Molding Process


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Compression Molding

  • Material starts inside of cavity
  • Minimizes material usage
  • Lowest tool cost
  • "Overflows" required
  • Pre-forms required

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Transfer Molding

  • Material starts outside the cavity, but in the mold pot
  • Transfer uses the most material of any processing method
  • Reduced parting line flash
  • Relatively low tool cost

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Injection-Transfer Molding

  • Material starts outside of the mold
  • Uses less material than regular transfer molding
  • Reduced parting line flash
  • Best for high cost material that can’t be compression molded.
  • Balanced runner recommended

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Liquid Injection Molding (L.I.M)

  • Limited to silicone
  • Usually for high volume parts
  • Key is fast cycles
  • Highest cost tooling
  • Potentially lowest material usage
  • Balanced runner required
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