DE20018657U1 - Plastically deformable cover material - Google Patents

Description

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Patent Attorney Dipl.-Ing. Lambert Eichelbaum

D-45659 Recklinghausen Krüppeleichen 6

Telephone: (02361)21091-2 · Fax: (02361) 22949 · E-mail: pa@eichpatent.de

27 Oct 2000 fle 2769a/00

Applicant:

Oscar Fleck

Industriestr. 12, D - 45711 Datteln

"Plastically deformable covering material"

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Description:

The invention relates to a plastically deformable covering material, in particular for the exterior of buildings in sheet, web or strip form, consisting of a grid-shaped metal element and a butylene substrate connected to it, which is provided with a self-adhesive layer covered by a protective film.

Such a plastically deformable covering material is known from EP 0 341 343 A2 in connection with a ridge or hip ventilation element in which an expanded metal grid with parallelogram-like openings is embedded in its central area with a fleece and in its two edge areas with a non-self-adhesive polyisobutylene film strip, with a linear self-adhesive layer being arranged on the underside of each of the free edge sides. The expanded metal grid consists of soft-annealed aluminum with very small openings. This means that the stretchability of the expanded metal grid in any direction is prevented from appreciably stretching by the polyisobutylene material passing through the openings, contrary to the information in claim 1. However, the elasticity of the side strips of this ridge and hip ventilation element is absolutely necessary in order to be able to adapt it to the adjacent, cross-folded roofing panels and to be able to stick it on using the linear self-adhesive layer.

In order to increase this adaptability, many experts have started to make these side strips from a

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pleated aluminum or copper strips, which are partially connected for adhesive purposes to a narrow butyl coating covered by a silicone protective layer. The object of DE 298 19 378 Ul shows such a structure. This object is not of the same type because it does not have a grid-shaped metal element, but a continuous one.

In addition, there are numerous other plastically deformable covering materials, such as a pleated lead strip according to EP 0 792 977 Al, or a composite material made of a pleated foil layer made of aluminum and an adhesive or non-adhesive material connected to it according to PCT/DK 95/00150.

Furthermore, a self-adhesive material web has become known from DE 298 06 536 Ul, which is made up of a self-adhesive layer consisting of a cover strip made of silicone on one side and a pleated carrier material made of a PE/PE copolymer on the opposite side. In addition to its complicated and therefore expensive structure, this cover material has the disadvantage of being stretchable in only one direction, namely across the pleats.

A much simpler and already proven construction of a covering material has become known from the non-generic DE 299 05 698 Ul, in which a pleated metal element made of lead, aluminum or copper is completely or partially filled on one side with a one-component adhesive/sealant based on butyl rubber and covered up to the apex line of the pleats in such a way that a self-adhesive

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A contact plane is created which is covered by a protective film. This plastically deformable covering material is superior to all previously known covering materials due to the large adhesive surface of the solid plastic butyl rubber and its simple structure, but it still has the disadvantage that it can only be stretched in one direction, namely across the pleats.

Furthermore, all of the above-mentioned covering materials have the disadvantage that they cannot be coloured on their visible surface due to the external metal surface or, in the case of the generic covering material, due to the externally arranged polyisobutylene film strip and thus cannot be colour-matched to the adjacent roof surfaces.

Based on this state of the art, the subject matter of the application is based on the task of creating a covering material of the type mentioned at the beginning that can be easily plastically deformed by hand, which ensures both complete covering and secure sealing of building gaps against rainwater, for example between the outer walls of a chimney or the frame of a skylight and the adjacent roof covering panels, and has a high degree of elasticity and deformability in all spatial planes even at low outside temperatures.

This object is achieved in connection with the generic term mentioned at the beginning by the fact that the

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Covering material made of a self-adhesive butylene substrate and the grid-shaped metal element consists of an expanded metal grid or rabbit wire rolled into it with hexagonal openings with a width of up to 30 mm and the butylene substrate is covered with a thin stretch film on its surface facing away from its self-adhesive contact surface, wherein, depending on the thickness of the butylene substrate, the width of the openings and the wire thickness of the grid-shaped metal element are dimensioned such that, on the one hand, the covering material can be easily deformed by hand and, on the other hand, the deformation forces of the grid-shaped metal element are greater than the restoring forces of the butylene substrate.

