PVC granule making machine for PVC products

PVC granule is widely used in the production of PVC products, for example PVC cable, PVC ceiling, PVC edge band and PVC profiles…Main materials for producing PVC granules are PVC resin, calcium powder and additives.

Some parameters of PVC granules:
1. Physical properties of PVC plastic pellets: PVC resin is a thermoplastic with amorphous structure. Under UV light, hard PVC fluoresces light blue or purple-white, while soft PVC fluoresces blue or blue-white. The physical and mechanical properties of polyvinyl chloride depend on the molecular weight of the resin, the content of plasticizers and fillers.
⒉ Thermal properties of PVC plastic pellets: The softening point of PVC resin is close to the decomposition temperature. In order to ensure normal molding and processing, two most important process indicators are specified for polyvinyl chloride resin, namely decomposition temperature and thermal stability.
3. Stability of PVC plastic pellets: PVC resin is a relatively unstable polymer, which will degrade under the action of light and heat. The process is to release hydrogen chloride and change its structure, but the degree is relatively light.
⒋ Electrical properties of PVC plastic pellets: The electrical properties of PVC depend on the amount of residues in the polymer, the type and amount of various additives in the formula. The electrical properties of PVC are also related to the heating conditions. Unlike non-polar polymers such as polyethylene and polypropylene, the electrical properties of PVC vary with frequency and temperature. For example, the dielectric constant decreases with increasing frequency.
⒌Chemical properties of PVC plastic pellets: PVC has good chemical stability, PVC is stable to most inorganic acids and alkalis, and is decomposed into hydrogen chloride without being dissolved by heat.
⒍Processing properties of PVC plastic granules: PVC is an amorphous polymer. Because of its poor thermal stability, it contains a small amount of HCl released at this temperature, which promotes its further decomposition. It is necessary to add an alkaline stabilizer and HCl to inhibit it. Catalytic cracking reaction. For PVC, processing-related resin properties are: particle size, thermal stability, molecular weight, bulk density, purity and foreign matter, and porosity.

The main advantages of using PVC granules to produce PVC products are: It increases the temperature of the granulation material itself, reduces the moisture content of the granulation, reduces the load of the dryer, and improves the work efficiency. And the equipment is easy to operate, flexible and easy to maintain. It reduces the labor intensity of workers and greatly prolongs the service life of the equipment. The granulated raw material is plasticized better, and the quality of the product produced is higher.

Basically PVC granule making machine includes: double screw extruder, mold, cutting device and cooling system. According to the capacity difference, we will have different models machines.

Main features of PVC granule making machine:

1. The twin-screw extruder uses abb inverter and Siemens motor, which has better equipment stability and more convenient maintenance.
2. You can choose to use PLC control, with a higher degree of automation.
3. For equipment with different output, different numbers of fans and silos are required. The larger the output, the more needed, the faster the cooling and the faster the production speed.
4. Use the most advanced pelletizing knives and molds to increase the output and service life of the equipment.

Below are models and main parameters of PVC granule making machinery: