Foam Issues in Waterborne Polyurethane? Chemi Tech Offers Efficient Solutions

In the production and application of various waterborne polyurethane products, foam often becomes a persistent obstacle. These stubborn bubbles not only affect the filling efficiency of the production line but can also lead to surface defects, craters, fish-eyes, and other issues in the final product, severely compromising its appearance and intrinsic properties. Traditional defoaming methods often offer only temporary effects or exhibit poor compatibility with the system, introducing new challenges.

Chemi Tech focuses on addressing this industry challenge. We deeply analyze the mechanism of foam generation and have developed a series of high-performance defoamers specifically for waterborne polyurethane. Their core advantage lies in rapidly penetrating and breaking the foam film wall, achieving a balance between instant defoaming and long-lasting foam suppression. The products are meticulously designed to have excellent compatibility with waterborne polyurethane systems, avoiding side effects such as craters, haziness, or impacts on coating gloss and adhesion.

Our solution is specific and clear. First, our technical team assists customers in analyzing the specific stage and cause of foam generation, whether it's during production mixing, filling processes, or application. Next, based on the system characteristics, we recommend the most suitable defoamer type, for instance, we have different targeted products for high-viscosity systems or high-shear environments. Then, we provide precise dosage references and addition method guidance, typically recommending adding in stages at appropriate points in the production process for optimal results. Finally, we support customers with sample testing and production verification to ensure the solution is practically effective.

A practical scenario illustrates the point: A company producing waterborne polyurethane leather coatings encountered abundant fine foam after high-speed dispersion, causing uneven textures in subsequent coating processes. After evaluation by Chemi Tech technicians, our Chemi Foam AX-305 product was recommended. After addition at the suggested point and dosage, the foam was rapidly eliminated within a short time and did not reoccur in later process stages. The final coating surface was smooth and even, passing all physical performance tests, and production efficiency increased by approximately 15%.

Choosing Chemi Tech means you obtain not just a defoamer, but a set of targeted problem analysis and solution support. We are committed to helping customers optimize their processes, improve product quality, and make production workflows smoother.