SEAL TAPE

Description

[0001] The present invention relates to a sealing tape with at least one base body made of soft foam that is resilient after compression.

[0002] Sealing tapes are generally used to seal joints between building components, especially frame profiles of windows or doors, and the building wall.

[0003] An example of such a sealing tape is known from EP 3 513 954 A1. The sealing tape comprises a foam carrier into which incisions are made alternately from the top and bottom. A strip of film, adhesive tape, or an adhesive-like medium is inserted into each of these incisions to form a barrier layer extending over part of the height between the top and bottom surfaces of the sealing tape. A section of each barrier layer is also arranged on the respective top or bottom surface. However, due to insufficient flexibility of a film or adhesive strip, or of a cured adhesive, air channels and / or water vapor diffusion channels can form between the sealing tape and the rough surface of the adjacent building wall. In such cases, it cannot be guaranteed that the sealing tape will exhibit the desired or intended sealing properties.Due to the multiple incisions made in the foam carrier from both sides and the insertion of the barrier layer components into the foam carrier, the production of a sealing tape in this manner is also very complex. Document EP 3 375 597 A2 discloses a sealing tape of this type.

[0004] The present invention is based on the objective of providing a sealing tape that can be manufactured simply and cost-effectively, and whose intended sealing properties are reliably achieved.

[0005] This problem is solved by the features of claim 1.

[0006] According to the invention, the sealing tape comprises at least one base body made of soft, compressible foam, wherein the sealing tape has a top surface, a bottom surface, and a first and a second side flank connecting the top surface and the bottom surface, the side flanks extending substantially perpendicular to a functional direction of the sealing tape. An adhesive layer for adhesion to a component, in particular a frame profile of a window or door, is arranged in the area of ​​the bottom surface. The sealing tape has a continuous barrier structure for reducing water vapor diffusion permeability and / or air permeability in the functional direction, wherein the barrier structure extends from the top surface of the sealing tape to a bottom surface of the at least one base body.The barrier structure also extends over an area of ​​the top surface of the sealing tape and, at least in that area, consists of or is formed from closed-cell foam. At least in the area of ​​the top surface of the sealing tape, the barrier structure has a thickness between 10 µm and 5 mm.

[0007] This method provides a sealing tape that is easy and inexpensive to manufacture and ensures a reliable seal. The fact that the barrier structure, at least on the top side of the sealing tape, comprises a closed-cell foam offers the advantage that the soft foam conforms particularly elastically to the building wall, thus preventing the formation of air channels and / or water vapor diffusion channels between the sealing tape and the building wall in the direction of operation.

[0008] By selecting a suitable material for the barrier structure, the sealing properties of the sealing tape can be specifically adjusted with regard to water vapor diffusion permeability and / or air permeability. This enhances the functionality of the sealing tape.

[0009] The barrier structure can, for example, be laminated or covered onto the at least one base body, as is known to those skilled in the art for joining two bodies comprising foam.

[0010] The suitability of the barrier structure for the tightest possible fit against the wall and for improving the sealing effect of the sealing tape is influenced by the material properties of the barrier structure.

[0011] The closed-cell foam of the barrier structure is therefore, in a preferred embodiment, made of polyurethane, polyethylene, polyvinyl chloride, polyolefin or polypropylene and has a density between 15 and 200 kg / m³.

[0012] Preferably, the closed-cell foam of the barrier structure has a compression hardness between 2 kPa and 15 kPa, preferably between 2.1 kPa and 10 kPa, more preferably between 2.2 kPa and 5 kPa based on a compression of 40% relative to the initial height (CV40) according to DIN EN ISO 3386:2015.

[0013] For the purposes of this application, closed-cell foam is understood to mean a flexible foam that has an increased number of closed cells or cells with only a small opening cross-section. Closed-cell foam is characterized solely by its air permeability. In preferred embodiments, the air permeability of a closed-cell foam is at most 50 l / (m²s), or more preferably at most 40 l / (m²s), or more preferably at most 30 l / (m²s), or more preferably at most 20 l / (m²s), measured according to DIN EN ISO 9237:1995; test area 100 cm²s at a test pressure (vacuum) of 1.0 mbar, test apparatus Frank 21443.

[0014] Preferably, the barrier structure has a thickness of between 15 µm and 3 mm, preferably between 50 µm and 2 mm, at least in the area of ​​the top side of the sealing tape.

[0015] The barrier structure extends completely between a top surface of the at least one base body and a bottom surface of the at least one base body to achieve the desired seal over the entire cross-section of the at least one foam base body.

[0016] In general, the at least one base body is oriented like the sealing tape, i.e., the upper surface of the at least one base body is arranged in the area of ​​the upper surface of the sealing tape and preferably extends parallel to it, and the lower surface of the at least one base body is arranged in the area of ​​the lower surface of the sealing tape and preferably extends parallel to it. If no further component of the sealing tape is arranged on the upper surface or the lower surface of the at least one base body, these simultaneously form the upper surface or lower surface of the sealing tape, respectively. If, however, further components of the sealing tape are arranged on the upper surface or the lower surface of the at least one base body, such as a barrier layer or an adhesive layer, then the surface of these components facing away from the other components forms the upper surface or lower surface of the sealing tape in that area.

[0017] The barrier structure extends along the top surface of the sealing tape in this area, forming the top surface of the sealing tape in this region. Preferably, the barrier structure is firmly bonded to the top surface of the at least one base body, e.g., by gluing or laminating it.

[0018] Die The barrier structure extends across the entire width of the sealing tape on the top side, i.e., from the first side flank to the second side flank.

[0019] In claim 1, the width of the sealing tape is defined as the distance between the side flanks of the sealing tape in a direction parallel to the functional direction.

[0020] The barrier structure can meet the adhesive layer on the underside of the at least one base body, which optionally forms part of the barrier structure. The barrier structure can terminate on the underside of the at least one base body and, for example, meet the adhesive layer there.

[0021] The barrier structure can also extend along the underside of the at least one base body. In a preferred embodiment, the barrier structure extends along the underside of the at least one base body and over at least 1% of the width of the sealing strip, more preferably over at least 5% of the width of the sealing strip, and even more preferably over the entire width of the sealing strip, i.e., from the first side flank to the second side flank.

[0022] The barrier structure extends along the top surface to an area between the first and second side faces, running from the top towards the underside of the sealing tape. Sensitive parts of the barrier structure are thus protected from damage caused by external influences during transport or handling, as parts of the at least one base body made of soft foam are arranged on both sides of the section running from the top towards the underside.

[0023] Preferably, the barrier structure then extends along the underside of the at least one base body from the area between the first and second side flanks towards at least one of the first and second side flanks.

[0024] In one embodiment, the locking structure extends on the top surface and runs along the underside of the at least one base body from the area between the first and second side flanks to at least one of the first and second side flanks.

[0025] Preferably, the barrier structure is flush with the side flanks of the sealing tape. In some embodiments, however, the barrier structure can also begin or end at a small distance from the side flanks.

[0026] In one embodiment, the barrier structure extends on the top surface from the first side flank to the area between the first and second side flanks, runs from the top surface towards the underside of the sealing tape, and then extends along the underside of the at least one base body from the area between the first and second side flanks to the second side flank. This allows a continuous barrier structure to be formed while simultaneously saving barrier structure material, since it only needs to be provided in certain areas and not across the entire width of the sealing tape on the top surface and along the entire width of the underside.

[0027] In another embodiment, these advantages can also be achieved by extending the barrier structure on the top surface from the first side flank to the area between the first and second side flanks, then running from the top surface towards the underside of the sealing tape, and subsequently extending along the underside of the at least one base body from the area between the first and second side flanks to the first side flank. This also increases the variety of possible embodiments and manufacturing variants, making it easier to adapt to specific requirements.

