Nomex materials are made of high-temperature-resistant aromatic polyamide fibers which, equivalent to GreenWeave materials, are woven of staple fiber yarns, i.e. yarns that are spun of short thin fibers.

The final yarn is made by twisting two yarns into one yarn that is used both in warp and weft direction (length- and crosswise of fabric). The result is a fabric that is capable of carrying a large amount of dust without blocking the air flow through the material. Such blocking would require washing of the textile duct to ensure the distribution of the calculated quantity of air at the calculated pressure loss.

Similar to Trevira CS, Nomex materials are flame retardant, however, Nomex holds the extra feature of having a very high melting and self-ignition temperature. Nomex does not melt but decomposes at 698° F. Nomex materials for fabric duct ventilation are mostly applied in the shipping industry.

See Nomex table

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