How to choose a suitable extruder in the production of PVC

- Nov 20, 2018 -

How to choose a suitable extruder in the production of PVC

PVC is one of the world's largest production of plastic products, plastic manufacturers in the choice of extruder need to take into account various factors. In order to better produce high-quality plastic products, Shandong Polymer Additives in this simple for you to provide some of the recommendations of the selection.

PVC plastic extruder can be divided into single-screw plastic extruder, double-screw plastic extruder and multi-screw extruder according to the number of screws. In practical use, single-screw and twin-screw extruders are the most common.

Single Screw Extruder

In the production of PVC hard products, the advanced main use of conical counter-rotating twin-screw extruder, the price of this extruder is more appropriate. When cone twin-extruder is used, the PVC powder with special structure will not generate too high friction heat during extrusion, and can avoid material decomposition limitedly The extrusion quantity of the equipment can be stable, the output of the finished product is higher and the performance can be better guaranteed. In recent years, the production of rigid PVC products, we suggest that the preferred choice of conical twin-screw plastic extruder.


Now a small number of plastic products factory is also in the use of parallel twin-screw extruder PVC extrusion molding pipe, profiles and other production. But for the two extruders mentioned above, the one-time investment cost of the equipment is high and the maintenance of the equipment is complicated, especially in the production of rigid PVC products, the damage to the equipment is greater than the CONE BIPHASIC The service life of the late equipment may have an impact, so the current application is still relatively small.

Parallel twin-screw extruder

After determining the type of Extruder, we also need to know the specifications of the plastics. According to the product specifications for different analysis of material, and then refer to the "screw diameter and product size specifications, output, " a reasonable choice.