, may also be used as long as they provide the required soft and cloth-like feel.
  • the middle layer 13 is according to one embodiment of the invention an apertured elastic film having a basis weight between 20 and 100 g/m 2 , preferably between 20 and 60 g/m 2 .
  • the film may be of any suitable elastic polymer, natural or synthetic.
  • suitable materials for the elastic film are low crystallinity polyethylenes, metallocene catalyzed low crystallinity polyethylene, ethylene vinyl acetate copolymers (EVA), polyurethane, polyisoprene, butadiene-styrene copolymers, styrene block copolymers, such as styrene/isoprene/styrene (SIS), styrene/butadiene/styrene (SBS), or styrene/ethylene-butadiene/styrene block copolymer. Blends of these polymers may also be used as well as other modifying elastomeric or non-elastomeric materials.
  • the laminate 11 may be manufactured according to a modified version of the method disclosed in WO 03/047488, wherein one nonwoven layer 12a is applied to the film 13 in a tacky state and will thus bond to the film layer, while the other nonwoven layer 12b is adhesively laminated to the film layer 13 using for example a pressure sensitive hot melt adhesive.
  • the modification lies in that the laminate is incrementally stretched to a point below the elongation at peak load of at least one of the non-elastic nonwoven layers to remain some strength for at least one of the nonwoven layers.
  • the other layer may also be stretched to a point below its elongation at peak load, or to a point at which it will tear during stretching.
  • WO 03/047488 involves stretching of the laminate above the point of failure of the fibrous material, so that the non-elastic layers break completely. Therefore, as described in WO 03/047488, the elongation of the laminate is not limited by the stretch modulus of the non-elastic material.
  • At least one, preferably both fibrous layers which are bound to the elastic film are not completely torn. Selection of fibrous materials which have an elongation at maximum load greater than the elongation at break of the elastic laminate allows the elastic film to stretch during use without being hindered by the fibrous layers.
  • the basis weights of the individual layers of the laminate referred to above relate to the basis weight in the laminate after stretching.
  • the elastic laminate 10 has a breathability (Water Vapour Transmission Rate) according to ASTM E96-00 Procedure D of at least 1500, preferably at least 3000 g/m 2 24h.
  • the absorbent core 2 can be of any conventional kind. Examples of commonly occurring absorbent materials are cellulosic fluff pulp, tissue layers, highly absorbent polymers (so called superabsorbents), absorbent foam materials, absorbent nonwoven materials or the like. It is common to combine cellulosic fluff pulp with superabsorbents in an absorbent body. It is also common to have absorbent bodies comprising layers of different material with different properties with respect to liquid receiving capacity, liquid distribution capacity and storage capacity.
  • the thin absorbent bodies which are common in for example baby diapers and incontinence guards, often comprise a compressed mixed or layered structure of cellulosic fluff pulp and superabsorbent.
  • the size and absorbent capacity of the absorbent core may be varied to be suited for different uses such as for infants or for adult incontinent persons.
  • the pant diaper disclosed in Fig. 1 is intended to enclose the lower part of the wearer ' s trunk like a pair of absorbent pants. It comprises a core region 3 located in the crotch portion a of the article and extending into the front and back regions of the absorbent pants.
  • a chassis region 4 surrounds the core region 3.
  • the core region 3 is defined as the surface area of the article which is occupied by the absorbent core 2 and the areas outside the core which are covered by the liquid-impervious backsheet 9.
  • the chassis region comprises front 5, back 6 and waist regions 7.
  • the front 5 and back regions 6 are joined to each other along their longitudinal edges by ultrasonic welds 15, glue strings or the like.
  • the surface area of the absorbent core 2 amounts to no more than 30% of the total surface area of the article, preferably no more than 20% as measured during flat state of the article as shown in Fig. 2.
  • the elastic laminate 11 may cover the entire article, including the core region 3 and the entire chassis region 4. However according to a preferred embodiment a substantial part of the crotch portion of the article is free from the elastic laminate 11.
  • a "substantial part” used herein refers to at least 50%, preferably at least 75%.
  • the waist region 7 of the chassis region is free from the elastic laminate 11.
  • the waist region 7 comprises a nonwoven material that is elasticized by elastic members 14, such as elastic threads, contractably affixed between material layers, such as nonwoven materials.
  • Such elastic members 14 may also be arranged around the leg openings of the article. Ultrasonic welds 16, glue strings or the like, join the elastic laminate 11 to the elasticized nonwoven in the waist region 7.
  • the liquid-impervious backsheet material 9 underlies the absorbent core 2 and adjacent areas of the chassis region immediately outside the absorbent core 2.
  • the area covered by the liquid-impervious backsheet 9 is defined as the core region 3.
  • a nonwoven material 18 is arranged on the garment facing side of the liquid- impervious backsheet 9 in the crotch portion of the article.
  • the nonwoven material 18 is joined to the elastic laminate 11 by means of ultrasonic welds 17, glue strings or the like.
  • the elastic laminate 11 and the liquid impervious backsheet overlap in the outer parts of the core region 3, as seen in Fig. 2, wherein the elastic laminate 11 is arranged on the garment facing side of the liquid impervious backsheet 9.
  • the elastic laminate 11 is preferably arranged as an outside coversheet material over a substantial part of the chassis region, except for the waist region 7. It is preferred that the elastic laminate is arranged at least over a substantial part of the front region 5 of the chassis region 4, which during use is intended to be applied against the stomach of the wearer.
  • a "substantial part” used herein means at least 50% of the surface area, preferably at least 75% and most preferably at least 90% of the surface area of the front region 5 of the chassis.
  • the elastic laminate 11 preferably also constitutes an inner coversheet of the article in said portions of the chassis region. Thus no additional topsheet material is required in these parts of the article.
  • the elastic laminate should have a Softness (S) according to Kawabata of at least 20, preferably at least 30 and most preferably at least 40.
  • Formability (F) according to Kawabata of no more than 50, preferably no more than 30, more preferably no more than 20 and most preferably no more than 10.
  • the elastic laminate has a Drapability (D) shape to Kawabata of no more than 40.
  • Elasticity test The method measures how an elastic material behaves at repeated load and unload cycles. The sample is stretched to a predetermined elongation and a cyclic movement between 0 and said predetermined elongation is performed. Desired load and unload forces are recorded. The permanent, i.e. remaining, elongation of the relaxed material is measured.
  • a tensile tester Lloyd LRX, able to perform cyclic movements and equipped with a printer/plotter or software presentation is used.
  • the sample is prepared by cutting it to a width of 25 mm and a length that is preferably 20 mm longer than the distance between the clamps in the tensile tester.
  • the tensile tester is calibrated according to the apparatus instructions.
  • the parameters needed for the test are adjusted to: • Crosshead speed: 500 mm/min • Clamp distance: 50 mm • Preload: 0.05 N
  • the sample is placed in the clamps according to the marks and it is made sure that the sample is centered and fastened perpendicularly in the clamps.
  • the tensile tester is started and three cycles between 0 and the predetermined elongation, equal to the highest defined 1 st load, are performed. Before the last cycle the sample is relaxed for 1 minute, then the permanent elongation is measured by stretching the sample until a force of 0.1 N is detected and the elongation is read.
  • the permanent elongation after relaxation should be less than 10% and is measured by the method above.
  • an elasticity of 30% is defined as that the laminate should have a permanent relaxation after elongation of less than 10% after being exerted to an elongation of 30% in the tensile tester above.
  • An elongation of 30% means an elongation to a length that is 30% longer than the initial length of the sample.
  • Kawabata test is a Japanese quality judgment system for used for textile materials and is disclosed in "The Standardization and Analysis of Hand Evaluation (2nd Edition), Sueo Kawabata, July 1980, The Hand Evaluation and Standardization Committee, The Textile Machinery Society of Japan".
  • the test used in this invention uses two of the Kawabata testing machines, KES-FB2 for measuring Bending rigidity, B (gf'cm 2 /c:m), and KES-FBl for measuring Shear stiffness, G (gf/cm -degree) and Tensile strain, EMT (%).
  • the slope was measured between 0.5 cm “1 and 1.5 cm “1 and -0,5 cm “1 and -1,5 cm “1 .
  • Sample effective dimension 20 cm length and 1 cm width; Bending deformation is applied to the width direction.
  • the slope was measured between 0.5 cm “1 and 2.5 cm “1 and -0,5 cm “1 and -2,5 cm “1 . .
  • Sample effective dimension 20 cm width and 5 cm length
  • Sample effective dimension 20 cm width and 2.5 cm length
  • the Drapability (D) according to Kawabata is obtained from the formula:
  • D 116+25- log(B-G/W), wherein W is the basis weight of the sample.
  • the four samples were:
  • Sample laminate (SL) an elastomeric laminate according to the invention comprising an inner apertured three-layer elastomeric film of PE-SEBS-PE, basis weight 36 g/m 2 and two outer layers of spunbond material, PP (polypropylene), each having a basis weight of 22 g/m 2 .
  • the laminate is produced by a modified version of the method disclosed in WO 03/04788, wherein one spunbond layer is applied to the film in a tacky state and will thus bond to the film layer, while the other spunbond layer is adhesively laminated to the film layer using for example a pressure sensitive hot melt adhesive (glue amount 3 g/m 2 ).
  • the laminate is incrementally stretched, at which the non-elastic spunbond layers are stretched to a point below the elongation at peak load to retain some strength in the spunbond layers.
  • the above mentioned basis weights of the layers refers to the finished laminate after stretching.
  • the basis weight of the individual layers were: inner film layer 40 g/m 2 , outer spunbond layers 25 g/m 2 each and glue layer 3 g/m 2 . Since it is difficult to measure the basis weights of the individual layers after lamination and stretching an approximation has been made from the basis weights of the layers before lamination and stretching.
  • the laminate before stretching had a total basis weight before stretching of 93 g/m 2 and after stretching it had a basis weight of 85 g/m 2 , which means a deformation of about 10%. It is then assumed that the deformation of the individual fibrous layers and the film layer is the same, i.e. about 10%.
  • Ref. 1 Cotton-knitted goods, so called jersey with elastomeric threads.
  • Ref. 2 Outer coversheet of Tena Discreet incontinence pant, odour control, size medium, produced by SCA Hygiene Products AB,.
  • the outer coversheet comprises two layers of nonwoven with parallel elastic threads there between, which wrinkle the material.
  • Ref. 3 Outer coversheet material of Po ⁇ se normal super incontinence pant produced by Kimberly-Clark.
  • the outer coversheet comprises two layers of nonwoven with parallel elastic threads there between which wrinkle the material.
  • a climate conditioning of the materials were performed in 20 ° C and 65% RH for 48 hours.
  • the absorbent core was removed and the outer coversheet was stretched over a knitwear measuring device for 24 hours and was then allowed to relax in the same climate during 24 hours.
  • the sizes of the samples were 10 x 10 cm.
  • the test laminate according to the invention has a Softness (S) and a Formability (F) according to Kawabata which is close to cotton -knitted goods (Ref. 1). Also the Drapability (D) according to Kawabata is closer to the cotton-knitted reference material than other two tested materials, used as outer coversheets on conventional incontinence pants.
  • S Softness
  • F Formability
  • D Drapability
  • the use of the elastomeric laminate as outer coversheet material in at least a part of the chassis region of the absorbent pant provides a pant article having a cloth-like feeling close to a cotton material.
  • the pant will also have an excellent comfort and fit to the wearer ' s body.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Laminated Bodies (AREA)

