Abstract: A threading device and a method for threading a tail of a web, wherein, for guiding the path of a tail separated from a full-width web in a paper machine or a paper finishing device, the threading device comprises a suction channel, placed at least partly in a paper machine portion and provided with a reduced pressure for gripping the tail, and transfer means for transferring the suction channel in the portion of the paper machine and simultaneously for releasing the tail to the portion.

Abstract: A method and apparatus for coating a paper or board web, wherein the web to be coated is brought to a film transfer coater and taken to a nip between the film transfer roll of the coater and its backing roll, and coating mix is applied onto the surface of the film transfer roll. The web is taken through the nip between the rolls and the rolls are turned, whereby the coating mix applied onto the applicator roll is at least partly transferred onto the surface of the web. The web is supported through the nip by means of a belt traveling at the same speed as the web, the belt having been arranged to travel on the backing roll. The web is taken onto the surface of the belt prior to the nip and separated from the belt after the nip, and it is pressed against the film transfer roll by means of the belt. The length of the path where the web and the film transfer roll are in contact with each other is controlled by varying the position of the web and the belt.

Abstract: A method and apparatus for coating a moving web of paper or board from on sides with at least one coat layer. The coat is applied to the web by means of a film transfer coater (12) and next the web is passed to a dryer cylinder group (4) via an air-cushion cylinder (18) supported by a wire (14), whereby the web can run fully supported all the way from its entry to the coater up to the winder. The apparatus further comprises a belt calender (8) and a belt-supported winder (9), whereby the web is thus supported over its entire passage in the machinery from the unwinder or paper machine up to winding.

Abstract: Method and apparatus for guiding a paper or board web in a paper manufacturing machine, a board manufacturing machine, or finishing units in connection with such machines. Web travel is guided by changing the travel position of at least one wire travelling in contact with the web such that the velocity vector of the wire at least at the point of contact of the web and the wire is directed sideways from the travel direction of the web center line when the web is brought onto the wire.

Abstract: Apparatus and method for coating a moving paper web, in which the web (2) to be coated is first guided to a coating station (7) correctly aligned and a first side of the web (2) is coated with a coat layer. Next, the web (2) is guided upwards from the coating station (7) and the first coat layer is dried using non-contact dryers (8, 9). From the dryers the web (2) is guided to the next coating station (14) correctly aligned, and the second side of the web (2) is coated with a coat layer, the web (2) is guided upwards from the coating station (14) and the coat layer on the second side of the web (2) is dried using non-contact dryers. When the web is directed from the coating station (7) through the dryers (8, 9), it (2) is guided non-contactingly by means of air jets such that the web (2) is first non-contactingly turned in the machine direction during drying and next, similarly during drying, towards the level of the coating stations (7, 14).

Abstract: Apparatus and method for coating a moving paper web, in which the web (2) to be coated is first guided to a coating station (7) correctly aligned and a first side of the web (2) is coated with a coat layer. Next, the web (2) is guided upwards from the coating station (7) and the first coat layer is dried using non-contact dryers (8, 9). From the dryers the web (2) is guided to the next coating station (14) correctly aligned, and the second side of the web (2) is coated with a coat layer, the web (2) is guided upwards from the coating station (14) and the coat layer on the second side of the web (2) is dried using non-contact dryers (8, 9). When the web is directed from the coating station (7) through the dryers (8, 9), it (2) is guided non-contactingly by means of air jets such that the web (2) is first non-contactingly turned in the machine direction during drying and next, similarly during drying, towards the level of the coating stations (7, 14).

Abstract: The invention concerns an arrangement of threading of a paper web (W) in a supercalender, which comprises an upper roll (12), a lower roll (13), and a stack of rolls consisting of intermediate rolls (14 . . . 23) and fitted between said upper and lower roll. The rolls (12 . . . 23) in the calender arm in nip contact (N1 . . . N11) with one another. At the sides of the stack of rolls, alternatingly at the left side and at the right side, a take-out leading roll (101 . . . 110) has been fitted at each intermediate roll (14 . . . 23). The arrangement of threading comprises at least one loop of a transfer belt (Z), which is penetrable by air and which runs outside the edge of the paper web (W) through at least two nips (N1 . . . N11) in the calender. The transfer belt (Z) passes the lead-in strip (W1) of the paper web through at least one nip (N1 . . . N11) in the calender. In addition to this, the arrangement of threading comprises at least one suction box (201 . . . 205; 210 . . .

Abstract: A method and apparatus for coating a paper or board web or the like (7) using a coating mix aerosol generated by means of an ultrasonic atomizer. The output power of a plurality of ultrasonic transducers (15) disposed proximate to a surface of the moving web (7) is passed via a vibrated beam (14) to a coating mix flow (2) flowing proximate to the web (5). Ultrasonic vibrations applied to the coating mix atomize the upper layer of the coating mix flow into an aerosol (11) which is emitted toward the web (7) and adheres thereto.

Abstract: An apparatus to facilitate tail threading of a paper web and a method of threading the tail of a paper web (1) to be coated through a coating line during startup or web break, in which an edge strip is slit from the web to act as the tail of the web which is first threaded through the line and then widened to the normal width of the web by moving the edge strip slitter. Said edge strip is first guided to a movable support element (12) located after the edge strip slitting point in the travel direction of the web (1) and the strip is supported against said movable support element (12) and is passed supported by said movable support element (12) to the next support element (14).

Abstract: A method and apparatus for coating a moving web of paper of paper-board. In the method, the web to be coated is passed to a coater station, wherein a coat layer is applied to at least one surface of the web, and the web is dried at least to some degree and passed to the next treatment step. The coat is applied by spraying the coating mix on the web surface by a high-pressure spraying nozzles, the pattern width covered by a single nozzle is essentially narrower than the cross-machine width of the web being coated.

