About sponge: sponge is a kind of porous material with good water absorption and can be used for cleaning articles. The sponge commonly used by people is made of wood cellulose fiber or foamed plastic made of polymer. In addition, there are natural sponges made of sponge, most of which are used for body cleaning or painting. In addition, there are three types of synthetic sponges made of other materials, which are respectively low density polyether(Non-absorbent sponge), polyvinyl alcohol(Super absorbent material, no obvious pores) and polyester.

Production process foaming resin, blowing promoter and adhesive resin (making the finished product have adhesion) is mixed together; Foaming processing is carried out. 80 parts of ethylene vinyl acetate (EVA), 20 parts of APAO PT 3385, 20 parts of azodicarbonamide, l9 parts of CaCO and 0.6 parts of dicumyl peroxide are mixed together and foamed in a mold, foam sponge can be made by breaking the closed hole with mechanical force. Its density (d) is 0.028 g/cm ,25% compression hardness1.9 KPa.

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