Composite filter material for heat-setting-free pleated filter cartridge and processing method of composite filter material

The invention discloses a composite filter material for a heat-setting-free pleated filter cartridge and a processing method of the composite filter material. The composite filter material is prepared by taking paper made of plant fibers, synthetic fibers and glass fibers as a base material, and compounding the base material and a polypropylene (PP) or polytetrafluoroethylene (PTFE) synthetic fiber filter film by adopting hot melt adhesive, liquid glue or an ultrasonic composite method. The paper made of the plant fibers, synthetic fiber materials and glass fibers serves as the base material, and the prepared material is a novel composite filter material which is low in airflow resistance, high in tensile strength, diversified in varieties, convenient to fold, wide in application range and excellent in overall performance.