Application: Pelletizing

Granulates are the basis for a variety of raw material components (plastics, fillers, additives) used in blow molding, injection molding and extrusion. Some important quality criteria for granulates are residual moisture, consistent bulk density, low dust content and uniform homogeneity. 

PVC granulates are further processed by a great variety of different methods, such as:

Blow-molding

  • Bottles for cosmetics and foodstuff

Injection molding

  • Plugs
  • Fittings
  • Shoe soles (soft PVC)
  • Boots (soft PVC)

Extrusion

  • Window and roller blind profiles
  • Cable conduits
  • Technical profiles
  • Pipes

Important applications for thermoplastic granulates are in the production of reclaim and master batch materials.

A distinction is made between the pelletizing of PVC and of other polymers, due to their different characteristics. To produce PVC granulate, twin screw or planetary roller extruders are used in combination with a hot die face. For other thermoplastic materials, single screw extruders are combined with water ring, underwater or strand pelletizing systems.

Pictures of applications