Ferlin EasyDry FED series dehumidifiers remove the moisture in plastic granulate with low dew point technology using an alveolar (honeycomb) rotor. The machine consists of the dehumidifying rotor, the process and regeneration fans, the process and regeneration heaters and the command and control panel. Three operations are carried out simultaneously inside the rotor: PROCESS, in which the air that has been dehumidified and brought to the required temperature is sent to the hopper; REGENERATION, in which the saturated pores release their moisture into heated ambient air; and COOLING, which prepares the rotor for the process step. Thanks to the cyclic movement of the rotor, the dew point value stays stable within a narrow band over time.
Why is dry air drying necessary? Hot air dryers remove only the moisture on the surface of the raw material; they are inadequate for hygroscopic (moisture absorbing) plastics. Dry air (desiccant) dryers such as the EasyDry lower the dew point of the air to levels reaching –40 °C and so remove the internal moisture of the granulate as well. When hygroscopic raw materials such as nylon (PA6/PA66), polycarbonate (PC), ABS, PET, PBT, PMMA (acrylic), TPU, PLA and ASA are not dried with dry air, defects such as bubbles, silver streaks, brittleness and dimensional deviation occur. With non-hygroscopic materials such as PP, PE (HDPE/LDPE) and PS, process stability and surface quality improve as well.
The machine is managed through a graphic (touch-screen) HMI. The user can select the recipe (material) and set the processing temperature and the air flow; the machine can be optimized through the RCE (anti-stress), energy saving (0/1/2) and weekly calendar functions. The ATR142 safety thermoregulator raises an alarm 25°C above the process set value and stops the heating. Remote maintenance and monitoring are possible with FerlinBridge/NEBULA; the MOVAC Easy-4/5 hopper loader can be integrated directly.
For ease of maintenance, the dehumidifier and the hopper have an easily removable black cartridge filter (hopper) and a paper filter (regeneration). Cleaning the filters daily and cleaning the inner surface of the hopper at a material change are essential for performance. Manufacturer: NEW OMAP s.r.l. (Italy), under the Ferlin Plastics Automation (Netherlands) brand.
12 models
