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Assignee: Valmet Paper Machinery Inc.


Location: FI
No. of patents: 110

1      
NumberTitleIssue Date
6197156Press section of a paper machine, in particular for printing paper qualities
A press section of a paper machine, in particular for printing paper qualities whose grammage is in the range of about 40 g/m2 to about 80 g/m2 is disclosed. The press section comprises a pick-up roll having a suction zone on which a...
03/06/2001
5344259Method and device for drilling of holes into a mantle of a cylinder in a paper machine
A method and device for drilling holes into a mantle of a cylinder used in a paper machine are disclosed. The drilling device includes a base frame and a spindle box displaceable on support of the base frame towards a cylinder mantle to be machined. The s...
09/06/1994
5334125Martensite roll
The invention is related to a process for the manufacture of a roll, in particular of a calender roll for a paper machine. In the process, the mantle of the roll is cast or cast and heat-treated and, in the next step, the roll mantle is machined. In the p...
08/02/1994
5331737Method for fixing a balancing material in a roll
A method for fixing a material used for balancing of a roll in which a support and fixing construction for a fluidized balancing material is placed into the roll interior in contact with an inner face of the roll. The fluidized balancing material is then ...
07/26/1994
5326435Method and device in a crawling operation of a press felt in a paper machine
The invention relates to a method and device in the crawling operation of a press felt in a paper machine. The press felt is passed as a closed felt loop through a nip defined between a center roll and a press roll in a press section of the paper machine....
07/05/1994
5303670Device for proportioning of a coating agent onto a moving base
The invention concerns a device for metering of a coating agent onto a moving base, such as a paper or board web. The device includes first and second soft-faced applicator rolls defining a coating nip, through which nip a web is passed. The first applica...
04/19/1994
5304391Method for regulation of the moisture profile of a paper or board web in a film size press
The invention concerns a method for regulation of the moisture profile of a paper or board web in a size press in which the paper or board web (W) is made to run through a nip (N) formed by the rolls (1,2) in the size press. Films (F1,F2
04/19/1994
5299364Arrangement and method for treatment of webs using nozzles with negative pressure
The invention relates to an arrangement of nozzles with negative pressure intended for the treatment of webs. A nozzle directs a drying and supporting gas flow at the web and which has a box construction, and a nozzle space formed at one side of the nozzl...
04/05/1994
5286526Method and device for coating of a moving base
The invention concerns a method for coating of a moving base, such as the face of a back-up roll, paper or board web, or equivalent, with a coating agent. In the method, a blade coater is employed in which a coating blade included in the blade coater and ...
02/15/1994
5285026Reactive sound attenuator, in particular for air ducts in paper mills
The invention concerns a reactive sound attenuator for air-conditioning ducts, in particular for air ducts in paper mills. The sound attenuator includes at least two chambers separated from another by means of a partition wall. The partition wall is provi...
02/08/1994
5279050Grouping of cylinders in the drying section of a paper machine
The invention relates to a grouping of cylinders in a drying section of a paper machine, in which drying section a paper web and a wire are carried meandering from a first heated drying cylinder onto a leading cylinder and from the leading cylinder furthe...
01/18/1994
5273626Adjustable-crown roll
The invention concerns an adjustable-crown roll having a stationary roll axle which is supported on the machine frame by means of articulated bearings, and a roll mantle which is arranged to revolve on the axle. Hydrostatic loading members or an equivalen...
12/28/1993
5269885Press section of a paper or paperboard making machine
The invention concerns a press section of a paper or paperboard making machine, comprising a number of rolls (1, 11, 22, 32, 44, 70) which forms press nips (N1, N2, N3, N4) that dewater the web (W) with each oth...
12/14/1993
5268541Sound attenuator for low frequencies, in particular for air ducts in paper mills
The inventions concerns a sound attenuator for low frequencies for air-conditioning ducts, in particular for intake-air and/or exhaust-air ducts in paper mills. The sound attenuator comprises a frame whose flow duct substantially coincides with the air-co...
12/07/1993
5265812Reeling drum
The invention concerns a reeling drum for a paper or board machine or equivalent, onto which reeling drum a material web, in particular paper or board, is reeled. Axle journals have been fixed to the ends of the reeling drum in a conventional way by means...
11/30/1993
5264247Process for the manufacture of a coating bar for a bar coater
Process for the manufacture of a coating bar for a bar coater, wherein the coating bar is supported substantially over its entire length revolving in a cradle fixed to the frame of the coater. The coating bar is profiled and surface-treated by boronizing....
11/23/1993
5256256Frame construction for a press section of a paper machine
Frame construction for a press section of a paper machine which comprises, in a direction of running of a paper web, first a front frame and then a separate rear frame. On the front and rear frame, press rolls are mounted, at least some of which belonging...
10/26/1993
5246497Coating device for coating of a size-press roll, paper or board
The invention relates to a coating device for coating, e.g. a size-press roll, paper or board or of an equivalent moving base. The coating device comprises a revolving coating bar which rests against a moving base. The coating bar extends across the machi...
09/21/1993
5244448Method and apparatus for regulating the temperature of an adjustable-crown roll
The invention concerns a method and apparatus for regulating the temperature of an adjustable-crown roll. The roll mantle (12) arranged to revolve on the stationary axle (11) of the roll (10) is loaded by passing a pressure medium into a pressure chamber ...
09/14/1993
5240564Method for the control of the nip-pressure profile in a paper making machine
A method and apparatus in the press section of a paper machine for regulating the axial linear-load profiles in its nip or nips (N1,N2,N3). The axial temperature profile(s) of the outer mantle(s) of a press roll or rolls (...
