Twin screw extruder

65T Triple Screw Extruder

65T Triple Screw Extruder

The 65T triple screw extruder is an efficient equipment specially designed by Nanjing Kelongwell Chemical Machinery Co., Ltd. for high filling mixing and plastic granulation.
Adopting a triangular arrangement of three screws to form three meshing zones, completely eliminating the mixing dead zone.
Compared to traditional twin screw, the dispersion uniformity is improved by 30%, and the unit energy consumption is reduced by 15-20%. This three screw extruder is widely used in the fields of colorants, modified materials, and engineering plastics, and is an ideal choice for high production capacity and high dispersion requirements.

Features

Product Overview

The 65T triple screw extruder represents a revolution in the field of polymer processing. It is designed specifically for plastic granulation of high filling mixtures, high concentration colorants, and special engineering plastics, successfully filling the gap between traditional twin screw in dispersion mixing and ultra-high production capacity requirements. The 65T triple screw extruder adopts a unique triangular arrangement screw geometry structure, completely eliminating the common "mixing dead zone" in traditional extruders. For production enterprises that pursue excellent melt uniformity while significantly reducing unit energy consumption, this triple screw extruder is an ideal choice.

 

Core Features

·Triangular arrangement screw geometry structure: Three screws are arranged in an equilateral triangle, forming three interlocking regions. Compared with traditional twin screw, this design exponentially increases the interfacial exchange area of materials during the melting process, greatly improving the efficiency of dispersion and distribution mixing.
·High torque and high-speed capability: This 65T triple screw extruder is equipped with a high specific torque gearbox, which can handle high viscosity materials or high filling mineral formulas with ease, ensuring stable operation under high load plastic granulation conditions.
·Enhanced self-cleaning function: Advanced spline type threaded components are used to achieve precise self-cleaning between the three screws, effectively reducing material retention time, preventing thermal sensitive material degradation, and ensuring product quality.
·Modular barrel design: The barrel is divided into functional sections and equipped with multiple independent heating/cooling systems, which can achieve precise temperature curve control for complex processes such as reactive extrusion and high filling.
·Ultra high filling capacity: Compared with traditional twin screw extruders, this triple screw extruder can stably achieve up to 85% filling of fillers (such as calcium carbonate, carbon black, titanium dioxide), significantly improving dispersion uniformity.

 

Technical parameters

Parameter Specification
Screw diameter 62.4mm
L/D 28:1-56:1 (modular combination)
Main motor power 160-280 kW (AC variable frequency)
Screw speed 300-600 rpm
Capacity 600-1500 kg/h (depending on the formula)
High torque ≥ 15 Nm/cm ³
Heating section 8-12 (electric heating/water cooling)

Noted: Details depend on your requirements and need.

 

Equipment advantages (why choose this model)

When traditional mixing equipment cannot meet the requirements of high filling and high dispersion, the 65T triple screw extruder stands out among many triple screw extruder products with its unique technical advantages.
·Better dispersion performance than twin screw: Traditional twin screw mainly relies on shear stress, while the 65T triple screw extruder introduces a "dispersion distribution" synergistic effect. The third screw enables continuous exchange of materials between the three meshing zones, especially in the granulation of colorants, which can improve the uniformity of pigment dispersion by more than 30%.
·Lower unit energy consumption: Despite higher production capacity, the specific mechanical energy (SME) required to achieve the same melt quality is significantly reduced compared to twin screw (about 15-20%), effectively reducing the per ton electricity consumption in the plastic granulation process.
·Compact footprint: This 65T triple screw extruder can achieve the production capacity level of a typical 90mm twin screw, but the overall structure is more compact, helping customers optimize their factory space layout.
·Low viscosity heat generation: The superior heat transfer efficiency brought by three screws effectively avoids local overheating, making it an ideal choice for processing shear sensitive engineering plastics such as PVC and thermoplastic elastomers.