Abstract

A pant type absorbent article such as a pant diaper, a sanitary pant or incontinence pant, said article having a core region (3) comprising an absorbent core (2) and a chassis region (4) surrounding the core region. The article at least in part of the chassis region comprises a outer coversheet (10) in the form of an elastic laminate (11) having a Softness (S) according to Kawabata of at least 20, wherein the laminate is composed of first and second layers of fibrous material (12a, 12b) and an elastic film layer (13) located between said first and second fibrous layers.

Description

Absorbent article comprising an elastic laminate
Technical field
The present invention refers to a pant type absorbent article such as a pant diaper, a sanitary pant or incontinence garment, said article having a core region comprising an absorbent core and a chassis region surrounding the core region, said chassis region compπsing front, back and waist regions, while the core region is located at least in a crotch portion of the article, a liquid impermeable backsheet is arranged at least in the core region on the garment facing side of the absorbent core and a liquid permeable topsheet is arranged at least in the core region on the wearer facing side of the absorbent core.
Background of the invention
Absorbent articles having defined core regions and chassis regions are supposed to have a comfortable fit about the wearer. For pant articles like pant diapers, sanitary pants and incontinence pants it is also desirable that the articles are capable of being pulled up and down over the hips of the wearer to allow the wearer or caregiver to easily put on and remove the article when it has been soiled. It is thus known to make such absorbent pants with elasticized stretchable side panels and waist portion, usually comprising elastic members, such as elastic threads, contractably affixed between the backsheet and the topsheet.
It is further known to make portions of the chassis of absorbent articles of an elastic material, such as stretch-bonded laminates. Such laminates may include a layer of meltblown elastomeric fibers which have been stretched and sandwiched between outer layers of spunbonded webs.
US 6,552,245 discloses an extensible outer cover for an absorbent article which provides a certain permanent deformation when subjected to a tensile force. The extensible outer cover comprises a necked laminate in the form of one film sheet laminated to a necked film. Both films may be non-elastic. The films may further be breathable.
WO 03/047488 discloses an elastic laminate comprising an elastic film which on opposite sides is bonded to first and second non-elastic fibrous layers. The laminate is made by bonding the non-elastic fibrous layers to the elastic film layer and after that stretch the composite material causing the non-elastic materials to break. The elastic film material may be of a breathable material. The laminate may be incorporated in an absorbent article.
Further examples of absorbent articles which in part are made of elastic laminates are found in US 6,476,289 and JP 10043235.
There is however still room for improvement with respect to comfort, fit and clothlike feel of absorbent articles of the above mentioned type.
Object and most important features of the invention
The object of the present invention is to provide an absorbent article having a core region and a chassis region and which combines properties of comfort and fit to the wearer 's body and a soft and cloth-like feeling close to textile materials. These and further objects have according to the invention been accomplished by the fact that said article at least in part of the chassis region comprises a outer coversheet in the form of an elastic laminate having a Softness (S) according to Kawabata of at least 20, wherein the laminate is composed of first and second layers of fibrous material and an elastic film layer located between said first and second fibrous layers.
Preferably the elastic laminate has a Softness (S) according to Kawabata of at least 30 and more preferably at least 40.
According to one aspect of the invention the elastic laminate has a Formability (F) according to Kawabata of no more than 50, preferably no more than 30, more preferably no more than 20 and most preferably no more than 10.
In one embodiment the elastic laminate has a Drapability (D) according to Kawabata of no more than 40.
In a further embodiment the elastic film layer is breathable.
In one aspect of the invention the elastic laminate has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m2 24h and preferably at least 3000 g/m2 24h.
According to a further embodiment a substantial part of the crotch portion of the article is free from said elastic laminate. According to one aspect of the invention said elastic laminate is arranged in at least a substantial part of the front region of the chassis, which in use is intended to be applied over the stomach of the wearer.
According to a further aspect of the invention the surface area of the absorbent core amounts to no more than 30%, preferably no more than 20% of the total surface area of the article as measured in a flat state as shown in Figure 2.
According to a further embodiment said elastic laminate has an elasticity in the transverse direction of the article of at least 30%, preferably at least 50% and more preferably at least 70%, when measured according to the elasticity test specified in the description.
For certain applications it is preferred that the waist region of the chassis region is free from said elastic laminate.
In one embodiment of the invention the elastic laminate constitutes both the outer and an inner coversheet of the article in at least a part of the chassis region.
In a further aspect of the invention the article is a pull-up pant product comprising an elastic waist region, which is free from said elastic laminate, a crotch portion which is also free from said elastic laminate and wherein the elastic laminate is arranged in at least a substantial part of the front region of the chassis, which in use is intended to be applied over the stomach of the wearer.
According to one embodiment said elastic laminate comprises first and second fibrous layers of spunbond material, each having a basis weight of between 10 and 35 g/m2, preferably between 12 and 30 g/m2, more preferably between 15 and 25 g/m2, and a breathable elastic film layer having a basis weight between 20 and 100 g/m2 , preferably between 20 and 60 g/m2.
Description of drawings
Fig. 1 shows a perspective view of a pant diaper.
Fig. 2 shows is a simplified plan view of the pant diaper in its flat, uncontracted state prior to formation.
Fig. 3 is a cross section according to the line III-III in Fig. 2.
Fig. 4 is a cross section through an elastic laminate according to the invention. Description of preferred embodiments
The invention will in the following be closer described with reference to some embodiments shown in the accompanying drawings.
Absorbent article
The term "absorbent article" refers to products that are placed against the skin of the wearer to absorb and contain body exudates, like urine, faeces and menstrual fluid. The invention mainly refers to disposable absorbent articles, which means articles that are not intended to be laundered or otherwise restored or reused as an absorbent article after use. According to the invention pant type absorbent articles are referred to having a core region and a chassis region surrounding the core region. Examples of such pant type absorbent articles are pant diapers, sanitary pants and incontinence pants.
The drawings show an embodiment of a pant diaper 1 for an infant or an incontinent adult. Said pant diaper typically comprises an absorbent core 2 located in a core region 3 of the article, and a chassis region 4 surrounding the core region. The chassis region comprises front 5, back 6 and waist regions 7. The core region 3 is located in the crotch portion a of the article and extends a certain distance into the front 5 and back regions 6. The crotch portion a is herewith defined as the narrow part of the article intended to be worn in the wearer 's crotch between the legs. The article has a longitudinal direction y and a transverse direction x.
The article comprises a liquid permeable topsheet 8 and a liquid impermeable backsheet 9 covering the core region 3. The absorbent core 2 is enclosed between the topsheet and the backsheet.
Topsheet
The liquid permeable topsheet 8 can consist of a nonwoven material, e g spunbond, meltblown, carded, hydroentangled, wetlaid etc. Suitable nonwoven materials can be composed of natural fibers, such as woodpulp or cotton fibres, manmade fibres, such as polyester, polyethylene, polypropylene, viscose etc. or from a mixture of natural and manmade fibres. The topsheet material may further be composed of tow fibres, which may be bonded to each other in a bonding pattern, as e.g. disclosed in EP-A-1 035 818. Further examples of topsheet materials are porous foams, apertured plastic films etc. The materials suited as topsheet materials should be soft and non-irritating to the skin and intended to be penetrated by body fluid, e g urine or menstrual fluid. The topsheet may further be different in different parts of the absorbent article. Backsheet
The liquid impervious backsheet 9 covering the core region 3 on the garment facing side of the core, is of a liquid impervious material, such as a thin plastic film, e.g. a polyethylene or polypropylene film, a nonwoven material coated with a liquid impervious material, a hydrophobic nonwoven material, which resists liquid penetration or laminates of plastic films and nonwoven materials. The core region backsheet material 9 may be breathable so as to allow vapour to escape from the absorbent core, while still preventing liquids from passing therethrough. Examples of breathable backsheet materials are porous polymeric films, nonwoven laminates from spunbond and meltblown layers, laminates from porous polymeric films and nonwovens. The backsheet 9 is preferably inelastic.
Outer coversheet The outer coversheet 10 covering the front and rear parts 5 and 6 of the chassis region 4 comprises an elastic laminate 11. The laminate 11 is elastic at least in the transverse x-direction of the article. The elasticity in the x-direction should be at least 30%, preferably at least 50% and more preferably at least 70%, as measured by the elasticity test specified below.
The elastic laminate 11 is composed of first and second outer layers of fibrous material 12a and 12b and a middle elastic film layer 13 located between said fibrous layers. The outer fibrous layers 12a and 12 b are chosen to provide a soft and cloth-like feel to the laminate. Examples of suitable materials are carded webs and spunbond materials. The basis weight of the fibrous material layers should be between 10 and 35 g/m2, preferably between 12 and 30 g/m2, more preferably between 15 and 25 g/m2. Examples of suitable polymers used in the fibrous materials are polyethylene, polypropylene and other polyolefin homopolymers and copolymers, polyester. Natural fibers, for example cotton, may also be used as long as they provide the required soft and cloth-like feel.
The middle layer 13 is according to one embodiment of the invention an apertured elastic film having a basis weight between 20 and 100 g/m2, preferably between 20 and 60 g/m2. The film may be of any suitable elastic polymer, natural or synthetic. Some examples of suitable materials for the elastic film are low crystallinity polyethylenes, metallocene catalyzed low crystallinity polyethylene, ethylene vinyl acetate copolymers (EVA), polyurethane, polyisoprene, butadiene-styrene copolymers, styrene block copolymers, such as styrene/isoprene/styrene (SIS), styrene/butadiene/styrene (SBS), or styrene/ethylene-butadiene/styrene block copolymer. Blends of these polymers may also be used as well as other modifying elastomeric or non-elastomeric materials. One example of a suitable film is an apertured three-layer elastomeric film of PE-SEBS-PE.
The laminate 11 may be manufactured according to a modified version of the method disclosed in WO 03/047488, wherein one nonwoven layer 12a is applied to the film 13 in a tacky state and will thus bond to the film layer, while the other nonwoven layer 12b is adhesively laminated to the film layer 13 using for example a pressure sensitive hot melt adhesive. The modification lies in that the laminate is incrementally stretched to a point below the elongation at peak load of at least one of the non-elastic nonwoven layers to remain some strength for at least one of the nonwoven layers. The other layer may also be stretched to a point below its elongation at peak load, or to a point at which it will tear during stretching.
The method disclosed in WO 03/047488 involves stretching of the laminate above the point of failure of the fibrous material, so that the non-elastic layers break completely. Therefore, as described in WO 03/047488, the elongation of the laminate is not limited by the stretch modulus of the non-elastic material.
In contrast to the method described in WO 03/047488, upon manufacture of a laminate according to the present invention, at least one, preferably both fibrous layers which are bound to the elastic film are not completely torn. Selection of fibrous materials which have an elongation at maximum load greater than the elongation at break of the elastic laminate allows the elastic film to stretch during use without being hindered by the fibrous layers.
