Synthetic Resin Spout Stopper Annular Score Impact Protection
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Solution Overview
Problem
The existing synthetic resin spout stoppers face issues with annular score damage due to impact during distribution and insufficient ultrasonic impact absorption, making it difficult to break the score for container disposal and potentially causing pinhole defects during welding.
Innovation Solution
The introduction of an additional annular score adjacent to the existing annular score on the spout stopper's flange wall, with a larger residual wall thickness, helps absorb impact and prevent damage during ultrasonic welding, ensuring easy breakage for disposal without pinhole formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the residual wall thickness at the annular score site is increased to avoid damage from impact, then the impact resistance is improved, but it becomes markedly difficult to break the annular score when discarding the container
Solution Approach 1:
The patent applies local quality by creating a corrugated portion at a specific location in the annular flange wall, away from the annular score site. This localized structural modification absorbs impact energy without affecting the wall thickness at the score location, thereby maintaining both impact resistance and score breakability
Solution Approach 2:
The corrugated portion acts as a pre-designed cushioning structure that absorbs impact energy before it reaches the annular score. This beforehand cushioning protects the score from damage during distribution while keeping the score thin and breakable for disposal
2Productivity
If the ultrasonic welding method is employed to weld the spout stopper to the container, then the welding efficiency is improved, but the annular score may be damaged by ultrasonic impact
Solution Approach 1:
The corrugated portion serves as an intermediary structure between the ultrasonic welding zone and the annular score. It absorbs and dissipates the ultrasonic vibration energy, preventing direct transmission of harmful impacts to the score while allowing efficient welding to proceed
3Reliability
If a corrugated portion or stepped portion is formed in the annular flange wall to absorb ultrasonic impact, then the ultrasonic impact absorption is improved, but the effect is not necessarily sufficient and the annular score may still be damaged
Solution Approach 1:
The patent refines the corrugated portion design to optimize its impact absorption capability at the specific location in the annular flange wall. By carefully positioning and dimensioning this localized feature, adequate protection is achieved without excessive structural complexity
Solution Approach 2:
The patent optimizes parameters such as the depth, spacing, and shape of the corrugated portion to maximize ultrasonic impact absorption. By adjusting these parameters, sufficient score protection is achieved with minimal added complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents annular score damage from impacts and ultrasonic welding, facilitating easy separation and reducing pinhole defects, ensuring reliable and efficient container disposal.
Implementation Method 1
The upper surface of an outer peripheral edge part of the annular flange wall is welded to the inner surface of the container by an ultrasonic welding method
Data Source
AI summary
An improved synthetic resin spout stopper to be combined with a discharge port of a container is provided. The spout stopper does not pose difficulty in breaking an annular score formed in an annular flange wall, when discarding the container. Damage to the annular score is avoided even if a considerably great impact is applied to the spout stopper owing to a fall of the container. Damage to the annular score is also avoided even when ultrasonic welding is adopted for welding the container and the spout stopper together. In an inner peripheral edge part of the annular flange wall, an annular additional score is disposed adjacent to the annular score radially outwardly of and/or radially inwardly of the annular score.