Membrane forming production line Modified bitumen mixing system Hot oil conductor furnace ... .4, Surfacing:sand, slate flakes , PE film, aluminum foil One side: PE film; another side: sand or slate flakes PE ... film on both sides. Embossed or plain.5, Specification ... mm.Width: 1m, length: 10 m6, Speed of the production line: 0-25 m/min adjustable, Mechanical speed 12m/min7, ...