Drying cylinder coating
What it is
Drying cylinders (dryer cans) in paper machines operate at 100-130°C with internal steam and continuous contact with wet paper. Specialized cast PU coatings improve thermal transfer, prevent paper contamination and extend cylinder service life.
The PU technology applied here is typically high-thermal-performance cast pu, selected for the combination of mechanical, chemical and processing properties suitable for the application. Specific formulations vary by equipment manufacturer or final integrator, but the base system has stable characteristics documented in technical literature and segment-specific standards.
Why it matters
For the pulp and paper industry — one of Brazil's most strategic sectors, with Suzano and Klabin among global top players — drying cylinder coating is a decision in continuous high-pressure, high-speed operational environment. Modern paper machines operate at speeds of 1500-2000 m/min in 24/7 operation, and components must endure this regime for months between maintenance stops.
Current drivers. Brazilian pulp export drives demand for new machines and modernization of existing ones, all consuming technical components. Growth of paper packaging (replacing plastic) expands premium paper demand. Sustainability via water and energy savings in process pushes equipment redesign with more efficient components.
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