Finishing & Assemblies

Our injection molding solutions are specialized to produce prototypes and small series of plastic parts. The RPM's injection molding process for the standard prototype tool involves an aluminium tool with no heating and cooling lines, and manually operated slides cores. The molders manually load the mold inserts and unload the parts from the mold. So the cycle times are a little longer and the molders need to monitor the quality of the parts constantly. Our injection molding process also includes insert-molding and over-molding. 

Insert-molding and Over-molding

Insert-molding is a process where often metal inserts are loaded into the plastic injection mold where they are then over-molded with a thermoplastic resin to create a final component. once the plastic is cooled down the metal inserts are then fully integrated with the plastic parts.  There are many different types of inserts that can be placed into the injection mold. The metal bushings, electrical terminals and wires are few examples of them.

Over-molding is a process through which a single part is created using two or more different materials in combinations. After the total number of substrate parts are pre-molded, over-mold tool is assembled to the injection molding machine. Then the pre-molded substrate parts are placed into the mold where the final part is over-molded with a different thermoplastic resin.

RPM has been providing complicated insert-molded and over-molded prototype parts to automotive and medical industries.

RPM also offers low volume production runs.  

Our Injection Molding

  • Have in-house molding machines with press ranged from 55 tons to 400 tons.

  • Create high quality plastic molded parts (including overmold & insertmold).

Material we offer

  • All types of available plastic resins.

  • Accept any customer supplied materials.

Our Injection Molding Process Offers

  • High efficiency & effectiveness.

  • Detailed features & complex geometry.