We are making four tonnes of new textile fibre every second. Here's why that has to change — and what's being done about it.

We are making four tonnes of new textile fibre every second. Here's why that has to change — and what's being done about it.

*Published by Samantha, founder of Teddy Locks*

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In 2000, the world produced 58 million tonnes of textile fibre. By 2024, that figure had reached 132 million tonnes — more than doubled in 24 years, and still climbing. If current trends continue, global fibre production will hit 169 million tonnes by 2030.

Four tonnes of new fibre. Every second. Of every day.

Most of it is polyester, derived from petroleum. Most of it will be worn a handful of times and discarded. Less than 1% will ever become a new garment again.

This is not a niche sustainability concern. It is the foundational economics of the textile industry, and understanding it is the only way to make sense of why materials, recycling and end-of-life choices matter as much as they do.

Where the fibre comes from.

Polyester now accounts for 59% of all global fibre production — 78 million tonnes in 2024 alone. Of that, 88% is virgin polyester: extracted from petroleum, refined into terephthalic acid and ethylene glycol, polymerised into chips and then extruded into filament. The process produces between 5 and 9 kilograms of CO₂ per kilogram of fibre depending on the energy source used in production.

Put another way: the global textile industry produced approximately 390 million tonnes of CO₂ from polyester production alone — equivalent to roughly four times the entire annual carbon output of every home in the United Kingdom.

It however, produces no agricultural waste, requires no farmland, and uses relatively little water compared to cotton — which is why it became the dominant fibre of the fast fashion era. It is cheap to produce, versatile, and durable. Its environmental cost is paid at production and again, at a slower rate, over its entire afterlife in the environment.

Cotton is the second most produced fibre at 19% of global output — 24.5 million tonnes in 2024. The environmental cost of cotton is concentrated at the growing stage: land use, water, pesticides, and fertiliser. A single kilogram of conventional cotton requires between 10,000 and 20,000 litres of water to produce depending on the region — enough water for one person to drink for between 13 and 27 years. Cotton accounts for roughly 4.4% of global pesticide use despite covering less than 3% of agricultural land. Its one genuine advantage over polyester is end-of-life — in the right conditions it biodegrades. In landfill, as we have established in earlier posts, those conditions don't exist.

The remaining quarter of global fibre is split between manmade cellulosic fibres — viscose, lyocell, modal, acetate — at 6%, wool and other natural fibres at under 1%, and polyamide (nylon) at around 5%.

The overall greenhouse gas impact of material production in fashion, home textiles and footwear rose by 6% between 2023 and 2024 alone, and has increased by 20% since 2019. The industry set targets under the Paris Agreement - but it is moving in the opposite direction.

Why recycled fibre is not solving the problem.

Of the 132 million tonnes produced in 2024, recycled fibres accounted for 7.6%. That sounds modest but meaningful. The detail dismantles the optimism.

Of that 7.6%, the overwhelming majority — 6.9 percentage points — is recycled polyester made from plastic bottles. The bottle-to-fibre pathway is well established, relatively clean, and genuinely reduces emissions compared to virgin polyester. A peer-reviewed Life Cycle Assessment of REPREVE — the recycled polyester fibre used in Teddy Locks socks — confirmed reductions of up to 60% in greenhouse gas emissions and 67% in freshwater consumption compared to virgin polyester staple fibre.

The problem is that recycled bottle polyester is not the same thing as textile recycling. When a plastic bottle becomes a fleece or a pair of socks, the fibre it contains is now in a textile — and textiles are considerably harder to recycle than bottles. Bottles are a clean, mono-material feedstock with existing collection infrastructure. Textiles are blended, dyed, treated, and entangled with elastic, buttons, labels and thread. The gap between "recycled content in our garments" and "garments being recycled back into new garments" is enormous.

Textile-to-textile recycling — clothing becoming new clothing — accounts for less than 1% of global fibre production. Less than one tonne in every hundred comes from a garment that previously existed.

The core obstacle is blended fabrics. Around 60 to 70% of modern garments contain more than one fibre type. A typical workout legging might be 87% polyester, 13% elastane. A dress shirt might be 60% cotton, 37% polyester, 3% spandex. These blends make garments perform better and cost less to produce. They make recycling extremely difficult. Mechanical recycling — shredding and repulling fibres — works reasonably well on pure mono-fibres like wool. On blended fabrics it produces a degraded, mixed output suitable for insulation or stuffing but not for new garments.

What the alternatives to virgin fibre actually are.

Understanding the options requires separating three different things: recycled synthetics, recycled natural fibres, and next-generation alternatives. They work differently, have different limitations, and are at very different stages of commercial maturity.

**Recycled polyester from bottles (REPREVE and equivalents)**

This is the most commercially mature alternative to virgin polyester and the one with the strongest evidence base. The peer-reviewed LCA data is solid. The supply chain exists. The fibre performs comparably to virgin polyester. The limitation is that it doesn't close the textile loop — it diverts plastic bottles from landfill, which is genuinely valuable, but it doesn't address the problem of garments at end of life. Once a polyester garment made from recycled bottles reaches end of life, it faces the same recycling barriers as any other polyester garment.

**TENCEL™ Lyocell**

Lyocell is a semi-synthetic fibre made from wood pulp — typically eucalyptus — using a closed-loop solvent process that recovers and reuses over 99% of the processing solvent. It uses up to 20 times less water than conventional cotton. The eucalyptus trees it comes from grow on marginal land without irrigation or pesticide, on a cycle of 10 to 12 years. The fibre is certified biodegradable — in a genuine aerobic environment, not the anaerobic landfill we discussed earlier, TENCEL lyocell has been shown to fully biodegrade within 30 days. However, only the TENCEL portion of a blended garment will degrade, and it is blended in most garments.

