Abstract:
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.
Abstract:
A tube roll for a paper machine has a shell (10) and roll heads (11) for supporting the tube roll rotably to the paper machine. The shell (10) has two metal cylinders (12, 13) adapted coaxially at an interval of each other. Between the cylinders (12, 13) there is additionally a core construction (14) attached to both of the cylinders (12, 13). Each roll head (11) is attached to both of the cylinders, of which at least the inner cylinder (13) is made of a sheet metal material. The invention also relates to a method for manufacturing a tube roll.
Abstract:
A method and a system to control a reeling profile of a material web reel (30), when, in the forming of a material web reel (30), a web is reeled around a reeling core and when in an adjustment of CD-directional profiles of the web reel, profiling devices (8) 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 (30), which are obtained from the reel-up (2). A measuring device (40) for a measuring of a CD-directional hardness profile of the fiber web reel includes a measuring head (43), which is connected with a loading means (41, 42), which loads the measuring head against the fiber web reel. The motion course of the measuring head is linear.
Abstract:
The object of the invention is a spray coating unit (1) for treating a moving paper or board web (3) with a treating agent, the spray coating unit comprising an application chamber (P2), through which the web (3) to be treated is arranged to move, the application chamber (P2) containing an inlet port (4) for leading the web (3) into the application chamber (2) and an outlet port (5) for leading the web out of the application chamber (2), and at least one row of nozzles comprising at least one nozzle (6) for spraying the treating agent on the surface of the web (3) in the application chamber (P2). The spray coating unit according to the invention comprises spraying members (15) for spraying water mist into the application chamber (P2).
Abstract:
A papermaking machine unit has a measurement system which provides performance data. The machine supplier sells maintenance and process support services at a price determined by the level of performance of the machine within a given time period. The supplier and the customer agree on a desired performance level, and the charge to the customer is set at a fixed price plus a variable price based on performance level. The amount paid to the supplier will be greater than the fixed price if performance is greater than the desired level, and will be less than the fixed price if performance is less than the desired level.
Abstract:
In a reeler, a reeling nip is formed by a reeling core or a growing machine reel and at least one loop of an endless supporting member, which is substantially continuous in the axial direction of the reeling core. Variables proportional to the tension of the endless supporting member are measured and the tension profile of the endless supporting member is determined or the cross-directional linear load profile of the reeling nip is measured.
Abstract:
In a reel change in the reeling process of a fiber material web, the fiber material web (W) running to a reel that is becoming full is changed to run around a new reeling core (2) brought to a reel change position in such a way that the web is made to adhere onto the surface of the new reeling core (2). The web (W) is made to adhere onto the surface of the reeling core (2) by a change in the properties of the material on the surface of the reeling core (2). The material is a combination of an adhesive area (6a) on the surface of the reeling core and a protective layer (6b) on top of the adhesive area, and the properties of the material are changed by removing the protective layer (6b).
Abstract:
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 (2), a reeling core (T), around which the web (W) is reeled to form a reel (3), as well as elements for loading the reeling core (T) and the reeling element (2) against each other in order to bring about a reeling nip (N) in between the reeling element (2) and the reel (3). The reeling is monitored by a detection apparatus, which automatically detects any events differing from normal reeling.
Abstract:
A device for cutting a web with at least two cutting members for cutting/cross-cutting the web in the cross-direction and producing a cross-cut. The cutting members having a common actuator which moves the cutting members in directions apposite to each other in the cross-direction of the web.
Abstract:
The invention relates to a measuring roll for a fibre-web machine, which roll has a shell on whose surface a sensor is arranged, and which roll is coated with a coating layer proper. The roll comprises at least one protective coating layer placed under the coating layer proper and on top of the sensor in such a way that when the coating layer proper is replaced, the protective coating layer remains substantially on top of the sensor and the roll shell when the coating layer proper is removed. The invention also relates to a method for coating a measuring roll of a fibre-web machine and to a method for replacing a coating of a measuring roll of a fibre-web machine.