IRD Heats Material From Inside
Infrared (IR) operates in the same manner as the heat from the sun so unlike conventional driers only the solid or liquid mass is heated not the surrounding air which remains cool.
IR causes molecular heat oscillation directly to the core of the material so vaporising moisture which is absorbed and removed by the cool air.
Desiccant dryers work in reverse, the surface is always hotter than the core consequently as soon as it is in ambient air the the surface cools and absorbs moisture.
Applications
Crystallising and drying of PET regrind from sheet, film or bottles
Drying of virgin PET
Pre heating and drying of free flowing powders
Pre heating and drying of wood / PP
Blends of regrind, virgin and additives
Biodegradable PVOH
Hygroscopic thermoplastics
Due to the speed of moisture removal by IR acting directly at the core of the material energy consumption is low.
Typically for PET the power required is 120 watts per kilo per hour.