Professional China Laboratory Twin Screw Extruder Manufacturer

As a leading laboratory extruder manufacturer in China, Beyou′s lab twin screw extruders are specially designed for R&D applications.

Beyou Lab Twin Screw Extruder For Sale

The laboratory Twin-Screw Extruder is specially designed for R&D applications, this experimental extruder features a compact footprint that maximizes lab space efficiency. Its modular barrel and screw element configuration enables flexible process customization for diverse applications, allowing rapid and cost-effective development trials with minimal material consumption. The system also accommodates specialized small-batch production. Currently deployed across university material science research, institutional new material development, and corporate R&D centers for formulation optimization.

Our Lab Twin Screw Extruder Features

1. Modular layout design optimally fits standard lab workstations
2. Intuitive operation enables real-time experimental data collection with precision recording
3. Building-block barrel/screw configuration allows customized assembly for specific applications
4. Designed for micro-material processing in university labs and research institutions
5. Integrated system with smart PLC touchscreen ensures easy installation and efficient operation

Application

This laboratory-specific twin-screw extruder has multifunctional processing capabilities and can meet various R&D needs in the field of polymer materials. Main applications include polymer material modification, reactive extrusion and devolatilization. It can also be used for continuous extrusion of samples, cutting-edge material development, new process development and small batch production.

Beyou Customer Cases

PVB Interlayer Film Extrusion Production Line

Lab Twin Screw Extruder Specifications

Type	D（mm）	Do/Di	L/D	RPM（Max.）	P（kw）	T/A3	Output (kg/h)
CTS-16C	15.6	1.71	24~48	600	1.5	6.1	1~10
CTS-20C	22	1.54	32~64	600	5.5	7	5~20
CTS-26C	26	1.53	32~100	600	7.5	5.6	8~35
CTS-30C	30.2	1.42	32~100	600	15	6.8	15~55
CTS-35C	35.6	1.51	32~100	900	30	5.8	20~120

Why Choose Us

Our lab-scale extruders are designed to support material research and formulation development. With precise control of temperature, torque, and pressure, they deliver highly stable and reliable experimental results.

Equipped with an intelligent PLC control platform, the extruder provides real-time monitoring of temperature, pressure, torque, screw speed, and feeding. Closed-loop control ensures precise, stable, and repeatable processing for scientific research.

Compact, safe, and easy to operate, suitable for polymer development, masterbatch formulation, composite material research, and new material innovation.

The modular screw and barrel design allows easy adjustments and reassembly, giving researchers the flexibility to explore various processing conditions such as mixing, dispersing, shearing, devolatilization, and reactive extrusion.

Ready to Enhance Your Extrusion Process?

Lab Twin Screw Extruder Friendly Guide

What Is a Lab Twin Screw Extruder?

A lab twin screw extruder is a small-scale extrusion machine with two screws rotating inside the same barrel. Its basic processing principle is similar to that of a production twin screw extruder but on a smaller scale.

Lab models typically have smaller screw diameters, lower throughput, making it easier to adjust formulations and processing parameters without consuming large quantities of raw materials.

They essentially bring the twin screw extrusion process into the laboratory, providing an experimental platform for material and process development before pilot or production scale-up.

What Is a Lab Twin Screw Extruder Used For?

Lab twin screw extruders are mainly used for:

Polymer blending and modification:Mixing different polymers or incorporating fillers, fibers, pigments, flame retardants, stabilizers, and other additives.
Formulation development:Comparing different resins, additives, and formulation ratios for engineering plastics, composites, biodegradable materials, and highly filled compounds.
Reactive extrusion:Carrying out processes such as polymer modification, grafting, chain extension, and compatibilization under controlled conditions.
Process development and scale-up:Adjusting screw speed, temperature, feed rate, and screw configuration to establish suitable processing conditions before moving to larger equipment.
Sample preparation:Producing small batches of compounds, masterbatches, or pellets for subsequent molding, extrusion, and material testing.

How Does a Lab Twin Screw Extruder Work?

A lab twin screw extruder uses two interacting screws to convey, melt, mix, shear, and homogenize materials before pushing the processed melt through a die.