[0028] A sealing tape is particularly easy to manufacture in a further embodiment in which the barrier structure extends on the top side from the first and second side flanks to the area between the first and second side flanks, runs from the top side towards the underside of the sealing tape and then extends along the underside of the at least one base body from the area between the first and second side flanks to the first and second side flanks.

[0029] It is also conceivable to consider embodiments in which the barrier structure extends on the top side from the first and second side flanks to the area between the first and second side flanks and extends along the underside of the at least one base body from the area between the first and second side flanks only to the first or the second side flank.

[0030] Preferably, the upper surface of the sealing tape has a profile with at least one depression such that, in a fully expanded state, the sealing tape has a first height in the region of the first side flank, a second height in the region of the second side flank, and a third height in the region between the first and second side flanks, which is lower than both the first and second heights. In the fully expanded state of the sealing tape, the interior of the depression is filled exclusively with air. The barrier structure then extends from the upper surface towards the lower surface, passing through the region of the third height. The sealing tape thus formed can be manufactured particularly easily and cost-effectively. The air-filled depression has, among other things, a positive effect on the thermal insulation achievable by the sealing tape.The interior of the depression is defined herein as the space bounded by a curved section of the top of the sealing tape in the area of ​​the depression and an imaginary extension of a flat section of the top of the sealing tape in the area of ​​a side flank over the curved area.

[0031] The height of the sealing tape is defined in a direction between the top and bottom of the sealing tape and perpendicular to the functional direction of the sealing tape, preferably parallel to the side flanks.

[0032] In a preferred embodiment, the first and second heights are essentially the same. This results in identical contact pressure of the sealing tape against the building wall on both side faces.

[0033] In a preferred embodiment, the third height is between 2 and 95%, more preferably between 3 and 80%, more preferably between 5 and 50% of the first height.

[0034] The first height and / or the second height of the sealing tape in the fully expanded state is preferably between 5 and 150 mm, more preferably between 10 and 100 mm in all embodiments.

[0035] The third height of the sealing tape in the fully expanded state is preferably between 1 and 142 mm, more preferably between 2 and 95 mm, in all embodiments.

[0036] In a preferred embodiment of the sealing tape, the area of ​​the third height is arranged essentially centrally between the two side flanks.

[0037] Preferably, the depression extends over a range of 2 to 60%, more preferably 5 to 40% of the total width of the sealing strip.

[0038] The width of the sealing strip is between 10 and 500 mm in all embodiments, more preferably between 10 and 150 mm.

[0039] The bottom surface of the at least one base body can be flat when the sealing tape is fully expanded. However, the bottom surface of the at least one base body can also have a profile with a lower depression that is oriented towards the top of the sealing tape and is opposite the depression on the top surface in the region of the third height.

[0040] The adhesive layer can then, in the fully expanded state of the sealing tape, have a profile with a hill-like shape and essentially follow the shape of the lower depression. In the latter case, the adhesive layer is preferably bonded to adjacent areas of the sealing tape essentially continuously along the underside.

[0041] Regardless of the profile of the base surface of the at least one base body, in certain embodiments the adhesive layer is flat when the sealing tape is fully expanded. For this purpose, it can be advantageous for the adhesive layer to adhere to the adjacent areas of the sealing tape only in the regions bordering its side faces. It is conceivable that the adhesive layer is only sticky on its upper surface in those areas where it comes into contact with parts of the sealing tape. The adhesive layer can, for example, be applied to the sealing tape subsequently as a separate strip.

[0042] In all cases, the adhesive layer is preferably designed as a double-sided adhesive tape. Generally, the adhesive surface of the layer used for attachment to the component faces downwards, i.e., away from the base material, and may be covered by a release film or paper that can be removed before use.

[0043] The reduced third height in the fully expanded state of the sealing tape is preferably achieved at least partially by permanent compression and / or fusion of the foam of the at least one base body. Although not strictly necessary, it is particularly preferred if the barrier structure is partially formed by a permanently compressed and / or fused section of the at least one base body. Part of the barrier structure can thus be easily created during the compression / fusion process. The compression and / or fusion of the at least one base body not only creates the desired surface profile of the sealing tape, but also provides an additional sealing effect.

[0044] The embodiments described above can each comprise exactly one, preferably integral, base body made of soft foam. However, they can also comprise two or more base bodies arranged side by side in the functional direction of the sealing tape. Regardless of the number of base bodies, the sealing tape can also have several lower and / or upper recesses arranged side by side in the functional direction.

[0045] In a preferred embodiment, the sealing tape has at least two base bodies made of soft foam, which are arranged next to each other in the functional direction of the sealing tape, wherein the barrier structure extends at least partially in a transition area between the two adjacent base bodies from the top towards the bottom of the sealing tape.

[0046] If the sealing tape has a section with a third height, this is preferably formed in the transition area between the base bodies. The lower third height can then be achieved, for example, by permanently compressing one base body near the transition area to the adjacent base body. Alternatively, the lower third height can also be achieved by permanently compressing two adjacent base bodies near the transition area between them.

[0047] Preferably, the at least two base bodies are designed as originally separate units. This makes it possible to form the two base bodies from different foam materials and consequently to easily influence the sealing and insulating properties of the sealing tape. However, the two base bodies can also be made from the same foam.

[0048] The at least two base bodies can be bonded to each other solely via the adhesive layer on their undersides. Preferably, however, the at least two base bodies are additionally or alternatively permanently bonded to each other in the transition area, e.g., by means of the barrier structure or a further adhesive layer between the base bodies. This achieves greater stability of the sealing tape. The barrier structure is then preferably formed partially by such an adhesive layer. Preferably, the height of such an adhesive layer in the transition area in the fully expanded state of the sealing tape is 2 to 80%, more preferably 3 to 60%, and particularly preferably 5 to 50% of the first height.

[0049] In a preferred embodiment, the barrier structure is designed as a continuous, preferably one-piece, barrier layer extending along the top surface of the sealing tape along the top surface of at least one of the at least two base bodies, from the top surface towards the bottom surface of the sealing tape, and along the bottom surface of at least one of the at least two base bodies. Preferably, the continuous barrier layer extends between two adjacent base bodies from the top surface towards the bottom surface of the sealing tape. For example, the barrier layer can extend from the first or second side face along the top surface of one base body to the transition region and along the bottom surface of an adjacent base body from the transition region to the other side face.

[0050] In an alternative embodiment, at least one base body has a covering that surrounds the base body on its top, bottom, and a side facing an adjacent base body. Preferably, the covering forms part of the barrier structure or the entire barrier structure.

[0051] In an exemplary embodiment, the sealing tape comprises exactly two base bodies, both of which have a corresponding covering.

[0052] If compression of one or the two base bodies near the transition region is desired, this is preferably achieved using or supported by the encapsulation. In some embodiments, however, no significant compression of the base bodies near the transition region is provided.

[0053] In one possible embodiment, at least one base body has a first leg of the base body bent 180° relative to a second leg of the base body, with the bending point being located in the transition area to the other base body. Preferably, the first and second legs are joined to each other at their overlapping surfaces, particularly preferably by bonding or laminating them together. In this embodiment, the respective base body can also have a covering as described above.

[0054] Preferably, the foam material of such a base body is compressed in itself in the area of ​​the bending point due to the bending.

[0055] In preferred embodiments, the covering consists essentially of closed-cell soft foam or is formed from such material. It is important to note that the barrier structure must comprise closed-cell soft foam, at least in the area of ​​the top surface of the sealing tape. For example, if only the covering of one base body forms the barrier structure in the top surface area, this covering must consist of closed-cell soft foam or be made of such material. However, if the sealing tape has at least one further base body with a covering, or if the barrier structure comprises further components in the top surface area that include closed-cell soft foam, the covering may also be made of a different material.

