WO2005028769A1

WO2005028769A1 - Sealing web, arrangement and use thereof

Info

Publication number: WO2005028769A1
Application number: PCT/DE2004/002024
Authority: WO
Inventors: Werner Welter; Detlef Fritz; Roland Wolf
Original assignee: Henkel Kgaa; Roland Wolf Gmbh
Priority date: 2003-09-16
Filing date: 2004-09-11
Publication date: 2005-03-31
Also published as: EP1664447A1; DE10342678A1

Abstract

A multi-layer sealing web is disclosed, comprising a support web (1), preferably coated on both sides with an adhesive plastic mass, whereby the double-sided coatings (2, 3) are covered by protective means (4, 5) and at least the protective means (5) facing the further component is a film web, divided into at least two separately detachable film webs. The sealing web, optionally after removal of the protective layers, is arranged between a first component and a perpendicularly-abutting further component, whereby at least one component contains cement. An effective protection against damp- and air-permeability is achieved by means of said arrangement in the foundation/wall region and the internal adjacent damp course and the outer sealing web can be sealed to the sealing web in a moisture- and air-tight manner by gluing.

Description

Barrier track, its arrangement and use

The invention relates to a multi-layer barrier sheet between a first component and a subsequent further component, which contains a carrier sheet coated on both sides, the two-sided coatings being covered with a protection. The barrier membrane can be connected to adjacent protective foils or plastic-modified thick coatings from other trades. The invention further relates to the arrangement and use of this barrier track between a first and a subsequent further component.

A barrier track in the context of the present invention is generally to be understood as a sheet-like insert between two components which prevents and practically excludes the transition or migration through the interfaces of the components from moisture and / or water vapor.

Sealing the transition from cement components to other components against moisture and water vapor is a common task in the construction industry. If, for example, vertical sealing of walls in contact with the ground is carried out in accordance with DIN 18195, they must reach down to the foundation shoulder and be connected to the horizontal seal under the walls (cross-sectional sealing) so that no moisture bridges are created (DIN 18195, Part 4, 6.1.3). This principle of connection also applies to the sealing of the floor against rising damp required by the standard (DIN 18195, Part 4.6.2.1). At the same time, the wall contact joint - that is, the border area from the foundation to the wall - must be sealed against moisture from outside. In practical implementation, however, the sealing of the wall connection joint proves to be very critical. Experience has shown they have an extraordinarily high error rate. This is particularly problematic if it is not possible to locate the leak through which the water penetrates. This is very difficult if a dense film or membrane is used for the sealing, since this membrane is undermined after damage between the membrane and the concrete surface and the water can hardly take traceable and unpredictable routes. These paths are given in every direction and practically over the entire surface due to the free spaces between the flat sheet and the rough concrete or mortar surface.

Seals of concrete structures are known in which waterproof sheets are glued to the surface of concrete structures. If the track is damaged, water can penetrate. The sealing membrane is undermined, i.e. The water runs in the entire area between the waterproofing membrane and the concrete body, spreading uncontrollably and can penetrate the concrete at any point or run into the interior of the building at joints, imperfections or due to the roughness of the concrete. This makes the location of the damaged area and the analysis of the cause of the damage considerably more difficult. This problem is very common with single-layer, but also with multi-layer seals.

In practice, to solve the problem, the solid, set concrete body or a leveling layer made of mortar, e.g. Mortar according to DIN 1053-1, the surfaces of which are horizontal but uneven and not adaptable, at least one layer for horizontal insulation of the substrate to prevent the moisture from rising (DIN 18195-4). The unevenness of the surface of the set concrete body or mortar is also caused by the fact that the concrete or mortar shrinks to a certain extent when setting, so that parts of the granular aggregates near the surface protrude from the surface as elevations.

In order to avoid the water underflow mentioned above, the following working method is known from roof sealing technology: A correspondingly thick PYE bitumen welding sheet on the side facing the concrete is liquefied by means of an open flame to such an extent that when it is pressed on, unevenness in the concrete surface is filled in and therefore no underflow between this PYE sheet and the concrete surface is possible. However, this PYE membrane is not the actual seal. This in turn consists of a PVC-P sheet. When this PVC-P membrane is applied to the already installed PYE membrane, the surface of the PYE membrane is again heated and liquefied by means of an open flame to such an extent that the actual sealing membrane (PVC-P) is embedded (glued) without any cavities , The overlaps must then be thermally or chemically welded to ensure the final seal.

