---
title: What Do You Choose, Tandem or Co-extrusion?
description: Both types have their advantages, but it's your particular situation that is decisive. Learn why this heating & plumbing pipe line configuration makes the case for tandem extrusion.
image: https://blog.maillefer.net/hubfs/Imported_Blog_Media/Composite+tandem-106-0613a.jpg
---

![Composite+tandem-106-0613a](https://blog.maillefer.net/hs-fs/hubfs/Imported_Blog_Media/Composite+tandem-106-0613a.jpg?width=1024&name=Composite+tandem-106-0613a.jpg)

#### Making the case for tandem with PCL //Extend

Both extrusion groups have their advantages, but favoring either a co-extrusion or tandem design may depend on specific productivity and maintenance considerations. In the case of a PEX-Al-PEX construction, the adhesive plus outer layer extruded in tandem may prove more efficient in certain situations. Two separate single-layer heads makes cleaning and product changes quicker than with one dual layer head.

- NMS 30-24D and MXC 60-24D extruders in tandem
- Two identical ECH 32/45 heads with classic single layer design
- Separate heads for independent cleaning cycles
- Faster cleaning time than with adhesive and PEX combined in one co-extrusion head
- Quicker set-up times.

**Alain Schiess  
**Product Manager, Heating & Plumbing Pipe Solutions  
[alain.schiess@maillefer.net](mailto:alain.schiess@maillefer.net)

 

 Topics: [Production cost](https://blog.maillefer.net/tag/production-cost), [Pipe & tube manufacturing](https://blog.maillefer.net/tag/pipe-tube-manufacturing)

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