The basis weights of the individual layers of the laminate referred to above relate to the basis weight in the laminate after stretching.
It is preferred that the elastic laminate 10 has a breathability (Water Vapour Transmission Rate) according to ASTM E96-00 Procedure D of at least 1500, preferably at least 3000 g/m2 24h.
Absorbent core
The absorbent core 2 can be of any conventional kind. Examples of commonly occurring absorbent materials are cellulosic fluff pulp, tissue layers, highly absorbent polymers (so called superabsorbents), absorbent foam materials, absorbent nonwoven materials or the like. It is common to combine cellulosic fluff pulp with superabsorbents in an absorbent body. It is also common to have absorbent bodies comprising layers of different material with different properties with respect to liquid receiving capacity, liquid distribution capacity and storage capacity. The thin absorbent bodies, which are common in for example baby diapers and incontinence guards, often comprise a compressed mixed or layered structure of cellulosic fluff pulp and superabsorbent. The size and absorbent capacity of the absorbent core may be varied to be suited for different uses such as for infants or for adult incontinent persons.
Pant diaper
The pant diaper disclosed in Fig. 1 is intended to enclose the lower part of the wearer 's trunk like a pair of absorbent pants. It comprises a core region 3 located in the crotch portion a of the article and extending into the front and back regions of the absorbent pants. A chassis region 4 surrounds the core region 3. The core region 3 is defined as the surface area of the article which is occupied by the absorbent core 2 and the areas outside the core which are covered by the liquid-impervious backsheet 9. The chassis region comprises front 5, back 6 and waist regions 7. The front 5 and back regions 6 are joined to each other along their longitudinal edges by ultrasonic welds 15, glue strings or the like.
According to one embodiment of the invention the surface area of the absorbent core 2 amounts to no more than 30% of the total surface area of the article, preferably no more than 20% as measured during flat state of the article as shown in Fig. 2.
The elastic laminate 11 may cover the entire article, including the core region 3 and the entire chassis region 4. However according to a preferred embodiment a substantial part of the crotch portion of the article is free from the elastic laminate 11. A "substantial part" used herein refers to at least 50%, preferably at least 75%. Preferably also the waist region 7 of the chassis region is free from the elastic laminate 11. The waist region 7 comprises a nonwoven material that is elasticized by elastic members 14, such as elastic threads, contractably affixed between material layers, such as nonwoven materials. Such elastic members 14 may also be arranged around the leg openings of the article. Ultrasonic welds 16, glue strings or the like, join the elastic laminate 11 to the elasticized nonwoven in the waist region 7.
The liquid-impervious backsheet material 9 underlies the absorbent core 2 and adjacent areas of the chassis region immediately outside the absorbent core 2. The area covered by the liquid-impervious backsheet 9 is defined as the core region 3. A nonwoven material 18 is arranged on the garment facing side of the liquid- impervious backsheet 9 in the crotch portion of the article. The nonwoven material 18 is joined to the elastic laminate 11 by means of ultrasonic welds 17, glue strings or the like. The elastic laminate 11 and the liquid impervious backsheet overlap in the outer parts of the core region 3, as seen in Fig. 2, wherein the elastic laminate 11 is arranged on the garment facing side of the liquid impervious backsheet 9.
The elastic laminate 11 is preferably arranged as an outside coversheet material over a substantial part of the chassis region, except for the waist region 7. It is preferred that the elastic laminate is arranged at least over a substantial part of the front region 5 of the chassis region 4, which during use is intended to be applied against the stomach of the wearer. A "substantial part" used herein means at least 50% of the surface area, preferably at least 75% and most preferably at least 90% of the surface area of the front region 5 of the chassis. The elastic laminate 11 preferably also constitutes an inner coversheet of the article in said portions of the chassis region. Thus no additional topsheet material is required in these parts of the article.
No additional elasticized side panels joining the front and back regions 5 and 6 are needed when using the elastic laminate 11 according to the invention. However, if desired, additional elasticized side panels may of course be provided, especially in cases where the elastic laminate 11 is arranged only in parts of the front and/or back regions.
The elastic laminate should have a Softness (S) according to Kawabata of at least 20, preferably at least 30 and most preferably at least 40.
It is further desired that it has a Formability (F) according to Kawabata of no more than 50, preferably no more than 30, more preferably no more than 20 and most preferably no more than 10.
It is also desired that the elastic laminate has a Drapability (D) shape to Kawabata of no more than 40. Description of test methods
Elasticity test The method measures how an elastic material behaves at repeated load and unload cycles. The sample is stretched to a predetermined elongation and a cyclic movement between 0 and said predetermined elongation is performed. Desired load and unload forces are recorded. The permanent, i.e. remaining, elongation of the relaxed material is measured.
A tensile tester, Lloyd LRX, able to perform cyclic movements and equipped with a printer/plotter or software presentation is used. The sample is prepared by cutting it to a width of 25 mm and a length that is preferably 20 mm longer than the distance between the clamps in the tensile tester.
The tensile tester is calibrated according to the apparatus instructions. The parameters needed for the test (load and unload forces) are adjusted to: • Crosshead speed: 500 mm/min • Clamp distance: 50 mm • Preload: 0.05 N
The sample is placed in the clamps according to the marks and it is made sure that the sample is centered and fastened perpendicularly in the clamps. The tensile tester is started and three cycles between 0 and the predetermined elongation, equal to the highest defined 1st load, are performed. Before the last cycle the sample is relaxed for 1 minute, then the permanent elongation is measured by stretching the sample until a force of 0.1 N is detected and the elongation is read.
The permanent elongation after relaxation should be less than 10% and is measured by the method above. Thus an elasticity of 30% is defined as that the laminate should have a permanent relaxation after elongation of less than 10% after being exerted to an elongation of 30% in the tensile tester above. An elongation of 30% means an elongation to a length that is 30% longer than the initial length of the sample.
Kawabata test The Kawabata KES-FB test is a Japanese quality judgment system for used for textile materials and is disclosed in "The Standardization and Analysis of Hand Evaluation (2nd Edition), Sueo Kawabata, July 1980, The Hand Evaluation and Standardization Committee, The Textile Machinery Society of Japan". The test used in this invention uses two of the Kawabata testing machines, KES-FB2 for measuring Bending rigidity, B (gf'cm2/c:m), and KES-FBl for measuring Shear stiffness, G (gf/cm -degree) and Tensile strain, EMT (%).
Bending rigidity (B) KES-FB2
The slope was measured between 0.5 cm"1 and 1.5 cm"1 and -0,5 cm"1 and -1,5 cm"1. The measurements were performed in both directions (machine direction, MD, and cross direction, CD) with the following settings: Total sample area : 20 x 20 cm; Maximum curvature: Kmax=±2,5 cm"1; Bending rate: 0.5 cm'Vsec;
Sample effective dimension: 20 cm length and 1 cm width; Bending deformation is applied to the width direction.
Shear stiffness (G) KES-FBl
The slope was measured between 0.5 cm"1 and 2.5 cm"1 and -0,5 cm"1 and -2,5 cm"1. .
The measurements were performed in both directions (MD and CD) with the following settings:
Total sample area: 20 x 20 cm; Tension of specimen: W= W=10gf/cm;
Maximum shear angle: φ=±8° .
Sample effective dimension: 20 cm width and 5 cm length;
Shear deformation is applied to the width direction.
Tensile strain (EMT)
The measurements were performed in both directions (MD and CD) with the following settings:
Total sample area: 20 x 20 cm;
Maximum load: Fm= 500 gf/cm; Tensile speed: 0.2 mm/sec.
Sample effective dimension: 20 cm width and 2.5 cm length;
Tensile deformation is applied to the length direction.
Elongation sens 50 mm/lOV.
Softness (S)
The Softness (S) according to Kawabata is obtained from the formula:
Figure imgf000011_0001
Formability (F)
The Formability (F) according to Kawabata is obtained from the formula : F=B-EMT.
Drapability (D)
The Drapability (D) according to Kawabata is obtained from the formula:
D=116+25- log(B-G/W), wherein W is the basis weight of the sample.
Example
Four different samples were measured in a Kawabata test with respect to Bending rigidity (B), Shear stiffness (G) and Tensile strain (EMT). From these measured values the Softness (S), Formability (F) and Drapability (D) were calculated.
The four samples were:
Sample laminate (SL): an elastomeric laminate according to the invention comprising an inner apertured three-layer elastomeric film of PE-SEBS-PE, basis weight 36 g/m2 and two outer layers of spunbond material, PP (polypropylene), each having a basis weight of 22 g/m2. The laminate is produced by a modified version of the method disclosed in WO 03/04788, wherein one spunbond layer is applied to the film in a tacky state and will thus bond to the film layer, while the other spunbond layer is adhesively laminated to the film layer using for example a pressure sensitive hot melt adhesive (glue amount 3 g/m2). The laminate is incrementally stretched, at which the non-elastic spunbond layers are stretched to a point below the elongation at peak load to retain some strength in the spunbond layers.
The above mentioned basis weights of the layers refers to the finished laminate after stretching. Before stretching the basis weight of the individual layers were: inner film layer 40 g/m2, outer spunbond layers 25 g/m2 each and glue layer 3 g/m2. Since it is difficult to measure the basis weights of the individual layers after lamination and stretching an approximation has been made from the basis weights of the layers before lamination and stretching. The laminate before stretching had a total basis weight before stretching of 93 g/m2 and after stretching it had a basis weight of 85 g/m2, which means a deformation of about 10%. It is then assumed that the deformation of the individual fibrous layers and the film layer is the same, i.e. about 10%. Ref. 1 : Cotton-knitted goods, so called jersey with elastomeric threads.
Ref. 2: Outer coversheet of Tena Discreet incontinence pant, odour control, size medium, produced by SCA Hygiene Products AB,. The outer coversheet comprises two layers of nonwoven with parallel elastic threads there between, which wrinkle the material.
Ref. 3: Outer coversheet material of Poϊse normal super incontinence pant produced by Kimberly-Clark. The outer coversheet comprises two layers of nonwoven with parallel elastic threads there between which wrinkle the material.
A climate conditioning of the materials were performed in 20°C and 65% RH for 48 hours. For the pant products the absorbent core was removed and the outer coversheet was stretched over a knitwear measuring device for 24 hours and was then allowed to relax in the same climate during 24 hours.
The sizes of the samples were 10 x 10 cm.
All tests were made on three samples and in two material directions (machine direction, MD, and cross direction, CD).
The following results were obtained.
Table 1
Figure imgf000013_0001
From these results the Softness (S), the Drapability (D) and the Formability (F) according to Kawabata were calculated according to the formulas stated above. These results are stated in Table 2 below.
Table 2
Figure imgf000014_0001
The results should be interpreted in the following way: Softness (S) : a higher value indicates a softer material. Drapability (D) : a higher value indicates a stiffer material. Formability (F) : a higher value indicates that the material is less formable.
The test laminate according to the invention has a Softness (S) and a Formability (F) according to Kawabata which is close to cotton -knitted goods (Ref. 1). Also the Drapability (D) according to Kawabata is closer to the cotton-knitted reference material than other two tested materials, used as outer coversheets on conventional incontinence pants. Thus the use of the elastomeric laminate as outer coversheet material in at least a part of the chassis region of the absorbent pant provides a pant article having a cloth-like feeling close to a cotton material. The pant will also have an excellent comfort and fit to the wearer 's body. By using the elastomeric laminate only in those part of the pant in which the properties of the material is best utilized, a very economic utilization of the material is accomplished.

