Foaming Promotion Liquid for Low-Temperature 3D Image Formation
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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 potential peeling of the foaming layer and inadequate protrusion in three-dimensional images, especially in color printing where black ink application affects visual quality.
Innovation Solution
A foaming promotion liquid containing a good solvent and a poor solvent for polyacrylonitrile copolymer is applied to the foaming layer, with a mass ratio of 20:80 to 90:10, which softens the shell layer of the foaming particles, lowering the foaming start temperature and preventing shell layer holes, allowing for sufficient foaming height even at lower heating temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heating temperature is reduced to improve energy efficiency and safety, then the risk of peeling and safety improve, but the foaming height becomes insufficient
Solution Approach 1:
The invention changes the chemical composition parameters of the foaming layer by introducing a polyacrylonitrile copolymer and controlling the ratio of good solvent to poor solvent (20:80 to 90:10). This chemical parameter change enables the foaming particles to achieve sufficient expansion at lower heating temperatures, resolving the contradiction between reduced heating temperature and sufficient foaming height.
Solution Approach 2:
The invention uses a composite material system consisting of polyacrylonitrile copolymer combined with good solvent and poor solvent. This composite approach creates a synergistic effect where the copolymer structure, when treated with the solvent mixture, achieves optimal foaming properties at lower temperatures, simultaneously improving safety and maintaining foaming height.
2Shape
If black ink is applied to form protruding portions, then the three-dimensional image structure is achieved, but the visual quality of color images deteriorates
Solution Approach 1:
The invention introduces a foaming promotion liquid as an intermediary substance that mediates between the need for three-dimensional structure formation and visual quality maintenance. This liquid, containing the solvent mixture, is applied before heating to promote uniform foaming, eliminating the need for black ink and thus preserving color image quality while achieving the desired protruding structure.
3Manufacturing precision
If a foaming promotion liquid is applied to promote foaming at low temperature, then the foaming height improves, but the liquid may cause shell layer holes if not controlled properly
Solution Approach 1:
The invention precisely controls the concentration ratio parameter of good solvent to poor solvent (20:80 to 90:10 by mass) and the application amount of foaming promotion liquid. This parameter optimization ensures the liquid penetrates sufficiently to promote foaming at low temperatures while maintaining shell layer integrity and preventing hole formation.
Solution Approach 2:
The invention uses the foaming promotion liquid to create a controlled chemical environment that replicates the optimal conditions for shell layer softening without exceeding the threshold that would cause damage. The liquid acts as a controlled copy of the ideal chemical state needed for low-temperature foaming while avoiding the harmful effects of excessive solvent concentration.
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 at reduced heating temperatures, preventing shell layer damage and ensuring uniform penetration of the foaming promotion liquid, thereby maintaining image quality and stability.
Implementation Method 1
a foaming promotion liquid containing a good solvent and a poor solvent for polyacrylonitrile copolymer in a mass ratio of 20:80 to 90:10
Implementation Method 2
softens the shell layer of the foaming particles, lowering the foaming start temperature
Implementation Method 3
heating the recording medium, thereby causing a portion to which the black ink is applied to selectively foam and expand
Implementation Method 4
causing a portion to which the black ink is applied to selectively foam and expand
Data Source
Figure 1
Figure 2
Figure 3A~3C
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.