Conical Twin Screw Extruder – Complete FAQ Guide

A conical twin-screw extruder is a common and popular type of twin-screw extruder used in today’s manufacturing industry.

While this is a common type of twin-screw extruder, the conical twin-screw extruder is used differently due to its different structure.

Hence, you must understand the usage, working, and structure of the conical twin-screw extruder before purchasing one for your manufacturing business/factory.

We have discussed everything you need to know about the conical twin-screw extruder below in detail to help you in this.

So before making a purchase, it’s better to go through this guide and better understand the conical twin-screw extruder.

1. What is a Conical Twin Screw Extruder?

 

Fig 1: Conical Twin Screw Extruder

A conical twin-screw extruder is mainly a type of twin screw extruder.

Hence, this machine is also used in the manufacturing industry and consists of a two-screw structure.

However, it isn’t similar to other types of twin-screw extruders.

Instead, the conical twin-screw extruder is composed of:

• Barrel screw
• Gear transmission system
• Quantitative feeding
• Vacuum exhaust
• Heating, Cooling, and Electrical control components, etc.

While this is the basic structure of a conical twin-screw extruder, there can be more or fewer components depending on the usage requirements.

More advanced conical twin-screw extruders come with more advanced features and usage ease.

However, the conical twin-screw extruder is overall a reliable and efficient machine for the manufacturing process.

2. How is the Conical Twin Screw Extruder Better than Other Extruder Machines?

Fig 2: Conical Twin Screw Extruder Working Design

The conical twin-screw extruder has a different structure, making it a better extrusion machine for producing plastic products.

While the working of the conical twin-screw extruder may be relatively similar to the conventional single screw extruder and parallel twin screw extruder, but this machine has a different structure that makes it a better option.

This structure includes:

• A larger and unique feeding area
• A high compression ratio
• Higher shear and mixing efficiency ( mainly in the high percent caco3 PVC extrusion machine)
• Improved plasticizing characteristics/components.

Apart from these features of the conical twin screw extruder, the price of this type of extruder machine also makes it different from others.

When it come so the price of the parts/components present in a conical twin screw extruder, it’s screw barrel and gearbox consist of a relatively lower price as compared to the part of parallel twin screw extruder.

Mainly due to this reason, most of the clients that require twin screw extruder machine go for conical twin screw extruder, considering it a reliable and convenient option in terms of maintenance too.

3. How is a Conical Twin Screw Extruder Efficient?

The conical twin-screw extruder is composed of a different structure compared to the parallel twin-screw extruder (another type of twin-screw extruder).

This extruder machine mainly has a structure that makes the extrusion process more efficient and smooth.

This efficiency makes the conical twin screw extruder highly reliable and remarkable extrusion machine in comparison to the parallel twin screw extruder and the single screw extruder.

What adds more to its efficiency is the ability of the conical twin screw extruder to reduce the production cost. Simply by adding more calcium carbonate while producing PCV profiles, PVC flooring and pipes, the production cost can be reduced overall.

This makes it easier for businesses and production industries to manufacture and produce plastic products by following a budget-friendly process using the conical twin screw extruder.

4. What is the Main Usage of a Conical Twin Screw Extruder?

Fig 3: Conical Twin Screw Extruder for SPC Floor

 

While the conical twin-screw extruder is used in the manufacturing industries, this extruder machine’s main task is to manufacture plastic profile products, plastic pipe, plastic board and sheet products.

Additionally, the conical twin screw extruder can be used for following plastic extrusion business’s/lines:

• PVC foam board extrusion line
• PVC sheet extrusion line
• PVC pipe extrusion line
• PVC Profile extrusion machine
• PVC roof tile extrusion line
• PVC pelletizing line
• PE double wall corrugated pipe line
• This machine uses the high calcium PVC powder as the raw material for manufacturing plastic products. Hence, this does not only make it an efficient plastic extrusion machine, but also a cost-efficient extrusion machine option.

5. What are the Different Kinds of PVC Materials that can be Extruded through a Conical Twin Screw Extruder?

Fig 4: Industrial Conical Twin Screw Extruder

The conical twin-screw extruder is known to extrude and produce plastic products.

This machine mainly focuses on extruding PVC materials, which makes it suitable for manufacturing various PVC products.

When it comes the extrusion of different PVC materials, the conical twin screw extruder is can be used for the extrusion process of two types of PVC materials. This includes:

• CPVC
• UPVC

CPVC:

This is a less common type of PVC that can be extruded using the conical twin screw extruder. This type of PVC material is used to produce the conduit pipe.

UPVC:

In comparison to the previous PVC material, the UPVC is more common and widely used with the conical twin screw extruder.

What make this common is the numerous products that are manufactured using this PVC material.

Some of the common products/materials manufactured using this type of PVC includes:

• Drainage pipe
• Electrical cable
• Irrigation pipe
• Water supply pipe
• Flexible PVC pipe, etc.
• Window profiles
• Ceiling
• Wall panel

All in all, using a conical twin screw extruder, you can easily manufacture plastic products, since this extruder machine supports both types of PVC materials.

6. Can you Control the Plasticizing Rate of PVC in the Conical Twin Screw Extruder?

While conical twin screw extruders serve as a better extrusion machine for most of the clients and plastic manufacturing factories today, this machine also comes with specific controls.

It allows you to control the plasticizing rate of PVC while using the conical twin screw extruder.

By controlling the temperature of screws and barrels, the conical twin screw extruder, the user can easily control the plasticizing rate.

