Prismatic Pack Dust Flap for Load Stability
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Solution Overview
Problem
Prismatic packaging designs face instability and damage when subjected to pressure loads, particularly in corner areas, due to the need for multiple dust flaps for sealing, which compromises closure security and load stability.
Innovation Solution
The packaging features a dust flap that rests on and protrudes beyond the side walls, providing secure closure and increased load stability, with optional latching lugs and recesses for enhanced dimensional stability, allowing for thinner cardboard usage and cost savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dust flaps are used for sealing the lid and base construction, then closure security is improved, but load stability deteriorates due to instability in corner areas under pressure loads
Solution Approach 1:
The patent merges the sealing function and the load-bearing function into a single integrated dust flap structure. The dust flap is designed to extend beyond the side walls and rest on adjacent structures, allowing it to simultaneously provide closure security and enhance load stability in corner areas under pressure loads.
Solution Approach 2:
The dust flap is extended into an additional spatial dimension by making it protrude beyond the side walls. This dimensional extension allows the dust flap to not only seal the corner areas but also to rest on and support adjacent structures, thereby providing both closure security and load stability.
2Reliability
If multiple dust flaps are used for sealing, then closure security is improved, but packaging complexity increases
Solution Approach 1:
The dust flap is designed as a multi-functional element that simultaneously performs sealing, structural support, and load-bearing functions. This universal design eliminates the need for separate components for each function, thereby reducing packaging complexity while maintaining closure security.
Solution Approach 2:
The patent combines multiple functions (sealing, support, load-bearing) into a single dust flap structure, reducing the number of separate components needed and simplifying the overall packaging design while ensuring secure closure.
3Strength
If thicker cardboard is used to improve load stability, then strength is improved, but material cost increases
Solution Approach 1:
The patent utilizes thin cardboard material in combination with a strategically designed dust flap structure to achieve load stability. The dust flap's geometric configuration and positioning provide structural reinforcement, allowing the use of thinner, more cost-effective cardboard while maintaining strength and load-bearing capacity.
Solution Approach 2:
Instead of changing the material parameter (cardboard thickness), the patent changes the structural parameter (dust flap geometry and positioning) to achieve load stability. This allows the use of thinner cardboard, reducing material cost while maintaining the required strength through optimized structural design.
Data Source
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AI summary
The present invention describes a pack made of cardboard, paper or the like, comprising a front wall (12) and a rear wall (14), also comprising at least in each case two side walls (22, 22', 22'', 24, 24', 24'') which connect the front and rear walls (12, 14) and are intended for forming end sides (16, 18) of the pack (10), wherein the pack (10) is in the form of a prismatic body along a longitudinal axis (L), further comprising a base structure (20), having at least one base flap (26, 28) which is articulated on the front or rear wall (12, 14) and is intended for closing the pack (10) at the base, and additionally comprising a lid structure (30), having at least one lid flap (32, 34) which is articulated on the front or rear wall (12, 14) and is intended for closing the pack (10) at the lid, wherein the base structure (20) and/or the lid structure (30) comprise/comprises at least one dust flap (36) which is articulated at a base end and/or lid end of at least one end-side wall (22, 24). According to the invention, the dust flap (36) is designed such that, in a closed position, it rests, at least in part, on the side wall or side walls (22', 22'', 24', 24''), on which it is not articulated. The invention also relates to a blank for producing such a pack.