Closed-loop recycling in practice: examples, products and benefits for manufacturers

What is closed-loop recycling? Closed-loop recycling recovers materials from used products and turns them back into the same type of product, again and again. PET bottles become new bottles, aluminium cans become new cans, glass bottles and jars become new containers, and nylon carpet tiles become new carpet yarn. For manufacturers, it means steadier material supply and lower carbon. Designing products and packaging that are easy to recycle in the first place can also lower packaging EPR fees.

Closed-loop recycling examples: how products return to use

Closed-loop recycling keeps valuable materials moving around the economy instead of leaking out as waste. A product is collected at the end of its life, its materials are recovered, and those same materials go back into making the same kind of product.

For manufacturers and brands, the question has moved on. It is no longer just “can we recycle this?” but “can this material come back to us, and what value does that create?” The best-known examples are PET bottles made back into bottles, aluminium cans made back into cans, glass bottles remelted into new bottles and jars, carpet tiles made back into flooring, and metals Apple recovers from iPhones going back into electronics supply chains.

It is a model the world badly needs. The latest Circularity Gap Report puts the global economy at just 6.9% circular, meaning 93.1% of the materials entering it come from virgin sources. Our work on closing the circularity gap explores why that figure matters for business.

What happens when recovered materials become products again?

When closed-loop recycling works well, the shift from waste to resource is almost invisible to the customer. The changes happen behind the scenes:

• Products are designed so their materials can be separated and recovered.
• Collection and sorting keep PET, aluminium, glass, nylon and other streams clean.
• Reprocessors turn those materials into feedstock good enough for high-quality manufacturing.

A PET drink bottle is the simplest example. It is collected, sorted with other clear PET, washed, flaked and reprocessed. Food-grade recycled PET (rPET) pellets then go back onto the same bottling lines. The same idea applies when glass is crushed into cullet and remelted into new bottles, when nylon from carpet tiles is regenerated into new yarn, or when Apple’s Daisy robot recovers metals from returned iPhones.

For manufacturers, the benefits are clear:

• More secure access to critical materials, especially where virgin supply is volatile.
• Less exposure to raw material price swings and import risk.
• Measurable progress towards ESG and net zero commitments.
• Packaging designed to be easy to recycle, which can lower your UK packaging EPR (pEPR) bill, as fees are set by how recyclable packaging is.

Closed-loop recycling is both a sustainability win and a way to future-proof your products against regulatory and market pressure. For more real-world cases, see our circular economy examples.

What makes recycling a closed loop?

Not all recycling is closed loop. Many materials are downcycled into lower-value uses that cannot easily return to the same product. Knowing the difference helps you decide where to focus design effort, investment and partnerships.

Closed-loop and open-loop recycling compared

Closed-loop recycling returns materials to the same type of product or a clearly equivalent use. Examples include:

• PET bottles back into PET bottles.
• Aluminium drinks cans back into cans.
• Glass bottles and jars back into new glass containers.
• Nylon 6 from carpet tiles regenerated into new carpet yarn.

Open-loop recycling, or downcycling, turns materials into lower-grade products that are less likely to be recycled into high-value uses again.

Examples include:

• Mixed plastics from packaging turned into street furniture or boards.
• PET bottles made into non-critical textiles or insulation.
• Mixed-colour or contaminated glass crushed for use as aggregate.
• Complex electronic scrap used mainly for lower-grade metal recovery.

Both keep materials out of disposal. But closed loops keep material quality and value over many cycles, and that matters for manufacturers:

• Closed loops support consistent material specifications and process performance.
• They make it easier to demonstrate circularity to customers and regulators.
• They give you a credible path away from virgin materials.

Some materials suit closed loops naturally. Aluminium, steel and glass can in principle be recycled indefinitely without losing their core properties. PET and well-managed polymers such as Nylon 6 can also circulate many times when streams stay clean. Multi-material laminates and mixed plastics, by contrast, tend to fall into open-loop recycling pathways. Our guide to the linear economy vs circular economy explains the wider picture.

Why collection, design and processing all matter

Whether a system is truly closed loop depends on three linked factors: collection, product design and processing.

Collection must deliver clean, separated streams. Deposit return schemes for bottles and cans are a good example, and the UK is about to get one. A Deposit Return Scheme for single-use PET, steel and aluminium drinks containers from 150ml to 3 litres will launch in England, Wales, Scotland and Northern Ireland in October 2027, with one aim being to create high-quality recycled material that drinks producers can use again. Wales will include the same materials and container sizes, with one difference: a four-year transition period for glass reuse. Business take-back schemes for carpet tiles or electronics can create high-quality material flows too.

