Punch form and method of die-cutting with it

Details Punch form and method of die-cutting with it Punch form and method of die-cutting with it

B - Operations, Transporting

26

F

B26F 1/00 (2006.01) B26D 7/02 (2006.01) B26D 7/18 (2006.01) B26F 1/40 (2006.01) B31B 1/14 (2006.01)

Patent

CA 2471323

The invention concerns a punch form for die-cutting of packaging material (5), comprising cutting knives (2) and/or scoring rules, the punch form (1) is at least partly dressed with sheet material (4) which is arranged in the punch form (1) so that crack reducing of the packaging material (5) is achieved at lease in connection to the cutting knives (2) and/or scoring rules. The friction and the adhesion between the sheet material (4) and the packaging material (5) is so low that a relative sliding can occur between the sheet material (4) and the packaging material (5) during the die-cutting course, which includes a combined ejecting and cleaning course.

Selon l'invention, une forme à poinçonner, destinée au découpage à la presse d'un matériau de conditionnement (5), comprend des couteaux (2) et/ou des filets traçants, et est au moins partiellement habillée d'un matériau de protection (4) disposé dans la forme à poinçonner (1), de sorte que la réduction des fissures du matériau de conditionnement (5) est réalisée au moins en rapport avec les couteaux (2) et/ou des filets traçants. Le frottement et l'adhérence entre le matériau de protection (4) et le matériau de conditionnement (5) est si faible qu'un coulissement relatif peut survenir entre les deux matériaux (4, 5) pendant le processus de découpage à la presse, qui combine une opération d'éjection et une opération de nettoyage.

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