PEIT / PEIF / PISA
Superior stiffness and glass transition temperature to PET, and amorphous where most biobased plastics are not, which is what gives the transparency and shape stability glass replacement needs. Built for reusable applications.
Glass gives a brand the feel it wants and a supply chain the weight it does not.
PEIF and PISA give the clarity and the barrier without the mass, and they run on the equipment the packaging industry already owns.
What it is.
Biobased content
100% biobased or recycled
Appearance
Clear
Oxygen barrier
PISA blocks 7× more oxygen than PET
Processability
Good, on existing PET equipment
Weight vs glass
Far lighter. Polyester is about 1.4 g/cm³ against 2.5 for glass
End of life
Technically recyclable
Where it goes.
The bottle on the shelf
Luxury packaging, with the clarity and feel of glass at half the weight.Seven batches of PEIT and PEIF have been produced at 200 L pilot scale, and a colour-control programme is running ahead of first commercial delivery. Any material can be made available from our own pilot plant at ~50 kg scale.
How it compares.
Biobased content
CO2 footprint
Stiffness
Glass transition
Barrier
Amorphous
Stage
Where it is today.
2026
Colour programme and application development.
2027
First industrial trial runs and first commercial resin order.
2028
First kiloton delivery.
2030
Licensing to reactor partners.
PEIF and PISA sit behind families covering solvent polymerisation, chain extenders, and the chemical upcycling of PET and PEF into PEIT and PEIF. See the full patent estate and publications →
Tell us the application, and we will send the specifications.
We answer with the technical datasheet for PEIT / PEIF / PISA, the grades available today, and what we can supply at pilot scale.
