The black and white materials are mixed with the premix of cyclopentane through the injection gun head of the high-pressure foaming machine and injected into the interlayer between the outer shell and the inner shell of the box or door. Under certain temperature conditions, the polyisocyanate (isocyanate (-NCO) in the polyisocyanate) and the combined polyether (hydroxyl (-OH)) in the chemical reaction under the action of the catalyst to generate polyurethane, while releasing a lot of heat. At this time, the foaming agent (cyclopentane) premixed in the combined polyether is continuously vaporized and the polyurethane is expanded to fill the gap between the shell and the liner.
Features:
1. The metering is accurate, and the high-precision metering device is adopted, and the metering accuracy is high. The metering pump adopts a magnetic connection, which will never leak and has a long service life.
2. The mixing device adopts the L-type high-pressure self-cleaning mixing head, the nozzle diameter is adjustable, and the high pressure forms a mist to mix evenly.
3. High and low pressure cycle switching device, switching between working and non-working.
4. The temperature device adopts a cooling and heating integrated machine to control a constant temperature, with an error of <±2°C.
5. Electrical control, using 10-inch touch screen, PLC module control, controlling temperature, pressure and pouring flow, storing 99 recipes, and high degree of automation.
6. A material tank: polyether/cyclopentane material tank (individually designed white material room), with a concentration detector and a high-power exhaust system.