What is a plastic extruder? How does it work?

It works as follows:

Working principle: The plastic material from the hopper into the extruder, driven by the rotation of the screw to transport it forward in the process of forward movement, accept the heating of the barrel, the shear and compression brought by the screw make the material melt, thus achieving the change between the glass state, high elastic state and viscous flow state. Under the condition of pressure, the material in the viscous flow state passes through the mouth die with a certain shape, and then becomes a continuous body with similar cross section and mouth shape according to the mouth die. Then it is cooled and shaped to form a glass state, and the parts required for processing are obtained.

1. Feeding section: plastic particle raw materials enter from the bottom of the hopper through the motor to drive the screw rotation, so that the material is continuously transported into the barrel.

2. Melt plasticizing section: the barrel produces high temperature through electric heating to melt the raw material. The screw is constantly squeezed through the gap with the gun barrel to plasticize the molten material.

3. Extrusion molding section: The melted material after plasticization is pushed by the screw and extruded through the die mouth of the machine head to form the required plastic products, such as pipes, films, holding material, monofilament, flat wire, packing belt, extruded mesh, plate (sheet) material, profile, etc.

4. Shaping and cooling section: The extruded plastic products are passed through the shaping device and cooling device to obtain a stable shape and size, and finally cooled to room temperature.

5. Traction and cutting: the cooled plastic products are pulled out by the traction device and cut as needed to get the desired length of the finished product.

The advantages of plastic extruder are continuous production, high production efficiency, wide application range, multi-purpose, simple equipment, less investment and so on. It is widely used in agriculture, construction, petrochemical, machinery manufacturing, medical equipment, automobile, electronics, aerospace and other industrial sectors.