PET granulator Machine is a mechanical device specially used for granulating plastic materials such as PET (polyethylene terephthalate). This HQ-120 single screw plastic granulator is a typical representative. It processes recycled or virgin PET plastics and other plastic materials such as PP (polypropylene) into uniform granular products through a series of complex mechanical and process flows. The machine integrates multiple functional modules such as plastic conveying, melting, extrusion, cooling and pelletizing, and can efficiently and stably complete the plastic granulation process, providing high-quality raw materials for plastic reuse and subsequent processing.

PET Granulator Machine Key Features

1. Wide range of material adaptability: HQ-120 PET Granulator Machine has excellent material adaptability. It can not only process PET and PP plastics, but also can be used for granulation of various plastic materials such as ABS, PC, PE, HIPS, TPU and PC/ABS. In actual tests, the machine has excellent processing capabilities for different plastic materials. For example, when processing electronic waste shells containing a mixture of various plastics, it can stably separate and granulate various plastics, and the quality of the particles is uniform, meeting the requirements of subsequent processing. This wide range of material adaptability is due to its unique screw design and advanced process parameter adjustment system. The structure and pitch of the screw are carefully designed and can be optimized according to the characteristics and flow properties of different plastics to ensure that the plastics can be fully mixed, melted and extruded in the screw. At the same time, the process parameter adjustment system can monitor and adjust parameters such as temperature, pressure, and speed in real time to adapt to the processing needs of different plastics, making the machine have extremely high application value in the field of plastic recycling, which can meet the processing needs of plastic waste from different sources and greatly improve the recycling rate of resources.

   
   

2. High production output capacity: The machine has an impressive high production output capacity, with an output range of up to 380 - 550 KG/HR. This efficient production capacity is due to its advanced design and powerful power system. The main motor adopts a 110KW variable frequency motor (global brand), which can provide stable and strong power output to ensure the rapid conveying and processing of plastics in the screw. In actual production, taking the processing of PET plastic as an example, an average of about 450KG of high-quality plastic particles can be produced per hour during 8 hours of continuous working time. The efficient conveying capacity of its screw is also a key factor in improving production efficiency. The speed of the screw can be flexibly adjusted according to production needs, and the maximum speed can reach 120 revolutions per minute, which makes the residence time of the plastic in the screw reasonable, which not only ensures the full melting and mixing of the plastic, but also increases the extrusion speed, greatly improves production efficiency, and meets the production needs of large-scale plastic recycling and processing companies.

   
   

3. Advanced temperature control system: Equipped with an 8-zone temperature control system, it can provide precise and consistent processing conditions. The temperature control accuracy of each temperature zone can reach ±1℃, which is crucial for the melting and extrusion process of plastics. Different plastic materials require specific temperature conditions during processing, and this temperature control system can be precisely adjusted according to the requirements of different materials. For example, when processing PET plastic, accurately controlling the temperature of each zone within the appropriate range can ensure that the PET plastic is fully melted and does not decompose. The system uses advanced sensors and intelligent controllers to monitor temperature changes in real time and automatically adjust the working status of the heating or cooling device. When the temperature fluctuates beyond the set range, the system will respond quickly, adjust the heating power or start the cooling system to ensure that the temperature is always kept within the optimal range, thereby ensuring that the quality of the produced plastic particles is stable and the physical properties are good.

   
   

4. High-quality screw material: The screw is made of high-quality SACM-1 material with excellent wear resistance and corrosion resistance. During the long-term plastic processing process, the screw will be subject to friction and chemical corrosion from the plastic. SACM-1 material can effectively resist these damages and extend the service life of the screw. After actual testing, after 5,000 hours of continuous operation, the wear of the screw is minimal and it can still maintain good working performance. This material has a hardness of up to HRC58-62 and can withstand high-pressure and high-friction working environments. At the same time, its good corrosion resistance makes the screw not corroded when processing plastics containing acidic or alkaline components, ensuring the stable operation of the machine and the control of long-term use costs. In addition, the surface of the screw has undergone a special treatment process to further improve its wear resistance and smoothness, reduce the residue of plastic on the surface of the screw, and improve the transportation and processing efficiency of plastics.

