In the production of gypsum products, bubbles are a common culprit that causes pinholes, depressions, reduced strength, and even rejected appearance. Whether for gypsum boards, decorative components, or precision molds, bubble defects directly affect the yield rate and customer trust. Traditional methods such as manual stirring to release air or after-the-fact repair are inefficient and of limited effect, and cannot meet the needs of large-scale, high-quality production.
Chemi Tech has conducted an in-depth analysis of this pain point and developed a highly targeted gypsum-specific defoamer series. Our solution is not a simple addition, but is based on a deep understanding of the gypsum hydration system and the mechanisms of bubble formation. The product can quickly penetrate and destroy the bubble film, prompting bubbles to rapidly coalesce and rupture while inhibiting the generation of new bubbles, thereby controlling the problem at its source.
The specific implementation steps are as follows: first, our engineers can work with you to analyze the gypsum raw materials used, process parameters, and the specific bubble types, such as those entrained by stirring or generated by reaction. Then, we recommend a suitable defoamer model and dosage, and it is usually recommended to add it in the early or middle stage of mixing to ensure even dispersion. The addition ratio must be determined through lab tests, generally in the range of 0.1%-0.5%. Finally, we verify the defoaming effect by observing the leveling of the slurry, the cross-section of the poured product, and the surface condition.
We once assisted a manufacturer specializing in high-quality gypsum decorative moldings. When pouring complex patterns, this customer had long been troubled by fine bubbles gathering at the corners of the patterns, which caused dense pockmarks on the surface after demolding, making the subsequent polishing process burdensome and damaging the details. After adopting Chemi Tech's customized defoaming solution, the bubbles in the slurry were significantly reduced in the later stage of mixing, the pouring flow improved, the surface of the product after demolding was smooth and flat, the patterns were clear and sharp, and almost no subsequent repair was needed. The product's premium-grade rate was greatly improved, and the customer expressed high approval.
Choosing Chemi Tech means not only choosing a product, but also gaining production support that ensures stable quality of gypsum products. We are committed to helping you overcome defoaming challenges and achieve cost reduction and efficiency gains with professional technology and products.