[0056] Regardless of how many base bodies the sealing tape comprises, in a preferred embodiment the barrier structure is partially formed by a barrier layer arranged on the top side of the at least one base body.

[0057] The barrier layer arranged on the upper side of the at least one base body comprises closed-cell flexible foam or is formed from it to ensure a tight seal between the upper side of the sealing tape and the building wall. It must also be taken into account that at least part or the entire barrier layer in the upper surface area comprises closed-cell flexible foam.

[0058] In embodiments with a lower third height, it is further preferred that the barrier layer arranged on the upper surface of the at least one base body is permanently compressed and / or fused in the region of the third height of the sealing strip. This is particularly advantageous if the permanent compression and / or fusion of this barrier layer occurs during the manufacturing process together with the compression and / or fusion of the base body material.

[0059] It is also preferred that the barrier structure is partially formed by a barrier layer arranged on the underside of the at least one base body.

[0060] This barrier layer can be formed by the adhesive layer located in the area of ​​the underside, or can consist of or be formed from essentially closed-cell soft foam.

[0061] In this particular case, but also in other embodiments, the barrier structure can be partially formed by the adhesive layer located on the underside.

[0062] Even in the case of a lower barrier layer, it is preferred in embodiments with a lower third height that the barrier layer arranged on the underside of the at least one base body is permanently compressed and / or fused in the region of the third height of the sealing tape. This is particularly advantageous if the compression and / or fusion takes place in a single manufacturing step together with the compression and / or fusion of the base body material and / or the compression and / or fusion of a barrier layer arranged on the top side of the sealing tape.

[0063] Preferably, the compression and / or fusion of the base body, and more preferably also the compression and / or fusion of the barrier layer on the top side, and even more preferably also the compression and / or fusion of the barrier layer on the bottom side, is achieved by means of bonding, stitching, lamination, or fusing. In this way, the compression and / or fusion can be permanently achieved without the need for additional elements in the area of ​​the depression on the top side of the sealing tape. All of the above-mentioned methods of compression and / or fusion can be carried out simultaneously for the individual superimposed layers, i.e., in a single step.

[0064] In general, the height of the permanently compressed and / or fused section of all layers involved in the fully expanded state of the sealing tape is preferably 2 to 50%, more preferably 3 to 40%, and particularly preferably 5 to 30% of the first height.

[0065] In general, the barrier structure can be formed in one piece and is then preferably made entirely of the same material. This can be the case, for example, if the barrier structure forms the encapsulation of a base body or if the barrier structure consists of a single, continuous barrier layer.

[0066] Alternatively, the barrier structure can also be multi-part, with the individual components preferably being sealed together. This can be the case, for example, if the barrier structure consists of an upper barrier layer, a compressed and / or fused section of at least one base body, and a lower barrier layer (optionally formed by the adhesive layer on the underside of the sealing tape). After joining them, e.g., by fusing, the individual parts of the barrier structure may no longer be visually distinguishable from one another. A continuous barrier layer can also be composed of several barrier layer sections, e.g., an upper barrier layer, a lower barrier layer, and a barrier layer section connecting them.

[0067] The barrier structure, preferably formed at least partially by a covering or barrier layer in the area of ​​the top surface of the sealing tape, can also be multi-layered. It is important to ensure that at least the side or layer of the barrier structure facing away from the other components of the sealing tape and thus facing a wall comprises or is formed from a closed-cell foam. In other words, the barrier structure comprises or is formed from a closed-cell foam at least in the area where it forms the top surface of the sealing tape.

[0068] For easier handling, transport, and space-saving storage, the sealing tape according to the invention is preferably provided in the form of a sealing tape roll. The sealing tape in the sealing tape roll is in a compressed state in which the top and bottom surfaces of the sealing tape are essentially straight. The sealing tape is wound onto the sealing tape roll such that the underside of one turn of the sealing tape rests against the top surface of an adjacent turn, and the side faces of the sealing tape form the end faces of the sealing tape roll. If the top and / or bottom surface of the sealing tape has a depression in its fully expanded state, this depression is significantly less pronounced in the state wound onto the sealing tape roll than in the fully expanded state.

[0069] The degree of compression of the first and / or second side flank in the compressed state on the sealing tape roll is preferably between 3 and 50%, more preferably between 5 and 25%, compared to the fully expanded state. The degree of compression here refers to the percentage of the height in the compressed state compared to the height in the fully expanded state.

[0070] In its installed state, the sealing tape is arranged within a section of the building structure. This section comprises a wall and a component inserted into an opening in the wall, with the sealing tape positioned in a joint between the component and the wall, sealing the joint. The side faces of the sealing tape are oriented towards an interior or exterior surface, and the tape is preferably bonded to the component by means of the adhesive layer on its underside. Compared to its uncompressed or fully expanded state, the sealing tape is partially compressed in its installed state.

[0071] It is preferred that the top surface of the sealing tape, in this partially compressed installation state, rests against the wall in the area of ​​the tape's side flanks, while the top surface of the sealing tape, at least in the area of ​​its original third height, does not rest against the wall or rests against the wall with less contact pressure than in the area of ​​the tape's side flanks. This is achieved primarily by a reduced third height of the sealing tape in its fully expanded state.

[0072] The degree of compression of the first and / or second side flank in the partially compressed installed state is preferably between 5 and 90%, more preferably between 10 and 70%, compared to the fully expanded state. Here, the degree of compression refers to the percentage of the height in the partially compressed state compared to the height in the fully expanded state.

[0073] The foam of the sealing tape can be made from any open-cell or mixed-cell flexible foam, for example polyurethane, polyethylene, polyvinyl chloride, polyolefin, or polypropylene. The density of such flexible foams ranges between 15 and 200 kg / m³.

[0074] The foams described herein can also be designed to have a skin on an outer surface. This applies both to the at least one base body made of soft foam and to the barrier structure, which comprises or is formed from a closed-cell foam. Such a skin is an integral part of the respective foam, but exhibits enhanced sealing properties compared to the rest of the foam and can protect it from external influences. For example, the skin can ensure that the foam is essentially waterproof. Nevertheless, the skin possesses the necessary flexibility to allow for optimal adhesion to a wall surface. A corresponding skin on at least one of the top, bottom, or side surfaces of the at least one base body can therefore optionally form part of the barrier structure.The skin can be formed during the manufacturing of the respective foam. Alternatively, it can be formed during the application of further components, such as when laminating the closed-cell foam barrier structure onto the at least one base material. A skin is particularly easy to create with polyurethane foams.

[0075] When multiple base bodies are present, the individual base bodies of the sealing tape preferably consist of the same material. Alternatively, the individual base bodies can be made of different materials.

[0076] More than two basic bodies can also be arranged next to each other.

[0077] The at least one base body is preferably at least partially, and more preferably completely, impregnated with an impregnating agent to delay its expansion. The impregnating agent preferably comprises an acrylate dispersion. In an advantageous embodiment, the acrylate dispersion comprises acrylate polymer particles dispersed in a homogeneous phase. Particularly preferably, the foam of the base body is impregnated with a weight fraction of acrylate dispersion for delayed expansion such that the sealing tape, at 20°C and 50% relative humidity, expands from a compression level of approximately 9% to 13% to a fully sealed joint in less than 24 hours.

