| 摘要 |
The separator plate is made as a single part; it is produced by assembling two thermoplastic films (18, 19), having a joint-face configuration, between which are interposed two thermoplastic perforated structures, for example polyethylene grids, these structures being intended for covering the central recess of the plate for the first structure and the two diffusers for the second structure. According to the invention, prior to assembly, the perforated first structure (2) undergoes flattening by hot compression over its entire surface, except for the central recess. This flattening reduces the thickness (h) of the perforated structure, preferably by more than 50%. …<??>Cut-outs are made in the first structure thus flattened and into the locations of the cut-outs are placed portions of the perforated second structure, the lateral strips of which are flattened, serving as fastening during the assembling. …<IMAGE>… |
