Flexible process for thin-walled and technical moulding

Injection compression moulding is a thermoplastic moulding process. It involves injecting the melt into a slightly open mould with simultaneous or subsequent compression. This is performed by the closing stroke of the machine or a coining core in the mould. The results is a lower cavity pressure when processing extremely thin-walled parts. The compression process also helps to minimise internal stress on moulded parts and improves dimensional accuracy; making it perfectly suitable for packaging applications or automotive parts, such as lighting applications.

  1. Closing of the tool up to coining gap
  2. Injection of the thermoplastic melt
  3. Coining of the injected melt via machine closing stroke or coining core
  4. Cooling and demoulding
  1. Improved dimensional stability and moulding accuracy
  2. More even cavity pressure distribution over the part surface
  3. Lower internal stresses, which lead to improved part quality
  4. Reduced scrap rates due to improved part quality and consistency
  5. Ability to use lower-viscosity materials
  6. Protection of inserts and decorations during the moulding process
  7. Lower injection pressure requirements
  1. Thin-walled packaging parts
  2. Optical applications (e.g. lenses, diffusing lenses, headlights, displays)
  3. Long-fibre reinforced moulded parts (e.g. door modules, underbody protection)
  4. Decorated components (e.g. decorative panels, side panels, mobile phone cases)
  5. Components with surface structures (e.g. fresnel structures, lotus surfaces)
  6. Foamed components (e.g. insulation components, lightweight construction)