Multi-Compartment Dispensing Cover Sheet With Arcuate Tamper-Evident Cuts
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Solution Overview
Problem
Existing tamper-evident features in multi-compartment medication packages may not function reliably due to manufacturing variations, necessitating a cover sheet design that consistently indicates tampering regardless of manufacturing inconsistencies.
Innovation Solution
A cover sheet with arcuate tamper-evident cuts directed towards the corners of closure members, secured to a base member with a laminated construction of paper and metal foil, featuring adhesive and liner patches to ensure secure sealing and visible tampering evidence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tamper-evident cuts are used in cover sheets, then tamper evidence function is provided, but manufacturing variations cause unreliable performance
Solution Approach 1:
The patent applies curvature by using arcuate (curved) tamper-evident cuts instead of straight cuts. The arcuate shape with a radius of curvature creates a geometric design that is inherently more tolerant to manufacturing variations. The curved geometry ensures that the tear propagation path is predetermined and reliable even when manufacturing dimensions vary within normal tolerances, thus resolving the contradiction between reliability and manufacturing precision.
Solution Approach 2:
The patent changes the geometric parameters of the tamper-evident cuts by specifying arcuate shapes with particular radius of curvature values and angular measurements. By optimizing these parameters (radius, arc angle, positioning), the design achieves consistent tear propagation and reliable tamper evidence functionality that is insensitive to manufacturing variations in the cover sheet production process.
2Strength
If the cover sheet is securely sealed to the base member, then sealing integrity is improved, but tamper detection becomes more difficult
Solution Approach 1:
The patent incorporates tamper-evident cuts as pre-formed features in the cover sheet before sealing to the base member. These cuts are prepared in advance during cover sheet manufacturing, positioned and oriented to ensure that any attempt to peel or separate the cover sheet will initiate a visible tear at the predetermined arcuate cut location. This preliminary preparation ensures both strong sealing and easy tamper detection without conflict.
Solution Approach 2:
The arcuate tamper-evident cuts create predetermined separation zones in the cover sheet. These segmented weak points are strategically positioned so that normal sealing forces maintain integrity while any tampering attempt concentrates stress at the curved cut locations, causing controlled tears that provide visible evidence. The segmentation allows the cover sheet to simultaneously achieve strong adhesion and easy tamper detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides consistent tamper-evidence by ensuring that any attempt to tamper with the package results in visible tears at the tamper-evident cuts, enhancing security and reliability.
Implementation Method 1
The undersurface of the cover sheet is configured to be releasably secured to the flanges of the base member
Implementation Method 2
The flanges are detachably connected along frangible separation lines intersecting the corners so that each compartment unit may be separated from the other compartment units
Implementation Method 3
Each of the tamper-evident cuts is arcuate, having an apex at a midpoint thereof. The apex of each of the tamper-evident cuts of each closure member is directed toward and located closely adjacent a respective corner of the closure member and configured to initiate tearing of the closure member upon lifting
Data Source
AI summary
A cover sheet for a multi-compartment package for dispensing plural items is disclosed. The package includes plural individual sealed compartment units which are releasably secured to each other. Each compartment unit includes a flanged base from which a chamber depends. The chamber holds an item to be dispensed and is surrounded by a flange. The cover sheet, includes respective closure members releasably secured to each other by frangible lines. Each closure member is configured to be adhesively secured to the flange of each compartment unit. Each closure member includes plural arcuate tamper-evident cuts therein located adjacent respective corners of the closure member to initiate a tear upon attempted removal of the closure member from the flange of its associated compartment unit.