Multilayer Cork Coating Resolving Scratch and Discoloration Trade-offs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Natural cork materials used in vehicle components are susceptible to discoloration from light and moisture, and have weak scratch and abrasion resistance, which affects their durability and appearance.
Innovation Solution
A multilayer coating film is formed using a color coating film and a clear coating film, comprising specific compositions and thicknesses, to provide adhesion, color, and texture to cork materials, enhancing their light resistance, durability, and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coating is applied to the surface of natural cork to prevent discoloration and enhance durability, then light resistance and scratch resistance are improved, but the surface luxuriousness and natural appearance may be decreased
Solution Approach 1:
The coating system is divided into multiple layers: a color coating layer that provides adhesion and color protection, and a clear coating layer that provides texture and enhanced durability. This segmentation allows each layer to specialize in specific functions, with the color layer protecting against discoloration and the clear layer providing scratch resistance while maintaining surface luxuriousness.
Solution Approach 2:
The patent uses composite coating materials comprising waterborne polyurethane resin, waterborne acrylic resin, and acrylic resin in specific ratios. These composite materials provide both protective properties (scratch resistance, abrasion resistance) and aesthetic properties (gloss, texture) simultaneously, resolving the contradiction between durability and surface luxuriousness.
2Reliability
If a single-layer coating is applied to protect cork from light and moisture, then protection is provided, but the coating cannot simultaneously provide color, texture, and enhanced durability
Solution Approach 1:
The coating system is divided into multiple layers: a color coating layer that provides adhesion and color protection, and a clear coating layer that provides texture and enhanced durability. This segmentation allows each layer to specialize in specific functions, with the color layer protecting against discoloration and the clear layer providing scratch resistance while maintaining surface luxuriousness.
Solution Approach 2:
The multilayer coating structure provides multiple functions simultaneously: the color coating layer provides adhesion and UV protection, while the clear coating layer provides scratch resistance, abrasion resistance, and maintains surface luxuriousness. This multi-functionality is achieved through the synergistic combination of different coating materials and layers.
3Adaptability or versatility
If natural cork is used as a replacement for real wood, then sustainability and environmental benefits are improved, but scratch resistance and abrasion resistance remain weak
Solution Approach 1:
The patent uses composite coating materials comprising waterborne polyurethane resin, waterborne acrylic resin, and acrylic resin in specific ratios. These composite materials provide both protective properties (scratch resistance, abrasion resistance) and aesthetic properties (gloss, texture) simultaneously, resolving the contradiction between durability and surface luxuriousness.
Solution Approach 2:
The coating formulation uses specific parameter ranges: waterborne polyurethane resin (30-50 wt%), waterborne acrylic resin (10-30 wt%), and acrylic resin (10-30 wt%). These parameter changes optimize the balance between flexibility, adhesion, and hardness to achieve scratch resistance while maintaining the natural sustainability of cork material.
Data Source
AI summary
Disclosed are a multilayer coating film made from a natural material and a method of producing the same. The multilayer coating film may be produced by forming a multilayer coating film through formation of a color coating film for providing adhesion and color to a cork on the cork material and a clear coating film for realizing texture and supplementing properties on the color coating film. As such, the multilayer coating film may be made from a natural material to diversify the color and gloss of cork as a natural material, to additionally increase marketability of an interior material and provide various appearance, to prevent discoloration due to light (e.g. UV light.) and water permeation, and to enhance durability against abrasion, scratches and the like.