How to distinguish the quality of high density Shanghai sponge? Shanghai Guangtao sponge feels that it can be judged by two technical indicators of high density sponge.

Two technical indexes of high density Shanghai sponge: density and rebound index.

1. Elasticity and Comfort Sponge

A bad sponge is either sitting on it and sinking into the sofa, or it's like sitting on wood without elasticity.

Test method: Press down hard with your fists, don't buy anything that doesn't sink in at all. The jargon calls the sitting feeling very dead. This kind of sitting for 10 minutes makes your buttocks ache. The density of the sponge is not equal to the hardness.

Do not buy a sponge with a delay of several seconds (unless it is a memory sponge). The elasticity of the sponge is too poor. It is usually powder-added (mixed with stone powder can not be hard). This kind of sponge will be depressed in less than a year. The good sponge has enough density, pure raw material, 0 seconds rebound, and enough elasticity.

2. Use a good sponge

A good sponge has good elasticity, quick recovery and good toughness. It can be used for more than 5 years. Poor sponge, poor elasticity, slow recovery, less than half a year to collapse, deformation!

3, environmental protection

The new sponges give off a certain taste, generally ventilated for about 2 to 5 days, the taste naturally dispersed, some small factories produced sponges using inferior raw materials, the taste can not disperse in January. Although the odor of sponge is not toxic, but a long time must be harmful to the body, special attention!

4. Use regenerated cotton

Recycled sponge is made of waste crushed sponge compressed by glue, so it is basically colorful. Although it has high hardness and small deformation rate, it is a healthy killer. Because the source of waste sponge is uncertain, this kind of sponge is generally used in industry, and some manufacturers use it in the interior of sofa where can not be seen, in order to reduce costs.