Decorative Sheet Raised-Layer Composition for Tactile, Low-Gloss Surfaces
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Solution Overview
Problem
Existing decorative sheets fail to simultaneously impart an excellent tactile sensation and reduce gloss, limiting their ability to replicate the appearance of natural materials like wood.
Innovation Solution
A decorative sheet design featuring a raised layer with a binder resin, resin particles, and inorganic particles, where the resin particles have a larger average size than the inorganic particles, creating protrusions that provide varying thicknesses to achieve both tactile sensation and reduced gloss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the surface is embossed to impart tactile sensation, then tactile sensation is improved, but gloss reduction is insufficient
Solution Approach 1:
The patent applies local quality by using inorganic particles specifically in the raised portions of the embossed pattern, while keeping other areas different. This localized application of inorganic particles in the protruding regions provides both tactile sensation through the embossed shape and gloss reduction through the light-scattering properties of the inorganic particles, resolving the contradiction between improving tactile sensation and reducing gloss.
2Shape
If synthetic resin beads are used to impart tactile sensation, then tactile sensation is improved, but gloss cannot be reduced
Solution Approach 1:
The patent applies parameter changes by substituting synthetic resin beads with inorganic particles that have different optical properties. The inorganic particles possess light-scattering characteristics that synthetic resin beads lack, thereby achieving both tactile sensation through the raised pattern and gloss reduction through the optical properties of the inorganic material, resolving the contradiction between tactile sensation and gloss reduction.
3Illumination intensity
If the decorative sheet has high gloss, then appearance is improved, but natural object appearance cannot be expressed
Solution Approach 1:
The patent applies local quality by selectively reducing gloss only in the raised portions where inorganic particles are present, while maintaining different appearance characteristics in other areas. This localized gloss reduction in the embossed regions creates a natural appearance that mimics the irregular surface of natural objects, resolving the contradiction between maintaining appearance quality and expressing natural object characteristics.
Data Source
AI summary
A decorative sheet includes a design layer that displays a design; and a raised layer stacked to the design layer. The raised layer includes a raised portion provided in a region overlapping a partial region of the design layer. The raised portion includes a binder resin, resin particles, and inorganic particles. An average particle size of the resin particles is larger than an average particle size of the inorganic particles. The raised portion includes protrusions formed by protrusion of the inorganic particles.