DE 196 1 1 297 A1 discloses seals for civil engineering with sealing sheets coated on the concrete side, the coating being provided by a

Mixture of soft bitumen, styrene-butadiene-styrene and synthetic resins. The usual application of the described method provides that the sealing membrane is spread onto the casting base or side formwork in such a way that the coating is arranged on the concrete side. In this way, when the concrete is poured, there is contact between fresh concrete and sealing compound, which react with one another and result in a

Seal the concrete body downwards or to the side. The method takes advantage of the fact that the hydrostatic pressure of the fresh concrete lying on or against it leads to pressurization between the concrete and the coating.

EP 0 796 951 A1 describes that fresh concrete is brought together with sealing sheets which are coated with an adhesive. The geomembranes are fully laid in a formwork or casting mold before they are poured with fresh concrete.

WO 95/10574 describes waterproof membranes which are applied to concrete. The membrane consists of one Carrier to which a protective layer has been applied with an adhesive. The carrier with the protective layer is glued to the concrete with the help of another adhesive.

DE 102 61 076 A1 describes plastic compositions which are applied to moist concrete.

From DE 297 16 737 U1 multilayer vapor barrier sheets are known, e.g. a vapor barrier sheet made of a carrier with a bitumen coating on both sides, the one bitumen layer being coated with an aluminum laminate and the other with a removable material, in particular with a film. The vapor barrier membrane is intended to enable permanent installation of an insulation layer on the top. How the vapor barrier sheets are to be laid next to one another is not expressly stated. However, it is shown as a disadvantage that the known bitumen sheets are difficult to permanently secure in the overlap area. In addition, in the case of an overlapping arrangement, the peelable film would have to be severed with a knife, which always leads to an injury to the barrier sheet and the coating and thus creates the risk of water permeability.

From EP 0 59 405 sealing sheets for use in building and civil engineering are known, which are arranged overlapping. They are based on a plastic-elastic self-adhesive sealant between two flexible layers, in particular made of plastic films or metals, which they do not completely cover, but leave a protrusion for the overlapping adhesion of the sheets. These self-adhesive areas are preferably covered with a removable protective film.

The object of the present invention is to improve the sealing against moisture when at least two components meet and to minimize or even eliminate the risk potential from planning and application errors by means of new methods and new products. In particular, a) the rise of moisture from the concrete base or the foundation or the floor ceiling into the component above it (e.g. masonry or prefabricated element in wooden frame construction) is to be prevented, b) the penetration of water from outside in the area of the connection of the concrete base or foundation , Floor ceiling and the rising wall or the migration of this water inwards and into the concrete or the masonry or prefabricated part is avoided, c) a watertight connection with the outer seal of the rising masonry and if necessary d) a water vapor tight and airtight seal or a water vapor-tight and air-tight connection of a vapor barrier inside the building or water vapor and water-tight connection of a water and vapor barrier inside the building with the horizontal insulation below the masonry.

The solution according to the invention essentially consists in the new use of a new, multi-layered web adapted for this purpose as an air and moisture barrier between a first component and a further component connected perpendicularly thereto, wherein at least one component should contain cement.

The solution according to the invention thus consists in the new use of new barrier sheets which prevent or practically exclude the transfer of moisture and / or water vapor between components which contain cement to other components and which likewise prevent water from migrating in its physical states along the connection areas Prevent barrier film / concrete or barrier film / rising component.

Contains the new multi-layer barrier sheet for use between a first component and a subsequent additional component ^■ a carrier web coated on both sides, ^■ the two-sided coatings being covered with a protection, and ^■ wherein at least the protection facing the further component is a film web that is divided in the web direction into at least two separately detachable film webs.

The new multi-layer barrier sheets according to the invention surprisingly prevent the transition and the passage of moisture (no water undermining) and, with the appropriate equipment, the passage of water vapor between components, which preferably contain cement, to other components or practically exclude this. It is particularly advantageous that the sealing materials listed in DIN 18195-2 such as bitumen and polymer-bitumen membranes (Table 4), plastic and elastomer sealing membranes (Table 5), elastomer sealing membranes with self-adhesive layer (Table 6), bitumen-compatible plastic - Sealing membranes made of ethylene-vinyl acetate tar polymer (Table 7), dome-corrugated metal strips (Table 8), plastic-modified bitumen thick coatings (Table 9), cold self-adhesive

Bitumen waterproofing membranes (Table 10) but also sealing materials not previously listed in DIN 18195 such as thermoplastic olefins (TPO), thermoplastic elastomers (TPE), olefin copolymers with bitumen (OCB) and / or flexible polyolefins (FPO) for the components of the subsequent trades appropriate equipment of the barrier sheet according to the invention can be tightly connected to this.

The first component is preferably a cement-containing component.

