DE202018102457U1 - Moisture barrier for building waterproofing - Google Patents

Abstract

Moisture barrier (2) for sealing against ingress of moisture and water in buildings, constructed from:
a moisture-impermeable and / or vapor-barrier layer (4),
one with the barrier layer (4) connected protective layer (10) made of polyethylene non-woven, and
an adhesive coating (12) arranged on the protective layer (10).

Description

The invention relates to a moisture barrier for sealing structures against moisture and water.

In construction, the seal against moisture, e.g. against non-pressing water an important role. To protect walls against damaging absorption of water, water-repellent protective coatings, mineral seals or impregnations such as plastic dispersions are used. Alternatively, PVC films or bitumen boards are applied in or under the walls.

It is an object of the invention to provide a moisture barrier and an arrangement with such a moisture barrier, which is characterized by good processing properties.

This object is achieved with the features of claim 1, 19 and 20, respectively.

Advantageous embodiments are the subject of dependent claims.

According to claim 1, a moisture barrier or moisture barrier is provided for building waterproofing with a moisture-impermeable and / or vapor-barrier layer and connected to the barrier layer protective layer of polyethylene non-woven. The protective layer is coated on at least one side with an adhesive layer or adhesive layer. When using the moisture barrier for building waterproofing, the moisture barrier can be protected by means of the adhesive layer with a substrate such. for basement sealing with an outside of a basement wall, be connected / glued and thus protect a basement interior against intruding from the outside water.

The moisture barrier is by the nonwoven layer with its large number of interconnected fibers special tear and puncture resistant. As a result, the protective layer protects the barrier layer from damage. In addition, due to the flexibility of the nonwoven protective layer, the moisture barrier easily adapts to any unevenness in the substrate so that a particularly tight connection between or tight contact with the substrate and masonry can be achieved. Furthermore, the moisture barrier is easy to handle due to the low weight per unit area or the low density of the nonwoven protective layer and thus, in particular, on vertical surfaces, e.g. Basement walls easy to install. In summary, the moisture barrier described by the combination of the moisture barrier layer with the nonwoven protective layer and the adhesive layer is resistant or insensitive and easy to work.

• - zur Abdichtung von Fassaden, Kellerwänden und Nassräumen, Garagendächern, Balkonen, Terrassen, Stützmauern, als Fenster-Fassaden-Anschlussdichtung (Laibung, Sturz, Brüstung),
• - als Dichtband gegen Wasser, Wasserdampf, Zugluft und Schlagregen,
• - als Fundamentstreifen zur Unterbrechung der Kapillarität zwischen Fundament und darauf angeordnetem Mauerwerk (horizontale Mauerwerkssperre),
• - als Kondenswasserschutz vor Aufbringen einer Wärmedämmung bei hinterlüfteten Fassaden,
• - als selbstklebender, wasserdichter Abschlussstreifen am Fußpunkt bei hinterlüfteten Verblendmauerwerk, und
• - als Korrosionsschutz für erdverlegte Leitungen.

Exemplary areas of application of the described moisture barrier are the use:

• - for sealing facades, basement walls and wet rooms, garage roofs, balconies, terraces, retaining walls, as a window-facade connection seal (soffit, lintel, parapet),
• - as a sealing tape against water, water vapor, drafts and driving rain,
• - as a foundation strip for interrupting the capillarity between the foundation and masonry thereon (horizontal masonry barrier),
• - as condensation protection before application of thermal insulation in ventilated facades,
• - as a self-adhesive, watertight end strip at the base with ventilated brickwork, and
• - As corrosion protection for buried cables.

The protective layer is preferably formed from a polyethylene staple fiber fleece having at least two nonwoven layers, preferably at least three nonwoven layers, particularly preferably at least four nonwoven layers. In particular, one, two of, three or each of the nonwoven layers has a preferred direction, i. the fibers of the nonwoven layer are strongly oriented in this preferred direction. In the case of at least two nonwoven layers with the preferred direction of the fibers, they are advantageously arranged so that the preferred directions of the individual nonwoven layers are aligned at an angle to one another. In the case of more than two nonwoven layers with preferred directions, the preferred directions of each of two nonwoven layers or the preferred directions of all nonwoven layers are aligned with one another at an angle between the preferred directions. Aligned at an angle to each other means that the angle is greater than 0 °, so the preferred directions are not parallel to each other. Advantageously, the or the preferred directions of all nonwoven layers are located in the plane of the nonwoven layer.

