Longitudinal cutting machine with a cooled cutter blade

A longitudinal cutting machine for cutting a sheet of material conveyed through the cutting machine, comprising:

• a cutter arrangement, which is provided with at least an upper cutter, for said sheet of material, which is conveyed through said cutter arrangement across a cutting point formed by said upper cutter);
• and
• at least one nozzle for conveying a cooling medium onto a cutter blade of said upper cutter, wherein said at least one nozzle extends or is distributed over a periphery or length of said cutter blade.

The use of a longitudinal cutting machine for cutting a sheet of temperature sensitive material conveyed through the cutting machine, wherein said cutting machine comprises a cutter arrangement, which is provided with at least an upper cutter, and optionally a lower cutter, for said sheet of material, which is conveyed through said cutter arrangement across a cutting point formed by said upper cutter, and wherein said cutting machine has an electrical cooling means for cooling at least one of said upper cutter and said lower cutter, including the step of:

• cooling with said electrical cooling means to prevent a temperature of a cutter blade of said cutter from exceeding a prescribed temperature during a cutting operation of said longitudinal cutting machine.