Polyshot Corporation has developed its own in-house technology to join manifold plates for state-of-the-art hot runner construction. This technology allows Polyshot Corporation’s engineers to design manifold flow passages based on the best conditions for the part being molded without the serious limitations of gun drilling flow passages.

Manifold plate fusion completely eliminates the use of end plugs and the mismatch they cause in the material flow paths. Instead of being restricted to flow paths drilled in straight paths in prehard manifold blocks, the plate fusing process allows Polyshot to machine curved free flowing configurations into hardened H-13 manifolds.

Below is a flow path extraction from one half of a two shot hot runner manifold system which Polyshot manufactured for a Japanese automotive manufacturer. Of particular note is the area of the flow path highlighted in green. This particular geometry was created to reduce injection pressure on the center row of nozzles and is typical with Polyshot manifold construction.

Polyshot Corporation’s engineering manager, Mr. Gilbert Chan, recently had an article featured in Moldmaking Technology Magazine that goes into detail relative to this hot runner construction process. You can read it by clicking here.