Claims

Claims
1. A pant type absorbent article such as a pant diaper, a sanitary pant or incontinence pant, said article having a core region (3) comprising an absorbent core (2) and a chassis region (4) surrounding the core region, said chassis region comprising front, back and waist regions (5, 6 and 7), while the core region is located at least in a crotch portion (a) of the article, a liquid impermeable backsheet (9) is arranged at least in the core region (3) on the garment facing side of the absorbent core (2) and a liquid permeable topsheet (8) is arranged at least in the core region (3) on the wearer facing side of the absorbent core (2), said article having a longitudinal (y) and a transverse direction (x), cha ra cterized i n said article at least in part of the chassis region comprises a outer coversheet (10) in the form of an elastic laminate (11) having a Softness (S) according to Kawabata of at least 20, wherein the laminate is composed of first and second layers of fibrous material (12a, 12b) and an elastic film layer (13) located between said first and second fibrous layers.
2. The absorbent article as claimed in claim 1, cha ra cte rized i n that said elastic laminate (11) has a Softness (S) according to Kawabata of at least 30 and preferably at least 40.
3. The absorbent article as claimed in claim 1 or 2, cha racterized i n that said elastic laminate (11) has a Formability (F) according to Kawabata of no more than 50.
4. The absorbent article as claimed in claim 3, cha ra cterized i n that said elastic laminate (11) has a Formability (F) according to Kawabata of no more than 30, preferably no more than 20 and more preferably no more than 10.
5. The absorbent article as claimed in any of claims 1-4, cha ra cterized i n that said elastic laminate (11) has a Drapability (D) according to Kawabata of no more than 40.
6. The absorbent article as claimed in any of the preceding claims, characterized in that said elastic film layer (13) is breathable.
7. The absorbent article as claimed in claim 6, characterized in that said elastic laminate (11) has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500, preferably at least 3000 g/m224h.
8. The absorbent article as claimed in any of the preceding claims, characterized i n that said elastic laminate (11) has an elasticity in the transverse direction (x) of the article of at least 30%, preferably at least 50% and more preferably at least 70% when measured according to the elasticity test specified in the description.
9. The absorbent article as claimed in any of the preceding claims, characterized i n that a substantial part of the crotch portion (a) of the article is free from said elastic laminate.
10. The absorbent article as claimed in claim 9, characterized in that the waist region (7) of the chassis region (4) is free from said elastic laminate.
11. The absorbent article as claimed in claim 9 or 10, characterized in that said elastic laminate (11) is arranged in at least a substantial part of the front region (5) of the chassis, which in use is intended to be applied over the stomach of the wearer.
12. The absorbent article as claimed in any of the preceding claims, characterized in that the surface area of the absorbent core (2) amounts to no more than 30% of the total surface area of the article as measured in a flat state of the article.
13. The absorbent article as claimed in any of the preceding claims, cha racterized i n that the article is a pull-up pant product comprising an elasticized waist region (7), which is free from said elastic laminate (11), a crotch portion (a) which is also free from said elastic laminate and wherein the elastic laminate is arranged in at least a substantial part of the front region (5) of the chassis, which in use is intended to be applied over the stomach of the wearer.
14. The absorbent article as claimed in any of the preceding claims, characterized in that said elastic laminate (11) comprises first and second fibrous layers (12a, 12b) of spunbond material, each having a basis weight of between 10 and 35 g/m2, preferably between 12 and 30 g/m2, more preferably 15 and 25 g/m2 and a breathable elastic film layer (13) having a basis weight between 20 and 100 g/m2, preferably between 20 and 60 g/m2, said elastic laminate having a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500, preferably at least 3000 g/m224h.
PCT/SE2004/001004 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate WO2005122984A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
PCT/SE2004/001004 WO2005122984A1 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate
BRPI0418920A BRPI0418920B8 (en) 2004-06-22 2004-06-22 absorbent article comprising an elastic laminate
CA002569109A CA2569109A1 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate
MXPA06014147A MXPA06014147A (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate.
US11/630,372 US8052665B2 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate
JP2007517993A JP4980898B2 (en) 2004-06-22 2004-06-22 Absorbent article with elastic laminate
EP04749042.0A EP1758534B1 (en) 2004-06-22 2004-06-22 Method for making an absorbent article comprising an elastic laminate
CNB2004800434109A CN100553597C (en) 2004-06-22 2004-06-22 The absorbent article that comprises elastic laminate
AU2004320744A AU2004320744B2 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate
TW094115350A TW200608950A (en) 2004-06-22 2005-05-12 Absorbent article comprising an elastic laminate
ARP050102289A AR048985A1 (en) 2004-06-22 2005-06-03 ABSORBENT ARTICLE PUMP TYPE
TNP2006000426A TNSN06426A1 (en) 2004-06-22 2006-12-21 Absorbent article comprising an elastic laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2004/001004 WO2005122984A1 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate

Publications (1)

Publication Number Publication Date
WO2005122984A1 true WO2005122984A1 (en) 2005-12-29

Family

ID=35509415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2004/001004 WO2005122984A1 (en) 2004-06-22 2004-06-22 Absorbent article comprising an elastic laminate

Country Status (12)

Country Link
US (1) US8052665B2 (en)
EP (1) EP1758534B1 (en)
JP (1) JP4980898B2 (en)
CN (1) CN100553597C (en)
AR (1) AR048985A1 (en)
AU (1) AU2004320744B2 (en)
BR (1) BRPI0418920B8 (en)
CA (1) CA2569109A1 (en)
MX (1) MXPA06014147A (en)
TN (1) TNSN06426A1 (en)
TW (1) TW200608950A (en)
WO (1) WO2005122984A1 (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007008128A1 (en) * 2005-07-14 2007-01-18 Sca Hygiene Products Ab Absorbent article
US7244387B2 (en) 2004-02-02 2007-07-17 Sca Hygiene Products Ab Apparatus and method for manufacturing an absorbent core
WO2007138373A1 (en) 2006-05-26 2007-12-06 Sca Hygiene Products Ab Hygiene pants for single use
JP2008043674A (en) * 2006-08-21 2008-02-28 Uni Charm Corp Pants-type diaper
EP2022453A1 (en) * 2006-05-25 2009-02-11 Kao Corporation Pants type disposable diaper
WO2010050854A1 (en) 2008-10-30 2010-05-06 Sca Hygiene Products Ab Disposable absorbent article comprising a printed tag
US7722591B2 (en) 2005-03-02 2010-05-25 Sca Hygiene Products Ab Hygiene pants for single use
US7806884B2 (en) 2004-06-22 2010-10-05 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US7888549B2 (en) 2004-11-30 2011-02-15 Sca Hygiene Products Ab Absorbent article
US8052665B2 (en) 2004-06-22 2011-11-08 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US8109916B2 (en) 2006-11-13 2012-02-07 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US8206365B2 (en) 2005-03-02 2012-06-26 Sca Hygiene Products Ab Pant-type absorbent article and a method for its manufacture
US8282616B2 (en) 2006-12-22 2012-10-09 Sca Hygiene Products Ab Pant-type absorbent article and a method for producing pant-type absorbent articles
US8298205B2 (en) 2006-11-13 2012-10-30 Sca Hygiene Products Ab Elastic laminate and absorbent article comprising the laminate
WO2013167170A1 (en) 2012-05-08 2013-11-14 Sca Hygiene Products Ab Absorbent article having a multi layered side seam, and corresponding manufacturing method
WO2013167179A1 (en) 2012-05-09 2013-11-14 Sca Hygiene Products Ab Outer cover assembly and disposable absorbent article
US8586820B2 (en) 2005-09-13 2013-11-19 Sca Hygiene Products Ab Absorbent article with colour changing properties
US8652113B2 (en) 2008-10-30 2014-02-18 Sca Hygiene Products Ab Disposable absorbent article comprising a printed tag
US8940116B2 (en) 2009-12-30 2015-01-27 Kimberly-Clark Worldwide, Inc. Process for making disposable absorbent garments to reduce absorbent bunching
US9102132B2 (en) 2006-11-13 2015-08-11 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate material
US9271880B2 (en) 2004-10-04 2016-03-01 Sca Hygiene Products Ab Absorbent article comprising an elastic web material
US9475264B2 (en) 2005-03-02 2016-10-25 Sca Hygiene Products Ab Underwear article comprising an elastic laminate
EP2105115B1 (en) 2006-12-28 2018-03-07 Daio Paper Corporation Disposable diaper

