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With the wide application of plastic products, the environmental problems caused by waste plastics are becoming more and more serious. Plastic recycling, as a process of restoring waste plastics to utilizable resources, has become one of the important means to solve plastic pollution. The twin-screw extruder converts mixed and contaminated waste plastics into high-quality recycled particles through efficient plasticizing, mixing, desgassing and modifying processes, effectively realizing closed-loop recycling of plastics. Nanjing Granuwel Machinery Co., LTD., as a professional extruder export manufacturer, our twin-screw extruder is committed to providing efficient and environmentally friendly plastic recycling solutions for global customers.
1. Core components and structure design
The twin-screw extruder is composed of a transmission device, a feeding device, a barrel and a screw. Two parallel and tightly meshed screws are placed in the barrel of the “∞” section, and the material is effectively processed by rotating in same directions. The modular design of the twin screw barrel and the building block structure of the screw element provide a wider range of flexible options for processing different plastics. Our extruders are designed with the characteristics of different waste plastics in mind to ensure the best processing results and the highest energy efficiency ratio.
2. Solid transport and melting process
The feed system of the twin-screw extruder feeds the waste plastic into the thread gap, and the shear heat generated by external heating and screw rotation causes the material to gradually warm up and begin to melt. In this process, each cylinder has a cooling channel hole inside, which can be cooled by water or oil, and the modular temperature setting and precise temperature control of the PID structure are essential to ensure uniform plasticization of the material.
Granuwel Plastic Recycling Twin Screw Extruder
3. Mixing and devolatilization mechanism
The mixing section of the twin-screw extruder is subjected to strong shear and extrusion, so that the polymer is fully mixed. At the same time, the vacuum devolatilization device can efficiently remove water and other volatile substances in the melt, use a large area of mesh to separation of impurities, improving the quality of the final product.
4. Innovative technology and technical advantages
Nanjing Granuwel’s modern twin-screw extruders have a modular design, which facilitates adjusting screw combinations for different waste plastic characteristics and enhances equipment adaptability. At the same time, the integrated automatic control system can realize the accurate adjustment of temperature, pressure, speed and other parameters to ensure process stability and product quality.
Application and advantage
1. Efficient processing of various types of materials
Our twin-screw extruders are not only suitable for handling a variety of common plastics such as polyethylene (PE), polypropylene (PP), polystyrene (PS), but also effectively cope with materials containing heat-sensitive substances such as polyvinyl chloride (PVC). Its excellent mixing capacity and self-cleaning function make it excellent in the face of mixed waste.
2. High output and high quality output
Nanjing Granuwel’s twin-screw extruders have high production capacity, such as the large size extruders of the GTE-D series, which can reach a output of 5500~8000kg per hour. In addition, precise temperature and pressure control guarantees the high quality of recycled plastic particles, enabling them to meet stringent standards for industrial applications.
3. Low energy consumption and easy operation
The design concept of our twin-screw extruders includes energy efficiency optimization, reducing energy consumption through efficient drivetrains and heat exchange mechanisms. The user-friendly interface and automatic control system simplify the operation process and reduce the technical requirements for operators.
4. Economic benefits and environmental value
Plastic recycling with Granuwel’s twin-screw extruders significantly reduces raw material costs while reducing environmental pollution. The application of recycled plastics further promotes the circular economy and meets the requirements of sustainable development.
Future outlook
1. Direction of technological innovation
Nanjing Granuwel will continue to pay attention to technological innovation, and the future twin-screw extruder will further integrate intelligent technology to achieve finer control and more efficient operation. The Internet of Things technology is introduced to promote remote monitoring and maintenance of equipment, and artificial intelligence algorithms are applied to optimize process parameters and improve production efficiency.
2. Market potential and development demand
With the global awareness of environmental protection, the plastic recycling industry will usher in greater space for development. Nanjing Granuwel’s twin-screw extruder as a key link of technical equipment, its market demand is expected to continue to grow. The improvement of policy support and industry standards will also promote technological progress and application popularization in this field.
Conclusion
Nanjing Granuwel’s twin-screw extruders play an integral role in plastics recycling with their efficient processing capacity, flexibility and energy saving. With the progress of science and technology and the continuous pursuit of sustainable development, our twin-screw extruders will continue to lead the development direction of plastic recycling technology and contribute to the construction of a green circular economy. We look forward to working with customers around the world to create a better future.