Rotary Closure Cap With Attached Tamper Ring for Cartons
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Solution Overview
Problem
Existing closure devices for beverage cartons fail to ensure that the closure cap remains attached to the basic member after initial opening, and the tamper-evident device does not reliably change states before the container is pierced or cut.
Innovation Solution
A closure device design where the closure cap is rotatably mounted on the basic member, connected via an anchor ring and a connecting element, ensuring the cap remains attached even after opening, with a tamper-evident device that changes states after a specific rotational angle, delaying the cutting element's movement through the inlet opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the closure cap is designed to be separable from the basic member after opening, then the opening operation is simplified, but the closure cap cannot remain attached to signal tampering
Solution Approach 1:
The closure device is divided into separable components (closure cap and basic member) that can be easily opened, while a separate anchor ring with connecting element remains on the basic member to provide continuous tamper indication. This segmentation allows the opening function and tamper indication function to be independently optimized.
Solution Approach 2:
The anchor ring serves as an intermediary element that remains between the closure cap and basic member after separation. It connects to the basic member via connecting elements and provides the tamper indication function, mediating between the separable cap and the fixed basic member to ensure continuous security signaling.
2Productivity
If the cutting element is positioned to pierce the container immediately upon opening rotation, then opening is efficient, but the tamper-evident device may not have time to change state reliably
Solution Approach 1:
The tamper-evident device is designed to change state before the cutting element pierces the container. The indicator element is positioned and configured to shift position or change configuration during the initial rotation, providing preliminary tamper indication before the cutting action occurs, ensuring reliable state change timing.
Solution Approach 2:
The cutting element is designed with movable positioning that delays its piercing action. The cutting element moves from an initial retracted position to an active piercing position during rotation, allowing the tamper-evident device to complete its state change first. This dynamic positioning controls the sequence of operations to ensure reliability.
3Reliability
If the closure cap is permanently attached to the basic member, then tamper indication is reliable, but the closure device cannot be opened by separating the cap
Solution Approach 1:
The closure device is segmented into a separable closure cap and basic member for easy opening, while a permanent anchor ring with connecting elements remains attached to the basic member. This segmentation allows the cap to be removed for opening while the anchor ring provides continuous tamper indication by remaining permanently attached to the basic member.
Solution Approach 2:
The anchor ring acts as an intermediary that provides permanent attachment and tamper indication while allowing the closure cap to be separable. It connects to the basic member through connecting elements and remains as a permanent fixture, mediating between the need for easy cap removal and the need for reliable permanent indication.
Data Source
AI summary
A closure device for closing a container, the closure device including a basic member, the basic member having a channel extending along a closure axis and having an inlet opening and a pouring opening, the closure device including a closure cap, the closure cap and the basic member being formed and arranged relative to each other in such a manner that the closure cap closes the pour-ing opening in a closed state of the closure device and releases it in an open state of the closure device. The closure cap is mounted on the basic member in the closed state of the closure device so as to be rotatable about the closure axis relative to the basic member, so that the closure cap is rotatable in an opening direction relative to the basic member, to bring the closure device into the open state.