Set allowed waste in metres, not by feel

Write allowed waste in metres: so many at the start of the roll, so many at the tail, so many at a splice. Do not write "reasonable waste". Defects past those metres still get recorded and dealt with. With no number, every shift's waste counts as reasonable.

Measured waste length at the start and tail of the roll

Write allowed waste in metres: so many at the start of the roll, so many at the tail, so many at a splice. Do not write "reasonable waste". Defects past those metres still get recorded and dealt with. With no number, every shift's waste counts as reasonable.

Measured waste length at the start and tail of the roll

Why call it this way

If the camera alarms in the first metres of the roll, that can be agreed waste, but the metres have to be printed on the ticket beforehand, for example 20 metres at the start. Whether it is 20 or 50 is set by the process for this job, not by the operator that day. Splices are counted on their own.

Side by side

What you see Call Do not
Inside the agreed metres Count it as allowed waste Leave it unrecorded
Past the agreed metres Treat it as a defect Still call it normal waste
No metres on the ticket Write them before the roll starts Let each shift set its own

Check at changeover or roll start

  1. Write start, tail, and splice metres on the job ticket.
  2. Alarms past those metres are handled as usual.
  3. Do not hide a running defect inside the waste allowance.

Related reading

Written by

Editorial Team

Print quality & inspection specialists

We write about print quality inspection from the production floor: defects we have seen, standards we work against and equipment we have evaluated.

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