Metso Paper Inc.

Valmet Technologies, Inc.

Metso Paper Automation Oy

Metson Paper, Inc.

Reijo Hassinen

Jukka Samppala

Samppa J Salminen

Mika Saari

Kari Holopainen

Ilkka Rata

Ilkka Eskelinen

Antti Leinonen

Markku Lyytinen

Harri Ruotsalainen

Veli-Pekka Koljonen

Rami Vanninen

Hannu Eerikäinen

Leo Kurkinen

Matti Pajala

Aimo N&auml;rv&auml;inen

Kari Paloniemi

Kari Lamminm&auml;ki

Iikka Rata

Tommi Luosma

Pentti Luoma

Tuomo Pekka Auranen

Tuomas Naat&auml;nen

Tapio H&auml;rk&ouml;nen

Jukka-Pekka Alen

Jouni Heiskanen

Sami Lumijärvi

Jari Jonkka

Kari Vasenius

Jukka T Heikkinen

Hannu Nikula

Anssi Toivanen

Pekka Meriläinen

Kari-Matti Laitinen

Pekka Merilainen

Pertti Latikka

Marko Maja

Tomi Norrby

A doctor blade for a fiber web machine () includes a blade section () and a fastening detent section (). In the cross-sectional plane, the blade section () is asymmetric while the fastening detent section () is substantially symmetric so that the doctor blade () can be installed in two opposite positions for providing two different functions. The invention also relates to a doctor arrangement in a fiber web machine.

Doctor blade for a fiber web machine and doctor arrangement in a fiber web machine

In a method for detaching a web threading tail from a moving surface in a fiber web machine, the web threading tail () is detached from a moving surface () by means of air that flows from a blow-off blow channel () included in a blade holder (). A trailing blow () is directed to the web threading tail () using air that flows from a trailing blow channel () included in the blade holder (). The blade holder () includes a flow surface (), and the trailing blow () is blown to the same direction with or in a small angle relative to the flow surface (). The invention also relates to a corresponding blade holder and a doctor apparatus for detaching a web threading tail from a moving surface in a fiber web machine.

Method, a blade holder and a doctor apparatus for detaching a web threading tail from a moving surface in a fiber web machine

A doctor apparatus for a web forming machine for doctoring a moving surface with the doctor apparatus () has a blade (), a blade holder () to which the blade () is adapted, a frame component () to which the blade holder () is adapted, and a loading element () arranged between the frame component () and the blade holder () for loading the blade holder () and further the blade (). The loading element () is tied to both the frame component () and the blade holder (). The invention also relates to a blade holder () and a method for a web forming machine for doctoring a moving surface ().

Doctor apparatus and a method for a web forming machine for doctoring a moving surface as well as a blade holder

A beam structure for a web forming machine is arranged to be supported by its end components () on the web forming machine. The beam structure includes a casing structure () of a thin-sheet material, inside which a stiffener structure () is arranged. In addition, the casing structure () and the stiffener structure () are secured to each other to create a load-bearing beam structure.

Beam structure for a web forming machine

A treatment equipment, which is intended to be installed in connection with a moving surface. The treatment equipment includes a frame and a blade holder formed from composite material as a single piece and connected to the frame. In addition, a blade is fitted to the blade holder, the bevelled edge belonging to which is arranged to be brought into contact with the moving surface by moving the blade holder. In the blade holder, there is also a separate backing blade, which is fitted at one edge into the blade holder, the other edge extending closer than the blade holder to the said bevelled edge.

Treatment equipment

A multi-cylinder dryer of a paper machine, has at least one drying cylinder ( ) and at least one roll ( ) located at a different height to the cylinder and at a distance to it in the machine direction. A paper web ( ) travels from the drying cylinder ( ) to this roll ( ). Dry air is brought to the dryer through a beam ( ) located in front of the web ( ) in the machine direction, the air is directed by means of nozzles ( ) in the beam into a throat ( ) between the drying cylinder ( ) and the web ( ) mainly to intensify the drying effect. A doctor ( ) keeps the surface of the drying cylinder clean. The beam ( ) forms with the roll ( ) a smooth, high channel ( ), at least on the side of the roll ( ), for the passage of the web during a disturbance.

Arrangement in the drying section of a paper machine

The invention relates to a doctor apparatus ( ) in connection with a roll (T) in a paper or board machine. The doctor apparatus ( ) comprises a doctor beam ( ) of lightweight construction and that the doctor beam ( ) is arranged to pivot on bearing means ( . . . ) (pivot movement arrow L ). In connection with the doctor beam there are loading members ( ), a relative linear movement taking place between the loading members ( ) and backup surfaces ( &prime;) when the doctor beam ( ) is being oscillated.

Doctor equipment in connection with a roll/cylinder in a paper/board machine

The invention relates to a doctor assembly in a paper machine, which is intended to clean, e.g., a roll, and which includes a surface against which a doctor blade is set, a blade support for supporting the doctor blade, a frame, a jointed bearing assembly, which supports the doctor blade and is itself supported from the frame, and which is parallel to the doctor blade, and extends essentially over the entire width of the roll, and loading devices between the blade support and the frame for turning the doctor blade in relation to the frame and for pressing the doctor blade against the surface with a selected pressure. Due to the continuous support, there is essentially no deflection in the doctor assembly, when it is attached by its frame directly to the structures of the paper machine.

Doctor assembly in a paper machine with a jointed bearing

A steam box includes a elongated steam-distribution chamber, regulator chambers set in a row next to the elongated steam-distribution chamber and covered on one side with a continuous perforated screen. Operating devices distribute the steam from the distribution chamber to each regulator chamber. The steam box is intended to feed steam through the perforated screen to the web, to heat it according to a desired profile. The perforated screen is secured along one long edge to hinge members and along the opposite edge to locking members and is arranged to be able to be opened, to permit access to the regulator chambers.

Steam box

Growing community of inventors

Leppävesi, Finland

Reijo Hassinen