PPR Pipe Production Process

Raw material + color masterbatch → mixing → vacuum feeding → raw material drying → single screw extruder → color line extruder → screw die → sizing sleeve → spray vacuum setting box → spray cooling water tank → inkjet printer → Crawler tractor → finished product inspection and packaging

industrial production process

Traditionally, three manufacturing processes are the most representative ways to produce polypropylene. Hydrocarbon slurries or suspensions are used in the reactor as a liquid inert hydrocarbon diluent in order to transfer the propylene to the catalyst, remove heat from the system, deactivate/remove the catalyst, and dissolve the atactic polymer. The range of grades that can be produced is very limited. (This technology is no longer used).

Bulk (or bulk slurry): Use liquid propylene instead of liquid inert hydrocarbon diluent. The polymer is not soluble in diluents, but rather rides on liquid propylene. The polymer formed is withdrawn and any unreacted monomer is flashed off.

Gas phase: The use of gaseous propylene in contact with a solid catalyst results in a fluidized bed medium.