polypropylene fiber 18D*64MMDurable Lightweight Industrial PP Fiber for

Our 18D Polypropylene Staple Fiber is a heavy-denier industrial-grade PP fiber engineered for demanding technical textile applications. Manufactured from high-quality isotactic polypropylene resin through advanced one-step spinning process, it delivers an outstanding balance of high strength, low density, chemical inertness and moisture resistance.

At 18 denier, this coarse fiber features excellent rigidity and supporting performance, with tensile strength comparable to high-grade polyester while maintaining full strength even when wet—a critical advantage over polyamide fibers. It is inherently resistant to acids, alkalis and most chemical solvents, does not absorb water, and dries rapidly. These properties make it highly suitable for geotextile engineering, industrial filtration, carpet production, automotive interiors and construction reinforcement.

The fiber performs smoothly in carding, needle-punching and thermal bonding processes, and can be used alone or blended with other fibers. Strict production control ensures consistent fineness, length and mechanical properties across batches, minimizing production defects and maximizing yield for downstream manufacturers.

• Geotextile & Civil Engineering: Road base reinforcement, slope stabilization, landfill drainage, concrete reinforcement, tunnel lining. Provides long-term structural support and corrosion resistance in harsh underground and outdoor environments.
• Industrial Filtration: Dust collection filter felt, chemical liquid filtration, industrial air filter media. Resists corrosive gas and liquid, maintains filtration efficiency under challenging working conditions.
• Carpet & Floor Covering: Needle-punched carpet, carpet backing cloth, floor mats, artificial turf base. Delivers dimensional stability, abrasion resistance and durable supporting structure.
• Automotive Interior: Carpet lining, engine compartment insulation, wheel arch liners, trunk trim. Lightweight, sound-dampening and heat-resistant performance meets automotive interior standards.
• Industrial Non-Woven & Composites: Industrial needle felt, packaging interlining, thermal insulation materials, protective textile composites.

• 18D Heavy Denier, High Tenacity Performance: Coarse 18D specification delivers outstanding tensile strength and structural rigidity. Strength remains virtually unchanged under wet conditions, ensuring reliable performance in outdoor, underground and liquid-contact applications.
• Ultra-Low Density, Lightweight Advantage: With a density of only 0.91 g/cm³, polypropylene is one of the lightest commercial synthetic fibers. It provides larger coverage per unit weight, reducing material consumption and overall product weight.
• Excellent Chemical & Corrosion Resistance: Naturally inert to most acids, alkalis, salts and organic solvents. Will not degrade or lose strength in alkaline concrete, acidic filtration media or corrosive industrial environments, extending service life of finished products.
• Hydrophobic & Quick-Drying: Naturally water-repellent with zero moisture absorption. Liquids pass through quickly without swelling or weakening the fiber, ideal for filtration, drainage and outdoor geotextile applications.
• Wide Processing Compatibility: Compatible with needle-punching, thermal bonding, carding and non-woven production lines. Can be processed into needle felt, carpet backing, geotextile fabric and reinforced composite materials.
• Stable Batch Quality & Customizable Specifications: Uniform fineness and cut length with low impurity content. Standard cut lengths available, custom specifications supported. Factory-direct bulk supply with reliable lead times.