Foaming Porous Pad Structure for Rapid and Sustained Skin Cleansing Foam
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Solution Overview
Problem
Substrate-based skin care devices often fail to generate sufficient foam quickly or maintain high foam levels during use, leading to decreased perceived cleansing ability.
Innovation Solution
A foaming porous pad with a nonwoven pile fabric substrate and a foaming composition, where the substrate includes a backing layer and a pile of fibers with a denier of less than 9, is used in conjunction with a motorized handheld device to generate high and long-lasting foam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a substrate-based skin care device is used for cleansing, then skin treatment function is provided, but sufficient foam is not generated quickly or maintained at high levels during use
Solution Approach 1:
The patent employs a porous pad substrate with specific porosity characteristics to enhance foam generation. The porous structure allows for rapid liquid absorption and distribution, enabling quick foam formation upon contact with water or cleanser. The porosity also facilitates sustained foam release during use, addressing both the speed of foam generation and the maintenance of foam levels throughout the cleansing process.
Solution Approach 2:
The invention uses a composite structure combining a porous pad substrate with a pile layer having specific denier characteristics. This composite material configuration optimizes both foam generation speed and foam maintenance. The combination of different material properties (porosity of the base substrate and fiber characteristics of the pile layer) creates synergistic effects that simultaneously improve rapid foam formation and sustained foam presence during use.
2Productivity
If foam generation is increased for better cleansing perception, then cleansing ability is improved, but the device complexity increases
Solution Approach 1:
The patent optimizes foam generation by adjusting specific parameters of the substrate materials rather than adding complex mechanisms. The porosity of the pad substrate and the denier of the pile layer fibers are carefully selected to achieve optimal foam generation. This parameter-based approach enhances cleansing efficacy while maintaining relatively simple device construction, avoiding the need for complex mechanical or chemical foam-generating systems.
Data Source
AI summary
A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad.