An experimental investigation of nonwoven filter cloth with and without reinforcement of woven fabric

In this experimental study, the effect of needling intensity and reinforcement fabric on some physical properties of needle‐punched nonwoven filters was investigated. The needle‐punched nonwoven filters with different needling intensities were fabricated with and without reinforcement fabrics. Recycled polyester fibers were chosen as raw materials, and acrylic fibers were used in the reinforcement fabrics. The variation of physical properties of filter fabrics, such as air permeability, thickness, mass per unit area, and bursting strength, was analyzed with respect to the needling intensities as well as the reinforcement materials. The results showed that the burst strength of the filters increased by using the reinforcement fabric and increasing the needling intensity until a critical level. Moreover, air permeability of filters decreased by using the woven reinforcement materials and increasing the needling intensity.