Cement as the basis of one component is understood to mean a finely ground hydraulic binder, which mainly consists of calcium silicates, aluminates and ferrites, for the production of the cement-containing components. The most important cement-containing components are components made of concrete, which can be produced by hardening a mixture of cement, concrete aggregate and water as well as, if necessary, concrete admixtures and concrete additives (see DIN 1045). Most of the cement is used in the construction industry to manufacture concrete structures. These should last as long as possible and also look decorative. For this purpose, they can be coated, whereby a liquid substance, e.g. a dye, an adhesive or a sealing compound, is applied to the fully hardened concrete structure and adheres to it more or less firmly and permanently after it has set (see DIN 8580).

All types of cement are suitable for the cement-containing component, in particular Portland cement (CEMI), Portland composite cement (CEMII) and blast furnace cement (CEMIII).

The cement-containing component usually contains not only water and cement, but also other substances depending on the application. The cementitious components therefore also include e.g. Screeds, leveling compounds, mortar and in particular concrete, e.g. SCC concrete (self-compacting concrete).

In principle, all materials customary in the construction industry can be considered as further components which can be connected to the cement component within the scope of the present invention. For example, masonry, concrete, screed, composite panels, e.g. made of fiber cement and wood panels, as well as all wooden stand construction methods, such as those used in prefabricated / prefabricated house construction.

The carrier web in the context of the present invention can be natural or synthetic or organic or mineral, for example made of glass, metal, wood and plastic, with carrier webs made of plastic being preferred. The carrier web can expediently contain or consist of any material that is permitted by the DIN 18195-2 standard in Tables 4 to 10 (for details see above for the sealing materials).

Likewise, the substances mentioned above for the sealants come into question which have not yet been listed in DIN 18195.

For example, films made of polyolefins, polyester, polyamide, polyurethanes, polyacrylonitrile including corresponding block copolymers, metal and / or bituminous material can preferably be used as the carrier webs made of plastic.

Carrier webs made of plastic can particularly preferably be, for example, films made of polyethylene, polypropylene, styrene / butatiene / styrene block copolymers.

Carrier webs in the context of the present invention can preferably be, for example, films made from woven, knitted, laid and / or non-woven fabrics based on fibers made from polyolefins, polyester, polyamide, polyurethanes, polyacrylonitrile, including appropriate block copolymers, glass and / or natural materials, optionally with polyolefins , Polyester, polyamide, polyurethane, polyacrylonitrile including appropriate block copolymers, metal and / or bituminous material can be impregnated and / or laminated.

Impregnating and / or laminating agents which can be used are, for example, polyolefins, polyesters, polyamides, polyurethanes, polyacrylonitrile, including appropriate block copolymers, aluminum and / or bitumen.

In the context of the present invention, it is particularly preferred if the carrier web consists of a material which inhibits or blocks the diffusion of water - and, if required in terms of building physics - of water vapor. The carrier web generally has a thickness of 0.005 to 5 cm, preferably 0.01 to 0.2 cm.

In the context of the present invention, the carrier web is coated on both sides. In a preferred embodiment of the present invention, the coating with a plastic compound (also called compound) takes place on at least one side of the carrier web, in particular on the side facing the first component. The coating with the plastic mass on the side facing the cement-containing component and on the side facing the further component can be the same or different.

The plastic masses are known per se and are described in DE 102 61 076 A1.

Plastic compositions within the scope of the invention generally have a melting or softening temperature measured in accordance with DIN 52011 in the range from 20 to 240 ° C., preferably in the range from 120 to 190 ° C., and particularly preferably in the range from 150 to 180 ° C.

The plastic mass should generally be solid at temperatures of around 20 ° C. The measure of this (cohesion) was the tear strength of more than 0.1, in particular more than 0.5 N / 50 mm, measured according to DIN 53354 with test specimen A according to Table 1 and the test speed according to DIN 53455 of 50 mm / min , + 10% and according to test conditions A to V. The elongation at break is preferably in the range of greater than 100%.

In addition to cohesion, the plasticity of the coating is essential. This is to be understood here as the possibility that the crystal structures can penetrate into the coating when the cement-containing mass crystallizes out. The needle penetration according to DIN 52010 is taken as a measure for this. It should be in the range from 20 to 200/10 mm and in particular in the range from 50 to 100/10 mm. For the adhesion of the coating to the cement-containing molded part, it is therefore not necessary that the coating itself be sticky or that it becomes sticky in the presence of the aqueous, liquid deformable cement-containing composition, for example because of the use of water-soluble or water-swellable binders in the coating. This lack of stickiness is defined by the peel strength. According to UEATc (Dec. 2001) it should be at room temperature and a peeling speed of 100 mm / min. and a peel angle of 90 ° on a steel substrate with an adhesive time of 15 minutes are advantageously less than 4 N / 50 mm, in particular less than 0.5 N / 50 mm. The plastic mass is preferably sticky, ie the peel strength is at least 4 N / 50 mm.

