Technical yarns
Lenzing® FR
Lenzing® FR is a trademark of the Austrian company Lenzing AG, producing special flame-resistant fibers made from modified viscose.
🔹 Key features:
- The fiber is cellulose-based, but through modification it gains resistance to flame and high temperatures.
- The flame-retardant properties are inherent in the fiber structure (not dependent on finishes), so they do not wash out or degrade over time.
- When exposed to fire, the fiber does not melt or drip, but carbonizes, forming a protective barrier.
- Despite its protective qualities, the fiber remains soft and comfortable to wear, offering an advantage over many synthetic flame-resistant materials.
- Often blended with other fibers (such as polyester or aramids) to create specialized protective fabrics.
- Lenzing® FR is used in the production of protective clothing for various industries:
- Fire safety
- Military and police forces
- Oil, gas, and metallurgical industries
- Electrical and welding protection
- Motorsport gear
🌱 Environmental Responsibility
- Fabrics made from Lenzing® FR provide lightweight comfort, breathability, and ease of wear, even in extreme conditions.
- Lenzing® FR is certified according to the EU Ecolabel and uses the Lenzing Fiber Identification System to ensure traceability and authenticity of the product. Carbon-neutral fiber options, certified by ClimatePartner, are also available for those looking to reduce their carbon footprint without compromising protection and comfort.
In essence, it is a high-quality flame-resistant fiber used for technical textiles.
Modacrylic yarn
— is a yarn made from modacrylic fibers (copolymers of acrylonitrile with other monomers, containing 35–85% acrylonitrile).
🔹 Characteristics of modacrylic yarn (according to manufacturers’ technical data):
- Self-extinguishing flame-resistant fibers — char rather than melt when exposed to fire;
- Soft and lightweight, with a feel similar to acrylic but more heat-resistant;
- Good dyeability and color retention;
- Resistant to mold, chemicals, and UV exposure;
- Skin-friendly, does not cause irritation (unlike some natural fibers, e.g., wool).
🔹 Applications of modacrylic yarn:
- Protective clothing (blended with cotton, viscose, Lenzing® FR, or aramid fibers)
- Uniforms for oil & gas, energy sectors, and firefighters
- Flame-resistant interior textiles (blankets, upholstery, carpets)
- Artificial fur, decorative threads, and wigs
📌 In short: Modacrylic yarn is a flame-resistant synthetic yarn, soft and comfortable, but less strong than aramid fibers, and therefore often used in blends.
Kermel®
Kermel®
— is a yarn made from Kermel® aramid fiber, developed by the French company Kermel (part of the Kermel / Kaneka Group).
🔹 Key characteristics of Kermel® yarn (according to the manufacturer, Kermel®):
- Flame and heat resistance: does not burn, self-extinguishing, resistant to temperatures up to 400–500°C depending on the blend;
- High strength: fibers are durable and do not degrade under stress;
- Lightweight and flexible: suitable for textile products while maintaining wearer comfort;
- Resistant to chemicals and UV exposure;
- Can be used pure or blended with other fibers to enhance comfort.
🔹 Applications:
- Protective clothing for firefighters, oil & gas, energy, and chemical industries
- Gloves, suits, linings, and ballistic components
- Flame-resistant blankets and textiles for industrial and military use
📌 In short: Kermel® yarn is a premium aramid flame-resistant yarn with higher heat resistance and strength compared to modacrylic and Lenzing® FR, making it ideal for technical and protective textiles..
Twaron®
— is a yarn made from Twaron® aramid fiber, developed by Teijin Aramid (Netherlands).
🔹 Overview (according to the manufacturer, Teijin Aramid):
- Para-aramid fiber, similar to Kevlar® in fiber class;
- Available as threads, yarns, fabrics, and nonwoven materials;
- Does not melt or drip when exposed to fire, resistant to temperatures up to ~500°C, and does not support combustion.
🔹 Properties of Twaron® yarn:
- Extremely high strength and durability, stronger than steel by weight;
- Flame and heat resistance;
- Chemical resistance to acids, alkalis, and solvents;
- Lightweight with low thermal conductivity.
🔹 Applications:
- Technical textiles requiring strength and flame resistance
- Flame-resistant and protective clothing (firefighters, military, industrial workers)
- Ballistic protection (bulletproof vests, helmets, shields)
- Reinforcement for composites, rubber, and cables
📌 In short: Twaron® yarn is an ultra-strong, flame-resistant aramid yarn used for protective clothing, ballistic materials, and technical textiles.
Technora®
Technora® yarn is a high-strength yarn made from aromatic polyamide (aramid fiber), produced by Teijin (Japan), and belongs to the same para-aramid fiber group as Twaron® and Kevlar® (according to the manufacturer).
🔹 Key characteristics:
- Composition: Para-aramid (synthetic fiber based on aromatic polyamide)
- Strength: Significantly stronger than steel by weight
- Flame resistance: Does not melt or drip, withstands temperatures up to 500°C
- Durability: High resistance to abrasion and material fatigue
- Chemical resistance: Resistant to acids, alkalis, oils, and UV; superior to some other aramids, including Kevlar®
- Color: Typically golden-beige or brownish
🔹 Applications:
- Technical textiles (cables, belts, ropes, nets)
- Personal protective equipment (flame-resistant clothing, gloves, protective suits)
- Ballistic protection (bulletproof vests, helmets, shields)
- Reinforcement of rubber, plastics, and composites
- High-load structures requiring strength, lightness, and durability
📌 Technora® yarn is an ultra-strong, heat-resistant, and chemically resistant aramid yarn used for protective, reinforcement, and technical textile applications.
Meta-aramid
Meta-aramid is a type of aramid fiber belonging to the class of aromatic polyamides. It differs from para-aramids (e.g., Kevlar®, Twaron®) in molecular structure and properties (according to manufacturers’ data).
🔹Key characteristics:
- High heat resistance — retains properties at 200–220 °C (short-term exposure up to ~400 °C)
- Non-flammable — fibers do not support combustion and are self-extinguishing
- Chemical resistance — resistant to acids, alkalis, and most solvents
- Moderate strength and elasticity — lower than para-aramids, but sufficient for textile applications
🔹 Applications:
- Protective clothing for firefighters, welders, and metallurgical workers
- Heat-resistant gloves, coveralls, and masks
- Thermal insulation fabrics and hot-gas filters
- Composites requiring flame and high-temperature resistance
🔹 Well-known brands: Nomex® (DuPont), Conex® (Teijin), Newstar® (Yantai Tayho)
📌 In short: Meta-aramid is primarily used for protection against fire and high temperatures, unlike para-aramids (Kevlar®, Twaron®), which are focused on ballistic protection and high strength..
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