Tamper-Evident Closure Label System with Perforated Thumb Tab
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tamper-indicating closure and container assemblies often require destruction of a part to indicate prior opening, which can be inconvenient and may not provide clear evidence of tampering at the point of opening.
Innovation Solution
A dispensing closure system with a lid and integrally formed living hinge, featuring a protruding thumb tab that tears the label when opened, allowing for visible evidence of prior opening without destroying the label, and optionally using perforations and adhesive patterns to facilitate tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tear band or paper seal is used around the container rim, then tamper evidence is provided through destruction of the seal, but the label is entirely destroyed and opening force requirements increase
Solution Approach 1:
The label is segmented into multiple functional zones: a tamper-evident portion that tears at the parting line, a middle portion that remains intact, and a bottom portion that stays adhered. This segmentation allows different parts of the label to serve different functions - providing tamper evidence while maintaining overall label integrity for branding and information purposes.
Solution Approach 2:
The label applies adhesive selectively rather than uniformly across its entire surface. The adhesive is concentrated at the bottom portion to ensure it remains adhered to the container, while the upper portion near the parting line has reduced or no adhesive, allowing it to tear cleanly and provide tamper evidence without destroying the entire label.
2Reliability
If a tamper indicating ring with breaking webs is used, then prior opening is indicated by separated ring portions, but the design and manufacture complexity increases and uniform low opening force is difficult to achieve
Solution Approach 1:
The tamper indication function is merged with the existing label structure rather than using a separate tamper-indicating ring. The label itself serves dual purposes: providing product information/branding and indicating tamper through controlled tearing at the parting line. This eliminates the need for separate tamper-indicating components and their complex assembly.
Solution Approach 2:
The label performs multiple functions simultaneously: it provides product identification and information, maintains closure integrity through adhesive bonding, and indicates tamper through controlled tearing. This multi-functionality eliminates the need for separate dedicated tamper-indicating components, simplifying the overall closure structure.
3Stability of the object's composition
If conventional adhesive application is used on the entire label, then the label remains fully adhered, but tamper evidence at the point of opening is not provided
Solution Approach 1:
The adhesive application pattern transitions from uniform to localized. Adhesive is concentrated at the bottom portion of the label where it needs to remain firmly adhered to the container, while the upper portion near the parting line has reduced or no adhesive, allowing it to tear cleanly and provide tamper evidence.
Solution Approach 2:
The adhesive bonding function is segmented from the tamper evidence function. The bottom portion of the label maintains strong adhesive bonding for stability, while the upper portion is designed with reduced adhesion to allow controlled tearing that provides visible tamper evidence at the parting line.
Data Source
AI summary
A dispensing closure and label system provides a clear indication of prior opening directly at the point of application of force to open the closure. The dispensing closure includes a closure body, a living hinge and a lid. The lid includes a downwardly depending sidewall that has a thumb tab that extends down beyond the parting line of the lid and the closure body. A label wraps around the skirt and container neck. The label overlaps that portion of the thumb tab that extends below the parting line of the lid and body. When the thumb tub is lifted to open the container, the paper label is ripped in the area of the thumb tab to evidence opening.