Plastic saddle ring filler is similar to the saddle shape, such a filler layer mainly curved liquid passage, the voids within the packing layer than annular filler (especially compared to the Raschig ring packing) more continuous, primarily along the upward flow of gas can beThe arc channel flow. It has a large porosity, low pressure drop and mass transfer unit height, high flooding point, the proportion of small, full of vapor-liquid contact and mass transfer efficiency.