Dark Fluoropolymer Wire Insulation for High-Contrast UV Laser Marking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing UV laser-markable insulation materials fail to achieve high initial and post-heat aging contrast for dark-colored backgrounds, particularly black or carbon black-based materials, which are desirable for wires and cables.
Innovation Solution
A UV laser-markable dark-colored insulation material comprising fluoropolymer, color pigment, and UV laser-marking additive, such as a mixture of mica, titanium dioxide, and antimony-doped tin oxide, is formulated to produce light-color markings with high initial and post-heat aging contrast on dark-colored backgrounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dark-colored insulation materials (black or carbon black-based) are used, then the insulation material is desirable for wires and cables, but the contrast between laser markings and background insulating material is usually low
Solution Approach 1:
The patent applies composite materials by combining fluoropolymer base material with carbon black pigment and UV laser-marking additives (such as titanium dioxide, zinc oxide, or boron nitride). This composite formulation enables dark-colored insulation material to produce high-contrast light-colored markings when exposed to UV laser, resolving the contradiction between using desirable dark-colored materials and achieving sufficient marking contrast.
Solution Approach 2:
The patent changes the chemical composition parameters of the insulation material by incorporating specific UV laser-marking additives in controlled amounts (typically 1-20 phr). These parameter changes enable the material to respond to UV laser exposure by forming light-colored markings on the dark background, thereby achieving high contrast while maintaining the desirable dark coloration.
2Manufacturing precision
If conventional UV laser-markable insulation materials are used, then marking can be achieved, but initial contrast and post-heat aging contrast are insufficient for dark-colored backgrounds
Solution Approach 1:
The patent optimizes the concentration and type of UV laser-marking additives in the insulation material formulation. By carefully controlling the amount of additives (such as titanium dioxide, zinc oxide, or boron nitride) and their particle characteristics, the material achieves high initial marking contrast that remains stable after heat aging, thus resolving the contradiction between initial contrast and long-term contrast retention.
Solution Approach 2:
The patent creates a composite material system where fluoropolymer, carbon black, and UV laser-marking additives work synergistically. This composite structure ensures that the marking contrast is not only high initially but also maintains its effectiveness after exposure to heat aging conditions, addressing both initial contrast and durability requirements.
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 material achieves initial contrast ratios of at least 70% and maintains high contrast after heat aging, exceeding industry standards for dark-colored insulation materials.
Implementation Method 1
UV laser-marking additive in an amount ranging from 1 to 20 phr
Implementation Method 2
UV laser marking on the surface of the insulation materials
Data Source
AI summary
Laser-markable dark-colored insulation materials that produce light-color marking with remarkably high contrast and durability, when marked with UV laser, are disclosed. Also disclosed are materials, synthesis, and application of the laser-markable insulation materials, and methods of making the insulation materials.