Foldable Corrugated Edge Protector for Heavy Load Stacking
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Solution Overview
Problem
Existing edge protectors for packaging fail to maintain their shape, leading to structural collapse and damage, are expensive to manufacture, and require significant material and time for assembly, while also not providing sufficient load-bearing capacity for heavy stacking.
Innovation Solution
A foldable edge protector made from corrugated paperboard with scored panels that can be easily assembled into overlapping sections, using adhesive to maintain shape and structure, with notched and un-notched sections providing reinforcement and cushioning, allowing for secure placement around corners without deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional edge protectors are made bulky to provide structural reinforcement, then load-bearing capacity is improved, but packaging space is wasted and weight increases
Solution Approach 1:
The edge protector is divided into multiple panels (typically 3-5 panels) that are folded together to form a tubular structure. This segmentation allows the protector to achieve structural strength through the folded configuration rather than requiring a single bulky piece, thereby reducing material volume while maintaining load-bearing capacity.
Solution Approach 2:
The edge protector transitions from a flat 2D blank to a 3D tubular structure through folding. This dimensional transformation creates a hollow cylindrical form that provides structural reinforcement along the edge while using minimal material, solving the contradiction between strength and volume.
2Strength
If traditional edge protectors are made with sufficient material for structural support, then reinforcement is improved, but manufacturing cost and assembly time increase
Solution Approach 1:
The edge protector blank is pre-scored with fold lines during manufacturing, creating predetermined folding paths. This preliminary action allows the protector to be quickly assembled by simply folding along the scored lines without requiring complex assembly tools or procedures, thereby maintaining structural integrity while improving assembly speed.
Solution Approach 2:
The protector is designed as a segmented structure with multiple panels that fold together. This segmentation simplifies the assembly process compared to forming a single complex piece, allowing for faster manufacturing and assembly while still providing the necessary structural reinforcement through the folded configuration.
3Ease of manufacture
If traditional edge protectors are made simple and economical, then manufacturing cost is reduced, but shape retention and structural stability deteriorate
Solution Approach 1:
The blank is pre-scored with fold lines that create natural folding paths and creases. This preliminary scoring action guides the folding process and helps the protector maintain its tubular shape once assembled, providing shape retention without requiring additional expensive materials or complex manufacturing steps.
Solution Approach 2:
The scoring depth and pattern are carefully controlled to create fold lines that provide both flexibility for assembly and rigidity for shape retention. By optimizing the scoring parameters, the protector achieves stable shape maintenance while keeping manufacturing simple and economical.
4Ease of operation
If edge protectors are made to hold their shape for proper placement, then handling ease is improved, but material complexity and manufacturing difficulty increase
Solution Approach 1:
The fold lines are pre-scored to create natural bending paths that guide the protector into its final tubular shape. This preliminary action ensures the protector holds its shape during handling and placement without requiring complex internal supports or additional structural elements, maintaining simplicity while improving handling ease.
Data Source
AI summary
A sheet of foldable material having a plurality of laterally spaced parallel fold lines dividing the sheet into consecutive panels to allow for folding of the panels into overlapping engagement. A notched edge protecting section comprising at least two panels folded into an overlapping engagement and formed from the removal of material from the overlapping panels. An un-notched edge protecting section comprising at least two panels folded into an overlapping engagement and including a first and second leg each having an inner longitudinal edge, outer longitudinal edge and an outside edge wherein the angle between said first longitudinal edge and said outside edge is greater than 90 degrees. A third and a fourth leg formed from the folding of said un-notched edge protecting section so that at least a portion of the inner longitudinal edges of the first and second legs contact one another.