Waterborne coatings have become mainstream in the market thanks to their environmentally friendly characteristics, but foam problems occur frequently during production, filling, and application, directly affecting coating appearance and performance. If this foam is not eliminated in time, it will cause defects such as shrinkage cavities and fish eyes in the paint film, reducing the product qualification rate and increasing production costs.
Faced with this widespread pain point, Chemi Tech, drawing on in-depth research into surface chemistry, has developed a series of high-efficiency waterborne coating defoamers. Our solution is not limited to adding a single additive; instead, it provides a systematic foam control strategy.
First, precisely identifying the source of the foam is key. The foam may originate from high-speed stirring during production, or from the stabilizing effect of surfactants in the formula. Our technical team recommends that the first step be a careful on-site diagnosis to clarify the specific stage and main cause of foam generation.
Second, select the type of defoamer in a targeted manner. We offer a variety of products, including foam-suppressing and foam-breaking types. For foam that is continuously generated during production, choose a product with an outstanding foam-suppressing effect; for foam that already exists during application, choose a product that breaks foam quickly. When selecting, it is necessary to balance defoaming efficiency with system compatibility, avoiding any impact on coating gloss or the creation of surface defects.
The third step is scientific addition and evaluation. Defoamers are usually added during the grinding stage to ensure full dispersion. After addition, rigorous testing is required, including heat storage stability, freeze-thaw stability, and application simulation tests, to ensure the defoaming effect remains durable and stable.
We once assisted a coating manufacturer in East China in solving the foam problem with its high-end interior wall paint. This customer experienced stubborn foam on both the filling line and during roller application. After an on-site assessment, Chemi Tech recommended a specific defoamer model and adjusted the addition process. After the adjustment, the efficiency of the product filling line increased by 15%, the paint film after application was flat and smooth, and the customer complaint rate dropped significantly. This demonstrates the practical value of a targeted solution.
Chemi Tech believes that solving foam problems requires combining professional products with a scientific approach. We are committed to providing our customers with not just defoamers, but also reliable technical support and process optimization advice, working together to improve the final performance of waterborne coatings.