The utility model has the advantages of elasticity, and can be used as a material for shock proof, sealing, lining and elastic steel wire needle felt. Good adhesion, not easy to loose, can be cut into various shapes of parts. Good thermal insulation performance, can be used as thermal insulation materials. Compact, small pores, can be used as a good filter material. Good abrasion resistance, can be used as polishing material. It is elastic, so it is formed by the principle of felting. The size of the density and the different specifications can be used separately. Because the density of the felt is compact and stable, it can be used to produce all kinds of felt parts. The stretch of the felt is relatively good, can reach the specified length can be used for leather rolling belt, paper pulp suction tape. The utility model has the advantages of good thermal insulation property, and can be made into a felt insole with a specification.