Black filter sponge, also known as filter sponge, blasting sponge, mesh sponge, or perforated sponge, is a polyurethane mesh sponge that uses blasting to remove membranes.
It has the advantages of a general mesh sponge, including minimal color changes, high porosity, good breathability, high compressive strength, and high elasticity; It can be used as a filter layer for air conditioners and air filters for vehicles, and is more commonly used in aquarium filters.

Density difference: Due to different materials, the density of polyurethane sponge is usually higher than that of ordinary sponge, so the elasticity and load-bearing capacity of polyurethane sponge are stronger.

The density and pore structure of polyurethane sponge make it have excellent thermal insulation performance, which can effectively prevent the conduction and loss of heat. In addition, due to its soft structure and good elasticity, polyurethane sponge can provide excellent cushioning effect. Polyurethane sponge has various characteristics such as elasticity, softness, shock absorption, water absorption, breathability, wear resistance, durability, chemical stability, plasticity, and environmental friendliness.

Polyurethane sponge is used in various fields such as packaging, furniture, car seats, electronic devices, as well as aerospace and rail vehicle interiors for cushioning and sealing. It also has good filtering performance and can filter particles and pollutants in the air, keeping indoor air fresh.