CAPSULE PRODUCTION SOFTGEL STEP BY STEP
1. Composition and preparation of the gelatin mass
The basis of each capsules softgel is a gelatin mass consisting of:
- pharmaceutical gelatin (type A or B),
- plasticizer (glycerol, sorbitol),
- water.
Additionally, we use safe dyes, opacifiers (e.g., iron oxides), and—optionally—preservatives. The ingredients are heated and mixed in a special mixer with a vacuum system, which allows for a homogeneous, bubble-free mass. This ensures that each capsule softgel is smooth and durable.
2. Modern encapsulation method softgel
Under contract capsule production softgel We use the most efficient rotary die method, which enables:
- continuous capsule formation and filling,
- precise dosing of the feed (oil, emulsion, suspension),
- tight connection of the halves of the gelatin casing.
The process takes place in an automated encapsulation machine, where two ribbons of gelatin enclose a portion of the liquid feed and are then sealed under pressure and heat. Each capsule softgel leaves the device as a finished, tightly closed product.
3. Quality control in capsule production softgel
High quality capsule production softgel is maintained thanks to full control of parameters:
- thickness of the gelatin ribbon,
- mass and charge temperature,
- weight of each capsule (total, shell and fill).
All data is monitored by PLC systems, and any deviations from the norm are immediately reported. Modern solutions enable high uniformity and a low number of production defects.
4. Drying and stabilizing the capsules softgel
Once formed, the capsules are still moist and soft. They harden in two stages:
- Pre-drying – in rotary tumble dryers with dry air blowing.
- Drying – on perforated trays in climatic chambers (20–25°C, humidity 20–30%).
This allows the capsules to achieve optimal moisture content (6–8%) and durability. Drying time and parameters are individually adjusted to the capsule's composition.
5. Polishing, sorting and packaging of capsules softgel
Finally, the capsules undergo a series of finishing operations:
- polishing (mechanical or air),
- sorting (automatic inspection systems eliminate defective items),
- packing (blisters, bottles or bulk packaging).
The entire process takes place in air-conditioned rooms, preventing moisture reabsorption. Capsules can also be printed or laser-marked.