Describe the product as it reaches the machine, not only by its commercial name. Flow, temperature, air, particles and refill conditions can change the suitable dosing and nozzle design.
Product behaviour determines how material can be supplied, measured, cut off and delivered into the pack. Thin liquids may splash or foam; viscous products may string; suspended particles may settle or block a valve; powders may aerate or bridge; granules may segregate or damage. The filling specification should state the operating condition and the variation that the machine must handle.
These factors help suppliers compare the same application and make assumptions visible before equipment is selected.
| Behaviour | What to describe | Why it matters |
|---|---|---|
| Flow and viscosity | Does the product pour freely, creep, string or require pressure? | Influences pump, valve, nozzle and supply route. |
| Air and foam | Does mixing or pumping entrain air or create persistent foam? | Influences fill profile, settling time and container capacity. |
| Particles | Size, shape, concentration, settling and fragility. | Influences passage size, agitation and cut-off. |
| Dry-product flow | Free flowing, cohesive, dusty, static or prone to bridging. | Influences hopper geometry, feeder and dust control. |
| Temperature and time | Condition at start, during the batch and after standing. | Shows whether behaviour changes during production. |
Record how the sample was prepared, mixed, heated, cooled or transferred before the trial. A product taken from a small container may behave differently from material supplied through production pipework. If the operating condition varies, test the relevant boundaries rather than one ideal sample.
A clean target fill is not enough if the nozzle drips, the neck is contaminated, particles are damaged or the product continues to settle after the check. Review the pack immediately after filling and at the point where it reaches capping, sealing or weighing.
Each answer states the practical variables that should be confirmed for the actual product, pack and production environment.
No. Viscosity is important, but the machine also needs to handle air, foam, particles, product temperature, chemical compatibility, cut-off and cleaning. Two products with a similar apparent viscosity can behave differently when pumped or forced through a nozzle.
Particles need a clear passage through pumps, valves and nozzles without blockage or unacceptable damage. Size alone is not sufficient; shape, concentration, tendency to settle and product viscosity also matter. Representative product should be mixed and sampled consistently during the test.
Material changes should be reviewed before production use. A change in supplier, formulation, particle size, temperature or processing can affect filling and cleaning. Retain an approved sample or specification and repeat relevant trials when the change is material to machine performance.
The supply system creates the pressure, head, agitation and refill conditions seen by the filler. A dosing head tested from a small vessel may not behave the same when connected to a production tank or transfer pump. Define the expected supply boundary before accepting the trial result.
Powder results can drift when bulk density changes through aeration, compaction, humidity, refill level, vibration or segregation. The hopper and refill sequence should be part of the test, and the result should be checked after the process reaches a stable operating condition.
Use these pages to connect the technical question to the machinery, trial or project scope.
Send the product, packaging components, target output, current process and any layout or interface information. Lancing can use the details to identify the next trial, machine category or integration review.