A method of identifying a defect in a wet film comprises conveying said wet film (20), in a wet state, on a conveyor (10), providing a laser projection (1511) onto the wet film, acquiring a series of images, each depicting an area of the wet film, wherein at least a portion of the laser projection is visible, and using at least some of said images to identify said defect. There is also disclosed a method and device for producing a film.

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 sheet manufacturing method includes: a defibrating step of defibrating a raw material containing a fiber in air; a mixing step of mixing a defibrated material defibrated in the defibrating step and a resin in air; a web forming step of forming a web by accumulating the mixture mixed in the mixing step on a moving body; a transporting step of transporting the web; a sheet forming step of forming a sheet from the web; a setting step of setting a thickness of the sheet; and a control step of controlling a moving speed of the moving body and a transporting speed of the web in the transporting step, in accordance with the thickness of the sheet set in the setting step.

A separation device includes: a material supply section that supplies a material containing a fiber; a defibrating section that defibrates the material supplied from the material supply section; a separation section that includes a rotating member, a suction portion, and a collection section, the rotating member having a first surface and a second surface that are in a front and back relationship, being at least partially composed of a mesh, and to which a defibrated material generated in the defibrating section is supplied onto the first surface, the suction portion being provided on a side of the second surface of the rotating member and sucking the defibrated material via the mesh to remove foreign matter, the collection section collecting the defibrated material from which the foreign matter on the first surface has been removed; a weight detection section that detects a weight of the material supplied by the material supply section; and a controller that controls an operation of the separation section based on a detection result of the weight detection section.

A fiber body manufacturing apparatus includes: a material supply section that supplies a material containing a fiber; a defibrating section that defibrates the material supplied from the material supply section; a separation section that includes a rotating member, a suction portion, and a collection section, the rotating member having a first surface and a second surface that are in a front and back relationship, being at least partially composed of a mesh, and to which a defibrated material generated in the defibrating section is supplied onto the first surface, the suction portion being provided on a side of the second surface of the rotating member and sucking the defibrated material via the mesh to remove foreign matter, the collection section collecting the defibrated material from which the foreign matter on the first surface has been removed; an accumulation section that accumulates the defibrated material from which the foreign matter has been removed; a forming section that forms an accumulated material generated in the accumulation section; a thickness detection section that detects a thickness of a sheet formed by the forming section; and a controller that controls an operation of the separation section based on a detection result of the thickness detection section.

An air nozzle apparatus that includes an air orifice and a nozzle housing, said nozzle housing configured as u-shaped having a first elongated sidewall, a second elongated sidewall, and a third curved sidewall formed continuous with said first elongated sidewall and said second elongated sidewall to form a channel having an open end opposite said third curved sidewall, said air orifice positioned centered in said channel and proximate a base of said third sidewall facing said open end, wherein said first elongated sidewall, said second elongated sidewall, and said third curved sidewall are configured having an arched top surface, and, thus, functions to optimize the Coanda effect to position and convey the paper web through an air threading chute to thread a paper web from the end of the drying step through the dry-end to the paper winding step.

An apparatus for transporting a tail end in a fiber web machine from one structural section to another includes nozzles for guiding the tail end on the guide plate by means of an air flow such that the blown air is brought onto a guide plate shaped into a curve in such a way that the air flow of the blown air guides the tail end onto the curved guide plate by means of a bump functioning as an aerodynamic profile formed in the curved guide plate.

An LED matrix lighting device for illuminating a lighting pattern with even intensity. The LED matrix lighting device includes a plurality of LEDs, a collimating lens in front of each LED for collimating light of the LED, and a light refracting element in front of collimating lenses arranged to refract light of at least a first part of the LEDs with a different refraction angle than at least a second part of the LEDs. The disclosure further relates to a machine vision system, a method, and a computer program product.

The present disclosure relates to a system for pulp processing and resupply of production-quality pulp to at least one fiber molding system, where the system is constructed in scalable modular form. For this, the system includes at least one supply module (110) and one or more process modules (120). The supply module (110) and the process modules (120) are equipped with a plurality of interfaces (150), matched to one another in each case, in order to connect supply and process modules (110, 120) to one another. This may guarantee the infrastructure supply of the process modules (120). The pulp or the constituents and starting materials may be received via at least one inlet (130) and transported between the process modules (120) to provide the production-quality pulp (160) via an outlet (140) for use by at least one fiber molding system.

A calender includes a rotatable roller, and a belt co-acting with the roller with a determined belt pressure. At least one material for feeding through the calender is situated between the roller and the belt for a determined contact time during throughfeed through the calender. The calender also includes means for heating the fluid and/or the roller, control means for controlling the heating means and/or the belt pressure and/or the contact time, and at least one first temperature sensor for measuring the temperature of an outer periphery of the roller and at least one second temperature sensor for measuring the temperature of the fluid. The control means are configured to control the heating means and/or the belt pressure and/or the contact time on the basis of the measured outer periphery temperature and the measured fluid temperature. A set with a plurality of such calenders and a method for controlling such a calender.