EP3825483A1 - Sealing tape - Google Patents

Abstract

The sealing tape (2) has two base bodies (4) made of soft foam that is resilient after compression, which are arranged next to one another in a functional direction (F) of the sealing tape. In the area of the underside (6) of the sealing tape, there is an adhesive layer (12) for adhering to a component (14), in particular a frame profile of a window or a door. The top (6) of the sealing tape has a profile with at least one depression (16) such that the sealing tape in a fully expanded state has a greater height in the area of the side flanks (10) than in a transition area (36) between the two base bodies (4). The sealing tape also has a continuous barrier structure (18) to reduce the water vapor diffusion permeability and / or air permeability in the functional direction (F) of the sealing tape, which runs from the top (6) to the bottom (8) and through the transition area (36).

Description

The present invention relates to a sealing tape with two base bodies made of soft foam that is resilient after compression.

Sealing tapes are generally used to seal joints between components, in particular frame profiles of windows or doors, and the building wall.

An example of such a sealing tape is, for example, from DE 10 2008 049 210 A1 known. The sealing tape described therein comprises two essentially rectangular base bodies which are connected by an adhesive layer in the area of mutually facing side surfaces. The two base bodies are formed from different, each open-pored foam strips and are designed in such a way that, in any case, in the installed state, a different vapor barrier effect results from a different initial density and / or different impregnation of the foam strips.

Out WO 2009/138311 A1 a sealing tape is known which, in one embodiment, in its fully expanded state, has a first height on its side flanks, while it has a second, lower height in a central region between the side flanks. Due to this configuration, in a partially compressed installation state, the sealing tape is more compressed on the side flanks than in the central area, whereby a higher pressure on the building wall is achieved on the side flanks than in the central area.

The present invention is based on the object of creating a sealing tape which is simple and inexpensive to manufacture, in the production of which little waste is generated, which provides a higher contact pressure against the building wall in the area of the side flanks than in an area between the side flanks and the improved , has well adjustable sealing properties.

This object is achieved by the features of claim 1.

According to the invention, the sealing tape comprises two base bodies made of soft foam which is resilient after compression and which are positioned next to one another in a functional direction of the sealing tape are arranged. The sealing band has an upper side, a lower side and a first and a second side flank which connect the upper side and the lower side, the side flanks extending essentially perpendicular to the functional direction of the sealing band. In the area of the underside, there is an adhesive layer for adhering to a component, in particular a frame profile of a window or a door. The top of the sealing tape has a profile with at least one depression such that the sealing tape has a first height in a fully expanded state in the area of the first side flank, has a second height in the area of the second side flank and in an area between the first and the second side flank has a third height which is less than the first and the second height. The area with the third height is formed in a transition area between the two base bodies. In addition, the sealing tape has a continuous blocking structure for reducing the water vapor diffusion permeability and / or air permeability in the functional direction, which runs from the top to the bottom and through the transition area.

The sealing tape formed in this way can be produced simply and inexpensively. By selecting suitable materials for the barrier structure, the sealing properties of the sealing tape with regard to the water vapor diffusion permeability and / or air permeability of the sealing tape can easily be adjusted in a targeted manner. In this way, the functionality of the sealing tape is expanded, with sensitive parts of the barrier structure being protected from damage by external influences during transport or handling.

An interior space of the depression is preferably filled exclusively with air in the fully expanded state of the sealing tape. The lower third height in the fully expanded state of the sealing tape is at least partially achieved, for example, by permanently compressing the foam of at least one of the two base bodies near the transition area to the other base body.

The interior of the depression is defined here as the space which is delimited by a section of the upper side of the sealing tape which is curved in the region of the depression and an imaginary extension of a flat section of the upper side of the sealing tape in the region of a side flank over the curved region.

