Foaming promotion liquid, manufacturing method for manufacturing recorded product having three-dimensional image, and manufacturing apparatus for manufacturing recorded product having three-dimensional image
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Solution Overview
Problem
Existing methods for forming three-dimensional images with foaming layers face challenges in achieving sufficient foaming height at lower heating temperatures, leading to insufficient protrusion and potential peeling of the foaming layer from the base material.
Innovation Solution
A foaming promotion liquid comprising a good solvent and a poor solvent for polyacrylonitrile copolymer, with a mass ratio of 20:80 to 90:10, is applied to a recording medium with a foaming layer containing polyacrylonitrile copolymer particles, allowing for controlled softening and foaming at lower temperatures, ensuring sufficient foaming height without excessive shell layer softening or boiling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating temperature is reduced to prevent shell layer opening and maintain foaming layer integrity, then reliability is improved, but foaming height is insufficient
Solution Approach 1:
The invention changes the chemical composition parameters of the foaming layer by incorporating a specific copolymer (acrylonitrile-vinylidene chloride copolymer) with controlled polymerization ratios (acrylonitrile 30-70 wt%, vinylidene chloride 30-70 wt%). This parameter change modifies the shell layer's thermal and mechanical properties, allowing it to maintain integrity at lower heating temperatures while still achieving sufficient foaming height through controlled gas expansion.
Solution Approach 2:
The invention uses a composite material system consisting of the copolymer shell layer containing a foaming agent (such as carbon dioxide or organic compounds). The composite structure combines the mechanical strength of the copolymer with the expansion capability of the foaming agent, enabling the foaming layer to achieve both high reliability and sufficient foaming height without requiring excessive heating temperatures that would cause shell opening.
2Length of moving object
If heating temperature is increased to achieve sufficient foaming height, then protrusion is improved, but shell layer opening occurs and foaming layer integrity deteriorates
Solution Approach 1:
The invention modifies the thermal decomposition characteristics of the foaming layer by selecting a copolymer with specific glass transition temperature and melting point properties. The acrylonitrile-vinylidene chloride copolymer is designed to decompose and release gas at a controlled temperature range, achieving sufficient foaming height while preventing premature shell opening that would occur with conventional polymers at higher temperatures.
Solution Approach 2:
The invention utilizes the phase transition properties of the copolymer and foaming agent system. The copolymer undergoes a controlled phase transition from solid to a softened state at a specific temperature range, enabling the trapped gas to expand and form protrusions. This phase transition occurs at lower temperatures than conventional materials, preventing shell layer opening while achieving the desired foaming height and maintaining foaming layer integrity.
3Ease of manufacture
If conventional foaming materials are used, then manufacturing process is simple, but foaming height is insufficient at lower heating temperatures
Solution Approach 1:
The invention changes the material parameters by using a copolymer system that inherently provides sufficient foaming height at lower heating temperatures. The acrylonitrile-vinylidene chloride copolymer with controlled composition ratios offers improved thermal response characteristics, allowing the foaming process to occur effectively at reduced temperatures while maintaining manufacturing process simplicity through direct application and heating without complex multi-step procedures.
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 enables the formation of three-dimensional images with sufficient foaming height even at lower heating temperatures, preventing shell layer opening and maintaining the integrity of the foaming layer, thus enhancing the visual quality and stability of the image.
Implementation Method 1
a good solvent for polyacrylonitrile copolymer and a poor solvent for the polyacrylonitrile copolymer, wherein a mass ratio of an amount of the good solvent contained in the foaming promotion liquid to an amount of the poor solvent contained in the foaming promotion liquid is 20:80 to 90:10
Implementation Method 2
a good solvent for polyacrylonitrile copolymer and a poor solvent for the polyacrylonitrile copolymer, wherein a mass ratio of an amount of the good solvent contained in the foaming promotion liquid to an amount of the poor solvent contained in the foaming promotion liquid is 20:80 to 90:10
Implementation Method 3
heating the recording medium to which the foaming promotion liquid is applied, thereby forming a three-dimensional image
Implementation Method 4
the good solvent and the poor solvent both have boiling points higher than a heating temperature at which a recording medium is heated to form a three-dimensional image
Data Source
AI summary
A manufacturing method for manufacturing a recorded product having a three-dimensional image, the manufacturing method including applying a foaming promotion liquid to a recording medium having a base material and a foaming layer provided on the base material and containing a foaming particle having a shell layer including polyacrylonitrile copolymer, and heating the recording medium to which the foaming promotion liquid is applied. The foaming promotion liquid includes a good solvent for the polyacrylonitrile copolymer and a poor solvent for the polyacrylonitrile copolymer.