UV-Curable Ink Composition for High-Resolution Steel Plate Printing
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Solution Overview
Problem
Conventional inkjet printing on steel plates faces challenges with ink dispensability, adhesion, and hardness, particularly on non-absorbent surfaces, and requires solvents for UV-curable resin solutions, limiting high-resolution and high-hardness applications.
Innovation Solution
An ink composition comprising a linear acrylate-based oligomer, reactive acrylate-based monomer, UV-curable initiator, and inorganic particles, with specific weight ratios and additives, is used for inkjet printing on steel plates, ensuring low viscosity, excellent adhesion, and high hardness without solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional UV-curable resin solution is used for inkjet printing on steel plates, then high resolution and high hardness can be achieved, but the high viscosity makes it difficult to dispense and apply in the inkjet printing process
Solution Approach 1:
The patent modifies the chemical composition parameters of the UV-curable resin solution by incorporating specific oligomers (epoxy acrylate, urethane acrylate), monomers, and inorganic particles in controlled ratios. This composition adjustment reduces the viscosity of the resin solution to a range suitable for inkjet dispensing while preserving its UV-curable properties and final hardness, thereby resolving the contradiction between manufacturability and ease of operation
Solution Approach 2:
The patent creates a composite UV-curable ink composition by combining organic resins (oligomers and monomers) with inorganic particles. This composite structure provides both the flow characteristics needed for inkjet printing and the hardness required for the final coating, simultaneously addressing printing resolution and dispensability requirements
2Strength
If a conventional UV-curable resin solution is used for coating steel plates, then high hardness can be achieved, but the high viscosity results in poor applicability and low productivity in inkjet printing
Solution Approach 1:
The patent adjusts the viscosity parameter of the UV-curable resin solution through controlled composition design, achieving a balance between hardness and flowability. The modified resin solution can be efficiently dispensed by inkjet technology while maintaining the ability to form hard, durable coatings after UV curing, thereby improving both productivity and coating quality
Solution Approach 2:
The patent applies different functional components at different stages: the resin composition is optimized for low viscosity during the printing stage to ensure high productivity, while the same composition is formulated to achieve high hardness after UV curing. This local optimization of material properties at different process stages resolves the contradiction between workability and hardness
3Productivity
If conventional inkjet ink is used on steel plates, then printing can be performed, but the steel plate surface lacking absorptiveness results in poor printability and adhesion
Solution Approach 1:
The patent introduces an intermediary UV-curable resin composition that acts as a bonding layer between the non-absorbent steel plate surface and the printed pattern. This resin composition adheres to the metal surface and provides anchoring points for the ink, ensuring strong adhesion even on surfaces that lack natural absorptiveness, thereby resolving the contradiction between printability and adhesion reliability
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 ink composition enhances inkjet printing on various metal surfaces by improving adhesion, hardness, and productivity, enabling high-resolution and environmentally friendly production with reduced defect rates and solvent use.
Implementation Method 1
an ultraviolet curable initiator present in an amount of 0.1% to 15% by weight
Data Source
AI summary
Provided is an ink composition for an inkjet print steel plate, an inkjet print steel plate using the same, and a method for producing an inkjet print steel plate. The ink composition comprises: a linear acrylate-based oligomer; a reactive acrylate-based monomer; an ultraviolet curable initiator; at least one selected from the group consisting of a dye and a pigment; and at least one selected from the group consisting of an antioxidant, an antifoaming agent, and a dispersant.