Wall structure, method for producing a wall structure, sealing web and system for sealing with a sealing web

Abstract

The invention relates to a floor structure or wall structure (1), having a wall (2) or a floor (14), in particular a masonry wall (2) or floor (14) or a wall (2) or floor (14) made of concrete or gypsum board; a plastic film (5) forming a sealing web; and a cover layer (3) such as a tile layer, wherein the plastic film (5) is connected to the cover layer (3) by a first mortar layer (10), and the plastic film (5) is further connected to the wall (2) by a first adhesive layer (8). In order to achieve an advantageous improvement of such a wall structure (1) leading to tightness, the invention proposes that the plastic film (5) has a second adhesive layer (9), the second adhesive layer (9) is applied directly to the plastic film (5), and the cover layer (3) is attached to the plastic film (5) by means of the first mortar layer (10) and the second adhesive layer (9). Furthermore, the invention relates to a method for producing such a wall structure, and to a sealing web. The invention further relates to a method for producing such a wall structure.

Description

Description Wall structure, method for producing a wall structure, sealing membrane and system for sealing with a sealing membrane field of technology

[0001] The invention relates initially to a floor or wall structure comprising a wall or floor, in particular a wall or floor made of masonry or concrete or plasterboard, a plastic film forming a sealing membrane and a covering layer such as a tile layer, wherein the plastic film is connected to the covering layer by means of a first mortar layer and the plastic film is further connected to the wall by means of a first adhesive layer.

[0002] The invention further relates to a method for producing a wall or floor structure comprising a wall or floor, in particular a wall made of masonry or concrete or gypsum board, or a floor made of masonry or concrete or gypsum board, a plastic film forming a sealing membrane and a top layer such as a tile layer.

[0003] The invention also relates to a sealing membrane for use in a wall structure, a system for sealing with a sealing membrane and a sealing tape, a sealing corner and a sealing sleeve. State of the art

[0004] From WO 2019 / 029962 Al a wall construction is known in which the sealing membrane is connected to the tile layer by means of a tile adhesive mat which has a foam plastic layer. 31234N1PCT - September 1, 2025

[0005] From DE 20 2022100 171 Ul a wall construction is known with a plastic film forming a sealing membrane, which is attached to the wall by means of an adhesive layer applied to its first flat side and on which a layer of tiles is attached by means of a fleece layer applied to its second flat side with an intermediate layer of tile adhesive. Summary of the invention

[0006] Starting from the aforementioned prior art, the invention addresses the problem of providing an advantageous wall or floor construction leading to a tightness and / or a method for producing an advantageous wall or floor construction leading to a tightness, as well as a sealing membrane and a system for sealing with a sealing membrane.

[0007] With regard to the wall or floor construction, the problem is initially and essentially solved by the subject matter of claim 1, wherein the plastic film has a second adhesive layer, the second adhesive layer is applied directly to the plastic film, and the top layer is attached to the plastic film by means of the first mortar layer and the second adhesive layer.

[0008] The plastic film is provided on each of its two opposite flat sides with an adhesive layer, the first and second adhesive layers respectively, with the adhesive layers each forming the bonding layer to a mortar layer.

[0009] Procedurally, it is important that first a first layer of mortar, in particular in the form of tile adhesive, is applied to a wall or floor in the usual manner, and then the prepared plastic film, which has the first or second layer on its opposite flat sides, is applied. 31234N1PCT - September 1, 2025 The adhesive layer is applied to the mortar layer, and finally the top layer is applied to the second adhesive layer and thus to the plastic film by means of a second mortar layer. This provides a simple and efficient method for applying a top layer to a wall or floor, especially a top layer in the form of tiles.

[0010] Regarding the sealing membrane for use in such a floor or wall construction, it is important that the plastic film designed as a sealing membrane has a thickness between 70 and 450 mm, even up to approximately 500 g / m², and that the first and / or second adhesive layer is designed in such a way that an adhesion tensile value of 0.8 N / mm² is achieved. 2 or more and / or a peel strength in the range of 10 to 30 N / 50 mm 2 This results in the arrest with the mortar layer.

