Bausano coextruders

Solutions for co extrusion and multilayer extrusion of polymers

Co extrusion solutions for engineering polymers

Bausano designs and manufactures co extruder machines engineered for integration into complete co extrusion lines dedicated to single-layer and multilayer applications. Co extrusion technology makes it possible to combine different materials within the same product while ensuring precise control of throughput, interlayer adhesion and dimensional stability throughout the entire co extrusion process.
Bausano co extruder machines process a wide range of thermoplastics and engineering polymers, including PVC, PU, PE, PP, PC, PA, PMMA, PSU, PBT, LCP, PLG, PEEK, FEP, ETFE and PVDF, meeting the requirements of the most demanding multilayer extrusion applications.
Each co extruder machine is configured according to the processed polymer, melt viscosity and required layer thickness. Compared with single-layer extrusion, the co extrusion process optimizes raw material consumption, integrates functional layers, reduces secondary operations and improves the overall performance of the finished product.
Bausano supplies both stand-alone co extruder machines and complete integration into a co extrusion line, ensuring coordinated management of temperatures, throughput and process parameters.

DESCRIBE YOUR NEEDS

Bausano COEX E-GO range

The COEX E-GO range is designed to satisfy different co extrusion and multilayer extrusion requirements.
Screw diameters range from 25 to 35 mm with L/D ratios from 25 to 30, configured according to the processed polymer and required layer thickness. Output depends on the processed material, reaching up to 80 kg/h for PE and up to 17 kg/h for PVC, with motor power ranging from 3 to 22 kW and total installed power up to 30 kW.
Configurations include up to four heating and cooling zones, ensuring stable thermal control, homogeneous melt quality and continuous flow, even in demanding multilayer co extrusion applications with thin functional layers.

The COEX E-GO range stands out for:

Easy integration into new or existing co extrusion lines
Stable throughput control for decorative and functional layers
Custom configuration according to the processed material
Compatibility with multi-channel dies for pipe and profile co extrusion

DESCRIBE YOUR NEEDS

Models	COEX E-GO25	COEX E-GO30	COEX E-GO30	COEX E-GO35
Screw diameters (mm)	25	30	30	35
L/D ratio	25	25	30	30
Production = war. Output PE (kg/h)	4	14	35	80
Production = war. Output PVC (kg/h)	7	17	-	-
Motor power (kW)	3	5,5	11	22
Cooling Zones	2	3	4	4
Heating Zones	2	3	4	4
Total installed power (kW)	5	11	19	30

Plastic co-extruders: how they work, how to choose them and the benefits they offer

What are plastic co-extruders and how to choose the right solution

Plastic co-extruders are machines designed to feed a co extrusion line, enabling two or more thermoplastic materials to be combined into the same product through the co extrusion process. Each co extruder machine operates in coordination with the main extruder, precisely controlling throughput, temperature and layer thickness to ensure process stability, uniformity and repeatability.
Different types of co extruder machines are available and can be configured according to the processed polymer, melt viscosity, number of layers and final application.
For this reason, selecting the right co extruder machine requires evaluating production output, compatibility with the existing co extrusion line, processed materials and the desired level of automation.
The cost of a plastic co extruder also depends on the configuration of the co extrusion line, production capacity and integrated technologies, making a customised solution the best choice for meeting specific manufacturing requirements.

What are the advantages of plastic co extrusion

Plastic co extrusion makes it possible to manufacture multilayer products in which each material performs a specific function, improving both product performance and production efficiency. In pipe co extrusion, multilayer pipes can be produced with co extruded identification stripes and functional layers providing different mechanical, chemical or barrier properties. In profile co extrusion, materials with different hardness, colours or surface characteristics are combined to manufacture window profiles with co extruded gaskets, UV-resistant components, abrasion-resistant surfaces and technical solutions for construction and industrial applications. In advanced sectors such as automotive, medical and chemical processing, co extrusion technology also enables the use of high-performance polymers. One of the main advantages of plastic co extrusion is the optimisation of raw material consumption by using engineering polymers only where required and standard or recycled materials in the inner layers. This approach reduces production costs per kilogram, improves the efficiency of the co extrusion line and guarantees consistent layer thickness, repeatable performance and reliable product quality during continuous production.

Frequently Asked Questions about Bausano Co-Extruders

What is the difference between an extruder and a co-extruder?

The main extruder generally produces the primary structure or core layer of the product, while the co-extruder feeds one or more additional materials into the extrusion die. These materials can create functional, protective, aesthetic or identification layers, depending on the final application.

Can a co-extruder be integrated into an existing extrusion line?

Yes. A co-extruder can be integrated into both a new line and an existing extrusion system, provided that the machine, extrusion die and control system are technically compatible. The configuration must be assessed according to the available space, the materials to be processed, the required output and the thickness of the layer to be produced.

Which materials can be processed with Bausano co-extruders?

Bausano co-extruders can be configured to process a wide range of thermoplastics and engineering polymers, including PVC, PE, PP, PU, PC, PA, PMMA, PSU, PBT, PEEK, FEP, ETFE and PVDF. Screw geometry, temperature control and machine configuration are selected according to the rheological and thermal properties of the material.

How is the thickness of each co-extruded layer controlled?

Layer thickness is controlled by coordinating the co-extruder output with the speed of the main extrusion line and the geometry of the multi-channel die. Stable feeding, precise temperature regulation and constant melt pressure are essential to achieve uniform and repeatable layers throughout continuous production

Which products can be manufactured using co-extrusion technology?

Co-extrusion technology is used to manufacture multilayer pipes, technical profiles, medical tubing, cables and other products requiring different properties within the same structure. Typical applications include identification stripes, UV-resistant surfaces, barrier layers, soft-touch sections, co-extruded seals and coatings resistant to abrasion or chemicals.

How do you select the correct co-extruder size and configuration?

The correct configuration depends on the polymer being processed, the required output, melt viscosity, layer thickness, number of layers and final product geometry. The characteristics of the main extrusion line and extrusion die must also be considered. For this reason, each co-extruder should be sized according to the specific production process, rather than selected only on the basis of its maximum output.

A starting point to define the right solution together

By filling in the form below, it is possible to describe specific technical or production requirements. The technical team will carefully evaluate the request in order to propose the most suitable extrusion line or extruder.