Metso Paper Inc.

Valmet Technologies, Inc.

Marko Tiilikainen

Petteri Lannes

Tatu Pitkänen

Matti Innala

Topi Tynkkynen

Rami Vanninen

Toni Heikkilä

Jari Tiitta

Jorma Kinnunen

Teppo Kojo

Heikki Kettunen

Petri Enwald

Tapio Mäenpää

Jussi Koskelainen

Jyrki Saloniemi

Reijo Huuskonen

John K Shakespeare

Risto Mäkinen

Vesa Riihelä

Matti M Kemppainen

Sami Lumijärvi

Petri Päivä

Petri Asikainen

Marko Rintanen

Markus Nylund

Ilkka Naatti

Raimo Pesonen

Tatu PITKÄNEN

Rami MÄKI-Tulokas

A method and an apparatus for controlling the cross-directional nip profile of a reeling nip in a reeler, in which the reeling nip is arranged by means of a reeling core or a growing machine reel and at least one loop of an endless supporting member continuous in the direction of the axis of the reeling core. To control the cross-directional nip profile of the reeling nip, variables proportional to the tension of the supporting member are measured, cross-directional tension profile of the supporting member is determined on the basis of said variables, and further, a cross-directional nip profile of the reeling nip is determined, said nip profile being controlled by adjusting the determined cross-directional tension profile of the supporting member.

Method and an apparatus for controlling a nip profile of a reeling nip

A method and a system to control a reeling profile of a material web reel (), when, in the forming of a material web reel (), a web is reeled around a reeling core and when in an adjustment of CD-directional profiles of the web reel, profiling devices () have been applied. For adjusting quality profiles and reeling profiles of the web, profiling devices are managed with the help of profile measurings of the roller nip and/or of the profile measurings of the reel (), which are obtained from the reel-up (). A measuring device () for a measuring of a CD-directional hardness profile of the fiber web reel includes a measuring head (), which is connected with a loading means (), which loads the measuring head against the fiber web reel. The motion course of the measuring head is linear.

Reeling method and system as well as an measuring apparatus

A method for measuring a nip pressure and/or a pressure profile is provided, wherein a nip-forming roll is fitted with a pressure sensor under a coating layer which is protective and functions as a spring on top of the sensor, and the nip pressure delivers to the bottom surface of the coating a deformation proportional to the nip pressure and the deformation compresses the sensor, which responds to the deformation by generating an electric signal.

On-line measurement for a pressure profile

In a method and an apparatus for controlling reeling used in connection with the making of paper/board/some equivalent web-like material, a reeler is used in the reeling which has a reeling element (), a reeling core (T), around which the web (W) is reeled to form a reel (), as well as elements for loading the reeling core (T) and the reeling element () against each other in order to bring about a reeling nip (N) in between the reeling element () and the reel (). The reeling is monitored by a detection apparatus, which automatically detects any events differing from normal reeling.

Method and apparatus for reeling control having an electromagnetic radiation detection

A method and a roll for measuring a tension profile is provided. The roll has planted on its surface a spirally helical pressure-sensitive film sensor, such as an EMFi pressure-sensitive film sensor, which makes contact with a web obliquely and which, co-directionally with the web, has a measuring range which is substantially equal to or shorter than a web overlap angle when the roll is used for measuring a lateral tension profile of the web.

Web tension profile measuring method and roll applying the same

In paper and board machines the position of a rolling device relative to another rolling device and/or the force exerted by the rolling device on the other rolling device or any variable acting on these is measured, and the value of the measured variable is compared with the set value of said variable in order to obtain the difference value of the variable, and the position of the rolling device and/or the force it exerts on the other rolling device is controlled on the basis of the difference value. The fluid pressure of the hydraulic means () and/or the flow velocity of the fluid to the hydraulic means is changed in order to alter the difference value of the variable by opening and/or closing at least one digital valve in a digital valve pack () functionally connected to the hydraulic means (S).

Method and an arrangement for controlling position and/or force of an elongated rolling device

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Kellokoski, Finland

Marko Tiilikainen