LAMINATED SHEET CONTAINING A BITUMINOUS SLIP LAYER

摘要

A LAMINATED SHEET COTAINING A BITUMINOUS SLIP LAYER A laminated sheet containing a bituminous slip layer to reduce the negative friction force acting on the outer surface of a pile or other underground structure, characterized in that one surface of said slip layer is provided with a heatresistant layer and the other surface is provided with a water-absorbing release layer, an adhesive layer being present between the slip layer and the water-absorbing release layer, a roll of this sheet and the manufacture of this roll.