Tamper-Evident Reclosable Box Pull Tab Design
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Solution Overview
Problem
Existing medical packaging with tamper-evident closures are difficult for users to open and recognize visually, as the pull tab is hard to grasp and lacks a clear indicator for opening, making it challenging to determine if the packaging has been opened.
Innovation Solution
A reclosable folding box with a pull tab printed in a contrasting color and pattern that extends beyond the tear line area, providing improved graspability and visual recognition, featuring a guilloche pattern and a thumb cavity for easy opening and reclosure, with tear lines formed as linear carving or perforation lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pull tab is integrated into the side wall surface with tear line areas, then the packaging provides tamper-evident closure functionality, but the boundary line of the pull tab becomes difficult to grasp and visually recognize
Solution Approach 1:
The pull tab is printed with a first linear pattern (guilloche pattern) that extends beyond the tear line area into the side wall surface, and a second linear pattern in color contrast that encompasses the pull tab area. These contrasting patterns create visual boundaries that make the pull tab easily recognizable and distinguishable from the surrounding packaging surface.
Solution Approach 2:
A thumb cavity is formed in the side wall surface at the location where the pull tab boundary line reaches the edge, creating a three-dimensional gripping feature. This dimensional change from a flat surface to a recessed cavity provides an ergonomic grip point that enhances the ease of grasping and pulling the tab.
2Loss of information
If the pull tab boundary line is formed at the edge of the side wall surface, then the pull tab area becomes visually recognizable, but the packaging structure becomes more complex
Solution Approach 1:
The pull tab is formed as an integrated part of the side wall surface through tear line areas (perforation lines or carving lines) rather than as a separate component. This merging of the pull tab with the existing packaging structure allows the visual indicators and thumb cavity to be incorporated without adding significant structural complexity, while still providing clear visual boundaries for the pull tab area.
Data Source
AI summary
In a reclosable folding box (41, 42, 43) having a safety and tamper-evident closure (84), the side wall surfaces (2 to 6, 64, 65) of which are formed by a one-piece blank (1, 1a, 1b) and glued together in such a way that the folding box (41, 42, 43) cannot be opened without destroying a glued joint and/or at least one disconnectable tear line area (16, 17, 16a, 16b, 17a, 17b), a solution for a reclosable medical packaging having a safety and tamper-evident closure is to be created, which provides an improved graspability and visual recognizability of a pull tab forming at least the substantial part of the safety and tamper-evident closure. This is achieved by the fact that the pull tab (18) reaches a folding box edge (39, 52) with an edge-side boundary line (85) and is printed on a folding box outer side with a first linear pattern (20), in particular a guilloche pattern, extending at least in part with at least one pattern line beyond the tear line area(s) (16, 17, 16a, 16b, 17a, 17b), which first linear pattern (20) adjoins an area (21, 22) visible from the folding box outer side and printed in contrast color with respect to the first linear pattern (20), which is formed in a way to encompass, at least to include the pull tab (18), in the area of an edge-side limiting edge (86) of the pull tab (18) on the outer side on a first side wall surface (2), or which is formed in the area of the boundary line (85) at least on a surface area of a second side wall surface (3) facing the folding box outer side and covered by the pull tab (18), as well on the outer side of a third side wall surface (4) hinged to the second side wall surface (3) and adjoining the pull tab (18), in a way to graduate into the same.