DE20015742U1 - Rollable sealing tape for pan roofs - Google Patents

Description

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ROLLABLE SEALING TAPE FOR PANEL ROOFS

The invention relates to a rollable sealing tape for tile roofs according to the preamble of claim 1.

DE 40 01 766 describes a rollable ridge or hip ventilation element for tiled roofs, consisting of an air-permeable, rain and snow-proof fleece with wave-shaped edge sections. This wave contour allows the ventilation element to be adapted to the surface contours of the roof tiles. Adhesive cords on the underside of the edge sections allow it to be fixed to the roof tiles.

This fleece solution with corrugated edges was by far the most cost-effective solution at the time. Various cheap solutions followed, e.g. with corrugated aluminum sheet with ventilation slots.

DE 44 04 150 discloses a ventilation strip made of e.g. 0.7 to 1 mm thick aluminum for ventilating an eave, a ridge or a hip of a roof. In order to be able to be shaped to the contour of profiled roof covering panels, it is fitted with a rigid middle section with an edge part that can be stretched in the longitudinal direction of the ventilation strip and has rows of slots that are offset from one another and run in the transverse direction of the ventilation strip. In order to prevent even very small animals or drifting snow from penetrating, a cover made of air-permeable material that can be stretched in the longitudinal and transverse directions and has very small openings such as a knitted fabric or a fleece is provided in the stretchable edge part.

This well-known ventilation strip made of relatively thick aluminum sheet is stiff and can only be rolled up with a large winding radius. Reinforcements made of rigid PVC on the edges of the rigid middle section provide additional stiffening, which makes it more difficult to roll up.

Market research has shown that only a new, extremely inexpensive product will have a chance on the market in the medium term. The invention is therefore based on the task of creating a rollable sealing tape for tiled roofs that can be manufactured inexpensively and processed cost-effectively.

This object is achieved according to the invention with a rollable sealing tape for tile roofs, as characterized by claim 1. Further developments of the invention are described in the subclaims.

The rollable sealing tape according to the invention consists of a thin, rain and snow-proof film material such as metal, fleece or plastic. Felt and foam materials are also suitable. The edge part or parts are cut essentially transversely to the longitudinal direction of the tape, which allows an expanded metal-like stretching and thus shaping to the roof tile contour. Extremely thin film materials of less than 0.3 mm and preferably with a thickness of 0.1 mm or less are used. Tearing in the stretchable edge parts can be prevented if the carrier film is provided with a tear-resistant coating, such as a polyester coating, or by folding the slit edge parts twice or even three times over one another and connecting the individual layers with a thin plastic sealant.

The invention is explained in more detail below with reference to the accompanying drawings.

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Figure 1 shows a plan view of a rollable sealing strip according to the invention with slotted edge parts;

Figure 2 shows a perspective view of a rollable sealing strip with slotted edge parts which are impregnated with a plastically deformable sealant;

Figure 3 shows the sealing tape of Figure 2 in cross section;

Figure 4 shows in cross section the sealing strip of Figures 2 and 3, but with recessed ventilation holes between the edge parts;

Figure 5 shows a plan view of a rollable sealing strip corresponding to Figure 1, but with ventilation slots between the edge parts;

Figure 6 shows an enlarged cross-section of a double edge part whose layers are connected with a plastic sealant;

Figure 7 shows an enlarged cross-section of an edge part folded in three layers, the individual layers of which are thinly connected with a plastic sealant and

Figure 8 shows an enlarged cross-section of an edge part corresponding to Figure 7, which is covered with a thin fleece on the top and equipped with an adhesive strip on its underside.

The rollable sealing tape according to the invention consists of a thin, rain and snow-proof film material. The material of these films can be metal, e.g. copper or aluminum,

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a nonwoven fabric or a plastic film. Both edge parts 1 and

2 are cut essentially transversely to the longitudinal direction of the strip, whereby an expansion or deformation similar to an expanded metal mesh is possible. According to Figures 2 and 3, the expandable edge parts 1, 2 are covered with a plastically deformable sealant

3. This can be butyl rubber, hot melt adhesive or a similar material that is extremely thin but still ensures sufficient sealing. In addition, this mass can either be self-adhesive or have an adhesive on the underside. This means that the sealing tape can be adapted to the contour of the roof tile and glued on.

