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Twin Screw Extruder

COWELL’s Twin Screw Extruder Machine with excellent mixing and dispersion functions for different components, is widely used for plastic compounding, pharmacy, chemicals, and food extrusion. As one of the leading professional suppliers in China, COWELL EXTRUSION has intensive experience in twin screw design and manufacture.

Sample Applications


Colour Masterbatch

Mono-colour (high dosing) colour concentrate colour masterbatches, Single Pigment Concentrate Colour Masterbatches, Customized Colour Masterbatches. It is widely used for plastic colour matching productions COWELL has intensive experience & twin screw compounding solutions for your colour masterbatches production.


Additive Masterbatch

There are plenty of applications of additive masterbatches, such as UV/HALS, Anti-oxidant, Anti-blocks, Anti-static,Slip, Anti-fog, Optical Bright,Nucleating agent, Polymer Modifier, Matt Compounds. Processing Aids. All those could be don on our twin screw extruder. COWELL experts will give you more advice on how to make good quality additive masterbatches.


Filler Masterbatch

Filler masterbatch normally divided into CaCo3 filler, talc filler, Kaolin filler, TiO2 filler, BaSo4 filler,etc. They are widely used in plastic industries. On one hand, it is used for cost effective, on the other hand, it can modify the product properties to some extend. COWELL will help you to give the best suitable solutions for the filler masterbatch extruder.



Thermoplastics are widely used in various industries, like automotive, toys, cables, wrapping, shoes, pipes, transportation, construction, etc. Almost all of them could be process on twin screw extruder, such as TPR, TPE, TPV, POE, TPO, EVA, PA hot melt, etc. COWELL has too much experiences on thermoplastics processing know-how.


Engineering Plastics

Engineer plastic is used for many different areas, automotive, home appliance, electrics, engines, boat,airplane,etc. We provide twin screw compounding solutions for engineering plastics, PC/ABS, PA, PP, PBT+glass fiber/carbon fiber, etc.


Bio-Degradable Materials

COWELL have exclusive solutions for bio-degradable compounds on PLA, PBAT & PVA. Get to us for valuable advice on your applications.


PET Recycling & Compounding

From PET bottle flakes to final PET granules, the recycled PET could be used for different applications depends on its IV level. PET fiber/Yarn PSF, POY, FDY, PET sheet, PET bottle, PET straps, PET film, Molding.

Types Of Twin Screw Extruders Offered

In order to meet the different requirements of the market, we provide three different types of dual screw extruders. Customers can choose the best suitable twin screw extruder based on their needs and applications.

CWT-Mega Twin Screw Extruder


CWT-Mega twin screw extruder is a super high torque twin screw extruder which competes with European machines. High stability, big output, lower unit energy consumption.

CWT-Plus Twin Screw Extruder


CWT-Plus twin screw extruder is the result of self-innovation, with our own modified high torque gearbox, making the capacity 40-50% higher, while the unit energy consumption is 20% lower than the last generation twin screw extruder.

CWT-Eco Twin Screw Extruder


CWT-Eco twin screw extruder is a low torque but is very competitive in performance/price ratio. It is widely used in plastics compounding & extrusion.

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Twin Screw Extruder Features

CWT-Mega Twin Screw Extruder

European gearbox (PIV, Zambello, Henschel) , the specific torque is big, making a more stable operation.

European safety clutch (Bibby,Compomac), enables aast protection for the machine.

German origins HIP materials, making the extruder parts more wear-resistance, &corrosion-resistance. Minimize the replacement time of parts, improve operation efficiency.

Optimized screw design, increase the output and reduce the energy.

CWT-Plus Twin Screw Extruder

Newly designed high torque gearbox, specific torque up to 10.6N.m/cm3.

Max. screw speed: 900rpm.

Uniform process for the screw and barrel in good geometry.

Efficient lubrication system for the gearbox.

Reliable safety clutch and interlock system enables the fast disconnection, protecting the machine.

Optimized screw profile, enables one machine for multi-application.

CWT-Eco Twin Screw Extruder

Maximum screw speed: 600rpm.

Various electric control systems.

Multi-pelletizing systems.

Competitive performance/price ratio.

Specifications of different CWT series

● CWT-Mega Twin Screw Extruder

Model CWT52-Mega CWT65-Mega CWT75-Mega CWT95-Mega CWT135-Mega
Screw Diameter(mm) 51.4 62.4 71 93 133
Screw Speed(rpm) 900 900 900 900 900
Motor Power(kw) 185 315 400 900 1300
L/D Ratio(Max.) 68 68 68 68 68
Output(kg/hr) 300-600 600-1300 800-2000 1200-3200 2500-6000

● CWT-Plus Series Twin Screw Extruder

Model CWT52-Plus CWT65-Plus CWT75-Plus CWT95-Plus CWT135-Plus
Screw Diameter(mm) 51.4 62.4 71 93 133
Screw Speed(rpm) 800 800 800 800 800
Motor Power(kw) 110 220 315 550 900
L/D Ratio(Max.) 68 68 68 68 68
Output(kg/hr) 200-400 500-1200 600-1500 1000-2500 2000-4000

● CWT-Eco Series Twin Screw Extruder

Screw Diameter (mm)51.462.47193133
Screw Speed (rpm)600600600600600
Motor Power (kw)5590132315650
L/D Ratio (Max.)6868686868
Output (kg/hr)150-270300-450400-600700-15001500-3000

Twin Screw Extruder Screw Configuration


COWELL applies Europe origin high torque gearbox for its CWT-Mega twin screw extruders. The quality and durability are more convincing to our customer who requires higher standard twin screw extruders for their application. There are some trustable and famous good quality gearbox brands we have cooperated with, such as Zamebllo, Henschel, PIV, etc.


