Child Resistant Unit Dose Packaging with Focused Push Button
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Solution Overview
Problem
Traditional child resistant unit dose packaging systems may not meet stringent child proofing standards as they can be inadvertently opened by pressing near the release button, rather than directly on it, and lack durability in handling.
Innovation Solution
A unit dose paperboard package design featuring an outer sleeve with a longitudinally extending tab and a card retaining aperture that requires direct pressing of a button to release the inner slide card, incorporating a catch edge mechanism to prevent removal without button depression, and a hinged attachment for enhanced interlocking, ensuring focused button press and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the release button area is made larger or less precisely defined, then ease of operation is improved, but child resistance deteriorates as children can press near the button to open the package
Solution Approach 1:
The patent applies local quality by creating a tab with a specifically defined pressing area that is localized and distinct from surrounding areas. The tab's moveable edge is precisely positioned within the retaining aperture, creating a focused interaction zone that maintains both ease of operation for adults and resistance to inadvertent activation by children.
Solution Approach 2:
The release mechanism is segmented into distinct components: the tab, the moveable edge, the retaining aperture, and the catch edge. This segmentation allows each element to have a specific function - the tab provides the pressing interface, the moveable edge translates pressure, the aperture guides the tab, and the catch edge provides the locking mechanism, collectively resolving the contradiction between ease of use and child resistance.
2Reliability
If the package structure is made more complex with additional retaining mechanisms, then child resistance is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into a unified tab structure. The tab combines the release activation function, the positioning function (through its moveable edge), and the interaction with the catch edge mechanism. This merging reduces overall device complexity while maintaining effective child resistance through the integrated catch edge and retaining aperture system.
Solution Approach 2:
The tab structure is designed to be self-guiding within the retaining aperture, with the moveable edge automatically positioning itself during the pressing action. The catch edge mechanism engages and disengages automatically based on tab movement, reducing the need for additional complex control mechanisms while maintaining reliable child resistance.
3Ease of operation
If the card retaining aperture extends further along the tab, then ease of operation is improved, but durability deteriorates as the tab structure becomes more vulnerable to tearing
Solution Approach 1:
The retaining aperture extends partially along the tab's length, specifically to less than one-half of the tab length from the moveable edge. This partial extension provides sufficient guidance and support for the tab during operation while maintaining adequate structural integrity and resistance to tearing in the remaining tab portion.
Data Source
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AI summary
A unit dose paperboard package includes an outer paperboard sleeve and an inner paperboard slide card lockably retained within the outer sleeve. The outer sleeve includes a plurality of panels operatively connected to each other such that a top panel of the plurality of panels includes an inner slide card retaining aperture and an inner slide card releasing button defined thereon. The inner slide card includes an inner slide card retaining and releasing panel. The slide card release button includes a longitudinally extending tab defined by a cut in the sleeve, with a root of the tab between ends of the cut, and with a moveable tab edge opposite the root of the tab. The card retaining aperture extends longitudinally past the moveable tab edge in a first direction, but does not extend longitudinally past the root of the tab in a second direction opposite the first direction.