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).
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Patent number: 8246782Abstract: 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: GrantFiled: November 4, 2011Date of Patent: August 21, 2012Assignee: Metso Paper Karlstad ABInventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Patent number: 8206555Abstract: 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: GrantFiled: December 1, 2011Date of Patent: June 26, 2012Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20120103550Abstract: 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: ApplicationFiled: November 4, 2011Publication date: May 3, 2012Inventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Publication number: 20120073777Abstract: 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: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: METSO PAPER KARLSTAD ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Patent number: 8092651Abstract: 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: GrantFiled: February 8, 2011Date of Patent: January 10, 2012Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Patent number: 8075738Abstract: 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: GrantFiled: October 26, 2007Date of Patent: December 13, 2011Assignee: Metso Paper Karlstad ABInventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Patent number: 7988829Abstract: 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: GrantFiled: September 3, 2010Date of Patent: August 2, 2011Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20110126998Abstract: 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: ApplicationFiled: February 8, 2011Publication date: June 2, 2011Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20100326616Abstract: 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: ApplicationFiled: September 3, 2010Publication date: December 30, 2010Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Patent number: 7811418Abstract: 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: GrantFiled: October 26, 2007Date of Patent: October 12, 2010Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20100139881Abstract: 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: ApplicationFiled: October 26, 2007Publication date: June 10, 2010Applicant: METSO PAPER KARLSTAD ABInventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Publication number: 20080156450Abstract: 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: ApplicationFiled: October 26, 2007Publication date: July 3, 2008Inventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Patent number: 6998018Abstract: 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: GrantFiled: July 28, 2004Date of Patent: February 14, 2006Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Johan Ulf Rågård
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Publication number: 20040261962Abstract: 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: ApplicationFiled: July 28, 2004Publication date: December 30, 2004Applicant: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Patent number: 6797115Abstract: 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: GrantFiled: February 26, 2003Date of Patent: September 28, 2004Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Johan Ulf Rågård
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Publication number: 20030221807Abstract: 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: ApplicationFiled: February 26, 2003Publication date: December 4, 2003Applicant: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Johan Ulf Ragard