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

The two base bodies are preferably designed as originally separate units which are adhered to one another exclusively via the adhesive layer on the underside and preferably also in the transition area by means of the blocking structure. This makes it possible to form the two base bodies from different foam materials and consequently to influence the sealing and insulating properties of the sealing tape in a simple manner. The two base bodies can, however, also be formed from the same foam.

In a preferred embodiment, the first and the second height are essentially the same. This results in an identical contact pressure of the sealing tape on the building wall on both side flanks.

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.

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

The depression preferably extends over a range from 2 to 60%, more preferably from 5 to 40% of the total width of the sealing tape.

In certain embodiments, the adhesive layer runs flat in the fully expanded state of the sealing tape. For this purpose, it can be expedient for the adhesive layer to adhere to the adjacent areas of the sealing tape on its upper side only in areas adjacent to the side flanks of the sealing tape. It is conceivable that the adhesive layer is only made sticky towards the top in the areas in which it comes into contact with areas of the sealing tape. The adhesive layer can, for example, be applied subsequently to the sealing tape as a separate strip.

In the fully expanded state of the sealing tape, a bottom surface of the base body can also have a profile with a lower depression, which is oriented in the direction of the upper side of the sealing tape and is opposite the depression on the upper side in the region of the third height.

In the fully expanded state of the sealing tape, the adhesive layer can then have a profile with a hill shape and essentially follow the shape of the lower depression. In the latter case, the adhesive layer is adhered essentially continuously along the underside of the sealing tape to adjoining areas of the sealing tape.

In all cases, the adhesive layer is preferably designed as a double-sided adhesive tape. In general, the adhesive surface of the adhesive layer that is used for attachment to the component is directed downwards and can be covered by a release liner or a release paper that can be removed before use.

In a preferred embodiment, at least one, preferably each of the two base bodies each has a casing which surrounds the respective base body on the upper side, the underside and the side facing the other base body. The compression of the one or the two base bodies is preferably achieved in each case using the casing.

It is preferred here if the envelope forms at least part of the barrier structure, preferably the entire barrier structure.

In preferred embodiments, the envelope can have essentially closed-cell flexible foam or be formed from this. In this way, due to the elasticity of the closed-cell soft foam, a sealing contact between the top of the sealing tape and the building wall is ensured. However, the envelope can also be formed from other suitable materials.

In addition or as an alternative to the sheathing, the compression can be favored by bending a first leg of at least one base body, preferably both base bodies, compared to a second leg of the respective base body by 180 °, the bending point being arranged in or near the transition area to the other base body is. The foam material of the respective base body is then preferably compressed in the area of the bending point due to the bending.

The first and second legs of the respective base body are preferably adhered to one another on their surfaces lying on top of one another, particularly preferably glued or laminated to one another.

It is preferred that the two adjacent base bodies are permanently adhered to one another in the transition area, e.g. by means of an adhesive layer. In this way, greater stability of the sealing tape is achieved. The height of such an adhesive layer in the transition area in the fully expanded state of the sealing tape is preferably 2 to 80%, more preferably 3 to 60%, particularly preferably 5 to 50% of the first height.

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

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

In all embodiments, the width of the sealing tape is preferably between 10 and 500 mm, more preferably between 10 and 150 mm. 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.

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 denotes the percentage height in the compressed state compared to the height in the fully expanded state.

In an installed state, the sealing tape is arranged in a building section. The structure section includes a wall and one inserted into an opening in the wall Component, wherein the sealing tape is arranged in a joint between the component and the wall and seals the joint. The side flanks of the sealing tape face an inside or outside of the room and the sealing tape is preferably connected to the component by means of the adhesive layer in the area of the underside of the sealing tape. Compared to the uncompressed or the completely expanded state of the sealing tape, the sealing tape is partially compressed in the installed state. In this partially compressed installation state, the top of the sealing tape rests on the wall in the area of the side flanks of the sealing tape, while the upper side of the sealing tape does not lie against the wall, at least in the area of the original third height, or rests on the wall with less pressure than in the area of the Side flanks of the sealing tape.

