Carton Bottom Flap Legs for Bag-in-Box Dispensing
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Solution Overview
Problem
Existing bag-in-box packaging designs face challenges in positioning a glass under the tap due to the tap's location at the lower part of the packaging, requiring separate stands that are cumbersome and not always available, or nested carton solutions that limit design and usability.
Innovation Solution
A new bottom flap construction in the carton forms foldable legs that interlock to elevate the carton, allowing it to be positioned independently without additional materials or stands, enabling easy assembly and disassembly without affecting the tap's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate stand is used to elevate the carton, then the glass can be positioned under the tap, but the stand occupies the entire table surface and is cumbersome to transport and store
Solution Approach 1:
The stand is merged with the carton by forming it from the carton's own bottom flaps. The first pair of opposing flaps are foldable into an open position to form legs, and interlock with the second pair of opposing flaps to create an integrated stand structure that elevates the carton without requiring separate components.
Solution Approach 2:
The bottom flaps are segmented into functional parts: the first pair of opposing flaps form the legs, while the second pair of opposing flaps provide interlocking support. This segmentation allows the stand to be compact when folded and only occupy minimal table space when deployed.
2Ease of operation
If nested carton boxes are used to create a stand, then the carton can be elevated, but the design is limited and requires cooperation between inner and outer carton boxes
Solution Approach 1:
The bottom flaps serve multiple functions: they can be folded into an open position to form legs for elevation, interlocked with the second pair of flaps for structural support, and can be folded back into a closed position for compact storage. This multi-functionality eliminates the need for separate nested carton boxes while maintaining design flexibility.
3Ease of operation
If the bottom flaps are folded into an open position to form legs, then the carton is elevated for easy glass positioning, but the flaps need lateral rigidity to maintain stable position
Solution Approach 1:
The flaps are pre-configured with interlocking features that engage when the first pair of opposing flaps are folded into the open position. The second pair of opposing flaps are positioned to provide lateral support before the legs are fully deployed, ensuring stability is built into the structure from the beginning of the assembly process.
Data Source
AI summary
The present invention provides a carton for a bag in box packaging. The carton has the overall configuration of a rectangular parallelepiped, with two pairs of opposing sidewalls and an upper end portion and a lower end portion, together defining a cavity for receiving a liquid holding bag. In the lower end portion there are a first pair of opposing flaps and a second pair of opposing flaps. The carton further has an opening extending through one sidewall in the lower end portion for dispensing liquid from a bag positioned inside the cavity. According to the invention the first pair of opposing flaps are foldable into an open position, in which the flaps extend outwards from the cavity to form a pair of legs. The legs are interlockable with a flap of said second pair of flaps so as firmly to fix the position of the legs with regard to the carton. The leg-forming flaps support the carton in an elevated position with respect to a surface thus facilitating dispension of liquid through the opening.


