The Water-Cooled Plastic Granulator: An Efficient Core Equipment for Plastic Recycling and Regeneration

You are here: Home > NEWS > Company News

- 2026-04-16 -

As a primary manufacturer with 17 years of experience in the R&D and production of plastic machinery, Lunte Plastic Machinery has consistently focused on providing global clients with highly stable, high-output plastic granulation solutions. Among our offerings, the **Water-Cooled Plastic Granulator** stands out as a benchmark machine in the field of waste plastic recycling and regeneration. Renowned for its superior temperature control and broad raw material compatibility, it is widely utilized for the regenerative granulation of various plastics—including PP/PE films, woven bags, waste film scraps, and bottle flakes—thereby empowering enterprises to maximize the value of their circular economy initiatives.

---

## I. Core Advantages of the Water-Cooled Plastic Granulator

The water-cooled granulator utilizes water as its cooling medium to rapidly solidify molten plastic through precise temperature regulation. Compared to air-cooled equipment, it offers distinct core advantages:

✅ **Precise Temperature Control, Superior Pellet Quality:** The water-cooling system rapidly dissipates heat from the melt, preventing plastic degradation caused by overheating. The resulting pellets are uniform, plump, and glossy—free from defects such as yellowing or air bubbles—thereby directly enhancing the market value of the recycled material.

✅ **Compatible with High-Moisture and High-Impurity Raw Materials:** Designed to handle scenarios involving washed waste films or water-laden scraps, the water-cooled granulator can process these materials directly without the need for additional drying steps, significantly reducing energy consumption and production costs.

✅ **Stable Output, Ideal for Large-Scale Production:** The robust water-cooling structure enables continuous, long-duration operation with minimal temperature fluctuation, ensuring uninterrupted 24-hour production to meet the high-capacity demands of large-scale recycling facilities.

✅ **Broad Raw Material Compatibility:** Compatible with a wide range of thermoplastic plastics—including PP, PE, ABS, and PS—the system achieves efficient granulation regardless of the material form, whether it be films, woven bags, bottle flakes, or industrial scrap trimmings.

## II. Detailed Overview of Lunte’s Three Flagship Water-Cooled Granulator Models

Based on the specific raw material characteristics, production capacity requirements, and operational environments of our diverse clientele, we have introduced three core water-cooled granulation systems designed to meet the full spectrum of needs—ranging from small-scale processing workshops to large-scale recycling enterprises:

### 1. Three-Stage Extrusion Granulation System Dedicated to Washed Waste Film (Water-Strand Cutting)

**Applicable Materials:** Washed waste materials characterized by high impurity and moisture content—including discarded PE/PP films, agricultural films, greenhouse films, woven bags, and similar items.

**Key Features:**

- **Three-Stage Tandem Extrusion Structure:** Implements a three-tier processing sequence—"pre-plasticization, main plasticization, and fine plasticization"—to thoroughly eliminate moisture, impurities, and residual contaminants from the raw material. This effectively resolves common industry pain points associated with waste film granulation, such as die clogging and impurity-laden pellets.

- **Water-Strand Cooling Process:** The polymer melt is rapidly cooled and solidified within a water tank before being cut into pellets. The resulting pellets feature high hardness and uniform dimensions, making this process ideal for the production of recycled materials where superior pellet aesthetics are a critical requirement.

- **Standard Configuration:** Equipped with a hydraulic screen changer and an automatic feeding system to minimize manual intervention and significantly boost production efficiency. Single-machine output capacity ranges from 300 to 1000 kg/h, making it perfectly suited for integration into large-scale waste film recycling production lines.

- **Optimized Screw Design:** Features a screw structure specifically optimized for washed waste materials, offering robust conveying and degassing capabilities. It can directly process wet materials with a moisture content of 15%–20% without the need for pre-drying.

### 2. Single-Screw Water-Cooled Extrusion Granulation Line for PP/PE Films and Scrap Materials

**Applicable Scenarios:** Small to medium-sized processing plants handling clean PP/PE films, edge trims, woven bags, strapping bands, and other common waste materials.

**Key Features:**

- **Single-Screw Design:** Features a compact structure, minimal footprint, and low investment cost, making it ideal for startups or clients with moderate production requirements. With a single-unit output ranging from 100 to 800 kg/h, it offers flexible scalability to suit various production volumes.

- **Water-Cooled Strand Pelletizing System:** Simple to operate and easy to maintain—allowing even novices to quickly master the process—while simultaneously ensuring consistent pellet quality.

- **Standardized Force Feeding Unit:** Specifically designed for fluffy raw materials (such as films), this unit ensures efficient feeding and effectively prevents bridging or clogging issues.

- **Customizable Configuration:** The screw L/D ratio and die head structure can be customized to accommodate different types of PP/PE waste materials, enabling multi-purpose functionality within a single machine and effectively reducing equipment procurement costs.

