Every day, billions of paper cups for coffee and other hot drinks still rely on a thin plastic lining to survive heat, steam and contact with fats and sugars. That plastic layer is precisely what makes most of those cups difficult to recycle at scale. Into this tension between performance and end-of-life steps Michelman, which has unveiled Michem® Coat 9250, a next-generation water-based coating for hot beverage cups.
The new formulation targets a double objective: preserve the familiar user experience of a sturdy, leak-free cup while making it easier for paper mills to recover fibres and keep plastic out of the waste stream. Michem® Coat 9250 is applied as a water-based dispersion on paperboard and is intended to replace conventional PE or PLA linings in typical hot-cup structures.
On the performance side, Michelman highlights a higher solid content and a cleaner sensory profile, with an eye to today’s “premium coffee” positioning. The coating is engineered to withstand more aggressive recipes (intense roasts, flavoured syrups, creamers and sweeteners) without softening, delamination or off-notes that could interfere with aroma and taste. For converters, the product is positioned as a plug-in solution: it can run on a broad spectrum of cup-forming equipment, from ultrasonic and servo-driven lines to the highest-speed commercial formers.
This process flexibility is coupled with sealing performance. According to Michelman, the coating delivers strong heat seals and robust fibre tear, even on fast lines with short dwell times. That combination, runnability plus seal integrity, is crucial if hot-cup producers are to transition away from plastics without sacrificing throughput or creating new sources of waste and quality complaints.
The other half of the story is recyclability. Michelman reports that typical cup constructions using Michem® Coat 9250 have been evaluated under several widely referenced protocols. In Europe, tests following the Cepi Recyclability Test Method (Version 3, February 2025) and the 4evergreen fibre-based packaging recyclability protocol (Version 1, January 2025) have been completed. In China, structures incorporating the coating have been assessed against the China Paper Association Group Standard T/CPA001-2021 and its first amendment. In the United States, hot cups using Michem® Coat 9250 have undergone WMU SBS-E testing, covering both repulpability and recyclability.
When compared with conventional PE-lined cups, the coated structures are reported to use less plastic, generate fewer microplastics during recycling, and support higher fibre recovery. Versus PLA linings, which may enable industrial compostability but are rarely compatible with mainstream paper recycling streams, Michelman points to better structural integrity at high temperatures and more straightforward integration into existing repulping processes.
For brand owners and retailers under pressure to align with tightening packaging regulations and voluntary recyclability targets, a water-based coating that has been benchmarked across multiple regions could simplify specifications and sustainability claims. For converters, it offers a potential route to decarbonise and “de-plasticise” a high-volume application without re-engineering entire production lines.
Placed alongside other recent developments in fibre-based cup technology, Michem® Coat 9250 underscores a clear direction of travel: the industry is moving away from fossil-based plastic linings towards coatings that behave like paper at end-of-life. For hot drinks on the go, the next competitive edge may well be the coating you can’t see, and the recyclability data behind it.
