Valve Sack Venting Device with Air-Permeable Reinforcement
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Solution Overview
Problem
Existing valve bags face issues with inadequate ventilation, leading to dust development, risk of bursting, and product damage during filling, which compromises filling efficiency and product protection.
Innovation Solution
A valve sack with a cross bottom and side walls featuring a tubular ventilation chamber formed by air-permeable material, where the air-permeable material covers the entire opening of the valve base and is glued to the tabs and bottom flap, ensuring only air or gaseous substances can pass through, while protecting the filter paper from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter sheet is integrated in the valve base with exposed central section, then air permeability is improved, but the filter sheet is vulnerable to damage during storage and transport
Solution Approach 1:
The patent introduces an air-permeable reinforcement material as an intermediary layer between the filter sheet and the valve base liner. This reinforcement material acts as a mediator that provides mechanical strength and protection to the filter sheet while maintaining air permeability, thereby resolving the contradiction between air permeability and filter sheet protection.
2Productivity
If the venting device allows air to escape during filling, then filling efficiency is improved, but dust and moisture can penetrate through the venting system
Solution Approach 1:
The patent employs air-permeable materials including filter paper and reinforcement materials with controlled porosity. These porous materials allow air to pass through during filling while their fine pore structure prevents dust and moisture penetration, thus resolving the contradiction between filling efficiency and protection against harmful factors.
3Reliability
If air-permeable material is glued over the entire opening of the valve base, then ventilation is optimized, but the complexity of manufacture increases
Solution Approach 1:
The patent combines multiple functional layers (filter sheet, air-permeable reinforcement material, and valve base liner) into a single integrated venting device assembly. This merging of layers simplifies the manufacturing process by reducing the number of separate components and assembly steps, while maintaining optimized ventilation performance through the coordinated structure of the combined layers.
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 ensures optimal ventilation, prevents dust and moisture ingress, and protects the filter paper, facilitating efficient and damage-free filling by allowing air to escape while maintaining airtightness, thus enhancing filling efficiency and product protection.
Implementation Method 1
a piece of air permeable material (23) which ensures the passage of air or similar gaseous substances
Implementation Method 2
air-permeable material covers the entire opening of the valve base and is glued to the tabs and bottom flap, ensuring only air or gaseous substances can pass through
Implementation Method 3
the air-permeable material is attached, in particular glued, over the entire opening of the valve base
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The valve bag (1) has side walls, a base of a tubular filling device and a venting device (5). The surface of the filling device is connected partly with the surface of the venting device in form-fit manner so that a part of the surface of the venting device forms an inner base surface of the valve bag. The venting device forms a venting chamber along the base.