Ink-jet textile printing pretreatment liquid, ink set, ink-jet textile printing apparatus, and ink-jet textile printing method
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Solution Overview
Problem
Existing ink-jet textile printing methods face challenges in achieving excellent color development while preventing bleeding and deterioration of tactile sensation.
Innovation Solution
An ink-jet textile printing pretreatment liquid containing a specific solvent and resin particles, including a cationic resin with a cationic group, is used to form a stable emulsion that adheres to the textile surface, preventing ink penetration and diffusion, and an ink set with a pigment and binder resin particles is discharged using an ink-jet nozzle to create images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ink-jet textile printing method is used, then printing process can be performed, but color development is poor and bleeding occurs
Solution Approach 1:
The patent applies preliminary action by using a pretreatment liquid containing cationic resin particles (30-150 nm) that are applied to the textile surface before ink deposition. These resin particles form a binding layer that prepares the surface for better ink adhesion and prevents bleeding, thereby improving color development quality while suppressing harmful bleeding effects.
Solution Approach 2:
The cationic resin particles in the pretreatment liquid serve as an intermediary between the textile substrate and the ink components. These particles mediate the interaction by providing binding sites for pigment and binder resin, ensuring proper adhesion and distribution of ink components without causing bleeding.
2Quantity of substance
If ink components penetrate into fabric, then absorption occurs, but tactile sensation deteriorates
Solution Approach 1:
The patent applies local quality by controlling ink component distribution through the pretreatment layer. The cationic resin particles (30-150 nm) create localized binding sites on the textile surface that confine ink components to specific areas, ensuring proper absorption while preventing unwanted penetration that would deteriorate tactile sensation.
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 method effectively forms textile printed matter with excellent color development while suppressing bleeding and tactile sensation deterioration by ensuring the ink components adhere to the surface rather than penetrating the fabric.
Implementation Method 1
The specific resin particle includes a cationic resin having a cationic group
Implementation Method 2
ensuring the ink components adhere to the surface rather than penetrating the fabric
Data Source
AI summary
An ink-jet textile printing pretreatment liquid is discharged by an ink-jet nozzle, and contains a specific solvent and a specific resin particle. The specific solvent contains water and polyvalent alcohol. The specific resin particle contains a cationic resin having a cationic group. A particle size of the specific resin particle is 30 nm or more and 150 nm or less.