Flexible Printed Material Cross-Linking for Thermal and Chemical Resistance
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Solution Overview
Problem
Flexible printed materials are vulnerable to raised temperatures, mechanical wear, and chemicals, lacking sufficient thermal, mechanical, and chemical resistance.
Innovation Solution
A process involving a flexible print substrate with a primer layer and a thermoplastic resin ink layer, where a cross-linking composition is applied to crosslink both the thermoplastic resin and the primer resin, enhancing their cohesion and resistance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible printed material uses conventional printing processes without cross-linking, then the manufacturing process is simple and quick, but the material lacks sufficient thermal, mechanical, and chemical resistance
Solution Approach 1:
The patent applies a cross-linking composition to the printed ink layer before the material is put into service. This preliminary cross-linking action creates a chemically resistant network structure that prevents degradation from heat, mechanical wear, and chemicals, thereby improving reliability without requiring complex post-processing or special printing conditions
Solution Approach 2:
The cross-linking composition changes the chemical parameters of the printed material by forming cross-links between polymer chains. This parameter change transforms the physical and chemical properties of the ink layer, giving it enhanced durability and resistance while maintaining the simplicity of the printing process itself
2Strength
If the ink composition uses thermoplastic resin without cross-linking, then the printing process is straightforward, but the material shows vulnerability to raised temperatures and mechanical wear
Solution Approach 1:
The patent creates a composite structure by combining the thermoplastic resin ink layer with a cross-linking composition. This composite approach maintains the ease of printing the thermoplastic resin while adding cross-linked polymer networks that provide enhanced mechanical strength and cohesion, resolving the contradiction between simplicity and strength
3Reliability
If no cross-linking composition is applied, then the manufacturing process remains simple, but the material lacks sufficient chemical resistance
Solution Approach 1:
The cross-linking composition acts as an intermediary substance that is applied between the printed ink layer and the chemical environment. This intermediary forms a protective cross-linked network that mediates the interaction between chemicals and the printed material, providing chemical resistance without requiring the printing process itself to be complex
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 process results in flexible printed materials with improved thermal, mechanical, and chemical resistance, effectively mitigating the vulnerabilities of previous materials.
Implementation Method 1
depositing a cross-linking composition comprising a cross-linker onto the printed ink composition disposed on the primer such that the thermoplastic resin of the ink composition is crosslinked and the primer resin of the primer is crosslinked
Data Source
AI summary
Described herein is a process for preparing a flexible printed material. The process may comprise providing a flexible print substrate comprising a primer on a surface of the print substrate, the primer comprising a primer resin; printing an ink composition comprising a thermoplastic resin onto the primer on the surface of the print substrate; and depositing a cross-linking composition comprising a cross-linker onto the printed ink composition disposed on the primer such that the thermoplastic resin of the ink composition is crosslinked and the primer resin of the primer is crosslinked.