SIG And LSDH Take The Aluminium-Free Aseptic Carton Into French Juice Filling At A 19% Carbon Saving

Most of the coverage reads this as a green packaging story. I read it as a format defence. SIG and LSDH have put the aluminium-free full barrier carton into commercial juice filling in Alsace. The French carbon saving reads 19%.

What SIG and LSDH agreed in Alsace

LSDH fills liquid food and drink for brands and for shops across France. The group packs milk, juice, cream and plant-based drinks. This work goes to JFA, its aseptic filling site in Alsace. JFA will now run SIG Terra Alu-free and Full Barrier cartons. The foil layer comes out and a thin polymer barrier goes in. The packs are aimed at juice, plant-based drinks and cream. First products are due on shelf before the end of 2026. LSDH says the change needs only minor work on the filling lines it already has. Shelf life holds at up to 12 months on suitable products and cleared line settings. That matters because the full barrier grade is the hard one to deliver. A plain alu-free carton will not hold an oxygen-sensitive drink for a year. Juice, oat drinks and cream fade without a guard against oxygen, light and aroma loss. Milk is far more forgiving, which is why milk went first.

The carbon number moves with the market

Three savings now sit against the same material. A French study of the pack puts the saving at 19% against a standard aseptic carton. A German juice pack was reported at 29% last year. SIG's own headline figure reaches up to 61% where forest-based polymers are used. The reason is simple. A study of this kind rests on the power grid, the pack size and the boundary drawn around it. Change the country and the grid behind the board changes with it. Change the polymer and the top number moves again. The two firms said as much themselves. They told the trade that the 61% figure covers other material mixes and other boundaries. So a saving is a local result rather than a property of the carton. A brand that signs on the headline will book a number it never gets. A board maker that quotes the headline into a tender invites a challenge later.

The filler decided this rather than the material

JFA was an aseptic site long before this deal. Krones built it a dry aseptic PET line in 2016. That line runs at up to 30,000 bottles an hour on juice and smoothies. Preforms are cleaned with hydrogen peroxide gas, so the line uses no water in production. A site like that already holds test rigs, trained crews and a quality file. That happens because a new pack material has to be proven on the machine that fills it. The filler signs off the seal, the sterile zone and the shelf life together. Each product and each line needs its own sign-off. A low acid juice is a different test from a cream. So the pace of this grade is set by test work rather than by new spending. A board mill can make the material long before a brand is allowed to sell it. The tight step has moved from the mill to the laboratory.

The grade itself is not new. SIG launched the aluminium-free full barrier for multi-serve cartons in May 2025. A German retailer took the first juice packs that July. A Slovenian dairy followed with low-fat milk in February this year. Each of those was one brand on one pack. France brings a contract filler, and a contract filler serves many brands at once.

The categories a full barrier opens up

Zenith's Global Aseptic Packaging Market Report 2026 sets the frame around this. Beverages are now the largest use of aseptic filling at 60,180 million litres. UHT white milk sits behind them at 52,711 million litres. Beverage family cartons are shrinking about 1.0% a year while large PET grows above 5%. So the carton is losing ground in the category it most needs to hold. That matters because juice, plant-based drinks and cream count as beverage volume rather than milk volume. A full barrier grade is the only aluminium-free option those drinks can use. The milk carton never needed one in the same way. So this launch lands exactly where the carton is under attack from the bottle. A greener carton gives a juice brand a reason to stay in board. Without that reason the next pack review points at PET.

West Europe is the hardest place to win carton volume

The region it lands in is not growing. Zenith puts West European aseptic volume at 27,191 million litres. That volume has been falling about 1.0% a year. Aseptic beverages in the region run at 8,759 million litres. World juice and nectar output is in slow decline at 33,725 million litres. The mechanism is worth stating plainly. In a flat market a new pack grade cannot create volume for anyone. It can only move volume from one supplier to another. Every French juice line that takes this board takes it off a rival grade. So the prize is a share of an installed base. That makes the win cheaper to defend and slower to find. It also raises the value of a contract filler. One cleared line at a co-packer can carry work from several brands at once.

The Zenith read on where this grade lands first

We think this grade becomes the standard European juice and plant-based carton first. The milk carton follows some years later. The reason is commercial rather than technical. A juice carton is fighting a PET bottle for the same shelf, so it needs a fresh argument. A European milk carton is not under that pressure today. The figure we watch is the count of cleared filling lines a supplier can name in one market. Five named French sites inside two years would make this grade a default. One site and a press release would not. That matters because a buyer wants a pack from two suppliers and several lines. Single sourcing a pack is how a launch gets delayed. Our opening claim settles here. This is a defence of the carton in beverages. The carbon figure is how that defence gets sold to a brand.

Fillers and converters now face one commercial issue. How much carton volume can a barrier grade actually defend? That answer sits in the pack data rather than in a launch notice. Our Global Aseptic Packaging Market Report 2026 splits world volume by category, pack type and pack size. It covers 39 markets with 2025 actuals. Forecasts run to 2030.