Folding Box Stacking Corners for Load Transfer
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Solution Overview
Problem
Folding boxes lack efficient folding processes and stability, particularly in terms of load transfer and stacking, which are crucial for the packaging industry, logistics, and retail requirements.
Innovation Solution
A folding box design featuring a one-piece blank with adjacent and fixed side walls separated by fold lines, including bottom flaps, closure tabs, and stacking corners, which provide high torsional strength and stacking stability through load transfer via outer edges and contact edges, allowing for efficient loading and stacking without visible open waves or slipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional folding box designs are used, then the folding process is simple, but the stacking stability and load transfer efficiency are insufficient
Solution Approach 1:
The folding box is divided into multiple functional elements: side walls with fold lines, bottom flaps with closure tabs, and stacking corners. Each element serves a specific purpose in achieving stable stacking and efficient load transfer, resolving the contradiction between simplicity and stability.
Solution Approach 2:
The blank is pre-configured with fold lines, closure tabs, and stacking corners during manufacturing. This preliminary preparation enables the folding box to achieve high stacking stability and efficient load transfer without requiring complex assembly operations, balancing structural complexity with functional performance.
2Strength
If the folding box uses a simple single-piece blank, then the manufacturing process is efficient, but the torsional rigidity and stability are insufficient
Solution Approach 1:
The single-piece blank is segmented into multiple functional zones with specific fold lines and reinforcement features. This segmentation enables the structure to achieve high torsional rigidity and stability while maintaining manufacturing efficiency, as the blank can be formed in one piece without requiring complex assembly.
Solution Approach 2:
The blank features localized reinforcements at critical areas such as stacking corners and closure tabs. These local quality enhancements provide the necessary torsional rigidity and stability without requiring complex overall structural modifications, maintaining ease of manufacture while improving strength.
3Reliability
If bottom flaps and closure tabs are present, then the box can be closed securely, but the folding process becomes more complex
Solution Approach 1:
The bottom flaps and closure tabs are pre-formed as integral parts of the blank during the folding process. This preliminary action eliminates the need for separate closure operations, achieving secure box closure while maintaining folding process simplicity and efficiency.
4Stability of the object's composition
If stacking corners are added to transfer load, then the stacking stability improves, but the device complexity increases
Solution Approach 1:
The stacking corners are formed as separate functional elements from the side walls, creating distinct load transfer paths. This segmentation enables efficient load transfer and stable stacking while keeping the overall structure relatively simple and easy to manufacture.
Data Source
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AI summary
Folding box made from a single-piece blank with four side walls (2, 3) arranged side by side and separated from each other by transverse fold lines (6) extending in the transverse direction (5), with folding flaps (15) at their upper edges and with pivotable bottom flaps (8) and pivotable closure flaps (10) at their lower edges, wherein the longitudinal fold lines (9) extending at the upper and lower edges of the side walls (2, 3) run substantially parallel and offset in pairs by one material thickness each, such that the fold lines (9) of the closure flaps (10) are offset outwards and the fold lines (9) of the folding flaps (15) located on the side walls (2, 3) are offset inwards, and wherein a bottom flap (8) and a closure flap (10) are arranged alternately at the lower edges of adjacent side walls (2, 3) such thatthat the two mutually pivoted bottom flaps (8) form a folding carton bottom and the pivoted closure flaps (10) at least partially bridge both bottom flaps (8) in the area of their separation joint and are glued to the outer sides of the bottom flaps (8) to fix them, wherein at least one contact edge (14) is formed on each closure flap (10), the ends of which run in such a way that they leave free areas (21) on the underside of the folding carton and that stacking corners (16) are formed on the upper edges of the side walls (2, 3), which act as carrying corners such that the folding carton rests with a free area (21) on the carrying corner of a folding carton placed below it.