This multi-layered package can be stored at room temperature for several years without food deterioration or spoilage. The products is frozen. This provides a necessary condition for low temperature drying. After freezing, the product is placed under vacuum. This enables the frozen solvent in the product to vaporize without passing through the liquid phase a process known as sublimation.
Heat is applied to the frozen product to accelerate sublimation.
Low-temperature condenser plates remove the vaporized solvent from the vacuum chamber by converting it back to a solid. This completes the separation process. All rights reserved.