IDI Composites International

407 South 7th Street
Noblesville, IN 46060 US


The IDI 3i Composites Technology Center

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The 3i Composites Technology Center is the research and development division of IDI Composites International. Due to increased demand from OEMs and molders for stronger, lower density and higher performing materials, the 3i Technology Center was founded to meet these industry-wide demands.

A Message from IDI Composites International

IDI Composites International World Headquarters

IDI Composites International (IDI) is the premier global custom formulator and manufacturer of thermoset molding compounds for molders and OEMs.

IDI Introduces Fortium™ and Ultrium™

IDI Composites International and The IDI 3i Technology Center have expanded their line of Structural Thermoset Composites STC®. Fortium™, high percentage glass fiber composites and Ultrium™ carbon fiber based composites were developed to address the performance gap that exists between dense metals and more costly advanced composites to give molders and OEM’s a new material option to consider when designing products that require high strength, but where weight and cost are a consideration.

As Seen In CompositesWorld

CAMX 2018 preview: IDI Composites International
IDI Composites International (Noblesville, IN, US) is featuring its customized polyester/vinyl ester-based bulk molding compounds (BMC), sheet molding compounds (SMC), and an advanced line of Structural Thermoset Composites (STC - Ultra Performance Moldable Composites) that are manufactured in both sheet and bulk formats.

IDI Composites composite fan

CAMX 2017 preview: IDI Composites
IDI Composites International (Noblesville, IN, US) is showcasing innovations from its Structural Thermoset Composites (STC) line of molding compounds.

Dale Brosius

Small companies, long-term impact
In a time known for owner “exit strategies,” longevity in family-owned composites businesses is heartening.

CAMX 2014 show report
Bigger, better and more inclusive than any previous U.S. composites trade event, the inaugural show turns North American eyes forward to the future.


Composites ride and support the rails
Increased ridership and heavier axle loads on rail systems around the world signal a potential boon for composites. 

Product Categories of IDI Composites International

Bulk molding (BMC)
Low-pressure molding
Other compounds
Sheet molding (SMC)