[0011] Regarding the system, it is ultimately stipulated that it consists of a sealing membrane, as required, and a sealing tape and / or a sealing corner and / or a sealing collar, to achieve a seal in a space. The components of the system, including the sealing tape, the sealing collar and / or the sealing corner, are also each individually the subject of the application.

[0012] The wall or floor assembly is particularly reversible. Preferably, it is reversible in the sense that the plastic film, including the top layer, can be peeled off, leaving the first mortar layer on the wall or floor, in particular without damage to or residue from the plastic film, top layer, or bonding layer. Since the first bonding layer is designed to form a substantial, intimate bond with the first mortar layer, the plastic film can be removed from the wall or floor, i.e., the first mortar layer, essentially without damage. 31234N1PCT - September 1, 2025 The first adhesive layer can be removed from the plastic film without leaving any residue. The adhesive layer and any remaining components remain on the wall or floor. The same preferably applies to the top layer and its corresponding adhesive layer. This adhesive layer can form a sufficiently strong bond with the second mortar layer, so that the plastic film can ultimately be recovered separately during dismantling and is therefore recyclable.

[0013] The aforementioned advantages are particularly evident when the sealing layer is connected to a sanitary fixture, such as a bathtub or shower tray, over part of its length, and / or when several appropriately pre-formed and, in particular, pre-shaped sealing components are used as a system, especially a sealing tape and / or a sealing collar and / or a sealing corner in addition to the sealing membrane. Preferably, the sealing tape and / or the sealing corner and / or the sealing collar are constructed in the same manner as described here for the sealing membrane.

[0014] In one design, at least the first adhesive layer may have permanent adhesive properties. This layer may not be fully hardened. This allows the tile layer to be peeled off again if necessary, with separation occurring easily within the adhesive layer. This peeling process can also be described as peeling.

[0015] It is also preferred that the top layer is attached to the plastic film only by means of the first mortar layer and the second adhesive layer. 31234N1PCT - September 1, 2025

[0016] The wall structure preferably consists only of the top layer, the first and second mortar layers, the first and second bonding layers, the plastic film, and the wall itself.

[0017] Alternatively, and preferably, particularly if the first adhesive layer is water-based and / or contains a water-based adhesion promoter and / or aluminum oxide, silica, and / or silica sol, the first adhesive layer does not exhibit permanent adhesive properties. Upon contact with an object, it does not adhere directly to the object. Rather, its significance lies in the fact that the adhesive layer improves the bond with a mortar layer, particularly tile adhesive, or even enables this bond between the plastic film and the substrate. It imparts to the plastic film the same property as a nonwoven layer with regard to the aforementioned bond.

[0018] It is particularly preferred that no fleece layer is arranged or applied between the top layer and the wall. The entire wall assembly can be free of a fleece layer.

[0019] The first and / or second mortar layer should preferably be a mortar designed as a tile adhesive. In particular, a tile adhesive such as that used for the so-called thin-bed method.

[0020] It can be a cement-based mortar with or without additives.

[0021] With regard to the wall or floor construction, it is also preferred that the plastic film has a free-standing structure extending beyond the top layer. 31234N1PCT - September 1, 2025 This creates a way to grasp the plastic film, making it easier to remove the top layer, including the plastic film, if, for example, a different top layer is to be applied. Alternatively, a wall or floor construction without a plastic film overhang can be used. By cutting into the top layer, for example in the joint area between two tiles, the plastic film can be cut through and thus exposed to create a gripping area.

[0022] The first and / or second adhesive layer is preferably applied in a comparatively thin layer, for example with a thickness between 30 and 50 pm, more preferably about 40 pm.

[0023] The invention also relates to a plastic film forming a sealing membrane for use in a wall or floor structure as described above and / or for use in a method as described above.

