Such fillers absorb the characteristics of short Raschig ring, but also changed the filler ring high with a diameter equal habits, reducing the height of the ring, and thinning the thickness of the material of the cuffs, and an increase in the side end of the ring.
Increase due to the side end of the ladder ring filler cuffs, not only can increase the mechanical strength of the filler ring, and, due to destruction of the symmetry of the structure of the filler, thus increasing the probability orientation when put the filler. Also, because the impact of the flange, making the filler in this linear contact the main contact between the filler annulus accumulation becomes a point contact. Thus, not only the increase in the gap between the filler particles, reducing the resistance of the gas through the layer of packing, and that these points of contact is also a flow of liquid along the surface of the filler convergence scattered point, thus contributing to the surface profile of the liquid film, is conducive the filler mass transfer efficiency to improve. Therefore, ladder ring packing performance compared with Pall rings, there has been further improved.