China's sponge market is developing rapidly, and product output continues to expand.cellulose sponge factory National industrial policy encourages the furniture sponge industry to develop in the direction of high-tech products. According to the properties of polyurethane materials, sponges can be roughly divided into the following categories.

According to the characteristics of raw materials, sponge can be divided into the following categories

1. ordinary sponge (from 5 density to 50 density, commonly used colors are basically available, mainly used for packaging sponge, furniture sponge, inner cushion sponge. Usually used as a coil or sheet)

2. Fine construction sponge (without choosing any of the filler, the bubble hole is uniform, tensile strength, extensibility and other properties are more superior)

3. flame retardant sponge (white, black, gray and other density specifications, in line with the United States California CA117, BS5852 and other flame retardant standards)

4. mesh, filter sponge (also known as sandblasted sponge, various colors of coarse, medium, fine pore sponge)

5. Specialty sponges (polyester, polyether, conductive, antistatic, etc.)

6. hard sponge (medium hardness, super hard, various hardness)

7. high-density construction sponge (28d, 30d, 33d, 40d, 50d and other varieties)

8. slow rebound sponge (40D, 50D, 60D and other varieties)

9. Molding sponge (also known as molding sponge, mainly using a foam molding technology, density is generally between 50-120d, better elasticity).

10.Shaped sponge (the main products are sponge ball, sponge tube, bath car sponge and other deep processing sponge products)

11.PU hard sponge (the main products are used in imitation wood crafts, refrigerators, automobile industry, etc.). General density of 100-600 μm or more).