Metso Paper Inc.

Exel Oyj

Ilkka Eskelinen

Ilkka Rata

Heikki Toivanen

Jukka Samppala

Harri Ruotsalainen

Samppa J Salminen

Juhani Vestola

Reijo Hassinen

Antti Leinonen

Kari Niemi

Sami Kuparinen

Seppo Parviainen

Timo Pirinen

Timo S Lintula

Mika Saari

Aimo N&auml;rv&auml;inen

Kari Lamminm&auml;ki

Kari Paloniemi

Ari Närhi

Pentti Luoma

Mika H&auml;kkinen

Jouni Heiskanen

A blade, in which at least the composite base structure of the blade is manufactured in a pultrusion process by pulling fibers through at least an impregnation stage and a curing stage, the base structure is equipped with at least one wear area and the said blade is detached from a blade blank formed of a base structure and a wear area. The wear area of the blade is formed of an edge-structure part protruding outside the edge of the base structure.

Blade, structural components of a blade, and method for manufacturing a blade and the structural components of a blade

The invention concerns a method for manufacturing a blade (), in which at least the composite base structure () of the blade () is manufactured in a pultrusion process () by pulling fibers () through at least an impregnation stage () and a curing stage (), the base structure () is equipped with at least one wear area (), and the said blade () is detached from a blade blank () formed of a base structure () and a wear area (). The wear area of the blade () is formed of an edge-structure part () protruding out side the edge of the base structure (). In addition, the invention also concerns a corresponding blade and part components for manufacturing a blade according to the invention.

A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.

Doctor unit in a paper machine

Equipment and a method for changing a blade which is intended to be placed in a blade holder () and which is preferably arranged as a flexible band (). The equipment has reels () for keeping the band () reeled and transfer devices () for moving the band () in the blade holder () between the reels (). The equipment includes guide devices () for guiding the band () from a reel () to the blade holder () and vice versa. The guide devices () are arranged to turn the band () longitudinally to be essentially parallel to the blade holder (). The closest guide member () of the guide members (') belonging to the guide devices () is rotated to a position that essentially corresponds to the position of the blade holder () turned to the blade-changing position.

Equipment and method for changing a blade

A method and arrangement in doctoring in a paper or board machine is disclosed in which the web travels through at least one press nip, in which the press nip is formed by at least a press roll and its backing roll and in which at least one roll is doctored using at least one doctor device. The press roll is doctored essentially over the width of the web.

Method and arrangement in doctoring in a paper or board machine

The invention relates to an apparatus comprising a holder ( ) for a doctor blade and a blade ( ) to be fitted in the holder for use in a paper or board machine. The holder ( ) and/or the blade ( ) comprises a composite material of whose surface or on a part of whose surface a ceramic coating ( ) has been made.

Doctor blade and blade holder comprising composite material and ceramic coating

A reeling device ( ), has a support base ( ), a support arm ( ), and a shaft ( ) mounted on the support arm ( ). One shaft end has a boss ( ) and the other end has a revolving frame ( ). Mounted to the device is a transit case ( ), within which the used doctor blades ( ) of a paper/cardboard machine are reeled on a roll. Raw material is supplied to a blade production plant, where the blades are produced, then transported to a paper/cardboard plant and stored in the plant prior to being mounted in connection with paper/cardboard machine rolls, where their condition is monitored during use. Used doctor blades are removed from the machine, packed in storable form with the reeling device, and are stored in the paper/cardboard plant. The packed used blades are transported away from the paper/cardboard plant and delivered into recycling, reuse or end use.

Equipment and method in handling of doctor blades for a paper/cardboard machine

The invention relates to band-like doctor blade assembly, a doctor blade and a method in the use of the doctor blade. The doctor blade assembly includes continuous and substantially infinite doctor blade that is placed in a reel, the doctor blade is then fed into a blade holder. The blade holder includes locking devices in its connection for locking the doctor blade in the blade holder. The continuous and substantially infinite doctor blade has a plurality of edge notches formed along an edge thereof and the doctor blade is fed over a length substantially equal to the distance between the edge notches, while the notches are placed, during the operation of the doctor blade, at both ends of the blade holder and permit bending of the continuous band-like doctor blade.

Equipment and method for replacing a band-like doctor blade

The invention concerns a storage box A 0 ( ) for doctor blades employed in servicing of the face of a roll in a paper/board machine. The box is a polygon construction, in whose interior the reel (R) formed by doctor blades (t , t ) has been fitted. Through an opening ( ) in a side face of the storage box, the doctor blades (t , t , . . . ) can be discharged from the reel (R) placed inside the storage box ( ). In its interior, the storage box ( ) comprises bearing means, preferably at least one separate disk ( &prime;), which has been fitted to revolve freely on the side face of the reel (R) formed by the doctor blades.

Storage box for doctor blades employed in servicing of the face of a roll in a paper/board 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.

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Jyskä, Finland

Ilkka Eskelinen