METHOD FOR THE IMPLEMENTATION OF STRATEGIC EXPANSIVE POLICY MATERIALS

摘要

The present invention concerns layered foamed polymeric materials lacking discontinuities at the interface between the layers and a preparation process thereof comprising the following steps: - providing a foamable polymeric material; - solubilising said one or more foaming agents in the foamable polymeric material under pressure and at a temperature greater than 20°C; and - releasing the pressure instantaneously; where the solubilisation step is carried out with a pressure profile of said one or more foaming agents that is variable over time.