ZTE Series Co-Rotating Parallel Twin-Screw Extruders

ZTE series co-rotating parallel twin-screw extruders

As an economical and practical product line of Zhuoyue, the ZTE series co-rotating parallel Twin Screw Extruder Manufacturer is specially designed for customers with basic production needs. It maintains the core structural advantages of Zhuoyue’s extruder products, while optimizing the configuration to achieve a more favorable cost performance. The ZTE series is suitable for processing general polymer materials such as general plastics, modified plastics with low filling amount, and conventional masterbatches, which can meet the daily production needs of most small and medium-sized enterprises with stable performance and low maintenance cost.

Zhuoyue has been committed to providing cost-effective extrusion solutions for small and medium-sized enterprises (SMEs) in the plastic processing industry for over a decade, and the ZTE series is the crystallization of this commitment. Unlike high-end extruder models that focus on ultra-high torque and speed for complex material processing, the ZTE series is optimized for the most common production scenarios in the market, focusing on stability, ease of operation, and low total cost of ownership (TCO). For SMEs that mainly process PP, PE, ABS, PS and other general plastics, or modified plastics with filling amount below 30%, the ZTE series can fully meet production requirements without the need to invest in expensive high-performance equipment, effectively reducing the initial investment threshold and operational risks.

The core structural design of the ZTE series inherits Zhuoyue’s mature Twin Screw Extruder Supplier technology, including the co-rotating parallel screw structure, modular barrel design, and precision-machined screw elements. The co-rotating parallel design ensures uniform material mixing and melting, avoiding the problem of uneven material plasticization that is common in low-cost single-screw extruders, thus improving the quality of finished products and reducing material waste. The modular barrel design allows for easy disassembly and maintenance, and damaged barrel sections can be replaced individually instead of the entire barrel, greatly reducing maintenance costs and downtime. The screw elements are made of high-quality alloy steel with heat treatment, which has good wear resistance and can adapt to the long-term processing of general plastics and low-filled modified plastics, extending the service life of key components.

In terms of operation and control, the ZTE series adopts a simplified but practical control system, which is easy to learn and operate, even for operators without professional technical background. The control panel is equipped with clear digital displays for temperature, screw speed, and feeding rate, and the parameters can be adjusted with one key, realizing precise control of the production process. At the same time, the system is equipped with basic fault alarm functions, such as over-temperature alarm, overload alarm, and lack of material alarm, which can timely remind operators of abnormal conditions and avoid equipment damage and production accidents. The overall design of the equipment fully considers the ergonomics, with a reasonable layout of operation buttons and observation windows, making daily operation and inspection more convenient.

Another advantage of the ZTE series is its high compatibility with auxiliary equipment. It can be seamlessly connected with common auxiliary equipment in the market, such as material dryers, mixers, pelletizers, cooling conveyors, etc., to form a complete production line. Zhuoyue also provides customized matching suggestions according to customers‘ actual production needs, helping customers optimize the production line layout and improve overall production efficiency. Whether it is pelletizing production of general plastic particles, modification of low-filled plastics, or production of conventional color masterbatches and functional masterbatches, the ZTE series can be flexibly adapted, with a production capacity range from 10kg/h to 800kg/h covering different production scales of SMEs.

From the perspective of after-sales service, Zhuoyue provides a comprehensive after-sales guarantee for the ZTE series to solve customers‘ worries. The product has a 12-month warranty period, and the core components such as the transmission system and motor have an extended warranty option. Zhuoyue’s after-sales service team has professional technical personnel and a sound service network, which can provide on-site installation, commissioning, and training services for customers. For common equipment failures, the after-sales team can provide remote technical support within 2 hours, and if on-site maintenance is required, the service personnel can reach the customer’s factory within 48 hours in most regions. Zusätzlich, Zhuoyue also provides a sufficient supply of spare parts, and common spare parts such as screw elements, barrel liners, and seals can be delivered within 3 working days, ensuring that the equipment downtime is minimized.

In the global plastic processing market, SMEs account for more than 70% of the total number of enterprises, and their production needs are characterized by „practical, stable, and economical“. The ZTE series is precisely developed to meet this market demand. Since its launch, it has been widely recognized by customers in more than 30 countries and regions, including China, Southeast Asia, the Middle East, and Eastern Europe. A large number of customer feedback shows that the ZTE series has stable production performance, the qualified rate of finished products is above 98%, the average failure-free operation time is more than 8000 hours, and the maintenance cost per 1000 hours of operation is less than 500 US dollars, which is far lower than the industry average. These data fully prove the high cost performance and reliability of the ZTE series, making it an ideal choice for SMEs to carry out plastic processing production.

ZTE model parameters

ZTE MODEL offers an excellent price/performance ratio and is designed with parameters to suit most materials. It adopts a reliable standard transmission system, which ensures stable operation while effectively controlling the overall cost, making it the first choice for customers who pursue practicality and economy.

The parameter design of the ZTE series fully considers the processing characteristics of general polymer materials, and each model is optimized for specific production scales and material types. The specific torque of 6 N.m/cm³ is a balanced choice for general plastic processing, which can ensure sufficient mixing and plasticization of materials while avoiding excessive energy consumption. The main motor power is matched with the screw diameter and output speed to maximize the energy utilization efficiency and reduce the energy consumption per unit output. The output speed of 600rpm is suitable for continuous and stable production of general plastics, and can be adjusted within a certain range according to different material characteristics and product requirements.

The slot depth ratio (D0/Di) of 1.55 or 1.55/1.68 is designed according to the different screw diameters. The smaller screw models (25, 35) adopt a fixed slot depth ratio of 1.55, which focuses on the uniformity of material conveying and mixing; the larger screw models (50, 65, 75, 95) provide two slot depth ratio options, which can be selected according to customers‘ specific material filling amount and product requirements. For example, when processing modified plastics with a filling amount of 20-30%, the slot depth ratio of 1.68 can provide a larger material storage space, improve filling rate and production capacity, while the 1.55 ratio is more suitable for pure resin or low-filled materials, ensuring better mixing effect.

Model	Specific torque（N.m/cm³）	Main motor power（Kw）	Output speed	Slot depth ratioD0/Di
25	6	7.5	600	1.55
35	6	18.5	600	1.55
50	6	55	600	1.55/1.68
65	6	110	600	1.55/1.68
75	6	160	600	1.55/1.68
95	6	300	600	1.55/1.68

Each model of the ZTE series has clear application positioning to meet the diverse needs of SMEs:

• ZTE 25: The smallest model in the series, with a main motor power of 7.5Kw, is suitable for small-batch production of laboratory samples, trial production of new products, or small-scale production of masterbatches by micro-enterprises. Its compact structure takes up less space and is easy to move and install, making it an ideal choice for R&D laboratories and small workshops.
• ZTE 35: With a main motor power of 18.5Kw, it is suitable for small and medium-sized batch production of general plastics and low-filled modified plastics, such as daily plastic products, simple plastic profiles, usw. It has a good balance between production capacity and energy consumption, and is the most widely used model in the ZTE series.
• ZTE 50: Equipped with a 55Kw main motor, it can meet the medium-scale production needs of SMEs, with a production capacity of 100-300kg/h for general plastics. It is suitable for the production of plastic particles, pipe fittings, and sheet materials, and the dual slot depth ratio options make it more flexible in adapting to different material formulas.
• ZTE 65: With a 110Kw main motor, it is a medium and large model in the ZTE series, with a production capacity of 200-500kg/h, suitable for SMEs with relatively large production scales. It can stably process modified plastics with a filling amount of up to 30%, and is widely used in the production of automotive interior parts, home appliance shells and other products.
• ZTE 75: Equipped with a 160Kw main motor, the production capacity can reach 300-600kg/h, which is suitable for large-scale production of general plastics and modified plastics by SMEs. Its high torque and large slot depth ratio ensure efficient material processing and stable product quality, and it is often used in the production of plastic profiles, plates and other products with high output requirements.
• ZTE 95: The largest model in the ZTE series, with a 300Kw main motor and a production capacity of 500-800kg/h, is suitable for large-scale SMEs or enterprises that need to expand production capacity. It can handle continuous production tasks for a long time, and the optimized transmission system ensures low noise and low vibration during high-load operation, reducing the impact on the production environment.

In addition to the core parameters listed in the table, the ZTE series also has a number of detailed design parameters to ensure stable operation and product quality:

• Screw diameter accuracy: The tolerance of the screw diameter is controlled within ±0.05mm to ensure the uniformity of the material gap during conveying and mixing, avoiding local over-shear or insufficient mixing.
• Barrel heating zone: The number of heating zones is 5-9 (depending on the model), and each zone is independently controlled, with a temperature control accuracy of ±1℃, ensuring precise control of the material melting process.
• Cooling system: Equipped with air cooling or water cooling system (optional according to the model), which can quickly cool the barrel and screws, prevent material overheating and decomposition, and adapt to continuous production for a long time.
• Feeding system: Adopt a frequency conversion speed-regulating feeding machine, with a feeding accuracy of ±1%, ensuring stable material supply and avoiding uneven feeding caused by material bridging or arching.
• Transmission system: Adopt a hard tooth surface gearbox with a transmission efficiency of ≥95%, low noise (≤85dB), and a service life of more than 10 years under normal maintenance.

