For further processing, the thermal drying system reduces moisture, especially of very thin plastic films. Mixing hot air and wet plastic in the centrifuge results in extensive drying. By using a heat exchanger, the combustion gases do not come into contact with the plastic. These “indirect hot air generators” offer a high level of fire safety.
The cleaned plastic must be dried before further processing into new products. Even small amounts of moisture can overwhelm degassing systems during extrusion. With thick-walled plastics, drying is an easy task – however films with their extremely large surfaces are challenging. An intensive mix of hot air and wet plastic in our mixing centrifuge enables thorough drying.
Our thermal dryers are characterized by an intensive mixing of hot air and wet plastic. The machine surfaces have thermal insulation to minimize radiation losses. Continuous control of the temperature reduces energy consumption. Heat loss is minimized by thermal insulation of the hot surfaces of the dryer. Because the inside of the heat exchanger is made of heat-resistant stainless steel, corrosion is avoided.