DEX-Foam is a high pressure gas injection (N2) based on ultrasonic injection principle.
Thanks to a gas mass flow controller, the expansion rate of the product can be accurately controlled and is independent of gas booster fluctuations as well as easily programmable by the extruder control system.

A specialized screw profile provides a homogeneous mixing of gas in the screw channels as well as uniform melt temperature.

This results in a uniform and regular cell structure and good expansion rate stability.

Main advantages of this process are:

• Good stability
• Reproducible process
• Quick time to stability
• Flexible process
• Easy to tune
• Reliable
• Cost effective
• Adaptable on existing installations
• No pollution

It is suitable for PE, FEP and has been successfully installed on mini-coax, micro-coax and LAN cable production lines.

Some features of this process have also been used for production of EPS trays for packaging applications.