This design means that the entire surface and not just a partial surface of the covering material as in the prior art is made as a self-adhesive surface, namely from a self-adhesive butylene substrate, and the grid-shaped metal element is provided with relatively large hexagonal openings that allow the covering material to be stretched and deformed in all spatial planes. In order to be able to easily deform this covering material on the other side of the self-adhesive surface by hand and to be able to conform to the respective building gaps, this surface is covered with a thin stretch film. This stretch film prevents the sheet, sheet or strip-shaped butylene substrate from sticking to the user's hand. In order to match the mesh size and the wire thickness of the grid-shaped metal element to the respective thickness of the butylene substrate, the restoring forces emanating from the latter are compensated. This

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the covering material retains its deformed shape after deformation in a manner that is no longer comparable with the state of the art. The stretch film follows this deformation without increasing the deformation forces and without tearing, thus allowing the hand pressure surface to come into contact with the self-adhesive butylene substrate.

And finally, this covering material can be adapted to the respective building gaps in such a way that depressions or corrugations in which precipitation can collect are prevented without any supporting joint bridge. Due to the metal element to be dimensioned according to the invention, this covering material can be adapted to the building gaps in such a way that a safe and complete drainage of the precipitation is always ensured, as well as complete sealing of the contacting building surfaces.

After removing the protective film from the self-adhesive contact surface, the plastically deformable covering material can be pressed directly by hand against the surface to form a seal, whereby its self-adhesive properties create a direct connection with the various surfaces made of stone, wood, metal or plastic. This connection is waterproof and can withstand the temperature changes involved over the long term.

According to an advantageous development of the invention, depending on the respective thickness of the self-adhesive

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Butylene substrate, the mesh-shaped metal element may consist of an aluminium or copper mesh or a rabbit wire with openings of 8 mm to 30 mm in size and a wire thickness of 0.3 mm to 1.5 mm. 5

If the covering material only needs to be deformed slightly, e.g. at the base of vents on flat roofs, the grid-shaped covering element can also be replaced by a plastic grid to increase the tear resistance. 10

The invention also allows for several embodiments when attaching the grid-shaped metal element within the butylene substrate:

According to a first embodiment, the grid-shaped metal element is rolled into the self-adhesive contact surface. The contact surface here means the surface that is opposite the surface covered with a stretch film. This means that it is the surface with which the covering material is pressed against the contacting building surfaces and is thus stuck in place without additional adhesive.

According to a second embodiment, the grid-shaped metal element is rolled into the surface of the butylene substrate opposite the self-adhesive contact surface before the stretch film is applied. In this embodiment, the entire self-adhesive contact surface is available for bonding and is not, as in the first embodiment,

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the area of the rolled-in lattice-shaped metal element is reduced.

According to a third embodiment, the grid-shaped metal element is rolled in sandwich form between two strips of self-adhesive butylene substrate.

In order to protect the large, self-adhesive contact surface of the covering material from unwanted adhesion to any counter surfaces before it reaches its destination, the protective film for covering the self-adhesive contact surface consists in a known manner of a thin silicone paper, which is advantageously made up of several, mutually overlapping strips. This means that the silicone paper can be stuck to the contact surfaces of the building materials in strips and successively during the individual phases of the work process. For example, in the case of a building gap between a chimney and the adjacent roof covering panels, the covering material is first stuck to the upper chimney surface and the silicone paper strip is only removed there. This is followed by stretching, deformation and clinging to the contact surfaces of the adjacent roof covering panels. Only then are the remaining silicone paper strips pulled off the self-adhesive contact surface of the covering material and the covering material is also pressed against the adjacent contact surfaces at the other end area.

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According to an advantageous development of the invention, the stretch film consists of a thin PVC film with a thickness of 20 μιλ. This film therefore not only has a high stretchability, but is also suitable for any type of paint in order to be able to adapt the covering material to the color of the surroundings of its installation location.

A one-component adhesive based on butyl rubber has proven to be particularly advantageous for the self-adhesive butylene substrate; it has the following technical data:

Color = Black,

Consistency = tough-plastic-sticky,

Density = at 23° C approx. 1.05 g/cm ³ ,

Dry matter content = greater than 99%,

Penetration = approx. 50 1/10 mm (cone 150 g; 6 sec.; 20 ⁰ C),

Paint discoloration = none with baked enamel

(Operating temperature -40 ⁰ C to 100 ⁰ C).

Several embodiments of the invention are shown in the drawings, in which:

Fig. 1 is a perspective top view of a structural gap between a chimney and the adjacent roof covering panels, which is covered and sealed with the covering material,

Fig. 2 shows the section along the line II/II of Fig. 1 in an enlarged view,

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Fig. 3 is a sectional view of a first embodiment of the covering material, in which the grid-shaped metal element is rolled into the surface of the self-adhesive butylene substrate opposite the self-adhesive contact surface before the stretch film is applied,

Fig. 4 is a plan view in the direction of arrow IV of Fig. 3,

Fig. 5 is a sectional view of a second embodiment of the covering material, in which the grid-shaped metal element is rolled into the self-adhesive contact surface and is located slightly below this contact surface,

