Quick answer: Nylon is not made from any other fibre. It is a fully synthetic polyamide fibre built from chemicals refined out of crude oil and natural gas. The most common type, nylon 6,6, is made from adipic acid and hexamethylenediamine; nylon 6 is made from a single chemical, caprolactam. These are linked into long chains, melted, and spun into fibre.
If you have ever tied a bracelet with nylon thread or pulled a nylon cord tight in a macrame knot, you have probably wondered what this smooth, strong, slightly shiny material actually is. Cotton comes from a plant. Silk comes from a silkworm. Wool comes from a sheep. So where does nylon come from?
This guide answers that question fully, from the oil well to the spool of thread on your table. We cover the exact raw materials, the step-by-step manufacturing process, the main types of nylon, how to check whether a thread is really nylon, and what all of this means when you are crafting with it.
What Fibre Is Nylon Made From? The Short Answer
The honest answer to "what fibre is nylon made from" is: none. Nylon does not start as a fibre at all. It starts as a liquid and solid chemical, and the fibre is created in a factory.
Here is the chain in one line:
Crude oil / natural gas → benzene and other hydrocarbons → monomers (adipic acid, hexamethylenediamine or caprolactam) → nylon polymer → molten nylon → nylon fibre → yarn, thread and cord
Chemists call nylon a polyamide because its long molecular chains are held together by repeating "amide" links. That same type of link is found in natural proteins like silk and wool, which is one reason nylon was originally developed as a silk substitute. But unlike silk, every part of nylon is made by people, not by an animal or plant.
Is Nylon a Natural or Synthetic Fibre?
Nylon is a synthetic fibre, and it was the world's first fully synthetic textile fibre to be produced commercially. To understand where it sits, it helps to know the three main fibre families.
| Fibre family | Where it comes from | Examples |
|---|---|---|
| Natural | Grown by plants or animals | Cotton, jute, linen, silk, wool |
| Regenerated (semi-synthetic) | Natural material, usually wood pulp, chemically dissolved and re-formed | Viscose, rayon, modal |
| Synthetic | Built entirely from chemicals, mostly petroleum-based | Nylon, polyester, acrylic, spandex |
People sometimes confuse nylon with rayon because both are called "man-made". The difference is the starting point. Rayon begins with cellulose from trees. Nylon begins with no natural fibre at all, which is why it belongs firmly in the synthetic group. If you want a deeper comparison of how the two families behave in projects, our guide on natural vs synthetic yarn walks through it.
The Raw Materials of Nylon: From Crude Oil to Monomers
"Nylon is made from petroleum" is true, but it skips the interesting part. Petroleum is not turned into nylon directly. It is first broken down into simpler chemicals, and those are rebuilt into the specific building blocks (monomers) that nylon needs. Which building blocks depend on the type of nylon.
Raw materials for nylon 6,6
Nylon 6,6 is made from two raw materials, and each one has six carbon atoms. That is where the name "6,6" comes from.
- Adipic acid — usually made from benzene, a petrochemical. Benzene is converted to cyclohexane, which is oxidised into a cyclohexanol/cyclohexanone mixture, and then oxidised again with nitric acid to give adipic acid.
- Hexamethylenediamine (HMDA) — made by hydrogenating a chemical called adiponitrile, which itself is produced from butadiene or acrylonitrile, both derived from oil and gas.
When these two are mixed in an exact one-to-one ratio, they form a crystalline compound known as nylon salt. Heating nylon salt joins the molecules into long chains and releases water. This is called condensation polymerisation.
Raw materials for nylon 6
Nylon 6 is made from just one raw material: caprolactam, a ring-shaped molecule that also contains six carbon atoms.
Caprolactam is usually made from benzene too. Benzene becomes cyclohexane or phenol, then cyclohexanone, then an intermediate called cyclohexanone oxime, which is rearranged into caprolactam. When caprolactam is heated to around 260°C in the absence of oxygen, its rings open and link end-to-end into long nylon 6 chains. This is called ring-opening polymerisation.
