Two-Shot Molding

examples of two-shot technology - ear hook and battery door for hearing aid


  • Combines two different thermoplastics into a single component
  • Creates complex, multi-color, multi-material components
  • Consolidates the number of parts
  • Bonds are stronger than those from joining separate parts after molding
  • Lower tolerances
  • Improved repeatability and accuracy
  • Uses turntable technology, index plate systems, and core-back technology as needed
  • Expert, in-house mold building and decades of experience
  • Also known as overmolding and double-shot molding

Examples of use

  • Instrument handles with a hard core and softer, ergonomic outer material
  • Hearing aids
  • Pacemakers and implantable cardioverter-defibrillators (ICD)
  • Cardiovascular home monitoring devices
  • Drug delivery
  • Abutments for dental implants
cardiology products showing two-shot molding capability

Tegra Medical Molding Technologies

Molded frame for the sound processor in a hearing implant

Injection Molding

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Micro-molded components

Micro Molding

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Hearing aid part

Two-Shot & Insert Molding

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Injection Mold Closeup

In-House Mold Making

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