Hot-Fill Container Vacuum Panel Flexing for Pressure Accommodation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The hot-fill process for bottling liquids, such as juices and sports drinks, results in container deformation and stability issues due to pressure changes as the liquid cools, leading to undesirable distortion and aesthetic concerns during labeling, packaging, and shipping.
Innovation Solution
A container design featuring first, second, and third vacuum panels oriented in opposite directions, with diagonal columns, that flexes to accommodate internal pressure changes without causing uncontrollable distortion, maintaining stability and usability while allowing for controlled deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container is sealed after hot-fill, then the liquid is preserved and sterile, but the container deforms and distorts due to pressure changes as the liquid cools
Solution Approach 1:
The container wall is segmented into multiple vacuum panels (first vacuum panel, second vacuum panel, third vacuum panel) separated by diagonal columns. This segmentation allows each panel to independently respond to pressure changes, distributing the deformation across multiple segments rather than allowing uncontrolled overall collapse, thus maintaining sterility while reducing harmful deformation.
Solution Approach 2:
The container structure is designed to be dynamically responsive to pressure changes. The vacuum panels are configured to flex and deform in a controlled manner when internal pressure changes, allowing the container to adapt to pressure variations without causing damage or excessive distortion, while maintaining its sealed sterile state.
2Ease of manufacture
If the container wall is made rigid to maintain shape, then manufacturing and shipping are easier, but the container cannot accommodate pressure changes without deformation
Solution Approach 1:
Different regions of the container wall have different properties. The diagonal columns provide rigid structural support in specific locations, while the vacuum panels between columns are designed to be more flexible to accommodate pressure changes. This local differentiation allows the container to maintain overall shape for easy manufacturing while having localized flexibility for pressure accommodation.
Solution Approach 2:
The container wall combines elements of varying rigidity and flexibility within a single structural system. The composite structure integrates rigid diagonal columns with more flexible vacuum panels, creating a hybrid wall that simultaneously provides manufacturing ease through overall shape maintenance and pressure accommodation through localized flexibility.
3Adaptability or versatility
If the container deforms to accommodate pressure changes, then pressure accommodation is achieved, but the container becomes difficult to handle and ship
Solution Approach 1:
By segmenting the container wall into multiple vacuum panels separated by diagonal columns, the deformation is distributed across multiple segments. This segmentation ensures that no single area collapses excessively, maintaining enough structural integrity for easy handling and shipping while still accommodating pressure changes through the coordinated flexing of individual panels.
Solution Approach 2:
The container is designed with dynamic characteristics that allow controlled deformation during pressure changes while maintaining handling ease. The vacuum panels can flex dynamically in response to pressure variations, but the overall container shape is maintained through the diagonal column structure, ensuring it remains easy to handle and ship.
4Reliability
If the container is designed with multiple vacuum panels and diagonal columns, then pressure changes are accommodated controlably, but the device complexity increases
Solution Approach 1:
The container wall is divided into multiple vacuum panels separated by diagonal columns, creating a segmented structure that provides controlled pressure accommodation. While this segmentation does increase structural complexity, it enables reliable pressure control by distributing forces across multiple segments, preventing uncontrolled deformation.
Solution Approach 2:
The diagonal columns are positioned asymmetrically to create specific structural patterns that favor controlled deformation in certain directions while maintaining stability in others. This asymmetric arrangement of columns and panels provides reliable pressure control by guiding the deformation pattern, justifying the increased structural complexity through functional benefit.
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 maintains stability and deforms predictably, reducing volume by 3-5% while preventing significant distortion, ensuring it can withstand shipping forces and retain aesthetic appeal.
Implementation Method 1
In response to a change in an internal container pressure, the container flexes at the first vacuum panel such that a surface of the first vacuum panel increases in concavity in response to an increasing pressure change
Implementation Method 2
the container flexes at the first vacuum panel such that a surface of the first vacuum panel increases in concavity
Data Source
AI summary
A container is provided with a body portion. The body portion includes a first vacuum panel, a second vacuum panel, a third vacuum panel, a first diagonal column between the first vacuum panel and the second vacuum panel, and a second diagonal column between the second vacuum panel and the third vacuum panel. The second vacuum panel and the third vacuum panel are oriented in opposite directions. In response to a change in an internal container pressure, the body portion flexes at the first vacuum panel such that a surface of the first vacuum panel increases in concavity in response to an increasing pressure change.