Beyond Fossil Plastic: Salty’s Certified Home Compostable Fresh Produce Polyliner
Protecting fresh produce without conventional fossil-based plastic
Plastic polyliners have an important function in fresh produce supply chains.
Their barrier properties can help reduce moisture loss, slow respiration and protect produce during packing, storage and distribution.
But if a liner is still needed, does it need to be made from conventional fossil-based plastic?
Salty's Biobased Polyliner provides another option — a functional fresh produce liner that is certified AS 5810 Home Compostable and made in New Zealand.
Designed to Protect the Produce
Reducing packaging waste is important, but reducing food waste matters too.
Our biobased polyliner technology has been developed to provide the functional barrier properties required to help preserve fresh produce throughout the supply chain.
In independent trials with climacteric fruit, our biobased polymers outperformed non-renewable fossil-based polymers in moisture loss, fruit shrivel and softening over time.
This demonstrates an important principle behind Salty's packaging development:
Don't just replace the plastic. Replace the function it performs.
Certified AS 5810 Home Compostable, Worm & Soil Safe
Unlike conventional PE and LLDPE polyliners, Salty's biobased liner provides an organically recyclable end-of-life pathway.
The material is certified AS 5810 Home Compostable, worm and soil safe, and made without added PFAS.
AS 5810 certification requires materials to meet criteria for biodegradation, disintegration and ecotoxicity under home composting conditions. This means the certification goes beyond simply demonstrating that a material breaks apart — it considers its ability to biodegrade and its impact on the compost environment.
At the end of its useful life, the material is designed to be safely digested by soil microorganisms and organically recycled into biomass, CO₂ and water.
This independently verified performance can also provide valuable confidence to organisations and organic-waste operators assessing whether compostable packaging is appropriate for their systems. Acceptance by individual commercial composting facilities remains dependent on their own processes and acceptance criteria.
Protect the produce. Replace fossil plastic. Organically recycle the material.
A Practical Pathway Away from Fossil Plastic
Not every fresh produce application can immediately eliminate its liner.
That's why Salty offers different pathways.
Where a liner can be removed, our bio-coated fibre Linerless Box technology can integrate barrier functionality into the transport packaging itself.
Where a flexible liner is still required, our AS 5810 certified Biobased Polyliner provides an alternative to conventional fossil-based plastic.
Together, these technologies allow organisations to start addressing plastic throughout the fresh produce supply chain — not just at the supermarket shelf.
Commercially Available Now
Salty's AS 5810 certified Biobased Polyliner is commercially available now.
The technology provides growers, exporters, packhouses and fresh produce organisations with a practical alternative for packing, storing and distributing produce while reducing reliance on conventional fossil-based plastic.
For us, better packaging isn't just about what happens to the packaging.
It's also about protecting the valuable food and resources inside it.
Turning off the plastic tap without turning off packaging performance.
Interested in replacing conventional PE or LLDPE polyliners? Contact Salty to discuss pricing, applications and custom requirements.