A die cutter is generally defined as a tool for making a precise cut of a “soft” sheet product (paper, cardboard, leather, textiles, rubbers, plastics,etc.).
There are three types of die-cuts: the Flat die-cut (flat wood base), the Rotary die-cut (cylinder-curved wood), and the Forged die-cut.

The flat die cutter or American die cutter is a tool consisting of a steel band with a sharp top profile that reproduces a given shape and is used in typography in papermaking and related industries to cut paper, cardboard or similar materials into complex abstract shapes.

In general, the die cutter is used to make identical and precise cuts and is, therefore, also used in other industries such as, for example, leather goods, the textile industry or label production, to make gaskets, etc.
A lower, non-cutting foil called a “bead” or “creaser” may be inserted in the same die, which causes the cardboard to be crushed and/or yielded at the appropriate location, allowing the next fold to be made at that given point. In cases of special materials or processing, the creasing blade is replaced by a blade lower than the cutting blade apt to penetrate the cardboard only for a part of its thickness (70/90%) in this case it is called “half-cutting.”

The die once produced must be inserted into a machine that alternately opens and closes as the sheet to be die-cut is inserted. Such machines can be folding-opening manual(platens), automatic(autoplatens), cylindrical plane Typographic(semiautomatic).
Depending on the type of machinery and the type of cardboard to be die-cut, hourly output ranges from 80/100 sheets/h up to 1000/1200 sheets/h. The same machines described above can have different spans and maximum cut sizes, allowing them to produce die-cuts ranging from pharmaceutical cases to packaging boxes. Following the standard cardboard production formats the paper mills, they defined measurements that in turn also determined the die-cutting sizes of these machines (50×70)(70×100)(100×140)(120×160).