An Eco-Innovative Green Design Method using the Theory of Inventive Problem Solving and Importance–Performance Analysis Tools—A Case Study of Marker Pen …
This study explores innovative designs for the cap of a marker pen, aiming to address the
issues of cap loss and ink evaporation during marker pen usage. This study applies intrinsic …
issues of cap loss and ink evaporation during marker pen usage. This study applies intrinsic …