[0024] It is preferred that the plastic film has a thickness between 70 and 500 pm and that the first and / or second adhesive layer is designed such that an adhesive tensile value of 0.2 N / mm² is achieved. 2 or more, preferably 0.7 N / mm 2 or more, for example in the range of 0.7 to 1 N / mm 2 , preferably 0.8 N / mm 2This results in the following: The tensile bond strength can preferably be determined according to DIN EN 1348. Furthermore, the first and / or second bonding layer is designed such that a peel strength in the range of 10 to 30 N / 50 mm is achieved. The peel strength depends on the substrate on which the sealing membrane is applied. Values ​​outside the specified range may also occur. In order to ensure a reproducible measurement of the 31234N1PCT - September 1, 2025 To achieve the peel strength, the measurement is preferably taken only when the sealing membrane itself is peeled off, i.e., without any additional covering layer, such as tiles or the like. In particular, the tensile adhesion value and / or peel strength refer to the bond between the plastic film and a mortar layer, especially, as already mentioned, a mortar layer in the form of tile adhesive.

[0025] If the same plastic film is also used for a cuff and / or a sealing corner and / or a sealing tape, as described in detail below, a thinner film than that used for the tape or floor construction is preferred. For example, a thickness of 30 to 50 mm, preferably approximately 40 mm.

[0026] This allows for a comparatively high tensile bond strength and a low peel strength. This makes it possible to easily remove such a top layer, if necessary, by peeling it off. Unless an overhang is used, as explained below, it may be necessary to first create an opening in the tile layer, possibly in the area of ​​a joint, down to the plastic film using a spatula or similar tool, and then chisel away a tile. Subsequently, an opening can also be made in the plastic film, thus providing a means of pulling and therefore peeling off the layer.

[0027] The first and / or second adhesive layer can be water-based and / or contain a water-based adhesion promoter. The first and / or second adhesive layer can contain aluminum oxide, silica, and / or silica sol. Alternatively, the first and / or second adhesive layer can consist of an adhesive, optionally a hot melt adhesive. Preferably, if a hot melt adhesive is used, the adhesive layer, which can be designed as a coating, is located between the wall and the plastic film. 31234N1PCT - September 1, 2025 The adhesive is applied to facilitate dismantling, whereas the hot melt adhesive is applied between the top layer, particularly a tile layer, and the plastic film. The pressure-sensitive adhesive can also be butyl or butyl-based. The hot melt or pressure-sensitive adhesive can also be applied to the wall or floor side in such a way that it can still be peeled off. However, this may result in significant residues remaining on the plastic film.

[0028] With regard to a coating or adhesive layer, and optionally also with regard to a hot melt adhesive coating, it is preferred that a thickness between 10 and 80 gm is given.

[0029] The film can also be a multi-layered film. For example, it could be a coextruded film. The coextruded film, or rather its multiple layers, can consist of different thermoplastics, such as polypropylene (PP) and polyethylene (PE), or of polyethylene and an ethylene-vinyl acetate copolymer (EVA).

[0030] With regard to a sealing tape and / or a sealing corner and / or a sealing sleeve, it is preferred that these – or even only these – consist of a plastic film or a plastic film material, as described above for the sealing membrane. In particular, therefore, of a plastic film material that has the described adhesive layer on one or both sides.

[0031] Particularly in the case of a sealing tape, but more preferably also in the case of a sealing corner and / or a sealing sleeve, it is preferred that for direct application, especially to a medical device such as a- 31234N1PCT - September 1, 2025 When used on a shower tray or bathtub, or when applied to a pipe fitting such as in the case of a sealing sleeve, an adhesive layer, preferably with permanent adhesive properties such as a butyl strip, is provided. The adhesive layer, in particular the butyl strip, may initially be covered by a release layer.

[0032] Using components such as sealing tape, sealing collars, or sealing corners, suitable seals can be achieved without the need for fleece. Capillary action, which can potentially lead to moisture transport and be caused by a fleece layer, is eliminated. Nevertheless, the aforementioned coating ensures good adhesion with mortars, especially tile adhesives.

[0033] The sealing tape described here can have a width of, for example, 100 to 140 mm, preferably approximately 120 mm. It can have a thickness of 0.3 to 0.5 mm, preferably approximately 0.35 to 0.4 mm, and more preferably 0.37 mm. Furthermore, it can additionally or alternatively have a material weight of approximately 250 to 350 g per m². 2 , preferably about 300 g per m 2 be realized.

