PUR foaming: high pressure, low price

The new EcoPlus machines are offered by Impianti OMS as a particularly convenient high-pressure PUR foaming solution for small converters and users of low-pressure machines. These solutions are space-saving, reliable, easy to use and maintain, environmentally friendly and low-cost, and cover process capacities ranging from 6 to 180 litres per minute (with a 1:1 or a 2:1 ratio).

Each of the two metering units feeding the mixing head is equipped with a fixed displacement rotating axial piston pump, as well as with a horizontal pump coupled with an inverter-controlled three-phase motor. Both units also feature a double gasket seal, provided with a dedicated lubrication circuit, a cartridge filter at the metering pump suction side, a pressure relief valve, a double-contact digital pressure switch on the metering pump delivery side, for controlling the metering pressure, and a single-contact digital pressure switch, for controlling the feeding pressure at the metering pump suction side.

The two 100-litre vertical single-wall cylindrical tanks, adequately insulated and PED-certified, are provided with a removable flanged cover, a low-speed agitator driven by a gearmotor, a pressurization system complete with a regulating valve and a control pressure gauge, and a pressure relief valve. The temperature of each component can be adjusted directly inside the corresponding tank by means of a system including heating electrical resistors, installed in the tank’s wall, a cooling water control solenoid valve at the tank’s wall inlet, and a PT100 temperature control probe connected to the PLC.