Sealing Disk With Detachable Support Layer
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Solution Overview
Problem
Existing sealing disks for containers do not allow for extended storage time after opening, as they fail to prevent oxygen and foreign particles from entering through removal openings, and are difficult to handle and process due to their thin, fragile nature.
Innovation Solution
A sealing disk design featuring a detachable support layer on the side opposite the sealing layer, which detaches easily during opening, allowing for re-sealability and the formation of defined removal openings, while a metal layer and sealing layer ensure induction sealing and prevent oxygen ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thin plastic film is used for induction sealing, then the sealing disk can be solidly introduced onto the container edge, but the film becomes difficult to handle and process due to its fragility
Solution Approach 1:
The patent applies the nesting principle by placing a thin plastic film inside a larger, more robust support structure (the support layer). The thin film provides the necessary sealing function while being protected by and integrated into the larger support structure, making the overall assembly easier to handle while maintaining the sealing integrity of the thin film component.
2Ease of operation
If removal openings are created in the sealing layer, then defined withdrawal of contents is enabled, but oxygen and foreign particles can immediately enter the container contents
Solution Approach 1:
The patent applies the dynamics principle by creating a reversible sealing system. The support layer can be dynamically positioned to cover removal openings when not in use, and can be easily moved aside when access is needed. This dynamic configuration allows the system to transition between sealed and open states, maintaining protection when closed while enabling controlled access when opened.
3Productivity
If the sealing layer is made thin for easy induction sealing, then the sealing process is efficient, but the sealing layer becomes fragile and difficult to process
Solution Approach 1:
The patent applies the composite materials principle by combining a thin plastic film (providing induction sealing capability) with a larger support structure (providing mechanical strength). This composite construction allows the thin film to perform its sealing function efficiently while the support structure provides the necessary mechanical robustness for handling and processing, resolving the contradiction between thinness for sealing efficiency and fragility for processing difficulty.
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 enables extended storage by re-sealing the container, maintaining freshness and preventing leakage, while being easier to handle and process, with reduced material costs and improved mechanical handling, allowing for efficient assembly and distribution.
Implementation Method 1
having a foil or film for inductively coupling heat into the sealing disk
Implementation Method 2
If an eddy current is induced into the aluminum foil from above, it is correspondingly heated
Data Source
AI summary
A sealing disc (10) is used for closing orifices of containers (5). It has a film (20) for inductively coupling heat into the sealing disc (10). A sealing layer (25) is provided on that side of the film (20) which is intended to face the interior of the container (5) in order to seal, in sealtight fashion, the sealing disc (10) on the orifice of the container (5). Lines of weakness (26) are provided in the sealing layer (25) so as to form a removal opening (27) once the film (20) has been drawn off. One or more layers (40), which are connected detachably to the film (20), are provided on that side of the film (20) which is remote from the sealing layer (25). The layers (40) detach mare easily from the lam (20) than the sealing layer (25) and also detach more easily from the orifice of the container (5) than the sealing layer (25). The layers (40) are formed such that said layers tightly close the removal opening (27) once the film (20) has been drawn off and the layers (40) have been placed onto the sealing layer (25) again.