Biodegradable Honeycomb Insulating Panels
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Solution Overview
Problem
Current packaging methods rely on non-biodegradable materials that are bulky, moisture-absorbing, and take centuries to decompose, posing environmental concerns and a need for sustainable, thermally insulating, and cost-effective alternatives.
Innovation Solution
Biodegradable insulating panels composed of a honeycomb core with granulated pith and moisture-repellent layers, providing thermal insulation while being lightweight and inexpensive, with a density no greater than 300 kg/m3 and a thermal RSI-value of at least 3.0° C·m2/W.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If non-biodegradable polymer packaging (polystyrene, plastics) is used, then thermal insulation and structural strength are improved, but environmental biodegradability deteriorates (taking 500+ years to decompose)
Solution Approach 1:
The patent combines biodegradable materials (paperboard, corrugated fiber, plant-based polymers like PLA) with natural insulation materials (air gaps, plant fibers) to create a composite structure that achieves thermal insulation performance comparable to synthetic foams while being fully biodegradable within months
Solution Approach 2:
The invention utilizes porous structures including air gaps between corrugated layers, honeycomb patterns, and cellular structures that trap air to provide thermal insulation. These porous biodegradable materials replace solid non-biodegradable foams while maintaining insulation properties through air trapping
2Object-affected harmful factors
If non-biodegradable foams and foils are used, then moisture absorption resistance is improved, but environmental sustainability deteriorates
Solution Approach 1:
The patent modifies the surface properties of biodegradable paperboard and fiber materials through treatments (coatings, laminations, or chemical treatments) to reduce moisture absorption while maintaining the bulk material's biodegradability, achieving a balance between moisture resistance and environmental sustainability
3Duration of action of stationary object
If traditional biodegradable materials (cardboard) are used, then environmental friendliness is improved, but thermal insulation performance deteriorates
Solution Approach 1:
The patent divides the packaging structure into multiple layers with air gaps between them (corrugated structures, honeycomb patterns, multi-layer laminates). These segmented structures trap air in discrete cells, significantly enhancing thermal insulation compared to solid cardboard while maintaining biodegradability
Solution Approach 2:
The invention incorporates porous structures including air-filled cavities, honeycomb patterns, and cellular configurations that trap air to provide thermal insulation. These porous biodegradable materials replace solid non-biodegradable foams while maintaining insulation properties through air trapping
4Strength
If non-biodegradable polymer packaging is used, then structural strength and durability are improved, but weight and bulkiness increase
Solution Approach 1:
The patent employs segmented structures like corrugated boards and honeycomb patterns that provide high strength-to-weight ratios. The geometric configurations create rigid structures that resist compression and bending forces while using minimal material, reducing overall weight compared to solid polymer packaging
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 offers a completely biodegradable, thermally insulating packaging solution that maintains product temperature within 0.24° C/min, comparable to non-biodegradable alternatives, while being environmentally friendly and cost-effective.
Implementation Method 1
a moisture repellant layer disposed on exterior surfaces of the first and second layers
Implementation Method 2
granulated pith disposed within the honeycomb core to increase the resistance to heat flow of the panel
Implementation Method 3
a biodegradable honeycomb core disposed between the first and second layers
Data Source
AI summary
A biodegradable insulating panel for a package includes a first layer of biodegradable material, a second layer of biodegradable material opposite the first layer, a moisture repellant layer, a biodegradable honeycomb core, and granulated pith. The moisture repellant layer is disposed on exterior surfaces of the first and second layers. The biodegradable honeycomb core is disposed between the first and second layers. The granulated pith is disposed within the honeycomb core to increase the resistance to heat flow of the panel. The biodegradable insulating panel has a density no greater than about 300 kg/m3. A biodegradable insulating package includes a plurality of insulating panels. The biodegradable insulating package is thermally insulating such that a temperature of an item disposed in the package increases no greater than 0.24° C./min (e.g., during ASTM D3103 test).