How to Solve Papermaking Defoaming Challenges? Chemi Tech's Efficient Defoamers Offer Professional Solutions

Foam is a common and troublesome issue in paper production processes. From pulping and washing to sheet formation and coating, almost every stage can generate substantial foam due to mechanical agitation, chemical additives, or stock characteristics. This foam not only causes stock overflow and affects cleanliness and safety but also directly leads to quality defects such as holes, poor formation, and uneven sizing or coating on the paper sheet. In severe cases, it can even cause web breaks, resulting in reduced production efficiency and material waste.

Common defoaming products on the market often face challenges: some have strong instant foam-breaking capability but lack persistent foam inhibition, requiring frequent addition; others have poor compatibility with the stock system, potentially causing grease spots or affecting the performance of subsequent chemicals; may have poor stability under high-temperature or high-shear conditions, leading to fluctuating defoaming performance. These pain points directly impact production continuity and final product quality.

Addressing these core needs, Chemi Tech leverages deep technical expertise to develop a series of high-efficiency papermaking defoamers. Our solution is not merely about supplying a product but begins with systematic on-site diagnosis. First, our technical team conducts an in-depth analysis of the specific production stage where foam occurs, key parameters like stock composition, pH, and temperature, to accurately identify the root cause. Subsequently, based on the analysis, we select the most suitable defoamer type from our water-based, oil-based, or compound series, ensuring perfect compatibility with your process system.

The implementation steps are clear and structured: Step one involves laboratory trials, simulating production conditions to evaluate defoaming speed and foam inhibition duration, establishing a preliminary dosage. Step two is a pilot run, introducing the defoamer at a low flow rate at specific points on the production line, observing real-time foam control effectiveness and its impact on paper quality, and optimizing the addition point and dosage. Step three is full-scale implementation and stable operation, supported by continuous technical follow-up to ensure long-term, consistent performance of the defoamer, with fine-tuning based on production variations.

We served a cultural paper manufacturer located in East China. The company faced severe foam in the coating process, resulting in pinholing and uneven gloss on the coating. Through our on-site diagnosis and laboratory matching, we recommended a coating defoamer with excellent high-shear stability. By precisely controlling the dosage during the pilot phase, the foam was rapidly and persistently suppressed. The coating surface quality improved significantly, with pinholing largely eliminated. Importantly, there was no negative impact on coating viscosity or binding strength. The customer expressed satisfaction with the final paper's smoothness and printability.

Choosing Chemi Tech means you receive not only an efficient defoamer but a complete support system encompassing problem diagnosis, product selection, and application optimization. We are committed to helping paper manufacturers stabilize processes, enhance quality, reduce costs, and achieve smoother, more efficient production operations.