How to solve the PVC pipe sections with bubbles

Some PVC pipe sections will appear bubble phenomenon, Why? How should we solve it? Here we introduce for you:

1. May be because the material’s water is too high, this time on the need for drying the PVC pipe or changing the nozzle;

2. May be because PVC pipe mixing temperature is low, there is no discharge of water, this time on the need to increase the compounding temperature;

3. Maybe due to the low degree of vacuum or vent pipes get clogged, this time need to check the pump and piping;

4.Maybe due to the body or the die temperature is too high, you need to reduce the temperature;

5.Maybe because PVC pipe mixed ingredients thermal stability is poor, this time you need to check the recipe modification.