   
   

5. Energy saving and high efficiency: The machine performs well in energy utilization and has a significant energy-saving effect. The 110KW variable frequency motor can automatically adjust the power output according to the actual production load, avoiding the idling of the motor and excessive energy consumption. At the same time, the equipped gear oil cooling and filtration system not only ensures the normal operation of the gear, but also improves the energy utilization efficiency. According to actual statistics, compared with traditional plastic granulators, this machine can save 15% - 20% of energy under the same production task, reduce production costs, and meet the requirements of modern industry for energy saving and environmental protection. In addition, the overall design of the machine optimizes the energy transfer path and reduces the loss of energy during the transfer process. For example, the transmission device between the screw and the motor adopts efficient coupling and gear transmission, with a transmission efficiency of more than 95%, which further improves the energy utilization efficiency.

   
   

6. Innovative design structure: The machine adopts a double-bolt continuous screen changer equipped with a 15-hole nozzle to achieve uninterrupted operation. This innovative design greatly improves production efficiency and reduces production interruption time caused by screen change. During continuous production, the double-bolt continuous screen changer can quickly and stably replace the filter to ensure the filtration effect and extrusion quality of the plastic. At the same time, the 15-hole nozzle makes the plastic extrusion more uniform, and the produced particles are of the same size, which improves the quality and market competitiveness of the product. The double-bolt continuous screen changer realizes the rapid replacement of the filter through a unique mechanical structure design and hydraulic control system. The replacement time only takes a few seconds, which greatly shortens the production downtime. The aperture accuracy of the 15-hole nozzle is as high as ±0.05mm, which can ensure that the plastic is extruded at a uniform speed and flow rate, so that the size deviation of the produced plastic particles is less than ±0.1mm, meeting the strict requirements of high-end plastic products on raw material quality.

   
   

7. Efficient cooling system: The machine is equipped with an efficient cooling system, which is essential to ensure the quality of plastic pellets and the stable operation of the machine. The cooling system adopts a combination of water cooling and air cooling, which can quickly cool and solidify the extruded plastic strips. In the cooling water tank part, the water temperature can be accurately controlled between 20-30℃ to ensure that the plastic strips will not deform or stick due to excessive temperature during the cooling process. At the same time, the power and air volume of the cooling fan are carefully designed to take away the heat on the surface of the plastic strips in time and accelerate the cooling process. After actual testing, in the continuous production process, the cooling system can cool the plastic strips from the extrusion temperature to the room temperature in a short time, ensuring the shape and size of the plastic pellets Stable, and improving the qualified rate of the product.

   
   

8. Intelligent control system: HQ-120 PET plastic granulator is equipped with an intelligent control system, which realizes the automation and intelligent management of the production process. The system adopts advanced PLC (Programmable Logic Controller) and touch screen operation interface, and the operator can easily set and adjust various parameters of the machine, such as temperature, speed, pressure, etc. through the touch screen. At the same time, the intelligent control system also has real-time monitoring and fault diagnosis functions, which can display the machine's operating status and various parameter values in real time, and issue an alarm in time when a fault occurs, prompting the operator to perform maintenance. For example, when the temperature exceeds the set range, the motor is overloaded, or the screw is blocked, the system will automatically stop the machine and display the fault code, which is convenient for maintenance personnel to quickly locate and solve the problem, greatly improving production efficiency and machine reliability.

Applications of PET Granulator Machine

The PET Granulator Machine is engineered to recycle and pelletize PET materials into high-quality granules. Its versatile applications support various industries with sustainable and efficient PET reuse.

