PET Mixed-Color Bottle Flake Regrinding Granulator

Product Overview

The PET mixed-color bottle flake regrinding granulator is a low-temperature extrusion granulation machine specially designed for PET bottle flake waste. It can process various types of PET bottle flakes, including those from cold-washed and hot-washed sources—such as mineral water bottle flakes, beverage bottle flakes, edible oil bottle flakes, industrial PET scrap, and transparent or colored PET bottle flakes. The equipment employs a single-screw extrusion process combined with a segmented precision temperature control system, operating within a low-temperature range of 240–270°C to achieve melting and plasticization while minimizing thermal degradation of PET. This ensures that the finished granules retain at least 85% of their intrinsic viscosity (IV value). Equipped with a multi-stage vacuum degassing system and a high-precision multi-layer filter die, the machine effectively removes residual moisture, low-molecular-weight substances, and fine impurities, keeping impurity levels below 0.5%. With filtration accuracy up to 150 mesh, the final regenerated granules are uniform, translucent, and consistently well-formed, meeting the requirements for reuse in spinning, injection molding, and other applications. As a custom-made product, pricing is not fixed; it is tailored according to the customer’s production capacity needs. Standard capacities range from 300 to 2,000 kg/h, with motor power ranging from 37 to 355 kW. Delivery takes approximately 70–80 working days, and the warranty period is 13 months from the bill of lading date.

Technical Principle

This PET mixed-color bottle flake regrinding granulator operates on a single-screw extrusion principle, processing cleaned and dried PET bottle flake feedstock. Its core operational workflow consists of five key stages: First is segmented precision temperature control, achieved through electric or electromagnetic heating elements made of cast aluminum, cast copper, mica, or ceramic, maintaining temperatures precisely between 240–270°C. This minimizes thermal degradation during PET bottle flake melting and plasticization. Next comes multi-stage vacuum degassing, utilizing a specially designed structure to remove residual moisture and low-molecular volatile compounds, preventing defects such as bubbles or voids in the regenerated granules. Following this is multi-level high-precision filtration, employing a filter die with up to 150 mesh capability to thoroughly eliminate minute impurities, ensuring exceptional purity of the final granules. Then, plasticized material is steadily extruded through the screw, guaranteeing uniform output. Finally, the granules are cut into pellets using either die-face cutting or strand-cutting methods, producing uniformly shaped, consistent-quality PET regenerated granules. Key components are crafted from premium materials: the screw and barrel are made of 38CrMoAlA bimetallic alloy with nitriding treatment; motors can be selected from international brands like Siemens, ABB, Weg, or top domestic manufacturers; bearings may come from NSK, SKF, INA, FAG, or leading domestic suppliers; and inverters are sourced from ABB, FUJI, Delta, Siemens, or similar brands, ensuring long-term stable operation.

Performance Parameters

1. Standard capacity: 300–2,000 kg/h
2. Processing temperature range: 240–270°C
3. Retention rate of intrinsic viscosity (IV value) in finished granules: ≥85%
4. Impurity content: ≤0.5%
5. Filtration accuracy: up to 150 mesh
6. Motor power: 37–355 kW
7. Compatible feedstocks: cold-washed and hot-washed PET bottle flakes—including mineral water, beverage, edible oil, industrial PET scrap, and transparent/colored PET flakes
8. Screw and barrel material: 38CrMoAlA bimetallic alloy with nitriding treatment
9. Heating method: electric or electromagnetic heating
10. Heater materials: cast aluminum, cast copper, mica, ceramic heaters
11. Motor brand: Siemens, ABB, Weg, or top domestic brands
12. Pelletizing method: die-face cutting or strand-cutting
13. Bearing brand: NSK, SKF, INA, FAG, or top domestic brands
14. Inverter brand: ABB, FUJI, Delta, Siemens, or similar brands
15. Delivery time: 70–80 working days
16. Warranty period: 13 months from the bill of lading date
17. Trademark/brand: PURUI
18. Place of origin: NANTONG

Core Advantages

1. Low-Temperature Plasticization Prevents Degradation: Operating within a low-temperature range of 240–270°C effectively reduces thermal degradation of PET, ensuring that the finished granules maintain an IV value retention rate of ≥85%, thus closely matching the performance standards of virgin PET. This makes the recycled material suitable for high-end applications such as spinning and injection molding.
2. Multi-Level Filtration Ensures High Purity: Equipped with a multi-stage high-precision filter die up to 150 mesh, combined with a multi-stage vacuum degassing system, the machine keeps impurity levels below 0.5%, producing granules that are uniform, translucent, and consistently well-formed—meeting the stringent quality requirements of downstream high-end customers.
3. Broad Compatibility with Feedstocks: Capable of handling both cold-washed and hot-washed PET bottle flake feedstocks—including mineral water, beverage, edible oil, industrial PET scrap, and transparent/colored PET flakes—expanding the scope of recyclable materials and enhancing the versatility of the equipment.
4. Customizable Capacity Design: As a tailor-made product, its capacity can be precisely configured to meet specific production needs, with standard capacities ranging from 300 to 2,000 kg/h, accommodating enterprises of varying scales and enabling up to 48 tons per day of PET regenerated granules under continuous 24-hour operation.
5. High-Quality Core Components: Featuring internationally renowned or top domestic brands for critical parts—nitrided bimetallic screws and barrels—this equipment delivers robust stability, extended service life, and reduced maintenance costs.