[0078] The air permeability of the soft foam of the at least one base body is preferably between 50 and 1,000 l / (m²s), more preferably between 60 and 600 l / (m²s), and particularly preferably between 80 and 400 l / (m²s). All information regarding air permeability provided in this application refers to a determination under standard conditions of a 10 mm thick foam piece (fully relaxed) at a test pressure of 1.0 bar, test area 100 cm²s; Frank device 21443; DIN EN ISO 9237:1995.

[0079] Preferably, the soft foam of the at least one base body has a compression hardness of more than 2 kPa. Preferably, the compression hardness is more than 2.1 kPa, more preferably more than 2.2 kPa, and particularly preferably more than 2.3 kPa. The compression hardness is preferably less than 4 kPa, more preferably less than 3.8 kPa, and more preferably less than 3.6 kPa. Compression hardness is a measure of the foam's strength. The values ​​given here are based on a compression of 40% of the original height. The compression hardness is determined according to DIN EN ISO 3386:2015, and the CV40 value is specified.

[0080] Provided that the barrier structure has a closed-cell foam or is formed from such a foam in at least one area of ​​the upper surface of the sealing tape, the barrier layers and coatings described herein may also include the following materials and properties. The properties and relationships explained below for the barrier layer and the coating apply generally to the barrier structure described herein in its various forms.

[0081] Particularly preferably, each barrier layer or encapsulation comprises a substantially closed-cell soft foam or is formed exclusively from such a material. The closed-cell foam is preferably not impregnated.

[0082] Any barrier layer or coating described in this application may also be formed from a film-like material or an adhesive, in particular from a strip of film, a strip of adhesive tape or an adhesive-like liquid medium.

[0083] More specifically, each barrier layer or coating described herein can be formed from a film of polyamide, polyurethane, polypropylene, or copolymers thereof. Likewise, each barrier layer or coating can also be formed from a dispersion adhesive, in particular an acrylate adhesive, or another suitable pressure-sensitive adhesive.

[0084] In all embodiments, each barrier layer or covering can be multilayered, for example, from any combination of several of the materials mentioned above. It can also include, for example, a membrane layer and / or a nonwoven layer. In particular, each barrier layer or covering can be designed as a multilayer composite layer. At least one layer of at least one other material can be arranged on one or both sides of the functional layer. The one or both of these additional layers, which partially or completely cover the functional layer, can protect, support, and reinforce it, thereby increasing the stability of the barrier layer or covering. The individual layers can each consist of the same or different materials.

[0085] The layers arranged on one or both sides can be, in particular, nonwovens, woven fabrics, or grids made of inert materials such as polyethylene, polyurethane, polypropylene, polyester, glass fibers, or viscose, optionally also perforated films, especially those made of polyethylene, polyurethane, polypropylene, or polyester. The layers can generally consist of any suitable material in layered form, preferably with a sD value not higher than that of the functional layer. The layers arranged on one or both sides can consist of a dispersion adhesive, in particular an acrylate adhesive.

[0086] If an upper and a lower barrier layer are present, they can be made of the same material or of different materials. Each barrier layer or coating can also consist of different sections made of different materials.

[0087] All the aforementioned materials for the barrier layer or encapsulation can be applied to and bonded to the soft foam of any base body particularly easily and with good control. Furthermore, these materials are especially well-suited as barrier structure materials because their sealing properties can be specifically adjusted.

[0088] Each barrier layer or coating has a thickness of 1 µm to 5 mm, preferably 10 µm to 3 mm, particularly preferably 50 µm to 2 mm.

[0089] Each barrier layer or coating can generally, within the scope of the invention, preferably form a continuous, non-porous, and non-perforated layer. The air permeability of each barrier layer or coating is preferably in the range of 0.01–50 l / (m²s), more preferably in the range of 0.01–20 l / (m²s). Preferably, the air permeability is ≤ 3–6 l / (m²s), or more preferably ≤ 1–2 l / (m²s), or ≤ 0.2–0.5 l / (m²s), or particularly preferably ≤ 0.1–0.3 l / (m²s) according to DIN EN ISO 9237:1995; test area 100 cm²s at a measuring pressure (vacuum) of 1.0 mbar, test device Frank 21443, or is no longer measurable.

[0090] The water vapor diffusion resistance of a sealing tape is characterized by its water vapor diffusion value per unit air layer thickness in meters, the so-called sD value. Preferably, each barrier layer or covering has an sD value of 0.02 m to 100 m, more preferably 0.1 m to 25 m or 0.2 m to 15 m (at 25% relative humidity). The sD value is tested according to DIN EN ISO 12572:2001. Independently of this, or in combination with it, each barrier layer or covering can have an sD value of 0.02 m to 10 m, 0.03 m to 6 m, or 0.05 m to 2 m at 72.5% relative humidity, according to DIN EN ISO 12572:2001. For example, the sD value at 25% relative humidity can be... Relative humidity (RH) is in the range of 1 to 10 m and at 72.5% RH in the range of 0.1 to 5 m. Unless otherwise specified in DIN EN ISO 12572:2001, the sD values ​​refer to a temperature of 20°C.

[0091] Each barrier layer or coating can also be designed to be moisture-variable, i.e., its water vapor diffusion resistance changes depending on the humidity of the environment surrounding the barrier layer.

[0092] The following relationships apply to each sealing tape according to the invention. The decisive factor for the air permeability of a sealing tape section is generally the overall reduction of an airflow in one direction across the entire cross-section of the sealing tape section. If, for example, a plurality of barrier structure sections and base bodies are arranged alternately in the vertical or functional direction of the sealing tape, the reduction of the airflow through all these barrier structure sections and base bodies must be taken into account. The air permeability of the entire sealing tape in the functional direction is preferably less than 50 l / (m²<s), more preferably less than 40 l / (m²<s), more preferably less than 30 l / (m²<s), more preferably less than 20 l / (m²<s), more preferably less than 10 l / (m²<s), more preferably less than 5 l / (m²<s), under the measurement conditions specified above.

[0093] In one embodiment, the sealing tape further comprises an additive material that is applied to a surface of the at least one base body and / or to a barrier layer or coating and / or is contained in the impregnating agent of the at least one base body. The additive material can impart special properties to the sealing tape. Suitable additive materials include, in particular, materials for fire protection (e.g., expandable graphite, non-combustible solids, CO₂ emitters, etc.), materials for insulation (e.g., polyurethane foam, resins, sealants, etc.), materials for sealing against moisture (e.g., hydrophobic or hydrophilic substances, substances that swell upon contact with water, etc.), materials for sound insulation, materials for controlled ventilation (e.g., catalysts, etc.), materials for hygiene (e.g., disinfectants, etc.), and / or materials for triggering the expansion of the sealing tape (e.g., blowing agents, heat sources, etc.).To the expert, alternatives are apparent here with regard to the arrangement as well as the type and properties of the additional material, which can be used to meet the respective requirements.

[0094] Further features and advantages of the present invention will become apparent from the following description with reference to the drawings. Fig. 1 is a schematic cross-sectional view of a first embodiment of a sealing tape according to the invention in a fully expanded state; Fig. 2 is a schematic perspective view of the sealing tape wound into a sealing tape roll made of Fig. 1 Fig. 3 is a schematic cross-sectional view of a second embodiment of the sealing tape according to the invention in a fully expanded state; Fig. 4 is a schematic cross-sectional view of another sealing tape in a fully expanded state; Fig. 5 is a schematic cross-sectional view of another embodiment of the sealing tape according to the invention in a fully expanded state; Fig. 6 is a schematic cross-sectional view of another embodiment of the sealing tape according to the invention in a fully expanded state; Fig. 7 is a schematic cross-sectional view of another embodiment of the sealing tape according to the invention in a fully expanded state; Fig. 8 is a schematic cross-sectional view of another sealing tape in a fully expanded state; Fig.Fig. 9 is a schematic cross-sectional view of a further embodiment of the sealing tape according to the invention in a fully expanded state; Fig. 10 is a schematic cross-sectional view of a further sealing tape in a fully expanded state; Fig. 11 is a schematic cross-sectional view of a further sealing tape in a fully expanded state; Fig. 12 is a schematic cross-sectional view of an installation situation of the sealing tape made of . Fig. 1 , in which the sealing tape is arranged in a partially compressed installation state in a joint between a component and a wall; and Fig. 13 is a schematic cross-sectional view of an installation situation of the sealing tape made of Fig. 9 , in which the sealing tape is arranged in a partially compressed installation state in a sealing joint between a component and a wall.

