Method for producing discoloring body
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Solution Overview
Problem
Existing discolorable laminates struggle to achieve both high glossiness and durability against scratching, while maintaining enjoyable color change due to water adhesion.
Innovation Solution
A discoloring body structure comprising a supporting body, a porous layer with low refractive index pigment, and a glossy resin layer (either brilliant or translucent) with an occupancy area ratio of 1% to 95% on a 1 cm square, enhancing glossiness and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a porous layer with low refractive index pigment is used for discoloration, then color change due to water adhesion is achieved, but glossiness is difficult to express
Solution Approach 1:
The invention combines a porous layer with low refractive index pigment and a glossy resin layer to create a composite structure. The porous layer provides the discoloration effect when water is applied, while the glossy resin layer (either brilliant or translucent) is superimposed to provide the desired glossiness. This composite material approach allows both the color change functionality and the aesthetic glossiness to coexist without compromising either property.
2Illumination intensity
If brilliant fine pieces are fixed on the porous layer to enhance brilliance, then visual brilliance is achieved, but uniform brilliance is difficult due to overlapping and peeling occurs with rubbing
Solution Approach 1:
The invention replaces the fragile brilliant fine pieces with a glossy resin layer that is integrated into the laminate structure. This resin layer provides the desired brilliance and glossiness without the peeling and overlapping problems of discrete fine pieces. The resin layer is applied in a controlled manner to ensure uniform distribution and strong adhesion to the porous layer, making it resistant to rubbing and scratching while maintaining the visual brilliance effect.
3Reliability
If a glossy resin layer is formed to maintain glossiness, then durability against scratching is improved, but the color change effect may be reduced
Solution Approach 1:
The invention uses a glossy resin layer with specific optical properties (brilliant or translucent) that allows light to interact with the underlying porous layer. The resin layer is designed to be transparent or translucent enough to permit the color change effect to manifest through it when water is applied to the porous layer. Simultaneously, the resin layer provides the necessary glossiness and scratch resistance on the surface. The occupancy area ratio control ensures that the resin layer does not completely obscure the discoloration effect while providing sufficient protection and shine.
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 maintains glossiness and durability against scratching, enabling repeated color changes and improved applicability in various fields such as toys, decorations, and design.
Implementation Method 1
This porous layer is made transparent by absorbing liquid such as water and has excellent concealability in a dry state and transparency in a liquid absorption state, and thus, the discolorable laminate can realize enjoyable color change due to adhesion of water
Data Source
AI summary
[Problems] Provided is a discoloring body which is discolored by application of water and has high glossiness and is excellent in applicability to various fields such as a toy field, a decoration field, and a design field.[Solution] A discoloring body including a supporting body, a porous layer in which a low refractive index pigment is fixed in a dispersed state by way of a binder resin, and a glossy resin layer, in which an occupancy area ratio of the glossy resin layer is 1% to 95% with respect to a 1 cm square at any position in the porous layer.