Foaming Layer Wettability for Clear 3D Image Relief
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Solution Overview
Problem
Existing methods for forming three-dimensional images using thermal expansion sheets and foamable capsules struggle to achieve clear unevenness in the formed images, with limitations in the permeation and spreading of foam-promoting liquids affecting the quality of the three-dimensional image.
Innovation Solution
A recording medium with a foaming layer containing a foaming material and a binder resin, where the contact angle of water and the ratio of water droplet diameters are optimized to enhance the permeation of a foam-promoting liquid in the depth direction, reducing lateral spreading and improving foamability, allowing for clear unevenness in the three-dimensional image formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thermal expansion sheet or foamable capsules are used to form three-dimensional images, then the image formation process can be completed, but clear unevenness cannot be achieved in the formed image
Solution Approach 1:
The invention changes the surface energy parameters of the foaming layer by controlling the contact angle of water to be 30° or more and 80° or less, and controlling the diameter ratio of water droplets to be 1.3 times or less. These parameter changes enable the foam-promoting liquid to permeate in the depth direction rather than spreading laterally, achieving clear unevenness in the three-dimensional image while maintaining reliable foamability.
2Temperature
If foam-promoting liquid is applied to enhance foaming, then the foaming start temperature is reduced, but the liquid spreads laterally instead of permeating in the depth direction
Solution Approach 1:
The invention changes the surface energy parameters of the foaming layer by controlling the contact angle of water to be 30° or more and 80° or less, and controlling the diameter ratio of water droplets to be 1.3 times or less. These parameter changes enable the foam-promoting liquid to permeate in the depth direction rather than spreading laterally, achieving clear unevenness in the three-dimensional image while maintaining reliable foamability.
3Manufacturing precision
If the contact angle of water to the foaming layer surface is not optimized, then the foam-promoting liquid spreads laterally, but with optimized contact angle the liquid permeates in the depth direction achieving clear unevenness
Solution Approach 1:
The invention changes the surface energy parameters of the foaming layer by controlling the contact angle of water to be 30° or more and 80° or less, and controlling the diameter ratio of water droplets to be 1.3 times or less. These parameter changes enable the foam-promoting liquid to permeate in the depth direction rather than spreading laterally, achieving clear unevenness in the three-dimensional image while maintaining reliable foamability.
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 optimized recording medium and method enable the efficient formation of three-dimensional images with clear unevenness by ensuring the foam-promoting liquid permeates effectively in the depth direction, improving the foamability and adhesion of the foaming material, resulting in enhanced image quality.
Implementation Method 1
a foaming layer being provided on the substrate and containing a foaming material which foams with heat
Implementation Method 2
a contact angle of water to a surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° or more and 80° or less, and a ratio of a diameter of a water droplet 30 seconds after the water is brought into contact with the surface of the foaming layer to a diameter of a water droplet 0.01 seconds after the water is brought into contact with the surface of the foaming layer is 1.3 times or less
Data Source
Figure 1
Figure 2A~2C
AI summary
A recording medium for producing a recorded matter having a three-dimensional image comprises: a substrate; and a foaming layer being provided on the substrate and containing a foaming material which foams with heat and a binder resin. A contact angle of water to a surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° or more and 80° or less, and a ratio of a diameter of a water droplet 30 seconds after the water is brought into contact with the surface of the foaming layer to a diameter of the water droplet 0.01 seconds after the water is brought into contact with the surface of the foaming layer is 1.3 times or less.