Raw-material summary table
| Nylon 6,6 | Nylon 6 | |
|---|---|---|
| Monomers | Adipic acid + hexamethylenediamine | Caprolactam |
| Ultimate source | Benzene, butadiene / acrylonitrile (crude oil, natural gas) | Benzene or phenol (crude oil) |
| Polymerisation | Condensation (releases water) | Ring-opening |
| Developed by | Wallace Carothers, DuPont (USA), 1935 | Paul Schlack, IG Farben (Germany), late 1930s |
Where does "coal, air and water" fit in?
You may have read that nylon is made from "coal, air and water". This was DuPont's original marketing line, and it is not wrong. In the early days, benzene came largely from coal tar, the nitrogen in the amide links can be traced back to air, and hydrogen and oxygen come from water. Today, though, the hydrocarbons are almost always sourced from petroleum and natural gas instead of coal.
How Nylon Fibre Is Made: 6 Steps from Polymer to Thread
Once the raw materials are ready, turning them into the nylon thread you buy follows a fairly standard industrial route.
- Polymerisation. Nylon salt (for 6,6) or caprolactam (for 6) is heated in a reactor until the molecules join into long polyamide chains.
- Casting and chipping. The hot, molten polymer is pushed out as a ribbon, cooled with water, and chopped into small pellets called nylon chips. These chips are the raw material that fibre factories buy.
- Melt spinning. The chips are melted and forced through a spinneret, a metal plate with many tiny holes, a bit like a shower head. Each hole produces one continuous filament, which hardens almost instantly in cool air.
- Drawing. The filaments are stretched to several times their original length. This lines the molecules up in parallel and gives nylon its famous strength and springiness.
- Texturing and twisting. Filaments can be crimped for bulk and softness, twisted together into multi-filament yarn, or cut into short "staple" lengths to be spun like cotton.
- Finishing and conversion. The yarn is dyed (nylon takes acid dyes very well, which is why nylon threads come in such bright, even colours) and then braided, knitted or twisted into finished products such as macrame cord, sewing thread and rope.
If you want to compare this with how natural yarns are spun, see our guide on the complete process of making yarn from fibre.
Nylon 6 vs Nylon 6,6: What's the Difference?
Both are the workhorses of the textile world, and in a finished thread they look and feel very similar. The differences show up in heat, stiffness and recycling.
| Property | Nylon 6 | Nylon 6,6 |
|---|---|---|
| Melting point | About 215–220°C | About 255–265°C |
| Feel | Slightly softer, more flexible | Slightly stiffer, more rigid |
| Dye uptake | Very good | Good |
| Heat and abrasion resistance | Good | Higher |
| Recycling | Easier to break back into caprolactam | Harder to recycle chemically |
| Typical uses | Hosiery, fishing nets, textile yarns, craft cords | Tyre cord, seatbelts, carpets, engineering parts |
For crafters, the practical takeaway is simple: both types are strong, smooth and stretchy, and both will melt rather than burn to ash when exposed to a flame.
Other Types: Bio-Based and Recycled Nylon
Not all nylon starts in an oil field anymore. Two alternatives are growing.
Bio-based nylon. Some speciality nylons use plant oils instead of petroleum. Nylon 11 is made from castor oil, and nylon 6,10 uses sebacic acid, which can also come from castor beans. These are still synthetic fibres, because the plant oil is chemically transformed, but their raw material is renewable. They are mainly used in engineering parts and some sportswear rather than everyday craft thread.
Recycled nylon. Waste nylon 6, such as old fishing nets, carpet fibre and fabric offcuts, can be broken back down into caprolactam through a chemical process called depolymerisation. That recovered caprolactam is then polymerised again into fresh nylon with the same properties as virgin material. The best-known example is ECONYL®, produced by the Italian company Aquafil.
Why Nylon's Raw Materials Give It Its Properties
Knowing what nylon is made from explains how it behaves. Its long, tightly aligned polyamide chains, held together by strong hydrogen bonds, create a very specific set of traits.
| Property | What it means in practice |
|---|---|
| High tensile strength | Thin nylon threads hold heavy knots and beads without snapping |
| Stretch and recovery | Stretches under load and springs back, ideal for bracelets and fitted items |
| Abrasion resistance | Stands up to rubbing, pulling and repeated handling |
| Low moisture absorption (around 4%) | Dries quickly and resists mildew. Our article on whether nylon is waterproof explains the difference between water-resistant and waterproof |
| Smooth, slightly glossy surface | Looks bright and neat, but can be slippery in knots |
| Thermoplastic | Softens and melts with heat, so ends can be sealed with a flame |
| Lower UV resistance | Long, direct sun exposure can weaken and fade it over time |
Because nylon absorbs so little water, it can feel warm against the skin in hot weather. We cover that in detail in is nylon good for summer.
