Expanded Silicone foams are used  mainly for their good stability at the highest temperatures, so that they keep good sealing properties also in large, hot lamps like those used in sport fields, large parking lots of airports and malls, railway lots etc.

Applying a Silicone foam is not very different from applying a PU in-situ formulation: the only important point is to keep the two well far away one another! Silicone has a dramatic effect on the PU foam’s cell structure, and a minimum contamination of silicone in a PU dosing line or mixhead brings a lot of troubles.

Cannon developed machines and heads good for both types of investors: those who work randomly with Silicone and Polyurethanes can buy a machine equipped with a four-component mixing head, where two lines are dedicated to the PUR and two to the Silicone chemicals. A short flush of the head at the end of a pouring cycle cleans the head from any residual of the unwanted chemicals and allows for an immediate use with the other, incompatible, formulation.

The manufacturers working permanently with a Silicone foam, instead, can use a new, simpler machine designed to handle these formulations: an Italian factory near Varese makes use of this new machine since the autumn of 2008, expanding their foam with Hydrogen.

Mixing occurs in a static mixer, disposable after a quite long sequence of injections.

For more information, please contact Afros Division's Sales Department