Spouted Pouch Flow Path Control Seal Design
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Solution Overview
Problem
Existing spouted pouch mechanisms struggle to temporarily stop pouring liquid contents without altering the pouch's attitude, leading to potential pourability issues when resuming flow, as the close contact between front and back films can hinder the flow of liquid contents.
Innovation Solution
A spouted pouch design featuring flow path control seal portions with action points positioned far from the spout body, a spout attachment base interposed between the films, and unsealed portions adjacent to the seal portions, allowing for easy suspension and resumption of pouring by gripping the outer edge of the film spaced region, with specific dimension ratios (W/X=1.2 to 2.0 and L/X=0.3 to 1.5) to maintain pourability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a narrowed portion is formed to temporarily stop pouring liquid contents, then the ability to suspend pouring is improved, but the pourability when resuming flow deteriorates due to close contact between front and back films
Solution Approach 1:
The spout attachment base portion acts as an intermediary element inserted between the front and back films at the narrowed portion. This base portion with thickness dimension X prevents the films from making direct close contact, thereby maintaining the pouring path open even when the narrowed portion is gripped to suspend liquid flow. The base portion serves as a mediator that allows temporary suspension while preserving future pourability.
Solution Approach 2:
The invention controls specific dimensional parameters of the spout attachment base portion (thickness X, length L from base to action point, and width W between action points) with specific ratios (W/X=1.2 to 2.0 and L/X=0.3 to 1.5). By optimizing these parameters, the design achieves the right balance between the ability to suspend pouring and the ease of resuming flow, preventing the films from sticking together while maintaining structural integrity.
2Productivity
If the spout attachment base portion thickness X is increased to prevent film contact, then pourability is improved, but the dimensions L and W must be adjusted proportionally to maintain the optimal ratios
Solution Approach 1:
The invention establishes specific ratio relationships between dimensional parameters (W/X=1.2 to 2.0 and L/X=0.3 to 1.5) rather than fixing absolute values. This approach allows flexibility in designing for different pouch sizes while ensuring optimal performance. When the base thickness X changes, the other dimensions L and W are adjusted proportionally to maintain these ratios, achieving pourability without excessive complexity.
3Ease of operation
If flow path control seal portions are positioned far from the spout body, then the ability to control pouring is improved, but the structural complexity increases
Solution Approach 1:
The flow path control system is segmented into distinct components: the spout attachment base portion and the flow path control seal portions with action points. By positioning the seal portions separately at strategic locations (with length L from the base), the design achieves effective pouring control while maintaining clear functional segmentation. This reduces structural complexity by making each component's function explicit and independent.
Data Source
AI summary
Provided is a spouted pouch capable of improving the ability to suspend pouring liquid contents, the ease of adjusting a pouring force, and the ease of repouring. In the spouted pouch (10), a pouch body (20) has flow path control seal portions (22) formed on both left and right sides across an imaginary line A inside the outer edge seal portion (21). Assuming that a thickness dimension of the spout attachment base portion (31a) is taken as X, length dimension from the spout attachment base portion (31a) to the action point portion (22a) of flow path control seal portions (22) is taken as L, and a width dimension between the action point portions (22a) is taken as W, the thickness dimension X, the length dimension L, and the width dimension W are set so as to satisfy relationships of W/X=1.2 to 2.0 and L/X=0.3 to 1.5.