Hard capsule basic formula gelatin: 60-70% of total weight. Water: 30-40%, used to dissolve gelatin.
Color: Optional, for capsule coloring. Preservatives: such as sodium benzoate to ensure the preservation of the capsule.
2. Hard capsule production process to prepare gelatin solution: Dissolve gelatin in warm water to form a thick gelatin solution.
Dip mold: The initial shape of the capsule shell after being pulled, formed by dipping the capsule mold into a gelatin solution.
Drying: Air drying or freeze-drying to remove moisture, so that capsule shell lymphoma and set.
Cut and trim: Remove the dried capsule shell from the mold and trim its open end.
Assembly: two parts of the capsule shell (cap and body) are assembled to form a complete hard capsule.
Inspection and packaging: The finished product is inspected and packaged after it is qualified.
3. Formulation and process adjustment of hard capsules of different specifications
Large size (000#, 00#) : The formula should maintain a high Bloom value (200-250), increase the strength and strength of the capsule shell, and ensure that it is not easy to deform when filling a large dose of contents.
Medium size (0#, 1#) : Maintain a medium Bloom value (150-200) to ensure the flexibility of the capsule shell, while ensuring sufficient strength.
Small size (2#-5#) : The moisture content of the formula can be slightly higher to maintain the softness and elasticity of the capsule shell, ensuring that the small size capsule is easy to swallow