Not only the plasticity is decisive for the "adhesion" of the coating to the cement-containing molded part, but also a minimum layer thickness of the

Coating of 0.05 mm. The thickness of the coating is preferably

Range from 0.2 to 5 mm, in particular in the range from 0.2 to 1.0 mm. This

Areas apply especially when the coating is also considered

Adhesive layer serves. Then it is advisable to stay in the preferred range of thickness to prevent a cold flow of the coating. If the coating is a decorative coating and has no further layer to wear, its thickness can also exceed 0.7 mm. This applies e.g. if the coating is to compensate for unevenness or if the coating is to perform functions that depend on its thickness, e.g. the impermeability to moisture.

If the coating is used to seal cavities in or on the surface of concrete structures against water ingress, then it should be impermeable to water, but depending on the requirements, it should or should not allow water vapor to pass through, which is expressed by the so-called sd value (sx μ). This should be at least 1, preferably at least 100 and particularly preferably 1,000 to 20,000. Of course, the coating can also be permeable to water vapor, if desired is. Then coatings with an sd value of less than 10, preferably 1 to 5, are to be used.

As a rule, the plastic mass is at least one polymer (homo- or a copolymer), which is preferably modified by additives, such as e.g. through resins, plasticizers, fillers and fibers. Particularly preferred polymers are rubbers and elastomers such as e.g. Natural rubber, styrene / butadiene rubber, silicone, polyurethane, styrene /

Butadiene / styrene triblock copolymers or styrene / isoprene / styrene triblock copolymers, but also polymers such as the polyolefins polyisobutene, polybutene and atactic polypropylene, and also ethylene / vinyl acetate copolymer and polyacrylic acid ester. The high elongation at break of greater than 100, in particular greater than 200%, speaks for the choice of rubbers and elastomers. It is particularly useful when the coating is strongly curved at corners. In general, however, it is sufficient if the solid coating has an elongation at break of more than 10, in particular more than 50%, measured according to DIN 53354 with test specimen A according to Table 1 and with a test speed according to DIN 53455 of 50 mm / min. + 10%, namely according to test conditions A to V. The polymers should expediently not be water-soluble, since there is then a risk that the composite will loosen when exposed to moisture. Because of their low water solubility, polyolefins are preferred.

In particular, it is preferred if the plastic mass consists of a material that inhibits or blocks the diffusion of water and / or water vapor.

In the context of the present invention, the layer facing the further component also preferably consists of sealing materials according to DIN 18195-2, Tables 4 to 10 or also sealing materials not previously mentioned in DIN 18195, such as thermoplastic olefins (TPO), thermoplastic elastomers (TPE), olefin Copolymers with bitumen (OCB) and / or flexible polyolefins (FPO), so that a material-identical seal of the other Components with precisely these sealing materials in accordance with DIN 18195-2, Table 4-10, can be made using standard work engineering.

Instead of a sticky plastic mass, the carrier sheet can be coated on the side facing the further component with an adhesive, in particular with a pressure sensitive adhesive: Then the adjacent sheets (vapor barrier sheet and sealing sheet) can be easily and reliably connected to the inventive barrier sheet.

In general, the coating of the carrier sheet is full-area and uniform over the entire width of the barrier sheet. However, it is also possible and even preferred that one or both coatings are not carried out over the entire width and / or not uniformly over the entire width of the barrier sheet with one and the same coating composition. Depending on the sealing method envisaged, it may be appropriate for the barrier membrane according to the patent to be provided with plastic mass only in the outer or inner outer area below or below and above, while the middle area - i.e. the area on which e.g. the masonry stands up - is free of the plastic mass. The coating of the carrier web is expediently cut out on one or both sides in an area which corresponds in particular to the width of the further component.

It is also possible that the patented barrier membrane is also coated in the middle area, but this layer is not used for connection to the fresh concrete or the masonry placed on it. This can be done in such a way that in this area the plastic mass does not have the properties that bind with the mortar and / or concrete.

This connection with the fresh concrete can also be prevented by the fact that a plastic coating is present, but remains permanently covered with a film, paper or other protective layer (i.e. it is not removed during processing), so that this Way is prevented that gluing / connection takes place. In this In this case, this means that the protective layer, in particular the protective film or the protective paper, is also divided into three in the lower area facing the concrete and only the two outer strips of the protective layer are removed and that in the upward direction towards the further component, for example the masonry Area of this protective film is in three parts, but first no protective film is removed, but only after appropriate work progress (putting on the masonry, the stonework, etc.) the outer film is removed to ensure the seal with the vertical seal and then later the inner film is removed, to ensure connection to the internal seal against water and / or water vapor.