The HIP material, which originated in Germany or the USA, is 4 times more wear-resistant than that common metals. In order to meet the requirements of good durability of screw and barrel, some higher quality materials will be used in our CWT-Mega twin screw extruder as well as CWT-Plus twin screw extruder to make the screw and barrel more wear-resistant, reduce the replacing time for the customer which can enable customer not only running the machine continuously but also save the maintenance time.


With a Europe high-quality gearbox, the Europe origins safety clutch is a must for the extruder. The quality, accuracy, torque and action time of Europe origins safety clutch are excellent enough to make sure your twin screw extruder is well protected when gets emergency incidents.


To make excellent masterbatches, mixing and dispersion is the critical factor. While the screw profile design determines the effect of mixing and dispersion of different components. COWELL professional technicians will give you a perfect screw profile design specially for your specific applications. 


As the energy crisis all over the world is facing, COWELL has dedicated its best to save energy by using different efficient heating systems for your extruders. 

The infrared heater has been tested for a few years on COWELL twin screw extruder, the result turns very efficient compared to the heating band. It not only speeds up the heating time but also the energy consumption could be 30%+ lower than traditional heating bands. 


COWELL has smart HMI monitoring & controlling system for the whole system without pushing different buttons and without any records.  

In this system, the screw speed, feeding rate, cooling, heating, etc will be controlled and monitored absolutely accurate. 

What’s more, you can save your different formulas and the operation data there, next operation will be easily taken out without resetting all parameters again. Easy access and operation are achievable. One key start.

A remote control function enables COWELL to help from the office to solve the issues.


COWELL team is extraordinary experience in various applications based on their rich working experience in the past decades. We could give perfect solutions to your requirements with our know-how on extruder design and material processing.
The most important is that a customized solution on your extruder project is available for you from our team. Any difficult process could be done on our lab extruder and analyse the possibility to make it succeed on the scale production extruder. Some special design which helps to make the qualified product are available here from us.
We not only provide extruder, but we provide the whole turn-key system for you. Making your product more competitive on the market. We create value for you.

We are extruder producer, and our customers have different requirements and abilities to afford the extruders. So we divide three types of twin screw extruders with different torque levels to meet the specific requirements for the customers with different requests.

Firstly, all the extruders sold will be guaranteed by COWELL. We will 12 months warranty after commissioning in the customer plant. And if customer delays to the start-up of extruders, we can make the guarantee time up to 18 months.

Secondly, COWELL team will use the best quality parts for the extruder, all parts will be strictly inspected before installed on your extruder. The quality, accuracy of parts could be guaranteed before installation.

Thirdly, when the extruder dispatched, all the designs, drawing, extruder specifications, will be filed , this will be very much helpful to capture all the details when we need to services for your extruder.

Forthly. All extruders delivered to customer will go with our detailed instruction manuals, including pre-start check up, operation steps, electrical check up, trouble shooting, etc. Customer could easily find out where the problem is, and reset the machine.

Lastly, we have on-line English speaking service engineers to guide you how to do the trouble shooting if you can not solve it. They are not only capable of solve your problem, but also you can get very valuable advice from them when you wanna do some new products.

Lead time varies according to the extruder model, applications and complex of the extruders
Normally we have large stock for the standard extruder parts, that will be done within a very shot time. If the machine is a totally customized, we need to confirm all the details before production in case any small mistake which could affect the final quality of the extruder. The possiblle lead time will be discussed between both parties.
We have different choices for transport of the extruder, sea freight, railway freight, air freight.
All the extruders will be well-packed by wooden boxes, further more, in order to avoid the rust of extruder parts, we will use the anti-rust oil for the screw & nuts which are easily get rusted during the sea freight, after that a plastic film will be wrapped around the extruder and other auxiliaries. With those well protection, we can make sure the extruder get to customer site at a brand new situation.

We have different steps to reach the final proposals
Step 1, we need customer to provide a basic needs information for the extruder, The raw materials they are gonna process on our extruder, a basic formula provided will help a lot for the proposals. The throughput they prefer to get from our extruder. For what purpose of the final products be used after get from our extruder.
Step 2, Our team will prepare for a basic proposal for the customer reference, if the customer have different ideas, we can discuss with each other to optimize the proposal until they are satisfied. During the discussions, more detailed information needed from customer,that depends on the different applications.

We have plenty of extruder parts in stock, for the standard parts, we can deliver them immediately by DHL. Customer could receive them with a very few days.
For the non-standard parts, we will produce them as priority, making the delivery time as fast as we can.
We normally give advice on spare parts list when quote the extruder, customer could select them according to their needs.

During the pandemic, we have updated our extruder connections, just to make sure customer could make it running easily and conveniently.
The extruder and auxiliaries will be carefully tested before delivery, we will send testing video to customer to show that the extruder is tested. If there is any problem, we will solve it immediately.

All the wire/cable connections will be by a fast aviation plug, customer dont need to connect those cables one by one, just plug in/out.

For PLC/ HMI control, we have remote control for the customer, if customer have any trouble on the machine operation, we can help to solve remotely.



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If you would like to have a question then get in touch today, we are ready to assist 24/7.