Colored Nonwoven Fabric With Skin-Like Texture and Light Control

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Solution Overview

Problem

Existing makeup and tattoo seal technologies struggle to provide a natural appearance and resilient feel, while concealing skin imperfections and maintaining a sense of unity with the skin, and require complex application techniques.

Innovation Solution

A colored nonwoven fabric with an uneven surface structure, where convex portions have a higher L*1 value than concave portions, mimicking skin texture, and containing nanofibers for improved rub fastness, gloss, and transparent feel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a foundation tape or tattoo seal is used to conceal skin imperfections, then the skin appearance is improved, but the product lacks a natural skin-like texture and resilient feel

Engineering Contradiction:

Improveskin appearance uniformityVSAvoidsurface texture realism

Core Design Contradiction:

Manufacturing precisionVSShape

Solution Approach 1:

The nonwoven fabric incorporates nanofibers with varying local densities and arrangements to create micro-unevenness on the surface. This local variation in fiber distribution mimics the natural skin texture, allowing different regions of the fabric to exhibit skin-like characteristics while maintaining overall concealment functionality.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention combines conventional nonwoven fabric materials with nanofibers to create a composite structure. This composite material integrates the opacity and concealment properties of traditional materials with the fine texture-mimicking capabilities of nanofibers, achieving both skin imperfection coverage and natural skin-like surface texture.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If conventional nonwoven fabric is used for makeup applications, then the material is easy to manufacture, but it lacks gloss and transparent feel similar to real skin

Engineering Contradiction:

Improveproduction simplicityVSAvoidsurface gloss and transparency

Core Design Contradiction:

Ease of manufactureVSShape

Solution Approach 1:

The invention modifies the physical parameters of the nonwoven fabric by incorporating nanofibers with specific diameter ranges and surface properties. These parameter changes in fiber dimensions and surface characteristics enable the fabric to exhibit gloss and transparent feel similar to real skin, while maintaining compatibility with existing manufacturing processes.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a smooth surface nonwoven fabric is used, then the manufacturing process is simple, but it scatters light excessively and does not mimic natural skin texture

Engineering Contradiction:

Improvesurface structure complexityVSAvoidlight scattering control

Core Design Contradiction:

Device complexityVSIllumination intensity

Solution Approach 1:

The nanofibers in the nonwoven fabric create a curved, three-dimensional surface topology rather than a flat structure. This curvature at the nanoscale level controls light scattering by reflecting and refracting light in multiple directions, mimicking the way light interacts with natural skin surface contours and reducing excessive scattering.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS12577712B2Colored non-woven fabric

Publication Date: 2026.03.17 KAO CORP

AI summary

A colored nonwoven fabric that contains a colorant and nanofibers, in which the colored nonwoven fabric has an uneven shape on at least part of a surface thereof, and an L*1 value of convex portions of the uneven shape is higher than an L*2 value of concave portions of the uneven shape; a colored nonwoven fabric set; and a process for producing the colored nonwoven fabric.