The parameter design of the ZTE series is not only based on the current market demand, but also has a certain forward-looking, which can adapt to the future development of SMEs. For example, the motor and electrical control system of all models adopt energy-saving designs, which can save 10-15% of energy compared with traditional extruders of the same type, in line with the global trend of energy conservation and emission reduction. At the same time, the equipment reserves expansion interfaces, and customers can upgrade the control system, feeding system and other components according to their own development needs, without replacing the entire equipment, further reducing the long-term investment cost.

Application scenarios of ZTE series

The ZTE series, with its high cost performance and stable performance, is widely used in various general plastic processing scenarios, covering multiple fields such as daily necessities, Konstruktion, electronics, and automotive accessories. The following are the main application scenarios and corresponding processing requirements:

• General plastic particle production: This is the most common application scenario of the ZTE series, mainly processing PP, PE, ABS, PS, HIPS and other pure resins or recycled plastics into particles. The ZTE series can ensure the uniform particle size and density of the finished product, with a qualified rate of more than 99%. For recycled plastic processing, the equipment can be equipped with a degassing device to remove volatile gases in the material, improving the quality of recycled particles.
• Low-filled modified plastic production: For modified plastics with a filling amount of 10-30% (such as calcium carbonate filled PE/PP, talc filled ABS), the ZTE series can achieve uniform dispersion of fillers, avoiding agglomeration of fillers and affecting the mechanical properties of the product. It is widely used in the production of low-cost plastic parts such as plastic chairs, storage boxes, and toy shells.
• Conventional masterbatch production: Including color masterbatches, filling masterbatches, and functional masterbatches (antistatic, anti-UV), the ZTE series can ensure uniform mixing of pigments, fillers and additives with the carrier resin, with a coloring uniformity of ≥98%, meeting the color requirements of various plastic products. The small models (ZTE 25/35) are suitable for small-batch customized production of masterbatches, while the large models (ZTE 65/75/95) are suitable for large-scale mass production.
• Simple plastic profile extrusion: Such as PVC window and door profiles, PE plastic steel profiles, PP decorative profiles, usw. The ZTE series can provide stable extrusion pressure and speed, ensuring the dimensional accuracy of profiles (tolerance ≤±0.1mm), and the surface finish of products meets the industry standards. The modular design of the die head makes it easy to replace different profile molds, realizing the flexible production of multiple varieties.
• Plastic pipe production: For small and medium-diameter PE/PPR water supply pipes, PVC drainage pipes, etc., the ZTE series can match the pipe extrusion die head and sizing sleeve to achieve continuous and stable pipe production. The temperature control accuracy and screw speed stability of the equipment ensure the wall thickness uniformity of the pipe, and the product pass rate is above 98%.
• Sheet and film extrusion (auxiliary): When equipped with a corresponding sheet/film die head, the ZTE series can be used for the extrusion of thin sheets and films of general plastics, such as PE packaging films, PP sheet materials for stationery, usw. Although it is not specially designed for high-precision film/sheet production, it can fully meet the basic production needs of SMEs for low-end products.

For different application scenarios, Zhuoyue Twin Screw Extruder Machine Factory also provides targeted configuration suggestions and process optimization solutions to help customers maximize the performance of the ZTE series:

• For particle production: It is recommended to configure a water ring pelletizer or air-cooled pelletizer, and optimize the screw speed and temperature parameters according to the melting point of the material to ensure the smooth cutting of particles and reduce dust generation.
• For modified plastic production: It is recommended to add a side feeding device for the addition of fillers and additives, and adjust the mixing elements of the screw to enhance the dispersion effect of fillers and avoid the reduction of product performance caused by uneven mixing.
• For masterbatch production: It is recommended to use a high-speed mixer for pre-mixing of materials, and control the feeding speed and screw speed of the extruder to ensure the full mixing of pigments and resins, and improve the coloring effect of masterbatches.
• For profile/pipe production: It is recommended to configure a vacuum sizing tank and a traction machine with constant speed control, and optimize the cooling water temperature and traction speed to ensure the dimensional stability of profiles/pipes.

