Method for producing wet-laid non-woven fabrics, with which an aqueous suspension comprising fibres is laid down on a screen and is dewatered using suction boxes under the screen to form a sheet of non-woven web which is removed from the screen and guided to at least one subsequent treatment unit before the non-woven web can be wound, and transferring of the non-woven web from the screen to the at least one subsequent treatment unit and/or transferring of the non-woven web to interfaces between treatment units on the start of production and/or after an interruption in production, using a web feed, wherein web is fed via a temporarily closed draw of a free draw between the screen and the at least one subsequent treatment unit and/or of a free draw at an interface between treatment units, and the respective temporarily closed draw is produced via air flows, which lift off an end feeding strip as part of the running non-woven web by blowing, adhere same to a transport path device by generating negative pressure and lift up same at the following treatment unit by suction.

Method for producing wet-laid non-woven fabrics, with which an aqueous suspension comprising fibres is laid down on a screen and is dewatered using suction boxes under the screen to form a sheet of non-woven web which is removed from the screen and guided to at least one subsequent treatment unit before the non-woven web can be wound, and transferring of the non-woven web from the screen to the at least one subsequent treatment unit and/or transferring of the non-woven web to interfaces between treatment units on the start of production and/or after an interruption in production, using a web feed, wherein web is fed via a temporarily closed draw of a free draw between the screen and the at least one subsequent treatment unit and/or of a free draw at an interface between treatment units, and the respective temporarily closed draw is produced via air flows, which lift off an end feeding strip as part of the running non-woven web by blowing, adhere same to a transport path device by generating negative pressure and lift up same at the following treatment unit by suction.

A scraper bar is used in a plant for producing a paper web with a sieve belt. The sieve belt is movable over the scraper bar transversely with respect to the longitudinal extent of the scraper bar. The scraper bar has wearing elements which face toward the sieve belt, are mounted on a supporting bar and are arranged one after the other in the direction of the longitudinal extent of the scraper bar. The supporting bar has supporting bar elements which are arranged one after the other in the longitudinal extent and which are preferably connected to one another and on which the wearing elements are fastened.

An apparatus for measuring dewatering in the wet end of a paper machine includes a measuring receptacle functioning at normal air pressure, in which receptacle the amount of the water of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter and of a measuring weir.

An apparatus for measuring dewatering in the wet end of a paper machine includes a measuring receptacle functioning at normal air pressure, in which receptacle the amount of the water of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter and of a measuring weir.

A former section including a headbox, a felt, a wire, a forming roll having a suction zone and a forming section, and a gap section defined by the section between the headbox and a position where the felt and the wire are brought together at the forming roll. The headbox distributes a pulp slurry into the gap section to be sandwiched by the felt and the wire to form a paper sheet. A bottom side of the paper sheet contacts the felt and a top side of the paper sheet contacts the wire, and the sandwiched felt, paper sheet and wire wrap around the forming roll. A press roll forms a nip with the forming roll through which the paper sheet is carried by the felt and the wire, and the suction zone of the forming roll is arranged in a section around the nip.

A former section including a headbox, a felt, a wire, a forming roll having a suction zone and a forming section, and a gap section defined by the section between the headbox and a position where the felt and the wire are brought together at the forming roll. The headbox distributes a pulp slurry into the gap section to be sandwiched by the felt and the wire to form a paper sheet. A bottom side of the paper sheet contacts the felt and a top side of the paper sheet contacts the wire, and the sandwiched felt, paper sheet and wire wrap around the forming roll. A press roll forms a nip with the forming roll through which the paper sheet is carried by the felt and the wire, and the suction zone of the forming roll is arranged in a section around the nip.

A pneumatically actuated doctoring device for paper machine de-watering/paper forming is provided having a base member supported on a papermaking machine structure, and a blade support with a fabric contact element. A single pneumatic air tube having first and second attachments on opposing sides is also provided. The first attachment engages the base member and the second attachment engages the blade support. The tube is configured for connection to a pressurized air source and a vacuum source to extend or retract the blade support. A linkage arrangement is connected between the blade support and the base member and includes first and second links located between the base member and the support member. The links each have a pivotal connection to the base member and provide for a fixed orientation of the blade support relative to the base member as the pneumatic air tube extends or retracts the blade support.

A lubricating device lubricates a circulating clothing of a machine for manufacturing a fibrous web. The device has a body with a feed chamber that has an inlet for supplying a pressurized liquid lubricant to the feed chamber and an outlet for discharging the lubricant therefrom. The body further has a nozzle chamber to which a nozzle for discharging the lubricant is connected. The nozzle has a flow-conducting connection to the feed chamber via the nozzle chamber and the outlet. Within the body, a diffuser is provided for diffusing the lubricant supplied through the outlet along the body, the diffuser being arranged between the outlet and the nozzle.

A lubricating device lubricates a circulating clothing of a machine for manufacturing a fibrous web. The device has a body with a feed chamber that has an inlet for supplying a pressurized liquid lubricant to the feed chamber and an outlet for discharging the lubricant therefrom. The body further has a nozzle chamber to which a nozzle for discharging the lubricant is connected. The nozzle has a flow-conducting connection to the feed chamber via the nozzle chamber and the outlet. Within the body, a diffuser is provided for diffusing the lubricant supplied through the outlet along the body, the diffuser being arranged between the outlet and the nozzle.