In a range of applications and processes, unwanted foam can cause vessels to overflow, interfere with processes and packaging, waste material and damage equipment.Defoamers can work by reducing or eliminateing the surface tension of the foaming liquid which prevent foam forming or break down exisiting foam and ensure that industrial processes run smoothly safely, and efficiently, without interruption or the need for expensive and time-consuming cleanup.


  • Defoamer is added after the liquid foam system formed, and enters the bubble film through the action of foam adsorption  and surface tension to make the film thinner. This quickly breaks the foam and lowers the liquid level.
  • Antifoam agent is a substance that can inhibit the formation of foam, and it is adsorbed on the foam together with the liquid foam, reducing the surface tension, making the foam film thin, damaged, and preventing foam phenomenon.
  • Air release agent is absorbed in the bubble of the liquid, gathering the air in the bubble. After the bubbles adsorb with each other, the adsorption interface is damaged to form a large bubble, then the buoyancy is increased, thus defoaming.


ANTIFOAM has always been customer-centric and based on realizing customer value, we provide customers with one-to-one customized solutions and provide products with competitive advantages. ANTIFOAM empowers its partners in all aspects and collaborates with them for win-win results.

  • Pulp and Paper
    Pulp and Paper
      In the pulping process, due to stirring, turbulence, oscillation, jet and other operations, a large number of foam will be generated, which will reduce the relative density of the pulp and the washing efficiency. In addition, the bubble makes the pulp pressure sharply reduced, resulting in the release of gas, which may cause the paper with holes, and then affect the subsequent process.   The silicone defoamer offered is specially designed for black liquor formed during the pulp process to control foam. Compared with the traditional defoaming agent, it has better durability and a small amount of addition can play an excellent defoaming and anti-foaming effect. In addition, it is widely used in pulp production to control foams by significantly reducing entrained air.     Foam is often generated through chemical interactions on the paper machine combined with the rapid motions involved in the paper-making process. Paper machines generating foam and entrained air adversely affect production rates and paper quality.  Our defoamers are used in paper machines to decrease the production of foam while manufacturing paper, with advanced features: No foam-related issue can be seen on the final paper quality.       Decreases environmental claims.       Tries best to improve drainage aid in the paper machine. Reduces the paper breakage   We offer a complete line of defoamers to effectively control foam in all pulp and paper processes, from pulp washing black liquid, paper machine white water, sizing, and coating to effluent treatment.   Pulp Washing Black Liquid - Silicone defoamer Paper-making White Water -  Fatty Alcohol defoamer & Polyether defoamer  Paper- making Sizing & Coating - Polyether defoamer & Mineral oil defoamer Paper- making Effluent Treatment - Silicone defoamer & Non-Silicone defoamer    
  • Textile Industry
    Textile Industry
    Textile industry includes textile dyeing, textile sizing, textile printing, textile auxiliaries, pre-treatment and after-finish.     Textile dyeing: Dyeing is a key process to make fabrics or fiber yarns produce color, and it is also a key process to enhance the value of textiles. Textiles can be dyed in all aspects of their production, that is, stock solution, loose fiber, tow, wool top (cotton sliver) , yarn, rope, fabric, garment dyeing.   Textile sizing: The sizing process refers to the treatment method of increasing the toughness and luster of the fabric by using special substances. It is an indispensable process in the textile processing process, and it is also an extremely complicated and critical process, which determines the weaving efficiency and product quality.When textile sizing, the appropriate sizing should be selected, while controlling the concentration, temperature, PH value and viscosity of the sizing to ensure uniform sizing of the yarn and not easy to break.   Textile printing: The process of limited dyeing on a predetermined area of fabric, including the preparation, development and setting of a color paste, and the addition of a thickener to firm the defined color paste to a predetermined area of the fabric.   Textile auxiliaries: Textile auxiliaries are necessary chemicals in the process of textile production and processing. They play an indispensable role in improving the product quality and added value of textiles. They can not only endow textiles with various special functions and styles, such as softness , anti-wrinkle, anti-shrinkage,waterproof,antibacterial, antistatic, flame retardant, etc., can also improve the dyeing and finishing process, save energy and reduce processing costs.   Pre-treatment an after-finish: The purpose of pre-treatment is to apply chemical and physical mechanical action to remove impurities on textiles, making them white, soft, and have good permeability, so as to meet production requirements and provide dyeing, printing, and finishing Qualified semi-finished products. After-finish refers to the physical, chemical or physical and chemical methods to improve fabric feel and appearance (such as stiff finishing, soft finishing, calendering or napping, etc.),improve the quality of the fabric and give the fabric new functions (such as anti-wrinkle, waterproof, anti-fouling, anti-corrosion, anti-mildew, anti-moth and anti-bacteria, etc.).     In the textile process, in order to meet the requirements of textile processing, many additives and dyes are often added, and these additives and dyes will produce a large amount of foam after mechanical vibration, temperature and other changes in the production process, affecting the quality of textiles.   The function and advantage of defoamers In the textile industry, we often use silicone defoamers or non-silicon defoamers with high temperature and alkali resistance and stable chemical properties to effectively ...
  • Water Treatment
    Water Treatment
