Controlled Air-Bubble Gel Sheet Structure for Water Exudation
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Solution Overview
Problem
Conventional cosmetic mask gel sheets have limited exudation amounts, which affect their moisturizing effectiveness, despite using polyalcohols and non-ionic water-soluble polymers to enhance liquid exudation.
Innovation Solution
Incorporating air bubbles with specific diameters into the gel sheet to increase the specific surface area, balanced by controlling the number and size distribution of these bubbles, along with appropriate synthetic polymer and water content, forms fine asperities that enhance water exudation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If air bubbles are incorporated into the gel sheet to increase specific surface area, then water exudation amount increases, but gel sheet structural integrity may deteriorate
Solution Approach 1:
The gel sheet incorporates air bubbles as porous structures to increase the specific surface area. This porous structure provides numerous pathways for water exudation while maintaining the gel matrix's structural integrity through controlled bubble distribution and size
Solution Approach 2:
The gel sheet forms a composite structure combining the gel matrix with dispersed air bubbles. This composite structure allows the gel phase to maintain structural strength while the air bubble interfaces provide enhanced water exudation pathways
2Quantity of substance
If the number of air bubbles is increased to enhance water exudation, then moisturizing effect improves, but adhesion to skin may decrease
Solution Approach 1:
The gel sheet employs local quality variation by distributing air bubbles non-uniformly throughout the structure. Regions with higher bubble density provide enhanced water exudation, while regions with lower bubble density maintain stronger adhesion to the skin, optimizing both functions spatially
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 increased specific surface area due to air bubbles leads to higher water penetration and improved moisturizing effects, maintaining adhesion and user comfort.
Implementation Method 1
air bubbles form fine asperities on the surface of a gel sheet such that the specific surface area of the gel sheet increases
Implementation Method 2
water containing a medicinal ingredient and the like, which is contained in gel, exudes to the surface of the gel, and the water and the like permeate through the skin to which the gel is applied
Data Source
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AI summary
An object of the invention is to provide a cosmetic mask gel sheet having a high exudation amount, by which a sufficient moisturizing feeling can be obtained as a result of penetration of water and the like through the skin to which the gel sheet is applied, which is a cosmetic mask gel sheet 1A containing at least water and a synthetic polymer forming a network structure by reacting with a cross-linking agent, in which the gel sheet includes 10 to 100 air bubbles 11 having a diameter of 0.1 mm to 1.0 mm in an area of 1 cm2 in a plan view thereof while not including air bubbles having a diameter of 3.0 mm or more.