TENCEL is one of the most defensible materials in sustainable textiles. It is not, however, a recycled material — it is a virgin material from a sustainably managed biological source. It belongs in a different category from REPREVE.

**Mechanical recycling of natural fibres**

Wool recycling through the shoddy and mungo process is the only genuinely functioning fibre-to-fibre recycling system operating at any meaningful scale in the UK, as detailed in an earlier post. It works because wool is a protein fibre that survives mechanical pulling with sufficient fibre length to be respun. The UK's capacity for this is currently concentrated in a single mill, iinouiio, operating in Huddersfield. Cotton can be mechanically recycled but the resulting fibre is significantly shorter and weaker than virgin cotton, requiring blending with virgin content to produce yarn of sufficient strength for garment production.

**Chemical recycling — the frontier**

This is where the genuine innovation is happening, and it is worth understanding both what it promises and where it actually stands.

Chemical recycling breaks textiles down to their molecular components — either to monomers in the case of polyester, or to cellulose pulp in the case of cotton — and rebuilds them into virgin-equivalent fibre. The theoretical advantage over mechanical recycling is significant: no degradation of fibre quality, ability to process blended fabrics, and the possibility of infinite cycling.

Several companies are attempting to commercialise this at scale.

Worn Again Technologies, based in the UK, has developed a solvent-based process that separates and extracts both polyester and cotton from blended polycotton fabrics, producing recycled polyester chips and cellulosic pulp from a single input. The technology has been in development for over a decade and is currently working toward commercial scale.

Infinited Fiber Company in Finland has developed a process that converts cotton-rich textile waste into a regenerated cellulosic fibre comparable to lyocell. It is operating a pilot plant. Plans for a full-scale commercial facility have been revised due to the financing challenges that have affected the entire sector.

Reju, a company backed by French engineering group Technip Energies and opened its first facility in Frankfurt in 2024, uses a chemical process called VolCat that depolymerises polyester textile waste into clean monomers — the building blocks of polyester — creating what the company claims is virgin-equivalent output with 50% fewer CO₂ emissions than virgin production. A facility targeting 10,000 tonnes per year was planned for North Carolina in 2025.

Syre, a joint venture involving H&M, announced a North Carolina chemical recycling plant in 2024 with a 10,000 tonne per year target.

Renewcell in Sweden developed a technology called Circulose that dissolves cotton waste into a pulp that can be spun into new cellulosic fibre. The company faced significant commercial difficulties in 2024 and entered bankruptcy, before being acquired and continuing operations at reduced scale. The technology works. The economics at current scale don't yet.

The honest assessment of chemical textile recycling in 2026 is this: the science is proven at pilot scale. Multiple viable processes exist for both polyester and cotton. None are operating at commercial scale sufficient to make a material impact on the 132 million tonnes produced annually. The gap between pilot plant and gigascale industrial process is vast — in capital cost, in engineering complexity, and in the economics of competing against virgin fibre that is still being produced cheaply from fossil fuels.

Why the economics are the real problem

Every alternative to virgin fibre costs more to produce than its virgin equivalent at current scale. Recycled polyester from bottles is the closest to price parity, but still carries a premium. Chemical recycling of textiles is considerably more expensive per kilogram than producing virgin polyester from oil. Organic cotton commands a 50% premium over conventional cotton.

The fast fashion model is built on the assumption that fibres are essentially free — extracted from the earth, used once, discarded. Every step toward a circular system requires either accepting higher costs or finding a policy mechanism that prices the environmental cost of virgin fibre extraction into the market.

The EU Ecodesign for Sustainable Products Regulation, adopted in 2023, is the most significant policy lever in this space. It requires textile products sold in the EU to meet standards for durability, repairability, and recycled content. Extended Producer Responsibility schemes — which make brands financially responsible for the end-of-life management of the products they put on the market — are being developed across Europe, though the UK has so far not implemented one for textiles.

These policies matter because they change the economics. When a brand is required to fund the recycling of its own products, virgin fibre extraction suddenly looks more expensive relative to recycled alternatives.

What this means for how you buy.

The purpose of understanding all of this is not to make every purchase feel like a moral examination. It is to equip you to ask the right questions.

When a brand uses the word "sustainable," the question is: sustainable compared to what? Recycled polyester from bottles is genuinely better than virgin polyester on emissions and water. It does not solve the end-of-life problem. TENCEL is genuinely better than conventional cotton on water and land use. It is not a recycled material. Organic cotton is genuinely better than conventional cotton on pesticide reduction. It still requires significant water and land.

No currently available fibre is without limitation. The hierarchy of choices, based on the evidence currently available, looks something like this: recycled fibres made from waste that already exists are better than virgin alternatives; natural fibres from well-managed sources are better than petroleum-based synthetics; durability beats all of the above, because a garment worn for ten years has a smaller per-wear footprint than any material choice you could make.

The infrastructure for something better is being built. Chemical recycling technologies are advancing. Policy frameworks are tightening. The Textile Exchange's Materials Market Report records that among companies actively reporting their materials use, virgin fossil-based polyester consumption fell by 12% between 2023 and 2024. Progress is possible.

But the headline number — 132 million tonnes, four tonnes every second, growing toward 169 million by 2030 — tells you the pace of progress is nowhere near the pace of the problem.

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*Teddy Locks socks use REPREVE® recycled polyester and TENCEL™ lyocell. Both choices are deliberate and both have limitations we've described honestly across this blog. The certifications — Global Recycle Standard, SCS Recycled Content Standard, Oeko-Tex Standard 100 — verify what we claim.*

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