Packaging Box Centering Recesses and Adhesive Tabs
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Solution Overview
Problem
Existing packaging boxes tend to slide when stacked, leading to handling issues during transport, and previous solutions either require expensive accessories or weaken the box structure, while also being fragile and not suitable for low grammage or perfect vertical stacking.
Innovation Solution
A packaging box design featuring a bottom with recesses and a top with adhesively bonded tongues of complementary shape, where the recesses and tongues are entirely located inside the faces, allowing for effective centering and interlocking without the need for additional accessories, and a method and device for manufacturing these boxes using corrugated sheet board cutouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lateral studs with orifices are used for centering boxes, then sliding is prevented, but the system becomes fragile and cannot withstand repeated handling
Solution Approach 1:
The centering function is segmented into multiple interaction points: recesses in the bottom and tongues on the top face, each contributing to stability. This distributes mechanical stress across multiple locations rather than concentrating it in single studs, improving durability during repeated handling.
Solution Approach 2:
The tongues are nested within recesses of complementary shape, creating an interlocking mechanism where one box fits into another. This nested configuration provides robust mechanical interconnection that withstands repeated handling better than surface-level stud-orifice systems.
2Reliability
If tabs with complementary shapes are used for interlocking, then lateral blocking is achieved, but the blank shape requires a double set of tabs increasing complexity
Solution Approach 1:
The interlocking mechanism is extracted from the side walls and relocated to the top and bottom faces. Instead of requiring tabs on all four sides, the solution uses recesses in the bottom and tongues on the top, simplifying the blank shape while maintaining lateral blocking through vertical stacking interference.
Solution Approach 2:
The blocking mechanism transitions from lateral (horizontal) tabs to vertical dimension features: recesses and tongues extend in the vertical direction, preventing lateral sliding through height-based interference rather than width-based tab engagement.
3Reliability
If tongues are held in side walls and adhesively bonded, then good centering and blocking are achieved, but the walls are weakened
Solution Approach 1:
The adhesive bonding operation is extracted from the side walls and relocated to the top face. Tongues are now bonded to the top surface rather than being embedded in side walls, preserving wall integrity while maintaining centering and blocking functions through the top-face bonding mechanism.
Solution Approach 2:
The bonding location shifts from the vertical side walls to the horizontal top face. This dimensional relocation allows the same centering function to be achieved without compromising structural wall strength, as the top face is a non-load-bearing surface.
4Manufacturing precision
If recesses and tongues are used for centering, then perfect vertical stacking is enabled, but additional manufacturing steps are required
Solution Approach 1:
The centering recesses and blocking tongues are merged into a single integrated feature set formed during the die-cutting process. Rather than adding separate centering components, the recesses and tongues are incorporated into the box blank itself, achieving precision stacking without additional manufacturing steps.
Solution Approach 2:
The recesses and tongues are pre-formed during the blank fabrication stage using die-cutting, before the boxes are assembled and stacked. This preliminary creation of centering features eliminates the need for post-assembly adjustments or additional centering operations.
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 prevents sliding during stacking, enables perfect vertical alignment, and allows for lightweight grammage while maintaining box strength, thus optimizing load-bearing capacity and simplifying the formation process.
Implementation Method 1
the top comprising at least two tongues adhesively bonded onto its upper face
Data Source
AI summary
A packaging box, cutouts, method and device for producing corrugated cardboard boxes comprising walls, a base (6) and a cover (7), the inner face of the base being provided with at least two recesses (33) and the cover comprising at least two tabs (38) adhered to the upper face thereof, directly above the recesses of complementary shape. The recesses and/or the tabs are situated fully inside the corresponding face or faces (31, 32).