A tablet coating machine is a device that is often used in the pharmaceutical industry. These machines are actually used for coating tablets with a very thin coating so that the smell, taste, and color of the drug can be effectively masked. Tablet coating is also used for preventing the drug from undergoing any kind of chemical or physical changes. A powerful coating can also prevent a drug from undergoing chemical transformation and disintegration when it gets in contact with gastric fluids. When the right kind of coating is put over the tablets, it can protect the drug and its inherent materials from getting destroyed. The coating process also helps to make sure that the overall quality of the tablet is significantly improved.
The tablet coating machines simply apply coating ingredients over the tablets as a solution. The tablets are arranged in a bed vertically or horizontally and the machine puts the coating solution over them. A gush of hot air is used for evaporating the solvent. The bed is moved in such a way that the coating is properly distributed over the tablets. The tablets must be put over a closed drum that is rotated continuously in orbital motion so that the coating process is managed without any hassles. The movement of the bed also makes it possible to avoid too much coating of the tablets. The machine is also equipped with angled baffles that help in the coating process. These baffles help to make sure that all the parts of the tablets are equally and properly exposed to the coating solution.
The hot air that is applied to the tablets comes out from a perforated tablet bed. Unless this hot air is used, it can be difficult to get the coating evaporated easily and quickly. There is also a mechanism to regulate the direction, volume, and temperature of the hot air. The drum pressure must be evenly maintained in contrast to the outer or external environment in the room so that a perfectly isolated atmosphere is maintained for the process. This helps to maintain proper extraction rates for the tablets at all times. Through this working process, it is possible to make sure that the surface of the tablet is maintained smoothly. Tools like include spraying guns, coating pans, and exhaust pipes can be used alongside the operation of the tablet coating machines. Sometimes the tablet coating method may also include sugar coating and/or film coating.
Over the years, the types of tablet coating machines that have been manufactured and developed have only expanded in numbers. Nowadays you can find different types of models such as standard coating pans, perforated pans, and fluidized bed coating systems. No matter the type of tablet coating machine you get for your operations, it is very important that you think about the requirements of your project as these machines do come at a hefty price. Using these tablet coating machines can significantly improve the tablet making process in your company’s pharmaceutical workshop.