Dear Sir or Madam,
I gained experiences in ridged PU pouring processing and mixing process from the fridge manufacturer when I was working as a PU process engineer. There three substances in chemical preparing process ; Isocyanate, Plyol, and blowing agent(cyclopentane )
The mixing plant was designed as recirculation system which supplies the mixed-polyol and isocyanate to the vessel in processing area. The ratio of two chemical was controlled by metering system. In the generating PU, pour-head injects substances into the fridge under the high pressure condition then they will be mixed. PU foam expands over the time and it became a ridged foam after about 40 seconds.
To maintain and improve foam physical and thermal properties are my main roles. Here are the foam quality indicators :
-Density, K-factor, bubble in foam, foam mixing, cure time,
I hope that my experience is able to contribute your project.
Regards,
Kasidit P.