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The coating process is to coat the outer surface of the sub-drug solid preparation with certain film-forming materials in a specific equipment according to a specific process, so that after drying, it becomes one or several layers of different thicknesses that adhere closely to the surface. The elastic multifunctional protective layer can achieve many purposes such as improving the stability of the drug, covering up the bad odor of the drug, reducing the irritation of the drug, delaying the drug release, preventing the drug incompatibility, improving the appearance, and being convenient to take.
The equipment used for coating is called coating machine. There are many types, mainly including traditional water chestnut coating pan, high-efficiency film coating machine, fluidized bed coating drum, etc. The working principle of various coating machines is basically the same. The liquid is sprayed on the rotating material in an atomized manner and passed through a heating system to make the coating liquid dry quickly after contacting the surface of the material and adhere to its surface to form a film coating.
client needs
Due to the diversification of raw and auxiliary materials, it is difficult to set a unified standard for liquid flow. Generally, it needs to be determined through experience and experiments; this requires that the flow rate of the dosing pump can be accurately and widely adjusted.
Due to hygienic requirements, in addition to changing the liquid, the dosing pump needs to be cleaned and disinfected regularly in the daily production process. Since the coating agent is generally mixed with a variety of materials and usually contains a certain amount of particulate matter, in order to achieve a good coating effect, the coating liquid delivery pump used in the coating machine generally has the following requirements:
1. The pump that delivers the coating liquid should be easy to clean, sterilize and sterilize to meet the hygienic level of the coating process in the pharmaceutical industry
2. The pump conveying the coating liquid should avoid dead ends to prevent the accumulation or blockage of the suspension coating liquid
3. The pump for conveying the coating liquid should have stable operation performance and stable flow to ensure the uniform size of the atomized droplets
4. The pump that delivers the coating solution must not destroy the composition, state and integrity of the coating solution
5. The pump for conveying the coating liquid should be able to continuously adjust the flow rate of the coating liquid, and be able to adjust the size of the atomized droplets according to the process requirements, and cooperate with the drying temperature and the amount of hot air to achieve dynamic balance to achieve the best coating effect.
6. The coating liquid delivery pump has good corrosion resistance and can be used to transfer corrosive coating liquid.
Rongbai solution
Rongbai has a complete peristaltic pump product line, which can provide various flow and material options according to the process needs. It is an ideal choice for the coating liquid delivery pump on the coating machine equipment. Medicines are directly related to people's health and life safety. In order to ensure the quality of medicines, the entire production process of the pharmaceutical industry requires precise fluid transfer and a pollution-free production environment.
Rongbai peristaltic pump conveys liquid material by squeezing the hose. The liquid material only contacts the inner wall of the pipeline, which can prevent the pump body from polluting the liquid material.
No dead space in the pipeline Cleaning Disinfection and sterilization is extremely simple.
Contamination-free transfer of materials is achieved by using hoses that meet hygienic requirements.
Pollution-free switching between different materials can be achieved by changing the hose;
Rongbai peristaltic pump has good self-sealing performance, no valves and seals are needed on the pipeline, and there is no dead angle;
The low-pulsation structure design of Rongbai peristaltic pump can realize stable flow transmission of liquid materials;
Rongbai peristaltic pump has a wide flow range and can be continuously adjusted to provide different flow rates with changes in process requirements;
Rongbai peristaltic pump has low shear force and can transfer liquid material and macromolecular material containing solid particles without changing the state of the material;
Rongbai peristaltic pumps can drive a variety of hoses with excellent chemical compatibility, and can transmit strong corrosive solvents by selecting suitable hoses;
Rongbai's years of experience in the design and manufacture of peristaltic pumps can provide customized solutions according to customer needs.