Abstract: Support and positioning means (10) and a cutting head (13) supported on them extend in the operating position of the area of the edge part (14?) of a paper web (14). In the cutting head (13), there is a support surface (16) and at least one nozzle (17), which is set in such a way that the edge part (14?) travels between the support surface (16) and the nozzle (15). The equipment includes mechanical cleaning means (20) and/or a cleaning construction (21) for keeping the support surfaces (16) clean. The cleaning means (20) and/or cleaning construction (21) are arranged on the opposite side of the paper web (14) to the nozzle (17).

Abstract: The press device for a paper web, such as a calendar, contains a flexible moving element (1a) forming an endless structure, said element forming the shell (1) of a roll, the press device including further a counter roll. Inside the moving element (1a) there is a shoe element (3) that is arranged to support the shell (1a) against the counter roll to form a nip (N). The width and/or the surface contour of the supporting surface of the shoe element (3) 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.

Abstract: 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 (G1) of which are conducted at least into the impingement drying unit (PK) as impingement air.

Abstract: 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.

Abstract: The invention relates to a method for adjusting the properties of the polymer coating (2) of a roll or a belt (3), whereby the roll or the belt is used for calendering a fibrous web (4) in a roll nip (N), which is formed between the roll or the belt and its backing roll (5), whereby the roll or the belt has a polymer coating comprising fibrous material (1). In the method, the thermal elongation coefficient and/or thermal conductivity of the polymer coating (2) are adjusted by directing the fibre direction of the fibrous material (1).

Abstract: To present invention relates to a calender for calendering a moving web of paper or board, the calender comprising a top roll (1) and a bottom roll (1) and a bottom roll (2), both of the rolls being of the variable-crown type, at least one intermediate roll (3) of an intermediate roll stack adapted between the top roll (1) and the bottom roll (2) in a disposition allowing the superimposed rolls (1, 2, 3) of the stack to be brought into a nip contact with each other during calendering, and support means (4, 5) for mounting the rolls (1, 2, 3) to the frame (6) of the calender or, alternatively, to guides (7) mounted on the frame (6). Actuator means (9, 19) are adapted between the mounts (5) of the superimposed rolls (1, 2, 3) forming the nips and/or between the bearing blocks (4) of the rolls so as to accomplish the relief of nip loading imposed by the weight of the intermediate rolls (3) and the auxiliary means connected thereto.

Abstract: The object of the invention is a thermoroll for a paper/board machine or a finishing machine, the said thermoroll comprising a shell (2; 4, 5) of metallic, ceramic or composite material, the shell incorporating ducts (3; 9) for passing a heating medium from one axial end of the shell to its opposite end. The shell is made by means of casting or powder metallurgical methods, and the ducts (3; 9) are formed in the matrix material of the shell which is of metal and/or ceramic, directly in connection with manufacture. A further object of the invention is a method for manufacturing a thermoroll.

Abstract: A roll end (30) 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 (20) such that a duct system (10) 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.

Abstract: The invention relates to a method for adjusting the properties of the polymer coating (2) of a roll or a belt (3), whereby the roll or the belt is used for calendering a fibrous web (4) in a roll nip (N), which is formed between the roll or the belt and its backing roll (5), whereby the roll or the belt has a polymer coating comprising fibrous material (1). In the method, the thermal elongation coefficient and/or thermal conductivity of the polymer coating (2) are adjusted by directing the fibre direction of the fibrous material (1).

Abstract: The invention relates to a calender intended to calender a paper or board web (4), which calander comprising a calendering section, in which there are at least two members, such as rolls (1, 2, 3), in nip contact, between which the web (4) being calendered is arranged to run. For reducing the moisture and heat leaving the web (4) while it is being calendered a wall (16, 17), covering at least part of the calendering section, is formed from the web (4) being calendered by changing its direction of travel.

