Inside CORIMA

[ame=“http://www.youtube.com/watch?v=pVYu421oELg&feature=share”]CORIMA, Inside CORIMA ! - YouTube[/ame]

Anyone have an idea about the white material that they use and rap the prepregs on it?
And what temperature this can accept?
Thank you

some foam core, for example Rohacell, it expands when heated

Thank you I will look for it