English to Czech Tech/Engineering Materials (Plastics, Ceramics, etc.)

Například zde:
http://cn.foamglas.com/en/building/products/foamglas_-_the_p...

Sand, recycled glass and other abundantly available materials are mixed to produce molten glass.
The glass is extruded in a hollow tube, then ground into a fine powder and mixed with carbon. It is put into moulds which pass through a *cellulating oven* which is heated to produce a glass block with millions of hermetically sealed glass cells .