Hot Runner System

Mold-Masters Co-injection hot runner systems (formerly Kortec) utilizes industry leading technology to convert mono-layer components to multi-layer while maintaining your existing part quality and productivity levels. The core layer can be either a high performance barrier to improve part performance or a post consumer recycled (PCR) resin to lower part costs. Ideal for a wide range of packaging, medical, consumer goods and automotive applications.


Co-Injection Nozzles

  • "3-Layer" Flow.
  • Core on "zero" gradient of velocity profile.
  • Total control of core distribution.
  • Shot-to-shot and cavity-to-cavity consistency.
  • Pneumatic Valve Pin Actuation.

Co-Injection Manifolds

  • Optimized hot runner channels.
  • Low residual volume.
  • Improved shear balance (verified in production).
  • Cavity-to-cavity uniformity.
  • Leverages Mold-Masters technology.

Standard Mold Construction

  • Standard cooling.
  • Standard cavity spacing.
  • Ability to retrofit existing molds.

High Compatibility

  • Ability to utilize existing tooling.
  • Use with monolayer and multilayer tooling.
  • Applications are reviewed on a case by case basis. Please contact for more information.