Metso Paper Inc.

Valmet Technologies, Inc.

Valmet Corporation

Valmet Technologies Oy

Mika Viljanmaa

Pekka Koivukunnas

Juha Lipponen

Vilho Nissinen

Kari Holopainen

Samppa J Salminen

Kari Juppi

Reijo Pietikäinen

Erkki Leinonen

Pekka Linnonmaa

Matti Tervonen

Pekka Kivioja

Markku Kyytsönen

Heikki Kettunen

Aaron Mannio

Seppo Luomi

Hans Sundqvist

Kari Hasanen

Petri Enwald

Juha Ehrola

Juha Kivimaa

Vesa Ahvenniemi

Jari Ilomäki

Risto Sutti

Topi Tynkkynen

Markku Lyytinen

Matti Lares

Juha Laitio

Juha Isomets&auml;

Eero Suomi

Tapio Mäenpää

Richard Solin

Tapio Pitkäniemi

Heikki Vatanen

Markus Laitila

Erkki Kiiski

Tony Lehto

Pasi Kekko

Juha Pakarinen

Henri Vaittinen

Timo Nurmiainen

Jani Hakola

Hannu Vuorikari

Arttu Laitinen

Anssi Toivanen

Petri Ristola

Markus Alitalo

Ilkka Hiirsalmi

Lauri Aaltio

Maria Lepola

Jussi Jääskeläinen

Laura Savela

Arto Kumpulainen

Mikko Hakuli

Toni Tikka

Armas Gerdt

Jouni Haavisto

Robert Havukainen

Matti LEPPÄNEN

Pauli KYTÖNEN

Markku KIRVESMÄKI

Kari Martikainen

Pekka Koivukannas

Pietikäinen Reijo

Markku Kyttsönen

Nissinen Vilho

Mikko MAJAMÄKI

Sari Behm

Sampo Immonen

Antti MÄNTYNEN

Petri Lewandowski

Juha Kovanen

Tuulia MÄKELÄ

Antti RÄISÄNEN

Eveliina Karjala

Tommi Vanhala

Vesa HYPPÖNEN

Tapio PITKÄNIEMI

A method for producing a fiber web (W) in which method the fiber web (W) is calendered in at least one nip (NA) of a calender (A). The fiber web (W) is cooled at least partially by moisturizing evaporating cooling by a moisturizing evaporating cooling unit () before the fiber web is calendered and moisture is absorbed during 10-500 ms. A production line for producing fiber webs (W) has a calender (A) with a calendering nip (NA). The production line for fiber webs, in particular board webs, has a fiber web machine (), in particular a board machine, with a head box, a wire section, a press section and a drying section, and at least one moisturizing evaporating cooling module (), and a hard nip calender (A) with a thermo roll, which has a surface temperature at least 120&#xb0; C., and a reel-up ().

Method for producing fiber webs and production line for producing fiber webs

A method for modernizing a existing multiroll calender, having at least one stack of calender rolls (), each stack comprising at least two calender rolls () and at least one of the calender rolls being a smooth-surfaced press-roll (). In an existing multiroll calender the smooth-surfaced press roll () is replaced by an ultra thermo roll that is a thermo roll with a diameter substantially the same or less than the thermo roll to be replaced, so that the surface temperature of the ultra thermo roll when heated is at least 110&#xb0; C., and has at least 10&#xb0; C. higher than the surface temperature of the existing roll with the same heating fluid temperature and having flow channels arranged in such a way that vibration excitation is minimized, by being arranged to form a spiral geometry in the mantle.

Method for modernizing a multiroll calender, in particular for modernizing a supercalender and a modernized multiroll calender, in particular a modernized supercalender

An arrangement for treating a fiber web, in particular for sizing paper and board web (W), using a sizer () which has sizing equipment () located on both sides of the web (W) and size press rolls () located on both sides of the web (W) in between of which a size nip is formed. The web (W) when approaching the sizer () is first guided past the size nip of the sizer () in a process direction (D) and then is turned into an opposite direction (OD) in relation to the process direction (D) by at least one turning guide roll () such that the top side (TS) of the web (W) is sized by sizing equipment () located below the web (W).

Arrangement for treating fiber web

A device for drying and treating a fiber-based moving fiber web () in a machine intended for producing tissue paper includes a metal belt () which is arranged to support the fiber web () and to transfer the fiber web () in the machine direction and which metal belt () is arranged as a continuous rotating cycle, at least one roll () the shell of which is in contact with the metal belt () arranged to rotate around, which roll () is for supporting and/or controlling the metal belt (), and at least one counter element () arranged to create a contact area outside the metal belt () between the metal belt () and the counter element () for a process zone (), via which process zone () the fiber web () is arranged to travel when using the device.

Device for drying and treating a tissue paper web

The invention relates to a method of making surface-sized paper/board. The web to be treated in the method is after surface sizing passed to a treatment process for providing a desired drying shrinkage and/or increase of drying stresses to create thereby a desired effect on the flexural strength and/or bulk of paper/board.

