Usually, when the concentration of industrial dust reaches a certain level (i.e., the explosion limit), it is very easy to cause explosion and fire if it encounters factors such as static discharge sparks or ignition at the boundary. Such as flour dust, chemical dust, explosion dust, etc. If there is static discharge, there is a possibility of explosion. In the field of bag dust removal, if these dusts need to be collected by cloth bags, the cloth bags themselves are required to have anti-static function. In addition to the production of ordinary needle felt technology, the production of anti-static filter materials also requires the incorporation of conductive fiber yarns into the warp yarns of the base cloth of the needle felt.