[0034] These properties, with the exception of the width, are preferably also realized in a sealing corner or a sealing sleeve.

[0035] Regarding the sealing tape, a tape length or roll length of, for example, 10 to 20 meters can be provided.

[0036] In particular the sealing tape, but also the other items mentioned, can withstand a maximum tensile force, in the longitudinal direction, of approximately 115 N (15 mm). 31234N1PCT - September 1, 2025 exhibit. A maximum tensile force in the transverse direction according to the aforementioned standard can be 90 N (15 mm).

[0037] It is also preferred that the elongation at break in the longitudinal direction is approximately 1050% and the elongation at break in the transverse direction is approximately 560%.

[0038] A burst pressure can be approximately 1.6 bar.

[0039] The overall width of a butyl strip, which can be formed particularly on the sealing tape, can be approximately 16 to 20 mm, preferably 18 mm. The overall thickness of the butyl strip can be 0.4 to 0.8 mm, preferably 0.6 mm.

[0040] Regarding butyl, further results can be obtained by performing a rapid test on neutral water. A value of 30 N / 20 mm is required for PVC carriers. In any case, it is preferred that the value be greater than 13 N / 20 mm. Brief description of the drawings

[0041] The invention is further explained below with reference to the accompanying drawing, which, however, only represents an embodiment. This shows: Fig. 1 shows a first wall structure; Fig. 2 shows a deduction of the top layer from the wall structure; Fig. 3 shows a second wall structure; Fig. 4 shows a floor structure; 31234N1PCT - September 1, 2025 Fig. 5 shows an arrangement of the sealing membrane with additional sealing for a sanitary fixture; Fig. 6 a sealing sleeve; Fig. 7 a sealing strip; Fig. 8 a density corner; and Fig. 9 shows a perspective partial view of a corner of a sanitary fixture such as a bathtub, fitted with a sealing corner and a sealing tape. Description of the embodiments

[0042] A wall structure 1 is shown and described first. The explanations apply in the same way to a floor structure according to Figure 4, unless otherwise noted.

[0043] The wall assembly 1 initially consists of a wall 2. The wall 2 can be constructed in different ways. It can be a conventionally constructed brick wall. It can also be a concrete wall, perhaps even made from a precast concrete element. Furthermore, it can also be a drywall partition, for example, made of gypsum plasterboard. The floor 14 of the floor assembly according to Figure 4 can also be a concrete or screed floor.

[0044] The wall construction and procedure described here are not limited to vertical walls, although they are also suitable for vertical walls. 31234N1PCT - September 1, 2025 preferably used on vertical walls, especially in wet rooms.

[0045] In the floor structure, the area referred to as wall 2 represents floor 14.

[0046] A covering layer 3, consisting of tiles 4, is attached to wall 2. This is achieved using a plastic film 5, which has a first flat side 6 and a second flat side 7. A first adhesive layer 8 and a second adhesive layer 9, respectively, are applied to both the first flat side 6 and the second flat side 7. The first adhesive layer 8 and / or the second adhesive layer 9 can be water-based. Alternatively or additionally, the first adhesive layer 8 and / or the second adhesive layer can consist of a water-based adhesive. Alternatively or additionally, the first adhesive layer 8 and / or the second adhesive layer 9 can contain aluminum oxide, silica, and / or silica sol. The first adhesive layer 8 and / or the second adhesive layer 9 can also consist of a hot melt adhesive. In this case, the first or second flat side 6, 7 can be provided with an adhesive and / or adhesion promoter containing aluminium oxide, silica and / or silica sol, and the second or the first flat side 7, 6 with a hot melt adhesive.

[0047] The term "adhesive" should not imply that the coated plastic film, in its manufactured state before processing, possesses a stickiness in the sense of a pressure-sensitive adhesive. Rather, the adhesive is essential for achieving a surface finish on the plastic film that allows it to adhere better, or even in the first place, to a layer of mortar. It can therefore be, in particular, a type of adhesive that, upon contact, 31234N1PCT - September 1, 2025 This refers to adhesive that does not stick to a human hand, or the non-adherence of a coated surface of a plastic film.