1. Electronic waste recycling: In the field of electronic waste recycling, PET Granulator Machine plays an important role. The shell of electronic equipment usually contains a large amount of plastic materials such as PET, ABS, etc., such as old computer hosts, monitors, printers, etc. Through this granulator, the plastics in these electronic wastes can be recycled and reused. According to statistics, about 300-400 kg of plastics can be recycled for every ton of electronic waste processed. The recycled plastics are granulated and can be reused to make electronic equipment shells or other plastic products. In electronic waste recycling companies, the use of this granulator can improve recycling efficiency and quality and reduce production costs. At the same time, the reuse of recycled plastics in electronic equipment manufacturing is in line with the concept of environmental protection and sustainable development, reducing the pollution of electronic waste to the environment, and reducing dependence on virgin plastic resources, which promotes the green development of the electronics industry.

   
   

2. Automotive plastic recycling: A large number of plastic parts are used in the automotive industry, such as bumpers, dashboards, interior panels, etc., including PET, PP and other plastic materials. PET plastic granulator can be used for the recycling of automotive plastic waste. During the dismantling of scrapped cars, plastic parts are collected, cleaned, crushed and other pre-processed, and then sent to the granulator for processing. About 50-100 kg of plastic can be recycled from each scrapped car. The recycled plastic particles can be used to make recycled materials for auto parts, reducing the production costs of auto manufacturers. For example, some automakers use recycled plastic particles to make car interiors, fenders and other parts, which not only reduces the cost of raw materials, but also reduces the impact on the environment, meets the requirements of the automotive industry for environmental protection and sustainable development, and enhances the social image of the company.

   
   

3. Packaging industry: The packaging industry is a major user of plastics, and PET plastics are often used to make beverage bottles, food packaging boxes, etc. PET plastic granulators can recycle and granulate discarded PET packaging materials. Taking beverage bottles as an example, the number of discarded beverage bottles generated worldwide each year is huge. Through recycling, the generation of plastic waste can be greatly reduced. Recycled PET plastic particles can be used to make new packaging materials, such as making beverage bottles and packaging films again. This not only reduces the cost of raw materials for packaging companies, but also reduces the consumption of non-renewable resources such as oil, which is of great significance to environmental protection. At the same time, the use of recycled plastics to manufacture packaging materials meets consumers' demand for environmentally friendly products and helps companies improve their market competitiveness.

   
   

4. Construction industry: In the construction industry, some plastic products such as pipes, door and window accessories, etc. also generate waste. PET plastic granulators can recycle these construction plastic wastes. Recycled plastic particles can be used to make plastic profiles, insulation materials, etc. for construction. For example, recycled PET plastics are mixed with other materials to produce building boards with good insulation properties. This not only solves the problem of construction waste disposal, but also provides new environmentally friendly materials for the construction industry, promoting the green development of the construction industry. Using recycled plastics to manufacture building materials can reduce construction costs and reduce the pollution of construction waste to the environment, which is in line with the trend of sustainable development in the construction industry.

   
   

5. Toy manufacturing industry: A large amount of plastic scraps and waste products are generated in the toy manufacturing process, many of which are plastic materials such as PET and PP. PET plastic granulators can recycle and reuse these toy wastes. After processing, the recycled plastic particles can be reused to make toys, reducing the production costs of toy manufacturers. At the same time, using recycled plastic to make toys is also in line with the concept of environmental protection, meeting consumers' demand for environmentally friendly products and enhancing the social image of enterprises. In today's fiercely competitive toy market, the use of environmentally friendly materials and recycled plastics can bring differentiated competitive advantages to enterprises and attract more consumers who pay attention to environmental protection.

Competitive Advantages

• High-Transparency Granules: Produces granules with excellent clarity, suitable for demanding applications such as preforms and sheets.

• Energy-Efficient Design: Optimized for low energy consumption, meeting environmental and sustainability standards.

• Durability and Longevity: The die head and screw are made of wear-resistant materials, extending machine life and boosting productivity.

