Cutting variations in stripes (blank development)

Possible causes:

• wrong cutter setting
• cutters are blunt
  • grind your cutters
• watch the sucker unit in front of the 1. cutting operation for too much downwards-bow of the sheet
  • adjust bottom stop
  • replace worn out sucker or parts
  • mount the full range of downholder rings – see picture below!
  • they prevent the bowing movement of the sheets

NOTE: The SQM measuring device can only detect “angular” cutting errors!