By crossing over the preferred directions of the individual layers or layers, the protective layer is reinforced and better protected against mechanical damage. Preferably, the preferred directions of the nonwoven layers at an angle greater than 0 ° and less than 180 ° or between -90 ° and 0 ° and offset from 0 ° and + 90 ° to each other. Preferably, the angle (or the amount of angle) between the preferred directions is in the range of 5 ° and 90 °, preferably in the range of 15 ° and 75 °. For example, in a protective layer with two nonwoven layers are the Preferred directions offset by 90 ° to each other, with three nonwoven layers offset by 60 ° to each other, with 4 nonwoven layers offset by 45 ° to each other.

The protective layer preferably has a basis weight in the range from 50 g / m ^{2 to} 300 g / m ² , preferably in the range from 80 g / m ^{2 to} 200 g / m ² and particularly preferably in the range from 100 g / m ^{2 to} 150 g / m ² , in particular a basis weight of or about 125 g / m ² . Additionally or alternatively, the protective layer has a thickness in the range of 0.5 mm-3 mm, preferably in the range of 0.7 mm - 2 mm, particularly preferably in the range of 0.8 mm - 1.5 mm, in particular a starch of or about 1 mm. This gives the nonwoven protective layer a stiffness that facilitates the laying of the moisture barrier. When rolling up a web-shaped moisture barrier wrinkles arise due to the different (bending) radii on the inside and outside of the moisture barrier. It has been found that the strength / stiffness of the nonwoven protective layer, the wrinkles resulting from the rolling are pulled back after rolling out.

Preferably, a coating of plastic is disposed on the side facing the release layer of the protective layer. Additionally or alternatively, the side facing the release layer of the protective layer is connected to an intermediate layer of plastic, for example by means of gluing, laminating, spraying, fusing, chaining and / or melt pressing. For example, the material of the coating and / or the intermediate layer is selected from: polyethylene, polyethylene terephthalate (PET). Particularly preferably, the coating and / or the intermediate layer has a basis weight of 60 g / m ² - 200 g / m ² , preferably 70 g / m ² - 150 g / m ² and particularly preferably 80 g / m ² - 120 g / m ² , in particular has a basis weight of or about 100 g / m ² . The coating or intermediate layer on the (fibrous / porous) nonwoven layer ensures a flat and smooth surface for a secure connection with the adjoining separating layer.

In an embodiment, the barrier layer made of plastic, in particular polyethylene or high density polyethylene (HDPE) is formed. For example, the barrier layer has a basis weight between 50 g / m ² -400 g / m ² , preferably 80 g / m ² - 300 g / m ² , particularly preferably 100 g / m ² - 200 g / m ² , in particular a basis weight of or about 120 g / m ² . The stated orders of magnitude ensure easy handling and high flexibility with simultaneous high mechanical strength.

In an embodiment, the moisture barrier has a basis weight in the range of 200 g / m ² - 400 g / m ² , preferably in the range of 250 g / m ² - 350 g / m ² and particularly preferably in the range of 280 g / m ² - 320 g / m ² on.

Since polyethylene, in contrast to bitumen or PVC, is considerably less sensitive to temperature, the moisture seal can be processed very well even at temperatures down to minus 5 ° C. Typically, when using a less flexible moisture barrier (such as PVC) at the transition between a horizontally extending ground and a vertical wall, a groove is formed to avoid a sharp kink in the PVC barrier at this transition or to prevent that the rigid PVC web breaks at this point. In contrast, the above-described highly flexible moisture barrier can be easily bent at a (sharp) angle of 90 ° without damage, so that the formation of a groove is not necessary.

In addition, due to the flexibility of the moisture barrier, connections to existing sealing levels or to masonry can be easily formed (in contrast to the relatively stiff bitumen or PVC). For example, connections to windows and to pipes protruding from the wall can be easily made because the flexible moisture barrier adapts to any contour. In particular, the moisture barrier is compatible with bitumen and PVC and can be connected or glued without problems with these materials.

Furthermore, polyethylene has excellent chemical resistance, and is e.g. acid-resistant, salt-resistant and alkali-resistant. The use of polyester for the protective layer and additionally for the separating layer thus increases the mechanical strength, flexibility, wear resistance and chemical and aging resistance of the moisture barrier.

The adhesive coating can be applied to the protective layer over the entire surface or almost the entire surface, so that when the moisture barrier is laid the full-surface or substantially full-surface adhesion to a substrate is ensured.

Particularly preferably, the adhesive coating is cold-adhesive, so that the moisture barrier can be easily glued to a substrate. For example, an acrylate adhesive can be used for the adhesive coating. Acrylic adhesives have a high resistance to aging and temperature and are insensitive to UV radiation and oxidation. In addition, acrylate adhesive can be well wet-glued and can be processed at temperatures of up to minus 5 ° C. For example, between 150 and 250 g / m ² acrylate adhesive is applied to the nonwoven, preferably in the range from 180 to 230 g / m ² , more preferably about 200 g / m ² . Alternatively, hot melt adhesives, so-called hot melt adhesives, can be used. Hotmelt adhesives are based on originally non-adhesive synthetic resins, which are liquefied at temperatures of, for example, above 150 ° C and obtained by this process when re-cooled good tack and high bond strength. For example, the adhesive coating has a basis weight in the range of 50 g / m ² - 150 g / m ² , preferably in the range of 60 g / m ² - 100 g / m ² , particularly preferably of about 70 g / m ² .

