UV-Curable Ink Composition for Plastic Adhesion and Waterproof Films
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Solution Overview
Problem
Conventional ultraviolet-curable ink compositions for inkjet printing on plastic materials lack sufficient adhesiveness, flexibility, and waterproof properties of the coating film.
Innovation Solution
The ink composition incorporates specific polymerization components such as polyfunctional amine-modified oligomers, nitrogen-containing monomers, aromatic ring-containing monomers, and polyfunctional monomers, along with a hydroxyl group-containing resin, to enhance adhesiveness, flexibility, and waterproof properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ultraviolet-curable ink composition is used, then quick drying and solvent-free properties are achieved, but adhesiveness to plastic base material is insufficient
Solution Approach 1:
The patent modifies the chemical composition parameters of the ink by incorporating specific functional monomers (amine-modified oligomers with epoxy groups, nitrogen-containing monomers, and aromatic ring-containing monomers) to enhance adhesiveness to plastic substrates while maintaining UV curability
Solution Approach 2:
The ink uses a composite polymerization system combining multiple monomer types (epoxy-amine, nitrogen-containing, aromatic) with photopolymerization initiators to achieve both quick drying and improved adhesiveness simultaneously
2Reliability
If conventional ink composition is used, then UV curability is achieved, but flexibility and waterproof property of coating film are insufficient
Solution Approach 1:
The patent adjusts the molecular weight, functional group density, and composition ratios of monomers to optimize the balance between coating film flexibility, waterproofness, and UV curability
Solution Approach 2:
The ink formulation uses different monomer components with specific local functions: amine-modified oligomers for adhesion, nitrogen-containing monomers for flexibility, and aromatic ring-containing monomers for waterproofing, creating a coating with differentiated local properties
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 composition achieves excellent adhesiveness to plastic materials, forming a coating film with flexibility and waterproof properties, improving the overall performance of the printed image.
Implementation Method 1
ultraviolet-curable inkjet printing
Data Source
AI summary
Provided is an ink composition for ultraviolet-curable inkjet printing comprising polymerization components, a resin component, and a photopolymerization initiator, wherein the polymerization components include (A) a polyfunctional amine-modified oligomer, (B) a nitrogen-containing monomer, (C) an aromatic ring-containing monomer, and (D) a polyfunctional monomer, wherein the resin component includes a hydroxyl group-containing resin, wherein (A) comprises an acrylated amine compound having two photopolymerizable functional groups and two amino groups in a molecule, wherein (B) comprises vinyl caprolactam, wherein (C) comprises benzyl acrylate and phenoxyethyl acrylate, wherein (D) comprises at least one of propoxylated neopentyl glycol diacrylate, dipropylene glycol diacrylate, or 1,6-hexanediol diacrylate, wherein a content of (A) is 0.1 to 13.0% by mass, wherein a content of (C) is 35.0 to 75.0% by mass, wherein a content of (D) is 2.0 to 16.0% by mass, and wherein the hydroxyl group-containing resin includes a ketone resin having a hydroxyl group.