Foamed cotton this material is foamed with polyether, like foamed bread. Can use mechanical equipment foaming board can also be surrounded by artificial foam, the foam of cotton like a large square bread, the use of slicer after slicing process, according to different requirements cutting thickness, foam cotton can also adjust the hardness and softness. Generally, 25~28kg/m5 is used for cotton block, and 20~22kg/m3 is used for others.
Although there is a direct relationship between the hardness and density of sponge, but also with different additives formula, so the industry can be divided into high elasticity, grey super, black grey super, soft cotton. When the product is designed and used, it should be reasonably and scientifically matched according to different shapes and structures. Generally, it can be divided into three parts: upper part, middle part and lower part, which are equipped with sponges of different elasticity and density.
Sponge there is a kind of called fireproof cotton material, in fact, sponge foam before the addition of fire agents in the material formula, such as chlorine, bromine when the sponge fire can produce smoke extinguishing, fire retardant effect.
