Triangular-Wing Overpack Liner for Wrinkle Reduction
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Solution Overview
Problem
Two-dimensional liners used in overpack assemblies often face issues with dispensability, volume optimization, structural concerns due to wrinkles and creases, and cleanliness problems when positioned in three-dimensional containers.
Innovation Solution
A method of forming a three-dimensional liner by attaching a first sheet to a second sheet along a perimeter edge, pulling apart at the center to create triangular wings, forming vertical seams, and optionally truncating and folding these wings inward, allowing the liner to be easily positioned within an overpack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a two-dimensional liner is used in a three-dimensional container, then the liner can be simple to manufacture, but it causes wrinkles and creases that affect dispensability and structure
Solution Approach 1:
The patent transforms the liner from a two-dimensional flat structure to a three-dimensional configured structure by forming triangular wings that extend from the central body. This dimensional transition allows the liner to conform to the three-dimensional container shape, eliminating wrinkles and creases while maintaining manufacturing simplicity through the use of flat pattern pieces that are easily cut and assembled.
2Ease of manufacture
If a two-dimensional liner is positioned in a three-dimensional container, then the liner can be easily manufactured, but it creates volume optimization problems
Solution Approach 1:
By configuring the liner into a three-dimensional shape with triangular wings, the patent enables the liner to fully utilize the available volume within the three-dimensional container. The wings extend outward from the central body, creating a configuration that matches the container's geometry and maximizes volume utilization while remaining easy to manufacture from flat pattern pieces.
3Ease of manufacture
If a two-dimensional liner is used, then the manufacturing process is simple, but cleanliness issues arise due to difficulty in cleaning
Solution Approach 1:
The three-dimensional configuration with triangular wings creates a liner structure that is easier to clean and maintain cleanliness. The configured shape allows for better access to all surfaces, eliminates creases that trap contaminants, and enables more effective cleaning procedures while still being manufactured simply from flat pattern pieces.
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 solution results in a three-dimensional liner that fits seamlessly within overpacks, minimizing wrinkles, optimizing volume, and enhancing cleanliness, facilitating easy assembly and dispensing.
Implementation Method 1
The attachment seam can be formed by welding the first sheet to the second sheet along the perimeter edge
Implementation Method 2
pulling the first sheet apart from the second sheet at a center of the liner, forming a three-dimensional liner with triangular wings
Data Source
AI summary
An overpack assembly and a method of making an overpack assembly is disclosed. The overpack assembly includes a liner positioned within an overpack. In one embodiment, the method includes making a liner including providing a first sheet including a fitment positioned over a second sheet, the first sheet attached to the second sheet along an attachment seam at an entire perimeter edge. The first sheet is pulled apart from the second sheet at a center of the liner, forming a three-dimensional liner with triangular wings. A vertical seam is formed across each triangular wing, the vertical seam being perpendicular to the attachment seam, where a length of the vertical seam corresponds to the height of the liner when in use. The liner is positioned within the overpack.