摘要:
A machine for producing bags comprises a station (4) for forming a tube (2a), which forms a band (2) of transversely perforated flexible material into a tube (2a), a holding station (6) for retaining the tube (2a), a folding station (7) for forming a bottom (20) at the end of the tube (2a), a folding roller (72) comprising a folding blade (720) for folding a flap (21) at the end of the tube (2a) and a tear-off bar (722) for pinching the tube (2a) against the drum (71), the folding station (7) and the holding station (6) being configured to jointly exert a traction on the tube (2a) and detach a portion of the tube (2a). The tear-off bar (722) is disposed behind the folding blade (720), the machine controlling the rotation of the folding station (7) in order to synchronise the drum (71) with the front of the tube (2a).
摘要:
The present disclosure relates to processing a substrate including at least one sheet of paper, cardboard or carton by directing a jet stream of liquid nitrogen to a surface of the substrate via a jet nozzle; and by moving the jet nozzle at a distance from the surface. The jet stream can be unmodulated or modulated. For example, the jet stream can be modulated by a modulation unit such as to reduce the impact of the jet stream on the surface. In this way, the jet stream can be applied to score folding lines into the substrate. An unmodulated or on/off modulated jet stream can be applied to cut lines into the substrate. Thus, by applying an appropriate modulation to the jet stream, the processing can switch between cutting the substrate and scoring folding lines into the substrate.
摘要:
A transformation unit transforming a first substrate in a continuous band (2) into a second substrate in the form of transformed pieces with a predetermined length (3), the band (2) having a constant entry speed, comprises a first motorized arrangement (4) for performing a first feed driving (F) of the band (2), a sheet cutter (12) with rotary tools (13, 14) for cutting the band into pieces (3), a second motorized arrangement (17) for performing a second feed driving of the substrate (2, 3), positioned in the immediate vicinity of the sheet cutter (12), and at least one station (21, 22, 23) with rotary tools (26, 27, 28, 29, 32, 33) to transform the pieces (3). A speed of rotation (38, 41) of the second arrangement (17) varies during a rotation cycle of the tools (13, 14) of the sheet cutter (12), having a constant tangential speed phase (46) substantially equal to the speed of rotation of the tools (13, 14) of the sheet cutter (12), during which the cutting is done, a speed decrease phase (43), during which a band length (2), depending on the difference between the length of the piece (3) and a development of the tools (26, 27, 28, 29, 32, 33), is kept upstream from the second arrangement (17), and a speed increase phase (44), during which the substrate (2, 3) is discharged downstream from the second arrangement (17).
摘要:
During its production, a rigid corrugated-board web (2) is cut into corrugated-board formats (3) by at least one longitudinal severing cut (41, 42) and transverse severing cuts (51), a continuous movement of the web being maintained in the process. In addition, corner-shaping cuts (61, 62) are punched in coordination with the at least one longitudinal severing cut (41, 42) and the transverse severing cuts (51), these corner-shaping cuts removing corner material in the form of punched parts (63, 64) and producing at least one shaped edge of the corrugated-board formats (3). The corner-shaping cuts (61, 62), which, in relation to the web width, are punched one after the other in at least one width position, the at least one longitudinal severing cut (41, 42) and the transverse severing cuts (51) are made in alignment with one another. A corrugated-board making installation (1) for implementing the method comprises a corner shaping-cut punching arrangement (6), which produces punched sections in the moving corrugated-board web (2) in order to produce the corner-shaping cuts (61, 62), and synchronizing control means (75, 76) for synchronizing the production of the transverse severing cuts (51) with the production of the corner-shaping cuts (61, 62).
摘要:
A packaging material comprising a plurality of magnetisable portions thereon is disclosed, comprising at least two magnetisable portions per package to be formed from the packaging material, wherein the at least two magnetisable portions, for each package to be formed, provides each a magnetic mark carrying a magnetic field pattern such that position and orientation information related to finishing of the respective package is provided. A method for finishing packages from a web of such packaging material is also disclosed. The method comprises reading position information from the magnetic marks; cutting the web into parts to form the packages; forming the parts into an intermediate product; filling the package with content; and sealing the package, wherein the any of the cutting, forming, and sealing is performed based on position information read from the magnetic marks.