[0095] The in Fig. 1 The sealing tape 2, shown in cross-section, comprises a base body 4 made of soft, compression-recoverable foam, which is preferably impregnated for delayed recovery. The base body 4 is originally designed as a single piece, but in a central area, it is flatter than in the areas to the right and left of it due to permanent compression and / or fusion of the material of the base body 4.

[0096] The illustrated sealing tape 2 has a top surface 6, a bottom surface 8, and two side flanks 10 connecting the top surface 6 and bottom surface 8. The side flanks 10 extend essentially perpendicular to a functional direction F of the sealing tape, in which the sealing tape will be oriented in its later installed state (see Fig. 12 ) is intended to seal a joint against air penetration and / or water vapor diffusion.

[0097] In the area of ​​the underside 8, an adhesive layer 12 is arranged, which in the illustrated example runs flat and serves to adhere to a component 14 (see Fig. 12 ), for example, a frame profile of a window or door. The adhesive layer 12 is preferably designed as a double-sided adhesive tape and adheres to the adjacent areas of the sealing tape on its upper side. The adhesive surface of the adhesive layer 12, which serves for attachment to the component 14, faces downwards and is usually covered by a release film or paper that can be removed before use. In the illustrated example, it is also conceivable that the adhesive layer 12 is only adhesive on its upper side in the areas where it comes into contact with areas of the sealing tape.

[0098] The top surface 6 of the sealing tape 2 has a profile with a depression 16 in a central region between the side flanks 10 of the sealing tape 2. The interior of the depression 16 is filled exclusively with air. In the region of the depression 16, the top surface 6 of the sealing tape 2 is curved. In the region of the side flanks 10, the top surface 6 of the sealing tape 2 is essentially flat. The interior of the depression 16 is defined as the space bounded by the curved section of the top surface 6 and an extension of the essentially flat section of the top surface 6 across the depression 16.

[0099] Due to the depression 16 being filled only with air, the sealing tape 2 has the advantage over sealing tapes with a rectangular cross-section that it exhibits higher thermal insulation due to the larger quantity of air arranged in the central area of ​​the sealing tape 2. All other listed embodiments of the sealing tape with at least one depression 16 on the top 6 or bottom 8 also provide this advantage.

[0100] In the region of the first (right) side flank 10, the sealing tape 2, in its fully expanded state, has a first height h1 that corresponds to the height h2 of the second (left) side flank 10. At the apex of the depression 16, however, the sealing tape 2, in its fully expanded state, has a third height h3 that is less than the first height h1 and less than the second height h2. The lower third height h3 in the fully expanded state of the sealing tape 2 is achieved at least partially by permanent compression and / or fusion of the material of the base body 4.

[0101] The base surface of the base body 4 has a profile with a lower depression 28, which is oriented towards the top 6 of the sealing strip 2 and is opposite the depression 16 on the top 6 in the area of ​​the third height h 3.

[0102] The in Fig. 1 The sealing tape 2 shown also has a continuous barrier structure 18 to reduce water vapor diffusion and / or air permeability in the functional direction F of the sealing tape, which extends from the top 6 to the bottom 8 and at least partially through the area of ​​the third height h 3.

[0103] In other embodiments, the height h1 can also be different from the height h2, as long as both heights h1, h2 are greater than the height h3.

[0104] In the Fig. 1 In the illustrated embodiment, the barrier structure 18 comprises several subsections that together form the continuous barrier structure 18. First, the sealing tape has a barrier layer 20 on its upper surface 6. This barrier layer 20 extends from the first to the second side flank 10 and completely covers the base body 4 of the sealing tape. Preferably, the barrier layer 20 is bonded to or laminated onto the base body 4. The barrier layer 20 on the upper surface 6 of the sealing tape 2 comprises or is formed from a closed-cell foam. Preferably, at least the flat sections of the barrier layer 20 on the upper surface 6 in the region of the side flanks 10, which are intended to abut the wall, comprise a closed-cell foam.

[0105] Likewise, the sealing tape 2 has a further barrier layer 22 in the area of ​​the underside of the base body 4, which also extends from the first to the second side flank 10 and preferably covers the entire base body 4. The barrier layer 22 is preferably permanently bonded to or laminated to the base body 4. The barrier layers 20, 22 thus form symmetrically shaped boundaries of the base body 4 on its upper and lower sides, respectively.

[0106] A third component of the barrier structure 18 is the permanently compressed and / or fused section 24 of the sealing tape in the area of ​​the depression 16. In this area, the barrier layer 20 arranged on the upper surface 6, the barrier layer 22 arranged on the lower surface 8, and the material of the base body 4 are jointly compressed and / or fused, thereby achieving the lower third height h 3 of the sealing tape. Due to the compression and / or fusion of the different layers in this area, a sealing connection is established between the upper barrier layer 20 and the lower barrier layer 22.

[0107] Compression and / or fusion in this area can be achieved, for example, by bonding after compression, by sewing, by lamination with simultaneous compression, or by melting (with or without compression). In any case, the higher compression and / or the higher material density in the compressed / fused area ensures that the airtightness of the sealing tape or the water vapor diffusion resistance in the functional direction F is significantly increased in this section 24. The material of the base body 4 can be so highly compressed or fused with the materials of the barrier layers 20, 22 that it is no longer visually distinguishable from the barrier layers 20, 22.

[0108] The continuous barrier structure 18, formed from upper barrier layer 20, compressed / fused section 24 and lower barrier layer 22, thus extends (apart from the adhesive layer 12) over the entire height of the sealing tape and thus ensures a gapless seal against air penetration and / or water vapor diffusion in the functional direction F, adjusted to a desired dimension over the entire height.

[0109] In this embodiment, the barrier structure 18 extends on the upper surface 6 of the sealing strip 2 from the first and second side flanks 10 to the area between the first and second side flanks 10, runs there from the upper surface 6 towards the lower surface 8 of the sealing strip 2 and then extends along the lower surface of the base body 4 from the area between the first and second side flanks 10 to the first and second side flanks 10.

[0110] In this way, a sealing tape 2 with a continuous barrier structure 18 can be easily produced without having to laboriously insert a plurality of its components into incisions in the sealing tape.

[0111] In the illustrated embodiment, it is also conceivable not to design the adhesive layer 12 continuously over the entire width of the sealing tape 2, but only to provide it in strip form in the areas where it is to be bonded to the other elements of the sealing tape.

[0112] In Fig. 2 Is the sealing tape 2 made of Fig. 1 The sealing tape 2 is shown in a configuration wound onto a sealing tape roll 26. In this configuration, the sealing tape 2 is in a (partially) compressed state, in which the top surface 6 and the bottom surface 8 of the sealing tape are essentially straight, and the depression 16 is significantly less pronounced than in the fully expanded state. The configuration as a sealing tape roll 26 is also preferred for all other embodiments of the sealing tape according to the invention, and the same relationship applies.

[0113] The in Fig. 3 The sealing tape shown (2) differs from the sealing tape made of Fig. 1 in that the adhesive layer 12 adheres completely to the lower barrier layer 22 and thus has a profile with a hill shape that corresponds to the profile of the bottom surface of the base body 4 with the lower depression 28.

