Abstract: The invention relates to a casting device for applying a foaming reaction mixture, to at least a partial width of a cover layer, wherein the casting device comprises: a supply connection for feeding in the reaction mixture; at least one exit slit extending in a transverse direction for the exiting of the reaction mixture; two slit plates arranged opposite one another, wherein a slit space extends between the slit plates in a vertical direction above the exit slit. A supply channel connected to the supply connection is formed between the slit plates, which closes off the slit space above the exit slit in the vertical direction The supply channel has a channel cross-section, the main dimension of which is larger that the width of the slit space. The reaction mixture can be introduced into the slit space to distribute the reaction mixture over the length of the supply channel.

Abstract: The invention relates to a device for machine-based processing of rapid polymeric reaction systems, particularly polyurethane systems, wherein a rapid formula change is possible with simultaneously low raw material consumption. The device according to the invention further requires little space, allowing for operation in a standing flue, for example.

Abstract: A straight-arm paddle agitator is described for processing viscous reaction mixtures in vessels with a low filling level. The straight-arm paddle agitator is made from at least one shaft with a drive means for the rotation of the shaft and with an agitating beam fitted terminally to the shaft and is characterized in that the ends of the agitating beam are each provided with a helical segment which is positioned at an angle of 25° to 65°, preferably 30° to 60°, in relation to the shaft axis.