08/31/1993
5240563Compact press section with closed draw of the web in a paper machine
Closed press section in a paper machine, comprising a compact combination of press rolls. Certain of rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center ro...
08/31/1993
5235747Method of manufacture of a roll for use in paper production
The invention concerns a roll for use in the production of paper, in particular a center roll in a press section of a paper making machine, with which the web is in direct contact and from which the web is detached. In the invention, a composite structure...
08/17/1993
5230169Steam and condensate coupling for a drying cylinder in a paper machine
The invention concerns a steam and condensate coupling for a drying cylinder in a paper machine. The steam and condensate coupling includes a piston ring having a seal therein. This stationary, nonrevolving seal is pressed by means of steam pressure again...
07/27/1993
5223099External heating arrangement for a paper web ceramic coated roll in a paper machine
The surface properties of a roll and/or rolls in a paper machine are affected by regulating the temperature of the roll face by means of an external heating device. In the arrangement, a combination of a heating device and a roll coating is used in such m...
06/29/1993
5215628Twin-wire web former in a paper machine
A twin-wire web former in a paper machine includes a covering wire and a carrying wire defining a forming zone, at the beginning of which zone there is a forming gap into which the discharge opening of a headbox feeds a pulp suspension jet. A first formin...
06/01/1993
5214861Blow and air-conditioning device for an inverted cylinder group in the drying section of a paper machine
The invention is related to a blow and air-conditioning device for an inverted cylinder group in a drying section of a paper machine. The inverted cylinder group includes a lower row of drying cylinders and a corresponding row of leading cylinders or roll...
06/01/1993
5211814Wire loading device in a paper machine
A wire loading device in a paper machine, by whose means a mechanical load is applied to the wire of the paper machine across its entire width, is disclosed. By means of this load, a pressure pulse is applied to the fiber layer or web supported by a wire ...
05/18/1993
5210991Method for making the foundation slabs of a paper machine before the installation proper of the machine
The invention concerns a method for making the foundation slabs of a paper machine. In the method, reinforcement strands are fitted inside a mold for a base beam. Before filling-concreting of the mold, a base slab provided with a plurality of foundation b...
05/18/1993
5199623Device for supporting, turning and spreading of a web
A device for contact-free supporting, turning, and spreading of a paper web, comprises a face (K) curved in accordance with the turning of the web (W), in connection with which face (K) the web (W) runs supported by air blown in between the face (K) and t...
04/06/1993
5178731Doctor for a suction roll
The invention concerns a method and a device for removing water out of the perforations in a suction roll wherein a doctor blade is brought into contact with the face of the suction roll. The doctor blade is mounted with its slat face in such an angular p...
01/12/1993
5176940Method for forming a coated roll
The invention concerns a roll or cylinder or roll coating for a pulp machine, paper machine, or paper finishing machine, in which application the roll or equivalent comprises a cylinder mantle of cast iron or steel or any other, equivalent metal, which be...
01/05/1993
5172491Method and device for drawing a web through a group of drying cylinders
A method in a drying group or groups provided with a single-wire draw in a multi-cylinder dryer of a paper machine in the draw of a web. The multi-cylinder dryer comprises drying cylinders heated by means of steam or equivalent, with the web being pressed...
12/22/1992
5170589Method for reconditioning of the sealing face on a drying cylinder of a paper machine and device for reconditioning of the sealing face
A method for reconditioning of the sealing face (11) at the opening of the manhole (10) of a drying cylinder (K) of a paper machine when the cylinder (K) is in its operating position in the paper machine. In the method a separate frame part (13) is attach...
12/15/1992
5170547Method and device for balancing a roll
The present invention concerns a method and a device for the balancing of a roll. Fluidizable balancing agent is placed onto a face of the roll at a location required by the balancing, at which the agent adheres and hardens....
12/15/1992
5167068Method for manufacturing a roll directly contacting a web
The present invention concerns a roll used in the manufacture of paper, for example a central roll in a press or a calender roll, with which the web is in direct contact and from which the web is detached. A coating has been formed onto a cylinder mantle ...
12/01/1992
5163236Method and apparatus for drying webs
A method for use in web drying apparatus, such as a drying section of a coating or paper machine which includes drying cylinders against the outer mantles of which a web to be dried is pressed in direct contact, and wherein the web is carried from one dry...
11/17/1992
5164047Hot-pressing method
A method is provided for the removal of water from a web by hot-pressing while the web is in direct contact with a heated cylinder face. The web is passed, while being supported by a press fabric, through at least two separate press stages. The web is fir...
11/17/1992
5162131Method and equipment for measurement and regulation of quantity of coating
A method is provided for measuring and regulating the quantity of coating in surface sizing or pigmenting of paper or board, wherein the coating agent is spread by means of a coating device in the form of a film onto the face of a roll in a size press. Th...
11/10/1992
5159893Method and apparatus for regulation of the moisture profile of a paper or board web in a film size press
The invention concerns a method for regulation of the moisture profile of a paper or board web in a size press in which the paper or board web (W) is made to run through a nip (N) formed by the rolls (1,2) in the size press. Films (F1, F2
11/03/1992
5154799Method and device in a compact press section of a paper machine for replacement of rolls and fabrics
Method and device in a compact press section of a paper machine for replacement of press rolls and fabrics. Above the compact combination of press rolls, there is an open space between the front frame and the rear frame of the press section. By means of t...
10/13/1992
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