Milk Bottle Recycling Pelletizing Machine

Product Overview

The milk bottle recycling pelletizing machine is a single-screw, specialized regenerative pelletizing device for rigid plastic flakes. It is designed specifically for rigid plastic fragments that have already undergone preliminary crushing, enabling integrated processing from crushed material to recycled pellets. The equipment is compatible with various rigid plastic wastes such as HDPE, PP, and ABS, producing uniform and stable recycled pellets with a capacity ranging from 100 to 2000 kg/h, supporting 24-hour continuous operation. As a customized product, the machine can be tailored to meet specific customer production requirements. Featuring a mature and reliable single-screw structure, it boasts a low failure rate, eliminates the need for an additional crushing unit, and directly processes pre-crushed materials. With its low operational complexity and outstanding cost-effectiveness, it serves as a core piece of equipment in hard plastic recycling applications.

Technical Principle

This machine employs a single-screw extrusion process, suitable for pre-crushed rigid plastic flakes. Material is fed directly into the hopper and then into the barrel. Equipped with segmented ceramic heating bands, it achieves precise temperature control; combined with shear friction generated by screw rotation, this ensures thorough melting and plasticization of the rigid plastics. Subsequently, multi-stage filter dies remove sand and impurities, while venting systems eliminate moisture and volatile components, effectively guaranteeing the purity of the recycled pellets. Finally, the molten material is water-cooled and shaped before being cut into pellets, yielding finished pellets with impurity content ≤1% and particle size uniformity ≥95%, fully meeting the quality standards for recycled plastic pellets.

Core Configuration Parameters

1. Trademark: PURUI
2. Place of Origin: NANTONG
3. Brand: PURUI
4. Screw and Barrel Material: 38CrMoAlA alloy or bimetallic material, nitrogen-treated
5. Heating Method: Electric heating or electromagnetic heating
6. Heater Material: Cast aluminum, cast copper, mica, or ceramic heaters
7. Motor Brand: Siemens, ABB, Weg, or leading domestic brands
8. Pelletizing Method: Die-face pelletizing or strand-cutting pelletizing
9. Bearing Brand: NSK, SKF, INA, FAG, or top domestic brands
10. Inverter Brand: ABB, FUJI, Delta, Siemens
11. Main Motor Power: 30–355 kW
12. Capacity Range: 100–2000 kg/h
13. Finished Pellet Impurity Content: ≤1%
14. Particle Size Uniformity: ≥95%
15. Delivery Time: 70–80 working days
16. Warranty Period: 13 months from the bill of lading date

Core Advantages

1. Mature and Stable Single-Screw Structure: Featuring a proven single-screw design, the machine offers structural stability and a low failure rate, with annual downtime averaging less than 72 hours. Its production stability surpasses comparable equipment by 60%, ensuring reliable continuous operation.
2. Direct Processing of Pre-Crushed Materials: Eliminating the need for an additional crushing unit, it can directly handle pre-crushed plastic fragments, removing the secondary handling step after crushing and significantly improving process efficiency while reducing transportation costs.
3. Wear-Resistant Screw Extends Service Life: Made from 38CrMoAlA alloy or bimetallic material and nitrogen-treated, the screw withstands the high wear associated with hard materials. Alloy screws typically last over two years, cutting replacement costs by 40% and delivering superior long-term cost-effectiveness.
4. Thorough Plasticization Ensures Superior Pellet Quality: Through precise temperature control and screw-generated shear friction, rigid plastics are thoroughly melted and plasticized, resulting in dense recycled pellets with impurity content ≤1% and particle size uniformity ≥95%, meeting the raw material requirements of downstream plastic product manufacturers.
5. Low Operational Complexity and Outstanding Cost-Effectiveness: The machine features a simple operating procedure and minimal daily maintenance needs, allowing basic upkeep without requiring a specialized technical team. Combined with its low failure rate and reduced consumable costs, it delivers exceptional overall value.
6. Supports Continuous High-Efficiency Production: Capable of 24-hour continuous operation, with a single machine achieving up to 40 tons per day, it meets the large-scale capacity demands of hard plastic recycling operations.

Core Product Value

1. Simplifies the processing workflow, eliminating the need for secondary handling of crushed materials, thereby boosting production efficiency and reducing operating costs.
2. The wear-resistant screw design dramatically extends the equipment’s service life, lowering consumable replacement expenses and making long-term use more economical.
3. Produces high-quality recycled pellets that meet downstream manufacturing standards, helping recycling companies expand their sales channels.
4. Offers highly stable, continuous production capabilities, ensuring sufficient capacity for large-scale recycling operations and enabling businesses to scale up production.
5. Customizable design accommodates varying production volumes, flexibly addressing diverse customer needs.

Target Customer Base

This equipment primarily targets hard plastic recycling plants, plastic crushing enterprises, manufacturers of everyday plastic products, industrial solid waste treatment facilities, and recycled pellet producers. It provides efficient and reliable solutions for regenerating rigid plastics, helping these businesses achieve resource recovery from plastic waste.

Application Scenarios

The machine is suitable for pelletizing various types of pre-crushed rigid plastic waste, including HDPE plastic bucket fragments, PE pipe scraps, PP turnover box flakes, ABS/PS industrial edge scraps, PC engineering plastic fragments, and more. It is particularly well-suited for recycling HDPE fragments such as milk bottles, transforming diverse rigid plastic wastes into high-quality recycled pellets and promoting resource circularity.

Solutions to Industry Pain Points

1. Addresses the pain point of secondary handling and inefficient process integration after crushing: By directly processing pre-crushed materials, the machine eliminates the need for transport steps, enabling integrated processing from crushed material to recycled pellets, thus significantly improving workflow efficiency and reducing transportation costs and time losses.
2. Solves the issue of ordinary screws failing under heavy wear and high replacement costs: Utilizing nitrogen-treated 38CrMoAlA alloy or bimetallic screws, which offer excellent wear resistance and a normal service life exceeding two years, while reducing consumable replacement costs by 40%, effectively lowering long-term equipment expenses.
3. Tackles the challenge of complex equipment structures and difficult daily maintenance: Featuring a mature and stable single-screw design, the machine simplifies operation procedures and lowers maintenance barriers, allowing basic upkeep without requiring a specialized technical team, thereby reducing enterprise maintenance costs and technological dependency.

Frequently Asked Questions (FAQ)

Q1: What types of plastic can this milk bottle recycling pelletizing machine process?
A: The machine is compatible with HDPE, PP, ABS, PS, PC, and other rigid plastic wastes. It is especially suited for recycling HDPE fragments like milk bottles. Any rigid plastic flakes that have undergone preliminary crushing can be processed.
Q2: What is the machine’s capacity range? Can it be customized?
A: The standard capacity range is 100–2000 kg/h. As a customized product, it can be tailored to meet specific customer production needs, with a single machine capable of producing up to 40 tons per day.
Q3: How long is the warranty period? What is the service life of the core components?
A: The warranty lasts 13 months from the date of the bill of lading. Core components, such as the alloy screw, typically last over two years, and the machine experiences less than 72 hours of annual downtime, demonstrating outstanding production stability.
Q4: Does the machine require an accompanying crushing unit?
A: No, the machine is designed specifically for pre-crushed plastic fragments and can directly process pre-crushed materials, eliminating the need for an additional crushing unit and simplifying the production process.
Q5: What is the quality of the finished pellets?
A: The recycled pellets produced have impurity content ≤1%, particle size uniformity ≥95%, and exhibit thorough plasticization and high density, fully meeting the raw material requirements of downstream manufacturers of everyday plastic products and industrial plastic goods.