Radio frequency dryer RF series

continuousfor the textile industryevaporator

Overview With more than 1,800 units in operation worldwide, the RF series dryers are among Stalam’s best-selling industrial drying solutions. They are multi-purpose machines designed primarily for drying yarn in packages and cakes and for worsted fibres (tops) presented on bobbins and bumps.

Performance and applications These dryers handle almost all combinations of natural, artificial and synthetic fibres, pure or blended, across counts and forms. They dry material to precise residual moisture levels, ensuring consistent process control and product quality for textile production lines.

RFA series (Radio Frequency Assisted) The RFA models combine radio-frequency treatment with conventional warm-air circulation to support and stabilise the RF drying process, improving uniformity and throughput in demanding production cycles.

Innovations and improvements

• Extensive use of stainless steel inside the drying tunnel to limit contamination and ease cleaning
• New conveyor belt tracking and tensioning system for stable transport
• Modular-type polypropylene conveyor belt for low maintenance and quick replacement
• Multi-position upper electrode system for adaptable RF field distribution
• New electronic control board to manage RF generator parameters precisely
• PLC with dedicated software for fully automated management of drying cycles and recipe recall

Efficiency and savings Stalam RF and RFA dryers achieve operational cost savings of approximately 10–15% compared with many standard RF dryers on the market, thanks to integrated process control and mechanical improvements.

Technical specifications / features

• Field-proven: over 1,800 units in operation
• Applications: yarn packages, cakes, and worsted fibres (tops) on bobbins and bumps
• Compatible fibres: natural, artificial and synthetic, pure or blended
• Drying control: ability to reach precise residual moisture levels
• RFA option: RF combined with warm-air circulation for enhanced support
• Construction: stainless steel internal drying tunnel
• Conveyor: modular polypropylene belt with improved tracking and tensioning
• Electrodes: multi-position upper electrode system
• Controls: electronic board for RF generator parameter control and PLC with software for full automation
• Estimated operating cost savings vs standard RF dryers: ~10–15%