How do I change between pack sizes when filling washing-up liquid?
Create a controlled recipe and mechanical setting sheet for each approved pack. Change parts, guides, nozzle height, dose, timing and first-off checks must all be linked; for washing-up liquid, also include flush surfactant residue thoroughly and verify fragrance carryover.

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.
- List every mechanical and recipe setting that changes.
- Use datum scales or fixed references rather than operator judgement.
- Run first-off checks at the lowest and highest approved fill.
- Record ten consecutive fills by weight and note the product temperature, density or batch condition.
- Confirm the product supply remains stable at minimum and maximum hopper or tank levels.
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.
- Settings are recorded without the matching physical change parts.
- Residual product changes the first fills after restart.
- The pack matrix contains an untested opening or stability limit.
- The dosing principle is unsuitable for viscosity, particles, aeration or accuracy.
- Product conditions are changing during the run.
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.
- Create format sheets with photographs and measured settings.
- Stage clean change parts before the line stops.
- Approve first-off samples before releasing normal production.
- Stabilise product temperature, mixing and supply before retuning.
- Test a representative product and pack matrix across the full fill range.
What should I send Lancing?
The most reliable recommendation is based on representative production materials and a measurable acceptance result.
- Representative sample of Washing-up liquid
- All relevant bottles or refill pouches
- Target fill and tolerance
- Required accepted output
- Photographs or video of the current process
- Product name and a sample or SDS where relevant
- Viscosity, temperature, particles, foaming and density
Which applications does this answer cover?
More quick answers about this problem
What should I check first for washing-up liquid?+
List every mechanical and recipe setting that changes.
Why does this problem happen with washing-up liquid?+
Settings are recorded without the matching physical change parts.
How can I improve or correct the problem with washing-up liquid?+
Create format sheets with photographs and measured settings.
Which part of the production line does this question relate to?+
This question relates primarily to filling & dosing. 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 Representative sample of Washing-up liquid; All relevant bottles or refill pouches; Target fill and tolerance; Required accepted 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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