Manganese Composite Oxide Decorative Sheet for Heat Insulation
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Solution Overview
Problem
Decorative sheets used in buildings and vehicles face issues with warping due to temperature increases from direct sunlight, and existing heat-insulating solutions struggle to achieve both excellent heat-insulating performance and design with muted colors while maintaining weather-resistant contact.
Innovation Solution
A decorative sheet comprising a base sheet, a decorative layer containing a composite oxide with manganese, and a surface protective layer, with specific thickness and composition ranges, along with a resin layer, to provide heat-insulating performance, weather-resistant contact, and design with muted colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If carbon black pigment is used in the decorative sheet layers, then coloring power and covering power are improved, but heat absorption increases causing warping and temperature increase inside buildings
Solution Approach 1:
The patent changes the chemical composition parameter of the pigment from carbon black to inorganic pigments (Fe-Cr-O spinel structure), fundamentally altering the material's optical and thermal properties to reduce heat absorption while maintaining coloring functionality
Solution Approach 2:
The patent uses composite inorganic pigment structures, specifically Fe-Cr-O spinel compounds, which combine multiple elements to achieve both coloring power and reduced heat absorption compared to pure carbon black
2Object-affected harmful factors
If inorganic pigments like Fe-Cr-based black pigment are used to reduce heat absorption, then heat-insulating performance is improved, but weather-resistant contact deteriorates due to chrome content restrictions
Solution Approach 1:
The patent optimizes the Cr content parameter within specific ranges (0.1-5 mass%) and adjusts the Fe-Cr-O ratio to achieve the desired balance between heat reflection and weather resistance, avoiding excessive chrome content that causes deterioration
Solution Approach 2:
The patent applies different pigment compositions to different layers of the decorative sheet, with specific Fe-Cr-O pigment formulations used in the base coat and pattern layers to achieve localized heat insulation while maintaining overall weather resistance
3Reliability
If organic pigments like perylene black or azomethine-azo-based resin are used, then weather-resistant contact is improved, but covering power and coloring power are reduced making muted color design difficult
Solution Approach 1:
The patent combines inorganic Fe-Cr-O pigments with resin binders to create a composite pigment system that achieves both the covering power of inorganic pigments and the weather resistance of organic pigments
Solution Approach 2:
The patent adjusts the pigment concentration, particle size distribution, and resin-to-pigment ratio to optimize both covering power and weather-resistant contact simultaneously
4Illumination intensity
If the decorative layer is thickened to achieve muted color design with organic pigments, then design quality is improved, but weather-resistant contact deteriorates
Solution Approach 1:
The patent optimizes the decorative layer thickness parameter within the range of 5-20 μm, which is thinner than conventional thickened layers, achieving muted colors through controlled pigment concentration and optical interference rather than excessive thickness
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 solution effectively achieves heat-insulating performance, weather-resistant contact, and design with muted colors, making it suitable for applications exposed to direct sunlight, such as exterior parts and window frames.
Implementation Method 1
the decorative layer contains a composite oxide containing at least manganese and has a thickness of 0.7 to 13 μm... effectively achieves heat-insulating performance
Implementation Method 2
the surface protective layer constitutes the outermost layer of the decorative sheet... effectively achieves weather-resistant contact
Implementation Method 3
A decorative member including an adherend and the decorative sheet according to the above item [1] or [2], with the adherend and the base sheet of the decorative sheet facing each other
Data Source
Figure 1~2
AI summary
The present invention aims to provide a decorative sheet exhibiting excellent heat-insulating performance, weather-resistant contact, and design with muted colors, and a decorative member including the decorative sheet. The present invention provides a decorative sheet having a lightness value of 55 or less and including: a base sheet; a decorative layer; and a surface protective layer, wherein the decorative layer contains a composite oxide containing at least manganese and has a thickness of 0.7 to 13 µm. The present invention also provides a decorative member including the decorative sheet.