Exterior Olive Container Closure Sealing Film Puncture
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Solution Overview
Problem
Existing container closure systems face issues when sealing a container with a film after filling, as the olive on the screw-on cap can puncture the film, requiring complex solutions like tamper-evident rings to prevent this, complicating manufacturing and handling.
Innovation Solution
A container closure system with an olive molded on the screw-on cap to fit against the exterior annular edge of the container, providing a smooth, seam-free surface for sealing, and an optional dispensing aid to prevent content from falling out, using a specialized blow mold process for manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the olive is positioned on the screw-on cap to seal the container opening, then sealing effectiveness is improved, but the olive punctures the sealing film applied to the container opening
Solution Approach 1:
The olive is inverted from its conventional interior position to an exterior position on the screw-on cap. This inversion allows the olive to seal against the exterior annular edge area of the container opening, maintaining sealing effectiveness while preventing puncture of the interior sealing film that is applied to the container opening after filling.
2Object-affected harmful factors
If a tamper-evident ring is added to limit screw-on cap engagement, then film puncture is prevented, but device complexity and manufacturing complexity increase
Solution Approach 1:
The tamper-evident ring component is extracted and eliminated from the closure system. Instead of using a separate limiting ring to prevent over-screwing and film puncture, the olive itself is positioned on the exterior of the screw-on cap to perform the sealing function, naturally limiting engagement without requiring additional protective components.
3Productivity
If the container is manufactured with extrusion blow molding, then manufacturing efficiency is improved, but seam marks appear on the exterior annular edge area
Solution Approach 1:
The sealing requirement is localized to a specific area on the container opening. By positioning the olive to seal against the exterior annular edge area, the invention creates a local quality requirement where only a small portion of the container surface needs to be smooth and seam-free, rather than the entire exterior surface. This allows the use of efficient extrusion blow molding while meeting sealing requirements.
4Reliability
If an interior olive is used to seal the container, then sealing is achieved, but the olive cannot accommodate exterior sealing film application
Solution Approach 1:
The sealing interface is moved from the interior dimension to the exterior dimension of the container opening. By positioning the olive on the exterior of the screw-on cap to seal against the exterior annular edge area, the invention creates spatial separation between the sealing function and the sealing film application area, allowing both to coexist without interference.
Data Source
AI summary
The container system having a container and a screw-on cap that may that may be screwed onto the container and having an olive that is molded onto the screw-on cap and that is positioned against an annular edge area of the container opening is characterized in that the olive is molded onto the screw-on cap such that it fits against the exterior annular edge area of the container in a sealing manner, and in that the outer annular edge area has a continuously smooth surfaces.