Short-cut fibers change what your compound can do. Added to rubber, plastic, adhesives, or concrete, they dramatically increase tensile modulus (low-strain stiffness), abrasion resistance, green strength, and dimensional stability — in ways conventional fillers can’t. Note: unlike particle fillers, short-cut fibers typically increase stiffness at low strains while decreasing ultimate elongation — a composite behavior that must be accounted for in compound design.
High strength, high heat resistance
Cost-Effective Reinforcement
Lightweight, high stiffness
Durability and versatility
Flexibility and wear resistance
High strength, high heat resistance
Easy Rubber and Polymer Dosing
Lightweight functional fillers
Short-cut fibers have a fundamentally different geometry from particle fillers like carbon black or kaolin clay. Their high aspect ratio creates a composite reinforcement effect — improving properties in multiple directions, including ones that round particles can’t influence. Our customers find savings in the process: reduced cycle times, less waste from improved green strength in unvulcanized sheeting, and fiber that simply costs less than fabric reinforcement.
6 PHR of Varamix aramid pulp in an EPDM compound increases Mod20% by approximately 3xover the unfilled control.
Short fibers interrupt crack propagation. Using fiber ends at the compound surface significantly improves abrasion resistance in belts, rollers, and friction materials.
Fibers orient with rubber flow during milling, calendering, and extrusion — creating directional
stiffness that can be designed into part geometry.
Aramid fibers maintain performance at elevated temperatures. PAN carbon fibers add electrical conductivity and anti-static capability to rubber and plastic compounds.
Natural cotton and cellulose fibers, plus post-industrial tire cord streams (nylon and polyester), give formulators a path to sustainable content without sacrificing performance.
Fiber reinforcement often costs less per unit of performance than woven fabric, while reducing
cycle times and improving green strength in unvulcanized sheeting.
Finite Fiber’s technical team supports you beyond supply. We offer in-house rubber formulation expertise, custom blending, precision cut fiber, and end-to-end rubber part development through our sister company Qualiform.
Fiber + additives, carrier oils, compatibilizers, binders — pre-blended and ready to use in your process. Blends can be tailored per application to tune properties and improve dispersion.
Varamix® and PelleFiber® pellets for easy dosing, handling, and dust-free mixing. Up to 94% fiber content (carrier polymer 5–25% of blend depending on masterbatch customization), with higher bulk density for easy incorporation.
Precision toll cutting from 1mm to 1 inch (25mm) to your specified length, material, andtolerance. Per customer request — no standard catalog required
In-house formulation expertise. Recipe suggestions, mixing know-how, molding guidance, andend-to-end rubber part manufacturing through sister company Qualiform.
Tell us your application, your compound type, and the property you’re trying to improve. We’ll identify the right fiber and get a sample in your hands fast.
