PATENTED TECHNOLOGY RADIO FREQUENCY DRYERS FOR FABRICS Reduce process time, achieve uniform drying and improve quality STALAM’s outstanding efforts in researching innovative drying technologies led to the development, in cooperation with a leading Italian manufacturer of finishing machines, of a revolutionary Radio Frequency dryer for fabrics. The “RF/T” series dryer can be considered the only industrial radio frequency drying equipment specifically designed for the tensionless drying - partial or complete - of woven or knitted fabrics. For this application STALAM purposely developed the Double Polarity Electrode, that has the ability to deliver high power values to thin (low thickness) products by creating a highly-concentrated electric field even when fed with low RF voltages. Thanks to this electrode, a great productivity can be obtained within a small space. The whole drying process only takes a few seconds at a low temperature (40-60°C). The residual moisture in the fabric is perfectly uniform and controlled by an in-line computerised system. Double Polarity Electrode Patented Technology ( Patent n. 01266633 ) The “RF/T” series dryer can be used not only as a standalone drying unit, but also in combination with existing (old or new) equipment like conventional tensionless dryers, relaxation dryers, stenters, thermosetting equipment, and many other finishing machines, especially in the woollen industry (e.g. decating, pressing and steaming machines): the “RF/T” will increase the efficiency and throughput of existing equipment, in addition to improving the quality of the finished product in terms of dimensional stability, formability and she

How it works The fabric is fed by a spreading and centring equipment to the drying chamber, where it passes through the patented Radio Frequency electrodes. The fabric conveying system is equipped with motorised rollers that prevent any tension on the fabric. The air circulating in the drying chamber comes from the RF generator cooling system (for heat recovery) and its temperature is suitably controlled. The water vapour released by the fabric is evacuated by an extraction fan. A sophisticated moisture detection and control system at the exit adjusts automatically both the conveying speed and...