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007094706A1 (en) * 2006-02-13 2007-08-23 Sca Hygiene Products Ab Method of reinforcing a bond between web materials and an absorbent article comprising bonded web materials
EP2004121B1 (en) * 2006-04-05 2012-06-20 SCA Hygiene Products AB Absorbent article with leak barriers
JP5185765B2 (en) * 2008-10-14 2013-04-17 株式会社リブドゥコーポレーション Disposable pants-type diapers
US20100125264A1 (en) * 2008-11-17 2010-05-20 Naylor Leatrice A Disposable Undergarment with Sanitary Napkin
US10993849B2 (en) 2010-09-16 2021-05-04 Dsg Technology Holdings Ltd. Article with chassis having an elastic distribution, absorbent core and system and method for making same
SG10201507694SA (en) 2010-09-16 2015-10-29 Dsg Technology Holdings Ltd Article with Elastic Distribution and System and Method for Making Same
USD667609S1 (en) * 2011-09-19 2012-09-25 Larisa Zorin Disposable panty
US9469091B2 (en) 2012-08-08 2016-10-18 3M Innovative Properties Company Method of making extensible web laminates
EP2891480A1 (en) 2014-01-06 2015-07-08 Ontex BVBA Extensible laminate
JP6311872B2 (en) * 2014-04-18 2018-04-18 日本製紙クレシア株式会社 Pants-type absorbent article
US10722407B2 (en) 2014-10-31 2020-07-28 Kimberly-Clark Worldwide, Inc. Absorbent article with partial laminate waist elastic member
US10857040B2 (en) 2014-12-11 2020-12-08 Attends Healthcare Products, Inc. Disposable absorbent garment having elastic sheet material and elastic strands
WO2016130049A1 (en) * 2015-02-09 2016-08-18 Sca Hygiene Products Ab Pant-type absorbent article
JP2016182168A (en) * 2015-03-25 2016-10-20 日本製紙クレシア株式会社 Underpants type absorbent article
WO2018156817A2 (en) * 2017-02-22 2018-08-30 Dsg Technology Holdings Ltd. Article with chassis having an elastic distribution, absorbent core and system and method for making same
US12048335B2 (en) 2022-07-29 2024-07-30 Knix Wear Inc. Lower body garments with an interior lining and related methods
US12097103B1 (en) 2023-06-01 2024-09-24 Knix Wear Inc. Garments with fluid retention assemblies and related methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1043235A (en) 1996-08-08 1998-02-17 Oji Paper Co Ltd Throw-away diaper
US5921973A (en) 1994-11-23 1999-07-13 Bba Nonwoven Simpsonville, Inc. Nonwoven fabric useful for preparing elastic composite fabrics
US6106925A (en) * 1994-10-07 2000-08-22 The Procter & Gamble Company Coversheet for an absorbent product
US6476289B1 (en) 1991-02-28 2002-11-05 The Procter & Gamble Company Garment having elastomeric laminate
US20030078558A1 (en) 1999-02-10 2003-04-24 Hamzeh Karami Disposable pant type absorbent article with improved fasteners and method of making same
WO2003047488A1 (en) * 2001-11-30 2003-06-12 Tredegar Film Products Corporation Absorbent article with double-sided soft and elastic components

