Film-coated metal plate

Abstract

The invention relates to a film-coated metal plate which comprises a metal plate body, a macromolecule adhesive film layer on the metal plate body and a TPO layer on the macromolecule adhesive film layer. The TPO layer comprises the following components: 20-100 parts of an ethylene-olefin copolymer; 10 to 40 parts of polypropylene; 5-30 parts of titanium dioxide; 0-40 parts of a filler; 0.1 to 2 parts of an antioxidant; and 0.1 to 2 parts of an anti-ultraviolet agent. The TPO layer and the metal plate are connected into a whole through the macromolecule adhesive film layer, the production process is simple, one-time forming is achieved, construction is convenient, operation is flexible, the construction period is effectively shortened, and the macromolecule adhesive film layer effectivelyavoids the environmental protection problem related to a traditional adhesive. A metal roofing board adopting the TPO layer can be designed with a durable life, and the conventional durable life is guaranteed for 10 years. The TPO layers of the adjacent steel plates are connected in a welded mode, and the problem that rivets are exposed outside and are prone to corrosion, so that the connecting strength is reduced is solved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a film-coated metal plate. Background technique [0002] At present, the basic structure of light steel roof: metal plate, vapor barrier layer, rock wool or extruded board, non-woven fabric, PVC or TPO waterproof membrane, and the wind resistance strength of the roof should be tested and stipulated in the construction design. The material construction method should be constructed in sequence according to the above-mentioned structural levels, and no structural material can be missing, and the cost of construction personnel is relatively high. [0003] At present, there are two main schemes for roof maintenance: one is to directly replace the damaged color steel plate; the other is to repair the color steel plate with full-stick PVC or TPO waterproof membrane after polishing and derusting the color steel plate. For the above-mentioned alternative, the cost of construction person...

AI Technical Summary

Problems solved by technology

For the above-mentioned alternative, the cost of construction personnel is relatively high, and the price of materials should not be underestimated

[0004] In addition, since the color steel plates on the roof are connected by rivets, and the rivets are exposed, the rivets will be corroded as the use time increases, resulting in a decrease in the connection strength

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