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Home > News > Extrusion

PVC extruder with dosing unit from battenfeld-cincinnati enables pipe production in Middle East

Source：Adsale Plastics Network Date ：2025-05-19 Editor ：RC
Copyright： This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

Extrusion unit with direct dosing from battenfeld-cincinnati enables the production of 3-layer PVC pipes with a highly filled middle layer in Bahrain Pipes, one of the largest pipe manufacturers in the Middle East.


battenfeld-cincinnati_PVC extruder with dosing unit.jpg


Twin screw extruder twinEX and coextruder conEX with permanently installed gravimetric dosing unit.

 

The key feature of the combination of parallel twin-screw extruder twinEX and co-extruder conEX is the permanently installed gravimetric dosing unit on the twinEX. It allows the direct processing of chalk, without premixing. This saves energy, minimizes wear, ensures reliable dosing and provides flexibility in the use of materials.

 

High filler contents are of great interest for the production of PVC pipes, as the material costs still make up a majority share of the production costs. Chalk contents of up to 65 parts (ppH) are quite common.

 

However, the high contents do not make production and dosing of the typically used premixes very easy. The high chalk content leads to increased machine wear due to its abrasiveness, both in the heating/cooling mixer and in the conveying lines. It can also lead to demixing before being fed into the extruder, which in turn leads to reduced material homogeneity.

 

With battenfeld-cincinnati’s sustainable machine solution, pipe manufacturers can now use premixes with a low chalk content and feed the remaining quantity directly into the extruder.

 

The standardized premix reduces wear in the heating/cooling mixer. It also allows higher overall outputs, as high chalk content enables longer mixing times and smaller quantities due to its large surface area. At the same time, the standard mix in combination with the dosing unit enables product-specific recipes to be configured on demand directly on the extruder.

 

To ensure a smooth process, the dosing unit is equipped with a closed chamber in which the chalk is kept in constant motion to prevent bridging and to guarantee dust-free operation. It is fed directly into the main extruder, the twinEX 93-34R. This is equipped with a specially adapted and wear-resistant screw geometry and ensures perfect homogenization of the middle layer.

 

The conical conEX NG 54 twin-screw extruder ensures shiny and absolutely smooth inner and outer layers for the up to 250 mm wastewater pipes. The line has recently been running at an output rate of 750 kg/h.


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Source：Adsale Plastics Network Date ：2025-05-19 Editor ：RC
Copyright： This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

Extrusion unit with direct dosing from battenfeld-cincinnati enables the production of 3-layer PVC pipes with a highly filled middle layer in Bahrain Pipes, one of the largest pipe manufacturers in the Middle East.


battenfeld-cincinnati_PVC extruder with dosing unit.jpg


Twin screw extruder twinEX and coextruder conEX with permanently installed gravimetric dosing unit.

 

The key feature of the combination of parallel twin-screw extruder twinEX and co-extruder conEX is the permanently installed gravimetric dosing unit on the twinEX. It allows the direct processing of chalk, without premixing. This saves energy, minimizes wear, ensures reliable dosing and provides flexibility in the use of materials.

 

High filler contents are of great interest for the production of PVC pipes, as the material costs still make up a majority share of the production costs. Chalk contents of up to 65 parts (ppH) are quite common.

 

However, the high contents do not make production and dosing of the typically used premixes very easy. The high chalk content leads to increased machine wear due to its abrasiveness, both in the heating/cooling mixer and in the conveying lines. It can also lead to demixing before being fed into the extruder, which in turn leads to reduced material homogeneity.

 

With battenfeld-cincinnati’s sustainable machine solution, pipe manufacturers can now use premixes with a low chalk content and feed the remaining quantity directly into the extruder.

 

The standardized premix reduces wear in the heating/cooling mixer. It also allows higher overall outputs, as high chalk content enables longer mixing times and smaller quantities due to its large surface area. At the same time, the standard mix in combination with the dosing unit enables product-specific recipes to be configured on demand directly on the extruder.

 

To ensure a smooth process, the dosing unit is equipped with a closed chamber in which the chalk is kept in constant motion to prevent bridging and to guarantee dust-free operation. It is fed directly into the main extruder, the twinEX 93-34R. This is equipped with a specially adapted and wear-resistant screw geometry and ensures perfect homogenization of the middle layer.

 

The conical conEX NG 54 twin-screw extruder ensures shiny and absolutely smooth inner and outer layers for the up to 250 mm wastewater pipes. The line has recently been running at an output rate of 750 kg/h.


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PVC extruder with dosing unit from battenfeld-cincinnati enables pipe production in Middle East

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