Inkjet Ink Adhesion to Polymeric Insulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Inkjet inks fail to adhere effectively to polymeric materials like cross-linked polyethylene insulation on electrical wiring, requiring costly pretreatment or post-treatment processes to withstand harsh environmental conditions.
Innovation Solution
An inkjet ink composition comprising a solvent, thermoplastic resin, urethane resin, and two colorants, where the first colorant is solvent black 3 and the second colorant is less oleophilic, allowing the ink to adhere and remain identifiable on polymeric materials without the need for pre- or post-treatment processes, even in harsh environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional inkjet inks are used on polymeric materials, then the ink can be applied to the substrate, but the ink fails to adhere effectively and cannot withstand harsh environmental conditions
Solution Approach 1:
The patent modifies the chemical composition parameters of the ink by incorporating specific resin systems (epoxy, polyester, polyurethane) and adhesion promoters that change the ink's chemical properties to be compatible with non-polar polymeric surfaces. This allows the ink to adhere effectively to polyethylene and similar materials without pretreatment while maintaining resistance to harsh environmental conditions.
Solution Approach 2:
The ink formulation uses a composite approach by combining multiple resin types (epoxy, polyester, polyurethane) with adhesion promoters and specific solvents to create a multi-component system. This composite material structure provides both adhesion to polymeric substrates and durability against environmental factors, resolving the contradiction between adhesion and environmental resistance.
2Reliability
If pretreatment or post-treatment processes are used to improve ink adhesion and durability, then the ink can withstand harsh environments, but processing costs and complexity increase
Solution Approach 1:
The ink formulation is designed to be self-sufficient by incorporating adhesion promoters and durable resin systems directly into the ink composition. This allows the ink to automatically adhere to and protect against harsh environments on polymeric materials without requiring external pretreatment or post-treatment processes, thereby reducing processing complexity while maintaining reliability.
Solution Approach 2:
The adhesion promoters and specialized resins are pre-incorporated into the ink formulation before application. This preliminary preparation of the ink composition ensures that when the ink is applied to the polymeric substrate, it immediately has the necessary adhesion and environmental resistance properties, eliminating the need for separate pretreatment or post-treatment steps.
3Object-affected harmful factors
If the polymeric insulation material is made chemically inert to protect wiring, then the wiring is protected from harsh environments, but the ink cannot adhere to the material
Solution Approach 1:
The ink formulation uses adhesion promoters as intermediary substances that bridge the gap between the chemically inert polymeric insulation and the ink. These adhesion promoters are incorporated into the ink composition and enable the ink to bond to the non-polar polymeric surface without compromising the chemical inertness or protective properties of the polymer itself, thus resolving the contradiction between material protection and ink adhesion.
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 inkjet ink composition provides durable, long-lasting indicia on polymeric materials, reducing processing costs and increasing productivity by adhering to and remaining legible on polymeric insulation even after exposure to high temperatures and chemicals.
Implementation Method 1
an image printed on the surface through the deposition of an inkjet ink, and the image marked in the subsurface portion by diffusion of the first colorant and the second colorant into the polymeric layer
Data Source
AI summary
Inkjet inks that include a solvent, a thermoplastic resin, a urethane resin ,a first colorant, and a second colorant. When printed onto a surface of an article, the first and second colorant migrate into the article, thereby producing a resilient image. Also described methods of applying indicia with the inkjet inks and articles that include an image printed with the inkjet inks.