Patents by Inventor Urban Widlund
Urban Widlund has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5919178Abstract: A method for producing an absorbent structure intended for use in an absorbent article, such as a sanitary napkin, incontinence guard, diaper, wherein the absorbent structure is produced by laying a layer of essentially superabsorbent material between two layers of defibered and moisturized cellulose pulp or tissue, whereafter the composite structure is calendared between one or more pairs of heated rolls, wherewith the layer of superabsorbent material binds in itself and forms a stable layer, which binds to the surrounding cellulose pulp layers or tissue layers. The absorbent structure exhibits excellent absorption properties and can be made very thin. The structure can be manufactured without superabsorbent material being spread around the manufacturing machine during the production process, or escaping from the finished absorbent article when packaging, transporting or using the article.Type: GrantFiled: October 2, 1996Date of Patent: July 6, 1999Assignee: SCA Molnlycke ABInventor: Urban Widlund
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Patent number: 5901419Abstract: A fastener for absorbent articles, such as pants-type diapers or incontinence guards, includes a first fastener element and a second fastener element (1, 4) which are intended to be hooked together when donning the article. The first element (1) includes an elastic structure (2) which includes openings (6) and is so constructed that the openings (6) will widen when the elastic structure (2) is stretched and closed together when the elastic structure contracts. The second element (4) includes hook devices (5). When the elastic structure (2) is sufficiently stretched, the hook devices (5) can be inserted into the widened openings (6), wherein subsequent contraction of the elastic structure (2) will cause the first and the second elements (1, 4) to be joined together with the opening (6) surrounding the hook device (5).Type: GrantFiled: January 5, 1998Date of Patent: May 11, 1999Assignee: SCA Hygiene Products ABInventors: Urban Widlund, Anna Karin Jonbrink
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Patent number: 5855574Abstract: A method of manufacturing an absorbent article, and an absorbent article, in the form of a pants-type diaper or a sanitary panty, starting from a flat blank which includes an elongated absorbent body enclosed between two casing sheets which at opposing front and rear end parts of the absorbent body have side parts which extend laterally beyond the body on both sides thereof. The method includes the step of folding the blank around a transverse axis so that the end edges of the side parts lie edge-to-edge. At least one folded band of flexible material is placed between each pair of front and rear side parts which lie opposite one another in the folded state of the blank, and the free ends of the bands are fastened to adjacent side parts.Type: GrantFiled: October 4, 1996Date of Patent: January 5, 1999Assignee: SCA Hygiene Products AktiebolagInventors: Robert Kling, Urban Widlund, Gunilla Hedlund
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Patent number: 5855571Abstract: An absorbent structure in an absorbent article, such as a diaper, incontinence guard, sanitary napkin and the like, wherein the structure includes hydrophilic fibres and particles of a superabsorbent material and also has a front and a back part (4, 5) and a crotch part (6) located therebetween, said crotch part exhibiting a wetting region (16) within which the major part of discharged fluid is directed and wherein the absorbent structure in the wetting region includes superabsorbent particles that are encased in a material that will only dissolve slowly in and/or be penetrated slowly by the fluid to be absorbed so that the superabsorbent material will not begin to absorb fluid and swell to any appreciable extent until the encapsulating material has dissolved and/or been penetrated by the fluid and that conventional superabsorbent material (15) is localized generally in those parts of the structure that are located outside said wetting region.Type: GrantFiled: December 5, 1995Date of Patent: January 5, 1999Assignee: Molnlycke ABInventors: Christina Steger, Edward Guidotti, Eje Osterdahl, Urban Widlund