The degree of compression of the first and / or second side flank in the partially compressed installation state is preferably between 5 and 90%, more preferably between 10 and 70%, compared with the fully expanded state. The degree of compression here denotes the percentage height in the partially compressed state compared to the height in the fully expanded state.

The foam of the sealing tape can be formed from any desired open-cell or mixed-cell flexible foam, for example from polyurethane, polyethylene, polyvinyl chloride, polyolefin or polypropylene. The density of such flexible foams is between 15 and 200 kg / m ³ .

The foams described herein can also be designed in such a way that they have a skin on an outer surface. This applies both to the base body made of flexible foam and to the barrier structure, which in one embodiment can have a closed-cell foam or is formed from such. Such a skin is an integral part of the respective foam, but has increased 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 has the necessary flexibility to allow it to rest as closely as possible on a wall surface. A corresponding skin on at least one of the upper side, lower side or side flank of at least one base body can therefore optionally form part of the locking structure. The skin can already be created during the production of the respective foam. The However, skin can also only be formed during the application of further components, such as, for example, during the lamination of a closed-cell foam onto at least one base body. A skin can be produced particularly well with foams made of polyurethane.

The individual base bodies of the sealing tape are preferably made of the same material. Alternatively, the individual base bodies can be formed from different materials. Likewise, the base bodies can be designed identically or differently with regard to the properties of the base bodies described below.

The sealing tape preferably has exactly two base bodies. The sealing tape can, however, also comprise more than two base bodies arranged next to one another.

The two base bodies are preferably at least partially and preferably completely impregnated with an impregnating agent for delayed recovery. The impregnating agent preferably has an acrylate dispersion. In an advantageous embodiment, the acrylate dispersion has acrylate polymer particles dispersed in a homogeneous phase. The foam of the base body is particularly preferably impregnated with a weight fraction of acrylate dispersion for delayed recovery in such a way that the sealing tape resets in less than 24 hours at a degree of compression of the sealing tape of approx. 9% to 13% at 20 ° C and 50% relative humidity. until the joint is closed.

The air permeability of the flexible foam of the base body is preferably between 50 to 1,000 l / (m ² s), more preferably between 60 and 600 l / (m ² s) and particularly preferably between 80 and 400 l / (m ² s). All the information on air permeability given in the context of this application relates to a determination under the standard conditions of a 10 mm thick piece of foam (completely relaxed) at a measuring negative pressure of 1.0 bar, test area 100 cm ² ; Frank device 21443; DIN EN ISO 9237: 1995.

The flexible foam of the base body preferably has a compressive strength of more than 2 kPa. The compressive strength is preferably more than 2.1 kPa, more preferably more than 2.2 kPa, particularly preferably more than 2.3 kPa. The compressive strength is preferably less than 4 kPa, more preferably less than 3.8 kPa and more preferably less than 3.6 kPa.

The compressive strength is a measure of the strength of the foam. The values given here are based on a compression of 40% compared to the initial height. The compressive strength is determined in accordance with DIN EN ISO 3386: 2015, CV40 is specified.

Particularly preferably, each cover comprises an essentially closed-cell flexible foam or is formed exclusively from this. The closed-cell foam is preferably not impregnated. In the context of this application, closed-cell foam is understood to be a flexible foam that has an increased number of closed cells or cells with only a small opening cross-section. The closed-cell foam is characterized solely by its air permeability. The air permeability of a closed-cell foam in the context of this application is at most 50 l / (m ² s), or more preferably at most 40 l / (m ² s), or more preferably at most 30 l / (m ² s), or more preferably at a maximum of 20 l / (m ² s), measured according to DIN EN ISO 9237: 1995; Test area 100 cm ² at a measuring pressure (negative pressure) of 1.0 mbar, test device Frank 21443.

