Fibre bottles enter commercial production at Pulpex's Glasgow plant

Pulpex, the UK fibre packaging company, opened its first commercial manufacturing facility near Glasgow this week. The move matters less for the volume it adds today than for what it tests: whether a moulded wood-pulp bottle can move from investor pitch decks and pilot runs into a repeatable, licensable manufacturing model that other converters can copy.

For packaging teams tracking alternatives to rigid plastic and glass, this is the most concrete fibre-packaging development in months. It’s worth going through what has actually been announced, what the technology does and doesn’t solve, and where it runs into the PPWR’s design-for-recycling and food-contact rules once it reaches EU markets.

What changed this week

Pulpex opened its first commercial manufacturing facility near Glasgow, with the site having an initial capacity of up to 40 million units per annum and having created approximately 39 skilled manufacturing jobs. The facility sits at Westway in Renfrew, Scotland, and will support customer launches, scaled production and future manufacturing partnerships while serving as the reference plant for Pulpex’s international licensing strategy.

Demand already covers most of the first year’s run. Commercial demand has already been secured, with more than 90% of the site’s initial available capacity for the current financial year committed. The named customers point to two very different use cases. Launch customers include household cleaning brand smol, which is introducing Pulpex fibre bottles into the liquid laundry category, and Purely Scottish Natural Mineral Water, which plans to launch what is expected to be the UK’s first natural mineral water in a paper bottle following an 18-month collaboration with Pulpex.

Pulpex’s chief executive frames the shift as one of credibility with prospective licensees rather than just output. “The opening of our Glasgow facility marks the moment Pulpex moves from proving the technology to proving the industrial model,” said Sandy Westwater, Chief Executive Officer of Pulpex. “Every Manufacture Under Licence discussion we have from today is a conversation about a working manufacturing facility rather than a prototype.” The company’s own ambition is a long way beyond 40 million units: the site serves as the first step towards Pulpex’s ambition of producing one billion bottles annually through a global network of Manufacture Under Licence partners.

The gap between those two numbers is the story. Glasgow is a real plant with real output, but it is roughly 4% of the stated long-term target. Everything else depends on licensing deals converting into working lines elsewhere.

How the fibre bottle is actually made

The underlying process is wet moulding, not folding or gluing of flat board. According to earlier reporting on the Glasgow build, the company’s bottles are manufactured by wet-moulding sustainably sourced wood pulp into single-piece containers before drying and applying an internal food-grade coating appropriate for the intended product. An earlier account of the smol launch described the same principle in more detail: the bottles are manufactured by Pulpex using the company’s proprietary process whereby wet forestry pulp is injected into a porous mould and then dried to produce a single piece bottle, with fibres used in this process coming from FSC- and PEFC-certified forests.

The functional barrier is the part that determines whether the bottle actually works, and it’s thin by design. For the smol laundry bottle, the inside of the bottle has what the company describes as an “ultra-thin, water-based, food-safe” polymer dispersion barrier coating, and Pulpex says that the coating is so thin that it can be recycled in standard paper and card waste streams. The closure is still a conventional plastic part: the cap of the bottle is made from polypropylene (PP), with a dosing cap made from 100% rPP. That’s a familiar design pattern from cartons and other fibre-based rigid packs: the body qualifies for paper recycling, the closure is a separate, small, well-identified plastic component that households are used to dealing with.

Pulpex’s own marketing is consistent on the headline claim across launches. The Glasgow release describes bottles that are manufactured from sustainably sourced wood pulp, contain no hidden plastic and are designed to be recycled through existing household paper and card recycling systems, and adds that the bottles have also been developed for compatibility with established filling infrastructure, providing brand owners with a practical route to adopt renewable, lower-carbon packaging without major production-line modifications.

The licensing model, and who has signed up so far

Pulpex doesn’t plan to build every factory itself. Its growth plan rests on what it calls Manufacture Under Licence: Pulpex supplies the technology and operating know-how, and partners supply the capital and local market access. Pulpex’s licensing model is designed to use the global network of established packaging production sites and experienced manufacturing partners already serving regional markets. By transferring its technology and operating model into this existing infrastructure, Pulpex can accelerate adoption, enable production closer to customer demand and support alignment with regional supply chains and recycling systems.

Glasgow is the template other partners are meant to copy. The Glasgow facility, supported by investment from the UK’s National Wealth Fund and the Scottish National Investment Bank, will act as the operational blueprint for future licensees, supporting commercial launches, technology transfer and international manufacturing partnerships. As additional manufacturing partners come online, Pulpex’s licensing-led growth model is designed to enable local production at scale while maintaining product consistency and compatibility with regional recycling infrastructure. The funding behind the plant itself was announced in 2024: the NWF committed £43.5m in direct equity, with a £10m co-investment from the Scottish National Investment Bank and the balance from existing investors, for a planned 50 million bottle per annum facility near Glasgow expected to create the UK’s first fibre bottle supply chain and 35 new jobs in Scotland. The jobs and capacity figures in this week’s announcement are close to, but not identical to, those original plans, which is normal for a project that moved from financing to construction to commissioning over roughly two years.

Two licensing partners outside the UK are already public. In Europe, Perlen Industrieholding AG and its subsidiary Perlen Papier AG will become the world’s first manufacturing partner of Pulpex, with manufacturing exclusivity rights for fibre-based paper bottles in the markets of Switzerland, Austria, Italy and southern Germany, announced in March 2026. Outside Europe, a partnership announced this month covers South Asia and the Gulf: the deal brings Pulpex’s pulp fibre bottle technology to India, with exclusive rights across India, the GCC and potentially the Australian market as well. Before any of this, Pulpex’s pilot operation had already built relationships with large FMCG groups: the company’s Cambridge site has established partnerships with FMCG businesses including Diageo, Unilever and Kraft Heinz, though those were pilot-stage collaborations rather than commercial supply.

