Stitchbonded Fire-Resistant Fabric Using Melamine and Modacrylic Fibers
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Solution Overview
Problem
Current fire-resistant fabrics used in firefighting clothing are not soft or pliable, and clothing labeled as fire-retardant often uses flammable fibers treated with chemical compounds that only delay ignition, rather than preventing it, posing a need for a fabric that is both fire-resistant and non-irritating to human skin.
Innovation Solution
A fire-resistant fabric is created using a blend of melamine and modacrylic organic fibers in specific ratios, combined into a non-woven batt and stitch-bonded with chain and tricot stitches to create a lightweight, durable, and washable fabric that is resistant to unraveling and ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fire-resistant fibers such as aramid and polyimide are used to produce firefighting apparel, then fire-resistancy is improved, but softness and pliability deteriorate
Solution Approach 1:
The patent uses a composite material system consisting of melamine fibers (providing fire resistance) blended with acrylic or polyester fibers (providing softness and pliability). This composite approach allows the fabric to simultaneously achieve excellent fire-resistancy while maintaining comfort and flexibility against the skin, resolving the contradiction between protection and comfort.
2Loss of time
If chemical compounds are applied to natural or synthetic fibers to label clothing as fire-retardant, then ignition delay is improved, but actual fire-resistancy deteriorates
Solution Approach 1:
The patent employs melamine fibers that inherently resist ignition and combustion without requiring chemical treatments. The fabric may include a sacrificial component (such as acrylic or polyester fibers) that can degrade or burn away, protecting the fire-resistant melamine core and the wearer. This approach provides genuine fire-resistancy rather than merely delaying ignition through chemical compounds.
Data Source
AI summary
A washable fire-resistant fabric and a method for making a washable fire-resistant fabric comprises a lightweight pliant non-woven batt blended from two types of fire-resistant organic fibers which are non-irritating to human skin. A method for stitch bonding a pliant batt of intertwined fire-resistant fibers to form a fabric which is durable and resistant to unraveling is also provided. The fabric has fire-resistant properties wherein the fabric prevents the ignition of articles made therefrom when exposed to high heat or flame sources and further insulates a wearer of the clothing from high heat or flame sources to prevent serious burns.