F800 Flame Retardant Polyester Staple Fiber,Intrinsic Self-Extinguishing FR Fiber for Apparel & Home Textile

F800 high flame retardant plain fiber
2.5D*51MM

Specifications can be customized

The 2.5D*51MM F800 high flame retardant regular polyester staple fiber addresses core pain points in the flame retardant textile industry. Traditional surface-coated flame retardant fibers generally have stiff hand feel, uneven FR performance and poor washing resistance. The flame retardant coating peels off easily after laundering or friction, leading to sharp decline in fire resistance, and often releases heavy smoke and toxic gases during combustion, bringing great safety risks.

This product solves these problems fundamentally with intrinsic copolymerization flame retardant technology. Flame retardant functional groups are directly copolymerized into the polyester molecular chain during polymerization, becoming an integral part of the fiber structure. This gives the fiber stable F800 grade flame retardant performance: it extinguishes immediately once leaving the fire source, effectively inhibiting flame spread. The FR performance is permanent and will not be lost due to washing, friction or high temperature processing, providing long-lasting safety guarantee for end products.

Compared with coated FR fibers, it also has obvious advantages in hand feel and processability. The 2.5D fine denier design delivers soft, delicate and smooth texture, eliminating the rough, stiff feel of traditional coated FR products, and can be used to produce comfortable close-fitting flame retardant fabrics. The 51mm standard medium staple length matches mainstream spinning equipment, with excellent spinnability and low yarn breakage rate. It supports pure spinning to produce high-grade flame retardant fabrics, or blending with cotton, viscose, wool and other fibers to balance performance, comfort and cost.

The fiber features low smoke and low toxicity during combustion, which greatly reduces the risk of suffocation and toxic injury in fire accidents, and meets the fire safety requirements of public places with dense people flow such as hotels, hospitals, cinemas and shopping malls. Every production batch undergoes strict flame retardant performance testing and specification inspection to ensure stable and consistent quality.

It is an ideal raw material for protective garment manufacturers, home textile factories, industrial nonwoven producers and engineering decoration projects, providing reliable, safe and cost-effective flame retardant solutions.

• Protective Apparel & Workwear: Flame retardant work uniforms, fire protective clothing lining, children's wear and public service uniforms. Soft hand feel for comfortable wearing, permanent F800 FR performance meets occupational fire safety standards.
• Home Textile & Hotel Engineering: Flame retardant curtains, sofa fabrics, bedding linings, hotel decorative fabrics and public place upholstery. Self-extinguishing performance complies with public place fire safety codes, and soft texture maintains home comfort.
• Industrial Nonwoven & Filtration: Flame retardant filter materials, electrical insulation nonwovens, building fireproof fabrics and industrial lining materials. Stable high temperature resistance and FR performance, suitable for industrial special scenarios.
• Public Decoration & Construction: Cinema, theater, shopping mall and hospital decoration fabrics, soft package flame retardant base materials. Low smoke low toxicity design reduces fire hazard in crowded public places.

• F800 High Flame Retardant Grade, Reliable Self-Extinguishing: Reaches F800 high flame retardant grade with strict performance indicators. Adopts intrinsic copolymerization FR technology, flame retardant functional groups are embedded into the PET molecular chain, delivering stable self-extinguishing performance that the fiber stops burning immediately after leaving the fire source, effectively slowing down fire spread.
• Permanent FR Performance, Wash-Resistant & Non-Migrating: Unlike surface-coated flame retardant fibers that easily lose effectiveness after washing or friction, this intrinsic FR fiber maintains stable flame retardant performance throughout the entire product lifecycle. It will not wash off, migrate or degrade with repeated laundering, long-term use or high temperature processing.
• Low Smoke & Low Toxicity, Safety Compliant: Releases low smoke density and minimal toxic fumes during combustion, greatly reducing secondary injury risk in fire scenarios. Meets strict fire safety standards for public places, protective clothing and industrial materials, providing reliable safety guarantee for end products.
• 2.5D Fine Denier, Soft & Delicate Hand Feel: 2.5D fine denier specification delivers soft, delicate and smooth hand feel, avoiding the stiff, rough texture of traditional coated FR fibers. It can be used to produce soft, comfortable flame retardant fabrics suitable for close-fitting wear and home textile scenarios.
• 51MM Standard Medium Staple, Wide Process Compatibility: 51mm standard medium staple cut length is perfectly compatible with ring spinning, air-jet spinning, carding and nonwoven production processes. It can be 100% pure spun or blended with cotton, wool, viscose and regular polyester fibers in different proportions to adjust fabric performance and cost.
• Virgin Raw Material, Stable Batch Consistency: Made from 100% virgin flame retardant PET chips, with strict in-line control over fineness, length and FR performance. Uniform fiber specification and stable batch quality reduce fabric defects and dyeing differences, suitable for large-scale standardized production.