Each envelope described in the context of this application can also be formed from a film-like material or an adhesive, in particular from a film strip, an adhesive tape strip or an adhesive-like liquid medium. More specifically, each wrapper described herein can be formed from a film of polyamide, polyurethane, polypropylene, or copolymers thereof. Likewise, each cover can also be formed from a dispersion adhesive, in particular an acrylate adhesive or another suitable pressure-sensitive adhesive.

In all embodiments, each sheath can have a multilayer design, for example from any combination of several of the above-mentioned materials. For example, it can also have a membrane layer and / or a fleece layer. In particular, each cover can be designed as a multilayer composite layer. At least one layer of at least one further material can be arranged on one or both sides of the functional layer. The one or two further layers, which each partially or completely cover the functional layer, can protect and carry or support it and increase the stability of the cover. The individual layers can each consist of the same or different material.

The layers arranged on one or both sides can in particular be nonwovens, woven fabrics or grids made of inert materials such as polyethylene, polyurethane, polypropylene, polyester, glass fibers or viscose, optionally also perforated films, in particular those made of polyethylene, polyurethane, polypropylene or polyester. The layers can generally consist of any suitable material which is present in layer form and preferably does not have any higher sD values than the functional layer. The layers arranged on one or both sides can consist of a dispersion adhesive, in particular an acrylate adhesive.

If both base bodies have a casing, they can be formed from the same material or from different materials or have the same or different properties. Each envelope can also consist of different sections with different materials and / or properties.

All of the materials mentioned for the envelope can be applied to the soft foam of each base body in a particularly simple and easily controllable manner and connected to it. In addition, these materials are particularly suitable as barrier structure material, since their sealing properties can be adjusted in a targeted manner.

Each envelope has a thickness of 1 μm to 5 mm, preferably 10 μm to 3 mm, particularly preferably 50 μm to 2 mm.

Each envelope can generally form a continuous, non-porous and non-perforated layer within the scope of the invention. The air permeability of each envelope is preferably in the range of 0.01-50 l / (m ² s), more preferably in the range of 0.01-20 l / (m ² s). The air permeability is preferably 3-6 l / (m ² s) or preferably 1-2 l / (m ² s) or 0.2-0.5 l / (m ² s) or particularly preferably 0, 1-0.3 l / (m ² s) according to DIN EN ISO 9237: 1995; Test area 100 cm ² at a measuring pressure (negative pressure) of 1.0 mbar, test device Frank 21443, or is no longer measurable.

A characteristic of the water vapor diffusion resistance of a sealing tape is the water vapor diffusion value based on an air layer thickness in meters, the so-called sD value. Each envelope preferably 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 (rel. LF)). The sD value is checked in accordance with DIN EN ISO 12572: 2001. Independently of this or in combination with this, each casing can have an sD value of 0.02 m to 10 m or 0.03 m to 6 m or 0.05 m to 2 m at 72.5% rel. LF, according to DIN EN ISO 12572: 2001. For example, the sD value can be 25% rel. LF in the range from 1 to 10 m and at 72.5% rel. LF range from 0.1 to 5 m. Unless otherwise specified in DIN EN ISO 12572: 2001, the sD values refer to a temperature of 20 ° C.

Each cover can also be designed to vary in terms of humidity, i.e. its water vapor diffusion resistance changes depending on the humidity of the area surrounding the barrier layer.

The following relationships apply to each sealing tape according to the invention. Decisive for the air permeability of a sealing tape section is generally the total reduction of an air flow in one direction over 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 direction or in the functional direction of the sealing tape, the reduction in the air flow 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 / (m ² s), more preferably less than 40 l / (m ² s), more preferably less than 30 l / (m ² s), more preferably less than 20 l / (m ² s), more preferably less than 10 l / (m ² s), more preferably less than 5 l / (m ² s), under the measurement conditions given above.

