Abstract: The packing belongs to the orderly arranged type and comprises packing units with sheets attached to each other. Each sheet consists of periodically repetitive formations of folded plates (13, 14) and the shape of the formations can be defined by the form of the upper and lower intersection line (profile) of the plates with upper and lower planes defined by the repective sides (1, 10) of the sheets. This form is symmetrical and it is similar to the letter "W" and has uneven arms (3, 2 or 4, 5), and the intersection line of a formation with the first of these planes is congruent with the intersection of the same formation with the other plane but these intersection lines are laterally offset with respect to each other by a half period.

Abstract: The packing of a tower or column for heat exchange, material exchange, contacting of two fluids with one another and chemical reaction consisting of a stack of elongated members having two walls inclined to one another and joined at a third wall, the first two walls being each formed with elongated vibratile elements interdigitated with vibratile elements of another packing member so that when the body of packing is traversed by one or more fluids, the vibratile elements are set into vibration.