Basic Working Principle:

The tablets make complicated and constant track movement with easy and smooth turning and frequent exchanging in a clean and closed drum of the film coating machine. The coating mediums stirred in the constant temperature controlled stirring drum are sprayed on tablets through the spray gun at the inlet under the action of crawler pump. Meanwhile, hot air up to 100,000 level filtration are inhaled through the air distributing pipe at the center of the drum and flowed through tablets around the fan blade. Under the action of air exhaust and negative pressure, hot air are exhausted from the another side of the air distributing pipe and discharged after dust abatement. So these coating mediums on the surface of tablets get dry quickly, forming a coat of firm, fine and smooth film. Automatically controlled by PLC, it is in normal operation.