Hot-Fillable Plastic Container With Variable Dynamic Base
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Solution Overview
Problem
Conventional hot-fill plastic containers with symmetrical designs are prone to non-uniform distortion under thermal and pressure differential conditions during the hot-filling process, making it challenging to introduce aesthetically unique and functional asymmetrical designs in the beverage market.
Innovation Solution
A hot-fillable plastic container design featuring a variable dynamic base, circumferential groove rings, longitudinal grooves, and vacuum panels that deflect in response to pressure differentials, along with stiffening beads and ribs, to minimize deformation and maintain structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If an asymmetrical sidewall design is used to create unique container appearance, then aesthetic distinction and market uniqueness are improved, but non-uniform distortion and shape deformation occur under hot-filling pressure differential conditions
Solution Approach 1:
The sidewall is segmented into multiple regions with different structural characteristics - a front sidewall segment with longitudinal grooves for aesthetic design and a rear sidewall segment with vacuum panels for structural support. This segmentation allows each region to serve its specific function while maintaining overall shape stability during hot-filling operations.
Solution Approach 2:
Different portions of the sidewall are given different local properties - the front segment has grooves for styling while the rear segment has vacuum panels for resistance against pressure differential. This local differentiation enables the container to maintain aesthetic uniqueness while preventing non-uniform distortion under thermal and pressure conditions.
2Stability of the object's composition
If conventional symmetrical sidewall design is used to prevent non-uniform distortion, then shape stability is improved, but aesthetic uniqueness and market differentiation are lost
Solution Approach 1:
The container employs asymmetrical sidewall features including longitudinal grooves on the front segment and vacuum panels on the rear segment. This asymmetrical design creates visual distinction in the marketplace while the strategic placement of structural elements prevents non-uniform distortion during hot-filling operations.
3Strength
If vacuum panels are added to accommodate pressure differential, then resistance to distortion is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The vacuum panels are integrated directly into the rear sidewall segment as part of the molded container structure, combining the support function with the wall structure itself. This merging approach provides distortion resistance while minimizing additional complexity compared to separate reinforcement components.
Solution Approach 2:
The vacuum panels are configured to be flexible and deflect in response to pressure differential changes during hot-filling and cooling operations. This dynamic response allows the panels to accommodate pressure variations without causing distortion, while returning to their original position when pressure equalizes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The container effectively resists distortion and maintains its shape under varying thermal and pressure conditions, ensuring both visual appeal and functionality, thus overcoming the limitations of conventional designs.
Implementation Method 1
one of the upper rear sidewall segment or the lower rear sidewall segment includes at least one vacuum panel configured to deflect in response to the pressure differential between the chamber and the exterior of the container body
Implementation Method 2
The bottom portion includes a support surface and a variable dynamic base portion configured to deflect in response to a pressure differential between the chamber and an exterior of the container body
Data Source
AI summary
Plastic container comprises a container body having a bottom portion, a sidewall portion and an upper portion, with a chamber defined therein. The bottom portion includes a support surface and a variable dynamic base portion. The sidewall portion includes a lower circumferential groove ring, an upper circumferential groove ring, and a pair of longitudinal grooves extending longitudinally therebetween to define a front sidewall segment and a rear sidewall segment. The rear sidewall segment comprises a waist groove extending circumferentially between the pair of longitudinal grooves to define an upper rear sidewall segment and a lower rear sidewall segment, wherein one of the upper rear sidewall segment or the lower rear sidewall segment includes two vacuum panels with a rigid longitudinal support therebetween.