Textile printing method, dyeing apparatus, textile printing ink, and treatment ink
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Solution Overview
Problem
Existing textile printing methods using inkjet inks face issues with ink smearing due to insufficient water-soluble compounds, leading to reduced coloring material concentration and difficulty in removing polymer compounds from fabrics, which hampers high-quality dyeing.
Innovation Solution
A method involving a textile printing ink and a treatment ink, both containing UV-curable compounds, readily water-soluble compounds, and solvents, where the treatment ink is applied first to prevent smearing and the auxiliary in the treatment ink helps fix the coloring material, allowing for increased UV-curable compound proportions and efficient removal of the cured resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the proportion of water-soluble compound (UV-curable monomer or oligomer) is increased to prevent ink smearing, then ink smearing is suppressed, but the proportion of coloring material to ink's total weight is reduced and the polymer compound becomes difficult to remove from fabric
Solution Approach 1:
The patent changes the chemical parameters of the water-soluble compound by specifying functional groups (carboxyl, hydroxyl, or amino groups) and controlling the proportion within 5-50% by weight. This optimization allows sufficient viscosity increase to prevent smearing while maintaining removable polymer compounds and adequate coloring material concentration.
Solution Approach 2:
The patent creates a composite ink formulation combining UV-curable compounds (monomers or oligomers with specific functional groups) with coloring materials and solvents. This composite approach allows the water-soluble compound to provide anti-smearing properties through controlled polymerization while the specific chemical composition ensures the polymer remains removable and coloring material concentration is maintained.
2Object-affected harmful factors
If the proportion of water-soluble compound (UV-curable monomer or oligomer) is increased to prevent ink smearing, then ink smearing is suppressed, but the polymer compound becomes entangled with fabric fibers and difficult to remove
Solution Approach 1:
The patent optimizes the chemical parameters of the UV-curable compound by selecting specific functional groups (carboxyl, hydroxyl, or amino groups) and controlling the proportion within 5-50% by weight. This parameter optimization ensures the polymer compound forms a removable film that prevents smearing during drying but does not become permanently entangled with fabric fibers, facilitating easy removal in subsequent washing processes.
3Object-affected harmful factors
If the proportion of UV-curable compound is increased to increase ink viscosity and prevent smearing, then ink smearing is suppressed, but the proportion of coloring material in the ink is reduced
Solution Approach 1:
The patent optimizes the proportion of UV-curable compound within 5-50% by weight and selects compounds with specific functional groups that provide sufficient viscosity increase at these controlled levels. This parameter optimization prevents ink smearing while maintaining adequate coloring material proportion for high-quality dyeing.
Solution Approach 2:
The patent formulates a composite ink system where UV-curable compounds (monomers or oligomers), coloring materials, and solvents work synergistically. The specific composition allows the UV-curable compound to provide necessary viscosity and anti-smearing properties while preserving sufficient coloring material concentration for effective fabric dyeing.
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
This approach effectively suppresses ink smearing, increases the concentration of coloring material on the fabric, and facilitates high-quality dyeing by ensuring the UV-curable resin is adequately stripped off, thus improving the overall dyeing process.
Implementation Method 1
an UV-curable compound polymerizable by ultraviolet light into a water-soluble, UV-curable resin... irradiating the textile printing ink applied to the fabric with ultraviolet light
Data Source
AI summary
Provided is a textile printing method that may effectively suppress the risk of ink smearing and that may allow a cured water-soluble, UV-curable resin to be adequately stripped off a fabric so as to dye the fabric in high quality color. A textile printing method includes a pretreatment step of discharging a treatment ink from an inkjet head for treatment toward a fabric to apply the treatment ink to the fabric; a dyeing step of discharging a textile printing ink from an inkjet head for textile printing toward the fabric to apply the textile printing ink to the fabric. In the dyeing step and the pretreatment step, the textile printing ink and the treatment ink are irradiated with ultraviolet light after a respective one of the inks is applied to the fabric.