A good bubble bath cleanses mildly, cares for the skin and has a pleasantly viscous consistency. To achieve this, raw materials of very different natures must become a stable mass. We design and supply homogenising mixers for this multi-stage process. More on this under Cosmetics.
Raw materials for a bubble bath
The basis of most bubble baths is an aqueous surfactant solution. The surfactants provide the cleansing effect, and the pH value should be around 5.5.
Relipidising oils
Emulsifiers such as lecithin, fatty alcohols, lactic acid esters or glyceryl laurates distribute the oils stably.
Thickeners and gelling agents
With a high water content, xanthan, cellulose, alginate or polyglycerol esters provide the desired consistency.
Requirements for the homogenising mixer
When correctly designed, modern plants ensure optimum processes. The following points are particularly important:
- Drawing in water and fat phases in the hot/cold process directly into the shear zone of the dispersing machine
- Stable emulsion, with all components only coming together shortly before filling
- Pressure- and vacuum-resistant design to prevent air entrainment
- Scraper system independent of the direction of rotation with vertically and horizontally mixing agitators
- In-process pH monitoring
- Aseptic GMP design with CIP cleaning
Similar requirements apply to shower gels and shampoo. We will be happy to advise you, including on used homogenising mixers.
FAQ: Manufacturing bubble bath
What is a bubble bath made of?
Water and high-foaming surfactants, thickeners, relipidising oils with emulsifiers, fragrances, colourants and preservatives. The pH value is usually around 5.5.
How is bubble bath manufactured industrially?
Surfactants are dissolved in water, powders and thickeners are drawn in under vacuum, oils are emulsified, additives are mixed in, and pH value and viscosity are adjusted. Large quantities are also produced continuously.
How can foaming be avoided during production?
By working under vacuum, adding below the liquid level and using adapted speeds.
Which machine is suitable?
Pressure- and vacuum-resistant homogenising mixers with a scraper system, phase and powder induction, in-process pH measurement and a rotating CIP system.
Does SEEFRIED supply plants for bubble baths?
Yes, we design plants for bubble baths and other surfactant products and offer suitable used homogenising mixers.