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Class 162/368 - Rotary pervious cylinder


Subclass of Class 162 - Paper making and fiber liberation
Definition: Apparatus in which the moving suction device is a cylinder
No. of patents: 50
Last issue date: 05/27/2008


1    
NumberTitleIssue Date
7377994Method and device for threading a web in the reeling of a paper or board web
A web is threaded in the reeling of a paper or board web, by passing a web tail strip (W) into a reeling nip between a reeling drum (10) and a reel spool (12), on which a web roll is formed. The tail strip (W) is passed into the reeling nip by a suctio...
05/27/2008
7351309Roll in a paper or board machine and a dryer group in a paper or board machine
A roll in a paper or board machine has a roll frame or center shaft (15) with bearings mounted at its ends and a groove-like surface structure (10). There is a contact between the surface structure and the center shaft so that an essentially closed str...
04/01/2008
7300553Arrangement for a wire section of a paper or board machine
A web is formed between two wire loops (13, 14), in a wire section of a paper or board machine, in connection with which dewatering elements (12, 17, 15, 28) are placed and in which water is drained from a stock suspension from between the two wires (
11/27/2007
7291249Apparatus for the manufacture of a structured fiber web
An apparatus for the manufacture of a structured fiber web including an imprinting fabric, a first pressure field device, a second pressure field device and a drying cylinder. The fiber web is formed and carried on the imprinting fabric with an initial dry content o...
11/06/2007
7264693Apparatus for leading a web threading tail over an empty space
An apparatus for leading a web threading tail over an empty space formed between two surfaces, between which the apparatus (10) is arranged. The apparatus (10) includes a belt loop (28) permeable by air, which is supported by turnover rolls (...
09/04/2007
7112258Method and apparatus for making a tissue paper with improved tactile qualities while improving the reel-up process for a high bulk web
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. ...
09/26/2006
6986831Suction roll of a paper machine
A paper machine suction roll has a perforated shell (10) and a static suction box (11) sealed against the inner surface of the shell (10) to create a suction zone (11a) on the roll surface as it rotates. Holes (14) extending...
01/17/2006
6986830Method and a machine for the manufacture of a fiber web
A method and machine for the manufacture of a fiber web, in particular of a tissue web or of a hygienic web, in which the fiber web is formed on a soft clothing with fine pores and the clothing is guided over a surface subject to suction and in which the fiber web i...
01/17/2006
6884323Vented main roll for press assembly in a paper machine
A roll for use in a paper machine includes a roll shell having an inner periphery. A roll cover is positioned around the roll shell and has an outer surface. The roll cover and/or the roll shell include at least one main flow channel positioned radially inward from ...
04/26/2005
6776877Twin wire former for the production of a fiber web from a fiber suspension
The invention relates to a twin wire former for the production of a fiber web specifically a paper, cardboard or tissue web, from a fiber suspension. The invention is characterized in that the rotating forming roll has an open volume and is a non-suction type...
08/17/2004
6682632Roll for a paper or board machine
The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, end flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantl...
01/27/2004
6638395Paper machine and process
Machine and process for at least one of producing and finishing a fibrous material web. The machine includes a press section, for dewatering the fibrous web, with a press nip, a former, located before, relative to a web travel direction, the press section...
10/28/2003
6416631Pressing apparatus having semipermeable membrane
An apparatus for processing a continuous web having a first side and a second side includes a plurality of rollers are arranged for cooperative rotation. The plurality of rollers are positioned to define a corresponding plurality of nips. The continuous w...
07/09/2002
6402896Roll for a paper or board machine
The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, end flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantl...
06/11/2002
6358370Sealing arrangement for a suction box of a suction roll
A suction box comprises a fixed frame part (11) and a lid part (12) disposed in the frame part (11) to be movable. The moving lid part (12) moves relative to the fixed frame part (11) with the aid of gravity or with the aid of expansion members (15a, 15b,...
03/19/2002
6334934Sealing device and process for sealing pressure zones in a paper-making machine
Sealing device and process for laterally sealing at least one excess pressure or vacuum zone adjoining a moving surface in a paper-making machine. The sealing device has at least one sealing element arranged in a receptacle area of a holder and is movable...
01/01/2002
6284103Suction roll shell in a paper-making machine and method of manufacturing same
A method of manufacturing a suction roll shell for use in a paper-making machine utilizes a mandrel with a length and a cross-sectional area corresponding to the shell. The mandrel has a plurality of generally radially extending holes. A plurality of pins...
09/04/2001
6254732Method for loading a seal of a suction roll and a sealing construction thereof
A sealing construction for loading a seal against a suction roll in a paper machine includes a seal having a wear surface, side surfaces and a lower surface. The seal is fitted from its holder to the structure of a suction box which is inside the suction ...
07/03/2001
6203666Method and device for paper web manufacturing
In the present invention, in a process in which a fiber suspension supplied in a flat layer manner is subjected to natural dehydration, pressure dehydration, or suction dehydration, while circulating a cylindrical suction cylinder, and thereby, dehydratio...
03/20/2001
6200427Suction roll for the formation or treatment of a material web, such as in particular a paper, card or textile web
Suction roll for the formation or treatment of a material web that includes an outer suction roll jacket comprising a perforated rotating hollow cylinder, a non-perforated support body arranged to extend through the outer suction roll jacket and to suppor...
