PLEATED FILTER

摘要

A cylindrical pleated filter of charged layer membrane filter material is constructed with minimized filter occlusion and surface area where the filter diameter a number of filter pleats and pleat width results in the outer pleat apex included angle of each pleat being at least 10 degrees. Other embodiments and the relationship between filter occlusion and performance of a cylindrical pleated filter of charged layer membrane filter material and filter diameter number of filter pleats and pleat width is part of this disclosure.