Note: Sealing a Nylon Shell for a fuel vapor Assembly

Objective:

To heat an electrically conductive ring gasket to seal the nylon halves of an activated-carbon fuel vapor module while reducing process time and cost. 

End Product:

Fuel Vapor Assembly

Equipment:

  • Ambrell EKOHEAT 20kW power supply
  • Remote heat station with 0.66µF capacitance
  • Specially-designed four-position induction coil
  • Customer-designed parts and test fixture 

Materials:

Nylon housing molds, conductive seal 

Temperature:

outer ~220°F , inner seal ~500°F

Frequency:

165 kHz

Testing:

Filter modules are assembled on the fixture with ring gasket. Pressure is applied to the modules, modules are rotated and induction heating is started. After 10-12 seconds, heating is halted and the modules are removed from the fixture.

Benefits:

Seal integrity is confirmed.

  • Process times are reduced by more than 50%

  • seal material costs are reduced by ~90%

  • on-coil voltages are reduced by ~90%

  • arcing and related down-times are eliminated 

Sealing a Nylon Shell for a fuel vapor Assembly

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