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Patent number: 5817085Abstract: A method for the manufacturing of an absorbent structure in an absorbent article, such as a sanitary napkin, tampon, panty protector, wound or sore dressing and like articles is produced by using absorbent material in roll form directly in the product without first defibrating the material and then forming a mat. The material possesses good dispersion properties and swelling properties, which are meaningful to the function of the product. A high surface dryness is obtained, among other things. In addition to cellulose fibers, the absorbent structure may also include superabsorbent material and/or binding fibers, among other ingredients. The pulp mat is very thin, therewith obviating the need to compress the mat further in the product. In the case of certain product applications, the material is softened mechanically prior to its use as an absorbent material.Type: GrantFiled: May 16, 1995Date of Patent: October 6, 1998Assignee: SCA Molnlycke ABInventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
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Patent number: 5814034Abstract: A method for the manufacturing of an absorbent structure in an absorbent article, such as a sanitary napkin, tampon, panty protector, wound or sore dressing and like articles is produced by using absorbent material in roll form directly in the product without first defibrating the material and then forming a mat. The material possesses good dispersion properties and swelling properties, which are meaningful to the function of the product. A high surface dryness is obtained, among other things. In addition to cellulose fibers, the absorbent structure may also include superabsorbent material and/or binding fibers, among other ingredients. The pulp mat is very thin, therewith obviating the need to compress the mat further in the product. In the case of certain product applications, the material is softened mechanically prior to its use as an absorbent material.Type: GrantFiled: August 2, 1995Date of Patent: September 29, 1998Assignee: Molnlycke ABInventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
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Patent number: 5797895Abstract: Elastic tapes consisting of non-weldable elastic warp threads and weldable thermoplastic weft threads, are fixed to one side of a cover layer of a disposable diaper by ultrasonic welding of the thermoplastic weft threadsType: GrantFiled: June 18, 1996Date of Patent: August 25, 1998Assignee: Molnlycke ABInventors: Urban Widlund, Robert Kling
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Patent number: 5792130Abstract: A diaper having a front part (12), a back part (14) and an intermediate crotch part (13) which includes an absorbent body unit (1) which is joined to a fluid-impermeable bottom sheet (7) and to a fluid-permeable top sheet (9) which lies proximal to the wearer's body in use and which includes an opening (15) situated in the back part and crotch part of the diaper and stretch-mounted elastic devices (20, 21), and which is not attached to the absorbent body unit at least within the region of the opening (15). The absorbent body unit (1) includes a main body (2) which is provided with a leg recess on respective sides thereof, and two side-bodies (3, 4) which are placed laterally outside the main body on respective sides thereof and in respective leg recesses.Type: GrantFiled: June 5, 1996Date of Patent: August 11, 1998Assignee: Molnlycke ABInventors: Urban Widlund, Anna Svernlov
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Patent number: 5779690Abstract: A diaper having a front part (12), a back part (14) and an intermediate crotch part (13) which includes an absorbent body (1) joined to a fluid-impermeable bottom sheet (7) and a fluid-permeable top sheet (9) which lies proximal to the wearer's body in use and which includes an opening (15) situated in the back and crotch part of the diaper and elastic devices (20, 21) and which is unattached to the absorbent body at least within the region of the opening (15). Two elastic devices (20, 21) in the top sheet (9) extend divergently in relation to one another, from the front edge (16) of the opening (15) in the crotch part (13) towards the back part (14) and on respective sides of the opening in the top sheet (9).Type: GrantFiled: July 29, 1996Date of Patent: July 14, 1998Assignee: Molnlycke ABInventors: Anders Gustafsson, Anna Svernlov, Urban Widlund, Benedicte Durant
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Patent number: 5746732Abstract: An absorbent article for one-time use only, such as a disposable diaper, incontinence guard, sanitary napkin, panty protector or the like, includes at least one hose-like fold (20, 20', 21, 21') which extends in the transverse and/or longitudinal direction of the article. Mounted in the fold (20, 20', 21, 21') are mutually spaced elastic elements (32, 32', 33, 33') which are fastened to respective end parts (27, 27', 28, 28') of the fold on respective sides of fold lines (24, 25) which depart from the upper casing layer (1) of the article, although these elastic elements (32, 32', 33, 33') are freely moveable in the intermediate part (29, 29') of the fold.Type: GrantFiled: October 29, 1996Date of Patent: May 5, 1998Assignee: Molnlycke ABInventors: Stefan Olsson, Urban Widlund, Anders Soderbergh
