Cylindrical cartridge filter with improved filtering capacity

摘要

PURPOSE: Provided is a cylinder-shaped cartridge filter which is made of non-woven fabric and has improved filtering capability while maintaining intrinsic mechanical properties of a resin. CONSTITUTION: The cartridge filter is prepared in a cylinder form from synthetic resins through melting, forming and spinning processes by an extruder. During drawing when cylindrical filter is formed, prominences and depressions are formed on the surface of the filter through compression by a drawing road and shaping grooves provided on the shaping roller at prescribed intervals. The distance from the top of the prominence and the bottom of the depression is 1 to 10 mm and the repeating interval of the prominences and depressions is at least 5mm.