Aspects Regarding Accomplishing Multilayered Filtration Media, Using Electrospun Webs

Filtration media are widely used in industry in various forms for the filtration and removal of particles from fluids. Filtration media represented by the non-woven fibrous materials with the fibers disposed close enough to each other so the inter-fiber spacing or effective pore size to be small enough but in a sufficiently thick layer, able to trap the particles in a desired size range. The present work presents an improved multilayered filtration media that includes a self - supporting highly permeable substrate layer, textile type, which provides support structure for the media and has a low relative efficiency and low relative flow restriction, a thin, non-self - supporting, efficiency layer of fine fibers - electrospun polymer layer and a smooth, non-self - supporting protective cover layer of fibers which is self-adhering to the efficiency layer and adds negligible efficiency and flow restriction to the overall media.