WO2013034540A1

WO2013034540A1 - Laminar sealing tape

Info

Publication number: WO2013034540A1
Application number: PCT/EP2012/067194
Authority: WO
Inventors: Jakub VRSTALA
Original assignee: Tremco Illbruck Produktion Gmbh
Priority date: 2011-09-06
Filing date: 2012-09-04
Publication date: 2013-03-14
Also published as: DE202011105371U1; EP2753767B1; EP2753767A1

Abstract

The invention relates to a laminar sealing tape for sealing the region of a wall structure, for example, for covering the transition region of a support structure and an adjacent region of the wall structure, more particularly a facade, wherein the sealing tape has two longitudinal edges and is provided with or can be provided with an adhesive, distributed sectionally in the longitudinal direction of the strip,said adhesive being capable of adhering the sealing tape to a component in the region of the wall structure, wherein the sealing tape has a first strip from an expandable and tear-resistant material (first material) that extends in the longitudinal direction of the tape. According to the invention, the sealing tape also has a second strip that extends in the longitudinal direction of the tape, wherein relative to the width of the tape, the first strip and the second strip are arranged adjacent at least sectionally. The first strip has a water vapour diffusion resistance, which is at least 10% higher than that of the second strip. The second strip has an Sd value of less than 20 m. The tensile strength and/or the elongation at break of the first strip are higher than that of the second strip.

Description

Flat-shaped sealing tape

The invention relates to a sheet-like sealing strip for sealing a wall construction area, for example, to cover the transition region of a frame component or masonry area and an adjacent region of the wall structure, wherein the sealing strip has two longitudinal edges and distributed in the band longitudinal direction provided with adhesive or providable by means of which the sealing strip can be adhered to a component, wherein the sealing strip has a first strip, which extends in the longitudinal direction of the strip, of a stretchable and tear-resistant material (first material).

Such sealing tapes are known, in particular, for sealing the wall in the region of a frame component, wherein adjacent to the frame component often a layer of insulating material k is arranged, for example a thermal insulation material such as a glass or mineral wool mat, foam mat or the like, and the transition region between frame member and insulation material or the area filled with the insulating material between the supporting structure and the outer wall surface is to be sealed. By means of the insulating material, a highly thermally insulated building area is provided, in particular in relation to the current thermal insulation requirements of buildings. The frame member may in this case a window or door frame or another part represent a frame construction. By the sealing strip, a seal against external environmental influences can be achieved, in particular a driving rain, airtightness and the like. Furthermore, this area of the waterproofing should be UV-resistant, as it may be exposed to sunlight until the completion of the respective building or even beyond. Furthermore, the sealing tape should be able to compensate for changes in position of the first and the second region of the building wall against each other, so that the sealing strip should consist of a stretchable and tear-resistant material. As a rule, the sealing strip here extends from an area outside the room, which can be arranged, for example, on the lining component or fixed thereto, to an area inside the room which, for example, can rest against an insulating layer of the wall structure. The sealing strip adjoins the interior of the room usually at such an insulating layer or extends over a portion of the same, usually at this fitting. In this area, the sealing strip should impair the diffusion of water vapor inside the room to the outside of the room as little as possible. Overall, the sealing tape should therefore meet a complex requirement profile, which is met only inadequately by previously known sealing bands. The invention has for its object to provide a sealing tape for sealing between areas of a building wall structure, which solves the above problems.

The object is achieved by a sheet-like sealing strip according to claim 1, which in addition to the first strip of a stretchable and tear-resistant material (first material) further comprises a strip extending in the longitudinal direction of the second strip, wherein with respect to the width of the strip, the first strip and the second strip at least in regions, or preferably over the largest part (preferably ^ 50-75% or in particular ^ 80-90%) of the length of the Sealing tape or more preferably over the entire length of the sealing strip are arranged side by side. In this case, the first strip has a water vapor diffusion resistance which is at least 20% higher than that of the second strip (in each case the second strip as reference value 100%). The second strip has a Sd value in the range of 0.01 m to 20 m. The first strip also preferably has a higher tensile strength and / or a higher elongation at break than the second strip.

