Container Lid Sealing Foil Direct Fixation Carrier Disk Elimination
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Solution Overview
Problem
Existing container sealing techniques require a carrier disk for the sealing foil, which increases production costs, storage, and recycling efforts, as well as complicates handling during production and consumption, due to the additional component and laborious separation process.
Innovation Solution
A lid with a sealing foil fixed directly to it, where the connection between the foil and the lid is weaker than the sealing connection between the foil and the container opening, eliminating the need for a carrier disk and allowing for a similar consumer experience of breaking the seal upon first opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a carrier disk is used to hold the sealing foil in the lid, then the sealing foil can be easily handled during production and filling processes, but the device complexity increases due to the additional component and laborious separation process required during recycling
Solution Approach 1:
The invention extracts and removes the carrier disk from the sealing system, fixing the sealing foil directly to the lid instead. This eliminates the additional component while maintaining the sealing function, thereby reducing device complexity and recycling efforts without compromising ease of manufacture
Solution Approach 2:
The sealing foil is merged directly with the lid structure through fixation methods such as adhesive bonding, ultrasonic welding, or heat sealing. This combination eliminates the need for a separate carrier disk while maintaining handling ease during production, thus reducing device complexity without sacrificing manufacturing ease
2Reliability
If a carrier disk is used for the sealing foil, then the sealing foil is secured against falling off during production, but production costs and storage requirements increase due to the additional component
Solution Approach 1:
The carrier disk is extracted from the system and replaced by direct fixation of the sealing foil to the lid. This reduces the quantity of components while maintaining reliability through alternative fixation methods that secure the sealing foil during production and filling processes
Solution Approach 2:
The sealing foil is merged with the lid structure through direct fixation methods. This eliminates the need for a separate carrier disk component, reducing production costs and storage requirements while maintaining the reliability needed to prevent the sealing foil from falling off during production
3Reliability
If the sealing foil is fixed strongly to the lid, then the sealing connection is maintained, but the consumer experience of breaking the seal upon first opening is lost
Solution Approach 1:
The fixation connection between the sealing foil and lid is designed with local quality differences: the sealing edge is strongly fixed to maintain integrity, while the peripheral fixation is intentionally made weaker to allow easy separation upon first opening. This creates different functional zones with different bonding strengths to satisfy both reliability and ease of operation requirements
Solution Approach 2:
The sealing foil is pre-fixed to the lid in a controlled manner during manufacturing, with the fixation strength predetermined to allow easy separation. This preliminary action ensures that upon first opening, the consumer can easily separate the sealing foil from the lid while the sealing connection remains intact during storage and transport
Data Source
AI summary
A lid (16) for closing an opening (12) of a container (10) comprises a sealing foil (26) which is sealable to a fringe (14) of the container opening (12) and the sealing foil (26) is formed tearable and/or is attachable tearable to the fringe (14) of the container opening (12). Therefore, the sealing foil (26) is fixed directly at the lid (16) and the fixing connection (28) is formed between the sealing foil (26) and the lid (16) more weakly than the intended sealing connection (34) between the sealing foil (26) and the fringe (14) of the container opening (12).