Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby

摘要: A composite filtration medium web of fibers containing a controlled dispersion mixture sub-micron and greater than diameter polymeric is described. The made by two dimensional array cells, each which produces single high velocity two-phase solids-gas jet discontinuous entrained in air. cells are arranged so that the individual jets induced to collide flight with neighboring their region fiber formation, cause nascent adjacent deform become entangled partially wrap around other at localized fine scale manner before they have had an opportunity cool relatively rigid state. individually adjusted control mean diameters, lengths trajectories produce. Certain generate significant percentage having diameters less one micron diameter, shorter length certain structure-forming reinforcing longer length. By employing appropriate close positioning orientation array, caused promptly entangle larger fibers. thereby trap immobilize minimize tendency clump, agglomerate, or rope together flight. Also, form protective curtain prevent from being carried off stray air currents.