Development of lightweighting technology focused on the container bottom
Published: September 2026
Collaboration Outcomes
Coca-Cola Japan, in collaboration with Toyo Seikan, adopted high-stretch molding and bottom-lightweighting technology. By using a specially designed preform and optimizing molding conditions, the companies achieved lightweighting primarily at the bottom of the container and received an award in the Improvement & Rationalization Category at the 48th Kinoshita Prize Awards organized by the Japan Packaging Institute.
100% rPET “Coca-Cola” (500 ml) bottle with
reduced weight and an image of the bottle bottom
(This English version is based on the original Japanese Alliance Case Study prepared in FY2024.)