In one embodiment, the sealing tape further comprises an additional material which is applied to a surface of at least one base body and / or on a casing and / or is contained in the impregnate of at least one base body. The additional material can give the sealing tape special properties. Materials for fire protection (e.g. expandable graphite, non-flammable solids, CO ₂ emitters, etc.), materials for insulation (e.g. PU foam, resins, sealants, etc.), materials for sealing against moisture (e.g. hydrophobic or hydrophilic) are used as additional materials Substances, substances that swell when in 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 to trigger the expansion of the sealing tape (e.g. propellants, heat sources, etc.) in question. The person skilled in the art can see alternatives here both with regard to the arrangement and the type and properties of the additional material which can be used to meet the respective requirements.

Fig. 1

ist eine schematische Querschnittsansicht einer ersten Ausführungsform eines erfindungsgemäßen Dichtbands in vollständig expandiertem Zustand;

Fig. 2

ist eine schematische Perspektivansicht des zu einer Dichtbandrolle aufgewickelten Dichtbands aus Fig. 1;

Fig. 3

ist eine schematische Querschnittsansicht einer zweiten Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 4

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand; und

Fig. 5

ist eine schematische Querschnittsansicht einer Einbausituation des Dichtbands aus Fig. 4, in der das Dichtband in einem teilkomprimierten Einbauzustand in einer Fuge zwischen einem Bauteil und einer Wand dichtend angeordnet ist.

Further features and advantages of the present invention emerge 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 the fully expanded state;

Fig. 2

FIG. 14 is a schematic perspective view of the sealing tape from FIG. 1 wound into a roll of sealing tape 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 a further embodiment of the sealing tape according to the invention in a fully expanded state; and

Fig. 5

FIG. 13 is a schematic cross-sectional view of an installation situation of the sealing tape from FIG Fig. 4 , in which the sealing tape is sealingly arranged in a partially compressed installation state in a joint between a component and a wall.

This in Fig. 1 Sealing tape 2 shown in cross section 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 one another when viewed in the functional direction F of the sealing tape 2.

The illustrated sealing tape 2 has a top 6, a bottom 8 and two side flanks 10 connecting the top 6 and bottom 8. The side flanks 10 extend essentially perpendicular to the functional direction F of the sealing tape, in which the sealing tape in the later installed state (see FIG Fig. 5 ) to seal a joint against air penetration and / or water vapor diffusion.

In the area of the underside 8, an adhesive layer 12 is arranged which, in the example shown, runs flat and for adhesion to a component 14 (see FIG Fig. 5 ), for example a frame profile of a window or a door. The adhesive layer 12 is preferably designed as a double-sided adhesive tape and adhered on its upper side to the adjacent areas of the sealing tape. The adhesive surface of the adhesive layer 12, which is used for attachment to the component 14, is directed downwards and is usually covered by a release film or a release paper that can be removed before use. In the example shown, it is also conceivable that the adhesive layer 12 is only made sticky towards the top in the areas in which it comes into contact with areas of the sealing tape.

The top 6 of the sealing tape 2 has a profile with a depression 16 in a central area between the side flanks 10 of the sealing tape 2. An interior of the depression 16 is filled exclusively with air. In the area of the depression 16, the top 6 of the sealing tape 2 is curved. In the area of the side flanks 10, the top 6 of the sealing tape is essentially flat. The interior of the depression 16 is defined as the space which is delimited by the curved section of the upper side 6 and an extension of the essentially flat section of the upper side 6 over the depression 16.

Due to the depression 16 that is only filled with air, this sealing tape 2 has the advantage over sealing tapes with a base body with a rectangular cross section that it has a higher thermal insulation due to the larger amount of air arranged in the central area of the sealing tape 2. This advantage is also provided by all of the other listed embodiments of the sealing tape with at least one depression 16 on the top 6 or bottom 8.

