Direct answer
A line-clearance procedure should identify every location where product or packaging can remain, assign removal and verification responsibility, reconcile controlled components, clean to the required standard and authorise the first pack of the next run.
Why this matters
Packaging lines contain hidden traps in guides, conveyors, magazines, printers, rejects and guards. Product and label mix-ups can occur even when the main hopper or work surface appears clear.
Decision table
| Clearance area | Verify | Evidence |
|---|---|---|
| Product path | No previous product or residue | Inspection or cleaning record |
| Packaging | Correct bottles, caps, labels, film and cartons | Component reconciliation |
| Coding | Correct date, batch, artwork and recipe | First-off verification |
| Rejects and waste | All previous material removed | Waste record |
| Change parts | Correct, clean and identified tooling | Setup check |
Information to collect
- Map all product and packaging retention points.
- Define the previous-to-next product risk.
- Remove obsolete labels, codes and documents.
- Reconcile controlled packaging where required.
- Verify cleaning and line clearance independently when risk justifies it.
- Approve the first-off pack before release.
Practical method
- 1
Use a format-specific checklist.
- 2
Pre-stage only clearly segregated next-run materials.
- 3
Photograph or identify hidden check points.
- 4
Record completion and verifier.
- 5
Investigate every found remnant as a system learning event.
Common mistakes to avoid
- Checking only visible work surfaces.
- Leaving labels in printer or applicator paths.
- Clearing the machine but not rejected packs.
- Starting the next run before code verification.
- Using one generic checklist for very different lines.
Questions people also ask
Is line clearance the same as cleaning?
No. Cleaning removes residue; line clearance also removes and verifies product, packaging, codes, documents, rejects and tooling from the previous run.
Who should verify clearance?
Set roles from product risk and the site quality system; higher-risk changes may need independent verification.
Can materials for the next run be pre-staged?
Yes only with controlled identification and segregation that prevents mix-up.
What should happen if old packaging is found?
Stop the release, contain affected product and investigate why the defined clearance control failed.
Continue from the requirement to the equipment
Use the specialist route that matches the product, pack and process. Final suitability requires representative samples, output targets and site information.