How to Choose the Right Twin Screw Extruder for Engineering Plastic?

If you have an engineering plastic that you need to work with, you will likely find yourself faced with the challenge of finding the right twin screw extruder that can handle your needs. However, even once you know what those needs are, it can be tough to find the exact type of extruder that will be the best fitfor your specific application and material in use. To help ensure you choose the right one, here are some things to consider as you begin your search.

What is the Difference Between a Twin-screw Extruder and a Single-screw Extruder?

The difference between a twin-screw extruder and a single-screw extruder is that a twin-screw extruder (a process also known as co-rotating or counter-rotating) pushes and pulls material through it at the same time while in contrast, a single screw moves only one direction at a time. This ability allows it to compress small particles while dispersing other ones making it optimal for producing uniform polymer pellets from materials such as polyethylene and polypropylene where impurities must be reduced.

Single screw machines have an advantage overtwin screws when working with applications that need more processing power like PVC pipe due to their higher output and more aggressive compression capability.

What are the Advantages and Main Uses of Twin Screw Extruder?

The key advantage of twin screw extruders is that they can be configured to produce elther a broad spectrum of plastics with different melt flow rates or one specific polymer with a desired melt flow rate. There are many uses of this machine, including making bottles and containers in different sizes and shapes. Users can also produce fibers, foam blocks, films, sheets, pipes, profiles, and other items.

It is important to know the specs (often call core specifications) before purchasing a machine. Common specifications include torque/mold clamping force indexing details that provide quick insight into how quickly various functions happen during processing.

What are the Advantages of Twin-screw Extruder in Engineering Plastics?

In terms of output, a twin-screw extruder is typically better than a single-screw because you can achieve the same volume with less barrel length. While most production-grade extruders run at 1000 RPMs, a twin-screw might run as high as 1800. This means it has higher power outputs and it also comes with fewer pinch points which makes maintenance easier.

With a screw diameter measuring 0.5mm or greater, your material will be processed evenly and more efficiently on an engineering plastic twin-screw extruder which can make sure that every molecule in your formulation will undergo the same chemical processes during processing.


The twin screw extruder is one of the machines required in today’s plastic engineering. They are used in many different applications, with each application requiring a customized design that would fit specific parameters. This is why it is important to have in-depth knowledge about the machine and its application, before making any final decisions.

Having all this information and narrowing down which features will be best for your type of use, you should now be able to make an informed decision on which twin screw extruder will suit your needs.

About US

Kairong Group, headquartered in Nanjing, China, is a global manufacturing and trading company in the field of high-performance plastics and rubber processing equipment, extrusion solutions, masterbatch, and compounding, etc. 

Its unit Nanjing Haisi Extrusion Company is a professional manufacturer of twin screw extruder, single screw extruder, two stage extruder,equipment for dryer and its related auxiaries.  We tailor solutions from raw materials, materials processing equipment, to injection for different customers. 

If you are looking for a reliable twin screw extruder manufacturer, then we are your worthy choice manufacturer, you can browse our homepage to learn more about our company and products, and if you have more questions You can contact us directly, we are happy to provide you with high-quality service and excellent products.



How can we help you?

Send us email or fill in below contact form. We will reply your message as soon as possible.

On Key

Related Posts