Foldable Insulation Liner with Standoffs for Thermal Packaging
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Solution Overview
Problem
Conventional insulation packaging for temperature-sensitive products, such as pharmaceuticals and food, is inefficient in maintaining temperature stability, prone to mechanical damage, and environmentally harmful due to the use of expanded polystyrene foam, which is energy-intensive, non-recyclable, and costly.
Innovation Solution
A foldable insulation liner system for shipping cartons that includes two interlocking components with standoffs to create an air gap, using corrugated fiberboard or plastic cores covered with reflective materials, allowing for compact storage and transportation, and easy recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If molded foam containers (EPS or starch-based) are used for insulation, then thermal insulation performance is improved, but manufacturing cost and energy consumption increase
Solution Approach 1:
The insulation system is divided into multiple functional layers: an outer carton, an insulation liner with reflective material, and standoffs creating air gaps. This segmentation allows each component to perform its specific function efficiently while using less energy-intensive materials than solid foam containers.
Solution Approach 2:
The patent combines multiple materials with complementary properties: corrugated fiberboard for structural support, reflective metalized material for thermal radiation barrier, and air gaps for thermal insulation. This composite approach achieves effective insulation without requiring energy-intensive foam materials.
2Temperature
If molded foam containers are used, then thermal insulation is improved, but environmental friendliness deteriorates due to non-recyclability and production contaminants
Solution Approach 1:
The insulation liner and standoffs are designed to be removable and recyclable. The reflective material can be separated from the corrugated fiberboard core, allowing the fiberboard to be recycled with paper streams and the reflective material to be recovered or disposed of separately, avoiding the permanent waste associated with foam containers.
Solution Approach 2:
By using recyclable corrugated fiberboard and metalized reflective material instead of non-recyclable foam, the patent creates a multi-material system where each component can be processed through appropriate recycling streams, eliminating the environmental persistence and contamination issues of EPS and starch-based foams.
3Temperature
If molded foam containers are used, then insulation performance is improved, but storage and transportation efficiency deteriorates due to bulky pre-formed shapes
Solution Approach 1:
The insulation liner transitions from a flat, compact state during shipping to a three-dimensional insulated structure during use. The corrugated fiberboard and reflective material layers can be folded or assembled around the product, providing insulation only when needed and maximizing shipping efficiency.
Solution Approach 2:
The patent transitions from three-dimensional pre-formed foam containers to two-dimensional flat-pack insulation liners that are assembled in the third dimension at the point of use. This dimensional transformation dramatically reduces shipping volume while maintaining insulation performance through the creation of air gaps and reflective barriers during assembly.
4Strength
If metalized bubble box liners are used, then shock absorption is improved, but thermal insulation performance deteriorates due to heat conduction
Solution Approach 1:
The patent introduces air gaps created by standoffs as an intermediary thermal barrier between the metalized reflective material and the outer carton. This air gap mediation prevents direct thermal conduction pathways while preserving the shock absorption benefits of the structured liner design.
Solution Approach 2:
The insulation system combines reflective metalized material for radiation barrier with air gaps for conduction and convection resistance. This composite structure addresses all three heat transfer mechanisms simultaneously, overcoming the thermal conduction weakness of metalized bubble liners while maintaining their shock absorption capabilities.
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 system provides effective thermal insulation, shock absorption, and reduced shipping and storage costs while being environmentally friendly, outperforming traditional foam containers in thermal performance and recyclability.
Implementation Method 1
The exterior surfaces of the two liner components are configured with standoffs to create an interior generally open interstitial space therebetween. The insulation liner reduces shipping costs, product storage costs, and retail display shelf space compared to foam containers, because the two liner components can be shipped, stored, or displayed flat or, optionally, with the three panels of each of the components folded at the creases.
Implementation Method 2
The exterior surfaces of the two liner components are configured with standoffs to create an interior generally open interstitial space therebetween. The insulation liner provides thermal insulation and shock absorption for at least one object to be shipped.
Implementation Method 3
The insulation liner and outer carton system greatly reduces conduction compared to a conventional 1.5-inch foam container.
Implementation Method 4
The insulation liner and outer carton system addresses all three thermal issues—conduction, convection, and radiation
Implementation Method 5
The insulation liner provides thermal insulation and shock absorption for at least one object to be shipped. The inner core is formed of corrugated fiberboard but may optionally be formed of plastic, paper-based honeycomb packaging material
Data Source
AI summary
Provided is an insulation liner for use inside a shipping carton that affords thermal insulation and shock absorption for an object to be shipped, a liner and carton system, a method of production of the insulation liner, and methods of use. The insulation liner includes a larger component folded into three panels, a smaller component folded into three panels, and standoffs disposed on the surfaces of both the larger component and the smaller component. The standoffs may be oriented inwardly or outwardly. When oriented outwardly they create an interstitial air space that reduces conduction allowing the insulation effect of the liner and carton system to equal or exceed that of a molded polystyrene container of an equal size.