Fig. 6 the top view in the direction of arrow VI of Fig. 5, 15

Fig. 7 is a sectional view of a third embodiment of a cover element in which the grid-shaped metal element is rolled in sandwich form between two strips of self-adhesive butylene substrate.
20

Fig. 8 is a plan view in the direction of arrow VIII of Fig. 7,

Fig. 9 is a sectional view of a fourth embodiment of the covering material, in which the grid-shaped metal element is rolled flush into the self-adhesive contact surface,

Fig. 10 is a plan view in the direction of arrow X of Fig. 9. In the first embodiment of Figs. 3 and 4, the

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The covering material, generally designated 1, consists in its central region of a one-component adhesive based on butyl rubber 2, the completely self-adhesive contact surface 2a of which is covered by a protective film 3 made of thin silicone paper, which is formed by several mutually overlapping strips. This overlap is not shown in Fig. 4. On its side 2b opposite the self-adhesive contact surface 2a, the one-component adhesive 2 is covered by a stretch film 3, advantageously by a thin PVC film with a thickness of 20 μm. However, before this stretch film 4 is applied, the metal grid 5 is rolled into this side 2b and ends flush with the surface of this side 2b. This embodiment has the advantage that the entire contact surface 2a is available as an adhesive surface and is not reduced by a partial wire surface.

In Fig. 4, the grid-shaped metal element 5 is only indicated by dashed lines, whereby the dashed line thickness does not correspond to the actual thickness of this grid. The approximate size ratios of the single-component adhesive 2 in relation to the protective film 3, the stretch film 4 and the thickness of the metal grid 5 can be seen in Figs. 3, 5, 7 and 9.

In the second embodiment according to Figs. 5 and 6, parts that correspond to the first embodiment in Figs. 3 and 4 are designated with the same reference numbers. In this embodiment, the grid-shaped metal element is rolled into the self-adhesive contact surface 2a. However, this rolling is not done flush, but deeper into the one-component adhesive 2, whereby knob-like elevations 2c are formed on the contact surface. As can be clearly seen

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As can be seen from Fig. 5, the size of the self-adhesive contact surface 2a is reduced by these knob-like elevations 2c and the webs of the grid-shaped metal element 5 located therebetween. In order to obtain a completely continuous adhesive surface at the edge areas, in this embodiment a strip 6 and 7 free of metal elements is arranged on both long sides in order to obtain a continuous self-adhesive contact surface 2a. The side edges 6a and 7a are advantageously overlapped by the protective film 3 in order to exclude contact with the hands of a user during the deformation process.

In the third embodiment according to Figs. 7 and 8, the grid-shaped metal element 5 is rolled between two equally thick strips of self-adhesive butylene substrate 2. As a result, it is located approximately in the middle area of this one-component adhesive 2. The contact surface 2a of the one-component adhesive 2 is covered here by the protective film 3 and the opposite side 2b by the stretch film 4. In this embodiment, too, similar to the embodiment in Fig. 3, the contact surface 2a has no surface impairments due to the grid-shaped metal element 5, so that its entire surface is available for bonding to building surfaces. In this embodiment and in the embodiment in Figs. and 4, the protective film 3 can of course overlap the side edges 2d and 2e, which was not shown in the present case.

In the fourth embodiment of Fig. 9 and 10, the structure is similar to the embodiment of Fig. 5 and 6,

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but with the difference that the metal grid 5 is flush with the contact surface 2a of the one-component adhesive 2. In this embodiment, metal grid-free edge strips 6 and 7 are arranged in the edge zones, which are overlapped at their longitudinal edges 6a, 7a by the protective paper film 3. This prevents the handling of this covering material 1 from being impaired by undesirable sticking, be it to the user's hands or to any building surfaces, before it reaches its intended location.

The stretch film 4 advantageously consists of a thin PVC film with a thickness of only 20 μπα, which means that it can follow any stretching of the one-component adhesive 2 without tearing. In addition, it enables the covering material to be deformed, pressed, stretched, rolled and clung to in a pleasant and ergonomically favorable manner without these processes impairing the adhesive effect of the one-component adhesive 2.

In order to clarify the size relationships, Fig. 3 shows the thickness D of the self-adhesive butylene substrate 2, the thickness d of the grid-shaped metal element 5, the thickness d _p of the covering silicone paper strip 3 and the thickness do of the stretch film 4. In an advantageous embodiment of the invention, the following size relationships have proven to be advantageous with an aluminum metal grid 5: D = 3 mm,
d = 1 mm,
dp = 0.14 mm
Thu = 8 pm.
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Depending on the thickness D of the self-adhesive butylene substrate 2, the thickness d of the metal grid and the width W of the individual mesh openings must be varied. The thickness do of the stretch film and the thickness d _p of the covering silicone paper strip 3 can be retained.

