Polyurethane waterproof roll, production equipment and process, composite waterproof layer and practice thereof

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of building waterproofing, in particular to a waterproof coiled material, a composite waterproof layer and a method thereof, as well as production equipment and a production process of the waterproof coiled material. Background technique [0002] The domestic waterproof industry has been developed for a long time, and various new materials and new processes emerge in an endless stream. However, the leakage rate of building waterproofing is still high. In July 2014, China Building Waterproof Association and Beijing Zero Point Market Research and Analysis Company jointly released the "2013 National Building Leakage Survey Project Report", which showed that the leakage rate of building roof samples reached 95.33%; the leakage rate of underground building samples reached 57.51%; the leakage rate of household samples reached 37.48%. [0003] Waterproof membrane and waterproof coating are the two most important a...

AI Technical Summary

Problems solved by technology

The single-component polyurethane coating layer on both sides of the coil does not penetrate to form a whole, and its wrapping effect cannot be realized, and there is a risk of separation and damage after long-term use between the reinforcement layer and the polymer sheet layer

[0022] It can be seen that the polyurethane waterproof coating and the "polyurethane" related waterproof coils involved in the above-mentioned prior art still cannot form a reliable composite waterproof layer.

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