PVC pelletizing machine is designed for recycling PVC plastic. PVC (polyvinyl chloride) plastic has unique properties as a common plastic raw material. As a result, the processing requirements for PVC plastic are different from other plastics. In order to ensure high-quality production results, a specially designed PVC granulator machine has come into being.
Special characteristics of PVC plastics
PVC plastic is a widely used and unique plastic with many special characteristics. Its main characteristics can be summarized in the following three areas:
- Low-temperature pelletizing properties: PVC plastic is pelletized at low temperatures, typically between approximately 140°C and 150°C. This allows for the preparation of PVC pellets at lower processing temperatures, which helps maintain the stability of the raw material.
- Narrow maturation to decomposition temperature range: PVC has a relatively narrow temperature range between maturation and decomposition temperatures of about 20°C.
- Corrosive properties: PVC has a certain degree of corrosiveness, which can have a large corrosive effect on the metal surface of the PVC pelletizing machine screw.
What should a PVC pelletizing machine have?
In order to adapt to the special characteristics of PVC plastic, the PVC Dana making machine is different from the general plastic granulating machine. It should have the following functions:
PVC dana making machine adopts low-temperature pelletizing
In the PVC pelletizing process, the characteristics of low temperature and high pressure are crucial. PVC pelletizing machines can realize the whole process of PVC maturing. PVC granulator machines can ensure the plastic is completely melted without over-temperature decomposition. Through precise temperature control, PVC plastic is guaranteed to be processed stably in the appropriate temperature range.
Special screws for PVC pelletizing machine
In order to cope with the problem of possible corrosion of PVC plastics on metal screws, the screw and barrel overfeeding surface of the PVC pelletizing machine adopts an anti-corrosion design with hard chrome plating. This can effectively prevent corrosion and prolong the service life of the PVC Dana making machine.
The screw of the PVC pelletizing machine has no dead angle design on the contact surface with plastic, including the die head over the material surface. This can effectively avoid decomposition, carbonization, and other problems caused by the plastic staying too long, and ensure the continuity and quality stability of plastic processing.
Cooling device for PVC pelletizing machine
In order to prevent the decomposition and carbonization of PVC plastics, PVC pelletizing machines are equipped with cooling devices. Water cooling inside the screw, water cooling outside the machine, or ventilation cooling outside the machine can ensure that the PVC plastic maintains a stable temperature during processing.
