Patents by Inventor Johan Ulf Ragard

Johan Ulf Ragard 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).

  • Patent number: 8246782
    Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder of a papermaking machine, and for structuring the web, includes an impermeable transfer belt that passes through the press nip along with the paper web, and a permeable structuring fabric for transfer of the web onto the drying cylinder, the structuring fabric being arranged in a loop within which a suction transfer device is disposed. A web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and a suction zone of the transfer device includes a transfer point spaced a distance D from the press nip. The belt is arranged to bring the web into contact with the structuring fabric in the suction zone for a length L, such that suction is exerted on the paper web to transfer the paper web from the belt onto the structuring fabric at the transfer point.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: August 21, 2012
    Assignee: Metso Paper Karlstad AB
    Inventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Patent number: 8206555
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: June 26, 2012
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Publication number: 20120103550
    Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder of a papermaking machine, and for structuring the web, includes an impermeable transfer belt that passes through the press nip along with the paper web, and a permeable structuring fabric for transfer of the web onto the drying cylinder, the structuring fabric being arranged in a loop within which a suction transfer device is disposed. A web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and a suction zone of the transfer device includes a transfer point spaced a distance D from the press nip. The belt is arranged to bring the web into contact with the structuring fabric in the suction zone for a length L, such that suction is exerted on the paper web to transfer the paper web from the belt onto the structuring fabric at the transfer point.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 3, 2012
    Inventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Publication number: 20120073777
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Application
    Filed: December 1, 2011
    Publication date: March 29, 2012
    Applicant: METSO PAPER KARLSTAD AB
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Patent number: 8092651
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: January 10, 2012
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Patent number: 8075738
    Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder (52) of a papermaking machine, and for structuring the web, comprises an impermeable transfer belt (35) having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt (33) and the transfer belt, and a permeable structuring fabric (37) for transfer of the web onto the drying cylinder, the structuring fabric having a structured surface and being arranged in a loop within which a suction transfer device (38) is disposed, said suction transfer device having a suction zone (41).
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: December 13, 2011
    Assignee: Metso Paper Karlstad AB
    Inventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Patent number: 7988829
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: August 2, 2011
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Publication number: 20110126998
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 2, 2011
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Publication number: 20100326616
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Application
    Filed: September 3, 2010
    Publication date: December 30, 2010
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Patent number: 7811418
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: October 12, 2010
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Publication number: 20100139881
    Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder (52) of a papermaking machine, and for structuring the web, comprises an impermeable transfer belt (35) having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt (33) and the transfer belt, and a permeable structuring fabric (37) for transfer of the web onto the drying cylinder, the structuring fabric having a structured surface and being arranged in a loop within which a suction transfer device (38) is disposed, said suction transfer device having a suction zone (41).
    Type: Application
    Filed: October 26, 2007
    Publication date: June 10, 2010
    Applicant: METSO PAPER KARLSTAD AB
    Inventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Publication number: 20080156450
    Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
    Type: Application
    Filed: October 26, 2007
    Publication date: July 3, 2008
    Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
  • Patent number: 6998018
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: February 14, 2006
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Rågård
  • Publication number: 20040261962
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Application
    Filed: July 28, 2004
    Publication date: December 30, 2004
    Applicant: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Patent number: 6797115
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: September 28, 2004
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Rågård
  • Publication number: 20030221807
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Application
    Filed: February 26, 2003
    Publication date: December 4, 2003
    Applicant: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Ragard