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   Lipid/Hotmelt Coating

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Fluid Bed

Drum coater

Vertical granulator


Product handling


 Technical processes





Coating or encapsulation of particles by melting.


Particle and pellet coating, micro coating, flavour encapsulation.

Effective process.
Fast coating.
No evaporation of solvents required.
Product advantages.
Protection against moisture.
Delayed release of active ingredients in the case of pharmaceutical drugs.
Taste masking.
  Uniform and dense coatings.
Low to high coating masses in comparison with the particle to be coated.
  Coating thickness.
Between ca. 2
m and several hundred µm. 

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. Lipid/Hot melt coating is a very effective process for the application of waxes and molten materials as protective films for manipulating the particle properties.

Glatt offers Fluid Bed Coating (Top Spray Coating, Bottom Spray Coating, Rotor Coating) as a technical solution for coating different particles and tablets. For particles difficult to fluidize we have developed the Glatt Spouted Bed Technology.
The coating fluid is sprayed onto solid materials, which are presented to it. The introduction of process air causes the film coating to solidify. Small droplets and a low viscosity ensure that the distribution is uniform.
The time and energy-intensive evaporation of solvents can be dispensed with by the use of molten materials as coating liquids.


Specific manipulation of the product characteristics of particles or tablets such as:

2-layer coating on micro pellets

Shelf life
Surface structure
Release of active ingredients
Behaviour when dissolving
Sensitivity to light
Visual attractiveness  

2-layer coating on micro pellets

  Manufacturing options
Glatt provides systems with different capacities:

Batch Fluid Bed Systems
with batch sizes
- from
2g to 1500kg/batch (Top Spray Coating)
- from 5
0g to 700kg/batch (Bottom Spray Coating)
- from 50
0g to 250kg/batch (Rotor Coating)
Continuous Fluid Bed Systems with throughputs from 2
0kg to 5t/h
Spouted Bed Systems with throughputs from 20
0g to 3t/h.

Process principles

Technical Processes

▶Fluid bed Coating


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