In the area of the first (right) side flank 10, the sealing tape has a first height h ₁ in the fully expanded state, 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 in the 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 . The area with the third height h ₃ is formed in a transition area 36 between the two base bodies 4. In other embodiments, the height h _{1 can} also be different from the height h ₂ as long as both heights h ₁ , h _{2 are} greater than the height h ₃ .

The lower third height h ₃ in the fully expanded state of the sealing tape is at least partially achieved by permanent compression of the foam of at least one of the two base bodies 4, here both base bodies 4.

In the example shown, the two base bodies 4 are each created by bending over a shaped body with a rectangular cross-section, a first, upper leg 30 of the base body 4 being bent over by 180 ° relative to a second, lower leg 32 of the base body 4. The bending point is arranged in the transition region 36 to the respective other base body 4 and the foam material of the base body 4 is compressed in itself in the region of the bending point due to the bending.

The first and second legs 30, 32 can be adhered to one another on their surfaces lying on top of one another, preferably glued or laminated to one another. This results in an essentially horizontally extending adhesive surface between the legs 30, 32.

Each of the two base bodies 4 preferably has a casing 34 which surrounds it on the upper side, the underside and on the side facing the other base body 4. Depending on the rigidity of this cover 34, the cover 34 can additionally contribute to the compression of the material of the base body 4 in the area of the bending point. The adhesive layer 12 is firmly adhered to both sheaths 34 on their underside. It is also possible for only one of the two base bodies 4 to have a corresponding casing 34. Each cover 34 is preferably permanently glued to the respective base body 4 or laminated to it.

When viewed together, the bottom surfaces of the two base bodies 4 have a profile. which forms a lower depression 28, which is oriented in the direction of the upper side 6 of the sealing tape and lies opposite the depression 16 on the upper side 6 _{in the area of the third height h 3 or in the transition area 36.}

This in Fig. 1 The sealing tape 2 shown also has a continuous blocking structure 18 for reducing the water vapor diffusion permeability and / or the air permeability in the functional direction F of the sealing tape 2, which extends from the top 6 to the bottom 8 and extends at least partially through the region of the third height h ₃ or through the transition region 36.

It is preferred if the casing 34 forms at least part of the barrier structure 18. Each envelope 34 forms a continuous barrier structure 18 which, viewed over the width of the sealing tape 2, extends over the entire height of the sealing tape 2 and can thus reduce the air permeability or the water vapor passage in the functional direction F of the sealing tape to the desired extent.

The two adjacent base bodies 4, in the present case with the interposition of the respective sections of the sheaths 34, are permanently adhered to one another in the transition area 36. For this purpose, an adhesive surface 37 for connecting the two base bodies 4 is provided in the transition area 36, for example. In addition to the sheaths 34, the adhesive surface 37 can also contribute to the blocking structure 18.

The higher compression of the foam in the area of the depressions 16, 28 also ensures that the airtightness of the sealing tape and the water vapor diffusion resistance in the functional direction F are significantly increased in this area. The material of the base body 4 can be so strongly compressed or fused with the materials of the sheaths 34 that it can no longer be visually differentiated from the sheaths 34.

As a result, a substantially V-shaped depression 16 is formed in the area of the upper side 6 of the sealing band, and a further essentially V-shaped depression 28 opposite the depression 16 is also formed in the area of the lower side 8 of the sealing band in the area of the lower third height h ₃ formed.

In the embodiment shown, it is also conceivable not to design the adhesive layer 12 continuously over the entire width of the sealing tape 2, but merely to provide it in strips in the areas in which it is to be adhered to the other elements of the sealing tape.

In one embodiment, the adhesive layer 12 can also adhere completely to the wrappings 34 in the area of the underside 8 of the sealing tape 2 and thus a profile with a Have hill shape, which corresponds to the profile of the bottom surface of the base body 4 with the lower depression 28 substantially.

It is also conceivable that the adhesive layer 12 contributes to the barrier structure 18. In this case, it must be ensured that the adhesive layer 12 has properties which reduce the passage of air or the water vapor diffusion to the desired extent.

