In the production of HDPE pipe, the friction coefficient of the material and the inner wall of the inner wall of the cylinder is large, and the force of the inner wall of the cylinder is large, and the friction coefficient of the screw is as small as that of the screw, and the force of the screw is small, so it is beneficial to the relative forward sliding between the inner wall of the cylinder and the screw slot of the screw. If the friction between the particles and the inner wall of the barrel is small, the material will only move with the screw in the screw slot instead of moving forward in the machine barrel, resulting in no material for the extruder. The friction coefficient of HDPE material is small, and the force of the inner wall of the cylinder is small, so the output of the extruded material is small, the output of extrusion is small and the production efficiency is low. When the slot type feeding machine is used, the material is meshed with the slot teeth in the feed section, and the friction between the material and the inner wall of the barrel is increased, thus the material transportation can be increased, the production and production efficiency are improved and the cost can be reduced.
from: HDPE Pipe Extrusion Line