Rotary tablet press

1. Presented by:- Pritam Kayal(64)
Jinia Rina Ghosh(65)
Palash Ghosal(66)
Souvik Dutta(67)
Kaenat Faiz(68)
GURU NANAK INSTUTED OF
PHARMACEUTICAL SECINECEAND
TECHENOLOGY
MULTI-STATION OR ROTARY TABLET PRESS

2.  Introduction
 Application
 Types
 Parts & Mechanism
 Advantage and Disadvantage
 Conclusion
 References
 Question & Answer
CONTENT

3. • Rotary tablet press is a mechanical
device that unlike the single punch
tablet press.
• Tooling station helps in compress
granules/powder mixture into tablets.
• Upper and lower punches leaving the
powder granules to be compressed in the
middle.
• It was developed to increase the output
Of tablets.
• Capacity of a rotary tablet press depends
on rotation speed and number of stations
on the press.
INTRODUCTION
[1,2]

4. •These equipment produce tablets for various industries; the most
extensive application of rotary tablet presses is pharmaceuticals , medical.
•Even though the pharmaceutical industry is the biggest recipient of
tablet compression machines, there are a variety of high-speed
industrial rotary presses.
•The machines are particularly for a range of uses, such as nuclear
fuels, hygiene and body care, detergents, catalysts, consumables,
powder metallurgy.
[3]
APPLICATION

5. Types of Tablet compression machines
Single punch tablet presses utilize
single-sided compression to make
tablets.
Multi station punch machine use
double-sided compression.
Single punch tablet press compression
cycles do not have a dwell time.
Multi station punch machine typically
use a punch head flat which enables a
dwell time as the punch passes under the
compression roller.
Single station punch machine Multi station punch machine
• Single station means at a time one
tablet can be punched.
• Multi station means more than
one tablet can be punched at a
time.
[1]

6. PARTS OF A SINGLE PUNCH
TABLET PRESS
[2,3]

7. PARTS OF A MULTI STATION
OR ROTARY PRESS
[3]

8. WORKING: COMPRESSION
CYCLE
Granulation
stored in
hopper
Emptied into
feed frame
Granulation is
spread over a wide
area
Pull down cam
lowers the lower
punches
Dies are overfilled
Weight control can
reduce fill in dies
Wipe of blade
removes excess
granulation
Lower punches
back in the front
of feed frame
Travel over lower
compression roll
Compact the
granulationover
the dies
Height of the
lower pressure is
changed
Upper punchesare
withdrawn
Tablets flush with
or above the
surface of the dies
Tablets slidedown
a chute into a
receptacle
[1,4]

10. STAGES OF TABLET
COMPRESSION PROCESS
FILLING
• Involves transfer of granules to the
compressing machine punch-die cavity.
• The granulation is overfilled on the die table
(turret).
METERING
• Involves removal of excess granulation from the
compressing machine.
• Enables the exact weight (volume) of granulation.
COMPRESS
ION
• Involves bringing together the upper and lower
punches under pressure within the die to form the
tablet.
• The proper balance of thickness and hardness
determines optimum roll for any product.
EJECTION
• Involves removal of tablets from lower punch die
station
• A scraper pushes the tablet off the die table away into
the collection container.
[1,4]

11.  High productivity can be gained with a minimal amount of labor while saving
money.
 Rotary press has an output of between 9000 – 234000 tab/hour. This will
depend on design and configuration of the tableting machine. So, the machine
saves time.
 Rotary press decreases waste of valuable formulation in non-specific tablets.
 Highly efficient, since it is an automatic equipment, with the easy and
humanized operation.
 Smooth surface of tablet and high-quality.
 It is more costly than a single station press.
 High maintenance cost.
 Multi-station compression machine needs a little bit of expertise considering that it
has various automated systems.
 The high possibility of pollution and contamination is another shortcoming of this
tableting machine.
[3,4]
[4]

12. MAINTANANCE
 Automated cleaning system. Using an automated cleaning system,
such as an ultrasonic wash with a rinse and dryer, can ensure proper,
consistent cleaning and drying of tooling, with limited handling and
potential for damage.
 Handling. Poor handling of tooling, before or after use in a tablet
press, is the main cause of tooling damage. Reducing handling and
human interaction with tooling can minimize the potential for
damage.
 Inspection. You can also extend tooling life by implementing a
thorough inspection procedure using equipment that effectively
identifies wear. For visual inspection, use a horizontal optical
comparator for checking punch tip wear as well as wear to the
punch’s relief .
 Refurbishing tooling. To repair damaged tooling , such as to
remove J-hooks on a punch tip, use a benchtop motor or buffing
station with a vacuum, equipped with a large, buffing wheel. You
can also use a buffing wheel to polish the punch cups to minimize
sticking.
[4]

13. CONCLUSION
As you can see, a tablet press tooling plays a fundamental role in
tableting process.
Therefore, choosing an appropriate design that meets your specific
tablet compression applications is critical.
Furthermore, the design, treatment and standardization of tablet
press tool types are fundamental in ensuring maximum and
efficient and Uniform productivity.
[4]

14. REFERANCE