Process principles
A very even application of the coating material is an important
feature of the coating process. Coatings must be dense and without
mechanical damage and cracks. Film coating is an effective process
for the application of protective films for manipulating the product
characteristics. Glatt offers various technical solutions for coating
different particles and tablets:
In each case, the coating fluid is sprayed onto the solid material,
which is presented to it. The introduction of the process air evaporates
the fluid and dries the film coating. Small droplets and a low viscosity
ensure a uniform distribution.
Product characteristics of the coating
Coated pellet |
- Low abrasion, smooth surface
- Good flow behaviour
- Masking of taste and smell
- Good protection against light, air and moisture
- Impervious separating layers in the case of multi-layer
composition
- Systematic release of active ingredients
- Retardation, delayed dissolving
- Low hygroscopicity
- Visual attractiveness (pharmaceutical drug safety)
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Manufacturing options
Glatt provides systems with different capacities:
Batch Fluid
Bed Systems with batch sizes
- from 2g to 1500kg/batch (Top Spray Coating)
- from 50g to 700kg/batch (Bottom Spray Coating)
- from 500g to 250kg/batch (Rotor Coating)
Continuous Fluid
Bed Systems with throughputs from 20kg to 5t/h
Spouted Bed Systems with throughputs from 200g to 3t/h
Drum Coaters
with batch sizes from 500g to 2000kg/batch.
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