Coating method of sugar-coated tablets

Abstract

The embodiment of the invention provides a coating method of sugar-coated tablets. The coating method comprises the following steps: step 1, coating an isolation layer; step 2, coating a powder coat layer: controlling the temperature to be 40-50 DEG C, adding mixed slurry according to the amount of 20-40 ml / kg of plain tablets, and enabling the mixed slurry to be uniformly attached to the surface of each tablet; adding a small amount of talcum powder to enable the talcum powder to be uniformly attached to the surface of each tablet, blowing hot air for 2-5 minutes after all the tablets are scattered, coating the next powder coat layer after full drying, and repeating the operation for 5-15 times until edges and corners of all the tablets disappear; step 3, coating a sugar coating layer; step 4, coating a colored layer; and step 5, polishing: scattering 2 / 3 of a part of Chinese insect wax powder into the tablets, slowly scattering the rest 1 / 3 of Chinese insect wax powder after the surfaces of the Chinese insect wax powder are bright, and rotating a coating pan until the surfaces of all the tablets are bright. The method is high in efficiency and low in pollution in the manufacturing process, and the manufactured tablets are not prone to color fading and moisture absorption.

Description

technical field [0001] The invention belongs to the field of pharmacy, in particular to a method for coating sugar-coated tablets. Background technique [0002] Sugar coating is a layer of sugar wrapped on medicine or food. Its functions are as follows: 1. Sugar coating can protect against light, moisture and air to a certain extent; 2. Cover up the bad smell of medicine; 3. Improve the appearance and make it easier to swallow. [0003] Coating steps of traditional sugar-coated tablets: isolation layer (3-5 layers) for 30 minutes, powder-coated layer (15-18 layers) for 20-30 minutes, sugar-coated layer (10-15 layers) for 15-20 minutes, colored sugar-coated layer (8-15 layers) ) 15 ~ 20min, lighting. In the traditional coating method, the operation of coating the powder coating layer is: sprinkle the slurry once, sprinkle the powder once, rely on the syrup attached to the tablet to adhere to the talcum powder, and repeat the operation 15 to 18 times after drying until the ed...

AI Technical Summary

Problems solved by technology

[0005] In this regard, those skilled in the art have also carried out a lot of research, such as using aluminum color lake instead, but aluminum color lake contains aluminum, although the amount is not large, it is generally recognized as safe, but for long-term users, it will still cause certain problems. Influence

Some take the method of directly adding the mucilage to the coating solution. Although this method has some merits, the sugar-coated tablet needs to be wrapped in dozens of layers. Adding the mucilage to the coating solution will increase the difficulty of coating, and it will It directly affects the disintegration time limit of the tablet, and if the disintegration is unqualified, it directly affects the curative effect of the product, and the product is also unqualified

[0006] Therefore, the coating method in the prior art also has the problems of low production process efficiency, high pollution, and easy fading and moisture absorption of the produced tablets.

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