Case verification: A plastic processing SME in Zhejiang, China, purchased a ZTE 50 model in 2022 to produce PP filled modified plastics (filling amount 25%). Before using the ZTE series, the enterprise used a second-hand single-screw extruder, with a product qualified rate of only 85%, and frequent equipment failures, with monthly maintenance costs of about 3000 yuan. After switching to the ZTE 50, the product qualified rate increased to 98.5%, the equipment failure rate was reduced by more than 90%, the monthly maintenance cost was less than 500 yuan, and the production capacity increased from 150kg/h to 220kg/h. The investment in the equipment was recovered within 8 months, and the annual profit increased by more than 200,000 yuan. This case fully demonstrates the advantages of the ZTE series in improving production efficiency, reducing costs and improving product quality for SMEs.

Advantages of ZTE series compared with similar products

In the market of economical twin-screw extruders, the ZTE series has obvious competitive advantages compared with similar products of other brands, mainly reflected in the following aspects:

• Cost performance advantage: The price of the ZTE series is 10-20% lower than that of similar products of international brands, and 5-10% lower than that of domestic high-quality brands, while maintaining the same or even higher performance. The core components (motor, gearbox, control system) are all selected from well-known domestic brands with reliable quality, which ensures the stability of the equipment while controlling the cost.
• Structural reliability: Adopt Zhuoyue’s patented screw element design and barrel processing technology, the screw service life is 30% longer than that of similar products, and the barrel wear resistance is increased by 25%. The transmission system has passed 10,000 hours of fatigue test, and the failure rate is less than 0.5% within the warranty period.
• Energy saving and environmental protection: The motor adopts frequency conversion energy-saving design, and the energy consumption per unit output is 10-15% lower than that of traditional extruders. The equipment is equipped with a low-noise design, and the noise during operation is ≤85dB, which meets the national environmental protection standards and improves the working environment of the workshop.
• Easy maintenance: The modular design of the whole machine makes the disassembly and assembly of components more convenient. The daily maintenance only needs simple tools, and the maintenance time of common faults is shortened by more than 50% compared with similar products. Zhuoyue provides detailed maintenance manuals and video tutorials, which can help customers‘ maintenance personnel quickly master maintenance skills.
• Customization flexibility: Although the ZTE series is a standardized product, Zhuoyue can provide customized modifications according to customers‘ special needs, such as adding degassing ports, changing slot depth ratio, replacing special material screw elements, usw. The customization cycle is only 7-15 days, which is much shorter than the industry average of 20-30 days.

Compared with low-cost counterfeit products on the market, the ZTE Twin Screw Extrusion Machine Wholesale series has essential advantages in quality and after-sales service:

• Counterfeit products often use inferior materials for screws and barrels, with a service life of only 3-6 months, while the ZTE series can be used for more than 2 years under normal use;
• Counterfeit products have simple control systems, low temperature control accuracy, and unstable product quality, while the ZTE series has precise temperature control and stable operation, ensuring the consistency of finished products;
• Counterfeit products have no after-sales service guarantee, and once a failure occurs, customers need to bear high maintenance costs and long downtime, while the ZTE series has a sound after-sales service system to ensure the continuity of production;
• Counterfeit products do not meet national safety and environmental protection standards, and there are potential safety hazards such as electrical leakage and excessive noise, while the ZTE series has passed national safety certification and environmental protection testing, and can be used with confidence.

Market feedback shows that among the customers who purchased the ZTE series, 95% of them are satisfied with the performance and cost performance of the equipment, and 80% of them will choose to repurchase Zhuoyue’s products when expanding production capacity or updating equipment. This fully proves the market recognition and competitive advantage of the ZTE series.

Installation, commissioning and operation precautions of ZTE series

To ensure the stable operation and long service life of the ZTE series, correct installation, commissioning and standardized operation are crucial. The following are the key points of installation, commissioning and operation:

Installation precautions

• Site requirements: The installation site should be flat and solid, with a bearing capacity of ≥5t/m², and there should be no vibration source around to avoid affecting the operation stability of the equipment. The site should have sufficient space for operation, maintenance and material storage, with a reserved space of ≥1.5m around the equipment.
• Power supply requirements: The power supply should meet the rated power of the equipment, with a voltage fluctuation range of ≤±5%, and a dedicated circuit and leakage protector should be configured. The grounding resistance of the equipment should be ≤4Ω to ensure electrical safety.
• Water and gas supply: If the equipment is equipped with a water cooling system, the water supply pressure should be 0.2-0.4MPa, and the water quality should be clean and free of impurities to avoid blocking the cooling pipeline. The air source (if equipped with pneumatic components) should have a pressure of 0.5-0.7MPa, and be equipped with a dryer and oil-water separator to ensure the normal operation of pneumatic components.
• Installation and leveling: Use a level to adjust the level of the equipment, with a level error of ≤0.1mm/m, to ensure the coaxiality of the screw and the smooth operation of the transmission system. Fix the equipment with foundation bolts to prevent displacement during operation.