    Water is the source of life and nurtures all living things on Earth. With the continuous development of human society and industrial modernization, the quality of water and the environment of water resources are becoming worse and worse. So many industries will treat water to protect water resources. The foam produced in the water treatment process will seriously affect the quality of water and the ecological environment. It will also reduce the efficiency of water treatment and increase the cost.   Municipal Sewage Treatment and Industrial Sewage Treatment  Whether municipal sewage or industrial sewage, there are a lot of polluting substances. The formation of foam in the treatment process will affect the ecological environment and the effect of water treatment. It may even harm your health.  Using defoamer can effectively eliminate the foam in sewage and improve the efficiency and quality of sewage treatment.   Industrial Circulating Water Treatment The use of defoamer in circulating water treatment can effectively help the stability of circulating water, not only improve the efficiency of water treatment but also save costs.   Biological Water Treatment Biochemical water treatment refers to the biochemical treatment of sewage to obtain water that meets discharge standards. In the process of treatment, the generation of foam will affect the progress and process of biochemical water treatment. It also leads to lower efficiency and higher costs.   Reverse Osmosis Water Treatment Due to the addition of additives and the operation of the machine, a lot of foam will be produced in the reverse osmosis water treatment process. To a certain extent, it affects the equipment, manpower and cost. It also reduces the efficiency of water treatment.   Landfill Leachate Garbage osmosis will be produced during the process of garbage accumulation. Its water quality is complex, containing a variety of toxic and harmful substances. It makes it more difficult to deal with. These problems can be easily solved with the use of the relevant defoamer. It can not only protect the environment, but also save costs.   Sea Water Desalination In order to save water resources, many industries in coastal cities will choose seawater desalination as industrial water to improve the utilization rate of water resources.   Main advantages 1. Non-toxic and harmless 2. Fast defoaming performance 3. Good dispersion in water 4. No suspended matter after dilution   Nanjing ANTIFOAM can provide you with better defoamer and better service to help customers solve foam problems. Please contact us anytime if you need.
  • Construction and Building
    Construction and Building
    The causes of foam formation: 1. The pigment filler in the paint has a large specific surface area. When it is added in the production of paint, it can absorb air into the paint to produce foam; 2. Coating in the production and application process, due to the addition of various surface-active substances, such as emulsifier, dispersant, wetting agent, thickener, etc., it is easy to produce foam during production and construction; 3. Due to mixing, dispersion, grinding, construction, etc., through the air intervention system, it is easy to form foam; 4. Due to some side reactions, carbon dioxide is produced and then foam appears.   Mechanism of defoamer The defoamer must combine with a stable surfactant layer. Then it penetrates into the double tube membrane of the foam film. It spreads out upon contacting with the bubble to form an thin double film layer. Thus, the spread and intrusion of further defoamer replace the membrane wall of the original foam. Since liquids with low surface tension always flow to liquids with high surface tension. Thus, the surface tension of the defoamer is lower than that of the bubble solution. The defoamer molecules attached to the foam surface reduce the local surface tension of the foam surface, but the rest of the membrane surface still maintains a large surface tension. There is a difference in the surface gravity of liquid film. This difference gives rise to parts with a stronger pull and parts with a weaker pull. It will cause stress imbalance throughout the bubble, causing the bubble to burst. The defoaming mechanism of the defoamer shows in the figure above.   Advantages of ANTIFOAM's antifoam agent: Advantage 1  In cement mortar system, water-based ink paint, steel and other materials, dispersion is better, can solve most stubborn foam Advantage 2 Only need to add a small amount to achieve rapid defoaming, and has a lasting foam suppression performance Advantage 3 High quality, variety, accurate positioning according to customers' products Advantage 4 Low defect rate, after addition will not affect the appearance of the product    
  • Water-based Coatings and Inks
    Water-based Coatings and Inks
      Water-based coatings and water-based inks are a new type of environmentally friendly products relative to traditional products. The principle is to replace the diluent in traditional products with water.   Water-based coating refers to the coating with water as the main dispersion medium. According to the dispersion state of the resin in water, it is usually divided into three types: water-soluble paint, water-diluted paint, and water-dispersible paint (latex paint). Water-based coating uses water as the solvent, which saves a lot of resources and has good adaptability to the material surface, but requires high cleanliness of the material surface. The application range of water-based coatings involves various fields of national economic construction, such as water-based architectural coatings, water-based automotive coatings, water-based metal anti-corrosion coatings and water-based wood coatings. Water-based inks and water-based coatings have many common raw materials, such as additives, resins, pigments, etc. Water-based inks are relatively safe and environmentally friendly, and are commonly used in tobacco, alcohol, food, beverages, and children’s toys. It has low adhesion, lacks gloss and dries slowly.   The low volatile organic compounds (VOCs) content of water-based coatings and inks makes them safer and more environmentally friendly for both production operators and users. However, as a composite emulsion, water-based coatings and water-based inks are easily affected by the process and the internal gas is mixed, because it is a viscous system, the gas can not be precipitated, resulting in the emergence of foam.   The function and advantage of defoamers In the production process of water-based coatings and water-based inks, mineral oil defoamer, silicone defoamer or synthetic non-silicone defoamer can be added according to the product needs, and the low molecular substance that can be fully mixed with the solution can be used to make the surfactant solubilized and reduce its effective concentration. It has the advantages of safety and harmless, strong defoaming ability, good applicability and compatibility and will not affect the basic nature of the foaming system.   Causes of foam: 1.The influence of surfactants such as additives 2.The process of grinding the color paste 3.Paint mixing process 4.Viscous system of paint and ink   Adverse reactions that can be avoided by using defoamer: 1.Avoid the extension of production time, the reduction of production efficiency and the  increase of cost 2.Avoid foaming during filling and cause uneven quality of each barrel 3.Avoid the reduction of the adhesion of paint and ink to the substrate 4.Avoid appearance defects such as pinholes and fish eyes    
  • Oil and Gas
    Oil and Gas
    In the oil industry, from the extraction of crude oil to all kinds of processing, these processes will be accompanied by a lot of harmful foam. Foam existence has a great impact on the quality and output of oil products, equipment operation efficiency, transportation and so on. ANTIFOAM ensures that every process runs efficiently and smoothly. - Oil-gas Separation - Oil Drilling - Refining - Delayed Coking - Asphalt Production & Transportation - Cementing - Fracturing fluid  
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