For protection, the adhesive coating can be covered over the entire surface with a removable protective cover. For example, a protective cover made of paper, polyethylene (PE) or polyethylene terephthalate (PET) or a combination of these materials. The protective cover can be pulled off to move the moisture barrier.

Preferably, the moisture barrier is web-shaped, so that it can be easily transported and processed as a roll product. For example, the moisture barrier may be provided as roll stock having a width in the range of 0.1m - 1.5m. Preferably, the web width is in the range of 10 to 15 cm, 15 to 25 cm, 30 to 50 cm or 75 to 100 cm.

The vertical or vertical laying of a web-like moisture barrier described above as a basement seal is described by way of example below. As a substrate preparation preferably a primer or a thin and evenly applied to the substrate or the outside of the basement. The web-shaped moisture barrier is cut to facilitate handling before laying and laid in web width from top to bottom. For this purpose, the protective paper about 50 cm are deducted and aligned the cut sheet at an upper edge of the wall to be sealed and pressed. Then the protective paper is pulled off slowly and evenly downwards and at the same time the web is carefully glued on. Adjacent webs should be glued over at least 50 mm overlapping to obtain a dense moisture barrier or water barrier. The overlap area must be carefully rolled. To protect the moisture barrier against mechanical damage (for example when filling the excavation), a protective fleece can be applied to the moisture barrier. Alternatively, insulation boards (e.g., perimeter boards) can be mounted on the moisture barrier.

Alternatively, the moisture barrier can be used for horizontal sealing against soil moisture (e.g., basement floor). Before laying, the substrate is preferably pre-painted with a primer (see above). The damp barrier can be cut before laying as described above or glued directly from the roll to the surface to be sealed. Adjacent webs should also overlap by at least 50 mm and be carefully rolled in the overlap area.

The single FIGURE shows a schematic cross-sectional view, not to scale, of a web-shaped moisture barrier according to a preferred embodiment.

• - eine feuchtigkeitsundurchlässige und/oder dampfsperrende Sperrlage 4 aus Polyethylen (PE), insbesondere Polyethylen mit hoher Dichte (HDPE), mit einem Flächengewicht zwischen 50-400 g/m², z.B. von oder von etwa 120 g/m²,
• - eine Klebstoffschicht 6, z.B. Acrylatklebstoff oder Hotmelt-Klebstoff,
• - eine Beschichtung bzw. Zwischenlage 8 aus Polyethylen, z.B. mit einem Flächengewicht von oder von etwa 100 g/m²,
• - eine Schutzlage 10 aus Polyethylen-Vlies, z.B. mit einem Flächengewicht von oder von etwa 125 g/m², wobei vorzugsweise 2, 3 oder 4 einzelne, aufeinanderliegende Vlieslagen zum Einsatz kommen, wovon vorzugsweise 1, 2, 3 oder 4 Vlieslagen eine Vorzugsrichtung der Faserorientierung haben,
• - einer Kleberbeschichtung 12, z.B. Acrylatklebstoff oder Hotmelt-Klebstoff mit einem Flächengewicht von oder von etwa 70 g/m², und
• - einen abziehbaren Liner 14 bzw. eine abziehbare Schutzabdeckung, z.B. aus Papier.

The web-shaped moisture barrier 2 has the following interconnected layers from top to bottom:

• - A moisture-impermeable and / or vapor barrier layer 4 of polyethylene (PE), in particular high density polyethylene (HDPE), having a basis weight of between 50-400 g / m ² , eg of or about 120 g / m ² ,
• - An adhesive layer 6 , eg acrylate adhesive or hotmelt adhesive,
• a coating or intermediate layer 8th of polyethylene, for example having a basis weight of or about 100 g / m ² ,
• - a protective layer 10 of polyethylene nonwoven, for example with a weight per unit area of or about 125 g / m ² , preferably 2, 3 or 4 individual superimposed nonwoven layers are used, of which preferably 1, 2, 3 or 4 nonwoven layers have a preferred direction of fiber orientation,
• - an adhesive coating 12 , for example, acrylate adhesive or hot melt adhesive having a basis weight of or about 70 g / m ² , and
• - a peelable liner 14 or a removable protective cover, eg made of paper.

For ranges herein, instead of "in the range of", "between" or instead of "between" may also be "in the range of".

