Composite flexible flashing band and preparation method thereof

Abstract

The invention discloses a composite flexible flashing band and a preparation method thereof and provides a waterproof auxiliary building material of a novel structure. The composite flexible flashing band consists of a membrane material substrate, a butyl rubber adhesive layer with an adhesive effect and a substrate from bottom to top, wherein the membrane material substrate refers to a fold shape which is formed by adopting a one-way extrusion mode, of which the number of the folds in every 10cm is not less than 80 and of which the stretch rate is not lower than 50 percent; and the thickness of the butyl rubber adhesive layer is 0.2-0.3mm. The invention also discloses a method for preparing the flashing band. The flashing band has the characteristics of excellent aging resistance, lasting adhesiveness, excellent tensile ductility, convenience in construction and capacity of effectively preventing water seepage and leakage.

Description

technical field [0001] The invention relates to an anti-flooding material used in flashing structures such as building exterior walls, doors and windows, metal roofs, large buildings, and quickly assembled houses. It is suitable for waterproofing projects of building bodies such as civil engineering and steel structures. Or the waterproof and breathable material can be used independently, and it can also be an important auxiliary material for the waterproof and breathable membrane used in construction. Background technique [0002] With the development of buildings, people have put forward higher requirements for the quality of the building of the living room and the waterproof and leakproof of the construction project. For example, in the existing exterior door and window projects (especially in curtain wall projects), the gap between the door and window frame and the wall is waterproofed with foamed polyurethane and sealant, but due to the different sizes of the gaps, foam...

AI Technical Summary

Problems solved by technology

Traditional building waterproof materials (flashing boards) cannot meet the waterproof requirements of this new type of roof

[0004] As another example, the internal insulation layer of the building curtain wall uses a waterproof and breathable membrane as a protective layer, and it needs to be matched with waterproof and breathable flashing belts for matching use. The existing waterproof node treatment technology

[0005] For another example, when the metal roof uses a waterproof and breathable membrane as an auxiliary waterproof layer, the above-mentioned existing waterproof node treatment technology cannot be used for nodes such as gutters, lighting belts, and fan outlets.

[0006] Existing metal flashing panels are made by sheet metal, stamping, and die forming, which have poor flexibility. Different shapes are required for each waterproof structure, and the cost is high

Existing plastic flashings are made by injection molding or drawing molding, and there are also problems of poor flexibility, many shapes, and poor adaptability, and the construction process is complicated

Existing metal flashings and plastic flashings are not breathable

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