In Fig. 2 the sealing tape 2 is off Fig. 1 shown in a configuration wound into a roll of sealing tape 26. The sealing tape is in a compressed state in which the upper side 6 and the lower side 8 of the sealing tape run essentially in a straight line or the depression 16 is significantly less pronounced than in the fully expanded state. The sealing tape 2 is wound up to form the sealing tape roll 26 in such a way that the underside 8 of the sealing tape 2 of one turn rests against the upper side 6 of the sealing tape 2 of an adjacent turn and the side flanks 10 of the sealing tape 2 form end faces of the sealing tape roll 26. For all further embodiments of the sealing tape according to the invention, the configuration as a sealing tape roll 26 is also preferred and the same relationship applies.

In the Fig. 3 The illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment Fig. 1 in that only one of the base bodies 4 is one of the two base bodies 4 Fig. 1 corresponds to. The other base body 4 is also a base body 4 made of flexible foam, but with a blank that is rectangular in cross section. The blank can also have a different geometric shape.

In this case, the continuous blocking structure 18 is only formed by the casing 34 of the first base body 4. In the transition area 36, the two base bodies 4 only lie against one another, but they can also be adhered to one another, as in the exemplary embodiment below Fig. 1 shown.

The height of the two base bodies 4 is preferably identical, but can also differ as long as there is a lower third height h ₃ in the transition region 36 than in the region of each of the two side flanks 10 of the sealing tape. The arrangement of the two base bodies 4 with regard to the functional direction F can be seen in FIG Fig. 3 also be the other way around.

The embodiment of the sealing tape 2 according to Fig. 4 differs from the embodiment Fig. 1 in that the two base bodies 4 each consist of a blank with a rectangular cross-section and are not bent over. The compression of the two base bodies 4 near the transition area 36 is thus brought about exclusively by the adhesion of the two sheaths 34 in the transition area 36 and the rigidity of the sheaths 34. To form the depression 16 and possibly the depression 28, it is therefore essential that the adhesive surface 37 between the wrappings 34 has a lower height than the first or second height h ₁ , h ₂ on the side flanks 10 of the sealing tape. Due to the rigidity of the casing 34, each base body 4 near the transition area 36 is then compressed more strongly compared to its complete expansion in the area of the side flanks 10.

It is also possible to use one like in Fig. 4 configured base body 4 to be combined with a conventional base body 4, which is rectangular in cross section, without casing 34.

In the embodiments according to Fig. 1 , FIGS. 3 and 4 In each case, more than two base bodies 4 can also be arranged correspondingly next to one another and connected to one another.

There are many ways of combining or modifying the individual embodiments. All such combinations are hereby intended to be disclosed, insofar as they come within the scope of the appended claims.

In Fig. 5 is an installation situation of the sealing tape 2 from Fig. 1 shown. Here, in a structural 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 a door, and a wall 40 in a partially compressed installation state and seals the joint 38. In this case, the sealing tape 2 in the structural section 42 is so strongly compressed between component 14 and wall 40 that the upper side 6 also _{rests against the wall 40 in the area of the original third height h 3} and in adjacent areas (between the dashed lines), there, however, with a lower contact pressure than in the area of the side flanks 10 of the sealing tape. However, it is also conceivable that the upper side 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 upper side 6 _{does not, at least in the area of the original third height h 3} and in adjacent areas (between the dashed lines) against the wall 40.

