Tablet coating machines provide a thin outer layer or coating to tablets. They come in various sizes depending on loading capacity and motor power. The coatings are used to mask tastes and odors, provide protection, and control drug release. Common types of coatings include sugar, film, enteric, and controlled release. Coating components include polymers, solvents, plasticizers, opacifiers, and colors. Tablet coating machines include standard pans, perforated pans, and fluidized beds. Standard pans have a rotating metal pan to apply and dry coatings. Perforated and fluidized bed systems improve coating uniformity. Coatings provide benefits but also require significant capital costs and extraction systems.

1. Tablet Coating Machine
Presented by : Md. Noman
Shekh
ID: 151-29-776
13th section B
Daffodil International
University

2. Table Coating Machine is the
mechanical device that coats the outer
surface of tablet with a thin layer of
coating material.
Table Coating
Machine
Technical Specification
 MODEL: 12" 30" 36" 42" 48" 60"
72"
 Loading Capacity - Kgs.: 20 45 80
100 150 210 275
 Motor - HP: 1 1.5 1.5 2 2 5 5
 Pan - RPM: 13 to 33 13 to 33 13
to 33 10 to 25 10 to 25 10 to 13 8
to 12
 Pan Mounting Angle 30`
 Heat Capacity: KW 1.5 3

3. Objective
 To mask the taste, odor and color of the drug.
 To provide physical and chemical protection
for the drug.
 To control the release of the drug from the
tablet.
 To protect the drug from gastric environment.
 To improve the pharmaceutical elegance by
special color and contrasting printing.

4. Types of tablet coating:
• Sugar coating
• Film coating
• Enteric coating
• Controlled release coating
• Specialized coating
• Compressed coating
• Electrostatic coating
• Dip coating
• Vacuum film coating
Coating components:
• Polymer (Film former).
• Solvent ( Vehicle ).
• Plasticizer.
• Opacifier.
• Colorant.
• Flavoring agents and
Sweeteners.
• Wetting agent.
• Anti-adherent.

5. Equipment's of tablet coating
machine
The standard coating pan
• Pellegrini pan
• Immersion sword system
• Immersion tube system
The perforated coating pan
• Accela-cota
• Hi-coater systems
• Driacoater
• Glatt coater
The fluidized bed or air suspension
coater
• High pressure airless systems
• Low pressure air atomized systems

6. The standard coating pan systems:
• It consists of a circular metal pan mounted somewhat angularly on
the stand.
• The pan is 8 to 60 inches in diameter and is rotated on its
horizontal axis by a motor.
• Heat air is directed into the pan and onto the tablet bed surface
and is exhausted by means of the ducts positioned through the
front of the pan.
• Coating solution is applied on to the tablets by spraying the
material on to the rotating tablet bed by using atomized systems

7. The perforated pan systems:
In this all the equipment types consists of perforated or partially
perforated drum that is rotated on its horizontal axis in an
enclosed housing.
Fluidized bed or air suspension systems:
In this coating solution is continuously applied from the spray
nozzles.
High pressure airless systems and low pressure air atomized
systems are results in finely divided spray.
These systems are used effectively.
Airless systems were most primarily used in air suspension
coaters.
3 types
1. Top spray coating
2. Bottom spray coating
3. Tangentioal coating

8. Advantages of tablet coating
machines
1. Ideal for medium scale production
2. Uniform coating thickness
3. Easy to operate machinery
4. Both side can be coated at same time .
5. Coating can penetrate under
components .
Disadvantages :
1. Initial capital outlay.
2. Masking essential for connecting
3. Especial extraction may be required