Paper is more common in daily life is a kind of goods, small to read, read the newspaper, large to agriculture, industry and military production, are inseparable from the paper. There are many links in the paper making process, and a little carelessness in each link will lead to the emergence of foaming problems. Foam is constantly produced, will not only affect the efficiency of papermaking, to a certain extent, will also affect the quality of paper. Therefore, in the process of papermaking manufacturers will also be used to paper defoamer to defoam, foam inhibition treatment.
In the papermaking process will be added to many chemical additives, part of the surface activity of chemical additives is very strong, in the mixing, rinsing process will act as a foaming material to produce a large number of bubbles. In addition, fibres, fatty acids and other substances attached to the foam surface also increase the stability of the foam. In the process of paper copying, rosin gum is also added, which is prone to saponification reaction, thus generating a lot of foam.
To eliminate the stubborn foam, the choice to use defoamer is certainly the most effective and direct method. Paper defoamer is mainly a silicone polyether as raw materials, after a special process made of a variety of defoamer manufacturers are easy to foam for each link have developed a corresponding defoamer.
Paper defoamer have the following characteristics: 1, Easy to disperse, easily soluble in water, there will be no precipitate; 2, Will not affect the paper colour, thickness and other basic properties; 3, Will not affect the use of other chemical additives; 4、Environmentally friendly and non-polluting, will not endanger human life and health. 5, Fast and thorough defoaming, there will be no small foam residue; 6, Long foam inhibition time, there will be no secondary foaming problems; 7, High temperature resistance, strong acid and alkali resistance; 8, Stable chemical properties, not easy to react with the foaming medium;
