Patents Assigned to Molnlycke AB
  • Patent number: 5778890
    Abstract: The present invention relates to a surgical drape having an adhesive edge or border and including a liquid-impermeable layer and a layer of absorbent material fastened thereto. According to the present invention, at least one edge or border of the surgical drape has affixed thereto a separate edge-piece which includes an adhesive coating on that side which in use lies proximal to the patient's body.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: July 14, 1998
    Assignee: Molnlycke AB
    Inventors: Kristina Lofgren, Ewa Kolby Falck, Bengt Netsner
  • Patent number: 5762253
    Abstract: A belt conveyor which includes an endless perforated belt having a top run and a bottom run, of which the top run communicates with an underlying suction box at least over a part of its length. The belt is cogwheel-driven and, seen its movement direction, includes transverse ribs which coact with the cogs of a cogwheel and a cog drive of the conveyor.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: June 9, 1998
    Assignee: SCA Molnlycke AB
    Inventors: Kjell .ANG.berg, Roger Holt
  • Patent number: 5752946
    Abstract: A disposable liquid-absorbing article, such as a diaper (10), sanitary towel or similar, having a substantially longitudinal shape and including an absorption body (12) and a cover (11) enclosing the absorption body with a liquid-pervious inner sheet (17) and an outer sheet (18) and contracting elastics members (23) in contact with at least one of the sheets to give the article its shape in an in-use position. The cover sheet on which the elastics members are applied, is connected to the inside and outside of the absorption body respectively, and the elastics members (23) extend with at least one substantially continually curved portion (24, 25) over at least an area of the absorption body. The strive of the elastics members to contract and the contact of the elastics members with one of the sheets, exert a tension force on the sheet in a direction towards the curvature center of the elastics members, whereby this force is transferred and absorbed by the absorption body.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: May 19, 1998
    Assignee: SCA Molnlycke AB
    Inventors: Fredrik Boberg, Carina Hedlund
  • Patent number: 5749987
    Abstract: A method and device for controlling the power intake of a welding unit (1) with an ultrasonic horn (2) and an anvil holder (3) equipped with anvils (4). The mean distance of the ultrasonic horn (2) from the anvil (4) is controlled so that the power intake of the welding unit (1) will coincide with a predetermined control value.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: May 12, 1998
    Assignee: Molnlycke AB
    Inventor: Andreas Wannebo
  • Patent number: 5746732
    Abstract: 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: Grant
    Filed: October 29, 1996
    Date of Patent: May 5, 1998
    Assignee: Molnlycke AB
    Inventors: Stefan Olsson, Urban Widlund, Anders Soderbergh
  • Patent number: 5741241
    Abstract: An absorbent body intended to form the absorbent element of an absorbent article, such as a diaper, an incontinence guard or a sanitary napkin, includes a first fibre-based absorbent layer which lies proximal to the wearer in use, and a second, fibre-based absorbent layer which is intended to lie distal from the wearer in use, this second layer having a high liquid-dispersing ability. An absorbent body exhibiting particularly good absorption properties has been obtained by including in the first layer (16) a superabsorbent material (18) of high gel-strength and by mixing this superabsorbent essentially uniformly in the fibre material within at least one area of the layer, and by including between the fibre layers (17a, 17b) of the second layer (17) a layer (20) of superabsorbent material.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: April 21, 1998
    Assignee: SCA Molnlycke AB
    Inventors: Ted Guidotti, Eje Osterdahl
  • Patent number: 5735838
    Abstract: A disposable diaper in which elastic which provides elasticized leg cuffs is accommodated in a pocket of material formed by either a facing sheet or a backing sheet of the diaper. The pocket extends along each longitudinal edge portion of the diaper. Fastening member for fastening the diaper around a wearer are affixed to the diaper between the facing sheet and the backing sheet.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: April 7, 1998
    Assignee: Molnlycke AB
    Inventors: Peter Ronnberg, Lennart Nilsson
  • Patent number: 5730737
    Abstract: 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: Grant
    Filed: May 16, 1995
    Date of Patent: March 24, 1998
    Assignee: Molnlycke AB
    Inventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
  • Patent number: 5728082
    Abstract: The invention relates to an absorbent body for use in diapers or like articles. The invention is characterized in that the absorbent body includes a first layer of fluff, a first superabsorbent mixed in the fluff layer and having a high degree of cross-linking, and in that the absorbent body includes a second layer which contains a second superabsorbent having a higher liquid absorbency than the first superabsorbent.