Nylon vs Polyester vs Cotton: Where Each One Comes From
Nylon is most often confused with polyester, since both are petroleum-based synthetics. They are, however, different polymers made from different raw materials.
| Nylon | Polyester | Cotton | |
|---|---|---|---|
| Fibre type | Synthetic polyamide | Synthetic polyester | Natural cellulose |
| Main raw materials | Adipic acid + HMDA, or caprolactam | Purified terephthalic acid (PTA) + ethylene glycol | Cotton plant seed fibre |
| Ultimate source | Crude oil, natural gas | Crude oil, natural gas | Cotton crop |
| Stretch | High | Low to medium | Low |
| Moisture absorption | Low (around 4%) | Very low (under 1%) | High |
| Burn behaviour | Melts, celery-like smell, hard bead | Melts, sweetish smell, dark smoke, hard bead | Burns, paper smell, soft grey ash |
So, nylon is not a type of polyester, even though the two are often blended. For the full breakdown, read is nylon a polyester and our difference between nylon and polyester guide. If you are working with mixed fibres, our nylon polyester blend fabric guide explains how the two behave together.
How to Tell If a Thread Is Really Nylon
Sellers in India often use "nylon" loosely for any shiny synthetic dori. If you want to check what a thread is actually made from, these three checks help.
1. Read the label or listing. Look for "nylon", "polyamide" or "PA". Polyester may be listed as "PET" or "poly". A thread sold as "nylon polyester blend" contains both.
2. Feel and stretch. Nylon usually feels smooth, slightly silky and cool, and it stretches noticeably before springing back. Polyester tends to feel a little crisper and stretches less.
3. Do a careful burn test. Cut a 5 cm piece, hold it with metal tweezers over a ceramic plate or sink, away from anything flammable, and touch the end to a small flame.
| What you see | Likely fibre |
|---|---|
| Shrinks away from the flame, melts, smells faintly like celery, leaves a hard tan or grey bead | Nylon |
| Melts, gives off dark smoke and a sweetish smell, leaves a hard dark bead | Polyester |
| Catches fire easily, smells like burning paper, leaves soft grey ash | Cotton or viscose |
Melted nylon is very hot and sticky, so never touch the bead until it cools, and do this test in a ventilated space. Blended threads will show mixed results.
What Nylon's Origin Means for Crafters
Understanding that nylon is a melt-spun polyamide is genuinely useful when you sit down to make something. Here is how its raw-material story turns into practical crafting advice.
It seals with heat. Because nylon is thermoplastic, you can stop a cut end from fraying by briefly passing it near a flame and pressing the softened tip. This is why nylon is a favourite for adjustable sliding-knot bracelets. Our fine 0.8mm knitting nylon macrame thread cord is a popular choice for exactly this kind of work.
It is smooth, so knots need care. The same glossy surface that makes nylon look bright also makes it slippery. Pull each knot firmly, use slightly more wraps on finishing knots, and add a tiny dot of craft glue on knots that carry weight. Our guide to the best nylon thread for bracelets has more tips.
Thickness changes everything. Fine threads suit jewellery, beading and micro-macrame, while thicker cords suit keychains, plant hangers and bag handles. Browse the 1mm nylon macrame thread cord for detailed knotwork or the 2mm nylon macrame thread cord for bolder pieces. Not sure which to pick? Read how to choose the right nylon macrame thread.
It handles damp better than cotton. Low moisture absorption means nylon cord resists mildew and keeps its shape in humid weather, which makes it suitable for bathroom hangings and outdoor décor. Just keep long-term pieces out of strong, direct sunlight. For a side-by-side view, see cotton vs nylon macrame threads.
Care is simple. Hand-wash in cool water with mild soap and air-dry away from heat. Never iron nylon on a high setting, because it can melt. Our macrame thread care guide covers storage and cleaning in more depth.
