| 摘要 |
The separator comprises a plurality of longitudinal channels and ribs. The ribs are hollow and closely spaced apart with center distance less than 12 mm. Both the channels (C1, C2, ...) and most of the ribs (N3, N4,...) have longitudinal hollow projections respectively protruding on the two opposite sides of the separator. The ribs and projections contribute to define the bearing planes or faces of the separator, improve the characteristics thereof of longitudinal and transverse rigidity and assure a constant spacing between the plates when assembled therebetween owing to the increased number of contact points or locations therewith. The distribution of projections on a separator is sufficiently different from that of a plurality of separators intended to be superimposed or stacked to one another, no projection of one of such separators can nest in a cavity of another separator an the extraction of any separator from the pack can be readily carried out. In a continuous production process, the separators are obtained from a strip of material which in case is preheated, then drawn by means of two rollers and finally cut to measure. The strip may be fed from a roll or from a strip forming system, and particularly from a sintering furnace when using thermoplastic powders. |
