Inner Packet Reinforcement for Smoking Article Packaging
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Solution Overview
Problem
Cigarette packaging with slide or swing opening mechanisms suffers from reduced rigidity of the inner packet part, leading to potential damage and crushing when grasped by users, especially after removing some cigarettes, which affects the structural integrity and user experience.
Innovation Solution
Incorporating reinforcement means, such as a reinforcement plate, to strengthen the front and back walls and corners of the inner packet part, enhancing resistance to compression forces and improving the structural integrity of the packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner packet part is made movable relative to the outer packet part through a side opening (slide or swing mechanism), then ease of operation is improved, but rigidity of the inner packet part deteriorates
Solution Approach 1:
The patent applies reinforcement means specifically at critical locations (corners and edges) of the inner packet part rather than reinforcing the entire structure uniformly. This localized reinforcement maintains the movable design while providing targeted structural support where compression forces are most likely to cause damage during operation.
Solution Approach 2:
The patent combines the inner packet part material with reinforcement means (such as rigid plates or additional structural elements) to create a composite structure. This composite construction provides the necessary rigidity to prevent crushing while preserving the slide or swing opening mechanism's ease of operation.
2Ease of operation
If the inner packet part is extracted partially from the outer packet part during use, then ease of operation is improved, but structural integrity deteriorates
Solution Approach 1:
The reinforcement means are positioned at specific critical areas (corners and edges) of the inner packet part that are most susceptible to damage during partial extraction. This localized approach maintains structural integrity at vulnerable points while allowing the rest of the packet to remain movable and accessible.
Solution Approach 2:
The reinforcement means are pre-installed on the inner packet part before it is placed in the outer packet part. This preliminary reinforcement ensures that the structural integrity is maintained from the beginning, preventing damage during the extraction process before the user even begins removing cigarettes.
3Ease of manufacture
If rounded or bevelled corners are provided on the inner packet part, then ease of manufacture is improved, but rigidity deteriorates
Solution Approach 1:
The patent maintains the ease of manufacture by keeping rounded or bevelled corners on the inner packet part, but compensates for the reduced rigidity by applying reinforcement means specifically at these corner areas. This localized reinforcement restores the structural strength at the most vulnerable points without requiring changes to the overall corner design or manufacturing process.
Data Source
Figure 1A
Figure 1B
Figure 2~3
AI summary
Packaging (1) for smoking articles. The packaging comprises an outer packet (2) comprising a front wall (21) and a back wall (22) connected by at least a top wall (23), a bottom wall (24) and a side wall (25) to form a sleeve with at least one side-opening (26) opposite the side wall (25). An inner packet part (3) comprises a front wall (31) and a back wall (32) connected to each other by at least a bottom wall (33) and two opposite substantially parallel side walls (34, 35) to define an enclosure for housing a bundle of smoking articles (B), said enclosure having at least one top opening between said front, back and side walls, the inner packet part (3) being housed within the outer packet part (2) and being movable relative to the outer packet part through the at least one side-opening between a closed position, in which the inner packet part (3) is fully inserted in the outer packet part (2), and an open position, in which the inner packet part (3) is at least partly extracted from the outer packet part (2). The inner packet part (3) further comprises reinforcement means (4) configured to increase resistance of at least one of its front and back walls (31, 32) to compression forces (Fc) having at least one component exerted perpendicularly towards said front and/or back walls (31, 32).