Multi-cavity injection moulding system

A multi-cavity injection molding apparatus comprising a back plate arrangement, a hot runner manifold arrangement and a cavity plate, said hot runner manifold arrangement comprising a first hot runner manifold having a first melt supply channel for a first plastic material and a second hot runner manifold having a second melt supply channel for a second plastic material wherein the first and second hot runner manifolds form manifold plates disposed substantially in parallel one behind the other between the cavity plate and the back plate arrangement and wherein the first hot runner manifold supports injection nozzles and is positioned in front of the second hot runner manifold, said first melt supply channel extending from a central first pour opening through said back plate arrangement as well as through the second hot runner manifold and into the first hot runner manifold, said first melt supply channel branching into first hot runners extending substantially horizontally therein and said hot runners and said second melt supply channel connected to respective melt bores of each injection nozzle.