This document discusses sheet applications in the construction field, focusing on PVC and polyolefin sheets. It describes the materials, technologies, and applications for manufacturing rigid and foamed PVC sheets as well as foamed polyolefin sheets using extrusion. Example applications discussed include coverings for houses, windows, doors, advertising boards, tents, containers, and barrages. The technologies described include multi-component dosing units, twin screw extruders, pre-cooling units, polishing roll stacks, and process controls. Market data on raw material consumption trends in Europe is also presented.