Plastic Pelletizing Line
This plastic palletizing line is also used in the PE film palletizing field. Its main parts includes single screw extruder, palletizier machine, dewatering machine, air cupply system etc. Below is a project in detail for a plastic palletizing line which can produce pallets 150-200kg/h.
Description
Introduction
A Plastic Pelletizing Line is an integrated industrial system for processing plastic materials (including virgin resin, plastic waste or scrap) into uniform pellets. These pellets can be used as raw materials for various plastic manufacturing processes such as blown film, injection molding, pipe extrusion and sheet production.
Features
High-efficiency and energy-saving production system
Our products are equipped with permanent magnet synchronous motor drive system, which saves more than 25% energy compared with traditional asynchronous motors. Secondly, the power factor of the whole line is always kept above 0.95, and the comprehensive energy consumption does not exceed 0.4kWh/kg at a capacity of 500kg/h.
Stable extrusion
Our core extrusion system of the whole line adopts high-torque reducer and high-precision screw design, which fully plasticizes the material and melts evenly, and can stably output pellets with consistent diameter and uniform density.
High degree of automation
Plastic Pelletizing Line is equipped with fully automatic temperature control, pelletizing, water ring cooling, dehydration and drying systems, and the process from feeding to finished product output is automatic.
Various pelletizing methods
Depending on the characteristics of the material, we provide a variety of pelletizing methods such as water ring pelletizing, underwater pelletizing, strip cutting and air cooling to meet the pelletizing needs of many types of thermoplastics such as PE, PP, PS, ABS, PET, etc.
Part 1 single screw extruder
1. Screw diameter: φ90
2. Length to diameter ratio: 28:1
3. Motor power: 75KW, variable frequency speed regulation
4. The screw and barrel are both treated with 38CrMoAlA nitriding
5. Special hard tooth surface gear reducer is selected for the gearbox
6. Pre heater: ceramic heater, stainless steel casing, fan cooling selected
7. Heater power: 5 sets of 6KW, total 30KW, fan cooling 0.24KW x 5 sets, total 1.2KW
8. Forced feeding motor power: 3KW, variable frequency speed regulation
9. Mold heating: 4KW × 2, filter diameter of screen changer: φ200 mm
10. Hydraulic screen changing device: oil pump motor power: 2.2KW, manually controlled
11. The mold is precision made using 40Cr forging, quenching and tempering processes
Part 2 Water ring granulator
1. Particle cutting motor power: 1.1KW, variable frequency speed regulation
2. Pump motor power: 2.2KW
3. Number of cutting knives: 2
Part 3 Particle dewatering machine
1. Dehydration motor power: 4KW
2. Rotation diameter: Φ300mm
3. Adopting bottom drainage
4. The parts in contact with the material are made of stainless steel
Part 4 Air supply device
1. Fan power: 4KW
2. The hopper and wind conveying pipeline are all made of stainless steel
Part 5 Cyclone silo
1. Storage bin capacity: 1 cubic meter
2. The entire silo is made of stainless steel
Part 6 Spiral feeding machine
1. Motor power: 2.2KW
2. Screw diameter: 114mm
3. Pushing screw motor power: 0.75KW
4. All parts in contact with the material are made of stainless steel
Part 7 Electrical appliances
1. The frequency converter adopts Fuji or ABB from Japan
2. The contactor electrical appliance adopts Suzhou Siemens contactor
3. The temperature control meter adopts Japanese RKC instrument
4. All others adopt well-known domestic brands
Evergreen Group is deeply rooted in the field of manufacturing and supplying laundry washing machines and plastic pipe production lines since 2003. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards.
Why Choose Us
Production Market
Our products have been exported to Japan, South Korea, India, Indonesia, Thailand, the Philippines, Vietnam, Israel, Iraq, Brazil, the UAE, Argentina, Canada, Australia, and many other countries. They enjoy a strong market reputation and have earned the trust of customers worldwide.
Professional team
Before purchase, our expert team recommends the most suitable products based on customer requirements and provides detailed technical consultation. During the sales process, we ensure on-time delivery and offer installation guidance. After sales, we provide long-term technical support, warranty services, and spare parts to help customers achieve optimal product performance and reliable operation.
Quality Control
All products are manufactured in strict compliance with national and internal factory standards. We have obtained CE certification as well as ISO 9002 and ISO 14000 certifications to guarantee superior quality and environmental compliance.
Product Customization
We understand that every customer has unique needs. Our experienced R&D team is capable of customizing products to meet specific requirements, ensuring solutions that are both efficient and tailored to individual applications.
FAQ
Q: What materials can a plastic pelletizing line process?
A: A plastic pelletizing line can process a wide range of thermoplastics, including PE, PP, PET, PS, PVC, ABS, and engineering plastics. It handles both virgin material and post-industrial or post-consumer recycled plastic.
Q: What is the typical output capacity of a plastic pelletizing line?
A: Output capacity depends on machine configuration and material type. Common production ranges from 100 kg/h to over 1000 kg/h. High-capacity twin-screw lines can reach up to 2000 kg/h, ideal for large-scale recycling or compounding plants.
Q: What is the difference between single screw and twin screw extruders in the pelletizing line?
A: Single screw extruders are suitable for clean, homogeneous materials, offering stable output at lower cost. Twin screw extruders provide better mixing, venting, and plasticization, making them ideal for recycling mixed or moisture-sensitive materials.
Q: How is moisture removed during the pelletizing process?
A: Advanced pelletizing lines use vacuum degassing systems in the extruder and centrifugal or hot air dryers after cutting. These systems ensure final pellets are dry and meet moisture specifications for downstream processing.
Q: What factors affect the pellet quality?
A: Pellet quality is influenced by material purity, plasticization consistency, die design, strand cooling, and cutting precision. A well-designed line with accurate temperature control, uniform feed, and efficient pelletizers produces uniform pellets with low dust and consistent size (typically 3–5mm).
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