The process generally involves five stages:

Feeding and conveying:Pellets, powders, or other raw materials enter through the feeding system and are transported forward by the rotating screws.
Melting and plasticizing:Barrel heating, screw shear, and material friction gradually soften and melt the polymer.
Mixing and compounding:Conveying elements, kneading blocks, and mixing elements generate the mixing and shear required to distribute and disperse polymers, fillers, fibers, and additives.
Venting and devolatilization:Atmospheric or vacuum vents can remove moisture, trapped air, and volatile substances.
Extrusion:The homogenized melt is pressurized and discharged through the die. It can then be cooled, pelletized, or collected directly for further testing.

What Are the Types of Lab Twin Screw Extruders?

Lab twin screw extruders can be classified by screw rotation and engagement.

Co-Rotating Vs Counter-Rotating

In a co-rotating lab twin screw extruder, both screws rotate in the same direction. This configuration provides effective distributive and dispersive mixing and is widely used for polymer compounding, modification, and masterbatch development.

In a counter-rotating lab twin screw extruder, the screws rotate in opposite directions, producing different conveying and shear characteristics for specific extrusion processes.

Intermeshing Vs Non-Intermeshing

In an intermeshing design, the screw flights overlap, promoting material transfer and self-cleaning.

In a non-intermeshing design, the screws do not overlap and provide different conveying and mixing behavior.

How Is a Lab Extruder Different from a Production Extruder?

Lab and production extruders differ mainly in scale, processing capacity, and purpose:

Comparison	Lab Extruder	Production Extruder
Screw size	Smaller	Larger
Throughput	Lower	Higher
Material consumption	Lower	Higher
Main purpose	R&D and process validation	Continuous production
Parameter adjustment	Flexible for experiments	Focused on production stability

Despite the difference in scale, both can use similar modular barrels, screw elements, and processing-zone designs, making lab trials useful for production scale-up. However, operating parameters still need to be adjusted when moving to larger equipment.

Is a Lab Twin Screw Extruder the Same as a Micro-Compounder?

Not exactly. Both are used for material and formulation development, but they differ mainly in sample size and processing method.

A lab twin screw extruder generally operates continuously, with material passing through feeding, melting, mixing, venting, and extrusion. It is better suited for continuous process development, sample preparation, and scale-up studies.

A micro-compounder is designed to process very small quantities of material, often from gram-scale samples to small laboratory batches.

In simple terms:

Micro-compounder is more suitable for early formulation screening when only a small amount of material is available
Lab twin screw extruder is better suited for continuous extrusion experiments and subsequent process scale-up

What Is the Typical Output of a Lab Twin Screw Extruder?

Lab twin screw extruder throughput typically ranges from 1kg/hr~120kg/hr, depending on machine size and experimental requirements.

Smaller screw diameters generally provide lower throughput, while larger laboratory machines can reach tens of kilograms per hour.

Actual output also depends on screw speed, torque, feed rate, material viscosity, filler content, and bulk density. As a result, the same extruder may have significantly different throughput when processing different formulations.

What Parameters Should Be Considered When Selecting a Lab Twin Screw Extruder?

Selection should be based on the material, experimental scale, and process requirements. Key parameters include:

Screw Diameter (D): Determines processing scale and has a major influence on throughput.
L/D Ratio: Determines the available length for conveying, melting, mixing, and devolatilization.
Screw Speed: Influences shear, mixing, residence time, and processing capacity.
Torque: Particularly important for high-viscosity, highly filled, and fiber-reinforced compounds.
Throughput and Minimum Sample Requirement: Consider both maximum capacity and the minimum stable feed rate, especially when experimental materials are expensive or limited.
Screw Configuration: Modular conveying elements, kneading blocks, and mixing elements allow the process to be adapted to different formulations.
Temperature Control: Check the maximum temperature, number of control zones, and heating and cooling capabilities.
Feeding and Venting: Depending on the formulation, options may include gravimetric feeders, side feeders, liquid feeding, and vacuum venting.

The best lab twin screw extruder is not necessarily the one with the highest output or screw speed. It should provide the processing flexibility, material efficiency, and control required for your specific experiments and future scale-up goals.