Asymmetric Pressurized Plastic Container Sidewall Design

The patent applies asymmetry by intentionally designing the container sidewall with non-uniform thickness distribution. Specifically, the sidewall thickness varies in different longitudinal zones to compensate for the bellows effect caused by molded features. This asymmetric thickness profile allows the container to maintain structural integrity and resist tilting under pressurization without requiring uniform thickening throughout, thereby controlling material usage and costs while achieving the desired strength and stability.

The patent applies local quality by varying the sidewall thickness locally in response to specific molded features. Where features like finger grips or other asymmetric moldings are present, the sidewall thickness is increased in specific longitudinal zones to compensate for the bellows effect. This localized thickening provides the necessary structural reinforcement to prevent tilting and lateral deflection while maintaining the aesthetic and functional integrity of the molded features, thereby preserving both consumer utility and container stability.

The patent applies parameter changes by optimizing the sidewall thickness profile as a variable parameter rather than using uniform thickness. The thickness is varied in different longitudinal zones based on the location and magnitude of asymmetric molded features. This parameter optimization allows the container to achieve reliable performance in resisting deflection and tilting while minimizing overall material usage, thereby maintaining competitive pricing while ensuring container performance.