Cold formed blister packaging manufacture

摘要

In a process for production of cold formed blister packaging, a metal-plastic laminate material (20) is held in a clamp (5) while the packaging recesses are formed between a die opening or openings (8) and a corresponding punch (6). The die (1) and clamp (5) have opposing edges (11,12) and the die (1) has a shoulder (13) inside the edge (11) surrounding the die opening (8). The shoulder (13) surface is 0.01-10mm deeper than the die edge (11). A first punch (6) with a high friction working face preforms the laminate (20) in one or more steps down to 100% of final recess depth and a second punch (6) with a low friction face completes the forming to at least the full recess depth.Also claimed is the process equipment.