Ink Jet Printing Set with Surface Tension Control to Reduce Bleeding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current textile printing methods using ink jet technology face challenges in reducing bleeding, improving graininess, and enhancing color developability due to limitations in the surface tension of treatment and ink jet ink compositions.
Innovation Solution
A set comprising a treatment solution with organopolysiloxane particles, an ink jet ink composition with a pigment, and a reaction solution with an aggregating agent, where the static surface tension of the reaction solution is set between 25 to 40 mN/m, lower than that of the ink jet ink composition and treatment solution, to control aggregability and wet-spreading, and the treatment solution's surface tension is equal to or higher than the ink jet ink composition's to ensure proper coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the surface tension of the treatment solution is reduced to improve wet-spreading, then the wet-spreading performance is improved, but the coverage and color developability deteriorate
Solution Approach 1:
The patent applies parameter changes by carefully controlling the surface tension of the treatment solution to be equal to or higher than the ink jet ink composition (γts≥γii). This parameter optimization prevents excessive wet-spreading while maintaining adequate coverage and color developability, resolving the contradiction between wet-spreading performance and coverage quality.
Solution Approach 2:
The patent uses a composite treatment solution containing organopolysiloxane particles (0.1-10 mass%) combined with other surfactants and additives. This composite formulation allows fine-tuning of surface tension properties to achieve the optimal balance between wet-spreading and coverage, where the organopolysiloxane particles provide controlled surface activity without causing excessive spreading.
2Reliability
If the surface tension of the reaction solution is reduced to enhance aggregability, then the bleeding reduction is improved, but the graininess and color developability worsen
Solution Approach 1:
The patent applies parameter changes by optimizing the surface tension of the reaction solution to be within 25-40 mN/m, which is lower than the ink jet ink composition but not excessively low. This controlled parameter range enables effective aggregability for bleeding reduction while maintaining adequate graininess and color developability, resolving the contradiction between these properties.
Solution Approach 2:
The reaction solution acts as an intermediary between the ink jet ink composition and the treatment solution. By controlling its surface tension to be intermediate (lower than ink but not too low), it facilitates controlled aggregation of ink components to reduce bleeding while the treatment solution subsequently restores coverage and color properties, mediating the contradiction between bleeding reduction and image quality.
3Manufacturing precision
If organopolysiloxane is added to the treatment solution to improve color developability, then the color developability is enhanced, but the surface tension control and bleeding resistance worsen
Solution Approach 1:
The patent applies parameter changes by precisely controlling the concentration of organopolysiloxane particles within 0.1-10 mass% in the treatment solution. This optimized concentration range enhances color developability through improved light scattering and surface coverage while maintaining adequate surface tension control and bleeding resistance, resolving the contradiction between these properties.
Solution Approach 2:
The patent creates a composite treatment solution combining organopolysiloxane particles with other surfactants, dispersants, and additives. This composite formulation allows the organopolysiloxane to provide color developability enhancement through its optical properties while the other components maintain surface tension control and bleeding resistance, resolving the contradiction through synergistic material combination.
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 configuration effectively reduces bleeding, improves graininess, and enhances color developability by controlling the surface tension relationships between the solutions, allowing for better ink retention and image quality on fabrics.
Implementation Method 1
a reaction solution that contains an aggregating agent causing aggregation of a component of the ink jet ink composition
Implementation Method 2
a treatment solution composition that contains particles containing organopolysiloxane
Implementation Method 3
where (a static surface tension (mN/m) of the reaction solution) (a static surface tension (mN/m) of the ink jet ink composition)
Implementation Method 4
controlling the surface tension relationships between the solutions, allowing for better ink retention
Data Source
AI summary
A set according to an embodiment of the present disclosure includes a treatment solution composition that contains particles containing organopolysiloxane, and water, an ink jet ink composition that contains a pigment and water, and a reaction solution that contains an aggregating agent causing aggregation of a component of the ink jet ink composition, and water. A relation between a static surface tension (mN/m) of the reaction solution, a static surface tension (mN/m) of the ink jet ink composition, and a static surface tension (mN/m) of the treatment solution composition satisfies (the static surface tension of the reaction solution)<(the static surface tension of the ink jet ink composition)≤(the static surface tension of the treatment solution composition). The static surface tension of the reaction solution is from 25 to 40 mN/m. The treatment solution composition, the ink jet ink composition, and the reaction solution are discharged by an ink jet method and used.