Yangi has added a new undercut feature to its dry-forming platform for moulded fibre packaging. The company says the capability is intended to help customers adopt fibre-based alternatives to components such as coffee lids.
Precise undercut geometries are often used in plastic packaging for snap-fit connections and secure closures, providing a reliable mechanical fit between a lid and a container. The geometry is technically challenging in moulded fibre applications.
Yangi is demonstrating the capability with a coffee lid. The lid uses a precision-engineered undercut, and Yangi reports a measured lid-removal force of 6 N intended to provide a secure and consistent fit. The lid was tested through 10 simulated coffee pours over 10 minutes and maintained a leak-tight seal and structural integrity when exposed to hot beverages at 93°C, according to the company.
Beyond coffee lids, Yangi says the undercut technology is suitable for fitted closures in snack containers, takeaway containers, dessert and ice-cream tubs, confectionery packaging, dry and ambient food containers, and packaging for personal-care products, cosmetics and consumer goods.
Carlo Semeraro, head of Commercial Partnerships at Yangi, said achieving that precision in dry-moulded fibre requires advanced tooling and forming expertise. He said the coffee lid demonstrates the performance Yangi can deliver today, while the larger opportunity is applying the functionality to a much wider range of packaging applications.
The feature builds on Cellera, a dry-forming platform powered by Yangi's patented FiberIQ fibre formation system. Unlike conventional wet moulding, Cellera forms fibre without a water-based forming step; Yangi expects this to reduce water and energy requirements in the production of renewable, fibre-based packaging.
In a coffee-lid application, Cellera's four-second production cycle is estimated to reach an output of 300 lids per minute. The platform is designed for high-volume, cost-competitive manufacturing, combining precise fibre distribution with advanced forming technology for consistent quality and functional performance.
Yangi CEO Johann Kaiser said the challenge has never been simply to replace plastic with fibre, but to make fibre perform at the level the market demands. He said every new capability reinforces fibre's position as a competitive alternative to plastic by delivering the functionality, quality and industrial performance needed to drive the transition toward fibre-based packaging.
Yangi will display the new undercut feature at the Sustainable Packaging Summit in Utrecht from 10 to 12 November 2026. Attendees can visit Stand 28 in the Networking Zone to view Cellera dry-forming technology through an immersive VR experience.
The news follows Yangi's announcement that it has commissioned its serial Cellera machine platform. According to the company, combining Cellera with dry forming is set to reduce resource consumption and CO2 emissions by 70%-80% compared with conventional plastic alternatives.