Hygroscopic resins are very often used in injection moulding, blowing and extrusion. If not properly treated during process such materials trapping water moisture within the granules can negatively affect the final result and quality of the product, with the risk of consistent defected parts. In order to avoid defects during plastic processing, Plastic Systems has developed a wide range of precise, reliable and efficient dehumidifying dryers with “HoneyComb” series DH with a range of air flow from 50 to 250 m3/h follow by the twin desiccant dryer series D up to 5000 m3/h which cover the most of request of our customers. The main technical features of the DR standard desiccant units are: machine automatic running with daily-weekly timer; microprocessor control panel with LCD or PLC display and keypad (according to the model); main components in contact with process air made in stainless steel; high-head low-noise side-channel blowers; filters for air with high filtering capacity; safety protections to save components from over-heating; end-user interface with keypad, LCD or “Touch Screen” display; possibility to couple the desiccant dryer with a wide range of maintenance hoppers, from 15 up to 15000 litres; stainless steel hoppers with thickness of insulation from 60 to 100 mm. .