Container Closure Tamper-Evident Seal Actuation Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing container closures require the container neck to be pre-closed with a sealing film before the closure can be applied, making it difficult to seal the container after filling and necessitating axial or radial movement of the closure to pierce the film, which complicates operation and hygiene.
Innovation Solution
The guarantee band is positioned between the lower closure part and the cap, allowing the cap to move relative to the lower part via a web connection, enabling axial or pivoting movement to actuate the piercing means only after the tamper-proof strip is removed, ensuring the sealing film is pierced securely and hygienically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container neck is pre-closed with a sealing film before applying the closure, then the medium can be sealed off from external influences, but it becomes difficult to seal the container after filling and requires complex axial or radial movement of the closure to pierce the film
Solution Approach 1:
The piercing means is pre-positioned on the closure body, ready to pierce the sealing film as soon as the closure is applied to the container neck. This eliminates the need for complex subsequent movements to pierce the film, while maintaining reliable sealing through the guarantee strip mechanism.
Solution Approach 2:
The guarantee strip acts as an intermediary element between the closure and cap, controlling the movement sequence. It allows the closure to be applied and sealed first, then enables controlled piercing through the cap's relative movement after the guarantee strip is removed.
2Reliability
If the closure requires axial or radial movement to pierce the sealing film, then the film can be pierced after application, but the operation becomes more complex and time-consuming
Solution Approach 1:
The piercing function is prepared in advance by positioning the piercing means on the closure body during manufacturing. When the closure is applied to the container, the piercing action occurs automatically or with minimal movement, eliminating time-consuming manual piercing operations while maintaining sealing integrity through the guarantee strip.
Solution Approach 2:
The sealing and piercing functions are merged into a single operational sequence. The closure both seals the container and contains the means to pierce the seal, allowing both functions to be achieved in one application process rather than separate steps.
3Device complexity
If the cap is fixed to the lower closure part, then the structure is simpler, but the cap cannot be removed or moved to access the mouthpiece
Solution Approach 1:
The connection between cap and lower closure part is made dynamic through the guarantee strip and web mechanism. The cap is initially held in a fixed position by the guarantee strip for sealing, then becomes movable after the guarantee strip is removed, allowing cap removal or pivoting to access the mouthpiece while maintaining structural simplicity through the web connection.
Solution Approach 2:
The cap assembly is segmented into movable and fixed components. The cap can be separated from the lower closure part through the guarantee strip removal mechanism, while the web provides a flexible connection that allows both fixed and movable states, combining structural simplicity with operational flexibility.
4Reliability
If the guarantee strip is positioned to prevent cap movement, then tamper evidence is maintained, but the piercing means cannot be actuated
Solution Approach 1:
The piercing means is pre-positioned and ready to actuate, but the guarantee strip prevents premature activation. Once the guarantee strip is removed intentionally, the piercing means can be actuated through simple cap movement, maintaining tamper evidence while enabling easy piercing actuation when needed.
Solution Approach 2:
The guarantee strip serves as an intermediary control element that mediates between the tamper-evident sealing function and the piercing actuation function. It maintains tamper evidence by preventing unauthorized movement, while allowing intentional removal to enable piercing actuation through the web mechanism.
Data Source
AI summary
The invention relates to a container closure (1), comprising a closure bottom part (5), a cap (2), a mouthpiece (3), and means for penetrating a sealing film, a tamper-proof strip (6) being provided, which ensures that the sealing film cannot be penetrated by the means until the tamper-proof strip (6) has been removed, characterized in that the tamper-proof strip (6) is arranged between the closure bottom part (5) and the cap (2).