Flexible Bag Spout Filling Nozzle Positioning
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Solution Overview
Problem
The existing methods for filling flexible bags with spouts equipped with no-spill systems often compromise filling times and production volumes due to the potential negative impact of the no-spill system on the filling process.
Innovation Solution
A filling method that positions the filling nozzle outside the spout, allowing the product to flow into the main duct and deform the valve membrane's flaps inwardly to enter the inner chamber, eliminating the need for complex injection cannulas and protecting the valve's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filling nozzle is inserted inside the spout to fill the bag, then the filling process can be completed, but the valve membrane may be damaged and the no-spill system may fail
Solution Approach 1:
The filling nozzle is extracted from the spout interior and positioned outside the spout. The product flows through the spout rather than the nozzle penetrating the valve membrane, thus protecting the no-spill system while maintaining filling capability
Solution Approach 2:
The spout itself acts as an intermediary medium. Instead of the nozzle directly contacting the valve membrane, the product flows through the spout's main duct as an intermediate path, allowing filling without damaging the no-spill system
2Ease of manufacture
If complex injection cannulas are used to fill the bag through the spout, then filling can be achieved, but the device complexity increases and valve integrity is compromised
Solution Approach 1:
The complex injection cannula system is removed entirely. The filling nozzle is extracted and repositioned outside the spout, eliminating the need for complex internal injection mechanisms while simplifying the overall device structure
Solution Approach 2:
Instead of inserting the nozzle inside the spout (conventional approach), the nozzle is positioned outside and allows product to flow through the spout (inverted approach). This reversal simplifies the device while maintaining functionality
3Quantity of substance
If the filling time is extended to ensure proper filling, then filling completeness is improved, but production volume decreases
Solution Approach 1:
The filling process maintains continuous product flow through the spout without interruptions or pauses. The valve membrane remains intact throughout filling, allowing uninterrupted operation and maximizing production volume while ensuring complete filling
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
This method enhances reliability and efficiency by preventing accidental leakage while maintaining the integrity of the no-spill system, ensuring higher production volumes without risking damage to the valve.
Implementation Method 1
allowing the product to flow into the main duct and deform the valve membrane's flaps inwardly
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The invention relates to a method for filling a thin-body flexible package (1) provided with a spout (6). The spout (6) is provided with a normally closed membrane valve (52). The filling system provides a filling nozzle (104) which dispenses the product intended to fill the bag upstream of the valve (52), outside the spout (6) or inside it.