Textile-Printed Image Layering for Friction and Texture Control
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Solution Overview
Problem
Ink jet textile printing faces challenges with stickiness of the printed image and deterioration of the fabric texture, as existing methods struggle to balance these two factors effectively.
Innovation Solution
A textile-printed image formed product with a pretreatment layer, fixing layer, and overcoat layer, using a pretreatment liquid with a cationic resin, inkjet ink with a fixing resin of low glass transition temperature, and an overcoat layer forming liquid with anionic resin fine particles, which are applied in a specific sequence and dried to achieve optimal adhesion and texture preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ink jet textile printing is performed using conventional methods, then production efficiency is improved, but the textile-printed image becomes sticky and fabric texture deteriorates
Solution Approach 1:
The printed image structure is segmented into multiple functional layers: a fixing layer containing low Tg resin for adhesion, and an overcoat layer containing high Tg resin particles for surface properties. This segmentation allows each layer to perform its specific function independently, resolving the contradiction between production efficiency and stickiness prevention.
Solution Approach 2:
The invention uses composite material composition with two types of resins having different glass transition temperatures. The fixing layer uses resin with Tg of -50°C to 0°C for flexibility and adhesion, while the overcoat layer uses resin particles with Tg of 50°C to 150°C for reduced stickiness. This composite approach maintains production efficiency while eliminating the stickiness problem.
2Productivity
If ink jet textile printing is performed using conventional methods, then production efficiency is improved, but the texture of the fabric deteriorates
Solution Approach 1:
The invention applies local quality by giving different thermal properties to different layers: the fixing layer has low Tg to match fabric flexibility and maintain texture, while the overcoat layer has high Tg to provide durable surface properties. This localized differentiation allows high-speed printing while preserving fabric texture characteristics.
Solution Approach 2:
The composite resin system with differentiated Tg ranges allows the fabric to maintain its natural texture through the low Tg fixing layer, while the high Tg overcoat layer provides the necessary durability for industrial applications, thus resolving the contradiction between productivity and texture stability.
3Object-generated harmful factors
If resin with high glass transition temperature is used in the fixing layer, then stickiness is reduced, but fabric texture deteriorates
Solution Approach 1:
The invention segments the resin functionality into two layers: the fixing layer uses low Tg resin to preserve fabric texture and flexibility, while the overcoat layer uses high Tg resin to reduce stickiness. This segmentation resolves the contradiction by assigning opposite requirements to different spatial locations within the printed image structure.
Solution Approach 2:
Instead of using high Tg resin in the fixing layer as conventionally done, the invention inverts the approach by using low Tg resin there and placing high Tg resin in the overcoat layer. This inversion resolves the contradiction between reducing stickiness and maintaining fabric texture.
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 solution effectively suppresses stickiness and maintains fabric texture integrity by controlling the adhesion amount and friction coefficient, ensuring a difference in bending torque of 0.006 gf·cm or less and average friction coefficient of 0.42 or less, thereby improving production efficiency and product quality.
Implementation Method 1
contains a cationic resin having a weight average molecular weight Mw of 1,000 to 10,000
Implementation Method 2
the inkjet ink comprises a fixing resin having a glass transition temperature Tg of −35° C. or lower
Implementation Method 3
contains anionic resin fine particles having a glass transition temperature Tg of 50° C. or higher
Implementation Method 4
when the textile-printed image formed product and a fabric on which the textile-printed image is not formed are measured with a friction tester KES-SE, a difference in average friction coefficient MIU is 0.42 or less
Data Source
AI summary
A textile-printed image formed product including: a fabric and a textile-printed image formed on the fabric, the textile-printed image including a pretreatment layer, a fixing layer, and an overcoat layer. In the textile-printed image formed product, an adhesion amount of the textile-printed image is 1 g/m2 to 10 g/m2, when the textile-printed image formed product and a fabric on which the textile-printed image is not formed are measured with a friction tester KES-SE, a difference in average friction coefficient MIU is 0.42 or less; and when the textile-printed image formed product and the fabric on which the textile-printed image is not formed are measured with a bending tester KES-FB2-A, a difference in bending torque is 0.006 gf·cm or less.