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Rubber Sponge Characteristic Diagram

Two structures based on application purpose

Rubber sponge can be divided into two types, called “open cell sponge” and “closed cell sponge.” Since each cell inside a sponge in either the open cell or closed cell structure functions to serve the application purpose, you need to be aware of the characteristics of both structures. In general, an open cell sponge excels in flexibility, water and noise absorptivity, and ventilation; a closed cell sponge has superior integrity, adiabaticity, shock absorbency, cushioning characteristics and water buoyancy.

(Yoshinobu Miyahara, Miyahara Rubber Industry Co., Ltd.)

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