Patents Assigned to Molnlycke AB
  • Patent number: 5609702
    Abstract: The present invention relates to a method for mutually bonding at least two moving continuous material webs of material (1,5) to form a laminate (12) which includes at least one puckered material layer. A first and second web (1,5) are advanced at different speeds (V.sub.1, V.sub.2) to a web bonding means (4) in which the webs are mutually bonded and the resultant laminate (12) is further advanced at the lower speed (V.sub.2). Because of the difference in speed between the two webs, that web (1) which moves at the higher speed (V.sub.1) at the web bonding moment is puckered while the other web (5) remains smooth. The invention also relates to an arrangement for mutually bonding two material webs (1,5) in accordance with the method, and to an absorbent article (17) which includes a liquid-receiving outer layer (20) which contains at least one puckered, first liquid-permeable layer (21) and at least one smooth, second liquid-permeable layer (22).
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: March 11, 1997
    Assignee: Molnlycke AB
    Inventor: Verner E. Andersen
  • Patent number: 5607546
    Abstract: An absorbent, chemithermomechanical pulp produced from lignocellulosic material with a wood yield above 88%, a low resin content <0.15%, a long fiber content above 70%, a short fiber content below 10% and a shive content below 3%. The method for producing the pulp comprises the steps of impregnating, preheating, defibering, and washing the material. The impregnation and preheating of the chips are effected in one and the same vessel over a combined time period of at most 2 minutes, particularly at most 1 minute, preferably at most 0.5 minutes; using a warm impregnating liquid having a temperature of at least 100.degree. C., suitably at least 130.degree. C. and preferably having essentially the same temperature as in the preheating process; and preheating the chips at a temperature of 150.degree.-175.degree. C., preferably 160.degree.-170.degree. C.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: March 4, 1997
    Assignee: Molnlycke AB
    Inventors: Hans H oglund, Roland B ack, Ove Danielsson, Bo Falk
  • Patent number: 5601921
    Abstract: Aluminum salt impregnated organic pulp fibers for use in absorption articles are disclosed. The fibers have an aluminum content of 3-100 g/kg based on the weight of dry pulp. The pulp fibers are in the form of fluff and, when disposed in a layer, exhibit increased absorption rates and improved dispersion of liquid in horizontal and vertical directions. The fibers, in the form of an aqueous suspension, are impregnated with aluminum salt in aqueous solution at a pH of 5-11, preferably 8.5-9.5 and most preferably at a pH of 9. Impregnation may optionally be carried out in the presence of a silicate.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: February 11, 1997
    Assignee: Molnlycke AB
    Inventor: Inger V. Eriksson
  • Patent number: 5582668
    Abstract: A method and an arrangement for mounting elastic elements (T) on an elongated, moving material web (M), in which an elastic element extends between two holder elements (H) which are moved in a given direction and which elastic element extends essentially at right angles to the movement direction of the holder elements. According to the invention, different points on an elastic element which are mutually displaced transversely in relation to the movement direction are moved at mutually different speeds in relation to one another, and the elastic element is fastened to the material web subsequent to having achieved given distances in the movement direction between the different points on the elastic element, as a result of the different movement speeds.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: December 10, 1996
    Assignee: Molnlycke AB
    Inventor: Robert Kling
  • Patent number: 5556393
    Abstract: An insert intended to be worn by a male incontinent and which, in use, is worn around the wearer's genitals, within an absorbent article, such as a diaper or an incontinence guard. The insert has a basin-like configuration and includes at least one opening (12) which enables liquid to flow through the insert, and elastic devices (4, 5) are disposed in the edge parts (6, 7) of the insert, such that, in use, the insert will retain its basin-like configuration and be held securely around the wearer's genitals.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: September 17, 1996
    Assignee: Molnlycke AB
    Inventor: Peter R onnberg
  • Patent number: 5549593
    Abstract: The combination of a absorbent article such as an incontinence protector, a diaper or the like, and a waist belt for supporting the absorbent article. The waist belt and absorbent article have coacting hook members and apertures thereon by which the diaper and the waist belt are releasably secured to each other.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: August 27, 1996
    Assignee: Molnlycke AB
    Inventors: Birgitta Ygge, Terje Vigmo
  • Patent number: 5546960
    Abstract: The present invention relates to a surgical drape includes an absorbent sheet (1) and a fluid-impermeable sheet (2) attached thereto. According to the invention, the fluid-impermeable sheet (2) is provided with projections (3) on that side which lies distal from the absorbent sheet (1).
