Pouch Container Locking Band and Lock Part for Leakage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pouch packages used for providing nutrients through Percutaneous Endoscopic Gastrostomy (PEG) often experience leakage due to insufficient folding or sealing, especially when pressurized, which can lead to unreliable discharge of nutrients.
Innovation Solution
A pouch-type container design featuring a pair of main-body sheets with a locking band and a lock part that includes a constricted and wider portion, allowing for secure folding and sealing, preventing leakage during pressurization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pouch package is pressurized to discharge nutrients through the spout, then the discharge function is improved, but leakage through the zip occurs due to insufficient folding or sealing
Solution Approach 1:
The main-body sheets are folded back in advance before pressurization, and the lock part is inserted into the locking band to secure the folded state. This preliminary folding and locking action ensures that the pouch maintains its folded configuration during subsequent pressurization, preventing leakage while enabling effective nutrient discharge through the spout.
2Reliability
If the main-body sheets are folded back during pressurization, then leakage prevention is improved, but the locking mechanism complexity increases
Solution Approach 1:
The lock part is formed integrally from the main-body sheets themselves, rather than being a separate component. The sheets are folded back and the lock part is inserted into the locking band, using the material's own structure to create the locking function. This self-service approach provides reliable leakage prevention while minimizing the addition of external locking components.
3Stability of the object's composition
If the lock part is inserted into the locking band with main-body sheets folded back, then the folded state stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The locking band is designed with a specific structure featuring a pair of fixed portions spaced apart in the width direction, creating an insertion space with defined dimensions. The lock part has a constricted portion with a minimum dimension smaller than the distance between fixed portions, allowing it to be inserted and locked in place. This localized structural design provides stable folded state maintenance while accommodating reasonable manufacturing tolerances.
Data Source
AI summary
A pouch-type container including a pair of main-body sheets defining a storage space for containing a packaged substance; an opening at a first end of the main-body sheets in a z-direction; a spout at a second end, opposite the opening, of the main-body sheets in the z-direction; and an opening/closing part offset from the opening toward the second end in the z-direction to open and close the storage space. The pouch-type container further includes: a locking band fixed to the main-body sheets at a pair of fixed portions spaced apart in a width direction (x direction) to define an insertion space with the outer surface of one of the main-body sheets, the width direction being perpendicular to the y-direction wherein the main-body sheets face each other and the z-direction; and a lock part including at least one of the main-body sheets and configured to be locked with the locking band.