The laboratory specific twin-screw extruder has a series of unique characteristics, and the following are its main features:
Screw design:
The laboratory twin-screw extruder usually adopts a split design, and the barrel can be divided into upper and lower halves, which facilitates the loading and unloading of materials and the replacement of screws and inner liners of the barrel. This design greatly improves the flexibility and operability of the equipment.
The screw and the inner liner of the barrel can be freely combined, and the ideal threaded component structure can be flexibly combined according to different materials and process requirements, realizing various process flows such as material transportation, plasticization, refinement, shearing, exhaust, pressure building, and extrusion.
Feeding and mixing:
The laboratory twin-screw extruder is easy to add materials, such as powder and strip materials, and has high conveying efficiency.
The movement of materials in the barrel is more complex, with simultaneous compression, shearing, and displacement in both longitudinal and transverse directions, resulting in sufficient mixing, good heat transfer, high melting capacity, and strong exhaust capacity, thus achieving better mixing and plasticizing effects.
Exhaust performance:
Due to the effective mixing of the twin-screw meshing part and the self-cleaning function of the exhaust part, the laboratory twin-screw extruder has excellent exhaust performance, allowing the material to achieve complete surface renewal in the exhaust section.
Power consumption:
Laboratory twin-screw extruders typically have lower specific power consumption, and compared to single screw extruders, they have lower power consumption and significant energy-saving effects.
Control system:
The laboratory twin-screw extruder is equipped with an advanced and aesthetically pleasing control system, and the control components are mostly imported, ensuring reliable quality and high sensitivity. The operating parameters of the host, such as current, voltage, temperature, torque, etc., can be displayed intuitively and operated conveniently.
Operation and maintenance:
The structure of the laboratory twin-screw extruder is relatively simple, easy to disassemble and install, and convenient for equipment maintenance and upkeep. Meanwhile, due to its split design, it can greatly shorten maintenance time and reduce labor intensity when replacing screws, cylinder liners, or performing equipment maintenance.
Application scope:
The laboratory twin-screw extruder has a wide range of applications and can be used for research in polymer plastics, such as glass fiber reinforcement, fuel blocking granulation, color masterbatch, anti-static masterbatch, alloys, coloring, low filling blending granulation, etc. At the same time, it can also be used in various fields such as cable material granulation, XLPE pipe material granulation, thermosetting plastic mixing and extrusion, as well as hot melt adhesive, PU reaction extrusion granulation, etc.
In summary, laboratory specific twin-screw extruders play an important role in multiple fields due to their unique screw design, excellent mixing and exhaust performance, low power consumption, advanced control system, and convenient operation and maintenance.
Difference from ordinary twin-screw extruders
There are many differences between laboratory specific twin-screw extruders and ordinary twin-screw extruders. The following is a detailed explanation of the main differences between the two:
1. Design purpose and purpose
Laboratory twin-screw extruder:
Mainly used for research in polymer plastics, suitable for research and development in various universities, enterprises, and research institutes.
Its design focuses more on flexibility, precision, and adjustability to meet the needs of scientific research experiments.
Ordinary twin-screw extruder:
Mainly used for continuous mixing, extrusion molding and other processes in industrial production.
Its design focuses more on production efficiency, stability, and durability to meet the needs of large-scale production.
2. Structural characteristics
Laboratory twin-screw extruder:
The smaller diameter of the screw greatly reduces the amount of material used.
The barrel usually adopts a split design, which facilitates the loading and unloading of materials and the replacement of screws and inner lining of the barrel.
The screw and the inner liner of the barrel can be combined freely, and the ideal threaded component structure can be flexibly combined according to different materials and process requirements.
Ordinary twin-screw extruder:
The screw diameter is larger to meet the needs of large-scale production.
The barrel is usually designed as a whole and is not easy to disassemble or replace.
The combination of screws and cylinder liners is relatively fixed and difficult to adjust according to material and process requirements.
3. Control System and Operation
Laboratory twin-screw extruder:
Equipped with advanced and aesthetically pleasing control systems, the control components are mostly imported, ensuring reliable quality and high sensitivity.
The operating parameters of the host, such as current, voltage, temperature, torque, etc., can be displayed intuitively and operated conveniently.
There are usually multiple feeding methods, such as volumetric measurement, dynamic weight loss measurement, etc., to meet the needs of different products.
Ordinary twin-screw extruder:
The control system is relatively simple and may lack some advanced control and display functions.
The operation method is relatively fixed and may lack flexibility.
The feeding method is usually relatively simple and difficult to meet the needs of multiple products.
4. Application scope and flexibility
Laboratory twin-screw extruder:
It has a wide range of applications and can be used for research in polymer plastics, such as glass fiber reinforcement, fuel blocking granulation, and color masterbatch.
Due to its design flexibility and adjustability, it can conduct various experiments and research according to different material and process requirements.
Ordinary twin-screw extruder:
Mainly used for continuous mixing, extrusion molding and other processes in industrial production, with a relatively fixed application range.
Due to its fixed and stable design, it is difficult to make flexible adjustments according to material and process requirements.
5. Maintenance and upkeep
Laboratory twin-screw extruder:
The structure is relatively simple, easy to disassemble and install, and convenient for equipment maintenance and upkeep.
Due to its split design, it can greatly shorten maintenance time and reduce labor intensity when replacing screws, cylinder liners, or performing equipment repairs.
Ordinary twin-screw extruder:
The structure is relatively complex, and disassembly and installation are difficult, which may require more time and manpower for equipment maintenance and upkeep.
When replacing screws, cylinder liners, or performing equipment maintenance, it may be necessary to first remove the heating and cooling systems, and then extract the screws as a whole, which increases the complexity and time cost of maintenance.
In summary, there are significant differences between laboratory specific twin-screw extruders and ordinary twin-screw extruders in terms of design purpose, structural characteristics, control system and operation, application scope and flexibility, as well as maintenance and upkeep. These differences make laboratory twin-screw extruders more suitable for scientific research experiments and product development, while ordinary twin-screw extruders are more suitable for large-scale industrial production.
