Fiberglass needle punched felt can be divided into short cut fiber needle punched felt and continuous filament needle punched felt. Short cut fiber needle felt is made by cutting glass fiber rovings into 50mm short pieces, randomly laying them on a substrate pre placed on a conveyor belt, and then using a needle with a hook to needle them. The needle pierces the short cut fibers into the substrate, while the hook lifts some fibers up to form a three-dimensional structure. The substrate used can be a thin fabric made of glass fiber or other fibers, and this needle punched felt has a fuzzy feel. Its main applications include being used as insulation and sound insulation materials, thermal lining materials, filtering materials, and can also be used in the production of fiberglass, but the strength of the produced fiberglass is relatively low and its range of use is limited. Another type of continuous raw fiber needle punched felt is a felt in which continuous glass raw fibers are randomly thrown onto a continuous mesh belt using a wire throwing device, and then needle punched through a needle plate to form a three-dimensional structure of interconnected fibers.
This product adopts the method of high-temperature and high-pressure cleaning, which enhances the tensile strength of the filter fabric, makes the appearance soft, and has a highly swollen water increasing state. Its wear and tear resistance is more than 1.5-3 times higher than that of ordinary filter media, and its acid resistance is good. The temperature resistance can reach 280-295 ° C, with high dust removal efficiency and long service life. It is widely used in industries such as cement, steelmaking, and coking.