An apparatus for corona treatment, the apparatus including a corona treatment unit with an inlet side and an outlet side, wherein the unit includes one or more sets of transverse electrodes, at least one electrode in each set being connected to a high voltage source and at least one second electrode connected electrically to ground, wherein the second electrode connected to ground includes a rotatable roller. The apparatus is a through-flow apparatus adapted for corona treatment of material in sheets, and including at least one conveying table with a transverse direction and a longitudinal direction, where the at least one conveying table includes mechanical conveyor means. By such a solution is achieved an apparatus through which sheets of material can be conveyed and corona-treated without holding the material and pulling it through the apparatus.
B05D 3/14 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
H01T 19/00 - Devices providing for corona discharge
B29C 59/10 - Surface shaping, e.g. embossing; Apparatus therefor by electric discharge treatment
C01B 13/11 - Preparation of ozone by electric discharge
A printing roller for a printing machine, e.g., for a flexographic printing machine, wherein the printing roller includes a rotary and longitudinal axis and an external surface, the external surface being substantially cylindrical and adapted for mounting a plate. The new feature of a printing roller according to the invention is that the external cylindrical surface includes at least one longitudinal groove, where the at least one longitudinal groove includes a geometry with one or more surfaces, the surface or surfaces lying within a circumscribed cylindrical surface for the external surface of the printing roller. In other words, this means that the longitudinal groove or grooves are cutouts in the form of milled or ground grooves in the external cylindrical surface itself on a printing roller.
B41F 11/00 - Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
B41F 31/02 - Ducts, containers, supply or metering devices
B41F 23/08 - Print-finishing devices, e.g. for glossing prints
B41F 5/24 - Rotary letterpress machines for flexographic printing
A coating unit is located after a sheet-fed digital printer on a manufacturing line. As a response to a workpiece entering the coating unit from the printer, coating substance is dosed onto a plate cylinder, and said plate cylinder is rotated to transfer said coating substance onto the workpiece, which is then transferred further on the manufacturing line. As a response to a first time limit expiring after transferring the workpiece further without a subsequent workpiece entering the coating unit, the rotation of the plate cylinder is stopped.
B05C 1/02 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
B05C 13/02 - Means for manipulating or holding work, e.g. for separate articles for particular articles
B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
B41F 19/00 - Apparatus or machines for carrying out printing operations combined with other operations
B41F 33/00 - Indicating, counting, warning, control or safety devices
B05B 9/03 - Spraying apparatus for discharge of liquid or other fluent material without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
B05C 13/00 - Means for manipulating or holding work, e.g. for separate articles
B41F 35/04 - Cleaning arrangements or devices for inking rollers
B41F 21/00 - Devices for conveying sheets through printing apparatus or machines
B41F 33/06 - Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
B41F 33/12 - Tripping devices or stop-motions for starting or stopping the machine as a whole
B41F 33/08 - Tripping devices or stop-motions for starting or stopping operation of cylinders
B41F 33/16 - Programming systems for automatic control of sequence of operations
B41F 35/02 - Cleaning arrangements or devices for forme cylinders
B41F 23/08 - Print-finishing devices, e.g. for glossing prints
B05D 1/00 - Processes for applying liquids or other fluent materials
B41F 23/00 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing
4.
System and method for regulating and measuring flow
A method for regulating the flow of a viscosity-dependent liquid in a graphic process, including a pump (5) configured for pumping a viscosity-dependent liquid (3) from a first container (4) and to a graphic printing machine (1), and wherein the viscosity of the liquid (3) affects operation of the pump (5), a sensor (8) connected with the pump (5) and which is configured to measure at least one of the operational parameters of the pump (5), and a controller (9) connected with the sensor (8) and which is configured to analyze the data from the sensor (8). The controller (9) determines the viscosity of the liquid (3) from the measured operational parameters of the pump (5) and generates a control signal (17) from the measured viscosity, based on which the viscosity of the liquid (3) pumped through the pump (5) can be adjusted.
