Child-Resistant Cap Assembly With Tamper-Evident Breakaway Disc
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Solution Overview
Problem
Existing tamper-evident and child-safety packaging solutions are either limited to tampering prevention or child safety, neglecting the other aspect, and require expensive equipment, making them unsuitable for small businesses or institutions like pharmacies and hospitals.
Innovation Solution
A tamper-evident and child-resistant container design featuring a cap assembly with a tamper-evident disc and a press-tab mechanism that ensures visual indication of tampering and child-proof access, compatible with standard fasteners, allowing easy manufacturing and cost-effective use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing tamper-evident packaging solutions (shrink bands, over wraps, lidding films) are used, then tampering prevention is improved, but child safety protection is neglected
Solution Approach 1:
The patent combines tamper-evident and child-safety features into a single integrated cap assembly. The frangible joint mechanism serves dual purposes: it provides tamper evidence when broken and simultaneously functions as part of the child-safety opening mechanism requiring coordinated push-and-turn action.
Solution Approach 2:
The cap assembly is designed to perform multiple functions simultaneously: tamper evidence detection, child-safety protection, and normal opening operation. The frangible joint and push-tab mechanism work together to achieve both tamper-evident and child-resistant capabilities in one device.
2Object-affected harmful factors
If existing child-safety caps requiring hard pressing and simultaneous rotation are used, then child safety is improved, but ease of operation for older people and patients is worsened
Solution Approach 1:
The cap assembly incorporates a push-tab that dynamically changes the opening mechanism. Instead of requiring hard pressing and simultaneous rotation, the push-tab can be pressed to release the cap, providing a more accessible opening method for those with limited hand strength or dexterity.
3Reliability
If specialized closing equipment is used for tamper-resistant packaging, then tamper evidence is improved, but device complexity and manufacturing cost are worsened
Solution Approach 1:
The frangible joint mechanism is designed to be self-activating during normal cap opening. The breaking of the frangible joint occurs automatically when the cap is opened, providing tamper evidence without requiring any specialized equipment or additional steps beyond normal opening operation.
4Reliability
If plastic shrink-bands or labels are used for tamper evidence, then tamper evidence is improved, but child safety factor is neglected
Solution Approach 1:
The patent integrates the tamper-evident frangible joint mechanism with the child-safety cap structure. The same components that provide tamper evidence (the frangible joint and precut channel) are incorporated into the child-safety opening mechanism, eliminating the need for separate shrink-bands or labels.
Data Source
AI summary
This invention is method of manufacturing of child-resistant and tamper-evident packaging container, which the cap having a tamper-evident feature on the top and a press-tab on the side wall. This cap provides both tamper-evident and child safety features to warn and protect consumers as well as dispensers such as: pharmacists, hospitals, medical centers, and manufacturers that the containers have not been opened and accurately reflect the number of pills in the container. The cap's distinctive feature enables the pharmacist and medical staff or provider to securely fasten by rotating it clockwise, while the patient turns the cap counterclockwise to open it for the first time. However, this process will break off the tamper-evident feature away from the outside cap, which indicates tampering and exposes the upper surface of the inner lid, where additional marking displays, i.e., “OPENED” to warn of tampering. The cap continues function a child-resistant container thereon.