Description
The Bartly star screens, engineered and manufactured by Irmach, are industrial machines designed for the efficient granulometric separation of bulk materials with varying particle sizes. They are widely used in wood-processing applications such as chips, splinters, sawdust and bark, as well as in biomass plants, recycling lines, composting units and municipal solid-waste treatment. Thanks to their versatility and continuous, clog-free operation, Bartly star screens provide a robust and reliable solution for industrial environments requiring precision, high throughput and long-term stability.
Function and application of star screens
A star screen separates bulk materials according to particle size using the continuous rotary motion of multiple star-shaped shafts. This screening principle prevents blockages, ensures uniform material flow and maintains consistent performance even when handling humid, fibrous or irregular materials. It is an ideal solution for biomass processing, recycling operations and wood-processing lines where efficiency and consistency are essential.
Modular design and robust construction
Featuring a reinforced modular structure, Bartly star screens can be easily adapted or integrated into existing production lines. Their industrial-grade construction ensures resistance to wear, high mechanical strength and long operational life, even under the demanding conditions typical of the biomass and recycling sectors. The structural design facilitates maintenance and maximises equipment uptime.
Energy efficiency and sustainable operation
The rotating-star system provides efficient screening with low energy consumption, making these machines both environmentally sustainable and economically advantageous. The precise geometry of the stars and the smooth, controlled motion of the shafts reduce vibration, wear and noise levels, ensuring quiet, stable and long-lasting operation.
Available configurations
Bartly star screens are available in various sizes, star types and shaft configurations. They can be supplied in single or multiple stages, with optional electronic speed control, automatic adjustments and full integration into feeding or conveying systems. Each machine is customised according to the material characteristics and the desired processing capacity.
Main applications
- Screening of wood chips, splinters, sawdust and pine bark
- Biomass, recycling and composting facilities
- Industrial and municipal solid-waste classification
- Separation of sand, crushed glass and organic materials
Complete Irmach service
Irmach provides complete project support, including engineering, manufacturing, installation and technical assistance. Each Bartly star screen is designed to deliver durability, high efficiency and optimal screening performance, ensuring a fully tailored solution for industrial material-handling processes.
Frequently asked questions about star screens
What is a star screen used for?
A star screen separates bulk materials according to particle size using rotating star-shaped shafts, ensuring efficient, precise and clog-free screening.
Can Bartly star screens be customised?
Yes. They can be fully customised in size, star configuration, number of shafts, screening stages and rotational speed, ensuring the best performance for each material type and required processing capacity.
What are the advantages of star screens over other systems?
Their main advantage is continuous, blockage-free operation, even with humid, fibrous or irregular materials, thanks to the rotating-star mechanism that prevents accumulation and obstructions.
Do star screens require frequent maintenance?
No. Thanks to their robust construction and high-resistance components, Bartly star screens require only periodic preventive maintenance to ensure long-term reliability.
In which sectors are Bartly star screens commonly used?
- Wood-processing and biomass industries
- Recycling and composting operations
- Industrial and municipal waste-sorting facilities
- Separation of glass, sand and organic materials