Claims (15)

Sealing tape (2), which has two base bodies (4) made of soft foam that is resilient after compression, which are arranged next to one another in a functional direction (F) of the sealing tape,
wherein the sealing tape has a top (6), a bottom (8) and a first and a second side flank (10) which connect the top (6) and bottom (8), wherein the side flanks (10) are substantially perpendicular to the functional direction (F) of the sealing tape (2) extend,
an adhesive layer (12) for adhering to a component (14), in particular a frame profile of a window or door, being arranged in the area of the underside (6),
wherein the top (6) of the sealing tape (2) has a profile with at least one depression (16) such that the sealing tape (2) has a first height (h ₁ ) in a fully expanded state in the area of the first side flank (10) , in the area of the second side flank (10) has a second height (h ₂ ) and in an area between the first and second side flank (10) has a third height (h ₃ ) which is less than the first height (h ₁ ) and is less than the second height (h ₂ ), the area with the third height (h ₃ ) being formed in a transition area (36) between the two base bodies (4),
wherein the sealing tape (2) has a continuous barrier structure (18) for reducing the water vapor diffusion permeability and / or air permeability in the functional direction (F), which runs from the top (6) to the bottom (8) and through the transition area (36). Sealing tape (2) according to claim 1, characterized in that the two base bodies (4) are designed as originally separate units, which are exclusively via the adhesive layer (12) on the underside (6) and preferably also in the transition area (36) by means of the blocking structure (18) are arrested together. Sealing tape (2) according to one of the preceding claims, characterized in that the first and the second height (h ₁ , h ₂ ) are essentially the same. Sealing tape (2) according to one of the preceding claims, characterized in that the third height (h ₃ ) is between 2 and 95%, preferably between 3 and 80%, more preferably between 5 and 50% of the first height (h ₁ ). Sealing tape (2) according to one of the preceding claims, characterized in that the area of the third height (h ₃ ) is arranged essentially centrally between the two side flanks (10). Sealing tape (2) according to one of the preceding claims, characterized in that the depression (16) extends over a range of 2 to 60%, preferably 5 to 40%, of the entire width of the sealing tape (2). Sealing tape (2) according to one of the preceding claims, characterized in that the adhesive layer (12) runs flat in the fully expanded state of the sealing tape (2). Sealing tape (2) according to one of the preceding claims, characterized in that at least one, preferably each of the two base bodies (4) each has a sheath (34) that covers the respective base body (4) on the top, the bottom and the other Surrounds the base body (4) facing the side. Sealing tape (2) according to claim 8, characterized in that the casing (34) forms at least part of the barrier structure (18) or the entire barrier structure (18). Sealing tape (2) according to claim 8 or 9, characterized in that the casing (34) has closed-cell soft foam or is formed from this. Sealing tape (2) according to one of the preceding claims, characterized in that a first leg (30) of at least one, preferably both, base body (4) is bent over by 180 ° with respect to a second leg (32) of the respective base body (4), the bending point being arranged near the transition region (36) to the other base body (4). Sealing tape (2) according to claim 11, characterized in that the foam material of the respective base body (4) is compressed in the area of the bending point due to the bending. Sealing tape (2) according to claim 11 or 12, characterized in that the first and second legs (30, 32) of the respective base body (4) are adhered to one another on their surfaces lying on top of one another, preferably glued or laminated to one another. Sealing tape roll (26) with a sealing tape (2) wound into a roll according to one of the preceding claims, wherein the sealing tape (2) is present in the sealing tape roll (26) in a compressed state in which the top (6) and the bottom (8 ) of the sealing band (2) run essentially in a straight line or the depression (16) is significantly less pronounced than in the fully expanded state. Structural section (42) with a wall (40) and a component (14) inserted into an opening in the wall (40), with a sealing tape (2) in a joint (38) between component (14) and wall (40) one of claims 1 to 13 is arranged in a partially compressed installation state and the joint (38) seals, wherein in the partially compressed installation state the top (6) of the sealing tape (2) in the area of the side flanks (10) of the sealing tape (2) on the wall (40) rests, while the top (6) of the sealing tape (2) at least in the area of the third height (h ₃ ) does not rest against the wall (40) or rests against the wall (40) with a lower contact pressure than in the area of the Side flanks (10) of the sealing tape (2).

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