Mondi and Werner & Mertz are ready to release new, 100-percent recyclable pouch made of polyethylene
Mondi flexible packaging “leapfrogs” ahead in the recycling game
After almost four years of development, Mondi and Werner & Mertz are ready to introduce a new, patented innovation for2019: a 100-percent recyclable pouch with detachable decorative panels. The pouch replaces conventional flexible packaging for Frosch products. According to Austria-based Mondi, the pioneering design overcomes many shortcomings of the recycling processes for this kind of packaging, and is the result of a joint effort including Werner & Mertz, Mondi, EPEA Switzerland (Cradle to Cradle), Der Grüne Punkt - Duales System Deutschland and Institut cyclos-HTP.
In 2014 Werner & Mertz decided to develop packaging that is recyclable in the fullest sense. This was before most fast moving consumer goods (FMCG) companies viewed a commitment to sustainability as an indispensable building block for brand equity. Several packaging suppliers told them it could not be realised. Then they met Mondi.
From the start, according to Mondi, the project was truly ambitious. It was not about developing flexible plastic packaging that is only theoretically recyclable - packaging likely to end up in landfill. Rather, the design aim was to "reverse-engineer" the recycling process: to create packaging fit for every stage of the process.
The challenges of true recycling
According to Mondi, a crucial and often neglected step in the recycling process is sorting. Failure to sort the collected packaging into material streams that recyclers can use leads to down-cycling - that is, the production of recycled material no longer suitable for its original application.
"If you want to avoid a ‘garbage in, garbage out' scenario," explained Immo Sander, Head of Packaging Development, Werner & Mertz Group, "the entire value chain must be aligned - from packaging producers through players in sorting and recycling to buyers of recycled material." This is the aim of the Recyclate Initiative that Werner & Mertz launched in 2012.
In order to develop packaging that would yield high-end recycled material, Werner & Mertz and Mondi consulted multiple recycling experts, including Der Grüne Punkt - Duales System Deutschland, EPEA Switzerland, as well as Institut cyclos-HTP for later certification. The packaging needed to be made of a polyethylene mono-material, which is a prerequisite for recycling.
"Our collaboration with Werner & Mertz shows, in the best possible way, how challenges can become solutions," said Jens Kösters, Manager Technical Services, Mondi Consumer Goods Packaging, "We worked our way through an ‘innovation funnel'— testing different materials until we arrived at a designed-for-recycling concept that convinced everyone at each point of the value chain. Furthermore, the concept offers clear benefits related to sealing strength and maximum filling volume."
A final touch was added to solve the issue of recycling printed plastic materials. The pouch has two layers. "We dress the pouch up in an eye-catching ‘outer garment' that is printed with brand design on the front and consumer info on the back," said Sander. "When the pouch is empty, we ‘undress' it automatically by shredding and sorting the two components into separate recycling streams."
This patented pouch is now 100-percent recyclable. The material is also free of glue or adhesive, and spouts and caps are made of polyethylene - which means the recycled material will be equivalent in quality to the original material.