Patents by Inventor Eva-Li Saarvali

Eva-Li Saarvali 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: 20070003736
    Abstract: Method for producing a multi-ply web (19) of flexible material, such as paper and nonwoven material, including at least one first (1) and one second ply (8) which are interconnected by gluing in a glue pattern (12;24). The multi-ply web is produced by applying glue in a glue pattern to a first web shaped material (1) from a patterned glue transfer roll (5), laminating a second web shaped material (8) with the first web shaped material (1) in a press nip between a lamination roll (10) and an impression roll (7). After lamination the laminated web (19) is cut and/or perforated (22;25) in register with the glue transfer and lamination while still residing on the impression roll (7). There is also provided a multi-ply web which is cut or perforated in a pattern (22;25) which is in register with the glue pattern (12;24).
    Type: Application
    Filed: September 6, 2006
    Publication date: January 4, 2007
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Eva-Li Saarvali, Anders Andersson
  • Patent number: 7153385
    Abstract: Method for producing a multi-ply web of flexible material, such as paper and nonwoven material, comprising at least one first and one second ply which are interconnected by gluing in a plurality of discrete glue sites. The web is printed with at least one printing pattern which is in register with the glue pattern. The multi-ply web is produced by bringing a first ply in contact with a patterned glue transfer roll, transferring glue to the first ply in a glue pattern, a second ply is brought in contact with the glue applied side of the first ply in a press nip between a patterned lamination roll and an impression roll, the glue transfer roll and the lamination roll being in register with each other and having corresponding patterns.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: December 26, 2006
    Assignee: SCA Hygiene Products AB
    Inventors: Anders Andersson, Anna Mansson, Eva-Li Saarvali, Wolfgang Hof, Ferdinand Hein
  • Patent number: 7063766
    Abstract: Method for producing a multi-ply web comprising at least three plies of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first and second ply are glued together with a first glue pattern and a second and third ply are glued together with a second glue pattern which is applied offset with respect to the first glue pattern.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: June 20, 2006
    Assignee: SCA Hygiene Products AB
    Inventors: Eva-Li Saarvali, Anna Mansson, Anders Andersson
  • Publication number: 20050103434
    Abstract: Method for producing a multi-ply web of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first pattern roll, having a three dimensional pattern of alternating raised and recessed portions transfers glue to a first web shaped flexible material in a first press nip in glue sites covering an area corresponding to between 0.03 and 9% of the total area of the first web material and sparsely distributed over substantially the entire area of the first web material. A second web shaped flexible material is brought in contact with the glue applied side of the first web material in a second press nip between a second pattern roll having a three-dimensional pattern corresponding to that of the first pattern roll, and an impression roll. The first and second pattern rolls are driven in registry.
    Type: Application
    Filed: December 22, 2004
    Publication date: May 19, 2005
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Anders Andersson, Eva-Li Saarvali
  • Publication number: 20040121133
    Abstract: Method for producing a multi-ply web of flexible material, such as paper and nonwoven material, comprising at least one first and one second ply which are interconnected by gluing in a plurality of discrete glue sites. The web is printed with at least one printing pattern which is in register with the glue pattern. The multi-ply web is produced by bringing a first ply in contact with a patterned glue transfer roll, transferring glue to the first ply in a glue pattern, a second ply is brought in contact with the glue applied side of the first ply in a press nip between a patterned lamination roll and an impression roll, the glue transfer roll and the lamination roll being in register with each other and having corresponding patterns.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 24, 2004
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Anders Andersson, Anna Mansson, Eva-Li Saarvali, Wolfgang Hof, Ferdinand Hein
  • Publication number: 20040062916
    Abstract: Method for producing a multi-ply web comprising at least three plies of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first and second ply are glued together with a first glue pattern and a second and third ply are glued together with a second glue pattern which, as seen in the thickness direction of the multi-ply web, is substantially aligned with the first glue pattern.
    Type: Application
    Filed: September 25, 2003
    Publication date: April 1, 2004
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Anna Mansson, Eva-Li Saarvali, Anders Andersson
  • Publication number: 20040009327
    Abstract: Method for producing a multi-ply web comprising at least three plies of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first and second ply are glued together with a first glue pattern and a second and third ply are glued together with a second glue pattern which is applied offset with respect to the first glue pattern.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 15, 2004
    Inventors: Eva-Li Saarvali, Anna Mansson, Anders Andersson
  • Publication number: 20030215602
    Abstract: Method for producing a multi-ply web of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first pattern roll, having a three dimensional pattern of alternating raised and recessed portions transfers glue to a first web shaped flexible material in a first press nip in glue sites covering an area corresponding to between 0.03 and 9% of the total area of the first web material and sparsely distributed over substantially the entire area of the first web material. A second web shaped flexible material is brought in contact with the glue applied side of the first web material in a second press nip between a second pattern roll having a three-dimensional pattern corresponding to that of the first pattern roll, and an impression roll. The first and second pattern rolls are driven in registry.
    Type: Application
    Filed: February 26, 2003
    Publication date: November 20, 2003
    Inventors: Anders Andersson, Eva-Li Saarvali
  • Publication number: 20030198788
    Abstract: Method for producing a multi-ply web of flexible material by gluing the plies. Glue is transferred in subsequent steps to a first web shaped flexible material via at least two patterned glue transfer rolls, in a pattern corresponding to the pattern of the glue transfer rolls. A second web shaped material is brought in contact with the glue bearing side of the first web shaped material in at least one press nip between at least one patterned lamination roll and an impression roll. The at least one lamination roll has a three-dimensional pattern having a shape and configuration so as to apply pressure to the combined first and second web shaped materials substantially only just opposite at least some of the glue bearing areas of the first web shaped material, and is driven in registry with the first and/or second glue transfer roll.
    Type: Application
    Filed: February 26, 2003
    Publication date: October 23, 2003
    Inventors: Anders Andersson, Eva-Li Saarvali
  • Patent number: D523247
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: June 20, 2006
    Assignee: SCA Hygiene Products AB
    Inventors: Eva-Li Saarväli, Ann Wessblad, Åsa Rudberg