As an important carrier for modern pharmaceutical and health care product packaging, the synthesis method of gelatin capsules has formed a mature process system after long-term development.Understanding the manufacturing process of gelatin capsules will help related companies grasp product quality and market demand. Especially in international trade, different countries have different requirements for capsule formulas and production standards, so it is particularly important to master the basic production process.
The core raw material of gelatin capsules is pharmaceutical grade gelatin, which is usually derived from collagen hydrolysate in animal bones or skin. During the production process, gelatin needs to be dissolved in water at a specific temperature to form a uniform glue solution. To ensure the elasticity and stability of the capsule, an appropriate amount of plasticizer, such as glycerol or sorbitol, may be added to adjust the viscosity of the glue solution and the physical properties after drying.
The key step of the synthesis process is dipping and molding. The prepared glue solution is coated on a rotating mold through an automatic dipping device. The shape of the mold determines the size and specifications of the final capsule. The mold after glue coating enters the drying tunnel and is dehydrated under a controlled temperature and humidity environment to solidify the glue film. The dried capsule is separated from the capsule cap, trimmed, filled with drugs or health products, and sealed to form a complete capsule product.
Modern gelatin capsule production focuses on hygiene and automation. To avoid microbial contamination, the production environment must meet GMP standards, and the equipment design is also aimed at reducing manual contact. In addition, to meet vegetarian or specific religious needs, plant-based capsules (such as hydroxypropyl methylcellulose capsules) have become an alternative. Their synthesis method is similar to that of gelatin capsules, but the raw materials and process parameters are adjusted.
In international trade, the export of gelatin capsules must meet the certification requirements of the target market, such as the US FDA, EU CE or China GMP standards. In the future, as consumers pay more attention to health and environmental protection, the production process of gelatin capsules may be further optimized to meet more stringent quality and sustainability requirements.
