Pulpex Opens First Commercial-Scale Paper Bottle Plant in Glasgow, Targeting 40 Million Units a Year
Pulpex, backed by Diageo and Pilot Lite, is opening its first commercial-scale paper bottle factory in Glasgow this month, targeting up to 40 million bottles a year. Purely Scottish water and Smol detergent will be the first products sold in the bottles this autumn, backed by £62 million in funding including £43.5 million from the UK's National Wealth Fund.
Commercial Production Begins After Multiple False Starts
Pulpex, a packaging company launched in 2020 by drinks group Diageo and venture capital firm Pilot Lite, is opening its first commercial-scale factory in Glasgow this month, according to larazon.es. The plant marks the company's first attempt to move paper bottle technology beyond pilot volumes after two previous product launches were cancelled before reaching retail shelves.
The Daily Mail, cited by larazon.es, reports that the first bottles will go on sale this autumn, filled with mineral water from Purely Scottish and detergent from the Smol brand. A third production line is due to come online shortly afterward, which will bring the factory close to its maximum capacity of 40 million bottles a year.
The project has received £62 million in funding, of which £43.5 million comes from the UK's publicly backed National Wealth Fund and £10 million from the Scottish National Investment Bank.
Single-Piece Molded Pulp Replaces Plastic Liners
Pulpex molds wood pulp into a single-piece container coated with a recyclable barrier made from a water-based emulsion that is absorbed into the bottle's own fibers, rather than applied as a separate plastic liner. Previous attempts by other companies to make a bottle that is both durable and paper-recyclable typically relied on an internal plastic lining, which required separating materials before recycling and still generated plastic waste.
According to Pulpex, the barrier coating accounts for only 6% to 7% of the bottle's total weight and contains neither PET nor HDPE, the plastics commonly used in waterproof packaging. The company told The Times that it could in future reinforce the barrier to keep wine fresh for up to two years, and that the design allows the entire bottle to be recycled together with ordinary paper and cardboard.
Not Entirely Plastic-Free
Even the new Smol bottles will not be completely free of plastic: they will include a polypropylene dosing cap that must be recycled separately from the bottle body. Pulpex has faced setbacks before. A paper bottle developed for Diageo's Johnnie Walker whisky brand, promised for 2021, never reached shelves, and a similar package designed for Heinz ketchup was cancelled in 2022.
Broader Doubts Over Paper Packaging's Environmental Case
The launch comes as environmental groups continue to question whether replacing plastic with paper packaging necessarily reduces environmental harm. The Green Alliance warned in 2020 that producing paper bags can require up to four times more energy than producing plastic ones. A more recent study cited by larazon.es found that disposable “paper” cups release microplastics and nanoplastics when they come into contact with hot liquids, and that cups coated with biodegradable PLA released up to 12 times more microplastics than those coated with conventional polyethylene.
- Factory location: Glasgow, Scotland
- Maximum annual capacity: 40 million bottles
- Total project funding: £62 million (£43.5 million from the National Wealth Fund, £10 million from the Scottish National Investment Bank)
- First products: Purely Scottish mineral water and Smol detergent