UV-Curable Inkjet Ink Composition for Rubfast Yet Separable Images
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inkjet inks do not provide sufficient rubfastness and image separability from substrates, which are crucial for applications requiring durable and easily removable images.
Innovation Solution
An active energy ray curable inkjet ink formulation comprising bifunctional (meth)acrylate with a linear or branched alkylene group, silicone-based surfactant with a (meth)acryloyl group, and an acrylic resin with a glass transition temperature of 30°C or higher, along with specific ratios and contents of these components, to enhance rubfastness and separability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional inkjet ink formulations are used, then the ink can be applied to substrates, but the image recorded article lacks sufficient rubfastness and image separability
Solution Approach 1:
The patent applies parameter changes by carefully controlling the content of bifunctional (meth)acrylate at 20% by mass or more, and adjusting the glass transition temperature of acrylic resin to 30°C or higher. These specific parameter adjustments optimize the balance between rubfastness and image separability, resolving the technical contradiction between durability and removability
Solution Approach 2:
The patent uses composite materials by combining multiple components including bifunctional (meth)acrylate, silicone-based surfactant with (meth)acryloyl group, coloring agent, and acrylic resin with specific glass transition temperature. This composite formulation achieves both good rubfastness and good image separability that cannot be obtained with single materials
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 formulation achieves high rubfastness and good image separability, allowing images to be easily separated from substrates for reuse, while maintaining ink film integrity and adhesion.
Implementation Method 1
active energy ray curable type ink jet ink
Data Source
AI summary
Provided is an active energy ray curable type ink jet ink containing a bifunctional (meth)acrylate having a linear or branched alkylene group having 4 to 10 carbon atoms, a silicone-based surfactant having a (meth)acryloyl group, a coloring agent, and an acrylic resin having a glass transition temperature of 30° C. or higher. The content of the bifunctional (meth)acrylate with respect to the total mass of the active energy ray curable type ink jet ink is 20% by mass or more. Also provided are applications of the active energy ray curable type ink jet ink.