Hinge-Lid Pack Reinforcement With Lateral-Pressure Lock
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Solution Overview
Problem
Existing hinge-lid packs for consumer goods are prone to accidental opening, particularly when filled or almost filled, and there is a need for a secure closure mechanism that is easy to manufacture and cost-effective.
Innovation Solution
A hinge-lid pack design featuring a reinforcement strip on the back side extending over at least 50% of the width, combined with a releaseable locking mechanism on the front side, which requires simultaneous pressure from both lateral sides to open, enhancing security against accidental opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional hinge-lid pack design is used, then the manufacturing process is simple, but the pack is prone to accidental opening and lacks secure closure
Solution Approach 1:
The pack structure is segmented into distinct functional components: a reinforcement strip attached to the back side for structural support, and a separate locking means on the front side for secure closure. This segmentation allows each component to perform its specific function effectively while maintaining overall simplicity in the manufacturing process.
Solution Approach 2:
The reinforcement strip is pre-attached to the back side of the pack during manufacturing, creating a pre-reinforced structure that requires minimal additional modification. The locking means is also pre-configured on the front side, allowing the pack to achieve secure closure without complex assembly steps or additional processing.
2Reliability
If locking means are added to secure the pack, then accidental opening is prevented, but the manufacturing complexity increases
Solution Approach 1:
The locking means is designed as a separate, modular component on the front side of the pack, independent of the reinforcement strip on the back side. This segmentation allows the locking mechanism to be manufactured and attached using simple, conventional processes without requiring complex integration or additional manufacturing steps.
Solution Approach 2:
The locking means is designed as a simple, cost-effective component that can be easily manufactured and attached to the pack. The design prioritizes functional effectiveness over complexity, using basic mechanical elements that are inexpensive to produce and simple to assemble, maintaining cost-effectiveness while providing secure closure.
3Reliability
If the pack width is greater than height, then security against accidental opening is enhanced, but the pack dimensions are less conventional
Solution Approach 1:
The pack design incorporates local quality variations through the strategic placement of the reinforcement strip on the back side and the locking means on the front side. These localized structural enhancements provide secure closure and accidental opening prevention at specific locations, allowing the overall pack dimensions to be optimized for security (width greater than height) without requiring uniform changes throughout the entire structure.
Data Source
AI summary
A hinge-lid pack is provided, including: a body and a lid, the lid being hingedly connected to the body along a hinge line arranged on a back side of the pack; and a releaseable lock arranged on a front side of the pack to releasably lock the lid and the body, a separate reinforcement strip being attached to the back side of the pack and extending over at least 50 percent of a width of the back side. A blank of sheet material for forming the hinge-lid pack is provided.