In Fig. 1 and 2, an application of the covering material is shown for sealing a structural joint 8 between the adjacent surfaces 9a of the roof covering panels 9 and a wall 10 of a chimney 11. To apply it, first the silicone strip 3 is peeled off the self-adhesive contact surface 2a near the zone 12 and the covering material 1 is pressed firmly against the wall 10 of the chimney 11. Due to the self-adhesive butylene substrate, the covering material 1 adheres directly and watertight to the wall surface 10. It is then adapted to the shape of the roof covering panels 9 in the other area 13 and provided with a snug groove 15 in its central area 14 so that the rainwater can flow continuously towards the eaves.

The remaining silicone strips 3 are then removed and the covering material 1 in the area 13 is pressed firmly against the surface of the roof covering panels 9. This completes the assembly according to Fig. 1.

The covering material according to the invention is ideally suited for delivery in endless rolls and, due to its deformability in practically all directions, can also be used around building corners 16, such as the chimney corner 16 in Fig. 1.

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without the need to separate the covering material 1 into two abutting or overlapping strips.

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List of reference symbols

Covering material 1

Butylene substrate 2

Contact surfaces of the butylene substrate 2 2a, 2b Side edges of the butylene substrate 2 2d, 2e Protective film 3

Stretch film 4

Metal grille openings of the metal grille 5

20 metal element-free strips of the cover element 1

Side edges of the strips 6, 7 Building joint 8

Roof covering plate 9

Area of roof covering plate 9 9a

5 7 5a 7a 6, 6a,

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Wall of a fireplace Fireplace

Zones of the covering material 1 10 11 12, 13,

throat

15

Width of the hexagonal openings 5a of the metal grid

Thickness of butylene substrate 2

Thickness of metal mesh 5 Thickness of PVC film Thickness of protective film 3

do

dp

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Claims (9)

1. Plastically deformable covering material, in particular for the outside area of buildings in sheet, web or strip form, consisting of a grid-shaped metal element and a butylene substrate connected to it, which is provided with a self-adhesive layer covered by a protective film, characterized in that the covering material (1) consists of a self-adhesive butylene substrate (2) and the grid-shaped metal element consists of an expanded metal grid (5) or rabbit wire (5) rolled into it with hexagonal openings (5a) with a width (W) of up to 30 mm and the butylene substrate (2) is covered with a thin stretch film (4) on its surface (2b) facing away from its self-adhesive contact surface (2a), the width (W) of the openings (5a) and the wire thickness (d) of the grid-shaped metal element (5) being dimensioned depending on the thickness (D) of the butylene substrate such that on the one hand, the covering material (1) can be easily deformed by hand and on the other hand, the deformation forces of the grid-shaped metal element (5) are greater than the restoring forces of the butylene substrate (2). 2. Plastically deformable covering material according to claim 1, characterized in that the grid-shaped metal element (5) consists of an aluminum or copper grid or a rabbit wire with openings with a size of 8 mm to 30 mm, a wire thickness (d) of 0.3 mm to 1.5 mm. 3. Plastically deformable covering material according to claim 1 or 2, characterized in that the grid-shaped metal element (5) is rolled into the self-adhesive contact surface (2a). 4. Plastically deformable covering material according to claim 1 or 2, characterized in that the grid-shaped metal element (5) is rolled into the surface (2b) of the butylene substrate (2) opposite the self-adhesive contact surface (2a) before the application of the stretch film (4). 5. Plastically deformable covering material according to claim 1 or 2, characterized in that the grid-shaped metal element (5) is rolled in sandwich form between two strips of self-adhesive butylene substrate (2). 6. Plastically deformable covering material according to one of claims 1 to 5, characterized in that the stretch film (4) is formed from a thin PVC film with a thickness (d) of 20 µm. 7. Plastically deformable covering material according to one of claims 1 to 5, characterized in that the protective film (3) for covering the self-adhesive contact surface (2a) consists in a manner known per se of a thin silicone paper which is formed by several mutually overlapping strips. 8. Plastically deformable covering material according to one of claims 1 to 7, characterized in that the visible outer surface of the stretch film (4) is colored with a color corresponding to the environment of its installation location. 9. Plastically deformable covering material according to one or more of claims 1 to 8, characterized in that the self-adhesive butylene substrate (2) consists of a one-component adhesive based on butyl rubber and has the following technical data:
Color = Black,
Consistency = tough-plastic-sticky,
Density = at 23°C approx. 1.05 g/cm ³ ,
Dry matter content = greater than 99%,
Penetration approx. = 50 1/10 mm (cone 150 g; 6 sec.; 20°),
Paint discoloration = none with baked enamel (operating temperature -40°C to 100°C)