| 摘要 |
<p>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. Adjacent ones of the sheets are attached to each other in such a way that an apex (C) defined by a pair of shorter arms (3, 4) of a sheet abuts an apex defined by the longer arms of the adjacent sheet, and the adjacent sheets abut each other alternatively and periodically at one or the other of their sides. The so attached sheets define periodical passage channels communicating laterally with each other, each channel has continuously varying cross section along the height, however, every pair of the channels have uniform combined cross section at every height.</p> |
