A tablet coating machine helps protect tablets and makes them easier to swallow and store. Using it the right way is very important, which is why the SOP of the tablet coating machine is followed. It keeps the process organized and consistent. In this article, we discuss the SOP and why it matters in tablet production.

Purpose of the SOP
The SOP of the tablet coating machine is vital in the pharmaceutical industry. It helps workers use the machine correctly and maintains tablet quality. A clear SOP makes sure every batch of tablets is made the same way and is safe for patients.
The purpose of an SOP for pharmaceutical machinery includes:
- Safety: It tells workers how to use the machine without getting hurt.
- Consistency: It helps make every batch of tablets in the same way.
- Time-saving: Following the SOP helps work faster and with fewer mistakes.
- Rules:These help the company follow industry rules and good manufacturing practices (GMP).
- Care:It shows how to clean and maintain the machine to keep it working well.
Following the SOP helps make tablets that are of good quality and ready for use by patients.
Equipment Description
A tablet coating machine is used to cover tablets with a thin layer. This helps protect the tablets and makes them easier to use. The SOP of the tablet coating machine guides operators on how to use it safely and correctly.
The machine has some important parts that help it work properly. The coating pan is a round container where tablets are placed and rotated. The spray gun evenly coats the tablets with the coating solution.
The hot air system dries the coating quickly, while the exhaust system removes extra moisture and dust from the machine. The control panel allows the operator to set the speed, temperature, and other necessary settings to ensure a smooth coating process.
SOP of the Tablet Coating Machine
The SOP of the tablet coating machine explains how to use the machine safely and correctly in every batch. The following steps are included in the SOP to guide workers through the complete coating process:
Pre-Operation Checks
Before starting, make sure the machine and the working area are clean and marked with a “Cleaned” label. Check that all machine parts, including spray guns and air pipes, are correctly fixed.
Confirm that the batch number, product name, and coating materials are correct and ready for use. Take line clearance from the production officer and quality inspector before starting. The operator should wear gloves, a mask, and protective clothing.
Machine Setup
During onsite installation and commissioning, the SOP of the tablet coating machine must be strictly followed to make sure the setup is correct and ready for routine use. Load the tablets carefully into the coating pan through the charging door. Set the pan speed, air temperature, and spray rate as written in the batch record.
Adjust the spray guns to the proper distance from the moving tablets to ensure the coating spreads evenly. Make sure the exhaust and air systems are ready, then start preheating the tablets as mentioned in the batch record.
Before coating begins, check the average weight of 100 core tablets and the hardness of 10 tablets. This helps confirm that the tablets are fit for tablet coating and that there are no broken or weak ones.
Coating Operation
Start the pan rotation slowly and begin spraying the coating solution evenly over the tablets. Keep an eye on the pan speed, air temperature, and spray pattern. Adjust them as needed to prevent tablets from sticking or becoming too wet.
The coating process continues until all the coating solution has been used. Keep checking the process so that the coating remains even and the tablets move freely.
Drying and Cooling
After coating, keep the hot air running to dry the tablets correctly. Then, check the average tablet weight of 100 coated tablets to confirm that the target weight is reached. Once the coating is dry, turn off the heating system and allow the tablets to cool to normal temperature. Cooling will help protect the coating from cracking or peeling.
Post-Operation Steps
When tablets are thoroughly cooled, unload them into clean containers. Weigh the batch again and check the total yield to record it in the batch file. Clean the pan, spray guns, filters, and air pipes correctly so no coating or dust remains. Turn off the power supply after cleaning is complete.
Finally, record all details, including date, time, batch number, and operator name, in the logbook for record-keeping.
FAQs
What is the main purpose of tablet coating?
Tablet coating protects the medicine from moisture, dust, and damage. It also makes tablets look better and easier to swallow. Some coatings can control how the medicine works in the body. Coating can also improve taste and make tablets more attractive for patients.
How can I get a uniform coating on tablets?
Uniform coating happens when the machine settings are correct. The pan speed, spray rate, and air temperature must be set carefully. Watching the tablets during coating helps to fix any problems quickly.
Why is cleaning the tablet coating machine important?
Cleaning keeps the machine safe and free from old medicine. It prevents mixing of different batches. Regular cleaning also helps the machine work better for a long time. Proper cleaning keeps the tablets safe and maintains the quality of medicine.
Conclusion
The SOP of the tablet coating machine helps workers do each step carefully, keeping the tablets clean and of good quality. Following the procedure also protects the machine and makes production safer.
If you need help with pharmaceutical machinery installation, on-site services, or want high-quality machines for your setup, contact us today.