Commissioning key points

• Empty running test: Before feeding, carry out empty running test for 1-2 hours, check the operation of the transmission system, the rotation direction of the screw, and the temperature control accuracy of each heating zone. The empty running speed should be gradually increased from low speed (100rpm) to rated speed (600rpm), and abnormal noise, vibration and temperature rise should be checked during the process.
• Material trial run: Use clean general plastic particles (such as PP) for trial run, start feeding at low speed, and gradually increase the feeding amount and screw speed while observing the melting state of the material, extrusion pressure and product quality. Adjust the temperature of each heating zone according to the melting condition of the material to ensure full melting and no decomposition of the material.
• Parameter optimization: According to the trial run results, optimize the screw speed, feeding speed, temperature and other parameters to find the best process parameters for the production of specific materials, and record them for daily operation reference.

Operation precautions

• Pre-operation inspection: Before starting the machine every day, check the oil level of the gearbox, the tightness of the electrical connections, the cleanliness of the feeding hopper, and the operation of the cooling system to ensure that all parts are in normal condition.
• Material requirements: The processed materials should be clean and free of metal impurities to avoid damaging the screw and barrel. For hygroscopic materials (such as ABS, PA), they should be fully dried before processing to avoid bubbles and other defects in the product.
• Operation process: The machine should be started and stopped in accordance with the operating procedures. It is strictly forbidden to start the machine with material in the barrel, and it is strictly forbidden to stop the machine suddenly during operation (except for emergency situations). When changing materials, the barrel and screw should be cleaned to avoid material mixing and affecting product quality.
• Daily maintenance: Clean the equipment surface and feeding hopper after daily operation, check the wear of the screw and barrel regularly, and lubricate the moving parts according to the maintenance manual to extend the service life of the equipment.
• Emergency treatment: In case of equipment failure (such as overload, over-temperature, abnormal noise) during operation, stop the machine immediately, cut off the power supply, and contact the after-sales service personnel for treatment. It is strictly forbidden to disassemble the equipment without authorization to avoid expanding the fault.

Zhuoyue will send professional technicians to carry out on-site installation and commissioning for customers who purchase the ZTE series, and provide systematic operation and maintenance training for the customer’s operators and maintenance personnel, including theoretical training and on-site practical operation. The training content covers equipment structure, operating procedures, process parameter adjustment, common fault diagnosis and treatment, daily maintenance and other aspects, ensuring that the customer’s staff can independently operate and maintain the equipment.

Future development and upgrade of ZTE series

With the continuous development of the plastic processing industry and the increasing environmental protection requirements, Zhuoyue will continue to upgrade and optimize the ZTE series to meet the changing market demand:

• Energy saving upgrade: Further optimize the motor and control system, adopt permanent magnet synchronous motor and intelligent energy-saving control algorithm, and reduce the energy consumption per unit output by another 5-8% on the basis of the existing energy saving effect.
• Intelligence upgrade: Add an intelligent monitoring system to realize real-time monitoring of equipment operating parameters (temperature, speed, pressure, current), fault early warning and remote diagnosis functions, helping customers realize unmanned operation and remote management of the equipment.
• Environmental protection upgrade: Strengthen the degassing and dust removal functions of the equipment, optimize the exhaust system, and further reduce the emission of volatile organic compounds (VOCs) and dust, meeting the higher environmental protection emission standards.
• Material adaptation upgrade: Develop special screw elements and barrel materials to expand the application range of the ZTE series, so that it can process some special materials (such as biodegradable plastics, recycled plastics with high impurity content) on the basis of general plastics.
• Modular upgrade: Further optimize the modular design of the equipment, reduce the number of parts, improve the interchangeability of parts, and further shorten the maintenance time and reduce maintenance costs.

At the same time, Zhuoyue will continue to listen to customer feedback, collect application cases and improvement suggestions of the ZTE series in different regions and different application scenarios, and incorporate valuable suggestions into the product upgrade plan to make the ZTE series more in line with the actual production needs of customers. Zhuoyue is committed to making the ZTE series not only an economical and practical extruder product, but also a product that can keep up with the development of the industry and help SMEs achieve sustainable development.

In conclusion, the ZTE series co-rotating parallel twin-screw extruders is a high-cost performance product tailored for SMEs by Zhuoyue. It has the advantages of stable performance, easy operation, low maintenance cost and wide application range, and can fully meet the basic production needs of SMEs in plastic processing. With the continuous upgrade and improvement of the product, the ZTE series will continue to play an important role in the plastic processing industry, helping more SMEs reduce production costs, improve product quality and enhance market competitiveness.