Tamper-Evident Slide and Shell Container with Detachable Weakness Lines
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Solution Overview
Problem
Existing slide and shell containers for consumer goods lack structural strength, particularly in the open position, and do not provide an effective tamper-evident seal, making them prone to unauthorized access and compromising the freshness of the contents.
Innovation Solution
A slide and shell container design featuring an outer shell and inner slide detachably connected along lines of weakness, which, when broken, allows the inner slide to move from a closed to an open position, providing a tamper-evident seal and enhanced structural integrity by using a single laminar blank with integral opening strips and retention means to prevent excessive movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer shell and inner slide are detachably connected along lines of weakness to provide tamper evident seal, then the container provides clear indication of tampering, but the structural strength of the outer shell is limited particularly in the open position
Solution Approach 1:
The container is divided into separate components (outer shell and inner slide) connected by detachable lines of weakness, allowing the tamper-evident seal function while maintaining individual structural integrity of each component. The outer shell remains as a complete structured container rather than a simple sleeve.
Solution Approach 2:
The inner slide is nested within the outer shell, with both components forming a complete container structure. This nesting arrangement allows the inner slide to be held securely by the outer shell in closed position while maintaining the outer shell's structural strength.
2Ease of operation
If the inner slide is slidable within the outer shell to allow consumer goods removal, then the container is easy to use, but the container lacks effective tamper-evident seal making it prone to unauthorized access
Solution Approach 1:
The lines of weakness are pre-formed in the outer shell and inner slide, creating a tamper-evident seal that must be broken before the inner slide can be removed. This preliminary structural feature ensures tamper evidence is established before use.
Solution Approach 2:
The container transitions from a sealed state (lines of weakness intact) to an open state (lines of weakness broken), allowing the inner slide to move from closed to open position. This dynamic change provides both tamper evidence and ease of operation.
3Ease of manufacture
If the outer shell is designed as a simple sleeve without top or bottom to allow assembly from blank, then the manufacturing is simple, but the structural strength is limited
Solution Approach 1:
The outer shell is formed with distinct structural components including top wall, bottom wall, and side walls from the blank, rather than being a simple sleeve. This segmentation allows conventional manufacturing while achieving full structural strength.
Solution Approach 2:
The outer shell structure is modified by forming complete top and bottom walls with appropriate geometric parameters during blank formation, transforming it from a weak sleeve structure to a strong container structure while maintaining manufacturability.
Data Source
AI summary
A slide and shell container includes an outer shell and an inner slide mounted within the outer shell. The outer shell and the inner slide are detachably connected to each other along one or more lines of weakness. Upon separation of the outer shell and inner slide along the one or more lines of weakness, the inner slide becomes moveable within the outer shell between a closed slide position and an open slide position. The two or more lines of weakness define an integral opening strip which is separable from the container in order to separate the outer shell and the inner slide.