Recyclable Insulated Shipping Container with Loose-Fill Cellulose
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Solution Overview
Problem
Existing temperature-controlled shipping containers pose challenges for recycling due to the combination of materials like cardboard and plastic, which require separation and often cannot be recycled, leading to landfill disposal.
Innovation Solution
A recyclable, thermally insulated shipping container constructed entirely from organic fiber materials, including a corrugated cardboard outer and inner structure, filled with loose-fill cellulose insulation, allowing for curbside recycling without material separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional insulated shipping containers use a combination of cardboard and plastic materials (EPS panels), then thermal insulation effectiveness is improved, but recyclability deteriorates because the different materials must be separated for recycling or cannot be recycled at all
Solution Approach 1:
The patent merges the container structure and insulation material into a single integrated cardboard component. The cardboard walls are constructed with an insulating core layer and outer protective layers formed as one unified structure, eliminating the need for separate EPS panels and adhesive bonding. This integration maintains thermal insulation effectiveness while enabling complete recyclability of the container.
Solution Approach 2:
The patent employs composite cardboard construction with multiple functional layers: an insulating core layer providing thermal insulation, outer protective layers offering structural strength and moisture resistance, and sealed edge portions preventing moisture ingress. This composite material approach achieves the thermal performance of plastic-insulated containers while using entirely recyclable cardboard materials.
2Ease of operation
If loose-fill insulation is used in deep cavities, then ease of filling is improved, but uniformity of insulation density deteriorates due to higher density at the bottom and lesser density at the top
Solution Approach 1:
The patent divides the insulation filling process into multiple sequential portions. The dispensing device delivers insulation material in controlled segments rather than a single continuous flow, allowing the cavity to be filled in stages. This segmentation enables uniform distribution of insulation density throughout the deep cavity while maintaining the simplicity of loose-fill installation.
Solution Approach 2:
The patent implements periodic dispensing and packing cycles during the insulation filling process. The system alternates between dispensing insulation material and mechanically packing it to achieve uniform density. This periodic action ensures consistent insulation performance throughout the cavity while keeping the overall process automated and efficient.
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 enables fully recyclable, thermally insulated shipping containers that maintain uniform insulation density and thermal value, addressing the recycling challenges of traditional containers while being environmentally friendly.
Implementation Method 1
an insulated shipper comprises a cardboard outer box, inorganic insulating materials, such as a plurality of expanded polystyrene (EPS) panels or pieces for insulation
Implementation Method 2
phase change material (PCM) gel packs, bricks, etc. used to heat or cool the interior of the shipper
Data Source
AI summary
A recyclable, thermally insulated shipping container is entirely constructed from organic fiber materials in such a manner that the container is curbside recyclable without separation of component materials. The container includes a corrugated cardboard outer box having a bottom wall, a plurality of sidewalls and a top wall, a corrugated cardboard inner liner assembly comprising a corrugated cardboard inner box having a bottom wall and a plurality of sidewalls, and a corrugated cardboard lid assembly. The outer box, inner liner assembly and lid assembly cooperate to create a plurality of thermally insulated cavities which are sequentially filled and uniformly packed with pre-portioned, predetermined volumes of loose-fill cellulose (organic fiber) insulation to create a consistent insulating value throughout the container.