Development of new shaped punch to predict scale-up issue in tableting process

Area of Science:

• Pharmaceutical Sciences
• Manufacturing Engineering
• Materials Science

Background:

• Tableting processes frequently encounter scale-up challenges, including capping, sticking, and tablet thickness variations, particularly at commercial production scales.
• Existing laboratory-scale methods may not accurately predict these issues, leading to costly production problems.

Purpose of the Study:

• To introduce and evaluate a novel "size-adjusted for scale-up" (SAS) punch designed to simulate commercial scale tableting conditions.
• To assess the SAS punch's capability in predicting scale-up issues such as capping and tablet thickness differences.

Main Methods:

• The SAS punch was designed to replicate the total compression time characteristic of commercial tableting machines.
• Three distinct lubricated powder blends were compressed into tablets using a laboratory tableting machine fitted with SAS punches.
• Tablet thickness and the incidence of capping were systematically observed and analyzed.

Main Results:

• The SAS punch successfully replicated scale-up issues typically observed with commercial tableting machines.
• Differences in tablet thickness and capping phenomena were accurately predicted using the SAS punch on a laboratory scale.

Conclusions:

• The SAS punch is a valuable tool for anticipating and mitigating scale-up challenges in pharmaceutical tableting.
• Implementing SAS punches in early-stage development can improve the efficiency and reliability of commercial tablet production.