Advances in twin screw extruders offer opportunities for processing that is shear sensitive or limited by torque and/or temperature. Regardless of the formulation and/or end product, it is important for processors to understand and employ the latest technology to achieve success.

11 important principles of plastic extrusion 01Mechanical Principle 02Heat principle 03Deceleration principle 04Feed acts as coolant 05In the feeding area, it sticks to the barrel and slides onto the screw 06Materials cost the most 07Energy costs are relatively unimportant 08The pressure at the end of the screw is important 09Output = displacement of the last thread +/- pressure flow and leakage 10 Shear rate plays a major role in viscosity 11The motor and the cylinder are opposite to each other

In summary, although the resin begins to melt at its melting point, in order to ensure a smooth extrusion process and produce high-quality films, it usually needs to be processed at a temperature higher than the melting point.

Regarding the production process of ABS resin, in industrial applications, the underwater strand pelletizing process is more common and more mature. However, the pelletizing system is not closed and there may be some uncertain factors that may lead to product contamination, such as the die plate of the industrial extruder, the water bath, etc.

Kneading blocks are components installed on the extruder screw. They are used in combination of two or more to mix and disperse materials and improve the mixing effect of the extruder. If you want to achieve a good mixing effect, it is important to choose the right kneading block.

As the main equipment for compounding production, the extruder is the most difficult and dangerous to operate. Today, we have sorted out some tips for you to keep in mind during the operation and debugging of the extruder, so as to protect safe and efficient production.

As the workhorse in the field of compounding, the twin-screw extruder's superior performance and customizability are its advantageous features in this position. It can combine different additives and fillers to achieve different particle shapes and properties with different properties. While a variety of additives and fillers can be processed for extrusion, some methods of obtaining these products can also lead to contamination problems and low flow or low pressure in many areas throughout the barrel.

The template of the extruder consists of a template body with a discharge hole and a heat insulation layer, and is fixed to the die head with a threaded rod. Only when the discharge speed of each die hole is consistent can particles of uniform size be cut out. During use, there are many factors that affect the smooth flow of the template. When the template is severely blocked, it will affect the appearance of the particles, the service life of the cutter, and cause shutdown.

For a twin-screw extruder, the screw is mainly divided into a feeding section, a melting section, a mixing section, an exhaust section and a homogenizing section. Threaded components mainly include conveying, melting, shearing, material mixing, residence time control and other functions. The threaded elements of the twin-screw extruder are combined in a "building block" manner. In practice, they can be adjusted according to different production needs. Therefore, screw combination is the key to customizing the twin-screw extrusion process.

The plastic extruder pull bar granulation production line can be used for granulation of masterbatch, PE/PP+CaC03 materials, or recycling granulation of LDPE, HDPE, PP, ABS, PET and other raw materials.