The vacuum freeze-drying method is a process of liquid→solid→gas. During the freeze-drying process, the "liquid bridges" between the solution particles have been frozen into "solid bridges". The relative position of the particles has been fixed, and there is no surface tension on the gas-liquid interface between the two particles.
With the continuous distillation of the solvent, the "solid bridge" continues to decrease, but the relative position between the two particles will not change until the "solid bridge" completely disappears.
SED-30DG Vacuum Freeze Drying Machine
Machine suitable for
food and vegetable drying
Cooling water Quantity
6000mm×2300mm×2600mm Final dimension based on design