Abstract: The invention describes a machine for printing material webs (4), which comprises a station (1, 11, 41) for monitoring the printed material web (4), with the station (1, 11, 41) for monitoring the material web (4) comprising a sensor (3, 13) for monitoring the web (4) and at least one counter support (2, 12) for guiding the web (4), with at least one counter support (2, 12) being located on the side of the web (4) facing away from the sensor (3, 13). The invention is characterized by a device for providing blow air, which shows jets (6, 7) extruding blow air in the area of the station (1, 11, 41) for monitoring the material web (4) at the side of the material web (4) facing the sensor (3, 13).

Abstract: A System and method for measuring the viscosity of printing ink during the printing and ink correction process is presented.

Abstract: A System and method for measuring the viscosity of printing ink during the printing and ink correction process is presented.

Abstract: The invention relates to a web-guiding or sheet-guiding machine, in which webs or sheets are transported along a transport path (z), and which has at least one roller nip, it being possible for at least one of the rollers, which delimits the roller nip or is located downstream of the roller nip on the transport path, to be driven by an electric drive. A power controller is assigned to the electric drive, and the web-guiding or sheet-guiding machine is equipped with a safety device, which makes it possible to monitor whether foreign bodies are penetrating into the roller nip and/or whether a specified torque for the drive is being maintained. The safety device here comprises a first measuring device, which can monitor at least one first electric variable of the power made available to the drive by the power controller. The safety device comprises a second measuring device, which can measure a second physical variable having a functional relationship with the first electric variable.

Abstract: A needle roll for perforation or pickup of material pieces or webs includes a needle roll body and needles. The needles protrude beyond the outer surface of the needle roll body for perforation into the material pieces or webs. The material roll body is mounted to rotate in a machine frame. The needles are movable relative to the needle roll body.

Abstract: A blow head for production of a multilayer blown film with at least two plastic layers has melt guide areas, which are traversed in succession in the direction of flow (z) of the melt, including feed lines to at least two individual gaps for guiding an individual stream, and an annular gap for combining of the film composite. At least one thermocouple is arranged on at least one flow path of at least one individual stream before the stream reaches the annular gap.

Abstract: A method of operating a printing press includes transferring ink from an inlet point to a printing substrate, and measuring actual optical values of light, in which the actual optical values are from light of selected wavelength ranges and in which the light has interacted with at least parts of the printed image. The method includes providing a control and evaluation device with measured values from an optical measuring device and with measured values from an ink mass determination device so as to determine an optical deviation of actual optical values from optical reference values, and determining an amount of corrective ink that is to be fed to the printing press in order to approximate the actual optical values to the optical reference values.

Abstract: A bottomer for the production of sacks, preferably cross-bottom valve sacks, includes at least one glue unit that applies glue to the components of the sacks. The glue unit includes a nozzle bar, which has at least one nozzle for extruding glue onto the sack components. The glue unit also includes a counter support, which positions the sack components with a force against the nozzle bar.

Abstract: A process that is faster than conventional processes for manufacturing a film tube from a polymer and/or metal film material includes moving the film tube in relation to the joining tools during the joining process. Before the joining process of the film tube, the metal film material exists in the form of at least one film web. The edges of this film web are joined to one another in a joining process forming at least one longitudinal joint seam. During the joining process the film tube is moved in relation to the joining tools.

Abstract: An apparatus for producing bags made of tube pieces having fabric made of stretched plastic strips and with two material webs lying on top of each other includes a transport device, via which the tube pieces are conveyed in a horizontal position in a transport direction (x) extending transversely to the direction of extension (z) of the tube pieces, a bottom-opening station, via which open bottom squares are produced on at least one end of a tube piece, a closing station, via which the bottoms opened at the bottom-opening station are folded up, and a bottom-patch station, via which a bottom patch is applied for closing the bag bottom. At least one processing station on the operating side (BS) is disposed such that it is at least partly offset to a similar processing station on the drive side (AS).

Abstract: A printing machine with at least one inking unit which has at least two cylinders which are set against each other during the printing operation and can be rotated by at least one drive. The printing machine is provided with sensors for recording parameters of the rotary motion of the cylinders such as the torque and speed. A setting mechanism is provided for setting the at least two cylinders against each other in radial direction. The control unit is configured to trigger the setting mechanism to set the at least two cylinders against each other. The at least two cylinders are brought to different circumferential velocities and set against each other. The relative position of the two cylinders is recorded or maintained when at least one parameter of the rotary motion of the at least two cylinders exceeds a threshold value.