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: August 20, 1996
    Assignee: Molnlycke AB
    Inventor: Tomas Billgren
  • Patent number: 5540922
    Abstract: An absorbent wound dressing having a layer of hydrophobic silicone gel (3) which is intended to lie against the wound surface when the dressing is worn. A layer of carrier material (2; 7) carries the gel layer and affords the requisite strength thereto. An absorbent body (5) is placed on that side of the carrier material and gel layer which lie distal from the wound surface in use. The carrier material and the gel layer have mutually coinciding penetrating perforations (4) at least within the region of the absorbent body. A fluid barrier layer (6) is provided on that side of the dressing which lies distal from the wound surface in use.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: July 30, 1996
    Assignee: Molnlycke AB
    Inventor: Tomas Fabo
  • Patent number: 5517832
    Abstract: A panty brief is made by flat knitting a front piece (1) and a back piece (1'), leg openings (8,9) being formed at a marginal edge zone (6) at the bottom of the panty brief. The marginal bottom edge zones (6) are partially made of soluble yarn (8) for forming larger stitches (19,20) and thereby a looser structure in the panty brief after dissolution of the yarn.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: May 21, 1996
    Assignees: Tytex A/S, Molnlycke AB
    Inventor: Johannes N. Kristensen
  • Patent number: 5498115
    Abstract: The present invention relates to a distributor for particulate material comprising a cylinder and a feeder screw mounted therein for conveying particulate material in the cylinder from an inlet to an outlet.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: March 12, 1996
    Assignee: Molnlycke AB
    Inventor: Robert Perneborn
  • Patent number: 5492759
    Abstract: Fibres which have an increased specific surface area and improved absorption properties, preferably intended for use in the form of fluff pulp in absorption articles such as diapers, incontinence guards, etc., in which the fibres present a porous layer of hydrophilic chemicals anchored on the fibre surface; a method of producing such fibres, their use in absorption articles and an absorption material which includes the fibres.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: February 20, 1996
    Assignee: Molnlycke AB
    Inventors: Inger V. Eriksson, Goran E. Annergren, Lars E. R. Wagberg
  • Patent number: 5486168
    Abstract: A male incontinence guard includes an inner, liquid permeable casing layer; an outer, liquid impermeable casing layer; an absorbent pad having a first end and enclosed between said layers so as to include a first side edge on one side of said pad and a second side edge on an opposite side of said pad; said absorbent pad narrows at the first end; a first elastic device attached in a prestretched state to the inner casing layer and extends from the first end along at least a part of said first side edge; and a second elastic device attached in a prestretched state to the inner casing layer and extends from the first end along at least a part of said second side edge; said elastic devices arranged such that contraction of said elastic devices causes said inner casing layer at the first end of said pad to take a concave shape and said outer casing layer at said first end of said pad to take a convex shape.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: January 23, 1996
    Assignee: Molnlycke AB
    Inventors: Bo Runeman, Peter Ronnberg
  • Patent number: 5486273
    Abstract: 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: Grant
    Filed: December 27, 1991
    Date of Patent: January 23, 1996
    Assignee: Molnlycke AB
    Inventors: Urban Widlund, Roy Hansson
  • Patent number: 5454802
    Abstract: An absorbent article, such as a sanitary napkin or incontinence guard, comprises a liquid-impermeable surface layer which is remote from the wearer when the article is worn, a liquid-permeable surface layer which faces towards the wearer in use, and an absorbent pad which is contained between the two surface layers. The absorbent pad is arched in a transverse direction, at least at its center part, and therewith exhibits a convex surface on the side of the pad which faces the wearer in use. The edges of the article are restrained from flexing toward the liquid-permeable surface, and the transverse arch is maintained by a restraining device attached to the longitudinal edges of the article.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: October 3, 1995
    Assignee: Molnlycke AB
    Inventors: Bengt Lindquist, Eva Vastag
  • Patent number: 5454804
    Abstract: 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: Grant
    Filed: April 23, 1993
    Date of Patent: October 3, 1995
    Assignee: Molnlycke AB
    Inventor: Urban Widlund
  • Patent number: 5447506
    Abstract: The present invention relates to an absorption body intended for an absorbent product, such as a sanitary towel or an incontinence guard, and comprising an absorbent material, preferably cellulose fluff, which increases in quantity continuously from the edge margins of the article in towards the center part thereof. According to the invention, the absorption body is compressed to an essentially flat shape and exhibits a degree of compression which increases continuously from the edge margins towards the center part of the body. The invention also relates to a method of producing an essentially flat absorption body, the density of which increases continuously from the edge margins in towards the center part thereof.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: September 5, 1995
    Assignee: Molnlycke AB
    Inventor: Bengt Lindquist
  • Patent number: 5423787
    Abstract: The invention relates to an absorbent article, such as a sanitary napkin, a panty guard or an incontinence guard, comprising an absorbent pad enclosed in a casing (1, 2). The invention is characterized in that the absorbent body (3) comprises a first absorbent layer (5) which includes a mixture of hydrophilic fibers and superabsorbent material, and a second absorbent layer (6) of liquid-absorbent fiber material which is highly compressed and thereby has good liquid-spreading ability. The first absorbent layer (5) is placed on that side of the article which is intended to face towards the wearer in use, and the second absorbent layer (6) is in direct connection with the first absorbent layer (5) on that side of the article which is distal from the wearer in use.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: June 13, 1995
    Assignee: Molnlycke AB
    Inventor: Monica M. L. Kjellberg
  • Patent number: 5415717
    Abstract: An arrangement for depositing particles onto a moving material web includes a particle dispenser and a perforated belt which moves over the material web. According to the invention, the particle dispenser is intended to dispense particles continuously in a uniform and wide flow whose width is equal to or somewhat greater than the width of the hole-pattern of the belt and the belt is spaced at a distance from the material web which is at least sufficiently large for the particles deposited on the material web to be accommodated between the belt and the web. The arrangement also includes means which function to remove particles caught by the belt without the particles falling down onto the underlying material web. These means are located downstream of the particle dispenser. The invention also relates to a method for depositing particles to a moving material web.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: May 16, 1995
    Assignee: Molnlycke AB
    Inventor: Robert Perneborn
  • Patent number: 5415865
    Abstract: An agent which possesses antimicrobial properties and a minimum tendency, or a completely discontinued tendency, to produce contact allergic reactions or toxic effects includes a mixture of a compound which produces Zn.sup.2+ -ions and one or more so-called resin acids or other resin compounds or resin acid derivatives present in the purest possible form, and to the use of the agent in preparing skin, wound, teeth and mucus-membrane treatment products, and to such products as insulating material, building material, paper, surface treatment material, disinfectants, cosmetics and like products which contain conventionally different types of resins.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: May 16, 1995
    Assignee: Molnlycke AB
    Inventors: Thor Soderberg, Stig Holm, Goran Hallmans
  • Patent number: D373277
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: September 3, 1996
    Assignee: Molnlycke AB
    Inventor: Giorgetto Giugiaro