Pulping, papermaking and coating are the three core processes in paper production. The foam problem has long constrained the quality and production efficiency of paper products. With the continuous expansion of domestic recycled paper production capacity and the continuous improvement of water recycling utilization rate, the foaming substances such as lignin, starch and surfactants in the pulp system have been continuously accumulating. Under the high shear conditions of high-speed paper machines, a large amount of fine and stubborn foam is easily generated, causing problems such as pinholes, holes, poor uniformity, coating blemishes, and broken paper on the paper surface, seriously reducing the yield of finished products. The special papermaking anti-foaming silicone oil, with its comprehensive advantages of efficient foaming elimination, long-lasting foam inhibition and no damage to the paper quality, has become an indispensable functional additive in modern paper production lines.
Traditional mineral oil and polyether-based anti-foaming agents have obvious performance shortcomings. Either the foaming elimination speed is slow and they cannot adapt to high-speed continuous production, or they have poor compatibility with the pulp system, easily causing paper surface stickiness, color difference, uneven coloring, and even reducing the paper tensile strength and folding strength. At the same time, they also affect subsequent processing techniques such as printing, coating, and gluing. However, the modified organic silicone anti-foaming silicone oil has extremely low surface tension, fast foaming elimination speed, long-lasting foam inhibition period, and can eliminate large and small foam with a small amount of addition. At the same time, it can effectively inhibit foam regeneration and is suitable for various pulp systems such as wood pulp, bamboo pulp, waste paper pulp, and mixed pulp.
This anti-foaming silicone oil is resistant to acid and alkali, high temperature, and high shear. It can adapt to the complex and variable water quality and working conditions of the papermaking workshop and operate stably in a closed water circulation system for a long time without demulsification, precipitation, or stratification, ensuring the continuous and stable operation of the production line. Different from traditional additives, the organic silicone anti-foaming silicone oil has extremely strong chemical inertness and will not damage the fiber bonding force, does not affect the core physical indicators such as paper stiffness, tensile strength, and folding strength, does not interfere with key processes such as sizing, color matching, and coating dispersion, and can avoid various secondary quality defects from the source.
The product application covers all types of paper such as household paper, cultural paper, coated white card paper, special process paper, and industrial card paper. It can not only solve the foam problem in the pulping process but also eliminate the foam defects in the coating process, effectively improving the paper surface flatness, glossiness, and uniformity. At the same time, the low-ring body environmental-friendly formula complies with VOC reduction and clean production policy requirements, is green and safe, and has no residue.
In 2026, the proportion of recycled paper production capacity continues to increase, and the popularization of closed water circulation makes foam treatment more difficult. The demand for efficient and environmentally friendly anti-foaming silicone oil is rapidly increasing. The domestic IOTA papermaking anti-foaming silicone oil is suitable for all working conditions of the production line, has outstanding cost performance, and has become the mainstream choice of leading paper enterprises. With the acceleration of the upgrading of paper products towards high-end, anti-foaming silicone oil will continue to replace traditional inefficient additives and fully empower the papermaking industry to improve quality and reduce costs.