In spray operations, high-viscosity coatings or specific working conditions often cause the circulating liquid in the water curtain booth to generate large amounts of stubborn foam. This foam not only overflows the tank and contaminates the floor, compromising work safety, but also adsorbs large quantities of paint mist particles, reducing pump efficiency, clogging pipes, and potentially causing incomplete paint mist treatment that affects the final surface quality of sprayed workpieces. Traditional defoaming methods often produce only short-lived results or cannot cope with high-viscosity systems, becoming a persistent headache for many production workshops.
To address this market pain point, Chemi Tech has developed a high-efficiency defoamer specifically suited to high-viscosity water curtain booth environments. Based on unique modified silicone-polyether composite technology, the product's molecular structure can rapidly penetrate and spread across the foam film surface, effectively lowering local surface tension and causing the foam film to thin and burst quickly. More importantly, it remains stably dispersed in the circulating liquid to provide long-lasting foam suppression, continuing to perform even in environments mixed with high-solids, high-viscosity paint mist.
Our solution is specific and easy to implement. The first step is evaluation and cleaning: we recommend draining and performing basic cleaning of the existing water curtain booth system to reduce interference from residual old liquid on the new product's performance. The second step is initial addition: at a ratio of 0.1% to 0.3% of the total circulating water volume, pour Chemi Tech's defoamer directly into the tank and start the circulation system to disperse it evenly. The third step is routine maintenance: during continuous spray operations, depending on foam formation, add a small top-up dose of defoamer at regular intervals, typically 10% to 20% of the initial dosage, to keep the system foam-free.
Practice shows that this solution is remarkably effective. An automotive parts spray company, whose water curtain booth was processing a high-viscosity primer, suffered severe foam buildup that required hourly shutdowns for cleaning, with occasional oil spots on workpiece surfaces. After adopting Chemi Tech's defoamer and using it according to the steps above, the foam was fully brought under control within 15 minutes of addition, with only a small top-up needed each shift thereafter. The system ran continuously, pump load returned to normal, and the rate of workpiece surface defects caused by foam carryover dropped significantly, improving both the workshop environment and production efficiency.
Choosing Chemi Tech means not only choosing a product, but also introducing a reliable, professional foam control system to your spray production line. We are committed to helping customers resolve process challenges through precise chemical solutions and achieve stable, efficient and clean production goals.