The problem of hollow plastic pellets may cause concern in the production of film granulators. An in-depth understanding of the factors contributing to this phenomenon and appropriate solutions are essential to improving pellet quality. This blog is to explore this issue.
Reasons for hollow plastic pellets
- Plastic raw materials contain high moisture content.
- Lower processing temperatures result in incomplete plasticization of the material.
- The cooling water temperature is too low causing the material to shrink and form a hollow structure
film granulator Solution
- Increase the drying temperature or time to ensure that the discharge hole of the film granulator is clear.
- Reasonably increase the processing temperature of the slow speed granulators to promote full plasticization of the material.
- Reasonably reduce the temperature of the die head of the slow speed granulators and increase the temperature of the cooling water to prevent shrinkage and produce a hollow structure.
