Abstract: A process is proposed for producing a bipolar plate for an electrochemical device, said process comprising providing a first main plate body and a second main plate body as fibrous shaped bodies including carbon fibers and each having a joining face and an opposing useful face, infiltrating the main plate bodies with at least one carbon allotrope, locally applying silicon to respective joining sites in the joining faces, placing the joining faces against one another, such that the joining sites rest against one another and the useful faces of the two main plate bodies face away from one another, and at least locally heating the joining sites, such that the silicon melts and reacts with adjoining carbon to form a silicon-carbon bond.

Abstract: A standing container for pin-shaped writing or drawing instruments comprises a plurality of receiving elements pivotally connected with one another, each of the receiving elements being formed as a strip-shaped receptacle with at least two parallel rows of insertion openings and with a groove provided on its lower side and extending in a longitudinal direction, a spring element located in the groove and provided with a plurality of individual spring tongues are arranged to abut against a pin shaped element freely lying in the region of the groove, and connecting elements for connecting the receptacles with one another and including an extension formed at an upper side and at least one longitudinal end of each of the receptacles, a hinge piece extending between the longitudinal ends of two adjacent receptacles, and a pin connecting the hinge piece to the longitudinal end of each of the receptacles.

Abstract: An exposure device with a metal-halide lamp for the exposure of photosensitive materials in reprographics includes a circuit having a power source and an adjusting device in the circuit for adjusting the lamp between exposure operations at full power and a power level reduced for stand-by operation. The reduced power level is preselected as a function of predetermined properties of the photosensitive materials.

Abstract: The invention relates to semifinished material consisting of a thermoplastic polymer and a needled textile fabric made up of at least two layers of oriented continuous filament yarn, each having an areal mass of not more than 300 g/m.sup.2, and at least one layer of unoriented fibers.

Abstract: Semifinished material consisting of symmetrically-needled glass-fiber mat impregnated with a thermoplastic polymer. The glass mat can be made by, for instance, needling continuous filament web from above and below at the same time with a double needling machine.

Abstract: An improved process for the production of polyamide mouldings by activated, anionic polymerisation of lactams having at least five ring members by means of screw injection-moulding machines and screw extruders, the improvement comprises polymerising the lactam melt containing an activator and a catalyst partially in a stirrer unit up to a relative viscosity of at least 1.4 measured at 25.degree. C on a 1% by weight solution of the polyamide in cresol.

Abstract: Semifinished material consisting of symmetrically-needled glass-fiber mat impregnated with a thermoplastic polymer. The glass mat can be made by, for instance, needling continuous filament web from above and below at the same time with a double needling machine.