INDIVIDUAL MULTI-LAYERED ROOFING TILE

Abstract

The invention relates to construction and can be used in the installation of roof coverings for industrial and public buildings and structures. A roofing tile comprises a lower protective layer made of polyethylene terephthalate and having a metallized base, a technical layer made of high-density polyethylene, a layer of cardboard, a heat and sound insulating layer made of polyurethane foam, and an upper protective layer made of polyethylene terephthalate. The metallized base is made of aluminum. The upper protective layer is painted throughout its entire thickness with modified UV stabilizers and fire retardant agents. The claimed invention provides enhanced heat insulating and sound insulating properties.

Claims

1. A roofing tile comprising a lower protective layer made of polyethylene terephthalate with a metallized base, a technical layer made of high-density polyethylene, a cardboard layer, a heat and sound insulating layer made of a polyurethane foam, and an upper protective layer made of polyethylene terephthalate.

2. The roofing tile according to claim 1, wherein the metallized base is made of aluminum.

3. The roofing tile according to claim 1, wherein the upper protective layer is painted over the entire thickness with modified UV stabilizers and flame retardants.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 shows a sectional view of a multi-layered roof tile.

[0013] The following items are presented in the FIGURE: [0014] 1metallized base; [0015] 2lower protective layer made of polyethylene terephthalate; [0016] 3technical layer made of high-density polyethylene; [0017] 4cardboard layer; [0018] 5heat and sound insulating inner layer made of polyurethane foam; [0019] 6upper protective layer made of polyethylene terephthalate.

DETAILED DESCRIPTION OF THE INVENTION

[0020] In the embodiment of the invention, a roofing tile contains a lower protective layer (2) made of polyethylene terephthalate with a metallized base (1) made preferably of aluminum (FIG. 1). Lower protective layer (2), serving also as a substrate for metallization, protects against mechanical damage, and the metallized base (1) reflects infrared radiation back inside the house (premises).

[0021] Technical layer (3) made of high-density polyethylene is placed upon the lower protective layer, and the cardboard layer (4) is laid-out on it. Heat and sound insulating inner layer made of polyurethane foam (5) is laid-out over the cardboard layer (4). Cardboard layer (4) absorbs the two-component polyurethane foam, thereby increasing adhesion to the high-density polyethylene layer (3), which in turn bonds the cardboard layer and the lower protective layer (2).

[0022] The upper protective layer (6) of polyethylene terephthalate is preferably painted over the entire thickness with modified UV stabilizers and flame retardants and is laid out on top of the heat and sound-insulating inner layer (5). The upper protective layer (6) weight is several times lower than that of metal or asbestos-cement sheets (used in analogous products). Note that the layer (6) is resistant to corrosion, mold and fungus do not grow on it; the layer (6) protects from external mechanical impacts and ultraviolet exposure, thereby increasing thermal insulation and soundproof properties. At the same time, a protective layer made of polyethylene terephthalate makes it possible to give the roofing a classical look of a roofing materialtiles.

[0023] Use of non-hygroscopic heat-insulating material of polyurethane foam in the form of heat and sound-insulating layer (5), which at the time of foaming and polymerization has strong adhesive properties, allows reliable connecting (bonding) the upper (6) and lower (2) protective layers of polyethylene terephthalate, strengthened by technical (3) and cardboard (4) layers.

[0024] Polymerized polyurethane foam, filling the entire internal volume of the product, gives rigidity to the resulting structure, which allows the roofing to withstand high loads (for example, when walking on the roof).

[0025] The inner layer (5) of two-component polyurethane foam assures low thermal conductivity of the product, high noise absorption, as well as filling the entire internal volume of the product, increasing its rigidity.