Curved Engaging Edge Aperture for Carton Article Retention
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Solution Overview
Problem
Existing carton designs for packaging multiple articles are inefficient in material usage and often lack sufficient strength to securely hold and transport large weights, leading to material wastage and potential security issues during transportation.
Innovation Solution
The design incorporates an engaging panel with a curved first engaging edge and concentrically aligned apertures in multiple layers, providing enhanced article retention through notches and tangential lines, which securely grip articles by engaging with their flanges or projections, and uses a tear-resistant material like corrugated board to improve structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional straight engaging edges are used in aperture design, then the manufacturing is simple, but the structural strength and article retention security are insufficient
Solution Approach 1:
The patent applies curvature to the engaging edge of the aperture by defining it as an arc rather than a straight line. This curved geometry increases the contact area with the article flange, distributing forces more effectively and enhancing structural strength while maintaining manufacturing feasibility through standard die-cutting processes.
2Loss of substance
If minimal material is used in carton design, then cost and environmental impact are reduced, but the strength to hold and transport large weights is compromised
Solution Approach 1:
The patent applies local quality by concentrating material thickness at critical stress points. Specifically, the aperture is formed by die-cutting through multiple layers of corrugated board, creating a locally reinforced region where the stacked layers provide enhanced strength for article retention without requiring the entire carton to use excessive material.
Solution Approach 2:
The patent utilizes composite material structure by stacking multiple layers of corrugated board to form the aperture. This layered composite construction provides superior strength-to-weight ratio, enabling the carton to bear larger weights while using minimal overall material, as the combined layers create a rigid, load-bearing structure at the critical engagement point.
3Reliability
If traditional aperture designs are used, then manufacturing is straightforward, but the security of holding articles during transportation is insufficient
Solution Approach 1:
The curved engaging edge of the aperture creates a larger contact area with the article flange, distributing holding forces more evenly and preventing slippage during transportation. This arc-shaped geometry provides superior article retention security compared to straight edges, while the curvature can be easily implemented through standard die-cutting tools.
Solution Approach 2:
The patent changes the geometric parameters of the aperture by defining the engaging edge as an arc with specific radius characteristics. This parameter modification transforms the engagement mechanism from point-contact to area-contact, significantly improving article retention security while maintaining compatibility with existing manufacturing processes.
Data Source
AI summary
Aspects of the disclosure relate to a top engaging article carrier for packaging one or more articles and a blank for forming the carrier. The article carrier comprises an engaging panel (12A, 12B) having at least one ply and comprising; a first side edge (E1), a first end edge (E2) and a corner (BC) defined by the first side and end edges (E1, E2). The engaging panel (12A, 12B) comprises a corner area (18) extending between the corner (BC) and an article-receiving aperture (A1, A2) in the engaging panel (12A, 12B). The aperture (A1, A2) comprises a first engaging edge (E4) at a position across the corner area (18) from the corner (BC). The first engaging edge (E4) is curved. The first engaging edge (E4) has a radius of curvature (r3) greater than the radius (r1) of the corner aperture (A1, A2).