The invention provides a
polyurethane waterproof roll, production equipment and process, a composite waterproof layer and practice thereof. A method of achieving the composite waterproof layer comprises the steps that firstly, underlayer
polyurethane waterproof
coating is manufactured, then the upper-layer
polyurethane waterproof roll is manufactured, and the
coating and the roll are bonded into an organic integrity which has certain interface shearing and peeling strength by the
coating. Through the polyurethane waterproof roll, the solidification and film forming process of the polyurethane waterproof coating which is achieved at the construction site previously is moved forward, the polyurethane waterproof roll is produced ready in a factory through special equipment, the thickness is uniform and consistent, and the category and function are diversified. By means of seamless connection characteristic of the coating and uniform thickness characteristic of the roll, quality of a
waterproofing project can be improved. The practice has the advantages that the coating and the roll are compatible in material property, the coating is smooth to cure and large in cohesive force, the cohesion between the coating and a substrate is powerful, the roll is tight to overlap or in
butt joint, the coating is bonded to the roll sufficiently, the construction site demands no
open fire or electrical heating operation, the safety,
energy conservation and
environmental protection are achieved, and the characteristic of '
liquid rubber' of the polyurethane material is given full play.