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Ordinary foam mattress

How to distinguish adulterated sponges from pure sponges:

Look: The sponge process is mainly divided into two categories: foaming and PU. Doping makes the fake sponge foam uneven and the pores are large. The pure sponge pores are small and uniform;

touch:  pure sponge feels smooth and smooth, doping makes the fake sponge feel rough, very poor elasticity.

extrusion:seemingly the same thickness and hardness of the sponge, doping so that the fake sponge is easy to appear concave once squeezed, sit for a long time can not play up; pure sponge support strong, long-term extrusion is also difficult to deform;

the price:doping makes the fake sponge greatly reduce the cost due to the addition of stone powder, the price is low; the polyurethane material used in pure sponge is more expensive than the adulterated sponge;

life:adulterated sponge because of the addition of stone powder, hand rubbing, easy to slip down; pure sponge is durable;

Comparison of tensile strength between adulterated sponge and pure sponge:  the same sponge with the same appearance, the longer the tensile strength, the better the tensile strength.

Comparison of breaking strength between adulterated sponge and pure sponge:  the same sponge as the appearance, pure sponge can be loaded with strong strength