How do I choose a nozzle or discharge for washing-up liquid?

Quick answer

Choose the outlet around product behaviour, the smallest pack opening and the clean cutoff required. For washing-up liquid, the nozzle must handle is viscous and strongly foam-forming while entering or approaching bottles or refill pouches without splash, blockage, foam or pack contact.

Production-line scene relevant to filling & dosing
Filling & dosing in a production environment
01

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.

  • Measure the smallest internal opening and shoulder clearance of bottles or refill pouches.
  • Record the largest particle, string length or foam tendency where relevant.
  • Check whether bottom-up filling or positive shutoff is required.
  • 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.
02

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.

  • The bore is too small or too large for the product and required flow.
  • The nozzle closes too slowly or retains product after cutoff.
  • Pack tracking allows the opening to miss the nozzle centre.
  • The dosing principle is unsuitable for viscosity, particles, aeration or accuracy.
  • Product conditions are changing during the run.
03

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.

  • Trial alternative bore, tip and shutoff geometries.
  • Control nozzle height and motion against the actual pack.
  • Add drip capture only after the root cutoff issue has been addressed.
  • Stabilise product temperature, mixing and supply before retuning.
  • Test a representative product and pack matrix across the full fill range.
Prepare your application

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?

Production stageFilling & dosing
Product or pack routeLiquids
ApplicationWashing-up liquid
Questions people also ask

More quick answers about this problem

What should I check first for washing-up liquid?+

Measure the smallest internal opening and shoulder clearance of bottles or refill pouches.

Why does this problem happen with washing-up liquid?+

The bore is too small or too large for the product and required flow.

How can I improve or correct the problem with washing-up liquid?+

Trial alternative bore, tip and shutoff geometries.

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.

Recommended next step

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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