How we make our biodegradable and compostable bags

The extrusion stage prepares the biopolymers. They are mixed and melted with specific additives, such as stabilisers and plasticisers, to improve processability and strength and turn them into a fluid ready for extrusion.

The molten biopolymer is then extruded through a round die that forms a plastic tube, called a bubble, kept inflated with compressed air.

It is then cooled by a chilled-roller system. Cooling has to be even, to avoid distortion or irregularities in the material.

Finally the plastic film is wound into large reels ready for the next stage.

The reels are processed on machines that cut the bags precisely to the required shapes and sizes. Sealing then gives the product durability and function.

Once the process is complete, the bags are packed in batches with sustainable materials. Each pack is labelled with the information needed for transport and traceability.

Bags ready for delivery are kept in temperature-controlled warehouses so that quality and integrity are maintained.

In our production process, nothing is wasted. Extrusion, printing and cutting inevitably create process scrap, which is collected and worked again so it can be reused instead of being disposed of as waste.

That scrap is turned into pellet and fed back into the production cycle, mixed with new biopolymer to make new products, without compromising quality and strength.

Our aim is a circular economy, in which every stage of the process is geared to sustainability and production efficiency.