The principle of compressed candy
Compressed sugar is also called powdered sugar or tablet sugar, and is often called soda sugar. It is a mixture of refined sugar powder as the main body, adding milk powder, spices and other fillers and starch syrup, dextrin, gelatin and other binders, through granulation and tableting. It does not need to be heated and boiled, and it is called cold processing.
The manufacturing mechanism of tableted sugar is mainly a process of narrowing the distance of particles or fine powders to produce sufficient cohesion and tightly bonding by pressure. The contact area between loose particles is small and the distance is large. There is only cohesion within the particles, but no adhesion between the particles. There are large gaps between the particles, and the gaps are filled with air. After pressurizing, the particles slide and squeeze tightly, the distance and gap between the particles are gradually reduced, the air is gradually discharged, a number of particles or crystals are crushed, and the fragments are compressed and filled into the gap. When a certain pressure is reached, when the particles are close to a certain degree, The intermolecular gravitational force is enough to combine the particles into a whole sheet.
Moisture plays an important role in tablet molding. Completely dried particles have large elasticity and small plasticity and are difficult to be compressed into tablets. Water can improve this situation, increase plasticity and reduce elasticity. Water has sufficient dipole moment, which may play a special role as a bridge between particles to ensure that particles The cohesive force between the particles, when the capillary of the particles is deformed when pressurized, water overflows from it, forming a very thin layer distributed between the particles, due to the dipole action, the intermolecular attraction is increased and combined into a sheet.
The main equipment for manufacturing compressed sugar is: crusher (hammer mill, high-speed flake), mixer, granulator (swing type, rotary type), dryer (oven, fluidized bed, boiling dryer) or granulation Drying integrated fluidized spray granulator, tablet press (single-punch, multi-punch rotary type.)