Hinged-Lid Cigarette Pack Locking Panel for First-Opening Evidence
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Solution Overview
Problem
Existing rigid packs of cigarettes with hinged lids face challenges in ensuring pack integrity without plastic overwraps, stamps, or other aesthetic compromises, especially under environmental regulations and counterfeiting risks.
Innovation Solution
A rigid pack design with a locking panel that connects the lid to the container, featuring a pre-weakened tearable connection line to ensure the first opening is evident and secure, while maintaining ease of production and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic overwrap is used to ensure pack integrity, then the pack is protected against tampering and refilling, but environmental sustainability is compromised and plastic waste increases
Solution Approach 1:
The invention extracts and eliminates the plastic overwrap from the packaging system, replacing it with an alternative integrity verification mechanism that does not rely on plastic materials, thereby resolving the contradiction between pack protection and environmental sustainability
Solution Approach 2:
The invention changes the verification mechanism from visual inspection of intact plastic to detection of mechanical alteration (tear pattern analysis), allowing integrity verification without plastic overwrap and thus eliminating the harmful environmental factor
2Reliability
If a stamp is used to indicate first opening, then pack integrity is verified, but the aesthetic appearance of the pack is compromised
Solution Approach 1:
The invention removes the traditional stamp element from the packaging design, replacing it with a tear-based verification system that maintains pack aesthetics while still providing reliable integrity verification through the distinctive tear pattern
Solution Approach 2:
The invention uses the visual contrast created by the tear pattern itself (the disruption of the original design) as the verification indicator, eliminating the need for additional stamps or markings that would compromise aesthetic appearance
3Reliability
If a pre-weakened tearable connection line is implemented, then first opening detection is enabled without additional components, but the structural strength of the lid connection is reduced
Solution Approach 1:
The invention pre-positions a weakened section in the connection between lid and container that is designed to fail at a specific low force, enabling automatic detection of first opening through the distinctive tear pattern while maintaining adequate strength during normal handling through the surrounding stronger material
Solution Approach 2:
The invention segments the connection structure into a weakened portion (for tear detection) and stronger surrounding portions (for structural support), allowing the system to provide both first opening detection and adequate connection strength simultaneously
Data Source
AI summary
A pack for smoking articles having: a group of smoking articles; a wrap housing the group of smoking articles; a rigid container, which is cup-shaped, houses the wrap and has: an open upper end, a lower wall, a front wall and rear wall, and two side walls; a lid, which is cup-shaped, is hinged to the container along a hinge so as to rotate, relative to the container, between an open position and a closed position, and has: an open lower end, an upper wall, a front wall and a rear wall, and two side walls; and a locking panel, which is at least partially glued to a first side wall of the container and has an upper edge, which is connected to a lower edge of a second side wall of the lid.