Design for a closed loop is vital. Manufacturers can:

• Use single materials where possible, such as PET bottles with compatible closures and labels.
• Avoid permanently bonding materials that are hard to separate.
• Choose additives, inks and dyes that will not contaminate recycling streams.
• Mark materials clearly to support automated sorting.

Our article on circular design principles covers these approaches in more detail.

Processing must produce feedstock that meets demanding quality and safety standards. Food-contact PET must pass strict safety requirements. Glass cullet must be free of ceramics and other contaminants before it goes back into the furnace. Nylon 6 must be regenerated to a purity good enough for high-performance flooring. Good material sortation and recycling are where this starts.

What this means for your packaging EPR bill

It’s worth being clear about what drives UK packaging EPR costs. Fees are set by how recyclable your packaging is, not by how much recycled content goes into it, or whether that content comes from a closed or open loop. Design is where you can make the biggest difference to your bill.

Since the 2026 to 2027 assessment year, household packaging disposal fees have been adjusted by recyclability, using a red, amber and green rating. Government guidance sets the modulation factor for red-rated packaging at 1.2 in 2026 to 2027, rising to 1.6 and then 2.0 over the following two years. Resource reports that 45% of plastic packaging on the UK market currently fails the recyclability criteria. Green-rated packaging is currently forecast to receive a 9% discount, although final fees are yet to be published by PackUK. In short, packaging that is easier to recycle costs less.

The main things that stop closed loops working are:

• Contamination from food residues, incompatible polymers or hazardous substances.
• Fragmented or inconsistent collection systems across regions.
• Product designs that put short-term cost ahead of long-term circularity.
• Limited local processing capacity for specialist material streams.

Overcoming these barriers is where tech-enabled recycling, accurate data and partnerships across the circular supply chain become essential.

PET bottles, aluminium cans and glass back into packaging

Drinks packaging is one of the most advanced areas of closed-loop recycling. Many brands now use significant amounts of recycled PET and aluminium in new packaging.

Coca-Cola and bottle-to-bottle recycled PET

Drinks packaging is one of the most advanced areas of closed-loop recycling. Many brands now use significant amounts of recycled PET, aluminium and glass in new packaging.

A typical bottle-to-bottle loop works like this:

1. Used PET bottles are collected through kerbside systems or deposit return schemes.
2. Sorting facilities separate clear PET from coloured PET and other plastics.
3. Bottles are washed, shredded and processed into high-quality rPET pellets.
4. The pellets are blended with virgin PET, or used at up to 100% recycled content, to make new bottles.

Coca-Cola shows what is possible. Coca-Cola also switched its green Sprite bottle to clear so it could be recycled back into new drinks bottles more easily (Packaging Insights). In Great Britain, the company moved all of its on-the-go bottles of 500ml or less to 100% recycled plastic, and says its use of recycled plastics saves 29,000 tonnes of virgin plastic a year (FoodBev). According to WRAP, quoted in the same report, making a plastic bottle from recycled plastic takes 75% less energy. This helps brands:

• Reduce demand for fossil-based virgin PET.
• Cut the carbon footprint of packaging.
• Show leadership under producer responsibility frameworks, including UK packaging EPR.

As Coca-Cola’s move to clear bottles shows, small design choices make a big difference, both to recycling outcomes and, because fees follow recyclability, to your pEPR bill. For your business, moving PET packaging into a closed loop usually means working with suppliers on specifications that allow high rPET content, working with recyclers to secure feedstock, and avoiding design choices that hinder sorting, such as problem pigments or full-body sleeve labels. Our guide to sustainable packaging covers these choices in more detail, and our plastic sortation services help keep PET streams clean.

Aluminium can-to-can recycling

Aluminium drinks cans are another strong closed-loop example that has become a mainstream industrial system. Aluminium suits it well:

• It can be recycled repeatedly without significant loss of quality.
• The value of aluminium scrap encourages collection.
• Recycling aluminium uses 95% less energy than producing it from raw material (Alupro).

In a can-to-can loop:

1. Used cans are collected from households, hospitality venues and deposit return points.
2. They are baled, shredded, de-coated and melted.
3. The molten aluminium is cast into new sheet or ingots, ready to be rolled and formed into new cans.

