Reaction injection molding - description of the process

Reaction injection molding (RIM) mixes two or more components in a low-pressure process before being injected into a forming tool. At a low locking pressure, the reaction mass cures in a chemical process, via polymerization, inside the forming tool. In contrast to thermoplastics, once formed, thermosetting plastics no longer deform when exposed to heat. This makes RIM ideal for low quantities of large, complex, stable, and lightweight components, including 2-component parts.


Benefits of reaction injection molding

  • Prototypes made of multi-component material are possible
  • Very large and complex components
  • Large range of materials from elastic to stiff and transparent through to temperature-resistant
  • Discharge quantity of up to 200 units depending on the tool design, tool material, and part geometry


Machine capacities for reaction injection molding

2 x Dekumed Unidos 300

1 x Dekumed Unidos 200

1 x Tartler MDM5

1 x Tartler CG52



Materials for reaction injection molding

  • For the tools: Plastic block materials of different densities from 0.14 to 1.4; PU systems, close-to-production materials, Shore A40 - D 1.2; EPP; Polyurethane
  • For the parts: Glass fibre-filled material; rubber


Post-processing options

  • Varnishing


Applications of reaction injection molding

  • For the rapid creation of complex prototypes and functional components in average quantities in close-to-production quality and material
Applications of reaction injection molding

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