[0114] In the Fig. 3 In the illustrated embodiment, only the upper barrier layer 20, the base body 4, and the lower barrier layer 22 are compressed or fused together in the area of ​​the compressed / fused section 24, while the adhesive layer 12 is subsequently applied to the sealing tape 2 as a separate strip. It is also conceivable that the adhesive layer 12 becomes part of the compressed / fused section 24 and is also compressed and / or fused with the other components of the sealing tape 2 present in this area. In this case, the compression / fusion only takes place after the adhesive layer 12 has been applied.

[0115] The adhesive layer 12 can contribute additionally to the barrier structure 18. It is also conceivable that in the embodiment according to Fig. 3 The lower barrier layer 22 is omitted, and the adhesive layer 12 takes over the function of the lower barrier layer. It must then be ensured that the adhesive layer 12 has properties that reduce air penetration or water vapor diffusion to the desired extent. In this case, the barrier structure 18 would be formed by the upper barrier layer 20, the compressed / fused section 24, and the adhesive layer 12.

[0116] Also in the embodiment according to Fig. 3 The barrier structure 18 extends on the top surface 6 of the sealing strip 2 from the first and second side flanks 10 to the area between the first and second side flanks 10, runs there from the top surface 6 towards the bottom surface 8 of the sealing strip 2 and then extends along the bottom surface of the base body 4 from the area between the first and second side flanks 10 to the first and second side flanks 10.

[0117] The in Fig. 4 The illustrated sealing tape 2 differs from the embodiment shown in Fig. 1 The upper barrier layer 20 extends only from one side flank 10 to the compressed / fused section 24, and the lower barrier layer 22 also extends only from the compressed / fused section 24 to one side flank 10, preferably to the opposite side flank 10 of the sealing tape than the upper barrier layer 20. This configuration is sufficient to form a continuous barrier structure 18, which consists of the upper barrier layer 20, the compressed / fused section 24, and the lower barrier layer 22. In this embodiment, at least the upper barrier layer 20 comprises a closed-cell foam for contact with a wall.

[0118] In general terms, in the illustrated embodiment, the barrier structure 18 extends on the upper surface 6 from the (left) second side flank 10 to the area between the first and second side flanks 10, runs from the upper surface 6 towards the underside 8 of the sealing strip 2, and then extends along the underside of the at least one base body 4 from the area between the first and second side flanks 10 to the (right) first side flank 10. Of course, the barrier structure 18 can also extend in a corresponding manner on the upper surface 6 from the first side flank 10 and along the underside of the at least one base body 4 to the second side flank 10.

[0119] Alternatively, the barrier structure 18 extends on the top surface 6 from the first side flank 10 to the area between the first and the second side flank 10, runs there from the top surface 6 towards the bottom surface 8 of the sealing strip and then extends along the bottom surface of the at least one base body 4 from the area between the first and the second side flank 10 to the first side flank 10.

[0120] Because these components cover the entire height of the sealing tape 2 across its cross-section, a reduction in air permeability or water vapor diffusion in the functional direction F of the sealing tape, adjustable to a desired level, is ensured.

[0121] It is also possible that only one of the two barrier layers 20, 22 extends between a side flank 10 and the section 24, and the other of the two barrier layers 20, 22 extends completely between both side flanks 10.

[0122] The in Fig. 5 The illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment shown in Fig. 1 in that two compressed / fused sections 24 are provided across the width of the sealing strip 2. Between these sections 24, a substantially oval cross-sectional area of ​​the base body 4 is arranged, which is preferably surrounded on the top and bottom by the barrier layers 20, 22.

[0123] It is also possible to provide more than two compressed / fused sections 24 across the width of the sealing strip. Likewise, in all embodiments, it is conceivable to arrange the compressed / fused section(s) 24 asymmetrically across the width of the sealing strip.

[0124] The locking structure 18 is in the embodiment according to Fig. 5 formed by the upper barrier layer 20, the lower barrier layer 22 (which can optionally be replaced by the adhesive layer 12) and the section 24. Alternatively, the barrier structure 18 can also be formed analogously to a sealing tape 2 shaped in this way. Fig. 4 only consisting of sections of barrier layers 20, 22.

[0125] The in Fig. 6 The illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment shown in Fig. 5 in that a base surface of the base body 4 is essentially flat and fully bonded to the adhesive layer 12. Furthermore, the shape of the depressions 16 can be essentially V-shaped, and the compressed / fused sections 24 are not located in a central region of the sealing tape with respect to its height, but rather in a lower region of the sealing tape. Such modifications of the depression 16 or the compressed / fused section 24 are also conceivable in all other embodiments described above. Likewise, the shape of the depressions 16 can also be modified in the embodiment according to Fig. 6 the shape in the other embodiments, e.g. according to Fig. 1 and 3 bis 5 , are equivalent to.

[0126] Furthermore, in the illustrated example, the lower barrier layer 22 is omitted; however, it could also be included in the embodiment of the Fig. 6 can be added. Alternatively, the adhesive layer 12 takes over its function.

[0127] The in Fig. 7 The illustrated embodiment of the sealing tape 2 according to the invention comprises two base bodies 4 made of soft foam that is resilient after compression, which are preferably impregnated for delayed recovery and are arranged next to each other when viewed in the functional direction F of the sealing tape 2.

[0128] The sealing tape 2 has a top surface 6, a bottom surface 8, and two side flanks 10 connecting the top surface 6 and the bottom surface 8. The side flanks 10 extend essentially perpendicular to a functional direction F of the sealing tape 2, in which the sealing tape 2, in its later installed state, is intended to seal a joint against air penetration and / or water vapor diffusion.

[0129] In the area of ​​the underside 8, an adhesive layer 12 is arranged, which in the illustrated example runs flat and serves to adhere to a component 14 (see Fig. 12, 13 ), for example, a frame profile of a window or door. The adhesive layer 12 is preferably designed as a double-sided adhesive tape and is bonded to the adjacent areas of the sealing tape on its upper surface. The adhesive surface of the adhesive layer 12, which serves for attachment to the component 14, is directed downwards, i.e., away from the other components of the sealing tape 2, and is usually covered by a release film or paper that can be removed before use. In the illustrated example, it is also conceivable that the adhesive layer 12 is only adhesive on its upper surface in the areas where it comes into contact with areas of the sealing tape.

[0130] The upper surface 6 of the sealing tape 2 has a profile with a depression 16 in a central region of the sealing tape 2. The interior of the depression 16 is filled exclusively with air. In the region of the first (right) side flank 10, the sealing tape 2, in its fully expanded state, has a first height h 1, which corresponds to the height h 2 of the second (left) side flank 10. At the apex of the depression 16, however, the sealing tape 2, in its fully expanded state, has a third height h 3, which is less than the first height h 1 and less than the second height h 2.

[0131] The area with the third height h3 is formed in a transition area 36 between the two base bodies 4. In the illustrated example, the two base bodies 4 are each created by bending a rectangular cross-section shape, whereby a first, upper leg 30 of the base body 4 is bent 180° relative to a second, lower leg 32 of the base body 4. The bending point is located in the transition area 36 to the respective other base body 4, and the foam material of the base body 4 is compressed in the area of ​​the bending point due to the bending.

[0132] The first and second legs 30, 32 can be joined to each other at their overlapping surfaces, preferably by gluing or laminating them together. This results in a substantially horizontal adhesive surface between the legs 30, 32.

