Metso Paper Karlstad Ab

Albany International Corporation

Metso Paper Karlstad Aktiebolag (ab)

Metso Paper Karlstad

Metso Paper Karlstad Aktiebolag

Ingvar Berndt Erik Klerelid

Frank Stephen Hada

Jeffrey Dean Holz

Paul Douglas Beuther

Hans Ivarsson

Johan Ragard

Tord Gustav Gustavsson

Bo-Christer Aberg

John J Lafond

Cary P Johnson

Jan Anders Erikson

Ola Thomasson

Joakim Norrman

Dennis Edward Jewitt

Anders Lindén

Johan R&aring;g&aring;rd

Lars-Erik Roland &Ouml;nnerl&ouml;v

Ingmar Andersson

Sören Sven Eriksson

Lars-Erik Roland Önnerlöv

Leif Sören Videgren

Johan Ulf Rågård

Leif S&ouml;ren Videgren

Lars B Nilsson

A structuring layer of a structuring belt for structuring a wet fibrous web in a press section of a tissue papermaking machine for manufacturing high bulk tissue paper, the structuring layer having a web-carrying side with a surface for cooperating with the fibrous web, the surface having depressions distributed over the web-carrying side and forming a three-dimensional structure of the surface. The depressions altogether constitute 20-80% of the surface. Each depression has a dimension l of 0.25-2.5 mm in a first direction in the plane of the top surface area, a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area, such directions being at right angles to each other, a mean depth d of 0.05-0.6 mm, and an area a as measured in the plane of the top surface area of 0.063-5.0 mm.

Structuring belt, press section and tissue papermaking machine for manufacturing a high bulk creped tissue paper web and method therefor

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.

Apparatus with an impermeable transfer belt in a papermaking machine, and associated methods

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.

Methods employing an impermeable transfer belt in a papermaking machine

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, comprises an impermeable transfer belt () having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt () and the transfer belt, and a permeable structuring fabric () 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 () is disposed, said suction transfer device having a suction zone (). According to the invention the web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and that the suction zone includes a transfer point () spaced a distance D from the press nip along which the belt runs, the belt being 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.

Papermaking machine employing an impermeable transfer belt, and associated methods

Paper machine for manufacturing a fiber web of paper without through air drying (TAD) or pressing, comprising: a wet end, having a wire section with at least one forming wire, a clothing, being air and water permeable, and a dewatering unit for dewatering the fiber web; and a drying section, comprising a drying surface for the fiber web; and also a transfer roll for transferring the fiber web to the drying section, wherein the fiber web is supported by said clothing from the wire section all the way to and over the transfer roll. The clothing has a three dimensional structure for structuring the fiber web.

Paper machine and method for manufacturing paper

A method of ensuring the flatness of a vane that is mounted in a headbox by means of a mounting arrangement including engagement dowels for cooperation with a downstream support wall of a transverse groove, said vane being affected during operation by shearing forces from the stock and by retaining forces from the mounting arrangement. In accordance with the invention outer engagement dowels are mounted at the side edges of the vane to cooperate during a specific period of time, as the only engagement dowels with the downstream support wall in order to take up said shearing forces, whereby tensile stresses will arise in the downstream end portion of the vane in the cross machine direction. The invention also relates to a headbox having such a mounting arrangement and the mounting arrangement per se in which the vane within and downstream of an inner area of the upstream end portion of the vane is arranged to move freely in the machine direction in relation to said downstream support wall during said period of time.

Method of ensuring flatness of a vane in a headbox by means of a mounting arrangement, headbox with such a mounting arrangement, a mounting arrangement and vane therefor

A dry end section for a paper-making machine for producing a high-bulk tissue is provided. Such a machine comprises a through-air dryer adapted to finally dry a paper web and a through-air drying fabric configured to transport the web through the through-air dryer. A separating device is included for facilitating separation of the web from the through-air drying fabric. A reel is also provided and is configured to receive the web thereon. The web is received directly on the separating device or on a fabric wrapped about the separating device. In some instances, the web may be compressed between the separating device and an adjacent roll or by a web-compressing device disposed along the fabric transporting the web. The web is then transported to the reel directly from the fabric or other support mechanism extending between the separating device and the reel, without free draw of the web. Associated methods are also provided.

Method and apparatus for making a tissue paper with improved tactile qualities while improving the reel-up process for a high bulk web

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.

Method and apparatus for making a creped tissue with improved tactile qualities while improving handling of the web

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Karlstad, Sweden

Ingvar Berndt Erik Klerelid