Chemi Tech Defoamer for Powder Coatings: Effectively Eliminate Pinholes and Bubbles

In powder coating production and application, bubbles and pinholes have long been critical issues that compromise product quality. These defects not affect appearance and texture but also reduce corrosion resistance and durability, leading to increased customer complaints and rework costs.

To tackle these challenges, Chemi Tech has developed a series of defoamers specifically designed for powder coating systems. The mechanism involves reducing surface tension to facilitate bubble release and prevent reformation, resulting in a smooth and dense coating surface after curing.

Our solution follows a four-step process: First, analyze the root cause of foaming through sample testing; second, recommend a suitable defoamer product based on the resin system and process conditions; third, provide dosage guidance and process integration advice; finally, monitor application results and optimize continuously.

A metal hardware coating company faced a high reject rate due to dense pinholes during high-temperature curing. After using Chemi Tech Defoamer KM-220, the coating surface achieved improved smoothness, reducing the defect rate from 15% to below 3%, while avoiding energy and material waste from recoating.

Chemi Tech defoamers are compatible with epoxy, polyester, and other systems, suitable for extrusion and sheet molding processes. They offer an cost-effective quality enhancement without compromising gloss or mechanical properties.