HEPA FILTER USING MULTI-LAYERED MICROSCOPIC FABRIC BY CONTROLLING THE FIBER ORIENTATION FOR ALLERGIN PROTECTION

摘要

PURPOSE: A HEPA filter using multi-layered microscopic fabric by controlling the fiber orientation for allergin protection is provided. CONSTITUTION: The HEPA filter comprises a first layer(5), serving as a cover part, which performs the function of pre filter and maintains the shape of filter; a second layer(6) which filters common dust and is composed of micro fiber, inclined to an angle of 0 degree, having pores of 100 micron; a third layer(8) which filters minute dust and is composed of micro fiber, inclined to an angle of 30 degree, having pores of 10 micron; a fourth layer(10) which filters minute dust with the size below 0.3 micron or allergin and is composed of micro fiber, inclined to an angle of 60 degree, having pores of 1 micron.