The production of a two-piece hard capsule is a precision process involving several high-tech phases:

1. Solution Preparation: A polymer solution (gelatin or HPMC) is prepared in demineralized water at controlled temperatures ($60–70°C$).

2. Dipping: Precision-engineered stainless steel "pins" are dipped into the solution. The viscosity of the liquid and the temperature of the pins determine the wall thickness.

3. Drying: The pins pass through high-volume air kilns where humidity is strictly controlled to prevent "warping" or "dimpling."

4. Stripping & Joining: The dried shells are stripped from the pins, trimmed to exact