Now that foam is constantly appearing in our lives, everyone must be familiar with it, but do you know it? So what are the relevant introductions about foam? The details are as follows:

Foam is foamed with polyether, like foamed bread. It can be foamed by mechanical equipment or artificially surrounded by wooden boards. The foamed cotton is like a big square bread. Use a slicing machine to go through the slicing process, and cut the thickness according to different requirements. The hardness of the foamed cotton can also be adjusted. . The seat cotton is generally 25~28kg/m3, and the other density is 20~22kg/m3. Although there is a direct relationship between the hardness and density of sponge, it is also related to different additive formulas, so the industry is divided into high elasticity, gray ultra, black gray ultra, and soft cotton. When designing and using products, reasonable and scientific matching should be carried out according to different shapes and structures. Generally, the upper, middle and lower parts are matched with sponges of different elasticity and density. There is a kind of fireproof cotton material (flame retardant cotton) in the sponge. In fact, before the sponge is foamed, a fireproof agent is added to the material formula, such as chlorine and bromine, so that when the sponge catches fire, it can generate fire-fighting smoke. burning effect.