Technology

Questions & Answers on PVC Compounding Extrusion Technology

  1. What are other kinds of materials can process through this PVC compounding extruder beside PVC?
  2. How can I choose the L/D ratio of the screw for this PVC compounding extruder?
  3. How many vacuum degassing ports does this PVC compounding extruder has?
  4. Is there a screen changer in this PVC compounding extruder?
  5. What kind of cutting system is suitable for PVC pelletizing?
  6. If I need to produce pellets, which other downstream equipments can you supply?
  7. If I need good mixing effective for the material of PVC powder and additives, what other equipments should I need?

Q: What are other kinds of materials can process through this PVC compounding extruder beside PVC?

A:  This machine is idea for compounding and extruding PVC powder or PVC powder with high percentage additives such as CaCO3, etc. For other materials’ extruding, you don’t need this counter rotating parallel twin screw extruder. Instead, single screw extruder would be enough. And for other materials’ compounding, co-rotating parallel twin screw extruder would be OK.

Q: How can I choose the L/D ratio of the screw for this PVC compounding extruder?

A:  For the screws with the same diameter, we supply two L/D ratios of the screws. One is 36D and another is 24D. The higher the percentage of PVC powder in the raw material is, the bigger the L/D ratio is. Normally, the percentage of PVC is more than 50%, so we recommend 36D model of PVC compounding extruder for you.

Q: How many vacuum degassing ports does this PVC compounding extruder has?

A: There is one vacuum vent in the PVC compounding extruder.

Q: Is there a screen changer in this PVC compounding extruder?

A: No, there is not any screen changer in the PVC compounding extruder. Instead, it is a breaker plate to as a filter.

Q: What kind of cutting system is suitable for PVC pelletizing?

A:  With this PVC compounding extruder, we equip an air ring cutting system, which is idea for producing PVC pellets.

Q: If I need to produce pellets, which other downstream equipments can you supply?

A:  If you would like to use this PVC compounding extruder to make pellets, besides air ring die face cutting system, you may need a pneumatic air conveying system, a vibrating cooling sieve and a silo to store the pellet. Also, we supply these downstream equipments.

Q: If I need good mixing effective for the material of PVC powder and additives, what other equipments should I need?

A:  If you would like to produce high quality PVC pellets, besides this PVC compounding extruder and downstream equipments, you still need upstream equipments such as heating mixer and cooling mixer to fully mix the raw material first. And then convey this mixing material to the feeder of the PVC compounding extruder. We also provide heating mixer and cooling mixer.