Characteristics and Principles of Coating Machines Production Status

Coating machines are devices that wrap polymers around tablet cores to form thin films. That is, the coating solution is sprayed onto the surface of the rolling tablet cores, and hot air is introduced to evaporate the solvent on the rolling tablet cores, so that a continuous polymer film is formed on the surface. The formation of droplets, the movement of droplets to the tablet cores, the impact, spreading, and agglomeration of droplets on the surface of the tablet cores, and the drying of the film are all important factors affecting the coating. These need to be understood and controlled by designers and operators to achieve high-quality coating.

Characteristics of coating machines:

1. Regulate the release of drugs;

2. Improve the stability of tablets to prevent oxidation and denaturation due to light or air;

3. Overcome the disadvantages of tablets that are not good in taste and difficult to swallow;

4. Isolate compatible drugs.
The working principle of the coating machine is that the core moves continuously in a complex trajectory under the action of the streamlined guide plate in the clean and closed rotating drum. It is controlled by a computer and automatically sprays the coating dressing according to the optimized process parameters. At the same time, the set hot air is supplied under a controllable negative pressure state. The hot air is discharged through the bottom of the core layer, so that the coating medium sprayed on the surface of the core is quickly and evenly dried, thereby quickly forming a solid, dense, flat and smooth surface film on the surface of the core.

From the sales channels of pharmaceutical machinery companies, domestic direct sales and agency exports are still the main channels currently used by companies. Among the surveyed companies, the proportion of companies using domestic direct sales and agency exports is 68.0% and 48.0% respectively. From the perspective of corporate product promotion methods, the current promotion methods of pharmaceutical machinery are mainly door-to-door sales, mailing materials, participating in professional exhibitions and advertising in professional journals.

The main way for companies to obtain information is through professional journals. The pharmaceutical machinery industry will show a slow growth trend in the next five years. Generally speaking, the sales price of products will gradually decline, and the price difference of products in different regional markets will become smaller and smaller. In terms of channel construction, since the regional agency system can effectively save the sales cost of enterprises and expand the distribution scope, enterprises will mainly develop regional agency system, that is, multiple wholesalers distribute in different regions, supplemented by direct retail. The most fundamental factor that determines product price and market share is the technical content of the product.