The use of polymers in
tablet coatings has a very good demand in pharmaceutical coatings.
Earlier sugar, gelatin and other natural products were used for
tablet coatings. But due to
tedious and highly skilled manpower requirement, need for simple but more
efficient coating for tablets is needed.
Film coating has overcome
most of the disadvantages of previous techniques and also adds to
aesthetics of the tablet. Controlled
drug release is possible due to use of polymers and with the use of water
soluble polymers. Tablet
coating has thus become easy and environment friendly.
This paper will discuss briefly the older and recent techniques of
tablet coatings and give the details of various polymers and coating raw
material for tablet coating and requirement of more efficient system in
the near future.
(Abstract
From: Popular Plastics &
Packaging – December 2002)
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