<http://schema.org/description>
"An unusual process uses uv radiation to cause microcellular foaming in narrow bands on the surface of thin t-butylacrylate/methylmethacrylate copolymer sheet."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/products/photo-chemical-foaming-raises-patterns-on-sheet>