The protection of the coating on both sides can consist of foils, fabrics, knitted fabrics, scrims and / or nonwovens. For example, films made of paper and plastics, such as polyethylene, polypropylene, styrene / butadiene / styrene block copolymers, glass and / or mineral materials, may be mentioned, which can be treated so that the protective film can be removed from the coating (plastic mass or pressure sensitive adhesive). For this, e.g. Suitable for silicones.

The protective film facing the cementitious component is generally undivided. But it can also be divided at least once.

In a special embodiment of the present invention, the coating facing the cement-containing component is sprinkled with inert, preferably finely ground minerals, such as bentonite and / or silicates.

The protective film web facing the further component is divided according to the invention into at least two separately detachable webs.

In the context of the present invention, it is preferred if the protective film web facing the further component is divided into three separately detachable webs, the middle advantageously corresponding to the width of the further component. In order to be able to vary a barrier sheet according to the invention more easily for other components of different widths, in a special embodiment of the present invention the middle protective film sheet is divided into further separately detachable sheets which can be removed depending on the width of the component.

The protective films generally have a thickness of 0.05 to 1 cm, preferably 0.07 to 0.25 cm.

The barrier sheet according to the invention is generally brought on rolls and cut off at the construction site as required. In general, the width of the barrier sheet is about twice as wide as the additional component that is attached to the cement-containing component. To ensure a secure connection with the adjacent sealing materials according to DIN 18195-2 or the sealing materials previously not listed in DIN 18195 such as thermoplastic olefins (TPO), thermoplastic elastomers (TPE), olefin copolymers with bitumen (OCB) and / or flexible polyolefins ( FPO), the barrier membrane according to the invention should protrude 1 to 50 cm, preferably 5 to 15 cm, on both sides of the further structure.

The present invention also relates to the arrangement with the barrier sheet according to the invention, optionally without protection, between a first component - in particular a floor slab or ceiling - and a further component - in particular made of masonry, concrete, composite panels or

Wood ^■ >, the first and / or the further component containing cement.

In the arrangement, the first component preferably contains cement.

In the arrangement of the first component, the concrete slab / cellar ceiling of a prefabricated house and the adjoining further component are preferably a wooden stud wall. The present invention also relates to the use of the multilayer barrier sheet according to the invention between a component and a further component connected to it, the first and / or further component containing cement and the barrier membrane - optionally after removal of the protective film - onto the component with not yet hardened cement is pressed.

The first component is preferably a cement-containing component.

The barrier sheets according to the invention can preferably be used as a moisture barrier and, if required in terms of building physics, as a water vapor barrier or water vapor barrier between a cement-containing component and a further component connected to it.

In the context of the present invention, it is particularly preferred if the protective film facing the further component is divided into three separately detachable protective films, the middle corresponding to the width of the further component.

After removing the middle removable protective film, the further component is attached to the layer made of the plastic mass and connected to the carrier web.

Preferably, however, a barrier sheet is used, which has neither coatings with plastic mass nor protective films in the area of the further component. Then the further component is erected directly on the carrier web.

In the context of the present invention, it is particularly preferred if the protective film facing the further component is made of a robust, waterproof material, in order not to be destroyed by the construction work and to ensure the protection of the actual barrier sheet. It is advantageous that with the removal of the outer detachable protective film webs, soiling, such as fallen mortar, can also be easily removed.

After removal of the outer removable protective film, in a preferred embodiment of the present invention, sealing sheets, e.g. cold self-adhesive bituminous sealing sheets and / or plastic-modified bituminous thick coatings for sealing the components of the subsequent trades on the plastic mass or the pressure sensitive adhesive and thus connected to the carrier sheet.

In the context of the present invention, all films which are customary in the construction industry and are intended to seal components of the subsequent trades can be used. Sealing films that are used as a horizontal barrier in the sense of DIN 18195 and all sealing materials that are mentioned in DIN 181 95, Part 2, Tables 4 to 10 are particularly worth mentioning here.

It is also possible, for example, to use protective layers with the following structure - undivided or divided sealing foils - layer made of a plastic mass - bitumen and polymer sealing membrane according to Table 4-10, DIN 18195-2 or also sealing materials not previously listed in DIN 18195 such as thermoplastic olefins (TPO), thermoplastic elastomers (TPE), olefin copolymers with bitumen (OCB) and / or flexible polyolefins (FPO).

It is not necessary to apply the plastic mass underneath the other component (e.g. the masonry).

