The solution: our Planetary Roller Extruder
What makes direct extrusion an attractive option? The conventional PVC production technique is a discontinuous process in which multiple separate steps are necessary. As a result, the materials have to be heated repeatedly, giving them a higher temperature history. This leads to a need for a higher volume of stabilisers and to the creation of temperature hot spots in the melt that are a result of imprecise temperature control in the heating-cooling mixer process. The materials also occupy valuable storage space during the times between each step.
With direct PVC extrusion using a Planetary Roller Extruder, all of the raw materials are processed in a single step and fed into the process simultaneously using appropriate dosing and feeding units. The upshot: it is no longer necessary to produce a PVC dry blend beforehand. Thanks to its modularity and scalability, the ENTEX Planetary Roller Extruder can perform every process step required for the production of PVC.
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