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US 11,524,422 B2Granted
Method of operating a flat-bed die cutter
AssigneeHeidelberger Druckmaschinen AG
InventorWerner Schwab
Life of this patent
Estimating the term…
Abstract
In a method of operating a flat-bed die-cutter a printing substrate in the form of a web is fed to a die-cutting module of the flat-bed die-cutter, a web section is severed from the web and removed as waste. The web is guided through the die-cutting module and the web section is severed from the web in or downstream of the die-cutting module and removed as waste. Products are thus formed by die-cutting a web while reducing waste and periods of standstill.
Claims5
A method of operating a flat-bed die-cutter, the method comprising:
- feeding a printing substrate in the form of a web to a die-cutting module of the flat-bed die-cutter and guiding the web through the die-cutting module;
- severing a web section from the web downstream of the die-cutting module by either,
- cutting the web section off by a cross-cutter that rotates or moves up and down and is different from a die-cutting knife of the die-cutting module;
- or
- only partly cutting the web section off by a cross-cutter that rotates or moves up and down and is different from the die-cutting knife of the die-cutting module and then tearing off the web section;
- and
- removing the web section as waste by at least one of winding the waste onto a winding roller, depositing web sections into a waste delivery or shredding the web sections;
- operating the die-cutting module, during or after removing the web section, in-register at a matching speed relative to the speed of a printed image of a print on the web;
- and
- starting the feeding of the web to the flat-bed die-cutter and guiding of the web through the die-cutting module at a beginning of a production run, continuing the feeding and guiding without interruption during the removal of the web section and the in-register die-cutting of the web at the matching speed, and not stopping the feeding and guiding until production ends.
7 more elements
Dependencies are inferred from the claim text.