How to troubleshoot capsule sticking problems in a Capsule Making Machine?

Dec 17, 2025

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Hey there! As a supplier of Capsule Making Machines, I get a lot of questions from customers about common issues they face. One of the most frequent problems is capsule sticking in the Capsule Making Machine. Today, I'm gonna share some tips on how to troubleshoot this pesky problem.

WechatIMG1298Hard Capsule Making Machine

Understanding the Causes of Capsule Sticking

Before we jump into the solutions, let's first understand why capsules might stick in the machine. There are a few common reasons:

1. Temperature and Humidity

Capsules are made from materials like gelatin, which are sensitive to temperature and humidity. If the environment is too humid, the capsules can absorb moisture and become sticky. On the other hand, if it's too hot, the gelatin can soften and stick to the machine components.

2. Machine Component Buildup

Over time, residue from the capsules or the filling material can build up on the machine parts, such as the filling nozzles or the tamping pins. This buildup can cause capsules to stick when they come into contact with these parts.

3. Incompatible Filling Materials

Some filling materials may have properties that make them more likely to stick to the capsules or the machine. For example, materials with high fat content or sticky textures can cause problems.

4. Worn or Damaged Machine Parts

If the machine parts are worn out or damaged, they may not function properly, leading to capsule sticking. This could include issues with the alignment of the capsule shells or the movement of the filling mechanisms.

Troubleshooting Steps

Now that we know the possible causes, let's look at some steps you can take to troubleshoot capsule sticking problems:

1. Control the Environment

  • Monitor Temperature and Humidity: Use a thermometer and a hygrometer to keep track of the temperature and humidity in the production area. Aim for a temperature between 20 - 25°C (68 - 77°F) and a relative humidity of 30 - 40%.
  • Use Dehumidifiers or Humidifiers: If the humidity is too high, use a dehumidifier to reduce it. Conversely, if it's too low, a humidifier can help maintain the right level.

2. Clean the Machine Regularly

  • Daily Cleaning Routine: Make sure to clean the machine thoroughly at the end of each production day. Remove any loose capsule fragments or filling material from the exterior and interior of the machine.
  • Deep Cleaning: Perform a deep cleaning every few days or weeks, depending on the production volume. This may involve disassembling some parts of the machine and cleaning them with appropriate cleaning agents. For more information on the types of machines we offer and their maintenance, you can check out our Capsule Shell Making Machine page.

3. Check the Filling Materials

  • Compatibility Testing: Before using a new filling material, test it in small quantities to ensure it doesn't cause sticking problems. You can try running a few test batches and observing the results.
  • Adjust Filling Properties: If the filling material is too sticky, you may need to adjust its composition or viscosity. This could involve adding anti - sticking agents or thinning agents as appropriate.

4. Inspect and Replace Worn Parts

  • Regular Inspections: Schedule regular inspections of the machine to check for worn or damaged parts. Pay particular attention to areas that come into direct contact with the capsules, such as the capsule holders and the filling nozzles.
  • Replace Parts Promptly: If you find any worn or damaged parts, replace them immediately to prevent further sticking problems. You can find suitable replacement parts for our Hard Capsule Making Machine and Hard Gelatin Capsule Machine on our website.

Additional Tips

  • Lubrication: Some machine parts may require lubrication to prevent friction and sticking. Make sure to use the lubricants recommended by the machine manufacturer.
  • Operator Training: Ensure that your operators are properly trained on how to use and maintain the Capsule Making Machine. They should be aware of the troubleshooting steps and be able to identify and address issues promptly.

Conclusion

Capsule sticking problems can be a real headache, but by understanding the causes and following these troubleshooting steps, you can minimize the occurrence of this issue and keep your production running smoothly. If you're still having trouble after trying these tips, don't hesitate to reach out to us. We're here to help you get the most out of your Capsule Making Machine.

If you're in the market for a new Capsule Making Machine or looking to upgrade your existing equipment, we'd love to talk to you. Our team of experts can provide you with detailed information and help you find the right machine for your needs. Contact us today to start the conversation!

References

  • General knowledge in the field of capsule manufacturing technology
  • Internal product manuals and maintenance guides of capsule making machines