Core Viewpoint - The article discusses the development and market potential of functional fibers, highlighting their unique properties and applications across various industries, including healthcare, defense, and advanced technology sectors [2][4][30]. Summary by Sections Functional Fibers Overview - Functional fibers possess special functionalities while maintaining existing fiber properties, including categories such as optical fibers, phase change fibers, conductive fibers, and biodegradable fibers [2][3]. Market Growth and Production - In 2024, China's chemical fiber production capacity is projected to reach 74.75 million tons, with an 8.8% year-on-year growth. Key segments include polyester filament and spandex, with respective growth rates of approximately 10% [4][5]. Key Functional Fiber Types - **Antibacterial Fibers**: These fibers can eliminate bacteria, with applications in medical textiles and clothing. The global market for antibacterial textiles was valued at $12.78 billion in 2022, expected to reach $15.37 billion by 2028, growing at a CAGR of over 3.75% [12]. - **Flame Retardant Fibers**: These fibers reduce flammability and toxic smoke release. The global revenue for flame retardant fibers reached $2.667 billion in 2022, projected to grow to $3.537 billion by 2029, with a growth rate of 4.1% [16]. - **UV Protection Fibers**: These fibers can block over 95% of UV rays, with the market size in China expected to grow from 5.8 billion yuan in 2024 to over 13.5 billion yuan by 2030, at a CAGR of 12.8% [18][19]. - **Conductive Fibers**: These fibers are used in anti-static and smart textiles, with applications in electronics and medical fields. Major producers include TEIJIN and Toray [21][23]. - **Color-Changing Fibers**: These fibers change color in response to external stimuli, with applications in fashion and military camouflage [25][26]. - **Negative Ion Fibers**: These fibers release negative ions, improving air quality and health. The market for negative ion fibers in China is expected to reach 18 billion yuan by 2029, growing at a rate of 21.4% [28][30]. Technological Advancements - The integration of new technologies in fiber production has led to the development of multifunctional fibers, enhancing their industrial applications and market value [7][8].