Length perforation

Length perforations are often generated with perforating wheels in rotary cutting machines. In addition to length perforations (for separating materials), corrugated perforations are also produced in some cases to create security features. The perforating wheels can be pneumatically pivoted and lifted using the blade holders. The cutting gap between the anvil cylinder and the perforating wheels can be precisely calibrated for each knife individually using an adjustment device integrated in the knife holder. This has the advantage that new and already refurbished perforating wheels can be used at the same time. Generally, the perforating wheels are driven by the material web or indirectly by the anvile cylinder. Working widths of up to 1000 mm at working speeds of up to 300 m/min are common. The anvil cylinder is usually driven by a servo motor. In addition to the perforating machines, modules and knife holders, Schobertechnologies supplies standard perforating knives from stock. Special sizes can be supplied upon request.