G01F 3/02 - Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
G05D 24/02 - Control of viscosity characterised by the use of electric means
F04B 9/14 - Pumps characterised by muscle-power operation
G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
G01N 11/02 - Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties by measuring flow of the material
5.
Automatic transport apparatus for package manufacturing
An apparatus comprises a stacker configured to stack planar workpieces into stacks, and a cutter configured to cut preforms out of planar workpieces. The cutter is located downstream of said stacker on a manufacturing line, and a conveyor exists between said stacker and cutter. The apparatus comprises a conveyor controller, which is configured to, after transferring a stack from said conveyor to a feeder section of said cutter; rewind the conveyor to place a foremost free location after existing stacks on the conveyor to a position where it is ready to receive a stack from said stacker.
B31B 1/00 - Box, carton, envelope or bag making machinery characterised by performing specific operations
B65G 47/26 - Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
B65G 43/00 - Control devices, e.g. for safety, warning or fault-correcting
B65G 47/28 - Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a single conveyor
B65H 31/30 - Arrangements for removing completed piles
B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
B65G 47/51 - Devices for discharging articles or materials from conveyors with distribution, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination
6.
Cleaning arrangement and method for cleaning a flexographic coating unit
A cleaning arrangement for a coater that has a plate cylinder, the cleaning arrangement having a cleaning web, a tangential moving mechanism configured to controllably move the cleaning web in at least one direction in a plane defined by the cleaning web, a radial moving mechanism configured to controllably move the cleaning web in at least one direction out of the plane, and a controller coupled to the tangential and radial moving mechanisms which is configured to control the moving of the cleaning web into and out of contact with the plate cylinder in conformity with input signals received by the controller.
B41F 23/08 - Print-finishing devices, e.g. for glossing prints
B05C 1/00 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
B05C 11/00 - Component parts, details or accessories not specifically provided for in groups
A printing unit has a doctor blade chamber, a rotatable roller, and a gasket for sealing between the doctor blade chamber and the roller. One end of the gasket has at least one sealing surface directed towards the doctor blade chamber, the gasket having a thickness which is delimited by a first edge and a second edge at the sealing surface. The other end of the gasket has an elastomeric edge for sealing abutment against the roller, the elastomeric edge being offset in a longitudinal direction of the roller relative to at least one of the first and second edges and delimits the thickness of the sealing surface. The a surface of the gasket extending between the doctor blade chamber and the roller is inclined at an angled of less than 90° relative to longitudinal axis of the roller and/or the sealing surface, and is concave and/or convex.
For sealing between a doctor blade chamber (3) and a rotatable roller (16, 23) in a printing unit, there is provided a gasket (4) having an elastomeric edge (17, 18) for sealing abutment against the roller. The gasket includes a rigid/supporting rail (7) which during operational conditions of the printing unit bears against the roller together with the elastomeric edge or which is spaced apart from the roller.
Packages are manufactured in a digitally controlled process. A digital printing machine (101) produces printed workpieces and a cutting machine (104) cuts packaging blanks (105) from them. A conveyor line (107) transfers the printed work-pieces automatically from the digital printing machine (101) to the cutting machine (104). A digital control system (109) exchanges digital control information with at least the digital printing machine (101) and the cutting machine (104).
A method for mounting and dismounting a doctor blade chamber in a support holder on a printing unit as well as an apparatus in which the doctor blade chamber is placed in the support holder in a mounting position and subsequently is brought in contact with a roller, preferably, an anilox roller, in a position of operation. The method and the apparatus advantageously have the doctor blade chamber disposed with the opening upwards in the support holder, preferably in a horizontal position or in a position at such a small angle that ink does not run out of the doctor blade chamber, and is brought into a position under the roller, after which the doctor blade chamber is brought into contact with the roller and pivoted about an axis coinciding with the rotary axis of the roller, into the position of operation.
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