Family Cites Families (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH421025A (en) 1965-05-20 1966-09-30 Parravicini Flora Underpants
IT1034836B (en) 1975-04-04 1979-10-10 Fameccanica Spa PROCEDURE MACHINE AND RELATED PRODUCTS OBTAINED IN THE HYGIENIC SECTOR
DE3438736A1 (en) 1984-10-23 1986-04-24 Hoechst Ag, 6230 Frankfurt COEXTRUDED MULTILAYER AND BIAXIAL STRETCHED, OPAQUE POLYOLEFIN FILM WITH IMPROVED MECHANICAL PROPERTIES, METHOD FOR THEIR PRODUCTION AND THEIR USE
US4663220A (en) 1985-07-30 1987-05-05 Kimberly-Clark Corporation Polyolefin-containing extrudable compositions and methods for their formation into elastomeric products including microfibers
FR2586558B1 (en) 1985-09-04 1990-06-01 Beghin Say Sa CHANGE BELT
US4739012A (en) 1986-02-21 1988-04-19 E. I. Du Pont De Nemours And Company Elastomer blends
US4777080A (en) 1986-10-15 1988-10-11 Kimberly-Clark Corporation Elastic abrasion resistant laminate
US4842596A (en) 1986-12-31 1989-06-27 Kimberly-Clark Corporation Method of making a breathable elastic fabric composite and personal article incorporating same
DK157429C (en) 1987-01-20 1990-06-05 Tytex As Panties for the fixation of lead products as well as the method of manufacture thereof
US4909802A (en) 1987-04-16 1990-03-20 The Procter & Gamble Company Absorbent garment having a waist belt attachment system
US4936839A (en) 1987-08-27 1990-06-26 Mcneil-Ppc, Inc. Winged napkin having cross-channeling
EP0360929A1 (en) 1988-09-02 1990-04-04 VERATEC, INC. (a Delaware corp.) Fibre-film substrate
US5514470A (en) 1988-09-23 1996-05-07 Kimberly-Clark Corporation Composite elastic necked-bonded material
US4965122A (en) * 1988-09-23 1990-10-23 Kimberly-Clark Corporation Reversibly necked material
US5226992A (en) * 1988-09-23 1993-07-13 Kimberly-Clark Corporation Process for forming a composite elastic necked-bonded material
CA2019880C (en) 1989-07-18 1994-09-20 William Patrick Gipson Detachable two piece absorbent garment
EP0418493A1 (en) 1989-07-28 1991-03-27 Fiberweb North America, Inc. A nonwoven composite fabric combined by hydroentangling and a method of manufacturing the same
US5114781A (en) 1989-12-15 1992-05-19 Kimberly-Clark Corporation Multi-direction stretch composite elastic material including a reversibly necked material
US5462541A (en) 1990-11-13 1995-10-31 Kimberly-Clark Corporation Pocket-like diaper or absorbent article
US5176672A (en) 1990-11-13 1993-01-05 Kimberly-Clark Corporation Pocket-like diaper or absorbent article
US5156793A (en) 1991-02-28 1992-10-20 The Procter & Gamble Company Method for incrementally stretching zero strain stretch laminate web in a non-uniform manner to impart a varying degree of elasticity thereto
US5167897A (en) 1991-02-28 1992-12-01 The Procter & Gamble Company Method for incrementally stretching a zero strain stretch laminate web to impart elasticity thereto
US5143679A (en) 1991-02-28 1992-09-01 The Procter & Gamble Company Method for sequentially stretching zero strain stretch laminate web to impart elasticity thereto without rupturing the web
JP2832099B2 (en) 1991-07-10 1998-12-02 ユニ・チャーム株式会社 Disposable pants and method of manufacturing the same
US5261899A (en) 1992-04-06 1993-11-16 The Procter & Gamble Company Multilayer film exhibiting an opaque appearance
CA2097630A1 (en) 1992-12-29 1994-06-30 Ann Louise Mccormack Stretch-pillowed, bulked laminate
KR970009710B1 (en) 1992-12-30 1997-06-17 킴벌리-클라크 코포레이션 Garment attachment system
JP3205643B2 (en) 1993-05-19 2001-09-04 ユニ・チャーム株式会社 How to fuse pants-type disposable diapers
US5746730A (en) 1993-06-03 1998-05-05 Paragon Trade Brands, Inc. Absorbent article and method of manufacturing article
US5422172A (en) 1993-08-11 1995-06-06 Clopay Plastic Products Company, Inc. Elastic laminated sheet of an incrementally stretched nonwoven fibrous web and elastomeric film and method
FR2709415B1 (en) 1993-08-31 1996-03-29 Kimberly Clark Co Disposable period panties.
FR2713475B1 (en) 1993-12-13 1996-03-01 Peaudouce Disposable absorbent hygiene article with surface veil provided with an opening to receive the stool.
MX9602853A (en) 1994-01-18 1997-06-28 Paragon Trade Brands Inc Stretch-activated elastic composite.
JP3100300B2 (en) 1994-01-18 2000-10-16 株式会社日本吸収体技術研究所 Composite elastic body having multi-stage elongation characteristics and method for producing the same
US5635290A (en) 1994-07-18 1997-06-03 Kimberly-Clark Corporation Knit like nonwoven fabric composite
US5569234A (en) 1995-04-03 1996-10-29 The Procter & Gamble Company Disposable pull-on pant
US5667609A (en) 1996-02-14 1997-09-16 The Procter & Gamble Company Method for attaching barrier cuffs to disposable absorbent article
JP3672375B2 (en) 1996-04-24 2005-07-20 花王株式会社 Moisture permeable composite sheet and absorbent article using the same
US6677258B2 (en) 1996-05-29 2004-01-13 E. I. Du Pont De Nemours And Company Breathable composite sheet structure and absorbent articles utilizing same
US5706524A (en) 1996-08-16 1998-01-13 Herrin; Robert M. Disposable undergarment waistband and method of forming same
US5733628A (en) 1996-10-10 1998-03-31 Tredegar Industries, Inc. Breathable elastic polymeric film laminates
US6585713B1 (en) 1996-11-14 2003-07-01 Kimberly-Clark Worldwide, Inc. Absorbent article providing a dynamic fit
DE19703336C2 (en) 1997-01-30 1999-08-26 Tag Textilausruestungs Ges Sch Underwear system
JP3323100B2 (en) * 1997-04-30 2002-09-09 ユニ・チャーム株式会社 Disposable pants-type wearing article
US6072005A (en) 1997-10-31 2000-06-06 Kimberly-Clark Worldwide, Inc. Breathable films and process for producing them
SE514391C2 (en) 1997-12-03 2001-02-19 Sca Hygiene Prod Ab Absorbent articles
AU5712098A (en) 1997-12-19 1999-07-12 Procter & Gamble Company, The Disposable absorbent articles comprising microporous polymer films with registered graphics
JP2002520090A (en) 1998-07-10 2002-07-09 キンバリー クラーク ワールドワイド インコーポレイテッド Disposable pants with asymmetric absorbent core
RU2221531C2 (en) 1998-07-10 2004-01-20 Кимберли-Кларк Ворлдвайд, Инк. Disposable pants comprising displaceable absorbing inner member
