Abstract: Apparatus for processing elsatomeric material, comprising two shafts mounted for rotation in a housing in end bearings and carrying therebetween two gear pairs in cavities in the housing. A channel connects the gear meshing side of the first gear pair with a space adjacent the second gear pair centrally opposite the gear meshing sides thereof. The elastomer is taken in through openings adjacent the first gear pair, and is pumped through two gear pumps connected in series, and discharged from the pressure side of the latter located at the gear meshing point thereof.

Abstract: A gear pump for injection molding and extrusion of elastomer material, where the material is inserted in strip form through slots into tooth spaces in a known manner. The gears have circumferential grooves in their mid portions, and a tongue is inserted into the groove in the region of gear engagement. Dividing-and-sealing members are fitted into the gear grooves at locations between the region of engagement and the insertion slots for the elastomer strips.