In the preparation and application of vinyl acetate-acrylic emulsions, foaming is a common challenge. Too much foam not only lowers production efficiency and lengthens filling time, but may also affect the uniformity of the final product, the appearance and performance of the coating and even reduce equipment utilisation. How to control foam efficiently and durably has become a focus for many production and technical teams.
Chemi Tech understands this pain point deeply and, targeting the characteristics of vinyl acetate-acrylic emulsions, has developed a dedicated defoamer series. Our solution is not simply adding an auxiliary agent, but is based on an analysis of the foam generation mechanism, providing full-process support from prevention to elimination.
First, our defoamer has excellent compatibility and can disperse quickly in vinyl acetate-acrylic emulsion systems without affecting the viscosity, transparency or film-forming performance of the emulsion itself. Second, its foam-suppressing and foam-breaking abilities are outstanding: it can both prevent new foam from forming during production stirring and pumping, and quickly eliminate stubborn foam that has already formed.
The specific application steps are clear and simple: step one, according to your emulsion formulation and process conditions, our technical team will help select the most suitable defoamer model; step two, add it in the middle-to-late stage of emulsion preparation, usually at 0.1%-0.5%, with the exact amount determined by bench trials; step three, use an appropriate mixing method to ensure the defoamer is evenly dispersed; step four, observe the foam condition in production and in the finished product application, and carry out effect evaluation and optimisation.
We once helped an enterprise specialising in high-quality coating materials solve the problem of foam overflow during high-speed filling of its vinyl acetate-acrylic emulsion product. By analysing its process, we recommended a specific Chemi Tech defoamer model. After adjusting the addition point and dosage, the foam overflow was immediately brought under control, the filling line speed increased by about 15%, and the final product's coating surface became smoother and more uniform. The customer was satisfied with the improvement in production efficiency and the stability of product quality.
Chemi Tech is committed to providing reliable foam management solutions for the vinyl acetate-acrylic emulsion field. Our products and technical support are designed to help you optimise processes and improve product competitiveness. If you are facing foaming troubles, please contact our engineers to obtain a tailor-made solution.