How folding-carton inspection differs from a label web
A folding carton is one sheet at a time. A label web is continuous. A carton is judged on the gripper edge, the cut line, and front and back. A web is judged on metres and splices. Putting “reject by the metre” onto sheets means you will not find which sheet it was.
A folding carton is one sheet at a time. A label web is continuous. A carton is judged on the gripper edge, the cut line, and front and back. A web is judged on metres and splices. If the web practice of “reject by the metre” is put straight onto sheets, you will not find which sheet it was.
Why it is judged this way
When a carton press stops, the operator picks up a sheet, not a length of web. The record needs that sheet’s place in the pile, or its inkjet code. A web needs metres, or the rewind cannot find the place. The inspection point is different too: cartons are often before or after die-cutting or the folder-gluer, labels at printing or rewind.
What to compare
| What you see | Call it | Do not |
|---|---|---|
| You must find one sheet | Use a sheet number or an inkjet code | Write only a time |
| You must find one length on the roll | Use metres | Write only that it looked about the same |
| Both sides carry artwork | Both sides need a conclusion | Release after inspecting the face only |
Check at a job change or a new roll
- Confirm whether this job is sheets or a web, and match the record unit to that.
- A sheet must be findable as that sheet. A web must be findable as that metre.
- If the back carries artwork, do not build a face template only.