To connect the inside vapor barrier, the plastic mass should be applied, which is covered with a protective film. On the outside of the further component, it is not absolutely necessary that the plastic mass is present. So only a protective film can be attached; After removing this protective film and the mortar residues adhering to it, the outer wall can then be connected in the usual way with bitumen or polymer bitumen membranes in accordance with Table 4, DIN 18195-2, which are used for the vertical sealing of the building.

In a further embodiment it is possible to use - divided or undivided protective films - layer made of a plastic mass - plastic or elastomeric sealing sheets in accordance with Table 5, DIN 18195-2.

To connect the vapor barrier on the inside, a layer of a plastic mass is preferably applied, which is covered with a protective film; in the middle under the masonry there may or may not be a layer of a plastic mass; there is only a protective film on the outer side; After removing this protective film and the mortar residues adhering to it, the outer wall can then be sealed in the usual way with the plastic or elastomer sealing membrane in accordance with Table 5 of DIN 18195-2. It is also possible that there is a layer of a plastic mass on the outer side, which after removal of the protective film ensures a permanently watertight connection with the sealing membrane according to Table 5 of DIN 18195-2.

In a further embodiment it is possible to use an elastomeric sealing sheet with a layer of a plastic mass according to Table 6, DIN 18195-2 with the same structure as the surface. In a further embodiment it is possible to use a bitumen-compatible plastic sealing membrane made of ethylene vinyl acetate tar polymer in accordance with Table 7, DIN 18195-2 with the same structure.

In a further embodiment it is possible to use dome-corrugated metal strips according to Table 8, DIN 18195-2 with the same structure.

In a special embodiment of the present invention, the same material that is used as a protective film or sealing material for the components of the subsequent trades is used as the film web.

In the overlap area, the multilayer barrier sheet according to the invention is then glued or welded to the protective film of the components of the subsequent trades.

The multilayer barrier sheet facing the cement-containing component is pressed onto the still moist cement-containing component, if necessary after removing a protective film.

The barrier membrane according to the invention can also be connected to plastic-modified thick coatings according to DIN 18195-2, Table 9, of other trades.

The barrier membrane according to the invention can be used as follows:

After the concrete base or the concrete foundation has been inserted and properly processed, the barrier sheet according to the invention is placed on the still fresh concrete in the width matched to the thickness of the masonry under all the outer and inner walls of the structure. For this purpose, the protective film on the underside is removed in one operation and the actual barrier sheet is placed on and only slightly pressed on. After the concrete has hardened, before the erection of the inner or outer Wound the undivided or multiple divided protective film in the middle of the sealing film in the width of the masonry, the cement or lime-cement mortar presented and the masonry erected in the usual way.

As a further variant, it is also possible for the outer walls to be made of concrete. The working technique is the same. Before the formwork is set up, the protective film of the barrier sheet according to the invention is removed in the central region in the corresponding width, so that the concrete which is subsequently introduced connects to the barrier sheet according to the invention in a watertight and underrunning manner.

The next step is to seal the outer walls. For this purpose, the outer protective film is removed and then the wall is sealed using the professional working technique matched to the outer seal and is connected in a watertight manner to the barrier sheet according to the invention. Here are a few examples:

I. Sealing with cold self-adhesive bitumen sealing membrane: A barrier membrane according to the invention is used which contains a plastic mass on the outside. The cold self-adhesive bitumen sealing membrane is pressed onto the barrier membrane, which results in the watertight connection.

2. In the case of seals with plastic-modified thick coatings (KMB) of the outer walls, these thick coatings are not only applied to the wall in conventional handicraft technology, but also to the plastic mass of the barrier sheet according to the invention. 3. When sealing with plastic and elastomeric sealing sheets, the coating of the barrier sheet according to the invention generally consists of the same plastic or elastomer as the sealing sheet and is carried out in the usual way. technology thermally or chemically waterproof with the vertical sealing made of plastic or elastomeric sealing sheets. 4. When sealing with bitumen or polymer sealing membranes of the outer walls, the outer part of the barrier membrane according to the invention consists of precisely this material, so that the connection between the vertical seal and the barrier membrane according to the invention are connected to one another in the working technique typical of this barrier membrane.

After appropriate construction progress, before removing the screed after removing the inner protective film, either the water vapor barrier is pressed onto the plastic mass and thus connected in a water vapor-tight manner, or the concrete base plate is sealed against water in liquid and vapor form by applying the aforementioned sealing materials of DIN 18195, Part 2, performed. In principle, the same materials as described for the external sealing can be used, except for plastic-modified thick coatings. Accordingly, the surfaces must also vary - that is, both the plastic masses already described and the supports made of bitumen or polymer bitumen sheets, plastic or elastomer sealing sheets, calotte-corrugated metal strips, etc.

