Companies wanting to package dairy products sustainably have been using cardboard-plastic combinations for many years. K3® packaging was first produced at the Swiss Greiner Packaging site in Diepoldsau over 40 years ago. The latest K3® innovation is now coming to the Swiss market: self-separating K3® r100. This innovative packaging is used for the Milbona brand natural yogurts sold by Swiss retailer Lidl Schweiz.