Patent ID: 8414282

Claim:
A die for producing thermoformed articles such as food packaging or parts thereof, by thermoforming a plastic sheet and providing a mechanical weakening in the plastic sheet material between adjoining functional areas of the thermoformed article, which functional areas are separable at least partly from each other at the mechanical weakening when utilized by a user, the die comprising: an upper die, a lower die and at least one perforating or stamping element with a perforating or stamping cutting edge, which is disposed in the upper die or the lower die, the upper die and the lower die being movable against each other, wherein the perforating or stamping cutting edge comprises: at least two first sections which are staggered relative to each other in the direction of movement of the die and extend vertically to it and each of the two first sections forms a section of the mechanical weakening, and at least one second section that is formed at an angle α other than 90° to the direction of movement of the die and forms a section of the mechanical weakening.