US-based consumer products company Tupperware Brands has expanded its ECO+ sustainable product line and announced a partnership with chemical company Eastman.

The Lunch-It Containers and Sandwich Keepers will complement the portfolio’s existing products, including the ECO+ Straw Set and ECO+ To-Go Cups.

Launched in 2019, ECO+ products were initially made from a material that used mixed plastic waste.

The line has since incorporated products made from various sustainable, recycled, biobased and environmentally conscious materials.

To further expand the ECO+ range, Tupperware will use Eastman’s Tritan Renew recycled resin.

Tritan Renew is powered by Eastman’s polyester renewal technology, which converts single-use plastic waste into a durable, safe and BPA-free material.

The material uses as much as 50% certified recycled content and can be used to design clear or transparent products.

Tupperware Product Innovation executive vice-president Bill Wright said: “Our efforts to support the next generation of sustainable materials continue to reflect upon our purpose to nurture a better future every day by reducing waste at every step of the product lifecycle.

“I’m honoured today to expand our ECO+ line with new product introductions and our new partnership with Eastman’s Tritan Renew, which allows us to use recycled material in our more transparent designs.

“I know together, we’ll work to reshape what is possible in regards to recycled material.”

Eastman Speciality Plastics vice-president and general manager Scott Ballard said: “Tupperware has been at the forefront of sustainability, even before sustainability was top of mind. The brand is synonymous with bringing durable, reusable plastics into the home to keep food fresh.

“At Eastman, we’re pleased to make molecular recycling a reality and deliver products that reduce consumption, advance the circular economy and create value from waste. Tupperware’s choice of Tritan Renew shows what is possible today, not just years in the future.”

Both this strategic partnership and expansion of the ECO+ range will enhance Tupperware’s No Time to Waste vision, which aims to minimise food and single-use plastic waste through innovation and design.

In 2019, Tupperware partnered with non-profit organisation World Central Kitchen to reduce single-use plastic waste during disaster relief efforts.

Under the partnership, Tupperware’s reusable food containers were to be used to support World Central Kitchen in distributing prepared meals at relief sites globally.