The concentration of EVA foam refers to the content of EVA (ethylene vinyl acetate copolymer) in foam. The higher the concentration, the higher the hardness, elasticity, wear resistance and other properties of foam will be. Generally speaking, according to the use and performance requirements of foam, the concentration of EVA foam can be divided into three types: high concentration, medium concentration and low concentration.
High concentration EVA foam: The EVA content of high concentration EVA foam is generally more than 50%. The foam has high hardness, good elasticity, and strong wear resistance. It is suitable for insoles and other products requiring high support and durability.
Medium concentration EVA foam: The EVA content of medium concentration EVA foam is generally between 30% -50%. The foam has moderate hardness, certain elasticity and comfort, and is suitable for making ordinary insoles and other products.
Low concentration EVA foam: The EVA content of low concentration EVA foam is generally below 30%. The foam has lower hardness and is more soft and comfortable. It is suitable for making yoga mats, dance mats and other products that need high cushioning and comfort.
It should be noted that the concentration of EVA foam will also affect its processing performance and manufacturing cost. The processing of high concentration EVA foam is difficult and the manufacturing cost is relatively high. Therefore, when choosing EVA foam, it is necessary to consider comprehensively according to your own needs and actual conditions.