Metallic-Composite Closure for Tamper-Evident Paint Containers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paint container closure systems either rely solely on metallic components, lacking tamper evidence, or incorporate plastic components without the durability and compatibility with existing manufacturing processes.
Innovation Solution
A closure system comprising a metallic crimp ring, a primary lid with a tamper-evident feature, and a secondary lid, all with contoured surfaces for secure coupling, allowing for durable, reusable, and tamper-evident sealing with compatibility to existing containers and manufacturing lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metallic components are used for closure systems, then durability and compatibility with existing manufacturing processes are improved, but tamper evidence capability deteriorates
Solution Approach 1:
The closure system combines metallic components (crimp ring, primary lid) with plastic components (secondary lid, tamper-evident features) to achieve both durability from metal and tamper evidence from plastic. The composite structure allows each material to contribute its advantageous properties in the overall system.
Solution Approach 2:
The closure system is divided into separate functional components: a metallic crimp ring for attachment, a primary lid for initial sealing, and a secondary plastic lid for tamper evidence and resealing. This segmentation allows each component to be optimized for its specific function while working together as an integrated system.
2Object-affected harmful factors
If plastic components are used for closure systems, then tamper evidence capability is improved, but durability and compatibility with existing manufacturing processes deteriorates
Solution Approach 1:
The system uses composite materials where plastic components provide tamper evidence functionality while metallic components provide structural durability. The plastic secondary lid and tamper-evident features are combined with the durable metallic crimp ring and primary lid to balance both requirements.
Solution Approach 2:
Different parts of the closure system have different material qualities tailored to their specific functions. The metallic portions are localized where structural strength and durability are needed (crimp ring, primary lid), while plastic portions are localized where tamper evidence and flexibility are needed (secondary lid, tamper-evident features).
3Device complexity
If a single lid design is used, then device complexity is reduced, but functionality (tamper evidence and resealing) deteriorates
Solution Approach 1:
The closure is segmented into multiple functional lids: a primary lid for initial sealing and a secondary lid for tamper evidence and resealing operations. This segmentation enables the system to perform multiple functions that a single lid design could not achieve.
Solution Approach 2:
The closure system is designed with multi-functionality where the primary lid handles initial sealing, the tamper-evident features provide security verification, and the secondary lid enables resealing. This universal design allows one closure system to fulfill multiple operational requirements.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A closure system can be attached to existing paint pails, cans, and other, similar metallic containers. It includes a crimped insert ring (10) attaching to the container and a primary lid (20) having a tamper-evident panel (24). A secondary lid (30) is seated on and seals to the primary lid, with the secondary lid possibly being made partially or completely from plastics, thereby facilitating its ability to reseal the paint container by way of a plug seal. The insert, primary lid, and secondary lid comprise means to facilitate their attachment to one another, in the form of annular grooves (12, 22, 32) and ridges (25).