Dual-Valve Packaging Vent for Continuous Gas Release
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Solution Overview
Problem
Packaging containers with breakable valves cannot be continuously used after the valve splits open, posing a problem for containers that generate gas over time, such as battery packs.
Innovation Solution
A valve system comprising a breakable valve that splits open when internal pressure increases, a check valve on the outer side to discharge gas, and an attachment portion fixed to the container, allowing continuous use even after the breakable valve has opened, with the check valve ensuring gas discharge and preventing air re-entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a breakable valve is used to release gas from the packaging container, then the container can prevent rupture from internal pressure, but the container cannot be continuously used after the valve splits open
Solution Approach 1:
The valve system is divided into two distinct functional components: a breakable valve that sacrifices itself to open at a predetermined pressure threshold, and a check valve that remains intact and reusable. This segmentation allows the pressure relief function to be separated from the continuous sealing function, enabling the container to maintain usability after pressure release.
Solution Approach 2:
The check valve acts as an intermediary component between the breakable valve and the container interior. After the breakable valve opens, the check valve mediates the gas discharge process and then seals the passage, allowing the system to transition from a single-use breakable valve to a reusable dual-valve system that maintains both safety and continuous usability.
2Object-generated harmful factors
If a breakable valve is used to discharge gas, then gas can be released from the container, but air may re-enter the container after pressure equalization
Solution Approach 1:
The check valve serves as a one-way intermediary that allows gas to pass from the container interior to the exterior while preventing reverse flow. This intermediary component enables unidirectional gas discharge, ensuring that harmful gases can escape while preventing air re-entry that would contaminate the container interior.
Solution Approach 2:
The check valve operates on the inverse principle of a standard valve: it allows flow in one direction (outward gas discharge) while blocking flow in the opposite direction (inward air entry). This inverted functionality solves the problem by using the pressure differential created during gas discharge to automatically seal against air re-entry.
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
Enables continuous use of packaging containers by allowing gas discharge after the breakable valve opens, preventing container rupture and maintaining internal vacuum, thus extending the life of gas-generating contents like batteries.
Implementation Method 1
when internal pressure of the packaging container increases due to gas generated inside the packaging container
Implementation Method 2
through which the gas is discharged from the inside of the packaging container to the outside thereof according to internal pressure of the packaging container
Implementation Method 3
The attachment portion is typically fixed to the packaging container through heat-sealing in a state of being sandwiched between the resin molded articles or the films constituting the packaging container
Data Source
AI summary
A valve for forming a passage through an inside and an outside of a packaging container constituted by resin molded articles or films are in communication with each other includes a breakable valve that's arranged to block the passage and splits open when internal pressure of the packaging container increases due to gas generated inside the packaging container, a check valve that's arranged on a secondary side located on an outer side to the breakable valve in the passage and through which the gas is discharged from the inside of the packaging container to the outside thereof according to internal pressure of the packaging container after the breakable valve has split open, and an attachment portion that delimits at least a portion of the passage and is fixed to the packaging container in a state of being sandwiched between the resin molded articles or the films constituting the packaging container.