| 摘要 |
A method of manufacturing a fabric (56) for filtering particulate laden air needles at least one layer of batting (20) (e.g., fibrous material) with a layer of electrically conductive material, such as metallic foil (42), thereby entangling fibers of the batting (20) and shredding the metallic foil (42). In a preferred embodiment, a scrim (24), which is a grid made of cloth, and at least one layer of metallic foil (42) are sandwiched between two layers of batting (20, 50). In a needling process, a bed of barbed needles (55) are repeatedly and rapidly thrust into and pulled out of the layers, thereby entangling fibers of the bats (20, 50), both with each other and the scrim (24), and shredding the layer of metallic foil (42). The resulting fabric (56) has metallic filaments or fibers (62) substantially evenly dispersed therein. The fabric (56) is used for particulate collection on filters (66). |
