BB Engineering has launched a new filter that combines continuous, automated large-area filtration with built-in intermediate cleaning.
The Germany-based machinery manufacturer has unveiled the new Cobra filter to respond to increased demand for efficient and cost-effective filtration systems for recycled PET.
The Cobra is designed to balance fine filtration needs with contamination challenges faced by recyclers who need to use more recycled content but have limited access to high-quality input. The new filter addresses this issue by integrating large-area fine filtration with a seamless and automated cleaning process.
Designed specifically for PET recycling, the Cobra is also suitable for applications such as synthetic fibre spinning. It allows recyclers to process materials with high contamination levels while maintaining fine filtration quality, a feat that conventional candle filters struggle to achieve.
Automation is a key feature of the Cobra filter. The system operates with two filter inserts—one actively filtering while the other is either on standby or undergoing cleaning. It autonomously manages the switchover process, ensuring uninterrupted production and eliminating the risk of human error. Operators only need to confirm the changeover on the user interface, reducing manual intervention and boosting process reliability.
Inline cleaning with zero chemicals
Another highlight is the integration of BB Engineering’s White Filter Cleaning (WFC) technology. This method uses hot steam for chemical-free cleaning, significantly extending filter service life. The automated inline cleaning process takes around 10 hours—far quicker than conventional cleaning methods that often require several days. By eliminating the need for chemical handling, the system enhances safety while also being environmentally friendly.
Reduced operating costs
BB Engineering designed the Cobra filter with economic efficiency in mind. Compared to other fine filtration systems processing 2,000 kg/h, the Cobra reportedly delivers a 40% reduction in operating costs. This is achieved through reduced melt loss due to optimised backflushing cycles; extended service life through integrated steam cleaning; lower use of spare parts and consumables; decreased energy consumption due to the absence of heating and cooling phases; elimination of chemical costs; and minimal labour requirements thanks to automation.
Additionally, the Cobra’s cleaning performance minimises downstream processing issues, reducing interruptions and further processing efforts.
Find BB Engineering at PRSE: stand C130