Self-Expandable Insulating Box Liner with Puncture-Activated Foam
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Solution Overview
Problem
Existing insulating box liners for corrugated boxes are costly, require multiple pieces for assembly, lack thermal performance, and are not self-expandable, making them inefficient and environmentally unfriendly.
Innovation Solution
A self-expandable insulating box liner composed of flexible polyurethane foam panels sealed between oxygen barrier films, which can be compressed for compact storage and expanded to fit and insulate a corrugated box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional insulating box liners are used, then thermal insulation is provided, but they require multiple pieces for assembly and increase device complexity
Solution Approach 1:
The patent combines multiple insulating panels into a single one-piece molded foam structure that provides complete box liner functionality. This eliminates the need to assemble multiple separate pieces while maintaining thermal insulation performance, directly resolving the contradiction between reliability and device complexity.
2Reliability
If molded expanded polystyrene (EPS) coolers are used, then effective insulation is achieved, but they are not collapsable and increase shipping costs
Solution Approach 1:
The patent employs flexible foam material that transitions from a rigid insulating state during use to a compressed collapsible state for shipping. This dynamic property allows the box liner to maintain effective insulation when deployed while reducing to a compact form for efficient palletization and reduced shipping costs, resolving the contradiction between insulation reliability and shipping volume.
3Reliability
If insulating box liners are shipped in expanded form, then they provide effective insulation, but they consume excessive warehouse space and increase shipping costs
Solution Approach 1:
The flexible foam box liner enables dynamic volume reduction by compressing the insulating material during storage and shipping, then expanding it at the point of use. This allows the same product to deliver high thermal insulation performance when deployed while occupying minimal warehouse space during logistics, directly resolving the contradiction between insulation reliability and shipping efficiency.
4Device complexity
If metalized bubble box liners are used, then a one-piece structure is achieved, but thermal performance is much lower
Solution Approach 1:
The patent utilizes molded flexible foam material that combines the structural simplicity of a one-piece design with superior thermal insulation properties. The foam material's inherent cellular structure provides high thermal resistance, resolving the contradiction by achieving both structural simplicity and high thermal performance, unlike metalized bubble liners that sacrifice insulation for simplicity.
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 reduces shipping costs and conserves warehouse space by allowing efficient packing and provides effective insulation with minimal materials, while being environmentally friendly.
Implementation Method 1
The insulating panel portions are compressed to a second, compressed thickness smaller than the first, pre-compressed thickness prior to being sealed between the two layers of the oxygen barrier film
Implementation Method 2
The insulating panel portions are movable from the second, compressed thickness to the first, pre-compressed thickness when one of the two layers of oxygen barrier film is punctured
Implementation Method 3
Each of the insulating panel portions is sealed between the two layers of the oxygen barrier film
Data Source
AI summary
A self-expandable insulating box liner includes a first insulating panel assembly, a second insulating panel assembly, and a plurality of layers of an oxygen barrier film. Each of the first and second insulating panel assemblies includes an insulating panel portion sealed between two layers of the oxygen barrier film. Each of the insulating panel portions has a first, pre-compressed thickness. The insulating panel portions are compressed to a second, compressed thickness smaller than the first, pre-compressed thickness prior to being sealed between the two layers of the oxygen barrier film. When compressed and sealed, the insulating panel portions retain the second, compressed thickness. The insulating panel portions are movable from the second, compressed thickness to the first, pre-compressed thickness when one of the two layers of oxygen barrier film is punctured.