Abstract: A thermoroll for a paper/board machine or a finishing machine, the thermoroll having a shell of metallic, ceramic or composite material, and the shell having ducts for passing a heating medium from one axial end of the thermoroll to the other axial end of the thermoroll. The shell is made by casting or by powder metallurgical methods, and the ducts are formed in the matrix material of the shell which is metal and/or ceramic.

Abstract: The invention relates to a belt calender, comprising a first roll (11), a second roll (13; 15), and a belt loop therebetween, comprising an incompressible metal belt (12) pressed by the second roll (13; 15) against the first roll (11) to establish a calendering zone between the first roll (11) and said belt (12). The second roll (13; 15) is provided with a compressible belt section (14; 18) to be pressed against the metal belt (12).

Abstract: The invention relates to a safety device (SD) to be used in connection with machines and devices in the production or finishing line of paper and/or paperboard as well as in connection with devices utilized for production of pulp used in the manufacture of paper and/or paperboard. According to the invention the safety device (SD) comprises a reeling core (RC) and a safety structure (SW) reeled around said reeling core (RC). In a preferred embodiment of the invention the reelable safety device (SD) is composed of separate, substantially rigid lamellae (L) that are attached to each other in an articulated manner. As a result of the reelable structure, the safety device (SD) can be easily reeled away from the working area during maintenance and repair and thereafter it can be easily and rapidly reeled back into its place.

Abstract: Support and positioning means (10) and a cutting head (13) supported on them extend in the operating position of the area of the edge part (14′) of a paper web (14). In the cutting head (13), there is a support surface (16) and at least one nozzle (17), which is set in such a way that the edge part (14′) travels between the support surface (16) and the nozzle (15). The equipment includes mechanical cleaning means (20) and/or a cleaning construction (21) for keeping the support surfaces (16) clean. The cleaning means (20) and/or cleaning construction (21) are arranged on the opposite side of the paper web (14) to the nozzle (17).

Abstract: 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.

Abstract: A thermoroll for a paper/board machine or a finishing machine, the thermoroll having a shell of metallic, ceramic or composite material, and the shell having ducts for passing a heating medium from one axial end of the thermoroll to the other axial end of the thermoroll. The shell is made by casting or by powder metallurgical methods, and the ducts are formed in the matrix material of the shell which is metal and/or ceramic.

Abstract: A paper or board web is manufactured in an on-line manufacturing process, in which the web is passed from a paper or board machine (15) directly to a finishing device/finishing devices (60, 50, 10). The state of the finishing device/finishing devices (60, 50, 10) is monitored and, during a shutdown of a finishing device (60; 50; 10), said finishing device is bypassed, the web coming from the paper or board machine (15) is wound into machine reels and/or treated by means of some finishing device/finishing devices and wound into machine reels. A paper or board machine forms an on-line manufacturing process together with a finishing device/finishing devices.

Abstract: The invention relates to a method and arrangement for processing a wide paper or board web in connection with such a manufacturing method, in which a wide base web (14) is manufactured and the base web is processed in at least one processing stage before the separation of the finished product by cutting it transversely from the web on the production line. According to the invention, the base web (14) is divided at least once to form two part-webs (17, 18) before the separation of the finished product by cutting it transversely from the web and before the final processing stage preceding separation. At least one part-web (17, 18) formed in this manner is guided to a finishing stage before the separation of the finished product by cutting it transversely from the web on the production line.

Abstract: The invention relates to a calender intended to calender a paper or board web (4), which calander comprising a calendering section, in which there are at least two members, such as rolls (1, 2, 3), in nip contact, between which the web (4) being calendered is arranged to run. For reducing the moisture and heat leaving the web (4) while it is being calendered a wall (16, 17), covering at least part of the calendering section, is formed from the web (4) being calendered by changing its direction of travel.

Abstract: The press device for a paper web, such as a calendar, contains a flexible moving element (1a) forming an endless structure, said element forming the shell (1) of a roll, the press device including further a counter roll. Inside the moving element (1a) there is a shoe element (3) that is arranged to support the shell (1a) against the counter roll to form a nip (N). The width and/or the surface contour of the supporting surface of the shoe element (3) 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.