Adjusting machine settings to reduce the effect of ambient temperature changes on the seal strength...

Robust design focuses on improving product and process designs to be less sensitive to variations, such as ambient temperature changes.

Adjusting machine settings to maintain consistent seal strength despite temperature fluctuations is an example of making a process more robust.

Robust design techniques aim to ensure that products and processes perform reliably under varying conditions.

References: "Taguchi's Quality Engineering Handbook" explains the principles of robust design and its application in manufacturing.