Injection Blow Injection Blow Molding (IBM)
NOZZLE FREEZE OFF
Recommended Actions
Too much heat being drawn from the • Insulate the nozzle from the sprue bushing.
Nozzle to the sprue bushing • Increase the manifold temperature.
• Increase the melt temperature.
• Reduce the cycle time.
Improper heat control of nozzle
• Verify proper heater operation.
• Verify proper location and size of heater bands.
• Check for proper location, size and wattage of heaters.
• Relocate thermocouple to more accurately
Measure nozzle temperature
Incorrect nozzle design or orifice size • Change to appropriate size and design for the material.
- Too much heat being drawn from the
- Insulate the nozzle from the sprue bushing.
- Nozzle to the sprue bushing
- Increase the manifold temperature.
- Increase the melt temperature.
- Reduce the cycle time.
- Improper heat control of nozzle
- Verify proper heater operation.
- Verify proper location and size of heater bands.
- Check for proper location, size and wattage of heaters.
- Relocate thermocouple to more accurately
- Measure nozzle temperature
- Incorrect nozzle design or orifice size
- Change to appropriate size and design for the material.
Related Knowledge
Source
Imported from Molding Defects All Platforms spreadsheet