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 feeding station for a splicer of a rotary offset printing press is provided. The feeding station includes a feeding device for feeding a paper roll into a splicer; an unpack station for unpacking a paper roll; and a buffer station for storing an unpacked paper roll. The feeding station includes an unpack conveyor leading from the unpack station to the feeding device; and a buffer conveyor leading from the buffer station to the feeding device. The feeding device includes a feeding carriage having a core container for holding two or more cores. A corresponding method is also provided.

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 device for applying a paper web onto a paper reel is provided, including a web application roller mobile between a guiding position of the paper web and an application position of the paper web onto the paper reel, and an actuator for moving the web application roller between its two positions. The device includes a locking mechanism adapted for locking the web application roller in its application position. The device may be used in reel changers of web-fed offset printing presses.

Abstract: This device for applying a moistening liquid to a paper web comprises a liquid applicator roller (44, 46) for applying the moistening liquid (38) on the paper web (18). The liquid applicator roller comprises an application surface (60), and is characterized in that the application surface (60) is formed of a material capable of creating a corona effect on the paper web by discharge of static electricity between the surface and the paper web (18). Application to paper web dryers of rotary offset presses.

Abstract: A printing press is provided. The printing press includes at least one printing unit for printing a web-shaped printing material and a device for applying a liquid mixture of a silicone oil concentrate and at least water to the web-shaped printing material. The device includes reservoir for the silicone oil concentrate, a supply source for the water, a mixing tank for the silicone oil concentrate and the water, an applicator for transferring the liquid mixture onto the printing material. The applicator has at least one container for the liquid mixture. The device also includes a buffer tank for the silicone oil concentrate separate from the mixing tank. The buffer tank receives the silicone oil concentrate from the reservoir. The printing press also includes a cooling roll for the web-shaped printing material.

Abstract: A feeding station for a splicer of a rotary offset printing press is provided. The feeding station includes a feeding device for feeding a paper roll into a splicer; an unpack station for unpacking a paper roll; and a buffer station for storing an unpacked paper roll. The feeding station includes an unpack conveyor leading from the unpack station to the feeding device; and a buffer conveyor leading from the buffer station to the feeding device. The feeding device includes a feeding carriage having a core container for holding two or more cores. A corresponding method is also provided.

Abstract: A device for applying a paper web onto a paper reel is provided, including a web application roller mobile between a guiding position of the paper web and an application position of the paper web onto the paper reel, and an actuator for moving the web application roller between its two positions. The device includes a locking mechanism adapted for locking the web application roller in its application position. The device may be used in reel changers of web-fed offset printing presses.

Abstract: A web-fed rotary press (10) for printing on a web substrate (12) using heat-set inks in an offset printing process, having at least one print unit (14) and one dryer (16), and at least one additional device (18) for inputting heat into the web substrate (12) which is positioned upstream from the print unit (14), in particular. Fluting in the web-fed rotary press (10) may be minimized by supplying heat to the web substrate (12) at least at one location along the path (36) through the web-fed rotary press (10), in particular before the printing operation.

Abstract: A printing press is provided. The printing press includes at least one printing unit for printing a web-shaped printing material and a device for applying a liquid mixture of a silicone oil concentrate and at least water to the web-shaped printing material. The device includes reservoir for the silicone oil concentrate, a supply source for the water, a mixing tank for the silicone oil concentrate and the water, an applicator for transferring the liquid mixture onto the printing material. The applicator has at least one container for the liquid mixture. The device also includes a buffer tank for the silicone oil concentrate separate from the mixing tank. The buffer tank receives the silicone oil concentrate from the reservoir. The printing press also includes a cooling roll for the web-shaped printing material.

Abstract: A flap projecting from a glue joint between two paper strips after an on-the-fly supply roll change is shortened by continuously displacing the strips in a straight line, in a travel direction, and at a travel speed along a path such that the flap lies flatly against an outer face of the strips and engaging at least a part of a separating device against the outer face in the path. At least the part of the separating device engaging the strip is displaced in the travel direction at a speed greater than the travel speed such that, when the separating device engages the flap, the flap is bowed out away from the outer face downstream of the separating device. A blade is juxtaposed with the outer face of the strip immediately downstream of the separating device such that the bowed out flap engages and is cut by the blade.

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.