Injection Molding

Plastic injection molding is the most common process for production of plastic parts and products. In this process a plastic injection molding machine injects thermoplastic resins at high speed and high pressure into a steel mold.

Design Guidelines

When designing your injection molded part abide by the following guidelines where possible:

  • Keep wall thickness constant throughout the part.
  • Use a wall thickness not too thick or too thin for the kind of plastic material used.
  • Use rounded corners instead of sharp corners where possible.
  • Add draft to surfaces parallel to the direction of part ejection from the mold. This will ease part ejection.
  • Limit the use of undercuts to reduce the required number of slides or side cores in the mold.