Extruder screen changer, as the name implies, is a device used in plastic extrusion production lines. Its main function is to filter out impurities and particles in the melt to ensure the purity and consistency of the extruded material. The screen changer contains one or more filters, which can be replaced according to production needs to achieve a continuous filtering effect. In the plastic extrusion process, the presence of the screen changer effectively avoids production line interruptions and product quality problems caused by impurities.

PBAT (polybutylene adipate/terephthalate) is a biodegradable plastic that is widely used in many fields due to its good biodegradability and physical properties.

The so-called "plastic modification" refers to a method of adding one or more other substances to the plastic resin to change its original properties, improve one or more aspects of its properties, and thus expand its scope of application.

As the manufacturing and processing technology of twin-screw extruders becomes better and better, it not only has to perform tasks such as feeding and plasticizing, but also has some requirements such as dehydration and drying. In order to better meet the different needs of users, the twin-screw extruder must continuously improve its working efficiency, and also find ways to improve the quality of the products produced.

Polyethylene terephthalate is a colorless, transparent substance with a certain gloss (amorphous), or an opaque milky white substance (crystalline). Physical properties: Polyethylene is non-toxic, odorless, and milky white. It has a density of 0.91-0.96g/cm3 and is a crystalline plastic. Polyethylene has a certain mechanical strength, but its mechanical strength is lower than that of other plastics and its surface hardness is poor.

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.

Roots blowers and screw blowers have their own characteristics, and the choice should be based on the needs and scenario conditions of the specific application. Roots blowers are suitable for occasions with large flow and low pressure requirements, while screw blowers are more suitable for applications that require high pressure and stable airflow.

In the quality indicators of raw materials, we often encounter some terms. Accurately understanding their meanings will help us better grasp the performance of raw materials. Here are some commonly used terms.

The reinforcing materials used in reinforced nylon are mainly fibrous substances such as glass fiber, carbon fiber, and whiskers, among which glass fiber reinforcement is the most widely used. The rigid strength and hardness of the material can be significantly improved through glass fiber reinforcement, and the dimensional stability and heat resistance of the material can be significantly improved. Since nylon itself is not strong enough, 10-30% of fiber is added to increase its strength. In particular, 30% intensity is recognized as the most appropriate ratio.

To improve the film's sliding properties, a sliding additive is introduced during its production (usually the active substances are oleamide and erucamide). After film extrusion, the additive migrates to the surface and creates a sliding layer on it, due to which the friction coefficient is significantly reduced and the film's sliding properties are improved.