SE518933C2 (en) 1998-11-06 2002-12-10 Sca Hygiene Prod Ab Absorbent articles with belt
WO2000045764A1 (en) 1999-02-02 2000-08-10 The Procter & Gamble Company Disposable pull-on garment including spunbonded nonwoven of polypropylene/polyethylene copolymer
US7625829B1 (en) 1999-08-30 2009-12-01 Tredegar Film Products Corporation Tear resistant elastic laminate and method of forming
WO2001030563A1 (en) 1999-10-22 2001-05-03 The Procter & Gamble Company Elastic laminate employing nonwoven formed by bi-component fibers of ethylene-propylene random copolymer
WO2001045927A1 (en) 1999-12-22 2001-06-28 The Procter & Gamble Company Elastic laminate including elastomeric scrim and fibrous layer bonded thereto and method for making the same
TW583085B (en) 2000-01-24 2004-04-11 Tredegar Film Prod Corp Stiffened lane elastic laminate
US6552245B1 (en) 2000-05-03 2003-04-22 Kimberly-Clark Worldwide, Inc. Absorbent article having an extensible outer cover and an extensible bodyside liner
US6833179B2 (en) 2000-05-15 2004-12-21 Kimberly-Clark Worldwide, Inc. Targeted elastic laminate having zones of different basis weights
FR2810879B1 (en) 2000-06-28 2003-09-26 Proteco LAYER COMPRISING AN ABSORBENT CORE HAVING A GENERAL OMEGA SHAPE
JP2002058703A (en) 2000-08-17 2002-02-26 Kea Le-To Service Kk Diaper cover and its manufacturing method
US6627564B1 (en) 2000-08-31 2003-09-30 Kimberly-Clark Worldwide, Inc. Composite elastic in one direction and extensible in another direction
JP4073613B2 (en) 2000-09-01 2008-04-09 ユニ・チャーム株式会社 Absorbent article using back sheet having continuous filament
US6869424B1 (en) 2000-10-27 2005-03-22 Kimberly-Clark Worldwide, Inc. Stretchable absorbent garment with non-stretchable liner
US6914018B1 (en) 2000-10-27 2005-07-05 Kimberly-Clark Worldwide, Inc. Biaxial stretch, breathable laminate with cloth-like aesthetics and method for making same
US7608069B2 (en) 2000-10-27 2009-10-27 Kimberly-Clark Worldwide, Inc. Absorbent article with captured leg elastics
JP3497815B2 (en) 2000-12-08 2004-02-16 大王製紙株式会社 Disposable paper diapers
SE517870C2 (en) 2000-12-20 2002-07-30 Sca Hygiene Prod Ab Absorbent articles including leakage barriers
KR100872474B1 (en) 2001-03-15 2008-12-05 다이오세이시가부시끼가이샤 Paper diaper and method for manufacturing extensible sheet used in the diaper
JP3561477B2 (en) 2001-03-16 2004-09-02 大王製紙株式会社 Method for manufacturing elastic sheet
US20030003831A1 (en) 2001-06-29 2003-01-02 Childs Stephen Lee Cleaning sheets comprising multi-denier fibers
AUPR722101A0 (en) 2001-08-24 2001-09-13 Skyllas-Kazacos, Maria Vanadium chloride/polyhalide redox flow battery
JP4392173B2 (en) 2002-01-30 2009-12-24 ユニ・チャーム株式会社 Pants-type disposable wearing articles
JP2004050621A (en) 2002-07-19 2004-02-19 Chisso Corp Composite film and absorptive article using the same
EP1384459B1 (en) 2002-07-23 2007-03-28 Kao Corporation Disposable diaper
JP3810721B2 (en) * 2002-09-05 2006-08-16 花王株式会社 Method for producing stretchable composite sheet
US8043273B2 (en) 2002-12-19 2011-10-25 Kimberly-Clark Worldwide, Inc. Disposable undergarment with a stretchable absorbent insert and method for the use thereof
US7749211B2 (en) 2002-10-18 2010-07-06 Kimberly-Clark Worldwide, Inc. Body conforming absorbent garment and methods for the use and manufacture thereof
US6984279B2 (en) 2002-11-25 2006-01-10 Kimberly-Clark Worldwide, Inc. Process to make boxer shorts with an absorbent core
US20040116887A1 (en) * 2002-12-12 2004-06-17 Thorson Russell E. Disposable undergarment with a gathered crotch member and method for the manufacture thereof
US7198621B2 (en) * 2002-12-19 2007-04-03 Kimberly-Clark Worldwide, Inc. Attachment assembly for absorbent article
US7736350B2 (en) 2002-12-30 2010-06-15 Kimberly-Clark Worldwide, Inc. Absorbent article with improved containment flaps
US20040127878A1 (en) 2002-12-30 2004-07-01 Olson Christopher Peter Surround stretch absorbent garments
SE0300592D0 (en) 2003-03-07 2003-03-07 Sca Hygiene Prod Ab Method of applying elastic members to a trouser-absorbent article
US6916750B2 (en) 2003-03-24 2005-07-12 Kimberly-Clark Worldwide, Inc. High performance elastic laminates made from high molecular weight styrenic tetrablock copolymer
US20040241389A1 (en) 2003-03-26 2004-12-02 Chung Tze Wan Pansy Stretchable web
US6964720B2 (en) 2003-03-26 2005-11-15 The Procter & Gamble Company Elastomeric nonwoven laminates and process for producing same
US7018369B2 (en) * 2003-05-30 2006-03-28 Kimberly-Clark Worldwide, Inc. Disposable pant-like undergarment having an elastic band adjacent the waist opening
EP1656477A4 (en) 2003-08-22 2008-05-07 Advanced Design Concepts Gmbh Fully elastic nonwoven-film composite
US7507680B2 (en) 2003-11-12 2009-03-24 Tredegar Film Products Corporation Composite elastic web
US20050215155A1 (en) 2004-03-23 2005-09-29 The Procter & Gamble Company Absorbent article with improved opacity
CA2569305A1 (en) 2004-06-22 2005-12-29 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
AU2004320744B2 (en) 2004-06-22 2010-09-30 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
CN101035494A (en) 2004-10-04 2007-09-12 Sca卫生产品股份公司 Absorbent article comprising an elastic textile material
US20060148358A1 (en) 2004-12-30 2006-07-06 Hall Gregory K Elastic laminate and process therefor
CA2598504A1 (en) 2005-03-02 2006-09-08 Sca Hygiene Products Ab Underwear article comprising an elastic laminate
JP5026288B2 (en) 2005-03-02 2012-09-12 エスセーアー・ハイジーン・プロダクツ・アーベー Pants-type absorbent article and manufacturing method thereof
EP1853211B1 (en) 2005-03-02 2012-06-27 SCA Hygiene Products AB Hygiene pants for single use
WO2006093439A1 (en) 2005-03-02 2006-09-08 Sca Hygiene Products Ab A pant-type absorbent article
EP1959903B1 (en) 2005-12-15 2014-02-12 SCA Hygiene Products AB Absorbent article
EP2004121B1 (en) 2006-04-05 2012-06-20 SCA Hygiene Products AB Absorbent article with leak barriers
CN101534777B (en) 2006-11-13 2013-03-20 Sca卫生用品公司 Absorbent article comprising an elastic laminate materials