In the simplest case, such a sealing tape can be made from 0.1 mm aluminum sheet, for example, if no ventilation function is required. For ventilation purposes, an air-permeable film material such as PP fleece can be selected or, if the material is not permeable to air by itself, further slots 4 (Figure 5) or necklines 5 (Figure 4) or larger ventilation holes, which can be covered with thin fleece, can be made in the sealing tape outside the edge parts 1,2.

When stretching and shaping the cut edge parts 1,2 of the thin foil material, there is a risk of tearing. For example, the tear resistance of a thin Al or Cu foil can be increased enormously by using a polyester coating. A painted Al foil with a thickness of 23 µm and a polyester coating of 20 µm can be used to create a light but functional sealing membrane.

In order to make the edge parts 1,2 sufficiently tear-resistant with thin carrier films, these edge parts can also be doubled and folded into three layers, as shown in Figures 6 to 8. The individual layers can be thinly coated with

According to Figure 8, it is possible to cover the surface of the edge parts 1, 2 with a thin fleece 7 which has been made stretchable by creping and to coat it with a stretchable, weather-resistant varnish, e.g. acrylate. In addition, an adhesive strip 8 can be provided on the underside.

In order to keep the folded edge area tight even without an intermediate layer up to approx. 30% stretch, the slits of the folded layers must be offset so that the webs cover the mesh alternately. This means lower costs due to material savings and greater durability, since only metal is used.

In order to reinforce the edge area and at the same time limit the stretching, an aluminum sheet strip can be inserted between the folded layers, which has previously been corrugated and then rolled flat. Depending on the height of the corrugation, the stretch reserve can be set from 0 to approx. 100%. The cross-section of the sheet strip is approx. 20 x 0.1 mm. At the same time, it covers the mesh in the edge area of approx. 20 mm that is to be stretched the most. This means that the material of the sealing tape can be relatively thin and does not need to be particularly
be tear-resistant.

Claims (10)

1. Rollable sealing tape for tile roofs made of thin, rain and snow-proof film material such as metal, fleece or plastic, with an edge part or edge parts that can be shaped to the roof tile contour, characterized in that - the foil material is a thin fleece or a thin Al or Cu foil of less than 0.3 mm, - the edge part or parts ( 1 , 2 ) are cut offset substantially transversely to the longitudinal direction of the strip, whereby an expansion similar to expanded metal is possible, and - that the slotted edge part(s) ( 1 , 2 ) are reinforced to increase the tear resistance. 2. Rollable sealing tape according to claim 1, characterized in that the Al or Cu foil has a thickness of 0.1 mm or less. 3. Rollable sealing tape according to claim 1 or 2, characterized in that the Al or Cu foil is provided with a coating such as a polyester coating at least in the edge parts ( 1 , 2 ) to increase the tear resistance. 4. Rollable sealing tape according to one of claims 1 to 3, characterized in that the slotted edge part or parts ( 1 , 2 ) are doubled or folded onto one another in three layers to increase the tear resistance. 5. Rollable sealing tape according to one of the preceding claims, characterized in that the slots in the folded layers of the edge parts ( 1 , 2 ) are arranged offset from one another, so that the webs alternately cover the meshes. 6. Rollable sealing tape according to claim 4, characterized in that the folded layers of the edge parts ( 1 , 2 ) are thinly connected with a plastic sealant ( 6 ). 7. Rollable sealing tape according to claim 4, characterized in that a thin, previously corrugated and then flat-rolled sheet metal strip is inserted between the folded layers of the edge parts. 8. Rollable sealing tape according to one of the preceding claims, characterized in that the edge part or parts ( 1 , 2 ) are covered with a thin fleece ( 7 ) which is made stretchable by creping or the like and is coated with a stretchable, weather-resistant varnish, e.g. acrylate. 9. Rollable sealing tape according to one of the preceding claims, characterized in that the Al or Cu foil has, outside the edge parts ( 1 , 2 ), further slots ( 4 ), necklines ( 5 ) or larger ventilation holes which are covered with thin, air-permeable fleece or the like. 10. Rollable sealing tape according to one of the preceding claims, characterized in that the edge part or parts ( 1 , 2 ) are coated or impregnated with a plastically deformable sealing material ( 3 , 6 ) such as butyl rubber, hot melt adhesive or the like, which is provided with an adhesive on the underside.