Yangi has added an undercut capability to its dry-forming platform for moulded fibre packaging, extending the technology to components that depend on secure snap-fit closures, such as coffee lids.
Undercut geometries are common in plastic packaging, where they help create reliable mechanical fits between lids and containers. Reproducing those shapes in moulded fibre is technically difficult, and Yangi is presenting the new feature as a way to bring that closure performance into fibre-based formats.
Coffee lid demonstrates closure performance
The company is showing the capability through a coffee lid. According to Yangi, a precision-engineered undercut provides a secure and consistent fit with a measured lid removal force of 6 N. The lid was tested through 10 simulated coffee pours over 10 minutes, retaining a leak-tight seal and structural integrity when exposed to hot beverages at 93°C.
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 this level of precision in dry-moulded fibre requires advanced tooling and forming expertise. He added that the coffee lid demonstrates the performance available today, while the broader opportunity lies in applying the functionality across more packaging applications.
Cellera platform targets high-volume output
The undercut feature builds on Cellera, Yangi’s dry-forming platform powered by its 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 the 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 to support consistent quality and functional performance.
Yangi CEO Johann Kaiser said the challenge has not been simply to replace plastic with fibre, but to make fibre perform at the level the market demands. He said each new capability reinforces fibre’s position as a competitive alternative by delivering the functionality, quality and industrial performance needed to support the transition toward fibre-based packaging.
Summit display and earlier machine milestone
Yangi will display the undercut feature alongside other additions to its dry-moulded fibre packaging range 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 announcement follows Yangi’s commissioning of its serial Cellera machine platform. Combining Cellera with the dry-forming process is expected to reduce resource consumption and CO2 emissions by 70%–80% compared with conventional plastic alternatives.
Separately, PulPac licensee Hébert Group has partnered with Andritz to scale up production of Dry Molded Fiber trays and lids. The partners are targeting water- and energy-efficient manufacturing using renewable or recycled fibres.