The system is working at scale. According to Metal Packaging Europe and European Aluminium, 76.3% of aluminium drinks cans were recycled across the EU, the UK, Switzerland, Norway and Iceland in 2023, saving 5.7 million tonnes of CO2 equivalent. Deposit schemes make a big difference: Slovakia’s can recycling rate rose from 58% to 91% after it introduced a deposit return scheme.

Because recycled aluminium performs like virgin metal, can makers can replace a large share of virgin content without compromising quality. That creates a strong business case:

• Lower embodied carbon, which supports net zero strategies.
• Less exposure to volatile primary metal markets.
• A clear contribution to circular economy targets that customers and regulators understand.

Reliable collection points, such as reverse vending machines, and clear customer messaging help feed more material back into the system. Our deposit return services, including through our specialist brand EcoVend, support businesses preparing for the UK scheme.

Glass bottles and jars: recycling and reuse

Glass is one of the most natural closed-loop materials. Like aluminium, it can be recycled again and again without losing quality, so a used bottle can become a new bottle or jar.

In a glass bottle-to-bottle loop:

1. Bottles and jars are collected, ideally separated by colour.
2. Contaminants such as ceramics, stones and metal closures are removed.
3. The glass is crushed into cullet.
4. Cullet is melted with raw materials to make new containers. Because cullet melts more easily than raw materials, higher recycled content reduces the energy needed in the furnace.

Quality depends on clean, well-sorted streams. Clear glass needs clear cullet, and a single piece of ceramic or ovenware can cause defects in new containers. That is why glass collected through dedicated schemes tends to be far more valuable than glass mixed with other recycling.

Glass also offers an even tighter loop than recycling: reuse. Refillable bottles are returned, washed and refilled, keeping the container itself in use rather than remelting it. Over the next couple of years, we expect to see a rise in return schemes for both glass recycling and reuse, with Wales’ transition period for glass reuse an early signal. For brands, that means thinking now about glass weight, colour, closures and labels that work for both refilling and recycling.

Carpet tiles and Nylon 6 in a returning material cycle

Closed-loop recycling is not just for packaging. In the built environment, carpet tiles and modular flooring show how durable products can be designed for disassembly and material recovery. Our article on the circular economy in construction explores this sector further.

Interface, recycled nylon and recovered fishing nets

Flooring manufacturer Interface has played a leading role in moving commercial carpet tiles towards circularity. A key material in that shift is Nylon 6, a high-performance polymer used in carpet yarn.

Through partnerships with suppliers such as Aquafil, discarded fishing nets and other Nylon 6 waste are collected and regenerated into ECONYL nylon. This is chemically recycled Nylon 6 that can be turned back into yarn for premium carpet tiles and textiles. According to Aquafil, every 10,000 tonnes of ECONYL raw material saves 70,000 barrels of crude oil and avoids 65,100 tonnes of CO2 equivalent emissions, cutting nylon’s global warming impact by up to 90% compared with virgin nylon.

This matters for closed loops in two ways:

• It proves Nylon 6 can be broken down and rebuilt into a like-for-like material, rather than being downcycled.
• It shows how partnerships linking fishing communities, collectors, recyclers and manufacturers can unlock new resource streams.

For building owners and specifiers, carpet tiles made with regenerated nylon cut embodied carbon and show real circular economy action, without sacrificing performance or looks.

Tarkett, Aquafil and post-use carpet tiles

The next step is recovering Nylon 6 from the tiles themselves at end of life. Manufacturers including Tarkett have developed take-back and recycling schemes, working with Aquafil, to capture used carpet tiles and separate their components.

In these systems:

• Used carpet tiles are collected from commercial buildings instead of being landfilled or incinerated.
• Tiles are separated into backing, adhesive residues and nylon pile.
• The Nylon 6 fibre is regenerated into ECONYL or similar feedstock.
• That feedstock is spun into yarn and used to make new carpet tiles and flooring.

This loop is more complex than bottles or cans. It has to deal with mixed backings, adhesives and on-site contamination. It shows both the potential and the challenges for durable goods:

• Product design must anticipate disassembly decades later.
• Reverse logistics must be planned across whole building portfolios.
• Recycling partners need steady, predictable volumes to justify specialist processing.

For flooring and fit-out manufacturers, designing for these loops can set your products apart, reduce long-term resource risk and align with green building and circular procurement policies. Our construction waste management services help keep fit-out materials in circulation.

Apple Daisy and the limits of electronics recovery

Electronics test the limits of closed-loop recycling. A device such as the iPhone contains dozens of elements, many in tiny amounts and tightly integrated parts. The scale of the challenge is huge. The UN’s Global E-waste Monitor 2024 found that a record 62 million tonnes of e-waste was generated in 2022, and less than a quarter (22.3%) was documented as properly collected and recycled.

