In the production of printing inks and in high-speed printing processes, foam is a common yet troublesome problem. It not only causes inaccurate measurement of ink volume and leads to waste of raw materials, but also forms defects such as white spots, pinholes, or fish eyes on the surface of printed matter, seriously affecting the visual effect and commercial value of the printed product. Traditional physical defoaming methods often have limited effect, while adding chemical additives at will may damage the stability of the ink system and cause new problems such as cratering and poor wetting.
In response to these market pain points, drawing on deep experience in chemical R&D, Chemi Tech has developed a series of efficient and stable dedicated ink defoamers. The core of our solution lies in precise matching. Different printing methods (such as gravure, flexographic, and screen printing) and different ink systems (solvent-based, water-based, UV) generate foam with different characteristics, requiring targeted defoaming ingredients. Chemi Tech's technical team first conducts a detailed diagnosis of the customer's foam problem, analyzes its root cause, and then recommends the most suitable defoamer model.
Our specific application solution is clear and easy to follow. The first step is evaluation and selection: customers can provide an ink sample or describe the specific working conditions, and our laboratory will conduct matching tests. The second step is addition and dispersion: we provide clear recommended dosage ratios (usually 0.1%-0.5%) and guide customers to add the product at a suitable process stage (such as before grinding or during letdown) to ensure uniform dispersion. The third step is effect verification: by simulating actual printing conditions, we verify the defoaming speed, durability, and the impact on key ink properties such as gloss and adhesion, ensuring there are no side effects.
For example, a packaging printing company in East China, when using a certain water-based ink for high-speed printing, continuously generated a large amount of fine foam in the ink fountain, causing irregular white spots in the printed pattern. After adopting the silicone-modified defoamer recommended by Chemi Tech and adding it at a dosage of 0.3% during the ink preparation stage according to the guided process, the foam was quickly eliminated and did not regenerate for a long time. In the end, the surface uniformity of the printed matter was significantly improved, and the white spot problem was completely solved; at the same time, the ink's flow and transfer properties were not adversely affected at all, and the customer was highly satisfied with the printing yield and quality stability.
Choosing Chemi Tech means not only choosing a product, but also choosing a reliable technical partner. We are committed to helping printing and ink companies fundamentally control foam, reduce losses, and improve product quality and production efficiency. You are welcome to contact our technical team for targeted technical consultation and sample testing services.