Abstract: A method and apparatus for coating a moving paper or paperboard web (1), in which coating mix is applied to the surface of the web (1) by means of a rotating applicator roll (11). The coating mix applied to the web (1) is levelled with the help of smoothing means (4, 5, 6) acting against a backing roll (8). The web (1) to be coated is presses against the applicator roll (11) with the help of an endless band (2), which is adapted to pass over at least the applicator roll (11), the backing roll (8) and an adjustment roll (10) placed upstream of the applicator roll so that the band (2) with the web (1) backed by the band (2) are together deflected to pass over the applicator roll (11) along their path between the adjustment roll (10) and the backing roll (8).

Abstract: A method and apparatus for coating a moving web of paper or paperboard. The web to be coated is passed to a coater station, wherein a coat layer is applied to at least one surface of the web by means of high-pressure spraying nozzles, whereby the pattern width covered by a single nozzle is essentially narrower than the cross-machine width of the web being coated. The nozzles are located in an enclosure and the excess coat mist formed in the process is removed by means of suction tubes, and advantageously, with the help of a falling film of coating mix flowing down the internal wall(s) of the enclosure.

Abstract: A method for coating a paper or board web or the like (7) using a coating mix aerosol generated by means of an ultrasonic atomizer. The output power of a plurality of ultrasonic transducers (15) disposed proximate to a surface of the moving web (7) is passed via a vibrated beam (14) to a coating mix flow (2) flowing proximate to the web (5). Ultrasonic vibrations applied to the coating mix atomize the upper layer of the coating mix flow into an aerosol (11) which is emitted toward the web (7) and adheres thereto.

Abstract: An apparatus to facilitate tail threading of a paper web and a method of threading the tail of a paper web (1) to be coated through a coating line during startup or web break, in which an edge strip is slit from the web to act as the tail of the web which is first threaded through the line and then widened to the normal width of the web by moving the edge strip slitter. Said edge strip is first guided to a movable support element (12) located after the edge strip slitting point in the travel direction of the web (1) and the strip is supported against said movable support element (12) and is passed supported by said movable support element (12) to the next support element (14).

Abstract: A method and device for reeling a paper or board web, wherein a first reel spool is in a reeling position in nip-defining relationship with a reeling cylinder and an empty second reel spool is placed in a stand-by position, the web is carried on a belt until it is reeled onto the first reel spool and the belt is guided in a run over the reeling cylinder and a guide roll, the first reel spool being transferred from the reeling position and pushed by the guide roll to a change position and the second reel spool is moved to the reeling position when the reel formed on the first reel spool is complete.

Abstract: A splicing device for a continuous unwind stand for splicing a web of a new machine reel at full speed with a web of a machine reel being emptied including a frame, a first splicing roll and a second roll, the web of the machine reel being emptied running over the first and second rolls, and an elongate lever member having first and second opposed ends. The first roll is mounted at the first end and the second roll is mounted at the second end of the lever and the lever is pivotally mounted to the frame for pivoting between a first basic running position in which the first roll is spaced from the new machine reel and a second splicing position in which the first roll is in nip-defining engagement with the new machine reel and the new machine reel is spliced to the web of the machine reel being emptied. The lever pivots about an articulation point situated between a central axis of the first roll and a central axis of the second roll.

Abstract: A method and device for reeling a paper or board web in a drum reel-up or equivalent, in which, when a paper or board reel formed on a reel spool situated in a reeling position becomes complete, a new reel spool is brought by transfer members into a stand-by position and accelerated up to the web speed. The reel spool with the complete reel is transferred into an exchange position apart from the reel drum and the new, initially accelerated reel spool is transferred into the reeling position. When the reel spool with its reel is transferred into the exchange position apart from the reel drum, the belt guide roll is transferred into nip-defining relationship with the complete reel that is being formed onto the reel spool and is displaced along with the reel spool into the exchange position so that the web runs during the entire exchange on support of the belt and through a nip between the guide roll and the reel spool.

Abstract: A deflection compensated doctor blade (1) and method for coating a moving web and scraping a backing member (5). The deflection of the doctor blade is compensating by first determining the deflection of the doctor blade and then adapting appropriately selected, non-continuous forces to be exerted on the doctor blade (1) so as to achieve by these forces such deformations in the doctor blade that have an equal magnitude but an opposite direction in relation to those caused by blade loading on the doctor blade (1). This approach results in the nullification of the superimposed deflection (11). The forces are adapted to be exerted at a determined distance (RT) from the pivotal bearing points of the doctor blade (1) and at a determined distance (RV) from the pivotal axis (3) of the doctor blade.

Abstract: A paper web cut-off device, comprising a frame and a blade member mounted on the frame. The blade member is disposed to execute cutting of the paper web, with an actuator being provided for producing, on the blade member, the force required for cutting the paper web. The actuator for producing the required force for cutting of the paper web, is a spring member in which cutting energy is stored. At least one cocking or loading member is provided, which is disposed to cock or load the spring member.

Abstract: Apparatus for use in continuous web reeling apparatus for connecting a web to a winding roll as the web is being unwound from an unwinding roll by deflecting a run of the web and pressing the deflected web against joining tape provided on the surface of the winding roll. The apparatus includes a plurality of axially aligned pressing members, a fluid-actuated expandable actuating device for exerting pressure on the pressing members to cause the pressing members to move against the web to exert a joining force on the web to press the web against the joining tape provided on the surface of the winding roll, and a spring device for returning the pressing members to their original position after the web has been connected to the winding roll.