Abstract: A coating device for moistening a flat substrate, particularly a paper web, comprising a liquid bath which is in contact with the liquid to be applied and a coating roller which is in contact with the liquid in order to take up a quantity thereof and transfer it to the substrate. The coating roller comprises a cylinder body having at a periphery thereof a cylinder surface which is covered with an absorption layer which is able and configured to take up liquid from the liquid bath and supply it to the substrate.

Abstract: A printing material web processing machine, in particular a web-fed rotary offset press, has at least one press cylinder for printing the web, a dryer disposed downstream of the press cylinder, which guides the web along a path, and at least a first pull roll disposed downstream of the dryer to convey the web along the path with a given tensile stress. The web processing machine further has a first apparatus disposed downstream of the press cylinder and upstream of the dryer for separating the web from the press cylinder, and a second apparatus for driving the first pull roll, which drives the first pull roll at a rotational speed that is reduced as compared with the rotational speed of the press cylinder.

Abstract: A device for preparing a liquid mixture that is to be applied to a printing material is provided. The device includes a first reservoir containing a first ingredient of the liquid mixture, a supply source for a second ingredient of the liquid mixture, a mixing tank for receiving the at least first and second ingredients and for mixing the ingredients to obtain the liquid mixture, and supply lines to convey the first ingredient and the second ingredient from the first reservoir and the supply source to the mixing tank. The first ingredient includes less than 60, preferably less than 50, and most preferably less than 25 weight % of water, and in particular is an essentially waterless ingredient. A method is also provided.

Abstract: A method of cooling a material web includes, after drying a material web, moving the material web in a given direction on a meander-shaped web path over a cooling cylinder and at least one other cylinder disposed at a location selected from a group thereof consisting of a location upline and a location downline from the cooling cylinder, as viewed in the given direction of the web path, providing for the moving of the material web to be with at least partial looping thereof over the cooling cylinder and the other cylinder, and arranging the cylinders with respect to one another so as to exclude contact pressure with one another that is in effect between two respective ones of the cylinders; a device for performing the method.

Abstract: An applicator roller includes a roller jacket having an outer cylindrical surface for picking up a liquid and, at least to some extent, for transferring the liquid. The roller jacket is formed with at least one perforation through which excess liquid is guidable into a hollow interior of the applicator roller. An assembly of an applicator roller and a rotating element disposed downstream therefrom in a liquid travel direction, a cooling roller stand integrated into a dryer and having the applicator roller, a cooling roller stand disposed immediately downstream from a dryer and having the applicator roller and a printing press having the applicator roller, are also provided. A method is provided for coating a material web.

Abstract: An apparatus for remoistening a product web includes at least one applicator for applying a remoistening agent to a printed and at least partly dried product web. A device increases the temperature of the remoistening agent so that contaminants are removed by vaporization from the remoistening agent. A combination of the apparatus with a dryer and a cooling device and a method for remoistening the product web are also provided.

Abstract: A device for cooling a material web in a web-fed rotary printing machine, includes a heating device for producing waste heat for evaporative cooling of a cooling medium, and a cooling configuration through which the cooling medium is directable for web cooling. A first quantity of the cooling medium is evaporated and a second quantity is cooled by removal of heat of evaporation. A vapor generator produces vapor at least partly by the waste heat from the heating device. At least one vapor-jet vacuum nozzle is operatable by the vapor for producing a negative pressure. The cooling medium is to be subjected to negative pressure in a negative-pressure chamber for at least partial evaporation and for cooling. A dryer including the cooling device, a printing machine including the cooling device or the dryer and a cooling method are also provided.

Abstract: A printing material web processing machine, in particular a web-fed rotary offset press, has at least one press cylinder for printing the web, a dryer disposed downstream of the press cylinder, which guides the web along a path, and at least a first pull roll disposed downstream of the dryer to convey the web along the path with a given tensile stress. The web processing machine further has a first apparatus disposed downstream of the press cylinder and upstream of the dryer for separating the web from the press cylinder, and a second apparatus for driving the first pull roll, which drives the first pull roll at a rotational speed that is reduced as compared with the rotational speed of the press cylinder.

Abstract: A method of cooling a material web includes, after drying a material web, moving the material web in a given direction on a meander-shaped web path over a cooling cylinder and at least one other cylinder disposed at a location selected from a group thereof consisting of a location upline and a location downline from the cooling cylinder, as viewed in the given direction of the web path, providing for the moving of the material web to be with at least partial looping thereof over the cooling cylinder and the other cylinder, and arranging the cylinders with respect to one another so as to exclude contact pressure with one another that is in effect between two respective ones of the cylinders; a device for performing the method.

