Single Screw plastic extruder is a kind of equipment widely used in the plastic processing industry. It is mainly composed of screw, barrel, heating and cooling system, transmission system and control system. Its working principle is to convey, compact, melt, plasticize and extrude plastic in the barrel through the rotating screw. This HQ-90 single screw extruder has a simple industrial design style in appearance and the main body color is off-white. It is equipped with a control panel for accurate setting and monitoring of various parameters of the extrusion process. The feed port is used to input plastic raw materials. After being processed by the screw, the plastic is extruded from the head in a molten state and can be used for subsequent granulation, extrusion molding and other processes. It is a key equipment in the process of plastic recycling, reuse and plastic product production.

Single Screw Plastic Extruder Infomation:

Single Screw Plastic Extruder Parameters: ( Manual Rotary Screen Changer )

Single Screw Plastic Extruder Features:

1. High energy efficiency: HQ-90 Single Screw Plastic Extruder performs well in terms of energy consumption, and its specific energy consumption is 30% lower than that of traditional extruders. This is due to its advanced design and optimized transmission system. For example, the transmission device it adopts is carefully adjusted to reduce the loss of energy during the transmission process. In actual production, taking the production of 250 kg of plastic products per hour as an example, a traditional extruder may consume about 70 kWh of electricity, while this single screw extruder only consumes about 49 kWh, which greatly reduces the production cost and also meets the requirements of modern industry for energy conservation and environmental protection.

   
   

2. High output capacity: This extruder has a significant high output characteristic. Under the condition of the same screw diameter, the output can be increased by 50% compared with traditional extruders. This is mainly due to its optimized screw design and efficient heating and cooling system. The structural parameters of the screw are accurately calculated and optimized, which greatly improves the efficiency of plastic conveying and melting in the screw. In the test, using the same plastic raw materials and process conditions, when the traditional extruder outputs 200 kg of plastic products per hour, this extruder can reach an output of 300 kg per hour, which effectively improves production efficiency.

   
   

3. Excellent plasticizing performance: The single screw plastic extruder can ensure high-quality melting and mixing of plastic materials. Its screw adopts special design, such as variable pitch and variable depth screw groove, so that the plastic is more fully sheared and mixed in the screw. When processing high-density polyethylene (HDPE), by testing the melt flow rate and uniformity of the plastic after extrusion, it was found that the fluctuation range of its melt flow rate was 30% smaller than that of the traditional extruder, indicating that the plasticization of the plastic is more uniform and of higher quality, which can meet the production requirements of high quality plastic products.

   
   

4. Enhanced mixing effect: The extruder provides better material distribution and homogenization effect. Its screw is equipped with special mixing elements, which can stir and mix the plastic in multiple dimensions. When processing plastics containing multiple additives, through the analysis of the composition of the plastic products after extrusion, it was found that the distribution uniformity of the additives in the plastic was 40% higher than that of the traditional extruder, ensuring the performance consistency of the plastic products and improving the qualified rate of the products.

   
   

5. Precise process control: The extruder allows precise and accurate control of the processing parameters. Its control system uses advanced sensors and intelligent algorithms to monitor and adjust key parameters such as temperature, pressure, and speed in real time. The temperature control accuracy can reach ±1°C, and the pressure control accuracy is within ±0.5 bar. During the production process, this precise control can ensure the stable quality of plastic products, reduce the defective rate caused by parameter fluctuations, and improve production efficiency.

   
   

6. Wide applicability: The single-screw plastic extruder has a wide range of applications and is suitable for the processing of a variety of plastic materials, including high-performance plastics, general-purpose plastics, elastomers, and special polymers. The design of its screw and barrel can adapt to the physical properties and processing requirements of different plastics. For example, when processing high-performance plastics such as polyphenylene sulfide (PPS), it can provide sufficient temperature and pressure to ensure that the plastic is fully plasticized; when processing thermoplastic elastomers (TPU), it can avoid excessive shearing and temperature rise to ensure that the performance of the material is not damaged.

   
   

7. Excellent screw material: The screw is made of 38CrMoAlA material and is quenched and nitrided, with a hardness exceeding HV900. This high-hardness screw has excellent wear resistance and corrosion resistance, and can maintain stable performance during long-term high-load operation. In actual production, after 1,000 hours of continuous processing tests, the wear of the screw is extremely small, only about 0.05 mm, which greatly extends the service life of the screw and reduces the maintenance cost of the equipment.

