Technical Terms
Staggered Pattern: Holes are aligned in staggered or nested orientation. A staggered perforation pattern can provide the highest open area.
Straight Pattern: Perforated holes are aligned in straight rows and columns.
Unfinished Ends: The end perforation pattern is not solid and appears rough and incomplete at the end of the sheet.
Margins: Area on the side, ends, or inside the perforated sheet without perforations
Safe Side Margins: This type of margin is achieved by perforating the material all the way up to the edge but not on or over the edge
Perforated Tool/Tooling: Interchangeable die sets: pins/punches, die plate, stripper plate, and punch holder used on the perforating presses to perforate the various perforation patterns
Hole Size: Diameter measurement of the perforation shape; measurement from side to side
Finished Ends: The end perforation pattern is solid and appears uniform or complete at the end of the sheet
Read more about this topic: Perforated Metal
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