Abstract: An applicator roller includes a roller jacket having an outer cylindrical surface for picking up a liquid and, at least to some extent, for transferring the liquid. The roller jacket is formed with at least one perforation through which excess liquid is guidable into a hollow interior of the applicator roller. An assembly of an applicator roller and a rotating element disposed downstream therefrom in a liquid travel direction, a cooling roller stand integrated into a dryer and having the applicator roller, a cooling roller stand disposed immediately downstream from a dryer and having the applicator roller and a printing press having the applicator roller, are also provided. A method is provided for coating a material web.

Abstract: A device for correcting the lateral position of a printing material web (8) in a rotary press includes a correction roller (10), which is able to swivel over guide surfaces (26, 28) arranged at an angle to the web's direction of travel and roller elements (22, 24) cooperating with these, and including a web guide roller (16) arranged downstream when viewed in the web's direction of travel, over which the printing material web (8) is guided. The device (6) is characterized in that the guide surfaces (26, 28) are arranged with respect to the web's direction of travel such that the correction roller (10) moves on a substantially circular path having a radius that is large in comparison to the length of the correction roller (10) and having a center point, viewed in the web's direction of travel, which is situated in a web section (12) upstream from the correction roller (10).

Abstract: An apparatus for remoistening a product web includes at least one applicator for applying a remoistening agent to a printed and at least partly dried product web. A device increases the temperature of the remoistening agent so that contaminants are removed by vaporization from the remoistening agent. A combination of the apparatus with a dryer and a cooling device and a method for remoistening the product web are also provided.

Abstract: A device for cooling a material web in a web-fed rotary printing machine, includes a heating device for producing waste heat for evaporative cooling of a cooling medium, and a cooling configuration through which the cooling medium is directable for web cooling. A first quantity of the cooling medium is evaporated and a second quantity is cooled by removal of heat of evaporation. A vapor generator produces vapor at least partly by the waste heat from the heating device. At least one vapor-jet vacuum nozzle is operatable by the vapor for producing a negative pressure. The cooling medium is to be subjected to negative pressure in a negative-pressure chamber for at least partial evaporation and for cooling. A dryer including the cooling device, a printing machine including the cooling device or the dryer and a cooling method are also provided.

Abstract: A device for correcting the lateral position of a printing material web (8) in a rotary press includes a correction roller (10), which is able to swivel over guide surfaces (26, 28) arranged at an angle to the web's direction of travel and roller elements (22, 24) cooperating with these, and including a web guide roller (16) arranged downstream when viewed in the web's direction of travel, over which the printing material web (8) is guided. The device (6) is characterized in that the guide surfaces (26, 28) are arranged with respect to the web's direction of travel such that the correction roller (10) moves on a substantially circular path having a radius that is large in comparison to the length of the correction roller (10) and having a center point, viewed in the web's direction of travel, which is situated in a web section (12) upstream from the correction roller (10).

Abstract: A dryer for a material web having a surface to which ink is applied, including a housing subdivided into sections, through which a web travel plane extends wherein the material web is transportable, and a cooling and conditioning unit integrated in the housing, the cooling and conditioning unit having an inlet for admitting therethrough fresh air to the housing, includes at least one chill roll in the cooling and conditioning unit, over which the material web is guidable, the at least one chill roll being disposed and the fresh air being conductable through the cooling and conditioning unit in a manner for promoting post-evaporation of solvent inside the cooling and conditioning unit, and for preventing solvent vapors harmful to operating personnel from escaping to the outside from the housing; and a method of operating the dryer.

Abstract: A paired roller configuration is described and contains a first roller disposed rotatably in a first machine unit and a second roller disposed rotatably in a second machine unit and substantially parallel to the first roller. The first and second rollers guide a web that wraps partly around the first and second rollers. The first roller is disposed such that it can move in the first machine unit and, by at least one connecting unit, is connected to the second roller in such a way that in the event of movement and/or deformation of the first machine unit, the first roller and the second roller remain disposed substantially parallel to each other and at a substantially constant spacing.

Abstract: The combination of a cooling and conditioning unit for a material web to which ink is applied on at least one side thereof, having a multiplicity of chill rolls arranged in a housing at least approximately vertically above one another, utilizing the height of the housing, the material web being guidable around the chill rolls along a web path extending at least approximately vertically, and a dryer disposed upline from the cooling and conditioning unit for drying the material web, includes a material web outlet formed in the dryer, and a material web inlet formed in the cooling and conditioning unit, the cooling and conditioning unit being disposed immediately downline of the dryer in a manner that the material web leaving the dryer outlet immediately enters the inlet formed in the cooling and conditioning unit.

Abstract: A chill roller having in the interior thereof structural features selected from groups thereof consisting of mixing zones and transport pipes, and having at the exterior thereof a coolant supply pipe and a coolant discharge pipe, includes coolant supplied through the coolant supply pipe to the structural features simultaneously for forming a uniform temperature profile over the entire length of one of the chill roller and a surface of a cylinder jacket thereof; a chill roller stand having a plurality of the foregoing chill rollers; and a rotary printing press having the chill roller stand with a plurality of the chill rollers.