Method of making surface-sized paper/board

A processing device and method applying the same for processing a coated or uncoated fibrous web is provided. The device comprises a belt configured to extend around a guiding element, at least one counter-element being disposed outside said belt to provide a contact area with the belt, such that the belt and the counter-element establish therebetween a web processing zone for passing a web to be processed therethrough. The processing zone length is defined by the disposition of the belt's guiding element and/or by the configuration of the counter-elements. The contact pressure applied to a web in the processing zone is within the range of between about 0.01 MPa and about 200 MPa.

Processing device and method of operating the device for processing a coated or uncoated fibrous web

A paper or board mill includes a drying section, which includes at least one drying cylinder group and at least one impingement drying unit (PK). The method uses a turbine engine (10), the combustion gases (1) of which are conducted at least into the impingement drying unit (PK) as impingement air.

Method and equipment for producing driving power in a paper or board mill

A method and arrangement for computing and regulating distribution of linear load in a multi-nip calender. A material web is passed through the nips in a set of rolls including a variable-crown upper roll, a variable-crown lower roll and intermediate rolls positioned between the upper and lower rolls. The rolls in the set of rolls are supported so that, when the nips are closed, the bending lines of the rolls are curved downwards. When computing and regulating the linear loads, one or more of the physical properties affecting the bending of each intermediate roll under load, such as bending rigidity, mass, shape, and material properties, are taken into account. The ratio of the linear loads applied to the intermediate rolls, the weight of the rolls per se, and/or the support forces applied to the rolls are regulated so that the set of rolls is in a state of equilibrium and a predetermined state of deflection.

Method and arrangement for computing and regulating the distribution of a linear load in a multi-nip calender and a multi-nip calender

The invention relates to a belt calender, comprising a first roll (), a second roll (), and a belt loop therebetween, comprising an incompressible metal belt () pressed by the second roll () against the first roll () to establish a calendering zone between the first roll () and said belt (). The second roll () is provided with a compressible belt section () to be pressed against the metal belt ().

Belt calender

Support and positioning means () and a cutting head () supported on them extend in the operating position of the area of the edge part (') of a paper web (). In the cutting head (), there is a support surface () and at least one nozzle (), which is set in such a way that the edge part (&#x2032;) travels between the support surface () and the nozzle (). The equipment includes mechanical cleaning means () and/or a cleaning construction () for keeping the support surfaces () clean. The cleaning means () and/or cleaning construction () are arranged on the opposite side of the paper web () to the nozzle ().

Equipment for cutting particularly a paper web with a water jet

The press device for a paper web, such as a calendar, contains a flexible moving element () forming an endless structure, said element forming the shell () of a roll, the press device including further a counter roll. Inside the moving element () there is a shoe element () that is arranged to support the shell () against the counter roll to form a nip (N). The width and/or the surface contour of the supporting surface of the shoe element () guiding the shell of the roll in the nip contact varies in the machine direction and the shoe element is positionable in the machine direction to adjust the nip width and/or length.

Method for pressing paper web and a calender or a press device with a movable shoe element

A method and apparatus in ropeless tail threading in a multi-roll calender is disclosed wherein the threading tail is guided through the multi-roll calender in such a way that, before the multi-roll calender, the threading tail is guided first of all to the broke processing and then cut when the tail threading begins. The tail threading takes place in stages, so that at least once during the tail threading the threading tail in connection with the multi-roll calender is guided to broke processing and cut, after which the tail threading is continued, once the previous stage has succeeded.

Method and apparatus in ropeless tail threading in a multi-roll calender

The invention relates to a method for adjusting the properties of the polymer coating () of a roll or a belt (), whereby the roll or the belt is used for calendering a fibrous web () in a roll nip (N), which is formed between the roll or the belt and its backing roll (), whereby the roll or the belt has a polymer coating comprising fibrous material (). In the method, the thermal elongation coefficient and/or thermal conductivity of the polymer coating () are adjusted by directing the fibre direction of the fibrous material ().

Polymer coating and a method for adjusting the properties of the polymer coating of a roll or a belt

To present invention relates to a calender for calendering a moving web of paper or board, the calender comprising a top roll () and a bottom roll () and a bottom roll (), both of the rolls being of the variable-crown type, at least one intermediate roll () of an intermediate roll stack adapted between the top roll () and the bottom roll () in a disposition allowing the superimposed rolls () of the stack to be brought into a nip contact with each other during calendering, and support means () for mounting the rolls () to the frame () of the calender or, alternatively, to guides () mounted on the frame (). Actuator means () are adapted between the mounts () of the superimposed rolls () forming the nips and/or between the bearing blocks () of the rolls so as to accomplish the relief of nip loading imposed by the weight of the intermediate rolls () and the auxiliary means connected thereto.

Calender

A roll end ( ) for a roll, in particular for a heatable roll, in a paper or board machine or in a finishing machine is made by a powder metallurgy process in a mold ( ) such that a duct system ( ) for a heat transfer medium is formed in connection with the manufacture of the roll end. A hot isostatic pressing process in particular is used in the manufacture.

Making a powder metal roll end for a heatable roll

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Helsinki, Finland

Mika Viljanmaa