Beverage Can Closure Sealing Reactive Surface
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Solution Overview
Problem
Existing container closing devices for beverage cans expose the reactive surface to external influences before opening, leading to potential contamination and reduced efficiency due to contact with liquid or dust, which affects bubble growth and nucleation.
Innovation Solution
A container closing device design featuring a pouring protrusion with a reactive surface sealed within a space above the lid bottom, using an elastic sealing device to prevent external contact until the can is opened, ensuring the reactive surface remains effective by maintaining its properties and preventing deposit buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the reactive surface is exposed to the environment before opening, then the container closing device is simple in structure, but the reactive surface becomes contaminated and its efficiency is reduced
Solution Approach 1:
The reactive surface is nested within a sealed space formed by the pouring protrusion and lid bottom, creating a protected inner environment that isolates the reactive surface from external contaminants while maintaining structural simplicity
Solution Approach 2:
The sealed space created by the pouring protrusion and lid bottom acts as an inert environment that prevents contact between the reactive surface and external contaminants (dust, liquid, moisture), thereby maintaining the reactive surface's efficiency until the can is opened
2Reliability
If the reactive surface is sealed within a protected space, then the reactive surface efficiency is maintained, but the device complexity increases
Solution Approach 1:
The pouring protrusion serves multiple functions: it creates the sealed space to protect the reactive surface, provides the structural framework for the opening mechanism, and forms the pouring opening itself, thereby reducing overall device complexity while maintaining reactive surface efficiency
Solution Approach 2:
The sealing function and the pouring protrusion structure are merged into a single integrated component, where the pouring protrusion itself forms the sealed space without requiring separate sealing elements, thus maintaining simplicity while protecting the reactive surface
3Object-affected harmful factors
If a sealing device is added to protect the reactive surface, then contamination is prevented, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The pouring protrusion structure itself provides the sealing function through its own geometry and its interaction with the lid bottom, eliminating the need for separate sealing components and simplifying manufacturing while effectively preventing contamination of the reactive surface
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 reactive surface is protected from external influences until the can is opened, ensuring efficient bubble nucleation and growth upon contact with the liquid, while the sealing device maintains its effectiveness under mechanical loads and deformations.
Implementation Method 1
an elastic sealing device is provided for sealing the sealed space between the pouring protrusion and the lid bottom so that any unevenness in the lid bottom which can occur when a beverage can is stored or handled can be compensated by the sealing device
Implementation Method 2
the reactive surface is designed as a surface which encourages bubble growth and nucleation upon contact with a liquid which contains oversaturated nitrogen or a gas mixture having dissolved nitrogen
Implementation Method 3
a reactive surface on its underside facing toward the lid bottom for contact with a liquid flowing from the pouring opening
Data Source
AI summary
A container closing device for a beverage can having an opening tab which is disposed on a can lid and pivotable about a pivot reception formed in a lid bottom, the opening tab being provided with a reactive surface on its underside facing the lid bottom for contact with a liquid pouring from the pouring opening, a sealed space being realized in the area of the reactive surface and a closing piece disposed in the lid bottom between a pouring protrusion and the lid bottom so that the reactive surface is disposed at least partially in the sealed space and is sealed against the environment.