### 3. Water-Ring Cutting Plastic Extrusion Granulation Line

**Applicable Scenarios:** Large-scale recycling enterprises requiring high production capacity and a high degree of automation; suitable for processing PP/PE bottle flakes, rigid plastics, high-flow plastics, and similar materials.

**Key Features:**

- **Water-Ring Pelletizing Process:** Following melt extrusion, the material is cut into pellets directly within a water ring by high-speed rotating blades. This eliminates the need for strand pulling, resulting in higher pelletizing efficiency. The resulting pellets are cylindrical in shape, offering a more uniform appearance and superior flowability, which facilitates subsequent processing.

- **Closed-Loop Water Cooling System:** Ensures uniform cooling and rapid pelletizing speeds. Single-machine output capacity ranges from 250 to 800 kg/h, making it the preferred choice for large-scale recycled material production.

- **High Degree of Automation:** Integrates automatic feeding, automatic screen changing, automatic pelletizing, and automatic dewatering/drying systems. The entire production line requires only 1–2 operators, significantly reducing labor costs.

- **Optimized Screw Structure:** Specifically designed for rigid plastics and bottle flakes, ensuring uniform plasticization and thorough degassing. This enables the production of high-purity recycled pellets that meet the stringent quality requirements of high-end clients.

## III. Key Technological Highlights of Lunte Water-Cooled Granulators

With 17 years of deep industry expertise, our equipment surpasses industry standards in both detail and performance:

🔧 **Customized Screw Design:** Screws with varying structures (e.g., barrier-type, separation-type) are custom-designed to suit the specific characteristics of different raw materials, thereby enhancing plasticization efficiency, minimizing melt shear heat, and preventing plastic degradation.

Precise control over temperature zones and water-cooling flow rates ensures process stability and consistent granule quality.

🛡️ **Highly Wear-Resistant Core Components:** The screw and barrel are constructed from 38CrMoAl alloy steel and undergo a nitriding treatment. This results in high hardness and exceptional wear resistance—offering a service life more than three times that of ordinary steel—thereby significantly reducing equipment maintenance costs.

♻️ **Energy-Efficient Design:** An optimized heating and cooling system delivers 15% to 20% energy savings compared to traditional equipment. Additionally, the system is equipped with a waste heat recovery unit to further minimize production energy consumption.

🔧 **Comprehensive Process Integration:** We offer fully customized production lines—ranging from crushers, washing lines, and feeding systems to granulators and storage silos—providing a one-stop solution for all our clients' recycled plastic production needs.

---

## IV. Why Choose Lunte Plastic Machinery?

✅ **17 Years as a Direct Manufacturer—Quality Guaranteed:** From core component fabrication to final machine assembly, we manage the entire production process in-house. Every stage undergoes rigorous quality control, and each machine undergoes a continuous 72-hour operational test prior to shipment to ensure stable and reliable performance.

✅ **Direct-from-Factory Sales—Exceptional Value:** By eliminating intermediaries and markups, we offer our clients the most competitive pricing available. Furthermore, we can customize equipment configurations to align precisely with client requirements, thereby avoiding unnecessary costs and waste.

✅ **Comprehensive Lifecycle After-Sales Service:** We provide complimentary installation and commissioning, technical training, and lifetime maintenance support. With a global rapid-response network, we address client needs promptly, ensuring complete peace of mind.

✅ **Extensive Industry Experience:** Having served clients across more than 30 countries and regions worldwide, we possess a deep understanding of the unique raw material characteristics and production demands of diverse markets, enabling us to deliver highly targeted granulation solutions. ---

## V. Applicable Industries and Raw Materials

Our water-cooled granulators serve a wide range of industries, including:

- **Waste Plastic Recycling & Regeneration:** PE/PP films, agricultural films, woven bags, PET bottle flakes, jumbo bags, etc.

- **Plastic Packaging Industry:** Recycling of scrap materials such as film trimmings, strapping bands, and plastic bags.

- **Plastic Processing Industry:** Granulation and recycling of edge trims and defective products generated during injection molding, film blowing, and extrusion processes.

- **Environmental Protection Sector:** Resource recovery and regeneration of plastic waste from both domestic and industrial sources.

---

## VI. Contact Us

Whether you require a compact standalone granulator or a large-scale fully automated granulation production line, Lunter Plastic Machinery is ready to provide you with customized solutions.

📧 Email: lunterxiaolan@qq.com

📞 Phone: +86-18757111384

🌐 Website: www.zhengpinhang.com

📍 Address: Light Industry Zone, Yunjiang Standard Factory, Ruian City, Zhejiang Province, China

We look forward to partnering with clients worldwide to drive the development of the plastic circular economy and create a greener future together!

Previous: # Lunt's New Generation Air-Cooled Granulator Launched! **Exclusive and Innovative PLC Intelligent Control System**

Next: No Information

NEWS Categories

Related News