How this product class behaves
The typical process uses abrasion-resistant lobe, rotor, progressive-cavity or large-port piston filler supplied through continuous agitation or recirculation sized to prevent settling without damaging the product. The equipment should be configured to test settling rate, particle size, abrasive wear and valve passage.
Before discussing speed or automation, define the actual operating window: minimum and maximum dose, product temperature, density, viscosity or bulk density, inclusions, foam, shear sensitivity, corrosivity, pack dimensions and closure. A single nominal sample is not enough for a robust specification.
Recommended filling technologies
Primary route
Abrasion-resistant lobe, rotor, progressive-cavity or large-port piston filler.
Product supply
Continuous agitation or recirculation sized to prevent settling without damaging the product.
Critical control
Test settling rate, particle size, abrasive wear and valve passage.
Temperature and product condition
Held stable to maintain viscosity and suspension behaviour. Temperature changes may alter viscosity, foam, gas breakout, dose accuracy, closure performance or pack stability. Define where temperature is measured and the permitted deviation.
Cleaning, changeover and material compatibility
Plan for flushable large-bore circuits with inspection points at wear components. Product-contact materials, elastomers, lubricants, surface finish and drainage should be reviewed against every formulation. Include safe access, line clearance, product recovery and waste handling.
Principal production risks
Risk focus
Settling, wear, blocked valves, dose variation and difficult clean-down. The process and machinery risk assessments should cover normal running, refill, sampling, adjustment, blockage clearance, cleaning and maintenance.
What to prove in a product trial
- Repeatable dose at minimum and maximum line speed
- Clean cut-off and acceptable pack presentation
- Stable product feed through refilling and batch end
- Changeover and cleaning time using the intended method
- Closure, label, code and distribution performance after filling
Example product applications
Emulsion Paint in Bottles
Slurry or suspension
Paints, coatings & inksEmulsion Paint in Jars
Slurry or suspension
Paints, coatings & inksEmulsion Paint in Pails
Slurry or suspension
Paints, coatings & inksEmulsion Paint in Drums
Slurry or suspension
Paints, coatings & inksEmulsion Paint in Pouches
Slurry or suspension
Paints, coatings & inksAcrylic Paint in Bottles
Slurry or suspension
Paints, coatings & inksAcrylic Paint in Jars
Slurry or suspension
Paints, coatings & inksAcrylic Paint in Pails
Slurry or suspension
Paints, coatings & inksAcrylic Paint in Drums
Slurry or suspension
Paints, coatings & inksAcrylic Paint in Pouches
Slurry or suspension
Paints, coatings & inksGloss Paint in Bottles
Slurry or suspension
Paints, coatings & inksGloss Paint in Jars
Slurry or suspension
Common questions
Which filling machine suits a slurry or suspension?
A abrasion-resistant lobe, rotor, progressive-cavity or large-port piston filler is the normal starting point. Final selection depends on dose, accuracy, product feed, temperature, pack, cleaning, contact materials and required output.
Why are product samples needed before specifying a filler?
Published viscosity or density values do not show aeration, particles, stringing, shear sensitivity, temperature effects or interaction with the nozzle and pack. A representative test exposes these issues before manufacture.
Can one machine cover several product viscosities or formats?
Often yes, within a defined operating window. The specification should identify the easiest and most difficult products, smallest and largest doses, every pack height and diameter, and the acceptable changeover method.
How is filling accuracy confirmed?
Agree whether the target is volume or mass, the permitted tolerance, test method and sampling frequency. Measure warm-up, hopper refill, speed changes and end-of-batch conditions rather than only stable running.
What determines the real line speed?
The slowest repeatable operation governs output. Product refill, container loading, filling time, closure handling, label application, rejects, accumulation, cleaning and operator intervention all affect the sustainable rate.