Does unstable empty bottles need rinsing, washing or inspection before production?
Decide from the contamination risk, supplier controls, storage, product risk and finished-pack requirements. For unstable empty bottles, this issue must be addressed: low mass and high centre of gravity make transfer and detection difficult.

What should I check first?
Record the machine state and the finished result before changing settings. This helps identify where control is first being lost.
- Inspect the full range of unstable empty bottles.
- Observe controlled guides, pucks or close-pitch handling during bulk loading and restart.
- Record damage, orientation loss, contamination and rejected items.
- Measure representative parts or bottles from several batches.
- Record the true required feed rate plus restart and surge conditions.
- Observe the first point at which orientation or stability is lost.
Why is this production problem happening?
Work from the evidence and change one variable at a time. These are the most relevant causes to investigate first.
- Container or component tolerance exceeds the handling tooling range.
- Bulk pressure, static, damage or contamination affects separation.
- The route lacks confirmation of orientation, presence or rejection.
- The item geometry does not provide a reliable orientation feature.
- Bulk loading creates nesting, tangling or excessive pressure.
- Transfers and guides do not maintain a stable datum.
How can I correct or improve it?
Make a controlled change, repeat the same measurement and compare the result before moving to the next adjustment.
- Approve a representative sample matrix.
- Control bulk feed, recirculation and downstream demand.
- Add inspection or confirmation where the risk requires it.
- Prove feedability using production parts from normal tolerances.
- Control bulk load and provide accumulation without damaging product.
- Improve transfers, guides and positive orientation checks.
What should I send Lancing?
The most reliable recommendation is based on representative production materials and a measurable acceptance result.
- Production quantities of unstable empty bottles
- Drawings and tolerance information
- Expected contamination or defect classes
- Required orientation and output
- Video of current manual or automatic handling
- Representative containers or components from several batches
- Drawings, material, weight and orientation requirement
Which applications does this answer cover?
More quick answers about this problem
What should I check first for unstable empty bottles?+
Inspect the full range of unstable empty bottles.
Why does this problem happen with unstable empty bottles?+
Container or component tolerance exceeds the handling tooling range.
How can I improve or correct the problem with unstable empty bottles?+
Approve a representative sample matrix.
Which part of the production line does this question relate to?+
This question relates primarily to bottle preparation & component feeding. It may also be affected by upstream product or pack supply and by downstream handling, so check the full production sequence rather than one machine in isolation.
What should I send when asking for a machinery recommendation?+
Send Production quantities of unstable empty bottles; Drawings and tolerance information; Expected contamination or defect classes; Required orientation and output. Representative production samples and a measurable acceptance target are normally more useful than a catalogue description alone.
Explore the relevant Lancing machinery options
Review suitable equipment and application guidance, then request a recommendation based on your product, pack and required accepted output.
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