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Foam rubber products are produced by physical or chemical foaming method with rubber as the base material to obtain sponge-like rubber porous structure products. This technology has been widely used in various production industries, such as automobile door and window seals, cushioning pads, building construction gaskets, seismic materials, sports protection facilities, etc.

Generally speaking, rubber molded products must be molded through the corresponding mold for molding processing, a rubber product after high temperature, high pressure vulcanization, from the mold cavity or mold core is commonly known as mold release. Poor demolding is one of the important reasons for the quality defects of rubber products and the impact on production efficiency. It can cause defects such as distortion and tearing of parts, and some even damage the mold, bringing trouble to normal production. Studying the unfavorable factors affecting the demolding of rubber products is of great significance to ensure the quality of products, prevent defects, prevent scrap, and improve production efficiency.

Common quality problems and solutions in rubber foaming 1、Insufficient foaming holes 2. Insufficient filling mold 3. Uneven foaming holes (too big or too small) 4. over-vulcanization or under-vulcanization