... to adopt provisions concerning the classification of a product put up in rolls consisting of two sheets bonded one to the other, the one of semi-bleached kraftboard with a weight of 320 g/m2 and coated on both faces with a layer of polyethylene (14 and 18 g/m2 respectively), and the other of aluminium with a weight of 26 g/m2 and of a thickness of less than 0 720 mm, coated on the outer face with a layer of polyethylene (35 or 50 g/m2).