Inkjet textile-printing composition set and method for inkjet textile printing
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Solution Overview
Problem
Existing ink jet textile printing technologies fail to achieve a balance between superior feel and texture, and fastness to rubbing, with known compositions either prioritizing fastness at the expense of feel and texture, or vice versa.
Innovation Solution
A set of compositions for ink jet textile printing comprising an ink composition and a coating composition, where the ink composition contains a pigment, resin particles, and water, and the coating composition contains resin particles and water. The resin particles in the ink composition include specific resins with crosslinking groups, and the Young's modulus of the dried films of both compositions are carefully balanced to achieve optimal results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coating composition with high Young's modulus is used to improve fastness to rubbing, then fastness to rubbing is improved, but feel and texture deteriorate
Solution Approach 1:
The patent applies parameter changes by precisely controlling the Young's modulus of the coating composition within the range of 100-500 MPa. This specific parameter range optimizes the balance between fastness to rubbing and feel/texture, resolving the contradiction by finding the optimal value rather than simply increasing or decreasing the property.
Solution Approach 2:
The patent uses composite materials by combining specific resin types (polyester resin, polyurethane resin, acrylic resin) in defined proportions within the coating composition. This composite approach allows the coating to simultaneously achieve high fastness to rubbing through crosslinking mechanisms while maintaining acceptable feel and texture through the synergistic effects of different resin components.
2Ease of operation
If a coating composition with low Young's modulus is used to improve feel and texture, then feel and texture are improved, but fastness to rubbing deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the Young's modulus of the coating composition within the range of 100-500 MPa. This specific parameter range optimizes the balance between fastness to rubbing and feel/texture, resolving the contradiction by finding the optimal value rather than simply increasing or decreasing the property.
Solution Approach 2:
The patent uses composite materials by combining specific resin types (polyester resin, polyurethane resin, acrylic resin) in defined proportions within the coating composition. This composite approach allows the coating to simultaneously achieve high fastness to rubbing through crosslinking mechanisms while maintaining acceptable feel and texture through the synergistic effects of different resin components.
3Reliability
If resin particles with crosslinking groups are added to improve adhesion and fastness, then fastness to rubbing is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by specifying the crosslinking group content within the range of 0.1-10 mmol/g. This controlled parameter approach ensures sufficient crosslinking for fastness to rubbing while avoiding excessive crosslinking that would complicate manufacturing and potentially degrade other properties.
Solution Approach 2:
The patent uses composite materials by combining specific resin types (polyester resin, polyurethane resin, acrylic resin) in defined proportions within the coating composition. This composite approach allows the coating to simultaneously achieve high fastness to rubbing through crosslinking mechanisms while maintaining acceptable feel and texture through the synergistic effects of different resin components.
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 proposed compositions achieve a printing that is superior in both feel and texture, and fastness to rubbing, by carefully controlling the Young's modulus of the dried films of the ink and coating compositions, thereby enhancing adhesion and durability without compromising tactile quality.
Implementation Method 1
the resin particles contained in the ink composition contain a resin having at least one crosslinking group and the crosslinking group includes a silanol group
Data Source
Figure 1
AI summary
A set of compositions for ink jet textile printing that gives a printing superior in feel and texture and fastness to rubbing is provided. The set of compositions for ink jet textile printing includes an ink composition and a coating composition, the ink composition containing a pigment, resin particles, and water, and the coating composition containing resin particles and water. The resin particles contained in the ink composition contain any of a urethane resin, a polycarbonate resin, an acrylic resin, and a styrene resin. The amount of the resin particles in the ink composition is from 1 to 5 parts by mass on a solids basis per part by mass of the pigment on a solids basis. The Young's modulus of dried film of the ink composition is from 1 to 25 MPa, and that of dried film of the coating composition is 50 MPa or less and higher than that of dried film of the ink composition.