180° flame retardant low melting point fiber to prevent high temperature agglomeration,Glue‑Free Heat Bonding Synthetic Fiber for Industrial Textile car interior

Our 180℃ Flame-Retardant Low-Melt Polyester Staple Fiber 4D×51MM is a high-performance bicomponent fusible staple fiber combining thermal bonding capacity and flame-retardant safety. The outer sheath melts at 180℃ to form solid bonding points with surrounding fibers, while the inner core remains intact to maintain mechanical strength and structural stability.

Integrated flame-retardant formula delivers self-extinguishing properties, effectively slowing down flame spread and greatly improving fire safety of finished textile products. No extra liquid adhesive required during production, enabling glue-free thermal bonding process with lower VOC and formaldehyde risk.

• 180℃ Stable Thermal Bonding Performance: Sheath melts at 180℃ under controlled heating, creating firm fiber-to-fiber bonding points while core maintains structural integrity
• Built-in Flame-Retardant & Self-Extinguishing Property: Integrated flame-retardant modification (not surface coating) provides self-extinguishing effect when away from ignition source
• Glue-Free Bonding, Eco-Friendly Production: Eliminates chemical adhesives, zero formaldehyde, low-VOC production process
• Excellent Processing Compatibility: Good opening and carding performance, compatible with carding machines, hot-air ovens, and thermal calender equipment
• Low Broken-Fiber Rate & Stable Batch Quality: Strict quality control ensures consistent fiber performance and reduced production defects
• Wide Industrial Matching & Factory Direct Supply: Suitable for various industrial applications with large-volume delivery and sample evaluation support

• Fire-Safe Non-Woven Fabric & Batting: Thermal-bonded non-woven batting for public-area decoration and fire-proof cushion layers
• Industrial Filter Felt & Filtration Media: Flame-retardant filter felts for dust-removal and industrial filtration applications
• Automotive Interior Materials: Car interior padding, trunk lining composite substrates meeting vehicle interior safety demands
• Other Industrial Textile Composites: Fire-resistant padding sheets, acoustic panels, and building textile intermediate materials

180℃ flame-retardant low-melt polyester staple fiber 4D×51MM is a dual-function industrial fiber integrating thermal fusion bonding and flame-retardant safety. Unlike ordinary low-melt fibers that only provide bonding capacity without fire-resistant performance, our product solves this industry point through intrinsic flame-retardant modification.

The sheath-core bicomponent structure ensures that under 180℃ thermal treatment, the outer co-polyester sheath softens and melts to bond adjacent fibers together, while the inner high-strength PET core remains solid to support the entire structure, preventing delamination and shape loss after compression or washing.

Processing without liquid glue eliminates formaldehyde and volatile adhesive pollutants, optimizing production procedures. The fiber can be blended with conventional polyester fiber according to different formula ratios to adjust bonding strength and fire-resistance grade for end-products.