Textile Pigment Printing Composition Set for Wet Rubbing Fastness
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Solution Overview
Problem
Pigment textile printing inks using the ink jet method have inferior wet rubbing fastness and texture compared to dye textile printing, and they maintain a simple process with a low environmental load, requiring improvements in these areas.
Innovation Solution
A recording method involving a softening liquid composition with a high content of softening agents and an ink jet method for attaching a coating liquid composition rich in anionic resin particles, where the softening agent constitutes 60% of non-volatile components and the resin particles constitute 80%, enhancing wet rubbing fastness and color developability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pigment textile printing is used with ink jet method, then the process is simple and environmental load is low, but wet rubbing fastness and texture are inferior
Solution Approach 1:
The patent applies preliminary action by first attaching a softening liquid composition to the fabric before applying the pigment ink. This softening treatment prepares the fabric surface in advance to improve subsequent ink fixation and wet rubbing fastness, allowing the process to remain simple while enhancing performance.
Solution Approach 2:
The patent uses composite materials by combining softening agents (such as silicone oils or fatty acid esters) with pigment particles in a multi-component ink system. This composite approach enhances the wet rubbing fastness and texture of the printed fabric while maintaining the simplicity of the ink jet printing process.
2Ease of manufacture
If pigment textile printing is used with ink jet method, then the process is simple, but texture of printed textile is inferior
Solution Approach 1:
The patent applies parameter changes by modifying the physical and chemical parameters of the ink composition, including using specific pigment particles with controlled size and shape, adding softening agents, and adjusting the viscosity and surface tension of the ink. These parameter optimizations improve the texture and hand-feel of the printed fabric while keeping the ink jet process simple.
3Reliability
If high content of softening agent is used (60% or more), then wet rubbing fastness is improved, but composition complexity increases
Solution Approach 1:
The patent optimizes the composition parameters by setting the softening agent content at 60% or more of non-volatile components, which has been determined to provide sufficient wet rubbing fastness improvement. The composition is simplified by using a limited number of well-selected ingredients with specific functional properties, reducing overall complexity despite the high softening agent content.
4Reliability
If high content of resin particles is used (80% or more), then color developability is improved, but viscosity control becomes difficult
Solution Approach 1:
The patent controls viscosity by carefully selecting and adjusting parameters such as the size distribution of resin particles, the type and amount of dispersants, and the solvent composition. The resin particle content is set at 80% or more of non-volatile components to maximize color developability, while viscosity is maintained within printable ranges through optimized formulation parameters.
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 significantly improves the wet rubbing fastness and color developability of pigment textile printing, maintaining a simple process and low environmental impact.
Implementation Method 1
a softening liquid composition containing a softening agent and water
Implementation Method 2
a coating liquid composition containing anionic resin particles and water
Data Source
AI summary
A recording method including a softening liquid attachment step of attaching a softening liquid composition containing a softening agent and water to a recording medium, and a coating liquid attachment step of attaching a coating liquid composition containing anionic resin particles and water to the recording medium, in which a content of the softening agent is 60% by mass or more with respect to a total amount of non-volatile components in the softening liquid composition, a content of the resin particles is 80% by mass or more with respect to a total amount of non-volatile components in the coating liquid composition, the coating liquid attachment step is performed by an ink jet method, and the softening liquid attachment step is performed by an ink jet method or a spray method.