03/13/2001
6197160Apparatus for dewatering a pulp web
The invention refers to a process for dewatering a pulp web, particularly a chemical pulp web, where dewatering takes place between twin wire belts or felts in an initial dewatering zone with a set area pressure and then in a second dewatering zone. It is...
03/06/2001
6190506Paper making apparatus having pressurized chamber
Apparatus and method for forming a continuous web on a forming fabric includes providing a pressurized chamber, processing the forming fabric through the pressurized chamber, and distributing a pressurized flow of a slurry having a first composition in th...
02/20/2001
6105788Composite screen
A papermakers' screen basket for pressure screening of papermaking stock or for pressure filtering is formed with a support core formed with honeycomb like cells that extend radially in the direction of flow through the screen basket, and a thin covering ...
08/22/2000
5985159Method and device for concentrating a suspension
A method for concentrating a suspension comprises the steps of providing a first surface; providing a second surface; introducing a suspension; moving the second surface relative to the first surface; and applying suction to the second surface. The first ...
11/16/1999
5968319Dual external suction boxes for suction roll for a paper machine
Suction roll for a paper machine for dewatering a material web guided on transport belt in a web run direction. The suction roll includes a roll jacket over which the transport belt is guided, a first, external suction box that partially encompasses the s...
10/19/1999
5925220Suction roll of a paper machine having a noise damping chamber
A suction roll for a paper machine or the like including a perforated annular roll shell which is rotatable. A stationary suction box inside the roll shell with respect to which the shell rotates. The suction box is defined between two circumferentially s...
07/20/1999
5915648Perforated roll for guiding a flexible material web
A drum for guiding a material web, in particular a paper web. The drum has a jacket and a hollow interior. A respective cover at each end of the jacket. A respective bearing journal at each cover for supporting the roll to rotate. The jacket has a plurali...
06/29/1999
5635034Suction roll or cylinder and method for removing air from a suction roll or cylinder
A method for removing air from a suction roll/suction cylinder and a suction roll/suction cylinder including a roll mantle, end flanges connected to the roll mantle and axle journals for revolvingly supported the roll mantle. The mantle has numerous perfo...
06/03/1997
5580424Apparatus and method for sealing a suction box of a suction roll in a paper machine
A sealing construction for a suction box of a suction roll in a paper machine and a method for sealing a suction roll in which a seal is arranged in a holder and loading members, preferably at least one loading hose, are arranged between the holder and th...
12/03/1996
5535527Method and arrangement in a multi-cylinder dryer of a paper machine
A method for causing adherence of a web to a drying wire so as to prevent the effects of centrifugal forces and of other air-flow phenomena, which effects attempt to separate the web from the drying wire in dryer groups having a single-wire draw and arran...
07/16/1996
5500092Press unit of a paper machine for the manufacture of tissue paper
The invention is directed to a press system of a paper machine for making tissue, including a crepe drying cylinder, a press roll with a smooth surface, an extended-shoe press unit, and a press roll fashioned as a suction roll or grooved roll. A first pre...
03/19/1996
5480545Cross braced vacuum washer
A washer drum is provided with unique cross bracing which prevents twisting, reduces vortex formation in radial inflow ports, and further provides support for the decking between closely spaced intermediate heads....
01/02/1996
5470471Anti-rewet deck for press rolls
An anti rewet deck is provided for press rolls used to increase consistency of fibrous pulp slurry from approximately 4 percent up to about 30 to 50 percent. This is accomplished by biasing the location of the drainage holes in the roll shell to the forwa...
11/28/1995
5466343Suction element for a paper machine
A suction roll for a paper machine in which a stationary suction shoe is arranged inside a revolving mantle loop and is connected to a source of negative pressure. The mantle loop is a substantially water-receiving and permeable fabric-sock loop that rece...
11/14/1995
5456802Threading vacuum sheave for a tissue calender
A vacuum/blowing sheave on the end of the lower calender roll of a papermaking machine threads a tissue web tail from a Yankee dryer to a take-up reel through the calender. The sheave is positioned adjacent to the outlet of the threader tube from the Yank...
10/10/1995
5281343Vacuum filtration system and method of filtering pulp fibers from pulp slurry using the same
A method and apparatus for filtering pulp fibers from a pulp slurry, using a combination of vacuum, hydrodynamic and hydrostatic forces in order to achieve a more effective deposition of pulp fibers onto the filter surface and enhanced flow of filtrate th...
01/25/1994
5151156Suction roll with deflector pieces in the holes, for a dryer group of a paper making machine
The suction roll of a dryer group is in the path of the web and of the web support belt from an upstream dryer cylinder to a downstream dryer cylinder. The suction roll has an annular roll shell having a plurality of radial holes and being free of station...
09/29/1992
5135614Suction roll for a paper making machine and a method for producing a desired pressure profile for the suction roll
The invention concerns a suction roll (10) for a paper making machine, on which the paper web is pressed towards the outer face of the roll mantle. The suction roll (10) is divided, in the axial direction of the roll, into at least three vacuum spaced (A
08/04/1992
5059286Cylinder for the guiding of endless webs of material
A hollow cylinder exhibits an internal body, which forms a sickle-shaped space by means of a partial cylindrical surface arranged eccentrically to the hollow cylinder, with a smaller radius than its internal radius. In this space there is created a vacuum...
10/22/1991
5024729Suction roll with turbulence suppression element
The invention relates to a suction roll (10) comprising a turbulence suppression element (16) located in the vicinity of the end of an external suction pipe (15). The turbulence suppression element (16) comprises at least one sheet member and is fitted re...
06/18/1991
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