How Daisy separates materials from selected iPhones

Apple’s Daisy robot disassembles selected iPhone models at scale, separating components more effectively than manual dismantling. When Apple expanded the programme, it said Daisy could take apart 15 different iPhone models at a rate of 200 an hour, with each robot able to disassemble 1.2 million devices a year (Apple Newsroom).

Apple also collects devices through Apple Trade In, at any Apple Store and online. In 2018, Apple refurbished more than 7.8 million devices and helped divert more than 48,000 metric tons of electronic waste from landfill. Alongside Daisy, Apple opened a Material Recovery Lab in Austin, Texas, to develop future recycling processes (The Pioneer).

Daisy’s role in the resource cycle looks like this:

• Devices are collected through Apple’s take-back and trade-in programmes.
• Eligible iPhones go into Daisy, which removes modules such as batteries, displays and logic boards.
• Materials such as cobalt, aluminium and tin are recovered and sent to specialist recycling streams.
• For cobalt, Apple sends iPhone batteries recovered by Daisy back upstream in its supply chain, where the cobalt is used to make brand-new Apple batteries (The Pioneer).
• Those streams supply material for new electronics and other high-value uses.

Daisy shows three important things:

• Robotics can make electronics recycling more consistent and safer.
• Manufacturer-led take-back, such as Apple’s, can recover more critical materials than general collection alone.
• Some materials, such as aluminium enclosures, are easier to loop back into similar uses than others.

For businesses managing fleets of devices, the lesson is to work with partners who can document what is recovered, rather than treating old equipment as a disposal problem. Our WEEE recycling services and our guide on how to reduce WEEE waste are good places to start.

When material recovery does, and does not, close the loop

Despite innovations like Daisy, much electronics recycling today is still closer to open-loop recycling than closed-loop recycling. Several things make true closed loops hard:

• Material complexity: devices combine plastics, metals, glass and ceramics in tightly integrated assemblies.
• Miniaturisation: small components make it hard to separate pure material streams without losses.
• Hazardous substances: older devices may contain substances that limit recycling options.
• Rapid product change: short innovation cycles make standardised recycling harder.

Even Apple’s Daisy only processes selected iPhone models. As a result, some recovered metals go into wider metal markets rather than straight back into a new iPhone. Plastics from electronics often end up in lower-grade uses or energy recovery. According to the Global E-waste Monitor, just 1% of demand for rare earth elements is met by e-waste recycling.

Electronics can still move closer to closed loops. Manufacturers can:

• Design devices with modular parts that are easy to remove and replace.
• Avoid unnecessary material mixing and problem additives in housings and internal parts.
• Give recyclers the data and tools they need for correct disassembly.
• Commit to using verified recycled content from returned devices in new products.

Product data will play a growing role here. EU Digital Product Passports will share material and repair information along the value chain, which should make recovery easier. For organisations buying electronics, choosing products with circular design features and strong take-back arrangements helps close circularity gaps over time, even where a full closed loop is not yet possible.

Making closed-loop recycling work for your business

Across PET bottles, aluminium cans, glass, carpet tiles and electronics, the pattern is the same. Closed-loop recycling depends on design, collection, processing and demand all lining up, so materials keep their value and function.

Reconomy is an international circular economy specialist. We combine technology, skills and people to help manufacturers close the loop through recycling and material management, EPR compliance support, and take-back and reverse logistics. If you would like help designing a closed loop for your products or packaging, talk to our team.

Sources

• Circle Economy, Circularity Gap Report 2026: Introduction
• GOV.UK, Deposit Return Scheme for drinks containers: policy statement (May 2025)
• GOV.UK, Packaging EPR producer disposal fees modulation
• Resource, Modulated EPR fees set as 45% of plastic packaging rated unrecyclable
• FoodBev, Coca-Cola GB ends use of virgin plastic in on-the-go bottles
• Alupro, aluminium beverage can recycling in Europe
• Packaging Journal, reporting Metal Packaging Europe and European Aluminium 2023 can recycling data
• Aquafil, ECONYL regenerated nylon celebrates a decade
• UNITAR and ITU, Global E-waste Monitor 2024
• Packaging Insights, Coca-Cola hits 100% rPET GLACÉAU smartwater bottle target (2019)
• Apple Newsroom, Apple expands global recycling programs (April 2019)