Resealable Beverage Can Lid Dual Sealing Mechanism
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Solution Overview
Problem
Resealable beverage cans face contamination issues due to residual contents at the pouring opening, leading to mold and bacterial growth when reclosed and stored for a longer period.
Innovation Solution
A lid design featuring a second sealing means that seals the outlet opening against the environment, combined with a first sealing means on the closure element to prevent content leakage, and a pressure equalization opening sealed by the second sealing means to prevent contamination, with a robust sealing lip and bead configuration to maintain sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closure element with first sealing means is used to seal the outlet opening against the underside of the lid, then content leakage is prevented, but germ ingress from the environment during transport and storage cannot be prevented
Solution Approach 1:
The sealing system is segmented into two distinct sealing means: a first sealing means (closure element) that seals the outlet opening against the underside of the lid to prevent content leakage, and a second sealing means (actuating element) that seals the outlet opening against the top side of the lid to prevent germ ingress. This segmentation allows each sealing means to address specific contamination risks independently.
Solution Approach 2:
The actuating element serves as an intermediary sealing component that bridges the gap between the external environment and the beverage contents. By positioning the second sealing means on the actuating element, it acts as a mediator that prevents germ ingress during transport and storage while still allowing controlled access when activated.
2Strength
If the sealing element is made robust with single sealing bead in the first area, then damage during opening/closing movements is avoided, but sealing precision may be reduced
Solution Approach 1:
The sealing element exhibits local quality by having different structural characteristics in different areas: in the first area (outlet opening region), it has a robust single sealing bead configuration to withstand mechanical stress during opening/closing movements, while in other areas it maintains precise sealing characteristics. This localized differentiation optimizes both durability and sealing precision where needed.
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 effectively prevents germ ingress and maintains a secure seal, reducing contamination risks during bottling, transport, and storage, while ensuring easy opening and reclosing of the container.
Implementation Method 1
the first sealant, which is arranged on the inside of the closure element, prevents the beverage contents from escaping via the outlet opening
Implementation Method 2
the second sealant seals the outlet opening against the environment and thus prevents the ingress of germs
Implementation Method 3
This second opening penetrating the lid is a pressure equalization opening, which first uncovered when the actuating element is actuated to open the container, in order to release the excess pressure that usually prevails in the beverage can when it is filled with a carbonated beverage
Data Source
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AI summary
The invention relates to a lid (100) of a container, in particular of a drinks can, having at least one outlet opening (103), which penetrates the lid (100) and can be reclosed via at least one closure element (120), wherein the at least one closure element (120) is arranged on the underside of the lid (100), and the at least one closure element (120) can be moved, via an actuating element (110) arranged on the upper side of the lid (100), out of a closed position, in which the at least one outlet opening (103) is closed, into an open position, in which the outlet opening (103) is at least partially freed, the at least one closure element (120) has a first sealing means (121), for sealing the at least one outlet opening (103) in relation to the underside of the lid (100), and the actuating element (110) has at least one second sealing means (130), which seals the at least one outlet opening (103) in relation to the upper side of the lid (100).