PET Granulator Machine Maintenance

1. Daily cleaning: Daily cleaning is an important part of maintaining the performance of the PET plastic granulator. After the end of production every day, compressed air should be used to clean the dust and plastic residue on the surface of the machine, especially the key parts such as the screw, barrel, and screen changer. For the residual plastic inside the machine, a special detergent can be used for cleaning, but the detergent should be avoided to corrode the machine parts. Perform a comprehensive internal cleaning once a week, disassemble the removable parts such as nozzles, filters, etc., and thoroughly clean and inspect them. When cleaning the nozzle, use a soft brush to brush gently to avoid damaging the nozzle aperture. Keeping the machine clean can prevent the accumulation of plastic residues from affecting the performance of the machine, extend the service life of the parts, and ensure the stable quality of the plastic pellets produced.

   
   

2. Regularly check the parts: Regularly check the various parts of the machine, including the screw, barrel, motor, gearbox, etc. Check the wear of the screw and barrel once a month, use professional measuring tools to measure the diameter of the screw and the inner diameter of the barrel, and replace them in time if the wear exceeds the specified range. Check the insulation performance and operating status of the motor every quarter, and use an insulation resistance tester to measure the insulation resistance of the motor to ensure that it meets the standard requirements. Check the oil level and oil quality of the gearbox every six months. If the oil level is insufficient, it should be replenished in time, and the oil quality should be replaced in time if it deteriorates. At the same time, check the wear of the gears. If there is abnormal wear, the gears should be repaired or replaced in time. Regular inspections can detect potential problems in time, avoid machine failures, and ensure the stable operation of the machine.

   
   

3. Lubrication and maintenance: Regular lubrication of the moving parts of the machine is the key to ensuring its normal operation. The gearbox should be replaced with lubricating oil at the prescribed time interval, generally every 1000 hours of operation. When replacing the lubricating oil, drain the old oil first, and then add new lubricating oil that meets the requirements. For the bearing parts of the screw and barrel, an appropriate amount of grease should be added every week. When adding lubricants, choose lubricating products suitable for the machine model and working conditions, and avoid using inferior lubricants to cause component damage. Good lubrication can reduce friction between components, reduce energy consumption, improve the operating efficiency of the machine, and extend the service life of components.

   
   

4. Temperature control system maintenance: The temperature control system is a key part of the PET plastic granulator and requires regular maintenance. Check the accuracy of the temperature sensor every month and use professional calibration equipment to calibrate it to ensure that the temperature display is accurate. Check the working status of the heating coil and cooling system every quarter. If the heating coil is damaged or the cooling water pipe is blocked, it should be repaired or cleaned in time. When checking the heating coil, use a multimeter to measure its resistance value to determine whether the heating coil is working properly. Maintaining the normal operation of the temperature control system can ensure the stability of the plastic processing process and product quality, and avoid problems such as plastic decomposition or unqualified pellet quality due to abnormal temperature.

   
   

5. Electrical system maintenance: The stable operation of the electrical system is essential to the machine. Check whether the electrical circuit connection is firm, loose, or damaged every month. Use insulating tape to wrap and repair the damaged wires to ensure electrical safety. Clean the electrical control cabinet every quarter to remove dust and debris to prevent electrical failures caused by dust. Regularly check the working status of electrical components such as inverters and contactors, and replace them in time if damaged. At the same time, check whether the grounding of the electrical system is good to avoid safety accidents caused by leakage. Maintaining the electrical system well can avoid machine downtime and safety accidents caused by electrical failures, and ensure the continuity and safety of production.

   
   

6. Pelletizing system maintenance: The cutters of the pelletizing system need to be maintained and replaced regularly. Check the wear of the cutters weekly. If the cutters are found to be blunt or damaged, they should be sharpened or replaced in time. When sharpening the cutters, professional sharpening equipment should be used to ensure that the cutting edges are sharp and the angles are correct. Clean the pelletizing system monthly to remove plastic residues in the cutters and pelletizing chamber. At the same time, check the installation position and gap of the cutters to ensure the uniformity and quality of the pelletizing. Good pelletizing system maintenance can ensure the production of plastic pellets that meet the requirements, improve the market competitiveness of the products, and reduce customer complaints and returns due to unqualified pellet quality.

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PET Granulator Machine Parameters：

Single Screw Plastic Pelletizing Extrusion Machine Parameters:

Standard production line configuration