Double-Structure Aerosol Container with Compressed Gas Propellant
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Solution Overview
Problem
Existing foam forming aerosol products face safety concerns due to combustible propellants and stability issues during storage and use, as well as complexities in mixing ratios and exposure to air, which affect their foam-forming ability and environmental impact.
Innovation Solution
A double structure container with independent liquid concentrate filling spaces and a discharging mechanism that simultaneously discharges a first liquid concentrate composition containing an organic acid and a second liquid concentrate composition containing a hydrogen carbonate, using an incombustible compressed gas as the propellant, ensuring a consistent mixing ratio and preventing exposure to air, thereby enhancing safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquefied gas propellants are used to achieve favorable foam-forming ability, then foam quality is improved, but safety hazards and environmental impact worsen
Solution Approach 1:
The patent changes the physical state parameter of the propellant from liquefied gas to compressed gas, which fundamentally alters its chemical properties from combustible to non-combustible while maintaining the pressure-driven foam-forming mechanism. This parameter change resolves the contradiction by eliminating combustibility while preserving foam quality.
Solution Approach 2:
The patent adopts a disposable aerosol can design where the entire container is discarded after use. This allows the use of simple compressed gas propellants without complex safety recovery systems, as the container's short operational life eliminates long-term storage safety concerns and enables straightforward disposal without explosion hazards.
2Reliability
If organic acid and hydrogen carbonate compositions are separately stored to enable foam formation, then foam-forming capability is improved, but device complexity and operation difficulty worsen
Solution Approach 1:
The patent segments the liquid concentrate into two separate compartments within the aerosol can, each containing one reactant (organic acid or hydrogen carbonate). This segmentation allows both compositions to be stored separately to prevent premature reaction while enabling their controlled mixing through the spraying mechanism, thus maintaining foam-forming capability without requiring complex external mixing equipment.
Solution Approach 2:
The patent merges the storage and mixing functions into a single integrated aerosol can system. The two separate compositions are combined within one container structure that provides automatic mixing through the spraying process, eliminating the need for separate storage containers and manual mixing operations that would increase device complexity.
3Reliability
If compositions are dispensed from separate containers to achieve proper mixing ratio, then foam quality is improved, but ease of operation worsens
Solution Approach 1:
The aerosol can system performs automatic self-mixing of the two compositions through its internal structure and spraying mechanism. When the user activates the spray, the compressed gas propellant simultaneously propels both liquid concentrates through their respective nozzles, where they automatically mix in appropriate ratios without requiring user intervention for measurement or mixing control.
Solution Approach 2:
The patent pre-configures the container with two separate liquid concentrate compartments and corresponding spray nozzles positioned to ensure proper mixing during discharge. The structural arrangement of the compartments, nozzles, and propellant system is predetermined to automatically achieve the correct mixing ratio, eliminating the need for user adjustment or measurement during operation.
4Stability of the object's composition
If compositions are stored in separate hermetically sealed containers, then storage stability is improved, but ease of operation worsens
Solution Approach 1:
The internal container structure is segmented into separate hermetically sealed compartments for the organic acid composition and hydrogen carbonate composition. This segmentation maintains storage stability by preventing premature contact and reaction between the two compositions, while the integrated aerosol valve system ensures simple operation by automatically dispensing both compositions simultaneously when activated.
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 allows for safe use in any environment, maintains long-term storage stability, and effectively forms a favorable foam by utilizing an incombustible propellant and ensuring consistent mixing ratios, addressing safety and stability concerns while improving foam-forming ability.
Implementation Method 1
an organic acid composition containing an organic acid such as citric acid, for example, and a hydrogen carbonate composition containing a hydrogen carbonate such as sodium hydrogen carbonate, for example, is known to form a foam as they generate carbon dioxide gas when mixed together
Implementation Method 2
The aerosol product delivers a foamy discharge as the evaporating propellant forms bubbles in the discharged liquid
Implementation Method 3
the evaporating propellant forms bubbles in the discharged liquid
Data Source
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AI summary
Provided is a foam forming aerosol product that can be used highly safely irrespective of the environment in which it is used and that has excellent storage stability and is capable of readily forming a favorable foam. The foam forming aerosol product includes a double structure container having a propellant filling space, two liquid concentrate filling spaces, and a discharging mechanism for simultaneously discharging contents filled in the two liquid concentrate filling spaces. The propellant filling space is filled with a propellant composed of a compressed gas. A first liquid concentrate filling space is filled with a first liquid concentrate composition containing 0.5 to 15.0% by mass of an organic acid, and a second liquid concentrate filling space is filled with a second liquid concentrate composition containing 0.5 to 15.0% by mass of a hydrogen carbonate. The first liquid concentrate composition discharged from the first liquid concentrate filling space and the second liquid concentrate composition discharged from the second liquid concentrate filing space are mixed to form a foam.