How to adjust the thickness of the softgel shell produced by the Four Units Seamless Softgel Machine?
Jan 15, 2026
Hey there! As a supplier of the Four Units Seamless Softgel Machine, I often get asked about how to adjust the thickness of the softgel shell. It's a crucial aspect, as the shell thickness can greatly impact the quality and performance of the softgels. So, let's dive right in and explore the methods to make those adjustments.
Understanding the Basics
First off, it's important to know that the thickness of the softgel shell is determined by several factors. The main ones include the formulation of the shell material, the operating parameters of the machine, and the overall process control. The shell material typically consists of gelatin, plasticizers, and water, and the ratio of these components can significantly affect the shell thickness.
Shell Material Formulation
The gelatin-to-plasticizer ratio is a key factor. If you want a thicker shell, you can increase the proportion of gelatin in the formulation. Gelatin provides the structure and strength to the shell. For example, if your current formulation has a 2:1 ratio of gelatin to plasticizer, you could try increasing it to 3:1. However, be careful not to go overboard, as too much gelatin can make the shell too brittle.
The water content also plays a role. More water in the formulation can make the shell thinner because it dilutes the gelatin and plasticizer mixture. So, if you need a thicker shell, you might want to reduce the amount of water slightly. But keep in mind that reducing water too much can make the mixture difficult to process.
Machine Operating Parameters
The speed of the machine is another important factor. A slower machine speed generally results in a thicker shell. When the machine runs at a slower pace, there's more time for the shell material to coat the filling and form a thicker layer. On the Four Units Seamless Softgel Machine, you can adjust the speed through the control panel. Just be aware that slowing down the machine too much can reduce the production efficiency.
The temperature of the shell material also affects the thickness. Higher temperatures can make the material more fluid, resulting in a thinner shell. You can lower the temperature of the material reservoir to increase the viscosity of the shell material, which in turn can lead to a thicker shell. However, you need to find the right balance, as too low a temperature can cause the material to solidify and clog the machine.
Process Control
Consistent mixing of the shell material is essential. An unevenly mixed material can lead to variations in shell thickness. Make sure to use a high - quality mixer and follow a strict mixing protocol. Mix the gelatin, plasticizer, and water thoroughly for a set amount of time at a specific speed.
The pressure applied during the encapsulation process can also impact the shell thickness. Higher pressure can force the shell material to spread more thinly, resulting in a thinner shell. You can adjust the pressure settings on the machine to achieve the desired thickness. Lowering the pressure slightly can help in getting a thicker shell, but again, you need to be careful not to disrupt the encapsulation process.
Comparing with Other Machines
If you're new to seamless softgel machines, you might be interested in other options. We also offer the One Column Seamless Softgel Machine, which is a great choice for small - scale production. It has similar principles for adjusting shell thickness, but the operating parameters might vary slightly due to its different design.
The One Unit Seamless Softgel Machine is ideal for those who are just starting out or have limited production needs. It's more compact and easier to operate, but still allows you to adjust the shell thickness using similar methods as the Four Units machine.
And if you need a bit more production capacity than the one - unit machine but less than the four - unit one, the Two Units Seamless Softgel Machine could be a good middle - ground option. It also offers flexibility in adjusting the shell thickness.
Troubleshooting
If you're having trouble getting the right shell thickness, here are some common issues and solutions. If the shell is too thin, check the machine speed, temperature, and pressure settings. Make sure the shell material formulation has the correct ratios of gelatin, plasticizer, and water.


If the shell is too thick and uneven, it could be due to poor mixing of the shell material. Go back and ensure that the mixing process is consistent and thorough. Also, check for any blockages in the machine's nozzles or channels, as these can disrupt the flow of the shell material and cause thickness variations.
Conclusion
Adjusting the thickness of the softgel shell produced by the Four Units Seamless Softgel Machine requires a combination of proper shell material formulation, careful adjustment of machine operating parameters, and strict process control. By understanding these factors and making the right adjustments, you can produce softgels with the desired shell thickness.
If you're in the market for a seamless softgel machine or need more information on adjusting shell thickness, don't hesitate to get in touch. We're here to help you make the most of your production process and ensure high - quality softgel products.
References
- "Softgel Technology and Manufacturing" by industry experts
- Internal research and development reports from our company on seamless softgel production.
