United corporation is teamed up with Brazilian petrochemical company Braskem to add bio - sourced plastic caps and closures from sugar cane to its product line . United 's bioplastic caps are made using I 'm green polyethylene , which uses bioethanol as a solvent rather than fossil - based alternatives . carbon comes from sugar cane , which itself captures and releases carbon dioxide from the atmosphere , giving I 'm green polyethylene a negative carbon footprint rating .
United Caps is teaming up with Brazilian petrochemical firm Braskem to add bio-sourced plastic caps and closures from sugar cane to its product line. United's bioplastic caps are made using I'm green polyethylene, which uses bioethanol as a feedstock rather than fossil-based alternatives. Bioethanol comes from sugar cane, which itself captures and fixes carbon dioxide from the atmosphere, giving I'm green polyethylene a negative carbon footprint rating.