[0048] Preferably, the adhesive is applied over the entire surface, and preferably without gaps, to the first or second flat side 6, 7 of the plastic film 5.

[0049] The plastic film 5 is preferably relatively thin, with a thickness preferably in the range of 70 to approximately 500 pm. All intermediate values ​​in increments of at least 1 pm or more within this range are also included in the disclosure. For example, 71 to 500 pm, 70 to 499 pm, 71 to 499 pm, 70 to 498 pm, 71 to 498 pm, 72 to 498 pm, etc. The resulting individual thickness values ​​are also included in the disclosure.

[0050] Furthermore, the plastic film 5 is preferably a polypropylene film.

[0051] The adhesion of the plastic film 5 to the wall 2, as well as preferably the adhesion of the top layer 3 to the plastic film 5, is achieved in each case without an intermediate layer of non-woven fabric. The coating of the plastic film with the adhesive layer allows for an adhesion of the plastic film, particularly to a mortar layer, comparable to that achieved with a non-woven fabric, without having to accept the disadvantages associated with a non-woven fabric, such as capillary action.

[0052] A first layer of mortar 10, preferably a tile adhesive, is applied between the wall 2 and the plastic film 5. Between the covering layer 3, in particular the tiles 4 31234N1PCT - September 1, 2025 Furthermore, a second mortar layer 11 is preferably applied to the plastic film 5. The first mortar layer 10 is connected to the plastic film 5 by means of, and particularly preferably solely by means of, the first adhesive layer 8, and the second mortar layer 11 is connected to the plastic film 5 in a correspondingly preferred manner solely by means of the second adhesive layer 9.

[0053] The first and / or second adhesive layer can have a thickness of 10 mm or more, up to, for example, 80 pm. In this respect as well, all intermediate values ​​are included in the disclosure as described above.

[0054] As further shown in Figure 1, the plastic film 5 can be arranged with an overhang 12 in the wall structure. This can create a gripping point to allow the top layer 3, along with the plastic film 5, to be peeled off if necessary, as illustrated in Figure 2.

[0055] Alternatively, as indicated, a cut can be made beyond the plastic film 5, particularly in the area of ​​a joint 13, and then the film can be peeled off. If necessary, this may also require, for example, "prying off" a tile or other component of the covering layer.

[0056] In this process, the first adhesive layer 8 can remain completely or partially attached to the wall 2, or the separation can also take place in the area of ​​the first adhesive layer 8.

[0057] Figure 3 shows another possible wall construction. This is a wall construction in which the wall already has a top layer, shown here as tiles 4, and on top of this... 31234N1PCT - September 1, 2025 The plastic film with the further covering layer was then applied. This can be important, for example, during renovations. Thus, on the side of the (first) tile layer or covering layer facing away from wall 2, the mortar layer 10 is applied according to Figure 1, and then, according to the structure also shown in Figure 1, the plastic film 5 with the first adhesive layer 8 and the second adhesive layer 9, followed by another mortar layer 11, and finally, to form the covering layer, as is preferred here, the tiles 4.

[0058] With reference to Figure 4, the floor structure is shown, which has practically the same conditions as the wall structure. The floor 14 can, for example, consist of concrete or screed.

[0059] With reference to Figure 5, and starting from a wall structure as shown in Figure 1 (though it could also be a floor structure as shown in Figure 4), it is illustrated that the plastic film 5 can be attached directly to a sanitary fixture 15, shown here only with respect to its edge area, for sealing purposes. The plastic film 5 protrudes downwards from the wall structure, approximately as shown. In this embodiment, the covering layer 3, consisting of tiles, is first applied (further up) to the second adhesive layer 9, which is constructed in the same way as in the wall area. Below one end of the tile covering or the covering layer itself, the film protrudes freely and is sealed to the sanitary fixture 15 by means of the adhesive layer 9. In this context, an adhesive layer 9 is particularly preferred as a bonding agent.This creates a moisture-proof seal between the wall structure and the sanitary fixture.

