A high-speed digital printing system includes two unwinding machines for two input coils for a paper web, an input unwinding and splicing installation and a printing station and in which the input installation supplies, in turn, the printing station with the web of the two coils. The system also includes a splicing and rewinding installation with an output cutting and splicing equipment for an incoming web emerging from the printing station and two rewinding machines with two output coils. The output equipment feeds alternatively the rewinding machines with the incoming web by cutting and splicing of a web of the two output coils without stopping printing. An electronic controller switches the functionality of the output cutting and splicing equipment and of the rewinding machines with setting of the output coils as an operating coil and a waiting coil and, viceversa, as a waiting coil and an operating coil.

A high-speed digital printing system includes two unwinding machines for two input coils for a paper web, an input unwinding and splicing installation and a printing station and in which the input installation supplies, in turn, the printing station with the web of the two coils. The system also includes a splicing and rewinding installation with an output cutting and splicing equipment for an incoming web emerging from the printing station and two rewinding machines with two output coils. The output equipment feeds alternatively the rewinding machines with the incoming web by cutting and splicing of a web of the two output coils without stopping printing. An electronic controller switches the functionality of the output cutting and splicing equipment and of the rewinding machines with setting of the output coils as an operating coil and a waiting coil and, viceversa, as a waiting coil and an operating coil.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

The present disclosure relates to a method for splicing a web of packaging material, comprising: guiding the web of packaging material through a splicing device comprising one or more imaging devices, a slitter, and a sealing unit; acquiring a first set of images of one or more areas of the packaging material, storing the acquired first set of images, slitting the web of packaging material in one or more locations to form a tail end and a head end of a web of packaging material, aligning the head end and the tail end and superimpose one on the other in preparation for forming a splice, utilizing the imaging devices and the stored acquired first set of images to fine tune the alignment of the head end and the tail end, sealing the splice.

The method relates to tape connecting device (1) and a method for connecting a first tape to a second tape for providing a tape string. In the tape connecting device (1) when continuously conveying the first tape an end section of the first tape is connected to a start section of the second tape by an adhesive connection by a liquid (in particular water) arranged in a connecting section. Furthermore, the invention relates to a method for connecting two tapes, a processing system and a use of a method.

The inventive tape connecting device (1) and the method can in particular be used for a continuous provision of a security tape for a security document as a banknote.

The method relates to tape connecting device (1) and a method for connecting a first tape to a second tape for providing a tape string. In the tape connecting device (1) when continuously conveying the first tape an end section of the first tape is connected to a start section of the second tape by an adhesive connection by a liquid (in particular water) arranged in a connecting section. Furthermore, the invention relates to a method for connecting two tapes, a processing system and a use of a method.

The inventive tape connecting device (1) and the method can in particular be used for a continuous provision of a security tape for a security document as a banknote.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

A method for splicing a web of packaging material is provided. The method involves guiding a first web of packaging material through an automatic splicing device, determining the position of at least one mark of the first web of packaging material by a detector, moving the first web of packaging material based on the position of the at least one mark of the first web of packaging material such that a specific area of the first web of packaging material is arranged in proximity to a cutting unit, and cutting the first web of packaging material in order to form a separate leading part of the first web of packaging material. The method may also involve introducing a new leading part of a second web of packaging material into the automatic splicing device, determining the position of at least one mark of the second web of packaging material, moving the second web of packaging material based on the position of the at least one mark of the second web of packaging material such that a specific area of the second web of packaging material is arranged in proximity to a sealing arm of the cutting unit, and sealing the separate leading part of the first web of packaging material and the second web of packaging material.