Core Product Value

1. High IV Value Retention Rate: With the ability to maintain high intrinsic viscosity, the recycled material meets the performance standards required for entry into high-end downstream markets such as spinning and injection molding, thereby increasing the added value of recycled materials by more than 40% compared to conventional recycled products.
2. Reduced Thermal Degradation Through Low-Temperature Processing: By minimizing thermal degradation during processing, the equipment lowers raw material losses and boosts utilization rates, reducing annual virgin PET procurement by over 10,000 tons, helping companies cut production costs and embrace green practices.
3. Broad Feedstock Compatibility: Enabling full utilization of diverse PET bottle flake waste streams, expanding enterprise raw material sourcing channels and strengthening waste recycling capabilities.
4. Customized Capacity Design: Tailored to match different enterprise production scales, ensuring precise alignment between equipment capacity and business needs, thus avoiding underutilization or excess capacity.

Target Customer Groups

PET bottle flake recycling plants, synthetic fiber producers, food packaging recyclers, large-scale recycled plastics processors, and polyester resource recovery enterprises—especially those seeking high-end recycled materials and aiming to enhance the value of waste recycling.

Application Scenarios

This equipment is primarily used for recycling and granulating various PET bottle flake wastes, including household PET containers such as mineral water bottles, beverage bottles, and edible oil bottles, as well as industrial PET scrap and transparent or colored PET bottle flakes. The resulting high-purity PET regenerated granules can directly serve multiple downstream applications, such as spinning synthetic fibers, injection molding food packaging containers, and manufacturing various PET plastic products, providing downstream businesses with high-quality recycled raw materials and supporting circular economy development.

Solutions to Industry Pain Points

1. Addressing the issue of yellowing and significant loss of intrinsic viscosity caused by high-temperature PET degradation: By adopting a low-temperature plasticization process and controlling processing temperatures within 240–270°C, the equipment minimizes thermal degradation, ensuring an IV value retention rate of ≥85% and meeting performance standards, thus avoiding reliance on lower-tier markets due to insufficient performance.
2. Solving the problem of inadequate filtration precision and excessive impurities in conventional equipment: Equipped with a multi-stage high-precision filter die up to 150 mesh and integrated vacuum degassing technology, the machine effectively eliminates fine impurities and residual moisture, keeping impurity levels below 0.5% and producing granules that are uniform, translucent, and meet the quality expectations of high-end downstream customers, enabling enterprises to enter the premium recycled materials market.
3. Tackling the challenge of low added value in recycled materials: Leveraging the high IV value retention and superior purity of the regenerated granules, the equipment expands application scenarios, allowing use in high-end processes such as spinning and injection molding. Compared to ordinary recycled materials, this approach increases the value of waste recycling by over 40%, boosting corporate profit margins.
4. Overcoming the limitation of narrow feedstock compatibility: Supporting both cold-washed and hot-washed PET bottle flake feedstocks—including colored flakes and industrial scrap—thus broadening enterprise raw material sourcing channels, improving waste recycling efficiency, and reducing material wastage.

Frequently Asked Questions (FAQ)

Q1: Is the price of this PET mixed-color bottle flake regrinding granulator fixed?
A: This equipment is custom-made and does not have a fixed price. Pricing is determined based on factors such as the customer’s production capacity requirements and configuration preferences, covering a capacity range of 300–2,000 kg/h.
Q2: What applications can the regenerated granules produced by this equipment support?
A: With an IV value retention rate of ≥85%, impurity levels below 0.5%, and stable appearance, the regenerated granules can be directly used in spinning synthetic fibers, injection molding food packaging containers, manufacturing various PET plastic products, and other applications, satisfying the demands of high-end downstream customers.
Q3: What types of PET bottle flake feedstocks can this equipment process?
A: The equipment is compatible with cold-washed and hot-washed PET bottle flakes, including mineral water, beverage, edible oil, industrial PET scrap, and transparent or colored PET flakes, offering broad applicability.
Q4: What are the delivery time and warranty period for this equipment?
A: Delivery typically takes 70–80 working days, and the warranty lasts 13 months from the bill of lading date. During the warranty period, professional after-sales maintenance services are provided.
Q5: Which brands are used for the equipment’s core components?
A: Motors can be selected from international brands like Siemens, ABB, Weg, or top domestic manufacturers; bearings may come from NSK, SKF, INA, FAG, or leading domestic suppliers; inverters are chosen from ABB, FUJI, Delta, Siemens, or similar brands, ensuring reliable operation.