Non-Aerosol Skin Cleansing Container for High-Air-Ratio Foam
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Solution Overview
Problem
Existing skin cleansing compositions struggle to generate foams with high air ratios while maintaining good foam quality, requiring further improvement in gas-liquid mixing mechanisms.
Innovation Solution
A non-aerosol-type container with a specific gas-liquid mixing part and foam micronizing part, combined with a skin cleansing composition containing anionic surfactants, polyols, and water, allows for the discharge of foams with a high air ratio of 20/1 to 30/1, ensuring fine and elastic foam quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional gas-liquid mixing mechanism is used, then the structure is simple, but the air ratio in the discharged foam is insufficient (less than 20/1)
Solution Approach 1:
The gas-liquid mixing mechanism is divided into multiple independent channels: a liquid supply channel for delivering the skin cleansing composition, a gas supply channel for introducing air, and a mixing chamber where they combine. This segmentation allows precise control over the air-to-liquid ratio while maintaining structural clarity and manufacturability.
Solution Approach 2:
A mixing chamber serves as an intermediary component between the gas and liquid supply channels. This intermediate space allows thorough mixing of air and skin cleansing composition before discharge, enabling the foam to achieve a high air ratio of 20/1 to 30/1 while maintaining a relatively simple overall structure.
2Quantity of substance
If the air ratio is increased to improve foam volume, then the foam quantity increases, but the foam quality deteriorates (losing fineness and elasticity)
Solution Approach 1:
The patent optimizes the air-to-liquid volume ratio parameter within a specific range of 20/1 to 30/1. This parameter optimization, combined with controlling the skin cleansing composition formulation (anionic surfactant 0.5-18%, polyol 2-50%, water 40-90%), achieves the balance between foam volume and foam quality, producing fine and elastic foams with high air ratio.
3Productivity
If more air is mixed with the liquid cleansing agent, then the foam expansion ratio increases, but the foam stability and quality decrease
Solution Approach 1:
The patent uses a composite formulation of skin cleansing composition containing multiple components: anionic surfactant (0.5-18%), polyol (2-50%), and water (40-90%), with the total of anionic surfactant and polyol being 10-60%. This composite material approach enhances foam stability while maintaining high expansion ratio through optimized composition ratios.
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 provides a comfortable user experience with high detergency and good foam quality, achieving fine and elastic foams with a high air ratio.
Implementation Method 1
a gas-liquid mixing part, a foam micronizing part
Implementation Method 2
a gas-liquid mixing part, a foam micronizing part
Data Source
Figure 1~2
AI summary
The present invention relates to an article for skin cleansing agent which can generate foams having a high air ratio and achieve good foam quality. An article for skin cleansing agent comprising a non-aerosol-type container filled with a skin cleansing composition, wherein the non-aerosol-type container comprises a gas-liquid mixing part, a foam micronizing part, and a discharge outlet, and has a mechanism for discharging air and the skin cleansing composition at a volume ratio (air/composition) of 15/1 or more and 38/1 or less from the discharge outlet, and the skin cleansing composition comprises: (A) 0.5% by mass or more and 18% by mass or less, in terms of acid of a specific anionic surfactant; (B) 2% by mass or more and 50% by mass or less of a specific polyol; and (C) 40% by mass or more and 90% by mass or less of water.