Mitsubishi Carbon Fiber and Composites (formerly Newport Adhesives and Composites)


HMT321FR is a 250°F (121°C) to 300°F (149°C) cure, hot melt towpreg with flame retardant, modified epoxy resin system designed for use in applications requiring flame retardance and high glass transition temperature. HMT321FR meets the requirements of FAR 25.853 Appendix F, Parts I, IV, V.


With good toughness and impact resistance HMT321FR is well suited for filament winding process and/or fiber placement process in variety of structural applications such as aerospace, marine, automotive, industrial and sporting goods markets.

Available on a wide range of standard, intermediate, and high modulus carbon fibers as well as glass or aramid. Compatible with many Newport 250°F (121°C) to 300°F (149°C) cure epoxy systems.


• Environmental friendly (solvent free, no release paper or cover film)
• Moderate tack
• Excellent mechanical properties, especially in compression
• Flame retardant, meets FAR 25.853, app F parts I, IV and V.