The barrier membrane according to the invention can also be used advantageously in prefabricated house construction, in particular between the concrete ceiling / cellar ceiling (1st component) and the wooden stud wall (further component) connected therefrom, e.g. to ensure the windproofness of the entire building envelope: To ensure an airtight connection between the concrete slab / cellar ceiling and the wooden stand outer walls, it is common to attach a film to the wooden stand prefabricated parts. So far, however, it has been cumbersome and not certain how this film should be permanently bonded to the concrete in an airtight and windproof manner. frequently butyl tapes or other adhesives are used for this purpose, but this is not precise under construction site conditions due to dirt / moisture and therefore cannot be guaranteed that the blower door procedure (test to determine the windproofness of the entire building envelope) will then be passed. It is safer to use a barrier sheet according to the invention made of a support coated on both sides, for example film or nonwoven, with protective layers. After removing the lower protective film, it is - as already explained for the base plate - placed on the outer edge of the base plate / basement ceiling on the fresh concrete and thus binds intimately to it. The plastic coating on the upward-facing side of the barrier sheet is protected by a protective film which is separated one, two, three or more times. A film which is present in two parts is preferably used for this invention. After setting up the prefabricated wooden stand parts, one or more strips of the protective film are then removed and the film already attached to the wooden stand structure is placed on the plastic coating and pressed on, thereby ensuring tightness (FIGS. 4 and 5).

In a special version of this type of barrier membrane, it can also be the case that the middle part of the covering paper is removed and the vapor barrier film of the wooden stand construction parts is attached to this part, while the sealing film or the vapor barrier film, which is applied underneath the screed, is then installed later , after removal of the protective layer is again connected to the barrier sheet according to the invention.

In a further embodiment, it is also possible for the outer sealing of the basement / foundation to be pulled up in the same way and, once the protective film has been removed, to be connected to the front / outer part of the sealing film according to the invention.

The present invention can be explained with reference to FIGS. 1 to 5: Figure 1 shows the structure of the barrier sheet according to the invention. The carrier web (1) is coated with a plastic mass (2) and an adhesive layer or sticky plastic mass (3). The protective film (4) faces the cement-containing component and the divided protective film (5) faces the further component.

Figure 2 shows a masonry (7) which is on a cement-containing component (6), e.g. a floor slab is erected. The barrier sheet according to the invention with the carrier sheet (1) is coated with a plastic compound (2) and an adhesive layer or sticky plastic compound (3). The protective film (5) faces the further component. Below the masonry (7) there are neither coatings (2, 3) nor protective films (4, 5). Outside the masonry, the protective film (5) is still attached to the adhesive layer / sticky plastic mass (3).

Figure 3 shows masonry (7) which is on a cement-containing component (6), e.g. a base plate, is erected, a sealing film (8) on one side and a vapor barrier (9) in the overlapping part being connected to the barrier sheet according to the invention (without protection) on the other side. There are no coatings (2, 3) below the masonry (7). Outside the masonry (7), the carrier web (1) is connected via the adhesive layer (3) to the sealing membrane of the masonry (8) or to the vapor barrier (9).

FIG. 4 shows a standard section of a base point of a wooden frame construction with an airtight connection of the barrier sheet according to the invention to the sealing of the floor and to the wind barrier of the outer wall. The barrier membrane (13) according to the invention is connected via the seal (12) to the floor made of screed (10), vapor barrier (9), insulation (11) and seal (12) and via the wind blocker (20) to the outer wall made of cover / Floor formwork (18), slats (19), wind barrier (20) and chipboard (21). With the vapor barrier (9) of the inner wall of the wooden stand (15) made of mineral fiber (14), PE film (16) and the fire-resistant plasterboard board (17) there is an indirect connection via the cover (12). FIG. 5 shows a regular section of a base point of a wooden frame construction with an airtight connection of the barrier sheet according to the invention to the sealing of the floor and to the wind barrier of the outer wall and the PE film of the inner wall. The barrier sheet (13) according to the invention is, as in FIG. 4, connected to the seal (12) of the floor and the wind barrier (20) on the outside of the wall. There is also a direct connection to the PE film (16) on the inside of the wall.

LIST OF REFERENCE NUMBERS

1. Carrier web

2. Coating with a plastic mass

3. Adhesive layer or sticky plastic mass

4. Detachable adhesive protective film facing the cement-containing component. 5. Separable adhesive protective film facing the additional component

6. Cement-containing base plate

7. Masonry

8. Sealing film

9. Vapor barrier 10. Screed

11. Insulation

12. Sealing

13. Barrier track according to the invention

14. Mineral fiber 15. Wooden stand

16. PE film

17.Gypsum / cardboard board (fire-proof)

18. Lid / floor formwork

19. Slats 20. Wind barrier 21. Chipboard

Claims

1. Multi-layer barrier sheet between a first component and an adjoining further component, comprising - a carrier sheet coated on both sides, - wherein the double-sided coatings are covered with a protection, and - wherein at least the protection facing the further component is a film sheet which is in the web direction is divided into at least two separately detachable film webs.