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Patent number: 5730737Abstract: A method for manufacturing of an absorbent structure in an absorbent article, such as a sanitary napkin, tampon, panty protector, incontinence guard, diaper, bed protector, wound or sore dressing, saliva absorbent and like articles is comprising the use of absorbent material in roll form directly in the product without first defibrating the material and then forming a mat. The material possesses good aquisition properties, which are meaningful to the function of the product. A high surface dryness is obtained, among other things. In addition to cellulose fibers, the absorbent structure may also include superabsorbent material and/or binding fibers, among other ingredients. The pulp mat is very thin, therewith obviating the need to compress the mat further in the product. In the case of certain product applications, the material is softened mechanically prior to its use as an absorbent material.Type: GrantFiled: May 16, 1995Date of Patent: March 24, 1998Assignee: Molnlycke ABInventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
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Patent number: 5728085Abstract: A method for manufacturing an absorbent structure in an absorbent article, such as a sanitary napkin, tampon, panty protector, incontinence guard, diaper, bed protector, wound or sore dressing, saliva absorbent and like articles is produced by using absorbent material in roll form directly in the product without first defibrating the material and then forming a mat. The material possesses good wicking properties and swelling properties, which are meaningful to the function of the product. A high surface dryness is obtained, among other things. In addition to cellulose fibres, the absorbent structure may also include superabsorbent material and/or binding fibres, among other ingredients, The pulp mat is very thin, therewith obviating the need to compress the mat further in the product. In the case of certain product applications, the material is softened mechanically prior to its use as an absorbent material.Type: GrantFiled: May 16, 1995Date of Patent: March 17, 1998Assignee: Molnlycke ABInventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
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Patent number: 5702378Abstract: A disposable, absorbent article such as a diaper or an incontinence guard includes an absorbent pad disposed between inner and outer casing layers. At least one of the inner and outer casing layers is made of an elastic material having areas from which material has been removed while leaving coherent material parts in order to impart different elastic properties to different parts of the material. The material removed can be in the form of through holes or blind holes.Type: GrantFiled: May 24, 1995Date of Patent: December 30, 1997Assignee: Molnlycke ABInventors: Urban Widlund, Roy Hansson
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Patent number: 5690625Abstract: The present invention relates to an absorbent disposable article, such as a sanitary napkin, a panty protector, or a diaper. The article includes at least two generally flat, flexible bodies which include absorbent material and which, in a packaging state, can lie against one another with first flat sides which are intended to face toward the wearer when the article is in use. Two neighboring bodies of the article are mutually joined along a first common edge which forms a folding line around which the bodies can be folded out from their packaging state and which includes an arcuate section which, in the packaging state of the article, is arched toward a second opposing edge of the bodies.Type: GrantFiled: December 16, 1996Date of Patent: November 25, 1997Assignee: Molnlycke ABInventor: Urban Widlund
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Patent number: 5486273Abstract: A method for imparting varying degrees of elasticity in different areas of a resilient material for disposable absorbent articles includes providing an elastic material and removing material from areas of the elastic material which are to be given a lesser degree of resilience than remaining areas. At the same time attached material parts are left in those areas of the elastic material from which material has been removed.Type: GrantFiled: December 27, 1991Date of Patent: January 23, 1996Assignee: Molnlycke ABInventors: Urban Widlund, Roy Hansson
