- Issue: Blistering or bubbles are small air pockets that appear on the surface of the bottle. This issue is typically caused by trapped air during molding, resulting in unsightly imperfections.
- Possible Causes:
- Entrapped air or gas during molding.
- High mold temperatures.
- Inadequate cooling during the molding process.
- Troubleshooting Steps:
- Inspect the cooling process for uniformity.
- Check the injection speed and mold temperature.
- Ensure that proper venting is in place to allow gas to escape.
- Solutions:
- Slow down the injection speed to prevent air entrapment.
- Adjust the cooling process to ensure uniformity.
- Ensure proper venting in the mold design to allow trapped air to escape.
- Preventive Measures:
- Regularly maintain molds to ensure they are vented properly.
- Monitor the molding process for even cooling and consistent injection speeds.
