Container Spout Tamper-Evident Sealing Stopper Design
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Solution Overview
Problem
Existing closable spouts with tamper-indicating rings have a design where the ring is difficult to see, leading to uncertainty about whether the closure has been opened, and the seal is not absolutely secure due to the ability to rotate the drinking tube after unscrewing the cap.
Innovation Solution
A sealing stopper is fixed against rotation within the pouring tube, with a tamper-proof part visible on the cap that breaks off when the cap is unscrewed, ensuring the stopper cannot rotate and maintaining a secure seal, and an additional film at the lower end that tears open for enhanced imperviousness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tamper-indicating ring is placed beneath the closure cap, then tamper indication is achieved, but visibility of the tamper indication is poor
Solution Approach 1:
The tamper indication is moved from a horizontal plane (ring beneath the cap) to a vertical dimension (protrusion extending upward from the sealing stopper through the cap). This allows the tamper indication to be visible from the top side of the cap, solving the visibility problem while maintaining the tamper indication function.
2Ease of operation
If the drinking tube can be rotated after unscrewing the cap, then ease of operation is improved, but seal security is compromised
Solution Approach 1:
The sealing stopper is divided into two functional parts: a lower sealing portion that remains fixed in the pouring tube to maintain the seal, and an upper drinking tube portion that can be rotated and removed. This segmentation allows the seal to remain secure while the drinking tube is easily maneuverable.
Solution Approach 2:
The sealing stopper acts as an intermediary element between the closure cap and the pouring tube. It is held by the cap in such a way that unscrewing the cap raises the stopper, creating a secure seal that prevents rotation of the drinking tube relative to the pouring tube.
3Ease of operation
If the sealing stopper is held to allow rotation, then ease of operation is improved, but absolute seal security cannot be achieved
Solution Approach 1:
The sealing stopper is segmented into a fixed lower portion that maintains the seal and a movable upper portion for drinking. The lower portion is guided in a rotationally fixed manner in the pouring passage, ensuring absolute seal security, while the upper portion can be rotated and removed for ease of operation.
Data Source
AI summary
The invention relates to a pourer (1) of a container comprising a pouring nozzle (2) which forms a pouring channel and on the external thread (3) of which a covering cap (4) is screwed. A sealing stopper (6) which closes the pouring channel is guided non-rotatably and is vertically displaceable in the pouring channel of the pouring nozzle. The sealing stopper (6) is retained on the cap which is rotatable relative thereto, such that a screwing on of the cap leads to a lifting of the sealing stopper (6) in the pouring channel. The cap (4) has an upper opening in which the sealing stopper (6) lies with the upper end thereof. The upper end of the sealing stopper (6) has at least one tamper-evident part (7) which breaks off or breaks up when the cap is unscrewed relative to the non-rotatably retained sealing stopper.