On the paper machine line, foam is a silent troublemaker. It lurks in the stock, the white-water circulation, and the size press, and it not only causes paper defects such as pinholes and spots but also leads to poor drainage and frequent sheet breaks. All of these seriously slow down production and drive up energy consumption and costs. How to control foam stably and efficiently has therefore become a key challenge for many paper mills seeking to improve quality and profitability.
Facing these foam-control pain points head-on, Chemi Tech has drawn on its deep application experience to develop a series of high-performance defoamers for papermaking. Our solution is not simply about adding chemicals; it is a systematic service built on a thorough understanding of the entire papermaking process, spanning from diagnosis to continuous optimization.
Our core solution is delivered in three steps. First, our technical engineers conduct an on-site survey to pinpoint the exact source of the foam—whether it comes from the stock itself, from chemical reactions, or from system design. Second, based on the foam characteristics and process conditions, we select the matching Chemi Tech defoamer, which offers fast foam-breaking, long-lasting foam suppression, and resistance to high temperature and high shear, along with good system compatibility that does not affect pulp brightness or downstream processing. Third, we formulate a scientific dosing plan, determine the optimal addition point and dosage, and ensure long-term, stable defoaming through online monitoring and regular follow-up visits.
In practice, the value of a solution is best proven by real cases. A specialty cultural-paper producer in East China had long suffered from paper-surface defects and sheet breaks caused by foam in the drying section, with several unplanned shutdowns each month. After the Chemi Tech team intervened, it analyzed the white-water circulation system and recommended a dedicated silicone-compound defoamer, adding it at two points: the white-water tower and the headbox. After the adjustment, paper appearance improved markedly, the sheet-break rate dropped by more than 70%, and formation improved, while defoamer consumption was about 15% lower than the previous solution—achieving a win-win in both quality and cost.
Choosing Chemi Tech means choosing a reliable partner and a clear path to production improvement. With professional products and technology, we are committed to helping you remove foam obstacles, keep the paper machine running smoothly and efficiently, and ultimately win better products and stronger market returns. Contact us today for a defoaming solution tailored to your production line.