| 摘要 |
The present invention is to provide a filter including polyvinylidene fluoride nanofibers having a multi fiber-diameter group on both sides of a substrate, and a manufacturing method thereof. The purpose of the present invention is to provide a filter manufactured by arranging two polyvinylidene fluoride nanofiber non-woven fabrics having different fiber-diameter in layers on both sides of a substrate, and a manufacturing method thereof. The filter of the present invention has two polyvinylidene fluoride nanofiber non-woven fabrics having different fiber-diameter on both sides of the substrate, thereby being capable of manufacturing the filter having high filtration efficiency, low pressure drop, and long life. Also, two nanofiber non-woven fabrics having different fiber-diameter can be manufactured by consecutive electrospinning, and efficiency of a process and mass-production of the filter are feasible. |
