Abstract: Hydraulic press including a frame with platens, at least one of which is carried or formed by a pressure plate structure adapted for transferring pressing force to an object between the platens, which press is adapted such that the pressure plate structure is substantially carried solely by horizontally adjustable supports mounted between the defining outer edges of such plate structure, such supports being positionally adjustable such that the surface of the corresponding platen assumes a predetermined shape during the pressing operation. The press suitably includes a mechanical mechanism for effecting the horizontal displacement in order to gain the desired positional adjustment of the supports.

Abstract: A machine for treating or processing, e.g. injection moulding or extruding, plastic material which is available in packaged form said machine comprising, in a manner known per se, an extrusion nozzle (7, 9) and a feed channel (23) connected thereto, is combined with a device (31) for emptying the packages into said feed channel by deformation of the package (71). Before the emptying exit openings may be provided in the packaging material by means of special perforating members (93 to 97). The deformation and the emptying of the package takes place in a cylinder (47) by means of a piston (45) fitting therein and driven by means of pressurized fluid.