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Patent number: 5454804Abstract: The invention relates to an absorbent article, such as a sanitary napkin or an incontinence guard intended to be worn in the crotch part of a pair of underpants (9), and comprising an elongated absorbent pad (3) which is enclosed in a casing (1, 2) and which has attached to both long side edges (6, 7) flexible flaps (4, 5) which are intended to be folded around the leg edges (10, 11) of the underpants (9) in use, so as to prevent soiling of the underpants. An inventive article is mainly characterized in that each flap (4, 5) has an edge part which coincides generally with a corresponding edge part on the article casing (1, 2), and in that the flaps (4, 5) and the casing (1, 2) are mutually joined within the mutually coincidental edge parts (12, 13), with the flaps (4, 5) extending inwardly over the absorbent pad (3).Type: GrantFiled: April 23, 1993Date of Patent: October 3, 1995Assignee: Molnlycke ABInventor: Urban Widlund
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Patent number: 5391162Abstract: An absorbent article such as a sanitary napkin or a guard for mildly incontinent persons, comprising an elongated absorbent pad (3) enclosed between a liquid-permeable casing sheet (1) facing the wearer in use of the article and a liquid-impermeable casing sheet (2). At least one of the casing sheets extends laterally beyond the absorbent pad forming an outwardly projecting, longitudinally extending edge. Flexible side-flaps (5, 6) are arranged at the long side edges of the absorbent pad (3) and are intended, when the article is used, to be folded around the edges of the wearer's underpants or like garment (9) in the crotch part thereof and attached to the outside of the underpants. Uplifted liquid barrier devices (10, 11) are provided on that side of the article which faces the wearer in use on both sides of the absorbent pad (3) along at least parts of the long side edges thereof between the absorbent pad and the flexible side-flaps.Type: GrantFiled: May 3, 1993Date of Patent: February 21, 1995Assignee: Molnlycke ABInventors: Urban Widlund, Helena Engqvist, Agneta Thoren
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Patent number: 5382467Abstract: The present invention relates to a resilient body which includes two thin layers (1, 6) of flexible material to which intermediate elastic threads (2, 3, 5) or bands are fastened in a stretched state and disposed in a regular, net-like pattern, and bodies (4) of soft material are disposed between the two layers (1, 6) in at least some of the meshes of the net formed by the elastic threads. These bodies have smaller dimensions than the meshes, so as to permit total or partial contraction of the stretched or tensioned elastic threads. The bodies also have an intrinsic stiffness such as to substantially retain their shape upon contraction of the elastic threads. The invention also relates to a method for manufacturing the inventive resilient body.Type: GrantFiled: June 22, 1992Date of Patent: January 17, 1995Assignee: Molnlycke ABInventors: Urban Widlund, Roy Hansson
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Patent number: 4998929Abstract: Disposable diapers comprising an absorbent body (1) which is surrounded by a casing consisting of a liquid permeable outer layer (3) facing the wearer during use of the diaper, and a liquid impermeable outer layer disposed on the opposite side of the absorbent body. The distinguishing feature of the invention is that an elastic waist means in the form of a comparatively wide elastic strip (9) extending in the transverse direction of the diaper is applied in a prestretched state at least at one end portion of the diaper, said strip being connected via an edge portion with the liquid impermeable outer layer while being arranged to constitute, together with said outer layer, a liquid absorbing pocket sealing around the end portion of the absorbent body.Type: GrantFiled: December 6, 1989Date of Patent: March 12, 1991Assignee: Molnlycke ABInventors: Margareta Bjorksund, Urban Widlund
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Patent number: 4880421Abstract: The present invention relates to a disposable absorbent article (1) such as a diaper or an incontinence protector intended during use to seal like a pant around the user's abdomen and comprising an absorption body (4) applied between a liquid impermeable outer layer (2) facing away from the user and a liquid permeable inner layer (3) facing the user, these two layers being interconnected at least along the long sides of the article. The inventive article is primarily distinguished in that a strip (13,14) of a liquid impermeable material, extending in the transverse direction of the article, is disposed at least at one end portion of the article, this strip having a portion (16,17) positioned between the absorption body (4) and the liquid permeable inner layer (3) and a portion (18,19) folded over the end edge (10,15) of the absorption body while being secured to the liquid impermeable outer layer (2), the article thereby obtaining a liquid-tight reinforced edge portion (22,23).Type: GrantFiled: November 23, 1987Date of Patent: November 14, 1989Assignee: Molnlycke ABInventor: Urban Widlund