Direct answer
Reduce changeover time by observing the complete period from the last good pack of the old run to the first repeatable good pack of the new run. Separate internal work that needs a stopped machine from external preparation, remove waiting and adjustment, then standardise the improved sequence.
Key takeaways
- Use one clear start and finish definition.
- Observe the work rather than relying on memory.
- Convert, simplify and parallelise safely.
- Prove the first good pack and maintain the standard.
Set a measurable objective
Teams often report tool-change time while excluding material removal, cleaning, line clearance, recipe selection, first-off inspection and repeated adjustment. Measure the customer-relevant production loss.
- Start at the last acceptable pack of the old run
- Finish at the first repeatable acceptable pack
- Include cleaning, clearance and quality release
- Record people, waiting and interventions
Measure the current production condition
Time each task and classify internal, external, walking, waiting, adjustment or defect correction. Video can help where site rules and people permit it.
- Record task sequence and duration
- Identify missing tools, parts or information
- Count adjustments and test packs
- Separate planned work from abnormal recovery
Plan the work in a controlled sequence
Prepare parts, materials, settings and documents before the stop. Use repeatable location, quick adjustment, clear scales, recipes and mistake-proofing. Parallel work only where roles and access remain safe.
- Pre-stage cleaned and verified change parts
- Use labelled storage and changeover carts
- Replace trial-and-error with recorded settings
- Design quick-release or common parts where justified
Hold the improvement after handover
A fast mechanical change that creates later quality drift is not an improvement. Record the approved sequence, target and first-off checks and repeat the observation periodically.
- Use a standard work sheet with roles
- Audit preparation before the planned stop
- Record first-off quality and adjustment
- Review variation between teams and shifts
Comparison table
| Stage | Customer decision | Evidence |
|---|---|---|
| Objective | Use one clear start and finish definition. | A numerical target and owner |
| Baseline | Observe the work rather than relying on memory. | Representative production records |
| Action | Convert, simplify and parallelise safely. | A timed plan with responsibilities |
| Control | Prove the first good pack and maintain the standard. | Approved standard work and review data |
Free working templates
Download these files and adapt them to the actual machine, product, site and acceptance plan.
Related buyer guides and tools
Relevant machinery and support routes
Use the guide to define the requirement, then compare the specialist routes below against representative product, packaging and output evidence.