Partner	Role	Region	Status as of October 2026
Pulpex (Westway, Glasgow)	Owner-operated reference plant	UK	Operational, up to 40 million units a year
Perlen Industrieholding / Perlen Papier	Manufacture Under Licence partner	Switzerland, Austria, Italy, southern Germany	Exclusive rights announced March 2026
Alternicq	Manufacture Under Licence partner	India, with potential GCC and Australia	Partnership announced October 2026
smol	Launch brand, liquid laundry	UK	Commercial launch sourcing from Glasgow
Purely Scottish Natural Mineral Water	Launch brand, bottled water	UK	Claimed first UK mineral water in a paper bottle
Diageo, Unilever, Kraft Heinz	Pilot-stage collaborators	Global	Trials at Pulpex’s earlier Cambridge pilot site

Where this intersects with the PPWR

Perlen’s DACH rollout and any future EU licensees put fibre bottles directly inside Regulation (EU) 2025/40, which has applied generally since 12 August 2026. Two parts of the regulation are relevant here, and both are still unsettled in important ways.

The first is recyclability classification. From 1 January 2030, packaging placed on the EU market will generally need to meet a recyclability grade of A, B or C, with grades A and B becoming the only acceptable classes from 2038. The Commission’s methodology for assigning those grades, through implementing acts, is one of the dossiers running behind schedule. In the meantime, industry has built its own evidence base: Perlen’s own announcement cites third-party testing rather than an EU grade, saying the bottles are certified recyclable as paper in 4evergreen testing and feature a food-grade, odour-neutral barrier coating. The 4evergreen protocol, built on Cepi’s published laboratory test method, is a recognised industry standard for assessing whether a fibre pack repulps cleanly, but it isn’t the same thing as a PPWR recyclability grade. Brand owners buying into fibre bottle formats for the EU should treat a 4evergreen pass as useful technical evidence, not as confirmation of which PPWR letter grade the format will eventually receive.

The second is substance restriction. Since 12 August 2026 the PPWR has applied PFAS limits to food-contact packaging: 25 ppb for any single PFAS substance, 250 ppb for the sum of PFAS, and 50 ppm total fluorine, with no stock-exhaustion period for non-compliant material. A natural mineral water bottle is food-contact packaging by definition. The barrier chemistry Pulpex describes is a water-based polymer dispersion rather than a fluorochemical grease barrier, which is the coating family most associated with PFAS in paper packaging. That distinction matters in practice, but it still needs to be demonstrated through the EU declaration of conformity and technical documentation that food-contact packaging placed on the EU market now requires. A UK launch, such as Purely Scottish Natural Mineral Water’s, sits outside the PPWR entirely; an EU launch of the same format, including anything Perlen produces for food contact, does not.

Open questions

Several things aren’t addressed in what’s been published this week, and packaging teams evaluating the format should ask about them directly rather than inferring answers from the marketing language.

Barrier performance over shelf life. A thin dispersion coating that works for liquid laundry detergent, a product with a relatively undemanding barrier requirement, is a different engineering problem to one that has to hold carbonation, protect flavour in still water over many months, or resist oils and acids in food products. Each product category needs its own validated barrier, and the company’s own FAQ notes that technical specifications for three of its typical bottle shapes can be found, and information packs for working with Pulpex will be more broadly available as bottle manufacturers roll out the technology, which suggests the detailed performance data is still being built out category by category.
Real-world recycling yield, not lab yield. Repulpability test methods model an idealised mill process. Whether kerbside sorting systems route a moulded fibre bottle, which looks and handles differently from flat cartons or corrugated board, into the right stream at scale is a separate, unanswered operational question.
Cost and unit economics at scale. No pricing has been published. A licensing model spreads capital risk but doesn’t by itself say whether a fibre bottle will land at cost parity with PET or glass once freight, tooling and filling-line adaptation are counted.
Cap and closure recyclability. The PP or rPP closure is a small, separate stream from the fibre body. That’s a workable design, but it means the “no hidden plastic” claim applies to the bottle body specifically, not to the pack as a whole.

What to watch next

The clearest signal of whether this scales will come from the licensees, not from Pulpex itself. Watch for Perlen Papier’s first commercial output for the DACH market, since that will be the first fibre bottle from this platform to need a full PPWR food-contact compliance file if used for food or beverages. Watch for whether the Alternicq partnership in India produces a working line, since that tests the licensing model well outside Europe’s regulatory and recycling infrastructure. And watch the Commission’s delayed implementing acts on recyclability grading: once a methodology exists, formats like this one will get an actual letter grade rather than an industry test result, and that will tell brand owners far more than a repulpability certificate can.

What to do now

If you’re assessing fibre bottles for a product launch, ask suppliers for the specific barrier coating used for your product category and the repulpability test report behind any recyclability claim, not just the headline percentage.
For any food-contact application bound for the EU market, request confirmation in writing that the coating meets the PPWR’s PFAS thresholds, and build the EU declaration of conformity into your supplier qualification process now rather than at launch.
Treat “recyclable in household paper and card streams” as an industry-protocol claim until the Commission’s recyclability grading methodology is finalised; don’t commit to format claims in consumer-facing material that assume a specific PPWR grade.
If your category has a demanding barrier requirement (carbonation, long shelf life, oils), ask for category-specific performance data rather than relying on results from a different product type.

Sources

Header image: official press image from prnewswire.co.uk.

Fibre bottles enter commercial production at Pulpex’s Glasgow plant