Ink jet textile printing ink and ink jet textile printing ink set
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Solution Overview
Problem
Existing ink jet textile printing inks face challenges in achieving stable ejection, air bubble removal, and preventing bleeding, particularly when containing water-soluble dyes, due to unsatisfactory surfactant ratios and properties that vary under different conditions.
Innovation Solution
An ink jet textile printing ink formulation incorporating a water-soluble dye, a nonionic surfactant in the range of 0.05% to 3.0% by mass, and an anionic surfactant in 1 ppm to 100 ppm by mass, specifically an aromatic sulfonic acid or its salt, to ensure stable ejection, air bubble removal, and reduced bleeding by balancing surfactant concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nonionic surfactant is added to improve ejection stability, then ejection stability is improved, but air bubbles may occur and antifoaming property deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the concentration range of nonionic surfactant (0.05-3.0% by mass) and anionic surfactant (1-100 ppm by mass). This quantitative parameter optimization resolves the contradiction by finding the optimal balance point where ejection stability is improved while air bubble formation is suppressed.
Solution Approach 2:
The patent uses composite materials by combining both nonionic surfactant and anionic surfactant in specific proportions. This composite approach allows the nonionic surfactant to provide ejection stability while the anionic surfactant suppresses air bubble formation, thereby resolving the contradiction between improved ejection stability and prevented air bubble formation.
2Manufacturing precision
If water-soluble dye is used to achieve high color development, then color development is improved, but ejection stability and air bubble removal deteriorate
Solution Approach 1:
The patent introduces surfactants as intermediary substances that mediate between the water-soluble dye and the ejection process. The surfactants form micelles that solubilize the dye while maintaining ink stability, allowing high color development without compromising ejection stability or air bubble removal.
Solution Approach 2:
The patent applies parameter changes by optimizing the concentration ratios of dye to surfactants. By controlling the surfactant concentrations within specific ranges relative to the dye content, the patent achieves high color development while maintaining reliable ejection stability and air bubble removal properties.
3Productivity
If surfactant concentration is increased to improve wettability and penetration, then penetration is improved, but bleeding in horizontal directions increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the surfactant concentration within a specific range (0.05-3.0% for nonionic, 1-100 ppm for anionic). This optimized parameter range ensures sufficient wettability and penetration into the cloth while preventing excessive spreading that causes bleeding, thereby resolving the contradiction between penetration and bleeding control.
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 ink formulation effectively fills the ink flow channel, facilitates stable ejection, and reduces bleeding, ensuring high-quality textile printing with improved penetration and color density.
Implementation Method 1
a nonionic surfactant with a content in the range of 0.05% by mass to 3.0% by mass relative to the total mass of the ink, and an anionic surfactant in the range of 1 ppm by mass to 100 ppm by mass relative to the total mass of the ink
Implementation Method 2
the anionic surfactant with a specific content helps the ink to fill the ink flow channel and facilitates stable ejection of the ink and removal of air bubbles
Implementation Method 3
it is desirable that ink jet textile printing inks be designed in view of the penetration of the ink applied onto the cloth into the cloth and the spreading or wetting of the ink in horizontal directions
Data Source
AI summary
An ink jet textile printing ink contains at least one water-soluble dye selected from the group consisting of acid dyes, reactive dyes, and direct dyes, a nonionic surfactant with a content in the range of 0.05% by mass to 3.0% by mass relative to the total mass of the ink, and an anionic surfactant with a content in the range of 1 ppm by mass to 100 ppm by mass relative to the total mass of the ink.