[0060] The transition from the wall structure to the sanitary fixture can also be achieved using a separate sealing tape 17, as further shown in Figure 7. 31234N1PCT - September 1, 2025 The desired result is achieved. This possible further construction is indicated by the dashed dividing line T between the wall structure as such and the transition area to the sanitary fixture 15. In particular, the sealing tape 17 may have a pre-applied adhesive layer already present in the commercial product, especially in the form of a butyl strip 19, which may be covered by a cover layer 20.

[0061] With reference to Figure 6, a sealing sleeve 16 is shown as a possible element of a system. The sealing sleeve 16 consists, for example, as shown, of an annular part, which can be formed as a plastic film, with the first and / or second adhesive layer 8, 9, as described for the sealing membrane. An inner opening of the sealing sleeve can, for example, have a diameter of 5 to 50 mm or more. An outer diameter can, for example, have a size of 30 to 100 mm or more. Preferably, the sealing sleeve is designed, as shown, as an annular part with an outer and inner circular edge.

[0062] With reference to Figure 7, a sealing tape 17 is shown. The sealing tape 17 can also have a structure corresponding to the cuff 16, i.e., with a central plastic film and a first and / or second adhesive layer 8, 9. The sealing tape preferably has an adhesive layer in the form of a butyl strip 19. The adhesive layer is further preferably covered by a release layer 20, which is peeled off accordingly before processing.

[0063] With reference to Figure 8, a sealing corner 18 is shown. The sealing corner 18 can also have the structure already described, corresponding to the sealing sleeve 16 or the sealing tape 17, i.e., a plastic film 5, possibly centrally located, and a first and / or second adhesive layer. 31234N1PCT - September 1, 2025

[0064] The dimensions of the layers are exaggerated in the figures, especially figures 6 to 9, solely for the purpose of illustration.

[0065] Figure 9 illustrates an application in which a sealing corner 18 is attached to a sanitary fixture 15 and is further surrounded, or rather encircled, by a sealing tape 17. As indicated by reference numeral 19, the sealing tape 17 in this application preferably also has an adhesive layer, more preferably in the form of a butyl strip. Thus, the sealing corner 18 can also be held to the sanitary fixture 15 by means of the tape 17. In addition, the sealing corner 18 can also be attached to the sanitary fixture 15 by means of separate adhesives, such as one or more of the adhesive sections mentioned below. Outside the adhesive layer of the sealing tape 17, it can also be additionally attached to the outside of the sealing corner 18 by means of separate adhesive sections.

[0066] It is evident that a floor area of ​​the sealing corner 18 extends under the sealed corner of the sanitary fixture 15.

[0067] With regard to the system, it is also preferred that adhesive sections, for example in the form of butyl sticks, are included, particularly with regard to the processing or bonding of a sealing corner and / or a cuff. These can be applied to a surface, in particular a sealing corner or a sealing cuff, as required. 31234N1PCT - September 1, 2025 List of reference symbols 1 Wall construction 2 walls 3 Top layer 4 tiles 5 plastic film 6 first flat side 7 second flat side 8 first adhesive layer 9 second layer of adhesion 10 first mortar layer 11 second mortar layer 12 Overhang 13 joint 14 Floor 15 sanitary fixtures 16 Sealing sleeve 17 Sealing tape 18 Density Corner 19 butyl strips 20 Cover layer T dividing line 31234N1PCT - September 1, 2025

Claims

1. Claims 1. Floor or wall assembly (1) comprising a wall (2) or a floor (14), in particular a masonry wall (2) or floor (14) consisting of concrete or gypsum board, a plastic film (5) forming a sealing membrane and a covering layer (3) such as a tile layer, wherein the plastic film (5) is connected to the covering layer (3) by means of a first mortar layer (10) and the plastic film (5) is further connected to the wall (2) by means of a first adhesive layer (8), characterized in that the plastic film (5) has a second adhesive layer (9), that the second adhesive layer (9) is applied directly to the plastic film (5) and that the covering layer (3) is attached to the plastic film (5) by means of the first mortar layer (10) and the second adhesive layer (9).