[0133] Each of the two base bodies 4 has a covering 34 that surrounds it on the top, the bottom, and the side facing the other base body 4. Depending on the stiffness of this covering 34, it can additionally contribute to the compression of the base body 4 material in the area of ​​the bending point. The adhesive layer 12 is firmly bonded to the underside of both coverings 34.

[0134] It is preferred if the enclosing 34 forms a barrier structure 18 which fulfills the same requirements as the one previously described under Fig. 1 described barrier structure 18. Even more preferred is the covering 34 of at least one base body 4 made of closed-cell foam in order to enable the best possible fit to the wall in the area of ​​the top 6 of the sealing tape 2 in a simple manner.

[0135] Each covering 34 forms a continuous barrier structure 18 which, viewed across the width of the sealing tape 2, covers the entire height of the sealing tape 2 and can thus reduce the air permeability or water vapor transmission in the functional direction F of the sealing tape to the desired extent. The barrier structure 18 therefore extends along the top surface 6 from at least one of the first and second side faces 10, through the transition area 36, ​​and along the underside of the same base body back to the same point formed by the first and second side faces 10.

[0136] The two adjacent base bodies 4 are permanently bonded to one another in the transition area 36, ​​in this case via the interposition of the respective sections of the coatings 34, e.g. by means of an adhesive layer 37. The coatings 34 of the two base bodies 4 can also be directly fused to one another. Such an adhesive layer 37 or bonding of the coatings 34 can also contribute to the barrier structure 18.

[0137] As a result, a substantially V-shaped depression 16 is formed in the area of ​​the upper surface 6 of the sealing strip, and likewise, another substantially V-shaped depression 28 opposite the depression 16 is formed in the area of ​​the lower third height h 3 in the area of ​​the lower third height 8 of the sealing strip.

[0138] The in Fig. 8 The illustrated sealing tape 2 differs from the embodiment shown in Fig. 7 in that only one of the basic bodies 4 is one of the two basic bodies 4 made of Fig. 7 The other basic body 4 is also a basic body 4 made of soft foam, but with a rectangular cross-section. The cross-section can also have a different geometric shape.

[0139] The continuous barrier structure 18 is in this case formed solely by the enclosing 34 of the first basic body 4. In the transition region 36, the two basic bodies 4 merely abut each other, but they can also be interlocked, as shown in the following. Fig. 7 is described.

[0140] The height of the two base bodies 4 is preferably identical, but can also differ, e.g., if the height h1 is to be equal to the height h2 despite the covering 34 of one of the two base bodies 4. In the transition area 36, ​​a lower third height h3 is preferably provided than in the area of ​​each of the two side flanks 10 of the sealing strip 2. The arrangement of the two base bodies 4 with respect to the functional direction F can be Fig. 8 It could also be the other way around. Likewise, it is conceivable that on the side of the free side flank of the rectangular base body 4, another base body 4 with enclosure 34 is preferably a mirror image of the one shown in Fig. 8 is arranged in the basic body 4 already shown.

[0141] The embodiment of the sealing tape 2 according to Fig. 9 differs from the embodiment Fig. 7 The key feature is that the two base bodies 4 each consist of a rectangular cross-section and are not bent. The compression of the two base bodies 4 near the transition region 36 is thus achieved solely by the adhesion of the two coverings 34 in the transition region 36 and the stiffness of the coverings 34. For the formation of the depression 16 and, if applicable, the depression 28, it is essential that the adhesive surface 37 between the coverings 34 has a lower height than the first and second heights h1 and h2, respectively, on the side flanks 10 of the sealing tape. Due to the stiffness of the covering 34, each base body 4 is then compressed more strongly near the transition region 36 compared to its full expansion in the region of the side flanks 10. In this embodiment as well, the barrier structure 18 is formed by at least one covering 34, optionally additionally by the adhesive layer 37.

[0142] It is also possible to create one like in Fig. 9 to combine the designed base body 4 with a conventional base body 4 with a rectangular cross-section without an enclosure 34.

[0143] The embodiment of the sealing tape 2 according to Fig. 10 differs from the embodiment Fig. 8 in that the two basic bodies 4 each consist of a rectangular cross-section and are not bent. One basic body 4 (the left one in Fig. 10 ) essentially corresponds to one of the two basic shapes 4 according to Fig. 9 and has a covering 34 that at least partially forms the barrier structure 18. The other basic body 4 (the right one in Fig. 10 ) essentially corresponds to the rectangular cross-section cut of soft foam according to Fig. 8 , but can also have a different geometric shape. The two basic bodies 4 can be permanently bonded to each other in the transition area 36, ​​for example by an adhesive layer 37. However, the two basic bodies 4 can also be connected to each other only by means of the adhesive layer 12 in the area of ​​their respective undersides.

[0144] Unlike Fig. 9 The covering 34, or rather its attachment to the other base body 4, does not cause any significant compression of the base body 4 in or near the transition area 36. Accordingly, no significant depressions 16, 28 are formed on the top or bottom of the sealing tape 2. This ensures that the sealing tape 2, in its installed state, rests against a component 14 and the wall 40 across its entire width, as fully as possible. The contact pressure of the sealing tape 2 against the wall is then essentially constant across the width of the sealing tape 2.

[0145] To increase the sealing effect of the sealing tape 2, this embodiment can also include any compression of at least the encased base body 4, as described for the other embodiments, e.g. by means of the covering 34.

[0146] The in Fig. 11 The illustrated sealing tape 2 comprises two essentially rectangular base bodies 4 made of soft foam. The barrier structure 18 is designed in this case as a continuous, preferably one-piece, barrier layer 23, which extends along the top surface 6 of the sealing tape 2, from the top surface 6 towards the bottom surface 8 of the sealing tape 2, and along the bottom surface of at least one of the two base bodies 4. Here, the barrier structure 18, or the barrier layer 23, extends from the (left) second side flank 10 along the top surface 6 of the sealing tape 2, in the transition region 36 along the facing side surfaces of the base bodies 4 towards the bottom surface 8 of the sealing tape 2, and finally along the bottom surface of one base body 4 towards the (right) first side flank 10. Of course, the barrier structure 18 can also extend along the top surface 6 from the first side flank 10 and along the bottom surface towards the second side flank 10.

[0147] The continuous barrier layer 23 can be formed partly by a barrier layer 20 on the top side 6 of the sealing tape 2 and partly by a barrier layer 22 on the underside of at least one base body 4, as described with reference to Fig. 1 and 3 bis 5 are described. The barrier layers 20, 22 can either extend only from one of the two side flanks 10 to the transition area 36 or can extend over the entire width of the sealing strip 2.

[0148] In the transition area 36, ​​a further barrier layer section 25 is provided, which connects the two barrier layers 20, 22. The barrier layer section 25 preferably runs substantially parallel to the side flanks 10 along the facing side surfaces of the base bodies 4 and can be connected to at least one of the two base bodies 4, preferably to both base bodies 4.

[0149] The barrier section 25 can be formed integrally with the barrier layers 20, 22 and preferably from the same material. However, the barrier layer section 25 can also be formed from a different material, such as a film, an adhesive layer, or by melting the foam of one of the two base bodies 4 onto the corresponding side surface. The barrier layers 20, 22 and the barrier layer section 25 should then be sealed together.

[0150] In general, the continuous barrier layer 23 and the barrier layer section 25 can have the same properties and materials as described herein for the barrier layers 20, 22 and the covering 34. At least the upper barrier layer 20 comprises a closed-cell foam.

[0151] The two base bodies 4 can be connected to each other by means of the barrier layer section 25, e.g., by gluing or laminating them together. Alternatively, the base bodies 4 can simply hold the barrier layer section 25 loosely between them and be firmly connected to each other by means of the adhesive layer 12. The adhesive layer 12 can also take over the function of the lower barrier layer 22, which can then be omitted.