Abstract: A film blowing head (1) for the production of film tubing from a single or multi-layer film, which (1) comprises at least one extrusion gap (4) to form a film layer, which (4) is embodied between to boundary walls (5, 6), with at least one melt pipeline (22) mouthing into the extrusion gap (4), which converts inside the extrusion gap (4) into a first melt channel (4), which is formed in at least one section (11, 12, 13, 14) of the progression of at least one first melt channel (10) by recesses (3, 7) in the two boundary walls (5, 6) of the extrusion gap (4), and which distributes the melt in the extrusion gap (4), while it (10) tapers in its progression in the direction of transportation of the melt (h), and finally in its (10) end section (14) entirely converts into the extrusion gap (4). Here, it is considered novel and inventive that at least one first melt channel (10) is formed at one of its sections (11, 12, 13, 14) only by recesses (3, 7) in one of its two boundary walls (5, 6).

Abstract: A device for measuring and setting the web tension on a printing press with several inking units (Dn) has measuring means (Mm,n) for measuring the web tension and setting means (Fn) for setting the web tension, using which the web tension can be set actively in the case of unsteady web tension conditions. The measuring means (Mm,n) and the setting means (Fn) are disposed in such a manner that the web tension can be measured and set between the print areas of two inking units. A control device is provided, which controls the setting means based on the measured values of the measuring means (Mm,n).

Abstract: The invention describes a calibration device (1) for calibrating a film hose produced via a blow-extrusion film device, by which (1) the film hose can be brought into a desired diameter, with the calibration device comprising at least one film guiding element, by which the film hose can be guided. The film guiding element comprises at least one elastically deformable element.

Abstract: The invention concerns a method for the production of sacks from tubular pieces (1) which include plastic material in which at least at one end area a bottom rectangle (2) is laid around a fold line (3) to form triangular pockets (6, 7) (6, 7), where said bottom rectangle comprises flaps (4, 5) (4, 5), parts of the flaps (4, 5) (4, 5) of the bottom rectangle (2) are folded back, and a bottom cover sheet (21) is applied at least to areas of the flaps (4, 5) of the bottom rectangle (2) and/or to areas (6, 7) of the triangular pockets and connected to them. According to the invention a bottom rectangle (21) is used which includes at least in part air-permeable material.

Abstract: A blown film extrusion device includes a blow head and an outer cooling ring mountable on a top of the blow head. The cooling ring has an annular support surface on its bottom and can be centered relative to the blow head via centering devices. The centering devices are formed by at least three radially arranged linear guides, each of which has a radially extending recess and at least one guide element engaging in the recess.

Abstract: An ink chamber doctor blade for acting upon an ink transfer roll of a rotary press with a fluid, in particular with a printing ink, has an ink chamber, which is filled with ink during printing, and which extends in an axial direction of the ink transfer roll, and two doctor blades which are in physical contact with the ink transfer roll during printing and which extend in the axial direction of the ink transfer roll. At least one additional doctor blade can be inserted into the ink chamber doctor blade and can be fixed by holding devices inside the ink chamber. The holding device has at least one element, which is pretensioned by elastic force against at least one counter holder, and with which the additional doctor blade can be pressed against the counter holder.

Abstract: A device and a process are employed to prepare sheets from a film tube. The process steps include extruding the film tube, laying the film tube flat and squeezing it, reversing the film tube, and cutting the extruded film tube. The film tube is cut before the squeezing step and at least one resulting sheet runs through only one reversing device before the sheet is fed to a stationary processing device or storage device.

Abstract: A base insert device for forming crossed bases in paper bags has folding devices, which introduce folds in tubular sections from which the bags are produced, gluing stations, which apply glue to the regions of the folds for gluing and/or to sheets provided for gluing to the base, and a pressing station in which the folded bases and the sheets are brought into contact with one another and glued. Glue outlet openings in the gluing station are provided with an application head that supports valves which can selectively open and close a connection between the glue outlet openings and a glue supply unit. The glue supply unit has glue supply lines and at least one chamber through which at least one part of the valves is supplied with glue. The chamber has a diameter of at least 5 mm in at least one point.

Abstract: A blown film extrusion line has an annular die gap, from which a film tube can be extruded, a flatness unit or nip rolls, which fold the film tube, a calibration basket, which is disposed between the die gap and the flatness unit or nip rolls, and which has at least two film-guide elements that guide the film tube such that the film tube retains its round cross-section, with the diameter of the film tube being adjustable by changing the relative position of the two film-guide elements. The calibration basket includes a coupling device that couples the movement of the two film-guide elements to each other.