Decorative Sheet Surface Topography for Low-Gloss Tactile Contrast
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Solution Overview
Problem
Decorative sheets with high gloss lack appropriate tactile differentiation between glossed and non-glossed regions, failing to replicate natural materials effectively.
Innovation Solution
A decorative sheet design with controlled specular gloss, skewness, and kurtosis differences between regions, incorporating a surface protective layer with binder resin and particles to create distinct tactile feels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a decorative sheet is provided with a low gloss to improve aesthetic appearance, then the gloss is reduced, but the tactile feel becomes uniform and inappropriate across different regions
Solution Approach 1:
The patent applies local quality by creating different surface characteristics in different regions. The first region has a low-gloss surface with flattened particles, while the second region maintains a different surface structure, allowing each region to have appropriate tactile and visual properties for its intended function.
Solution Approach 2:
The decorative sheet is segmented into multiple regions with different surface treatments. The first region undergoes a flattening treatment that reduces gloss and creates a specific tactile feel, while the second region retains different characteristics, enabling regional differentiation of both visual and tactile properties.
2Illumination intensity
If the entire surface is treated to reduce gloss, then aesthetic appearance improves, but the ability to replicate natural material textures is compromised
Solution Approach 1:
Different regions of the decorative sheet are treated differently to replicate natural material textures accurately. The first region receives a flattening treatment appropriate for certain texture types, while the second region maintains different surface characteristics, allowing faithful reproduction of complex natural textures that require varied surface properties.
Data Source
AI summary
A decorative sheet includes a first surface and a second surface positioned opposite to the first surface. The first surface includes a first region and a second region that is different from the first region. The decorative sheet includes a surface protective layer, a design layer, and a substrate in order from the first surface toward the second surface. The design layer includes a patterned portion disposed only in a location that overlaps the first region. An average skewness Ssk1 of the first region and the average skewness Ssk2 of the second region satisfy a relationship (i), shown below. An average kurtosis Sku1 of the first region A1 and an average kurtosis Sku2 of the second region satisfy a relationship (ii), shown below0<Ssk2<Ssk1<1(i)3<Sku2<Sku1<5.(ii)