Decorative Sheet Surface Layer Matte Effect
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Solution Overview
Problem
Existing decorative sheets fail to achieve sufficient matte effects and uniform asperities, leading to poor appearance and low glossiness.
Innovation Solution
A decorative sheet comprising a base and a surface layer with an ultraviolet-cured layer and an excimer light-cured layer, containing urethane acrylate and a vinyl chloride-vinyl acetate copolymer, with a mass ratio of 100:2 to 100:60, promoting uniform asperities and low glossiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If silica particles are merely mixed in the clear layer, then the decorative sheet contains inorganic particles, but a sufficient matte effect cannot be obtained and low glossiness is hardly exhibited
Solution Approach 1:
The invention changes the chemical composition parameters of the surface layer by incorporating vinyl chloride-vinyl acetate copolymer alongside urethane acrylate, with the copolymer content controlled at 2-60 parts by mass per 100 parts by mass of urethane acrylate. This compositional parameter change enables the surface layer to form uniform asperities and achieve sufficient matte effect that cannot be obtained by merely mixing silica particles in the clear layer.
2Ease of manufacture
If excimer light irradiation is merely performed without mixing silica particles in the clear layer, then the process is simplified, but non-uniform asperities are formed in the clear layer and appearance is degraded
Solution Approach 1:
The invention uses a composite material system consisting of urethane acrylate and vinyl chloride-vinyl acetate copolymer in the surface layer. This composite material formulation, when subjected to excimer light irradiation, produces uniform asperities across the surface, avoiding the non-uniform asperity formation that occurs with simple clear layers containing only silica particles.
3Manufacturing precision
If the surface layer contains high content of vinyl chloride-vinyl acetate copolymer, then uniform asperities and low glossiness are achieved, but the composition complexity increases
Solution Approach 1:
The invention optimizes the compositional parameters by controlling the vinyl chloride-vinyl acetate copolymer content within a specific range (2-60 parts by mass per 100 parts by mass of urethane acrylate). This parameter optimization achieves uniform asperities and low glossiness while managing composition complexity, as the copolymer content is precisely controlled to balance performance and formulation simplicity.
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 provides a decorative sheet with uniform asperities across the entire surface, achieving low glossiness and excellent appearance.
Implementation Method 1
a surface layer provided on the base. The surface layer includes an ultraviolet-cured layer provided on a surface of the base and an excimer light-cured layer provided on a surface of the ultraviolet-cured layer
Data Source
AI summary
A decorative sheet includes a base and a surface layer provided on the base. The surface layer includes an ultraviolet-cured layer provided on a surface of the base and an excimer light-cured layer provided on a surface of the ultraviolet-cured layer. The surface layer contains urethane acrylate and a vinyl chloride-vinyl acetate copolymer, and the mass ratio between the urethane acrylate and the vinyl chloride-vinyl acetate copolymer in the surface layer is the urethane acrylate:the vinyl chloride-vinyl acetate copolymer=100:2 to 100:60.