Decorative Hood and Closure Cap for Tamper-Proof Bottles
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Solution Overview
Problem
Existing tamper-proof closure solutions for bottles, such as screw caps, face issues with unreliable sealing, imperfect identification marking, and inconvenient unscrewing due to high friction and complex designs, especially when repeatedly opened and closed.
Innovation Solution
A combination of a decorative polymeric hood with a metal closure cap featuring perforations, corrugation, and an internal thread, where the hood has an annular projection with denticles and an intermittent collar for secure axial fixation, and a circular groove for enhanced torque transfer, ensuring reliable sealing and easy identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a small diameter cap is used, then the closure fits tightly on the bottleneck, but the friction in the screw joint increases making unsealing inconvenient
Solution Approach 1:
The invention divides the closure system into two separate components: a functional cap for sealing and a decorative hood for identification. The hood is segmented with perforations that can be easily broken, providing a tamper-evident feature without increasing friction on the bottleneck. The cap itself maintains its small diameter for tight fitting while the separate hood carries the identification and tamper-evident functions.
Solution Approach 2:
The decorative hood acts as an intermediary element between the functional cap and the external environment. It provides the identification markings and tamper-evident perforations without directly engaging in the screwing/unsealing operation. The hood is attached to the cap but can be separated, allowing the cap to maintain low friction for easy operation while the hood provides enhanced identification and tamper evidence.
2Loss of information
If identification marks are made on the cap surface, then identification is provided, but the means for identification marking remains imperfect
Solution Approach 1:
The invention moves the identification function from the two-dimensional cap surface to the three-dimensional decorative hood structure. The hood can incorporate raised ribs, grooves, and perforations that provide tactile and visual identification without requiring complex printing or marking processes on the cap itself. This adds a spatial dimension to identification that is more robust and easier to manufacture.
Solution Approach 2:
The closure system combines different materials with complementary properties: the cap is made from a material suitable for sealing (such as aluminum or plastic with sealing properties), while the hood can be made from a different material that allows for easy formation of identification features through molding or forming processes. This material differentiation enables simplified marking on each component for its specific function.
3Reliability
If a decorative hood is added, then tamper-evident means and decoration are improved, but the device complexity increases
Solution Approach 1:
The invention merges multiple functions into the decorative hood: identification through markings and ribs, tamper evidence through perforations, and aesthetic appeal through decorative shaping. By consolidating these functions into a single component that attaches to the cap, the overall system complexity is managed while achieving enhanced tamper evidence and decoration. The hood and cap together form an integrated closure system where each component has a specialized function.
Data Source
Figure 1~6
AI summary
The invention relates to the tamper-proof means for ready products, in particular to screw closures intended to close glass containers or bottles, wherein the bottleneck lip is threaded. These are commonly the bottles for aperitifs, liquors, vodka and other strong drinks gradually consumed so that said bottle is to ensure safe opening and reclosing, and possibly time and again. A combination of a decorative hood (1) and a closure cap (9) is proposed, wherein the decorative hood with a side wall (2) and a top is made of a polymeric material, while the closure cap provided with perforations (10) and corrugation (12,13) over the external surface, and an inner thread is fabricated from a metal, essentially aluminum, characterized in that the outer diameter of the decorative hood (1) surpasses the outer diameter of the closure cap (9), the inner surface of the decorative hood (1) being made with an annular projection (5) having denticles (6,7) on the inner surface and an annular intermittent collar (8) for fastening said hood on the closure cap in axial direction, aforesaid closure cap having an annular groove on its external surface.