Many roll-to-roll coating companies initially choose low-cost liquid nitrogen cold traps to treat water vapor in vacuum chambers, but the long-term hidden costs remain high. This article compares the economics of liquid nitrogen cold traps and Xieyi WVCP series water vapor capture pumps through a three-year comprehensive cost calculation.
The overall investment in liquid nitrogen cold traps includes: liquid nitrogen procurement, logistics and distribution, and labor costs for filling; the average annual consumable cost per unit is 28,000 to 42,000 RMB. Liquid replenishment requires the shutdown of the winding coating production line, resulting in a considerable hidden capacity loss annually. Additionally, liquid nitrogen storage tanks require explosion-proof modifications and dedicated personnel for safety management, increasing labor costs.
The Xieyi WVCP water vapor capture pump is a one-time purchase investment, incurring only basic electricity costs and no consumable consumption. It requires only one routine maintenance per year, with maintenance costs ≤3,000 RMB. Based on a 4-meter double-chamber winding aluminizing machine, the addition of the water vapor capture pump brings increased yield and production capacity; after deducting electricity costs, the equipment purchase cost can be recovered in 2.1 years.
Additional hidden benefits: Reduced manpower for liquid nitrogen storage and safety management, reduced waste of target materials and films, and the service life of Xieyi water vapor capture pump can reach 8-10 years; no liquid nitrogen waste gas emissions, which meets the standards of green manufacturing and safe production audit, making it the optimal long-term solution for water vapor treatment of roll coating.
Post time: 2026-08-22 14:42:37