Spray Coating

Spray Coating covers SINOTHERMO's Wurster fluidized bed granulation coater, which suspends particles in air while spraying a coating solution onto them. This builds a uniform layer across each particle for taste-masking, controlled-release or protective coating applications in pharmaceutical and specialty powder production.

FLP-Wurster Fluidized Bed Granulation Coater

Categories: Granulator and Extruder, Fluid Bed Granulator

All-in-One Mixing, Granulating, Coating, and Drying:

After the main material forms a fluidized bed at the bottom, granules are created with the aid of adhesive sprayed from the top nozzles in the granulating chamber. Subsequently, coating material is sprayed onto the granules from bottom or side nozzles within the chamber for effective coating.

Input:: Main ingredient as powder (for granulation) or granules and pellets (for coating), with adhesive or coating material in liquid form
Output:: Solid medium-sized granules with 3%–5% moisture content
Type:: Spray Fluidized Bed, Wet Granulation
Additional Features:: Mixing, Coating, Drying, Cooling

Applying Uniform Coatings in a Fluidized Bed

The FLP Wurster fluidized bed granulation coater suspends particles in air while spraying a coating solution onto them, building a uniform layer across each particle — used for taste-masking, controlled-release or protective coatings.

Wurster Coating Applications

Taste-masking bitter active ingredients in pharmaceutical tablets and granules. Controlled-release coatings that regulate how quickly an active ingredient is available after ingestion. Protective coatings shielding moisture- or oxygen-sensitive particles from degradation.

Explore More

Fluid Bed Granulation →

The broader fluidized-bed technology family spray coating belongs to.

Wet Granulation →

A related liquid-binder technology often paired with coating in the same process line.

Cooling →

A common downstream step after coated particles leave the fluidized bed.