[0152] In the embodiments according to Fig. 7 bis 11 More than two basic bodies 4 can also be arranged next to each other and connected accordingly.

[0153] Numerous combinations and modifications of the individual embodiments are possible. All such combinations are hereby disclosed, provided they fall within the scope of the attached claims.

[0154] In Fig. 12 This is an installation situation of the sealing tape 2 made of Fig. 1 As shown, in a building section 42, the sealing tape 2 is arranged in a joint 38 between a component 14, in particular a frame profile of a window or door, and a wall 40 in a partially compressed installation state and seals the joint 38. The upper surface 6 of the sealing tape 2 rests against the wall 40. In the area of ​​the upper surface 6, the sealing tape 2 comprises a barrier structure 18, in this embodiment the upper barrier layer 20, which rests against the wall 40 at least partially. Because the barrier structure 18 in the area of ​​the upper surface of the sealing tape 2 has a closed-cell foam or is formed from one, the best possible adaptation of the upper surface of the sealing tape 2 to the rough surface of the wall is ensured.

[0155] As indicated by the dashed lines, the top surface 6 of the sealing tape 2 rests against the wall 40 in the area of ​​the side flanks 10 of the sealing tape, while the top surface 6 does not rest against the wall 40, at least in the area of ​​the original third height h 3 and in adjacent areas (between the dashed lines). However, it is also conceivable that the third height h 3 is significantly larger and that the top surface 6 of the sealing tape 2 therefore also rests against the wall 40 in the area of ​​the original third height h 3, but then with a lower contact pressure than in the area of ​​the side flanks 10 of the sealing tape.

[0156] In Fig. 13 This is a suitable installation situation for the sealing tape 2. Fig. 9 shown. In this case, the sealing tape 2 in the building section 42 is compressed so strongly between component 14 and wall 40 that the top surface 6 also rests against the wall 40 in the area of ​​the original third height h 3 as well as in adjacent areas (between the dashed lines), but there with a lower contact pressure than in the area of ​​the side flanks 10 of the sealing tape.

[0157] Are the basic shapes 4 of the in Fig. 13 However, the sealing tape 2 shown, like the encased base body 4, is... Fig. 10 formed or, instead of the sealing tape 2 shown, the sealing tape 2 is used according to Fig. 10When used, the top surface 6 of the sealing tape rests against the wall 40 essentially across the entire width of the sealing tape 2. The contact pressure of the sealing tape 2 against the wall is then essentially constant across the entire width. A deviation may occur in the transition area 36, ​​but is negligible due to the small dimensions of an adhesive layer 36 or similar bonding agents.

Claims

1. A sealing tape (2) comprising at least one base body (4) made of soft foam which is resilient after compression, wherein the sealing tape has an upper side (6), a lower side (8) and a first and a second side flank (10) connecting the upper side (6) and lower side (8), wherein the side flanks (10) extend substantially perpendicular to a functional direction (F) of the sealing tape (2), wherein an adhesive layer (12) for adhesion to a component (14), in particular a frame profile of a window or a door, is arranged in the region of the lower side (8), wherein the sealing tape (2) has a continuous barrier structure (18) for reducing water vapour diffusion permeability and / or air permeability in the functional direction (F), wherein the barrier structure (18) extends from the upper side (6) to the lower side of the at least one base body (4), and wherein the barrier structure (18) also extends over a region of the upper side (6) of the sealing tape (2) and at least there comprises closed-cell soft foam or is formed therefrom, wherein the barrier structure (18) extends on the upper side (6) of the sealing tape (2) over the entire width of the sealing tape (2), and wherein a width of the sealing tape (2) is between 10 and 500 mm, the width being defined as the distance between the side flanks (10) of the sealing tape (2) in a direction parallel to the functional direction (F), wherein the barrier structure (18) has a thickness between 10 µm and 5 mm at least in the region of the upper side (6) of the sealing tape (2), wherein the barrier structure (18) extends along the upper side (6) to a region between the first and the second side flank (10) and extends there from the upper side (6) towards the lower side of the at least one base body (4).

2. The sealing tape (2) according to claim 1, characterized in that the barrier structure (18) further extends along the lower side of the at least one base body (4); and the barrier structure (18) preferably extends along the lower side of the at least one base body (4) over at least 1 % of the width of the sealing tape (2), more preferably over at least 5 % of the width of the sealing tape (2), and even more preferably over the entire width of the sealing tape (2).

3. The sealing tape (2) according to any one of the preceding claims, characterized in that the closed-cell foam of the barrier structure (18) is formed from polyurethane, polyethylene, polyvinyl chloride, polyolefin or polypropylene and has a density between 15 and 200 kg / m3.

4. The sealing tape (2) according to any one of the preceding claims, characterized in that the closed-cell foam of the barrier structure (18) has a compressive strength between 2 kPa and 15 kPa, preferably between 2.1 kPa and 10 kPa, more preferably between 2.2 kPa and 5 kPa, based on a compression of 40 % relative to the initial height (CV40) according to DIN EN ISO 3386:2015.

5. The sealing tape (2) according to any one of the preceding claims, characterized in that the closed-cell foam of the barrier structure (18) has an air permeability of at most 50 l / (m2s), preferably at most 40 l / (m2s), more preferably at most 30 l / (m2s), or even more preferably at most 20 l / (m2s), measured according to DIN EN ISO 9237:1995 with a test area of 100 cm2 and a measurement pressure (negative pressure) of 1.0 mbar using a Frank 21443 testing device.

6. The sealing tape (2) according to any one of the preceding claims, characterized in that the barrier structure (18) has, in the region of the upper side (6) of the sealing tape (2), a thickness between 15 µm and 3 mm, preferably between 50 µm and 2 mm.

7. The sealing tape (2) according to one of the preceding claims, characterized in that the upper side (6) of the sealing tape (2) has a profile with at least one depression (16), in such a manner that the sealing tape (2), in a fully expanded state, has a first height (h1) in the region of the first side flank (10), has a second height (h2) in the region of the second side flank (10), and has, in a region between the first and second side flank (10), a third height (h3) which is smaller than the first height (h1) and smaller than the second height (h2), and wherein an interior space of the depression (16) in the fully expanded state of the sealing tape (2) is filled exclusively with air, wherein the barrier structure (18) extends from the upper side (6) towards the lower side of the at least one base body (4), in such a manner that it extends through the region of the third height (h3).

8. The sealing tape (2) according to any one of the preceding claims, characterized in that the sealing tape (2) has at least two base bodies (4) which are arranged adjacent to one another in the functional direction (F) of the sealing tape (2), wherein the barrier structure (18) extends at least partially in a transition region (36) between the two adjacent base bodies (4) from the upper side (6) towards the lower side (8) of the sealing tape (2).

9. The sealing tape (2) according to claim 8, characterized in that the barrier structure (18) is configured as a continuous barrier layer (23) which extends on the upper side (6) of the sealing tape (2) along the upper side of at least one of the at least two base bodies (4), from the upper side (6) towards the lower side (8) of the sealing tape (2), and along the lower side of at least one of the at least two base bodies (4).

10. The sealing tape (2) according to claim 8, characterized in that at least one of the base bodies (4) has an enclosure (34) which surrounds the base body (4) on the upper side, the lower side and on a side facing an adjacent base body (4), wherein the enclosure (34) forms part of the barrier structure (18) or the entire barrier structure (18).

11. The sealing tape roll (26) comprising a sealing tape (2) according to any one of the preceding claims wound into a roll, wherein the sealing tape (2) is present in the sealing tape roll (26) in a compressed state in which the upper side (6) and the lower side (8) of the sealing tape (2) extend substantially linearly.