Is Nylon Sustainable?
Nylon's raw materials come with real environmental costs, and it is worth being honest about them.
- Fossil-fuel origin. Conventional nylon depends on non-renewable crude oil and natural gas.
- Nitrous oxide emissions. Making adipic acid for nylon 6,6 releases nitrous oxide (N₂O), a greenhouse gas far more potent than carbon dioxide. Many modern plants now capture or destroy most of it, but it remains a concern.
- Not biodegradable. Nylon can persist in landfill for decades, and washing synthetic textiles releases microfibres into water.
On the positive side, nylon's durability means a well-made nylon product can last for years, and recycled and bio-based nylons are slowly reducing the reliance on virgin oil. As a buyer, choosing long-lasting cords, reusing offcuts and caring for finished pieces properly all help.
A Brief History of Nylon (and a Popular Myth)
- 1935: DuPont chemist Wallace Carothers and his team first produce nylon 6,6 in the lab.
- 1938: Nylon appears in its first consumer product: toothbrush bristles.
- 1939: Nylon is showcased at the New York World's Fair, and nylon stockings go on sale soon after, quickly replacing silk.
- 1940s: During the Second World War, most nylon is diverted to parachutes, ropes and tents.
- Late 1930s onward: In Germany, Paul Schlack develops nylon 6 from caprolactam.
The name myth. You will often see the claim that "nylon" stands for NY-London. This is a popular myth. DuPont has explained that the name was chosen by a naming committee: the "nyl" part was essentially arbitrary, while "-on" was borrowed from fibre names like cotton and rayon.
Frequently Asked Questions
What fibre is nylon made from?
Nylon is not made from another fibre. It is a synthetic polyamide made from petrochemical raw materials. Nylon 6,6 uses adipic acid and hexamethylenediamine, while nylon 6 uses caprolactam. These chemicals are polymerised, melted and spun into fibre.
Is nylon made from plastic?
Yes, in chemical terms nylon is a type of thermoplastic. The same polymer that is spun into nylon thread can also be moulded into solid items like gears, cable ties and comb teeth.
Is nylon a natural or synthetic fibre?
Nylon is a fully synthetic fibre. Unlike rayon, which starts from wood pulp, nylon contains no natural fibre at any stage of its production.
What are the main raw materials of nylon?
The main raw materials are adipic acid and hexamethylenediamine for nylon 6,6, and caprolactam for nylon 6. All three are mainly produced from benzene and other chemicals refined from crude oil and natural gas.
Can nylon be made without petroleum?
Yes, to a degree. Recycled nylon is made from waste nylon such as fishing nets, and bio-based nylons such as nylon 11 are made from castor oil. These are still synthetic fibres, but they reduce the need for new fossil raw materials.
Is nylon the same as polyester?
No. Both are synthetic and petroleum-based, but nylon is a polyamide while polyester is made from terephthalic acid and ethylene glycol. Nylon generally stretches more and absorbs slightly more moisture.
How can I tell if my thread is nylon?
Check the label for "nylon", "polyamide" or "PA", feel for a smooth, stretchy, silky texture, and if needed do a careful burn test. Nylon melts, shrinks from the flame, smells faintly of celery and leaves a hard bead.
Why is nylon thread good for bracelets and macrame?
Nylon is strong, stretchy, abrasion-resistant and comes in bright, even colours. Its ends can also be heat-sealed, which makes it ideal for sliding-knot bracelets, beading and detailed macrame.
Conclusion
So, what fibre is nylon made from? Not cotton, not silk, and not any fibre at all. Nylon is a synthetic polyamide built from petrochemical building blocks: adipic acid and hexamethylenediamine for nylon 6,6, or caprolactam for nylon 6. Those chemicals are linked into long chains, melted, pushed through a spinneret and stretched into the strong, smooth, colourful fibre we use every day.
Knowing that origin helps you choose and use nylon better. It explains why nylon stretches, why it seals with heat, why knots need a firm pull and why it shrugs off damp. If you are ready to start a project, explore our full range of nylon macrame cords and threads, or browse the nylon polyester blend collection for cords that combine the best of both fibres. For inspiration, our list of macrame craft ideas using nylon threads is a great place to begin.
