Orthogonal Folded Dunnage Bundle for Compact Thermal Insulation

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Solution Overview

Problem

Current methods for assembling on-demand sheet-based insulating liners in shipping containers are labor-intensive and limit throughput, with existing insulating materials being bulky, expensive, and not fully recyclable.

Innovation Solution

A method for bundling insulating dunnage products into a compact configuration, comprising at least two strips of packing material folded orthogonally with restraining members, allowing for easy storage and rapid deployment within shipping containers, enhancing throughput and providing a cost-effective, curbside-recyclable solution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If insulating materials are used to line shipping containers, then thermal insulation performance is improved, but the materials are bulky and occupy excessive storage space

Engineering Contradiction:
Improvethermal insulation performanceVSAvoidstorage space occupation
Core Design Contradiction:
TemperatureVSVolume of moving object

Solution Approach 1:

The dunnage strip is folded into a compact bundled configuration that nests within itself, with the strip folded back on itself multiple times to create a dense, space-efficient package that maintains all necessary insulation materials

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The insulating liner is segmented into a folded strip configuration rather than a continuous blanket, allowing it to be divided into manageable sections that can be compactly bundled while maintaining thermal insulation functionality when deployed

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If insulating liners are assembled on-demand in shipping containers, then customization for different container sizes is improved, but labor time and assembly speed increase

Engineering Contradiction:
Improvecustomization for different container sizesVSAvoidlabor time for assembly
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The dunnage strip is pre-assembled in a compact bundled configuration that maintains the insulation structure, allowing it to be quickly deployed as a complete unit rather than assembled from separate components at the shipping location

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The folded dunnage strip is designed to be dynamically deployed from a compact state to an expanded insulating configuration, allowing rapid transformation from storage to functional state to reduce assembly time

Inventive Principle:
Principle #15Dynamics

3Temperature

If traditional insulating materials are used, then thermal insulation is improved, but cost and recyclability are worsened

Engineering Contradiction:
Improvethermal insulationVSAvoidcost-effectiveness and recyclability
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The material composition is changed from traditional non-recyclable insulating materials to a paper-based dunnage product that provides equivalent thermal insulation performance while being curbside recyclable and cost-effective

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The dunnage strip uses a composite structure with an outer layer and an inner insulating layer, combining different material properties to achieve both thermal insulation performance and recyclability in a single integrated product

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP3784593B1Bundle of packing material, method of making and using the same
Publication Date: 2024.03.13 RANPAK CORP
  • EP3784593B1 patent drawingFigure 1
  • EP3784593B1 patent drawingFigure 2
  • EP3784593B1 patent drawingFigure 3~6

AI summary

A bundle of packing material includes at least two strips of packing material folded into a compact configuration. The strips of packing material include a top strip having a length dimension between first and second end portions and a central portion between the first end portion and the second end portion, and a bottom strip having a length dimension between first and second end portions and a central portion between the first end portion and the second end portion. The central portion of the top strip overlays the central portion of the bottom strip and the length dimension of the top strip is oriented orthogonal to the length dimension of the bottom strip. The first and second end portions of top strip are folded over the central portions, and the first and second end portions of the bottom strip are folded over the central portions.