2. Floor or wall structure (1) according to claim 1, characterized in that the wall structure (1) can be dismantled while leaving the wall (2) and the first mortar layer (10).

3. Floor or wall construction (1) according to one of the preceding claims, characterized in that the top layer (3) is attached to the plastic film (5) only by means of the second mortar layer (11) and the second adhesive layer (9).

4. Floor or wall construction (1) according to one of the preceding claims, characterized in that the first and / or second mortar layer (10, 11) is a tile adhesive.

5. Floor or wall structure (1) according to one of the preceding claims, characterized in that the first and / or second adhesive layer (8, 9) 31234N1PCT - September 1, 2025 is water-based, and / or contains a water-based adhesion promoter, and / or contains aluminium oxide, silica and / or silica sol.

6. Floor or wall construction (1) according to one of the preceding claims, characterized in that the plastic film (5) can be isolated from the wall (2) and the top layer (3) practically without residue during dismantling.

7. Floor or wall structure (1) according to one of the preceding claims, characterized in that the first and / or second adhesive layer (8, 9) consists of an adhesive material.

8. Floor or wall structure (1) according to one of the preceding claims, characterized in that the plastic film (5) has a free extension projecting beyond the top layer (3).

9. Floor or wall construction (1) according to one of the preceding claims, characterized in that the sealing membrane is directly and sealingly connected to a sanitary object, such as a bathtub or a shower tray, over a part of its vertical or horizontal extent in the installed state by means of the second adhesive layer (9).

10. Method for producing a floor or wall structure (1) with a wall (2) or a floor, in particular a masonry wall (2) or a concrete or gypsum board wall (2) or a concrete floor, for example screed, a sealing membrane and a covering layer (3) such as a tile layer, characterized in that a first mortar layer (10), in particular in a configuration, is first applied to the wall (2) or the floor. 31234N1PCT - September 1, 2025 as tile adhesive, is applied, followed by the application of a sealing membrane formed on both sides with an adhesive layer, a first and a second adhesive layer (8, 9), as a plastic film (5), wherein the plastic film (5) is applied to the first mortar layer (10) by means of the first adhesive layer (8) and finally the cover layer (3) is applied to the second adhesive layer (9) and thus to the plastic film (5) by means of a second mortar layer (11).

11. Sealing membrane for use in a floor or wall structure (1) according to one of claims 1 to 9 and / or in a method according to claim 10, characterized in that the plastic film (5) designed as a sealing membrane has a thickness between 70 and 450 mm and that the first and / or second adhesive layer (8, 9) is designed such that an adhesive tensile value of 0.8 N / mm² is achieved. 2 or more and / or results in a peel value in the range of 10 to 30 N / 50mm.

12. Sealing membrane according to claim 11, characterized in that the first and / or second adhesive layer (8, 9) is water-based, and / or comprises a water-based adhesion promoter, and / or comprises aluminium oxide, silica and / or silica sol.

13. Sealing membrane according to claim 11, characterized in that the first and / or second adhesive layer (8, 9) consists of a hot melt adhesive.

14. Sealing membrane according to one of claims 11 to 13, characterized in that the first and / or second adhesive layer (8, 9) has a thickness of 10 mm more up to, for example, 80 mm. 31234N1PCT - September 1, 2025 15. Sealing tape and / or sealing corner and / or sealing collar for sealing in a room such as a sanitary room, preferably between a sanitary fixture and a wall or a floor, characterized in that the sealing tape and / or the sealing corner and / or the 5. Sealing sleeve made of a plastic film material which has a first and / or second adhesive layer.

16. Sealing tape and / or sealing corner and / or sealing collar for sealing in a room such as a sanitary room, preferably between a sanitary fixture and a wall or a floor, wherein the sealing tape and / or the sealing corner and / or the The sealing sleeve has a butyl layer.

17. System comprising a sealing membrane according to one of claims 11 to 14 and a sealing tape and / or a sealing corner and / or a sealing sleeve according to one of claims 15 or 16, for the most complete possible 15 Sealing of a room or part of a room, such as a wall or floor. 31234N1PCT - September 1, 2025

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