01 Feedstock
Ore, monomer, fibre, mineral or scrap that can legally become Nomex.
Making Nomex is a chain: feedstock, conversion (DuPont 1960s), forming, heat, finish, install.
Skip a step and the properties chapter is describing a different object.
Process steps
02 Conversion
DuPont 1960s
03 Forming
Cast, spin, weave, sinter, foam, laminate or coat — the step that sets anisotropy.
04 Heat / cure
Temper, vulcanise, calcine or dry: skip it and the datasheet is fiction.
05 Finish
Coatings, sizings, facers, galvanizing, anodising, painting.
06 Install
Fasteners, adhesives, DFT, compression, dryness — site quality is a material property.
Routes
Primary
Virgin route around United States.
Recycled / secondary
Recycling exists but quality or energy often disappoints.
Specialty
High-spec grades leave the commodity mill.
Site-applied
Coatings, sprays, casts — the factory is sometimes a jobsite.
Diagrams
Nomex process path
Feedstock to installed product.
- Feed — in
- Convert — mill
- Form — shape
- Finish — coat
- Install — out
- Spec — code
- Scrap loop — rec
Nomex heat & fire
Energy in, class out.
- Heat — in
- Nomex — mat
- λ / char — out
- Ignition — fire
- Euroclass — class
- Assembly — sys
Hard limits
Envelope
Melting/softening does not melt; decomposes ~400 °C+; conductivity low (fibre); papers electrically insulating.
Environment
Moisture, UV, chlorides, alkalis or oxygen — pick the one that actually kills Nomex.
Code
Fire class inherently FR textile is a starting letter, not a wall rating.
Process energy and scrap quality belong in the carbon passport, not in a footnote.
Keep exploring
More in Fire performance
🏠
Gypsum board
CaSO4·2H2O panels that buy fire time by calcining — the everyday A2/A1 lining of interiors.
Overall 59 🧯Intumescent coating
Paints that swell into insulating char — the thin-film way to give steel an R-rating without bulky boards.
Overall 58 🌡️Ceramic fibre
Spun refractory fibres for 1000–1400 °C — kiln linings, gaskets, and a respirable-fibre caution that AES grades try to ease.
Overall 62