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Detergents, sanitizers and disinfectants are filled on machines that look like beverage fillers but are specified very differently: the product's viscosity, foam tendency and corrosivity decide the wetted materials and the filling principle.
| Product | Usual principle | Watch point |
|---|---|---|
| Alcohol sanitizer (water-thin) | Flow meter / gravity | Flammability — explosion-proof configuration |
| Detergent (high foam) | Bottom-up filling, slow-start profile | False level detection |
| Gel detergent (viscous) | Piston / volumetric | Stringing at cutoff |
| Bleach (oxidising) | Non-metallic wetted path | Chlorine release, seal compatibility |
Weight-based rotary filling is well suited to viscous household products because it measures net weight directly and tolerates viscosity variation between batches. Volumetric systems, by contrast, need re-calibration as viscosity and temperature shift.
Household chemical plants usually run several bottle formats and closures (trigger sprayers, flip-top caps, pumps). Filling and capping stations on a shared frame with servo adjustment reduce changeover time, and a multifunction block can combine rinse, fill and cap functions in one footprint.
Sometimes, but wetted materials and foam handling usually need changing. Detergent foams heavily and may attack standard seals, so nozzles, seals and the filling profile must be reviewed against the actual formulation.
Piston or volumetric filling handles viscosity well; weight-based rotary filling is preferred where batch-to-batch viscosity varies, because it measures net weight directly.
Fill from the bottom, use a two-speed profile (fast then slow), and allow a short settling time before capping. These measures solve most foam-related fill errors without changing the product.
They are required when the product is flammable — alcohol-based sanitizers above the relevant flash point threshold. Water-based detergents and most disinfectants do not need them, but ventilation and containment still apply.