    Type: Grant
    Filed: November 19, 1994
    Date of Patent: March 17, 1998
    Assignee: Molnlycke AB
    Inventors: Lars Gustafsson, Stefan Areskoug, Magnus Qvist
  • Patent number: 5728085
    Abstract: 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: Grant
    Filed: May 16, 1995
    Date of Patent: March 17, 1998
    Assignee: Molnlycke AB
    Inventors: Urban Widlund, Eje Osterdahl, Roy Hansson, Milan Kolar
  • Patent number: 5702378
    Abstract: 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: Grant
    Filed: May 24, 1995
    Date of Patent: December 30, 1997
    Assignee: Molnlycke AB
    Inventors: Urban Widlund, Roy Hansson
  • Patent number: 5690625
    Abstract: 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: Grant
    Filed: December 16, 1996
    Date of Patent: November 25, 1997
    Assignee: Molnlycke AB
    Inventor: Urban Widlund
  • Patent number: 5688257
    Abstract: A tampon (8) includes an absorbent body (2) which is embraced by a fluid-permeable casing (4) of thermoplastic non-woven material. A withdrawal string (7) attached to the absorbent body (2) exits centrally from one end surface (10) of the tampon. The casing material (4) is heat-sealed at least at the central part of the end surface (10), by pressing a mandrel (9) against the end (10) of the tampon, so as to coalesce the thermoplastic material to an essentially fluid-impervious film (11). This improves the protection of the tampon against leakage and also increases the stability of the tampon.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: November 18, 1997
    Assignee: Molnlycke AB
    Inventor: Clas Olsen
  • Patent number: 5674211
    Abstract: In a method of manufacturing material suitable for use as a top sheet in an absorbent disposable article, such as a sanitary napkin, an incontinence guard or a diaper, a laminate (1) comprised of a plastic film (2) and a layer of non-woven material (3) on at least one side of the plastic film is applied to a perforated supportive device (6) with one layer of non-woven material facing towards the supportive device. The plastic film is heated to a temperature above its softening temperature and there is generated between the two mutually opposing sides of the laminate a pressure difference of such magnitude that the plastic film will rupture within the regions of the holes in the supportive device so as to form openings (10) which lead to the associated non-woven material. A soft and smooth, liquid-permeable top sheet material is achieved.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: October 7, 1997
    Assignee: Molnlycke AB
    Inventor: Joakim Ekdahl
  • Patent number: 5674215
    Abstract: An absorbent article, particularly a diaper, has a central absorbent unit (1) which is comprised of an elongated absorbent body (2) enclosed between a liquid-permeable inner casing sheet (3) which lies proximal to the wearer in use, and a liquid-impermeable, outer casing sheet (4) which lies distal from the wearer in use. The absorbent unit is provided along its longitudinal edges (9) with liquid-impermeable folds (6) which are upstanding from the inner casing sheet and which form side-leakage barriers. The article has a side-flap (18) on each side of the absorbent unit (1). The side-flaps (18), optionally with associated edge (21, 23), are produced in the form of rectangular strips (10) completely separated from the absorbent unit (1) and are thereafter jointed thereto. A longitudinally extending edge-part (13) of each strip (10) is suitably folded double and the backwardly fold part (19) is joined to the outer casing sheet (3a, 4b or 4) of the absorbent unit (1)along a curved fastening line (21).
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: October 7, 1997
    Assignee: Molnlycke AB
    Inventor: Peter Ronnberg
  • Patent number: 5665191
    Abstract: The present invention relates to a method and to an arrangement for creating in a web (1) of sheet material a fold which includes at least one elastic thread (4). The web is placed on two mutually separated carrier elements (2, 3), and at least one prestretched elastic thread (4) is placed over the web in the space between the opposing edges of the carrier elements.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: September 9, 1997
    Assignee: SCA Molnlycke AB
    Inventors: Dan Johansson, Leidulf Indreb.o slashed.
  • Patent number: 5653702
    Abstract: An absorbent body in an absorbent article, such as a sanitary napkin, panty protector, incontinence guard, diaper or the like. The absorbent body includes a first layer, an admission layer (4), which comprises a mixture of 80-95% resilient fibres and 5-20% heat-actuable binding fibres, preferably bicomponent fibres, and a second layer, a storage and dispersion layer (5), which comprises a mixture of 45-90% absorbent fibres and 5-15% heat-actuable binding fibres, wherein the binding fibres are heat treated so as to bond together and to hold the fibre structures together in the first and second layers (4, 5), such that these layers will form a laminate that has a tensile strength of at least 2N/50 mm in a dry state. The absorbent body also has a high surface dryness and low rewetting tendency and exhibits good absorption properties.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: August 5, 1997
    Assignee: Molnlycke AB
    Inventors: Goran Brohammer, Berit Rosseland, Magnus Qvist, Berith Porso
  • Patent number: 5635201
    Abstract: A method and apparatus for manufacturing a wound dressing, and a wound dressing produced thereby. The upper surface of a perforated carrier material (2) is coated with a curable silicone mixture (3) and cold air is blown onto the underside of the coated carrier material. Heat is then applied to the silicone mixture until it has cured to a silicone gel.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: June 3, 1997
    Assignee: Molnlycke AB
    Inventor: Tomas Fabo
  • Patent number: 5634915
    Abstract: A method of producing an absorbent structure in an absorbent article includes the steps of compressing an air laid web of cellulose fibers into a dry-formed sheet having a first density of between 0.2-1.0 g/cm.sup.2 and mechanically softening the compressed sheet by a noncutting method to a second density, which is lower than the first density, whereby the sheet is delaminated so as to form a plurality of partially separated thin fiber layers, each of which layers exhibits a density which corresponds to the first density.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: June 3, 1997
    Assignee: Molnlycke AB
    Inventor: Eje Osterdahl
  • Patent number: D387159
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: December 2, 1997
    Assignee: SCA Molnlycke AB
    Inventors: B.ang.rd Eiterjord, Kent Edgren