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The coating machine film formation mechanism and influencing factors
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Ruian Oriental pharmaceutical machinery Co., LTD is a small and mid-sized enterprise and zhejiang provincial high-tech features industry base member enterprise, of China pharmaceutical equipment association member unit; For everybody today JianShui coating machine under the film formation mechanism and influencing factors

Coating machine is a polymer wrapped in tablet form the core of the film of the equipment. Which is the way of coating solution spray to spray to the core of surface rolling, access to hot air rolling piece on the core solvent volatilization, make its surface form a layer of continuous high polymer film. The formation of droplets, aerosol droplets of the core to mobile, aerosol droplets in the core of the surface of impact, spreading, coalescence effect and the dry film coating is the important factor of influence, these need designers and operator understand, control to achieve high quality coating.

The characteristics of the coating: (1) to overcome the tablet is not easy to swallow taste faults. (2) improve the tablet stability, prevent light or air etc for oxidized denaturation; (3) adjustment of the drug release; (4) to the drug compatibility isolation; (5) good appearance.

Film formation mechanism and influencing factors

After the core of the coating film structure is not even, appearance also have a difference. This is due to uneven sexual desire to join the not soluble constituents (such as pigment) of the cause, and at the same time in the coating process, the film is not continuously formation. Most coating process is by spray adhesive polymer solution will be in solid piece of core after dry, to accept the next spray, the need to repeat the process until DuoCi coating finish. In order to get good coating effect must first understand the formation mechanism of the film.