A method and machine arrangement for sequential processing of sheet-like substrates are disclosed. At least one of a front side and a rear side of the substrates is processed in a production line one after another. A printing ink or another type of ink is applied in at least one non-impact printing device on the respective side of the substrates. The printing ink or the other type of ink is dried. A dispersion coating or a coating cured by UV radiation is then applied onto the respective side of the substrates. The dispersion coating or the coating cured by UV radiation is dried and the substrates are fed to a mechanical processing device for carrying out a further mechanical processing of the substrates. The further mechanical processing is performed by at least one of punching, inserting grooves, separating parts and by breaking out panels from their respective composite in the respective substrate.

Examples include a device for providing sheet-format substrate sections from a web-format substrate. The device includes a roll unwinder for inlet-side feeding of the web-format substrate. Two application devices act on the same first side of the web substrate, and are formed by coating units for supplying, to the same first side of the web substrate, a varnish that forms a barrier layer. A drying device is provided between a cross-cutting device and an upstream first coating unit and/or the drying device is provided in the substrate path between the two coating units and the cross-cutting device. The web-format substrate can be cut into sheet-format substrate sections and, at the outlet, the substrate sections can be provided for subsequent processing or output to a delivery unit.

Examples include a die-cutting unit that includes a device for changing a die-cutting cylinder. The die-cutting unit includes at least one die-cutting cylinder and at least one anvil cylinder. The die-cutting cylinder is arranged in a die-cutting position for die-cutting, and the at least one die-cutting cylinder is exchangeable for at least one other die-cutting cylinder by means of the device for changing the die-cutting cylinder. A shortest straight connecting line between the axis of rotation of the die-cutting cylinder in the die-cutting position and the axis of rotation of the die-cutting cylinder in the move-out position is inclined less than 30 degrees with respect to a horizontal plane. Further, a shortest straight connecting line between the axis of rotation of the die-cutting cylinder in the move-out position and a maintenance position is inclined less than 30 degrees with respect to a vertical direction.

Printing and perforating machine comprising a perforating mechanism (1) and a printing mechanism (30), the perforating mechanism (1) comprising a perforating element (2, 7) provided with piercing elements (5); and a support element (4, 8) that defines with the perforating element (2, 7) a space for the passage of a sheet material (3), forming holes on the sheet material (3) when it passes through this space. With this machine, the perforation of the sheet material is carried out during the printing process thereof, preferably a digital printing, in a synchronized way, eliminating time and handling for loading and unloading the roll of sheet material in a conventional sheet material perforating machine.

The present invention relates to a converting machine provided with an inversion transfer module (60). The converting machine comprises a printing module (16) comprising a first printing unit (17) arranged to print on a top side (S1) of a sheet (1), and a second printing unit (17) arranged to print a bottom side (S2) of the sheet. The inversion transfer module is arranged between the first printing unit and the second printing unit and comprises a first and a second inversion vacuum transfers (62, 64) which are configured to change the side of adherence and transportation of the sheet.

A device 300 for printing a succession of sheets, includes a platen press 310 for depositing colored or metalized film on each sheet by stamping between a stationary platen 320 and a movable platen 330. A heating element 340 brings a stamping tool integral with the stationary platen 320 to a given temperature for a stamping operation. The heating element 340 is displaced between an operating position between the stationary platen 320 and each stamping tool associated with that platen 320, and a maintenance position in which the heating element is outside the platen press 310.

A method of manufacturing a roll of bags includes: moving a layflat tubing from a feed end toward a produce end of a workstation; sealing the layflat tubing to form sealing lines along a width direction of the layflat tubing; punching the layflat tubing to form punching lines along the width direction; spraying, by a coding machine coupled to the workstation, at least one counting mark on the layflat tubing; cutting by the workstation, the layflat tubing along the width direction to form connected bags; and winding the connected bags into the roll of bags. The connected bags are separated by the punching lines, each bag has one of the sealing lines, and at least one bag has the at least one sprayed counting mark that counts its relative position in the roll of bags.

A device for printing a succession of sheets, includes a platen press for depositing colored or metalized film on each sheet by stamping between a stationary platen and a movable platen. A heating element brings a stamping tool integral with the stationary platen to a given temperature for a stamping operation. The heating element is displaced between an operating position, which is between the stationary platen and each stamping tool associated with that platen, and a maintenance position in which the heating element is outside the platen press.

A wetness indicating polymeric film and method of making the film is provided. The method includes feeding a polymer film into a flexographic printing apparatus; printing at least one wetness indicator ink onto a first side of the perforated polymer; and perforating the polymer film by forming a plurality of apertures or enlarged micropores that extend from the first side to the second side. The apertures or enlarged micropores permit a sufficient quantity of an aqueous liquid to pass from the second side through the perforated polymer film to the first side. Upon contact, the aqueous liquid reacts with the wetness indicator ink to cause a color change visible by an unaided human eye. In an absorbent article including the inventive film as a backsheet, the total amount of liquid that passes through the backsheet is negligible and the barrier properties of the backsheet as a whole are not compromised.

A corrugated box making machine has a vacuum transfer mechanism for moving corrugated boards along a path of conveyance including stations having printing and die cutter mechanisms which operate on the boards. The printing mechanisms include a print and impression cylinder, the latter being mounted in a vacuum housing that also holds drive rolls for moving the boards along the path during which the boards are held against the rolls by vacuum in the housing. The latter is movable substantially above the print cylinder to provide convenient access for maintenance of the print cylinder or replacement of its printing plates.