1. 
   foamcore
   Also called foamboard, foamcore is a sheet material consisting of a layer of foam sandwiched between two layers of paper. See this article for information on how to use it.
   Found op http://www.terragenesis.co.uk/glossary.php?id=foamcore
   
   
2. 
   Foamcore
   Foam core or Foam board is a very strong, lightweight and easily cut material used for the mounting of photographic prints, as backing in picture framing, in 3D design, and in painting. It is also in a material category referred to as "Paper-faced Foam Board". It consists of three layers — an inn...
   Found op http://en.wikipedia.org/wiki/Foamcore
   
   
3. 
   Foamcore
   Polystyrene which is sandwiched between paper. It is used to relectors, soft boxes, and other items because it is stable and easily cut. (Grip/Lighting)
   Found op http://www.filmland.com/glossary/Dictionary.html#A
   
   

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