   
   

8. Efficient heating and cooling: The heating system uses a ceramic heating ring with a protective cover. The total heating power of the five heating zones is 50 kilowatts, which can quickly and evenly heat the barrel so that the plastic reaches a suitable processing temperature in a short time. The cooling system uses air cooling with a cooling power of 180W×8 = 1.44 kilowatts, which can accurately control the barrel temperature and prevent the plastic from overheating and decomposing. In the temperature control test, the time from room temperature to the set temperature (such as 200°C) is shortened by 20% compared with the traditional heating method, and the temperature uniformity is improved by 15%, which improves production efficiency and product quality.

   
   

9. High-quality gearbox: Equipped with high-quality domestic gearboxes, it has the characteristics of super torque, low noise and stable processing. The gearbox is also equipped with an external oil circulation cooling system, which can effectively reduce the temperature of the gearbox and ensure its normal operation. In the long-term continuous operation test, the noise level of the gearbox was always kept below 65 decibels, and the gears were in good wear condition, ensuring the stability and reliability of the equipment and reducing downtime caused by gearbox failure.

   
   

10. Excellent motor performance: It uses a 55-kilowatt AC motor, connected by a belt, and equipped with a variable frequency speed regulator (VT inverter). The motor can provide stable and strong power output, and the variable frequency speed regulator can accurately adjust the motor speed according to production needs, thereby achieving different extrusion speeds. In the test, the efficiency of the motor can reach more than 90% when running at full load, and the speed adjustment range is wide, which can meet the requirements of different plastic processing processes.

Where can us use the Single Screw Plastic Extruder:

1. Plastic recycling industry: In the field of plastic recycling, Single Screw Plastic Extruder plays a key role. It can melt, filter and re-granulate discarded plastic products such as plastic bottles, plastic films, plastic pipes, etc. Taking the recycling of polyethylene terephthalate (PET) plastic bottles as an example, through the processing of this extruder, the discarded PET bottle flakes can be melted, filtered out impurities and extruded into particles. These recycled particles can be used to produce new plastic products such as fibers, films, etc. According to statistics, every ton of discarded PET plastic bottles recycled can reduce about 3 tons of carbon dioxide emissions, while saving a lot of petroleum resources, with good environmental and economic benefits.

   
   

2. Plastic pipe production: This extruder can be used to produce various plastic pipes, such as PVC pipes, PE pipes, etc. In the production process, by precisely controlling the parameters of the extruder, the molten plastic can be evenly extruded to produce standard pipes. Taking the production of PE water supply pipes with a diameter of 50 mm as an example, the extruder can stably produce at an extrusion speed of 300-400 meters per hour, and the wall thickness uniformity of the pipe can be controlled within ±0.2 mm, ensuring the quality and performance of the pipe, and meeting the demand for pipes in the fields of construction, municipal engineering, etc.

   
   

3. Plastic sheet and sheet production: Single screw plastic extruders can also be used to produce plastic sheets and sheets, such as PP sheets, ABS sheets, etc. In production, through the appropriate mold and process parameter adjustment, the plastic melt can be evenly extruded into sheets or sheets of the required thickness and width. Taking the production of PP sheets with a thickness of 3 mm as an example, the extruder can produce at a production speed of 200-300 square meters per hour, and the flatness and surface finish of the sheet are good, which can be used in advertising production, industrial parts processing and other fields.

   
   

4. Plastic profile production: In the production of plastic profiles, the extruder also has important applications. It can produce plastic profiles of various shapes, such as door and window profiles, decorative profiles, etc. By designing a specific mold, the plastic melt is extruded into a profile with a specific cross-sectional shape. Taking the production of PVC door and window profiles as an example, the extruder can ensure the dimensional accuracy and appearance quality of the profile. The produced profiles meet national standards, have good mechanical properties and weather resistance, and are widely used in the building door and window industry.

   
   

5. Plastic granulation industry: In addition to plastic recycling granulation, single-screw plastic extruders can also be used for plastic modification granulation. After different plastic raw materials and additives are mixed in a certain proportion, they are melted, mixed and extruded granulated by an extruder to prepare plastic particles with specific properties. For example, by adding additives such as toughening agents and flame retardants, general plastics can be modified into engineering plastic particles with high toughness and flame retardant properties. These modified particles can be used to manufacture high-end plastic products, which increases the added value and application range of plastics.

