Vulcanization — curing rubber under heat and pressure — is the defining process of the industry, and it runs on steam. Tire plants feed banks of curing presses where steam heats molds and internal bladders; general rubber-goods factories cure hoses, belts and gaskets in large steam autoclaves; latex processors need hot water and steam for coagulation and drying. Cure cycles are timed to the second, so sagging steam pressure directly means under-cured, scrapped product.
The load is continuous, heavy and price-sensitive — which is why rubber processors were among the first to adopt solid-fuel packaged boilers. An SZL chain-grate unit burning coal or, increasingly, biomass (rubberwood offcuts, palm kernel shell) delivers steam at a fraction of oil cost, with the robustness to run three shifts between maintenance windows. Multi-boiler installations stage on and off as press banks open and close.
For smaller workshops or plants inside emission-sensitive zones, gas-fired WNS units offer the same dependable curing steam with minimal stack footprint. Either way, accumulator sizing and header design matter as much as boiler capacity — we engineer the whole steam loop so the last press in the row cures exactly like the first.