defoamer-antifoam

Mini-Encyclopedia of Papermaking Wet-End Chemistry Additives and Ingredients, their Composition, Functions, Strategies for Use ANTI-FOAM / DEFOAMER Composition: There is an extremely diverse set of chemical formulations that can be effective either to prevent foam (anti-foam) or to destroy it once it has formed (defoamer). Actually the distinction between these two terms is usually ignored. Most foam-fighting chemicals can serve either role. Let's therefore use the term "defoamer" as a general label for all of these chemicals. The most universal characteristic of any defoamer is the fact that it is surface active, but highly insoluble in water. It has to be formulated so that it will be dispersed as tiny droplets, i.e. as an emulsion. The surface-active nature of the material causes it to spread very rapidly onto any air-water interface that it encounters. This is especially the case if that interface already is covered by the types of surface-active materials...

China's paper industry production operation in 2019   Production completion from January to September 2019 According to the National Bureau of Statistics Express data, as of the end of September 2019, the number of pulp and paper and paper products companies was 6,641, a decrease of 31 from the same period last year. Among them: 46 pulp manufacturing industries, an increase of 3 over the same period last year; 2498 paper manufacturing industries, a decrease of 148 over the same period last year; 4097 paper product manufacturing industries, an increase of 114 over the same period last year. Cumulative production from January to September 2019: paper and paperboard 92.87 million tons, an increase of 4.21 million tons compared to the same period last year, an increase of 4.7%; pulp 9.68 million tons, a decrease of 850,000 tons compared to the same period last year, a decrease of 8.1%; Paper products were 52.17 million ton...

The overall concentration of China's paper industry is relatively low, and the individual paper market is relatively mature. China's paper industry was affected by the tightening of the second phase of the environmental protection policy. From 2010 to 2015, the paper industry eliminated a total of nearly 40 million tons of backward production capacity. The effect of the industry's de-capacity was initially revealed, and the growth rate of paper and board production and sales was released. Slowly, industry supply and demand entered a period of weak balance. Regional concentration is not much different from previous years According to the survey data of the China Paper Association, in 1118 provinces (autonomous regions and municipalities) in the eastern part of China, the paper and paperboard production accounted for 74.2% of the national paper and paperboard production; the central provinces accounted for 16.3% of the eight provinces (regions); The proportion of 12...