Patents by Inventor Margareta Wennerback

Margareta Wennerback 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).

  • Publication number: 20090306616
    Abstract: A pant type absorbent article having a core region includes an absorbent core and a chassis region surrounding the core region. The article in at least a part of the chassis region includes a coversheet in the form of an elastic laminate constituting the sole component of the chassis in at least 20% of the total surface area of the article. The elastic laminate has a tensile strength of at least 15 N/25 mm both in the longitudinal and transverse directions of the article and a tensile strength in the transverse direction of the article which is no more than 2.5 times and preferably no more than 2 times higher than the tensile strength in the longitudinal direction of the article. The force required to extend the elastic laminate 10% in the longitudinal direction of the article is no more than 5 N/25 mm.
    Type: Application
    Filed: November 13, 2006
    Publication date: December 10, 2009
    Applicant: SCA Hygiene Products AB
    Inventor: Margareta Wennerbäck
  • Publication number: 20090208703
    Abstract: A method for producing an elastically stretchable laminate having at least three layers, the method including the steps of: a) producing a first laminate having a first non-elastic fibrous nonwoven web and an elastic film; b) activating the first laminate by incremental stretching in at least one activation direction to render the first laminate elastically stretchable; c) stretching the activated first laminate to 10-200% in the activation direction; and d) laminating the stretched first laminate to a second non-elastic nonwoven web. An elastically stretchable laminate produced in accordance with the method is also disclosed.
    Type: Application
    Filed: May 12, 2006
    Publication date: August 20, 2009
    Applicant: SCA Hygiene Products AB
    Inventors: Margareta Wennerbäck, Jan Wästlund-Karlsson, Elisabeth Lakso
  • Publication number: 20090038751
    Abstract: A method for production of disposable hygienic absorbent articles (12) in which each article has a substantially homogenous elastic laminate web (14) having a maximum elastic extensibility in a first direction of at least 40%, preferably at least 60%, and most preferably at least 80%, under a peak load Fp, and an absorbent core (16) attached to the elastic laminate web. The method including the steps of providing a continuous length of the elastic laminate web (14); advancing the continuous length of the elastic laminate web in a direction of travel (A) corresponding to the first direction; attaching individual absorbent cores (16) to the continuous length of the elastic laminate web at spaced intervals, and forming individual articles (12) from the thus assembled individual absorbent cores and the continuous length of said elastic laminate web.
    Type: Application
    Filed: September 29, 2004
    Publication date: February 12, 2009
    Applicant: SCA Hygiene Products AB
    Inventors: Kent Hermansson, Jan Wastlund-Karlsson, Margareta Wennerback, Carina Hedlund, Niclas Norrby
  • Publication number: 20080114325
    Abstract: An absorbent article such as a diaper, pant diaper, a sanitary pant or incontinence garment has at least one first elastic web material which is ultrasonically welded to at least one second web material along at least one weld seam. The second web material is different to the first elastic web material and said second web material has a degree of elasticity which is different to the elasticity of the first elastic web material. The ultrasonic weld seam between the first elastic web material and the second web material is reinforced to have a weld strength in a direction transverse to the weld seam which is at least 5 N/25.4 mm. The disclosure particularly relates to pant-type absorbent articles.
    Type: Application
    Filed: January 14, 2008
    Publication date: May 15, 2008
    Applicant: SCA Hygiene Products AB
    Inventors: Kerstin Edwall, Margareta Wennerback, Elisabeth Lakso
  • Publication number: 20080033387
    Abstract: A pant type absorbent article such as a pant diaper, a sanitary pant or incontinence pant, the article having a core region including an absorbent core and a chassis region surrounding the core region. The article at least in part of the chassis region has an outer coversheet in the form of an elastic laminate having a Softness (S) according to Kawabata of at least 20. The laminate includes first and second layers of fibrous material and an elastic film layer located between the first and second fibrous layers.
    Type: Application
    Filed: June 22, 2004
    Publication date: February 7, 2008
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Jan Wastlund-Karlsson, Margareta Wennerback
  • Publication number: 20070293833
    Abstract: A pant-type absorbent article having an absorbent assembly having an absorbent core and a chassis, wherein the front and back portions are joined to each other along two opposite longitudinal side edges to define a waist-opening and a pair of leg-openings, at least one of the front and back portions has an elastic web material, a crotch portion located between the front portion and the back portion in the longitudinal direction of the article, the front portion having a length in the longitudinal direction, the back portion having a length in the longitudinal direction, and the crotch portion having a length in the longitudinal direction, the absorbent assembly overlapping a distance with both the front and back portions, the article having a longitudinal and a transverse direction, wherein the absorbent assembly overlaps no more than 20% of the surface area of each of the front and back portions.
    Type: Application
    Filed: August 22, 2007
    Publication date: December 20, 2007
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventor: Margareta Wennerback
  • Publication number: 20070239131
    Abstract: An absorbent article of the kind which is worn as a pair of absorbent pants with a waist opening defined by a rear waist edge and a front waist edge, and two leg openings. The absorbent article preferably includes an absorbent body attached to a covering. The covering preferably includes an elastic material arranged within an area which extends at least from the front waist edge to the leg openings. The elastic material is preferably treated. The treated elastic material preferably has no or reduced elasticity within a portion of the covering overlapping the absorbent core.
    Type: Application
    Filed: June 28, 2004
    Publication date: October 11, 2007
    Applicant: SCA Hygiene Products AB
    Inventors: Kent Hermansson, Carina Hedlund, Niclas Norrby, Jan Wastlund-Karlsson, Margareta Wennerback