Does Not Feed Material

During pre-molding, the screw rotates but does not feed material.

1. Back pressure is too high

2. There is insufficient cooling water from the feeding port, and the materials in the feeding port are "bridged"; adjust the water volume and remove the plastic blocks with sticky structures.

3. Lack of materials, add materials

4. The screw is broken

5. The back pressure is adjusted too high, lower the back pressure.