Direct answer
A useful packaging-line audit starts with the commercial output and the product path, then follows losses through materials, people, machinery, controls, quality and maintenance. Record evidence before recommending equipment or changing settings.
Why this matters
A line can look busy while producing fewer good packs than required. A structured audit separates visible symptoms from the initiating cause and prevents a long list of unranked improvements.
Decision table
| Audit area | Evidence to collect | Useful output |
|---|---|---|
| Demand and output | Good packs by product, shift and hour | Demand gap and realistic target |
| Losses | Stops, slow running, rejects, rework and changeovers | Ranked loss tree |
| Product flow | Starved, blocked and accumulation states | Constraint hypothesis |
| Quality | Fill, torque, code, label and seal results | Defect Pareto |
| People and safety | Tasks, access, interventions and safe systems | Risk and labour priorities |
Information to collect
- Define the audit boundary from an agreed infeed condition to saleable output.
- Use at least one representative product and one difficult format.
- Record event duration and lost good packs, not event count alone.
- Separate planned and unplanned losses consistently.
- Interview operators and observe the actual work rather than relying only on manuals.
- Photograph layouts and record dimensions without exposing confidential data.
Practical method
- 1
Build a current-state process map.
- 2
Measure one representative production run.
- 3
Rank losses by commercial and safety impact.
- 4
Test the leading cause with one controlled change.
- 5
Issue an action register with owner, evidence, due date and verification method.
Common mistakes to avoid
- Auditing only at catalogue speed.
- Treating every jam as a separate root cause.
- Ignoring material variation and replenishment.
- Listing actions without expected benefit.
- Recommending automation before proving the bottleneck.
Questions people also ask
How long should a line audit take?
A focused audit may use one or two representative production runs, but the duration should cover normal stops, replenishment and a format change.
Should OEE be calculated during the audit?
Yes where the definitions are agreed, but keep the underlying stop, speed and quality losses visible.
What should be audited first?
Start at the saleable output and work backwards to the point where the first constraint or defect is introduced.
Can an audit be done without stopping production?
Observation and data capture can normally begin while running; measurements or tests that require access must follow the site safety procedure.
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.