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6476289B1 (en) 1991-02-28 2002-11-05 The Procter & Gamble Company Garment having elastomeric laminate
US6106925A (en) * 1994-10-07 2000-08-22 The Procter & Gamble Company Coversheet for an absorbent product
US5921973A (en) 1994-11-23 1999-07-13 Bba Nonwoven Simpsonville, Inc. Nonwoven fabric useful for preparing elastic composite fabrics
JPH1043235A (en) 1996-08-08 1998-02-17 Oji Paper Co Ltd Throw-away diaper
US20030078558A1 (en) 1999-02-10 2003-04-24 Hamzeh Karami Disposable pant type absorbent article with improved fasteners and method of making same
WO2003047488A1 (en) * 2001-11-30 2003-06-12 Tredegar Film Products Corporation Absorbent article with double-sided soft and elastic components

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7244387B2 (en) 2004-02-02 2007-07-17 Sca Hygiene Products Ab Apparatus and method for manufacturing an absorbent core
US8052665B2 (en) 2004-06-22 2011-11-08 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US7806884B2 (en) 2004-06-22 2010-10-05 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US9271880B2 (en) 2004-10-04 2016-03-01 Sca Hygiene Products Ab Absorbent article comprising an elastic web material
US7888549B2 (en) 2004-11-30 2011-02-15 Sca Hygiene Products Ab Absorbent article
US8206365B2 (en) 2005-03-02 2012-06-26 Sca Hygiene Products Ab Pant-type absorbent article and a method for its manufacture
US8029631B2 (en) 2005-03-02 2011-10-04 Sca Hygiene Products Ab Hygiene pants for single use
US7722591B2 (en) 2005-03-02 2010-05-25 Sca Hygiene Products Ab Hygiene pants for single use
US9475264B2 (en) 2005-03-02 2016-10-25 Sca Hygiene Products Ab Underwear article comprising an elastic laminate
US7959619B2 (en) 2005-03-02 2011-06-14 Sca Hygiene Products Ab Hygiene pants for single use
US8641695B2 (en) 2005-07-14 2014-02-04 Sca Hygiene Products Ab Absorbent article
WO2007008128A1 (en) * 2005-07-14 2007-01-18 Sca Hygiene Products Ab Absorbent article
CN101222894B (en) * 2005-07-14 2011-03-02 Sca卫生产品股份公司 Absorbent product
US8586820B2 (en) 2005-09-13 2013-11-19 Sca Hygiene Products Ab Absorbent article with colour changing properties
EP2022453A4 (en) * 2006-05-25 2010-03-31 Kao Corp Pants type disposable diaper
EP2022453A1 (en) * 2006-05-25 2009-02-11 Kao Corporation Pants type disposable diaper
EP2100575A2 (en) 2006-05-26 2009-09-16 SCA Hygiene Products AB Hygiene pants for single use
WO2007138373A1 (en) 2006-05-26 2007-12-06 Sca Hygiene Products Ab Hygiene pants for single use
JP2008043674A (en) * 2006-08-21 2008-02-28 Uni Charm Corp Pants-type diaper
US8298205B2 (en) 2006-11-13 2012-10-30 Sca Hygiene Products Ab Elastic laminate and absorbent article comprising the laminate
US9102132B2 (en) 2006-11-13 2015-08-11 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate material
US8109916B2 (en) 2006-11-13 2012-02-07 Sca Hygiene Products Ab Absorbent article comprising an elastic laminate
US8282616B2 (en) 2006-12-22 2012-10-09 Sca Hygiene Products Ab Pant-type absorbent article and a method for producing pant-type absorbent articles
EP2105115B1 (en) 2006-12-28 2018-03-07 Daio Paper Corporation Disposable diaper
WO2010050854A1 (en) 2008-10-30 2010-05-06 Sca Hygiene Products Ab Disposable absorbent article comprising a printed tag
US8652113B2 (en) 2008-10-30 2014-02-18 Sca Hygiene Products Ab Disposable absorbent article comprising a printed tag
US9060902B2 (en) 2008-10-30 2015-06-23 Sca Hygiene Products Ab Disposable absorbent article comprising a printed tag
US8940116B2 (en) 2009-12-30 2015-01-27 Kimberly-Clark Worldwide, Inc. Process for making disposable absorbent garments to reduce absorbent bunching
WO2013167170A1 (en) 2012-05-08 2013-11-14 Sca Hygiene Products Ab Absorbent article having a multi layered side seam, and corresponding manufacturing method
US10085898B2 (en) 2012-05-08 2018-10-02 Sca Hygiene Products Ab Absorbent article having a multi layered side seam, and corresponding manufacturing method
WO2013167179A1 (en) 2012-05-09 2013-11-14 Sca Hygiene Products Ab Outer cover assembly and disposable absorbent article

Also Published As

Publication number Publication date
TNSN06426A1 (en) 2008-02-22
BRPI0418920A (en) 2007-11-27
TW200608950A (en) 2006-03-16
CA2569109A1 (en) 2005-12-29
JP4980898B2 (en) 2012-07-18
CN100553597C (en) 2009-10-28
US20080033387A1 (en) 2008-02-07
BRPI0418920B1 (en) 2015-12-22
CN1976656A (en) 2007-06-06
EP1758534B1 (en) 2016-12-28
AU2004320744B2 (en) 2010-09-30
AR048985A1 (en) 2006-06-14
MXPA06014147A (en) 2007-03-07
EP1758534A1 (en) 2007-03-07
AU2004320744A1 (en) 2005-12-29
JP2008503314A (en) 2008-02-07
BRPI0418920B8 (en) 2021-06-22
US8052665B2 (en) 2011-11-08

Similar Documents

Publication Publication Date Title
AU2004320744B2 (en) Absorbent article comprising an elastic laminate
AU2004320745B2 (en) Absorbent article comprising an elastic laminate
AU2004323904B2 (en) Absorbent article comprising an elastic web material
US9102132B2 (en) Absorbent article comprising an elastic laminate material
AU2014410322B2 (en) A pant-type absorbent article comprising an elastic laminate
RU2345746C2 (en) Absorbing product containing elastic laminate
RU2345747C2 (en) Absorbing product containing elastic laminate
KR20070024622A (en) Absorbent article comprising an elastic laminate
KR20070024665A (en) Absorbent article comprising an elastic laminate

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200480043410.9

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

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

Ref document number: 2004749042

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2004749042

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 551423

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 12006502396

Country of ref document: PH

WWE Wipo information: entry into national phase

Ref document number: 2569109

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: PA/a/2006/014147

Country of ref document: MX

Ref document number: 7321/DELNP/2006

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2007517993

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 2004320744

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 1020067026884

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 11630372

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Ref document number: DE

ENP Entry into the national phase

Ref document number: 2004320744

Country of ref document: AU

Date of ref document: 20040622

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 2004320744

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2007102072

Country of ref document: RU

Ref document number: 07005754

Country of ref document: CO

WWP Wipo information: published in national office

Ref document number: 1020067026884

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 2004749042

Country of ref document: EP

ENP Entry into the national phase

Ref document number: PI0418920

Country of ref document: BR

WWP Wipo information: published in national office

Ref document number: 11630372

Country of ref document: US