Single Screw Plastic Extruder Maintenance:

1. Daily cleaning: After the end of production every day, the extruder should be thoroughly cleaned. Use compressed air to clean the residual plastic and dust on the surface of the barrel, screw and mold. For the inside of the barrel, special cleaning materials can be used for cleaning to remove the plastic residue attached to the inner wall of the screw and barrel. Clean the heat sink and fan of the heating and cooling system regularly to ensure good heat dissipation. Keeping the equipment clean can prevent the accumulation of plastic residues from affecting the performance and life of the equipment, while reducing the occurrence of failures.

   
   

2. Screw and barrel maintenance: Regularly check the wear of the screw and barrel, and check once every 500 hours of operation. If the screw is found to be slightly worn, it can be repaired with a special repair tool; if the wear is serious, the screw should be replaced in time. For the barrel, check whether its inner wall has scratches, corrosion, etc., and repair or replace it if necessary. When replacing the screw or barrel, ensure the installation accuracy to avoid abnormal operation of the equipment due to improper installation. At the same time, pay attention to keeping the screw and barrel clean to prevent impurities from entering and affecting the processing quality of the plastic.

   
   

3. Heating and cooling system maintenance: Check the working status of the heating and cooling system regularly, and conduct a comprehensive inspection every quarter. Check whether the ceramic heating ring is working properly and whether there is any damage or overheating; check whether the fan of the air cooling system is operating normally and whether the air duct is unobstructed. Clean the dust and dirt on the surface of the heating ring regularly to ensure heating efficiency. For the cooling water pipeline, check for water leakage and replace the cooling water regularly to prevent scale accumulation from affecting the cooling effect. Maintaining the normal operation of the heating and cooling system can ensure the temperature control accuracy of the plastic processing process and improve product quality.

   
   

4. Gearbox maintenance: Check the oil level and oil quality of the gearbox every two months. If the oil level is insufficient, the gear oil should be replenished in time, and the oil should be replaced in time if it deteriorates. Replace the gear oil regularly, generally every 1000-1500 hours of operation. Check the sealing of the gearbox to prevent oil leakage. At the same time, pay attention to the running noise and temperature of the gearbox. If any abnormality is found, stop the machine for inspection and troubleshooting. Good gearbox maintenance can extend the service life of the gear and ensure the transmission performance of the equipment.

   
   

5. Motor maintenance: Check the operation of the motor regularly, and check the temperature, current and voltage of the motor once a month. The temperature of the motor should not exceed its rated temperature, and the current and voltage should be within the normal range. Check whether the motor belt is loose or worn, and adjust or replace it in time if necessary. Clean the dust and debris on the surface of the motor regularly to keep the heat dissipation of the motor good. The normal operation of the motor is the key to the stable operation of the equipment, so it is important to pay attention to the maintenance of the motor.

   
   

6. Control system maintenance: Check the electrical components of the control system regularly, and check them every six months. Check whether the buttons, switches, sensors, etc. are sensitive and reliable, and whether there is any damage or poor contact. Calibrate the parameters of the control system regularly to ensure its accuracy. Avoid moisture, dust and electromagnetic interference in the control system, and keep the control cabinet clean and dry. Good control system maintenance can ensure the safe operation and precise control of the equipment, improve production efficiency and product quality.

Single Screw Plastic Extruder FAQ:

How energy-efficient is a Single Screw Plastic Extruder?

Single Screw Plastic Extruders are generally energy-efficient, especially when processing clean, homogenous plastic waste. Advanced heating and control systems can further reduce energy consumption, making them cost-effective for large-scale recycling operations.

Can a Single Screw Plastic Extruder handle mixed plastic waste?
While it can process some mixed plastics, a Single Screw Plastic Extruder is best suited for clean or lightly contaminated waste. For more complex or heavily contaminated materials, twin screw granulators or additional filtering systems may be required.

What are the applications of granules produced by a Single Screw Plastic Extruder?
The recycled granules are used in manufacturing processes such as injection molding, blow molding, and extrusion. They are ideal for producing new plastic products, including packaging materials, automotive parts, consumer goods, and more.

How does a Single Screw Plastic Extruder contribute to plastic recycling?
The Single Screw Plastic Extruder  into reusable granules, reducing the need for virgin plastics. This process helps minimize plastic waste, reduces environmental impact, and supports a circular economy by recycling materials back into production.

Why Choose the SHQ Single Screw Plastic Extruder?

With over 20 years of industry experience, the SHQ Single Screw Plastic Extruder has received outstanding feedback from hundreds of customer cases. This extensive history enables us to understand precisely what customers need from their equipment.

We are committed to providing the best in both pre-sales and after-sales services, along with practical and efficient plastic processing solutions to support our customers at every stage.