2. barrier line according to claim 1, characterized in that in the coating on one or both sides an area is recessed, which corresponds in particular to the width of the further component.

3. barrier sheet according to claim 1, characterized in that the carrier sheet is coated over its entire surface and uniformly over its entire width.

4. barrier sheet according to one of claims 1 to 3, characterized in that the carrier sheet may contain any of the materials - be it individually or in combination - which are permitted by the standard DIN 18195-2 in Tables 4 to 10.

5. barrier sheet according to one of claims 1 to 3, characterized in that the carrier sheet contains materials made of polyolefins, polyester, polyamide, polyurethanes, polyacrylonitrile including appropriate block copolymers, metal and / or bituminous material which inhibit or block the diffusion of water.

6. barrier membrane according to one of claims 1 to 3, characterized in that as the carrier sheet films, fabrics, knitted fabrics, scrims and / or nonwovens based on fibers made of polyolefins, polyester, polyamide, polyurethanes, polyacrylonitrile including appropriate block copolymers, glass and / or natural materials are used, which may or may not be impregnated and / or laminated with polyolefins, polyester, polyamide, polyurethanes, polyacrylonitrile including appropriate block copolymers, metal and / or bituminous material.

7. barrier sheet according to one of claims 1 to 6, characterized in that the carrier sheet contains a material which inhibits or blocks the diffusion of water and / or water vapor.

8. barrier layer according to one of claims 1 to 7, characterized in that at least the coating facing the first component consists of a plastic mass.

9. barrier membrane according to one of claims 1 to 8, characterized in that the plastic mass has a melting or softening temperature in the range of 20 to 240 ° C measured according to DIN 52011.

10. barrier membrane according to one of claims 1 to 9, characterized in that the plastic mass has an elongation at break in the range of greater than 100% and a tensile strength in the range of greater than 0.1 N / 50 mm measured according to DIN 53354 with the test specimen A according to Table 1 and with a test speed according to DIN 53455 of 50 mm / min. +/- 10% according to test conditions A to V.

1 1. Barrier membrane according to one of claims 1 to 10, characterized in that the plastic mass has a needle penetration of 20 to 200 10 / mm according to DIN 52010.

12. Barrier according to one of claims 1 to 11, characterized in that the plastic mass consists of a material which inhibits or blocks the diffusion of water and / or water vapor.

13. barrier membrane according to one of claims 1 to 12, characterized in that the protection of the coating consists of films, fabrics, knitted fabrics, scrims and / or nonwovens.

14. Barrier according to one of claims 1 to 13, characterized in that the coating facing the first component is sprinkled with inert minerals.

15. Barrier membrane according to one of claims 1 to 14, characterized in that the film web facing the further component is divided into three separately detachable film webs, the average corresponding expediently to the width of the further component.

16. Arrangement with a barrier sheet - optionally without protective layers - according to one of claims 1 to 15 between a first component and a further component, in particular made of masonry, concrete, composite panels or wood, the first and / or the further component containing cement.

17. The arrangement according to claim 16, characterized in that the first component is the concrete slab / basement ceiling of a prefabricated house and the subsequent further component is a wooden stud wall.

18. Use of the multi-layer barrier sheet according to at least one of claims 1 to 15 between a first component and an adjoining further component, the first and / or the further Component contain cement and the barrier membrane - if necessary after removing the protective film - is pressed onto the component with not yet hardened cement.

19. Use according to claim 18, characterized in that the barrier sheet serves as a water vapor and moisture barrier between a first component and a subsequent further component.

20. Use according to one of claims 18 or 19, characterized in that the protective film web facing the further component is divided into three separately detachable webs, the mean corresponding to the width of the further component.

21. Use according to claim 20 to 24, characterized in that after removal of the central detachable protective film web, the further component is applied to the plastic mass and connected to the carrier web.

22. Use according to claim 18 or 19, characterized in that the barrier track in the region of the further component has neither coatings nor protective films and the further component is erected directly on the carrier web.

23. Use according to one of claims 20 to 22, characterized in that after removal of the outer removable protective film webs adjacent vapor barrier films and sealing films are attached to the plastic mass or the adhesive and are thus connected to the carrier web.

24. Use according to claim 23, characterized in that the adjacent sealing films consist of sealing materials according to DIN 18195-2, tables 4 to 10.