A nozzle (10) for contact-free treatment of a running web, having a main frame (11) forming an outer part of the nozzle, and two side chambers (14, 15) on each of the longitudinal sides of the nozzle (10). The side chambers having openings (17A, 17B, 16A, 16B) for the air to blow toward a fiber web. A U-shaped air channel (20), through which the air is lead to the side chambers (14, 15), located between the side chambers (14, 15), having at least one opening (19, 18) on each side wall for leading the air into the side chambers (14, 15). A U-shaped inner part (13) which is movable by a mechanism (12) comprising a screw (21) and bushings (22) to at least partially open and close the opening (18, 19).

The invention relates to a method and a device for arranging sheets in an overlapping position in a transfer unit arranged between a first processing station and a second processing station following the first processing station in a transport direction of the sheets. The sheets to be overlapped are transported from the first processing station to the transfer unit, in a transport plane and each individually lying behind one another. A respective rear, in the transport direction, edge of the sheets coming from the first processing station, is raised relative to the transport plane exclusively by the use of blown air, and a second subsequent sheet is slid under the rear edge of the respective preceding first sheet.

A web transport system for transporting a web of media along a web transport path in an in-track direction, including a liquid application system for applying a liquid to at least one surface of the web of media. An air skive is positioned along the web transport path downstream of the liquid application system, wherein the air skive directs one or more streams of air onto the web of media thereby removing at least some of the liquid that is being carried along with the web of media. A vapor source adds a vapor into the one or more streams of air provided by the air skive before the one or more streams of air are directed onto the web of media.

A non-contact web guide includes a wall having a curved exterior surface and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position, second and third rows of liquid ejection holes is provided in proximity to the web guide exit position, and an intermediate array of liquid ejection holes is provided between the first and second rows. A total number of liquid ejection holes in the intermediate array is less than a total number of liquid ejection holes in the second row. This configuration of ejection boles provides the advantage that stable web guidance is achieved at low liquid flow rates.

A pouch magazine that comprises a rack to accommodate a stack of empty pouches and a pouch pick up area having a positioning stopper, the magazine having a pouch separating means configured to separate the first pouch from the stack enabling sending it to the pouch pick up area, wherein the pouch magazine is equipped with a pouch conveyor to convey the separated pouch of the stack up to the positioning stopper of the pick up area, the said pouch conveyor having means for supplying a stream of pressurized fluid upon which the conveyed separated pouch lies, said means for supplying a stream being configured to applying sufficient Coanda effect forces to said stream to propel the separated pouch to the pick up area and to maintain the separated pouch against the positioning stopper of the pick up area.

A non-contact web guide includes a wall having a curved exterior surface and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position having axes that are inclined toward a downstream direction, and a second row of liquid ejection holes is provided in proximity to the web guide exit position having axes that are inclined toward an upstream direction. An intermediate array of liquid ejection holes is optionally provided. The pressurized liquid flows through the liquid ejection holes to force the web of media away from the bearing surface of the web guide. This configuration of liquid ejection holes provides the advantage that stable web guidance is achieved at low liquid flow rates.

Discloses is an apparatus and method for utilizing air along a building board forming line for the purpose of reducing friction between the board and the underlying forming tables. The device employs a series of air nozzles that are formed within the face of the forming tables. An air source delivers pressurized air to the nozzles. As completed or partially completed boards travel along the forming tables, an air cushion is created to reduce the friction between the board and the underlying table. The pressurized air can also be used to transport the boards and promote the even distribution of slurry during formation. The various components of the present invention, and the manner in which they interrelate, are described in greater detail hereinafter.

A web transport system for transporting a web of media along a web transport path in an in-track direction, including at least one non-contact web guide. The web guide includes a wall having a curved exterior surface, wherein the web of media travels around a bearing portion of the curved exterior surface from a web guide entry position to a web guide exit position, and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position having axes that are inclined toward a downstream direction, and a second row of liquid ejection holes is provided in proximity to the web guide exit position having axes that are inclined toward an upstream direction. The pressurized liquid flows through the liquid ejection holes to force the web of media away from the bearing surface of the web guide.

A web transport system for transporting a web of media along a web transport path in an in-track direction, including at least one non-contact web guide. The web guide includes a wall having a curved exterior surface, wherein the web of media travels around a bearing portion of the curved exterior surface from a web guide entry position to a web guide exit position, and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position, a second row of liquid ejection holes is provided in proximity to the web guide exit position, and an intermediate array of liquid ejection holes is provided between the first and second rows. A total number of liquid ejection holes in the intermediate array is less than a total number of liquid ejection holes in the second row.

The invention relates to a roller for producing a fibrous web, in particular a paper web including a rotationally symmetrical base body which is rotatable about a longitudinal axis and has a shell surface on which there are arranged at least two elastically deformable and/or deflectable ring-shaped lamellas which extend away from the shell surface in the radial direction and which surround the base body in the circumferential direction, wherein the lamellas are arranged at least in sections at an angle relative to a center plane of the roller aligned perpendicular to the longitudinal axis of the roller, thus forming an angle of inclination.