Nonwoven Filter Material

Nonwoven filter material is a kind of fiber filter material. It is based on fibers that form a network of fibers in a certain way. After a certain reinforcement treatment, a fiber filter material with certain strength and stability is formed. Nonwoven Filter Fabric mainly rely on the special structure of nonwovens. Compared with traditional textiles, non woven fabrics are completely separated from stretching, roving, spinning, winding, warping, sizing, weaving and other processes in the production process. It only retains the spinning process before loosening and combing. Therefore, nonwoven fabrics have the characteristics of short production process, high degree of automation, high production efficiency, low production cost and many kinds of fiber raw materials.

According to the molding method, it can be divided into needle - punched filter material, spunlace filter material, spunbond filter material, melt - blown filter material and wet filter paper. Different processing methods determine that the performance of nonwoven filter materials varies greatly, especially the filtration efficiency.

The perforated filter material generally refers to combing the non woven filter material into a net, and then perforating it for reinforcement. The pore size is much smaller compared to woven filter materials, but slightly larger compared to other similar nonwoven materials. In addition, it has the advantages of high porosity, uniform pore size distribution, and good air permeability.
Spunlace filter material generally refers to a non woven filter material formed by combing fiber raw materials into a net and reinforced by spunlace. It has the advantages of smooth surface, high strength, small pore size, good air permeability, good dimensional stability, no lint, and long service life.

Spunbond filter material is a non woven filter material reinforced by extrusion melting, spinning and hot rolling of polymer chips. Its obvious disadvantage is poor grid uniformity.
Meltblown Filter Material is a three - dimensional randomly distributed non woven filter material composed of microfibers. It has the advantages of small pore size, uniform pore size distribution and large specific surface area, but also has the disadvantages of low strength and poor wear resistance.
Wet filter paper refers to paper Filter Cloth produced by wet papermaking technology. Wet - laid technology is an easy - to - process fiber raw material that is difficult to process by other nonwoven technologies, such as high - performance fibers and aramid fibers and glass fibers. Therefore, the wet filter material is resistant to high temperature, but the wet filter material has strong paper feel, low strength, easy deformation when wet, and uneven pore size distribution.