Due to this control, the conical twin screw extruder offers significantly lower amperage and higher power consumption at higher rpm.

This is another reason why the conical twin screw extruder works as a better extruder machine.

Moreover, this machine also allows the user to achieve a screw surface area similar to that of the parallel extruders.

This is possible in the newer and updated versions of the conical twin screw extruder, by lengthening the processing unit and reducing the taper of the extruder.

As a result, this extruder machine is not just a reliable option in terms of producing PVC products better.

But it also serves with better controlling options that can fulfill the demand of using parallel twin screw extruder for plastic extrusion in a better way.

7. How is the Structure of the Conical Twin Screw Extruder Different from Other Kinds of Twin-Screw Extruders?

Fig 5: Conical Twin Screw Extruder Structure in Factory

The conical twin screw extruder has two parts in gearbox, which are gearbox and separate box for two screws.

Apart from this, the conical twin screw extruder’s speed rate is very big. Therefore, the extruder can also work in the low speed.

Since its twin screw is conical, it will affect high pressure in the die head, so we can use more caco3 in the formulation to reduce the production cost.

Lastly, the Conical twin screw extruder also has vacuum system inside. This vacuum system can enhance the plasticizing for PVC powder.

8. What Makes a Conical Twin Screw Extruder a Reliable Extrusion Machine in Comparison to Other Similar Machines?

Fig 6: Parallel vs. Conical Twin Screw Extruder Design

While other types of twin-screw extruders are also used in the plastic manufacturing process, the conical twin-screw extruder serves as a more reliable and efficient option.

This extrusion machine is a more reliable and efficient option due to its great potential for developing various plastic and PVC products.

This potential increase is caused by the efficient and highly reliable flexibility of this machine.

Additionally, the conical twin-screw extruder also comes with:

• Cheap Production Cost: This helps lower the cost in the gearbox and conical twin screw barrel. As a result, this twin screw extruder machine serves as a more reliable machine for cheap ad reliable production demands.

These features make the conical twin-screw extruder a highly reliable and competitive extrusion machine compared to the competitive parallel extrusion symptoms and machines.

9. What is the Market Demand for a Conical Twin Screw Extruder?

Since the conical twin-screw extruder is widely used for various plastic extrusion processes, it serves as a highly reliable machine.

This ensures that you can use the conical twin-screw extruder for multiple plastic extrusion tasks, depending upon your manufacturing requirement.

However, the recent increase in the market-demand of the conical twin screw extruder is because this type of extruder can easily replace the previous twin screw extruders.

With that, this extruder machine offers a similar function and output as the previous twin screw extruder machine.

With these crucial factors making the conical twin-screw extruder a more reliable extrusion machine for all kinds of plastic and PVC manufacturing industries, it is obvious that the conical twin-screw extruder is a more reliable and popularly used extrusion machine.

Hence, the conical twin-screw extruder demand is globally higher than other types of screw extruder machines.

10. What are the Advantages of a Conical Twin Screw Extruder?

 

While the conical twin-screw extruder serves as a cost-efficient machine in the market, it also comes with various usage benefits.

These benefits make the conical twin-screw extruder a more reliable and suitable extrusion machine option for various factories.

https://www.youtube.com/watch?v=HBBsFj3uOPo

Some such benefits include:

• It also has an effective exhaust unit. This exhaust unit ensures that each conical twin-screw extruder’s manufactured product comes with an excellent surface finish. This enhances the outlook and efficient performance of the products that are manufactured with this machine.
• Lastly, its nickel-based alloy bimetallic oval liner offers another notable advantage of the conical twin-screw extruder. This liner serves in increasing the overall service life of the conical twin-screw extruder, making it a longer-lasting machine for any manufacturing industry.

11. What are the Different Types of Screw Extruders?

Fig 7: Parallel vs. Conical Twin Screw Extruders Screw Design

The types of screw extruders are numerous. Normally, this list of types starts with the single screw extruders and twin-screw extruders.

Here, the twin-screw extruder is a more popular and trusted extrusion machine due to its high capacity and better production efficiency.

However, most industries also utilize single screw extruders, for HDPE, PP, PC, PPR, PA material and products

Additionally, if we talk about the twin-screw extruders, then there are two further types of extruders.

This includes:

• Parallel twin-screw extruder
• Conical twin-screw extruder

While the parallel-twin screw extruder also serves as a reliable and efficient extrusion machine, due to its higher price in the production cost, not all customers accept it.

Therefore, most clients prefer choosing conical twin screw extruder.

Yet, when it comes to the big size parallel twin screw extruder, some technical components and screw barrels are not so matured in China.

Therefore, the gap between conical and parallel twin screw extruder is very small now.

12. What is the Capacity of a Conical Twin Screw Extruder?

Fig 8: Large Capacity Conical Twin Screw Extruders

The capacity of manufacturing PVC or plastic products of the conical twin-screw extruder depends mainly on its size.

If you’re investing in a larger conical twin-screw extruder, then it may manufacture up to 800 PVC or plastic products at a time.

Similarly, with the smaller conical twin-screw extruder, you can get as many as 80 products extrusion produces complete at a time.

Either way, the conical twin-screw extruder is a more efficient extrusion machine.

Therefore, it is a reliable extrusion machine for both small-scale and large-scale plastic manufacturing factories/businesses.

These are all the questions regarding the conical twin-screw extruder.

You can go through this guide to better understand what a conical twin-screw extruder is and how you can benefit from it in your manufacturing industry.

If you have any other queries, feel free to get in touch with us.