Hinged Dispensing Closure With Tamper-Evident Leak Control
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Solution Overview
Problem
Existing systems for liquid containers fail to provide a clean and controlled opening and pouring experience while maintaining product containment, and lack features for tamper evidence and secure attachment to the container.
Innovation Solution
A hinged over-cap system with a spud member and a fitment that includes non-threaded lugs or ridges for secure attachment, providing a seal and tamper evidence, and a cap with angled tabs for controlled pouring and fluid retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional cap system is used, then the container can be sealed, but the opening and pouring experience is not clean and controlled
Solution Approach 1:
The cap assembly is divided into separate functional components: a body portion for containment, a hinged over-cap for controlled opening, and a spud member for sealing. This segmentation allows each component to perform its specific function optimally, providing both clean pouring and reliable containment.
Solution Approach 2:
The over-cap is connected via a hinge, transforming it from a static seal to a dynamic component that can rotate between closed and open positions. This enables controlled access to the container opening while maintaining sealing when closed, improving both operation ease and containment reliability.
2Reliability
If traditional sealing mechanisms are used, then product containment is maintained, but tamper evidence is not provided
Solution Approach 1:
The seal indicator is designed to change appearance (visual state) when tampered with. The indicator mechanism provides visible evidence of whether the seal has been compromised, allowing users to detect tampering while maintaining secure containment when intact.
3Reliability
If secure attachment to container is implemented, then product containment is improved, but ease of removal is reduced
Solution Approach 1:
The attachment system is segmented into detachable components with specific engagement features. The cap body, over-cap, and spud member can be securely attached during normal use but removed when needed, balancing containment security with ease of removal through modular design.
Solution Approach 2:
The hinged connection allows the over-cap to be dynamically attached and detached from the cap body. This dynamic attachment mechanism provides secure containment during use while enabling easy removal when access is required, resolving the contradiction between security and ease of operation.
4Ease of manufacture
If a simple cap design is used, then manufacturing is easier, but controlled pouring and fluid retention are not achieved
Solution Approach 1:
The cap is segmented into functional portions: a body portion for basic containment, a hinged over-cap for controlled opening, and a spud member for sealing. Each segment is relatively simple in design but combines to provide controlled pouring and fluid retention capabilities.
Solution Approach 2:
The spud member is pre-positioned to extend into the container opening before use, creating a seal that prevents fluid leakage during transport and storage. This preliminary sealing action ensures controlled pouring when the over-cap is opened without requiring complex mechanisms.
Data Source
AI summary
A dispensing closure system is provided for a container for housing and dispensing contents. The system includes a closure having a closure body for extending from the container at the container opening and a cap or lid hingedly attached to the closure body. The closure body has a dispensing spout, and the lid includes a projection or spud member. A fitment member is further provided and is operable to communicate with the container and the closure.