Siebec QPT ULD Bag Filters

The ULD felt is 30 to 70% thicker than standard felts while increasing the overall permeability (reduction of the initial pressure drop). This structure allows a wider spectrum of particles to be retained in the thickness of the felt: increased depth filtration for delayed clogging. The outer surface of the felt is flamed to prevent any release of fibers. ULD bags are particularly well adapted to the retention of gels and deformable gelatinous particles.