Advanced Reclaim Quality Control and Contamination Management in Blown Film Lines 2026
The quality of reclaimed material directly affects the film's mechanical and optical properties. Contaminants (metal, dirt, other polymers) can cause gels, black specks, and film breakage. To manage reclaim quality, the granulator should be kept clean to prevent contamination from other materials. A metal detector should be installed in the reclaim feed to catch metallic particles. The reclaim should be filtered through a screen changer with a fine mesh (80-120) to remove gels and contaminants. The reclaim ratio should be optimized: higher ratios reduce cost but may increase defects. For high-quality films, the reclaim is often used only in the core layer of multi-layer films. In summary, reclaim quality control is essential for maintaining film quality. The operator should regularly inspect the film for gels and black specks; if defects increase, the reclaim ratio should be reduced or the filtration improved. In conclusion, advanced reclaim quality control and contamination management ensure that recycled content can be used effectively without compromising film quality.
The reclaim flake should be dried if hygroscopic (e.g., PA, EVOH) to prevent moisture-related defects. The drying can be done in a hopper dryer or by using a heated air stream in the conveying system. The reclaim should be stored in a clean, dry area to prevent contamination. In practice, the operator should maintain a log of reclaim usage and film quality to identify trends. If the film quality deteriorates, the reclaim source or processing should be investigated. In conclusion, advanced reclaim quality management is key to sustainable film production, enabling the use of recycled content while maintaining high quality.
Blown Film Machine
Quality control measures: Metal detector: in reclaim feed. Screen changer: fine mesh (80-120) for filtration. Visual inspection: for gels and black specks. Reclaim ratio: optimize based on quality. Layer placement: use reclaim in core layer. Drying: for hygroscopic resins. Contamination prevention: Clean granulator and storage. Dedicated lines for different materials. In practice, the operator should work with the reclaim supplier to ensure consistent quality. In conclusion, advanced reclaim quality control is essential for sustainable blown film production, reducing waste and material cost.
