Wet-On-Wet Textile Digital Printing With Acrylic Latex Base Coating
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Solution Overview
Problem
Current digital printing technologies for synthetic resin textiles face issues with ink penetration, image quality degradation, and poor adhesion, leading to challenges in producing high-quality, durable images on woven textile materials, especially when exposed to elevated temperatures during the printing process.
Innovation Solution
A digital printing system utilizing a base application comprising an aqueous acrylic latex material, acrylic resin dispersions, coalescing agents, and optional aziridine compounds, applied using an inkjet printer, which allows for ink image curing without intermediate drying, preventing dye migration and enhancing adhesion and image durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If digital printing inks are applied to synthetic resin textiles without intermediate drying, then production time is reduced, but ink penetration into fibers increases degrading image quality
Solution Approach 1:
The patent applies a base coating composition to the textile material before digital printing. This base coating creates a receptive layer that allows subsequent ink application without requiring intermediate drying, thereby maintaining high productivity while preventing excessive ink penetration and preserving image quality.
Solution Approach 2:
The base coating composition acts as an intermediary layer between the textile fibers and the digital printing ink. This intermediate layer controls ink absorption and penetration, allowing rapid printing without compromising image quality by preventing the ink from penetrating too deeply into the fibers.
2Reliability
If elevated temperatures are used to accelerate ink curing, then image durability is improved, but textile dye migration increases degrading image quality
Solution Approach 1:
The patent modifies the curing process by using a base coating composition that enables effective curing at lower temperatures. This parameter change prevents dye migration and maintains image quality while still achieving durable ink adhesion through the specialized composition containing acrylic resin, coalescing agents, and other functional components.
3Reliability
If screen-printing is used to print images on textiles, then image adhesion is improved, but production cost increases for small quantities
Solution Approach 1:
The patent replaces the mechanical screen-printing system with a digital printing system that uses a specially formulated base coating composition. This substitution eliminates the need for expensive screen preparation and makes the process economically viable for small production runs while maintaining good image adhesion through the chemical properties of the base coating.
4Manufacturing precision
If thick layers of ink are deposited onto textiles, then image coverage is improved, but fabric feel deteriorates
Solution Approach 1:
The base coating composition contains porous or absorptive materials that allow thin layers of digital printing ink to achieve full image coverage. The porous structure of the base coating absorbs and distributes the ink evenly, providing complete coverage without requiring thick ink layers that would deteriorate fabric feel.
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 system enables efficient, economical, and high-quality image printing on synthetic resin textiles with improved washability and colorfastness, maintaining image vividness and brightness even after multiple washings and dry cleaning cycles, without the need for excessive heat, thus reducing energy consumption and production time.
Implementation Method 1
A base application is applied to at least a portion of the woven textile material... An ink image is printed onto at least a portion of the textile material containing the base application with one or more digital inks using an inkjet printer
Implementation Method 2
The base application comprises between about 30% to about 70% by weight of an aqueous acrylic latex material; between about 2.5% to about 20% by weight of one or more acrylic resin dispersions
Implementation Method 3
between about 5% to about 20% by weight of one or more coalescing agents
Data Source
AI summary
Compositions for and methods of digitally printing an ink image onto a woven textile material are provided. A base application is applied to the surface of a woven textile material, especially one comprising synthetic resin fibers prior to application of an ink image layer. The base application comprises an acrylic latex material that is formulated to be printed on with a digital ink while still wet, thereby eliminating the need for an intermediate drying cycle in between base application deposit and printing of the ink image.