 

Application Fields

The wide applicability of the 65T triple screw extruder makes it the preferred core equipment for high-end blending modification production lines:
·High concentration filling masterbatch: Production of high concentration filling masterbatch such as calcium carbonate, titanium dioxide, carbon black, etc. (filling amount can reach 85%).
·Engineering plastic modification: PP/PA/ABS and other reinforcement modifications (glass fiber, carbon fiber) can achieve uniform dispersion while maintaining fiber length.
·High end recycling and plastic granulation: Capacity enhancement, deodorization, and performance improvement of post consumer recycled materials (PCR).
·Special composite materials: XLPE (cross-linked polyethylene), TPE/TPV (thermoplastic elastomer), high viscosity hot melt adhesive.
·Reactive extrusion: processes such as polymer grafting and polymerization reactions that require strict residence time distribution.

 

Customized services (OEM/ODM)

Nanjing Kelongwell Chemical Machinery Co., Ltd. is well aware that each production line has unique process requirements. We provide comprehensive OEM and ODM customization services around the 65T triple screw extruder platform:
·Customized screw combination: Based on the rheological properties of your material (MFI, viscosity, filler characteristics), design a specialized combination of threaded elements (shear block, toothed disc, reverse element, etc.).
·Barrel and feeding configuration: Multiple side feeding, liquid injection system, and high vacuum exhaust system can be configured to meet the process requirements of different plastic granulation formulas.
·Customization of control system: Provide fully automatic PLC control (supporting remote monitoring of Industry 4.0) or economical manual control panel to meet different investment and operational needs.
·Turnkey solution for the entire production line: From raw material transportation, metering and mixing, to plastic granulation (air-cooled drawing, water ring cutting, underwater cutting), we provide complete integrated services for the entire production line.

 

Frequently Asked Questions (FAQ)

Q1: What are the core differences between this 65T triple screw extruder and other triple screw extruders on the market?
A: Some triple screw extruders on the market simply add one screw on top of the twin screw, without optimizing the center distance and arrangement. The 65T triple screw extruder launched by Nanjing Kelongwell Chemical Machinery Co., Ltd. adopts a true co rotating triangular arrangement structure, ensuring that each screw participates in material exchange in three meshing zones during each rotation, eliminating mixing dead zones. In high filling plastic granulation applications, this design can significantly improve dispersion uniformity and avoid "white spots" or "agglomeration" problems, which are difficult to achieve with ordinary three screw structures.


Q2: Can this equipment handle highly abrasive materials such as fiberglass and calcium carbonate when used for plastic granulation?
A: Absolutely possible. The 65T triple screw extruder is designed for high abrasive plastic granulation conditions and can be equipped with a high wear-resistant bimetallic barrel and threaded components treated with tungsten carbide on the surface. Compared to traditional twin screw or other triple screw extruders, our wear-resistant solution can significantly extend the service life of core components, especially suitable for large-scale production of fiberglass reinforced and highly filled calcium carbonate masterbatch.


Q3: Is the energy consumption of three screws necessarily higher than that of twin screws?
A: This is a common misconception. Although the motor power of the 65T triple screw extruder has increased due to increased production capacity, the unit energy consumption (kWh/kg) is actually lower. Because the three screw structure can achieve higher mixing efficiency at lower specific mechanical energy (SME). In actual plastic granulation production lines, compared to twin screw machines that achieve the same production capacity, this equipment can usually reduce the average power consumption per ton by 15-20%.


Q4: Will the maintenance cost of the 65T triple screw extruder be higher?
A: Our modular design fully considers maintenance convenience. Although the 65T triple screw extruder has three screws, its screw core shaft adopts a quick disassembly structure, making it very convenient to extract and reset. In addition, due to the three screws sharing the shear load together, the wear distribution is more uniform, and the maintenance cycle of actual continuous production is often longer than that of twin screw equipment operating at high loads. The comprehensive improvement of plastic granulation efficiency and the extension of maintenance intervals have significant advantages in total cost of ownership.


Q5: What plastic granulation systems can this 65T triple screw extruder be adapted to?
A: The 65T triple screw extruder can flexibly match various plastic granulation systems, depending on the material characteristics:
·Wind cooled strip cutting: suitable for conventional reinforced or filled plastics.
·Water ring granulation: suitable for plastic granulation of high-yield, general thermoplastic plastics.
·Underwater granulation: suitable for high-yield, high viscosity, soft or viscous materials (such as TPE, TPV, hot melt adhesive).

The technical team of Nanjing Kelongwell Chemical Machinery Co., Ltd. will match the most suitable die surface cutting solution for your 65T triple screw extruder production line based on your material characteristics and production capacity requirements.

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