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A New Class of Fiber

Superior.  Sustainable.  Made in America.

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A cost-competitive, drop-in substitute for glass fibers in composites, with the strength and durability to replace steel and aluminum in certain applications

Our fibers will deliver superior performance and a broader range of use, expanding and reshaping the composites marketplace.  

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  • High Strength

  • Lightweight

  • Non-corrosive

  • Hydrophobic

  • Non-conductive

  • Near-zero emissions

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FAQs

How is the fiber produced?

A pre-selected blend of igneous rock is melted at high temperatures through our proprietary electromagnetic induction process and extruded through small nozzles to form filaments, which are then sized and combined into a roving. From there, it's either spooled as roving or chopped for shipment to the end user.

What are the applications?

The applications are virtually limitless. When used to enhance FRP composites, our fiber delivers new levels of strength, lightness, and durability. The material is inherently flame resistant, non-corrosive, and hydrophobic, ensuring versatility across a wide range of industries, from athletic equipment to aerospace and everything in between. 

What is an FRP?

FRP stands for Fiber-Reinforced Polymer. It refers to a composite material made of a polymer matrix reinforced with fibers. The polymer matrix can be a thermoset or thermoplastic resin, and the fibers are typically glass, carbon, or basalt (a common type of igneous rock.) 

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How is the fiber used in infrastructure?

FRP composites can be used to fortify concrete structures like bridges, sea walls and pre-cast cement pipes,  enhancing their resilience and durability. Rockfiber™, as the core load-bearing component in FRP rebar or as a  macrofiber product added to concrete, significantly extends the life of these structures. 

Is it a decarbonized material? 

Yes.  Made from a single, abundant and unprocessed natural material, and manufactured using electricity powered by renewables, our fiber is a sustainable and decarbonizing material.  

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Basalt fiber isn't new.  What's different about this fiber?

Conceptually nothing is new here, we're melting rocks to make filaments, but our induction process is a game-changer.  It offers better temperature, control, more flexibility, and is eco-friendly. This allows  for the use of a wider range of rocks to produce higher quality, purer, and stronger filaments at scale.

ROCK FIBER INC.

Established in 2022, Rock Fiber Inc. develops advanced fiber and macrofiber products for composites manufacturing and structural reinforecement.  

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