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China defoamer manufacturer



INVELYCHEM is focus on defoamers in China with full range of industries over 10 years, as ANTIFOAMS producer,Invelychem offers a great alternative choice to customer globally. In 2019, we expand our capacity up to 18,000tons/year
because of the rapid growth of our  business.
Silicone based defoamers : 8000Tons/Year
Fatty Alcohol based defoamers: 6000Tons/Year
Mineral Oil based defoamers: 1000Tons/Year
Polyether based defoamers: 3000Tons/Year.
Our philosophy is refreshingly simple. To produce the best products in the market and support this with an outstanding technical sales and customer support team. 
Chinese Leaders in Foam Control Solutions—Serving global market with our profession
for more info: https://www.ywlchemical.com/


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How to control foam and defoaming in the papermaking ?

Foam is always a thorny issue in the pulp&paper industry. Foaming reasons   Once liquid which contain a surfactant or this kind of liquid having a large viscosity is agitated, a large amount of foam which is not easily disappeared is often produced. The reasons why these bubbles are more stable and not easy to disappear are as follows: n   Film elasticity The ability of the liquid film to resist local thinning during the general thinning process is film elasticity. When the liquid film has a thin point, this point is a possible breakage. However, when this is further stretched, the surfactant molecules in this part will be more reduced, and the increase in surface tension will result in a force imbalance, and the surrounding surface will be moved toward a thin point to balance the surface. tension. The movement of the surface layer pulls the liquid of the lower layer together, thus preventing further thinning of the initial weakness and, in turn, foam ruptu...
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Defoamer Test Method

Defoamer testing methods are divided into dynamic defoaming and static defoaming tests. If your foaming environment is different, the recommended test methods are different. There are three main types of foam experiments to characterize the activity of defoamers. Persistence. As we have different experimental conditions in different laboratories and the experiments used in our research to obtain results from existing literature, we will introduce these experiments below. Other methods are sometimes used depending on the particular application. 1． Ross-Miles Foam Tester   Features: Tested for strong foaming environments. This experiment is widely used for characterization        (1) Foaming of surfactant solution        (2) Research and application of foam stability in the presence of defoamer In the foaming system, the defoaming performance test was carried out by circulating bubbling by a Ros...
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How to add defoamer in the production and when add?

Defoamer-the main function is to eliminate foam to inhibit foam regeneration. Defoamer can be widely used in all walks of life, but the body is small but the effect is fine. However, for those who do not know much about it and the first use of defoamers, there is a problem that bothers them, and when is the defoamer added? Is it added before use or when it comes to foam? Ok, Now Let's learn when and how to add defoamer. (The picture shows a serious foaming site) Most workers who use defoamers add defoamers when they produce foam. In fact, not only can you join when you are bubbling! We will use silicone defoamers as an example. Silicone defoamers have four conventional methods of addition: 1. Adding before foaming: This method can suppress the production of foam by previously adding an antifoaming agent to a system which may generate foam. For closed containers and devices, defoamers are effective in eliminating foam. 2. Continuous dropwise addition: When the foaming ...
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