LIST OF REFERENCE NUMBERS

2

moisture barrier

4

blocking position

6

adhesive layer

8th

liner

10

protective layer

12

adhesive coating

14

Liner / protective cover

Claims (22)

Moisture barrier (2) for sealing against ingress of moisture and water in buildings, constructed from: a moisture-impermeable and / or vapor-barrier layer (4), one with the barrier layer (4) connected protective layer (10) made of polyethylene non-woven, and an adhesive coating (12) arranged on the protective layer (10). Moisture barrier after Claim 1 wherein the protective layer (10) is formed from a polyethylene staple fiber nonwoven with at least two nonwoven layers. Moisture barrier after Claim 1 or 2 wherein each nonwoven layer has a preferential direction of fiber orientation and the at least two nonwoven layers are arranged so that the preferential directions of the nonwoven layers are oriented at an angle to each other. Moisture barrier after Claim 1 . 2 or 3 wherein the protective layer (10) has a basis weight in the range of 50 g / m ² - 300 g / m ² , preferably in the range of 80 g / m ² - 200 g / m ² and particularly preferably in the range of 100 g / m ² - has 150 g / m ² , in particular a basis weight of or about 125 g / m ² , and / or wherein the protective layer (10) has a thickness in the range of 0.5 mm 3 mm, preferably in the range of 0.7 mm - 2 mm, more preferably in the range of 0.8 mm - 1.5 mm, in particular a thickness of or about 1 mm. Moisture barrier according to one of the preceding claims, wherein on the side facing the release layer (4) side of the protective layer (10) is arranged a coating of plastic, and / or wherein the separating layer facing side of the protective layer is connected to an intermediate layer (8) made of plastic. Moisture barrier after Claim 5 wherein the material of the coating and / or the intermediate layer (8) is selected from: polyethylene and / or polyethylene terephthalate (PET). Moisture barrier after Claim 5 or 6 wherein the coating and / or the intermediate layer (8) has a basis weight in the range of 60 g / m ² - 200 g / m ² , preferably in the range of 70 g / m ² - 150 g / m ² and particularly preferably in the range of 80 g / m ² - 120 g / m ² , in particular a basis weight of or about 100 g / m ² . Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2) has a basis weight in the range of 200 g / m ² - 400 g / m ² , preferably in the range of 250 g / m ² - 350 g / m ² and particularly preferably in the range from 280 g / m ^{2 to} 320 g / m ² . Moisture barrier according to one of the preceding claims, wherein the barrier layer (4) made of plastic, in particular polyethylene or high density polyethylene (HDPE) is formed. Moisture barrier according to one of the preceding claims, wherein the barrier layer (4) has a basis weight in the range of 50 g / m ² -400 g / m ² , preferably in the range of 80 g / m ² - 300 g / m ² , particularly preferably in the range of 100 g / m ² - 200 g / m ² , in particular a weight per unit area of or about 120 g / m ² . Moisture barrier according to one of the preceding claims, wherein the adhesive coating (12) is applied to the protective layer (10) over the whole area or almost entire surface. Moisture barrier according to one of the preceding claims, wherein the adhesive coating (12) has a basis weight in the range of 50 g / m ² - 150 g / m ² , preferably in the range of 60 g / m ² - 100 g / m ² , more preferably of about 70 g / m ² . Moisture barrier according to one of the preceding claims, wherein the adhesive coating (12) is cold-tacking. Moisture barrier according to one of the preceding claims, wherein the adhesive coating (12) is covered over its entire surface with a protective paper / protective cover (14) which is removable for laying the moisture barrier. Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2) has no bitumen and / or PVC. Moisture barrier according to one of the preceding claims, wherein the at least one separating layer (4), the protective layer (10) and / or the intermediate layer (8) by means of gluing, laminating, spraying, fusing, concatenating and / or melt pressing are interconnected Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2) is web-shaped. Moisture barrier according to one of the preceding claims, wherein the moisture barrier (2) is arranged in a wall, under a wall and / or on a side surface of a wall. Masonry arrangement with a masonry, and arranged on the masonry moisture barrier (2) according to any one of the preceding claims, wherein the barrier layer (4) facing upward and / or facing away from a side surface of a wall. Flat sealing arrangement with at least two or more juxtaposed webs of moisture barriers (2) according to one of Claims 1 to eighteen , Flat sealing arrangement according to Claim 20 , wherein adjacent webs are laid overlapping in its edge region, in particular with an overlap region of at least 40 mm, 60 mm, 80 mm, 100 mm or 120 mm and / or in particular with an overlap region of at most 120 mm, 100 mm or 80 mm. Flat sealing arrangement according to Claim 20 or 21 , which is sealed with the seal assembly: a cellar, a garage roof, a balcony, a terrace or a wet room.

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