This makes it possible that the first strip of the sealing strip is arranged made of a stretchable and tear-resistant material at the sealing region to which the sealing strip is subjected to increased tensile forces. This is necessary, for example, in the sealing of a building wall structure if the two areas of the wall structure sealed by the sealing strip undergo certain changes in position relative to one another, for example due to thermal fluctuations, shocks and vibrations or the like or the sealing strip is subjected to mechanical tensile stresses during or after its installation , On the other hand, by the second strip of the second material, the sealing strip in a longitudinal region a low, preferably preferably with the humidity changing water vapor diffusion resistance (WDD resistance), whereby the sealing strip is particularly adapted to be used in the area of a thermal barrier layer of a building wall structure or the like to be, for example, the thermal barrier coating or the insulating material over a portion of the same superimposed overlapping. As a result, the sealing tape can meet the requirements in terms of adjusting the water vapor diffusion resistance of the building insulation in a special way, especially in training with variable WDD resistance. The sealing strip according to the invention comprising a first and a second strip of said materials thus fulfills in a special way the complex profile of requirements with respect to the various ones Areas of a building seal, which can not be met by a single material in this way. For example, low water-diffusion resistance sealing tapes are known per se for sealing building areas, but such materials do not meet the requirements for high ductility and tear resistance, particularly for materials having humidity-altering WDD resistance. If such a conventional material is used, a second sealing element must be used for optimum sealing of the building area in order to meet the requirements for ductility, tear strength and usually also UV resistance in the wall construction area, which increases the assembly effort and also the error rate of the seal significantly increased. The sealing strip according to the invention thus fulfills a complex requirement profile and is also easy to assemble, wherein a high density in the transition region of the two strips is ensured due to the integration of the two strips of the sealing strip of first and second material. The planar sealing tape according to the invention is thus adapted in a special way to be adhered to one of the two wall building areas, to cover the transition area with an adjacent wall building area and optionally to extend over a part of the surface of the adjacent wall building area and cover it on the surface. The adjacent wall building area is preferably a thermal barrier coating. The sealing strip is in this case preferably fastened to the other wall building area, which may have a carrying function, for example a frame such as a window or door frame may be.

According to a particularly preferred embodiment, the second strip consists at least partially of a material or has this, which changes its Wasserdampfdiffusionswider- with the humidity (second material). This embodiment can be realized independently of the features of the sealing tape according to the characterizing part of claim 1 be. In particular, however, this preferred embodiment may also apply particularly preferably independently of one another in combination with one or more of the characterizing features of claim 1. Thus, preferably, the first strip to a water vapor diffusion resistance which is at least 20% higher than that of the second strip, so that a suffi ^¬ accordingly large difference in the WDD resistors is that reliably ensured a directional diffusion of water vapor to the water removal. Particularly preferably, the second strip has an Sd value in the range of 0.01 m to 20 m, so that it is sufficiently low and the WDD resistance and the targeted diffusion direction of the sealing tape is determined by the first strip. Particularly preferably, the first strip has a higher tensile strength and / or a higher elongation at break than the second strip. Reference should be made to the above.

Advantageous embodiments result from the Unteran ^¬ claims. The features of the invention may in each case apply generally with respect to the different embodiments of the sealing tape according to the invention.

The first and second strips preferably have the same length. The first and second strips preferably extend over the entire length of the sealing strip. The longitudinal edges of the first and second strips each extend preferably parallel to one another and parallel to the longitudinal extent of the sealing strip. This can in each case apply independently of one another generally within the scope of the invention.

Preferably, the first and the second strips of the first and second material are arranged directly next to each other. As a result, additional strips of possibly further materials are dispensable, which leads to further transition or connecting regions between the individual strips with the risk of material mismatches and increasing connection would lead to errors. Optionally, however, in order to meet certain requirement profiles, at least one further strip of material may be provided between the first strip and the second strip from a material and / or layer thickness different from the first and second materials.

The first and second strips each have a connection region which extends in the longitudinal direction of the first and second strips, either in the form of an immediate connection region between the two strips or in the form of a transition region, for example in the form of at least one strip of a third Material. Preferably, the first and second strips extend laterally from opposite sides of the connecting area thereof, without overlapping outside the connecting area with the respective other strip (first and second strips), more preferably without being joined to another strip of the sealing strip ( z, the third strip). The overlap-free region of the first and / or second strip preferably extends in each case over the entire length of the sealing strip without overlapping with respect to the other of the first and second strips or particularly preferably without overlapping with respect to any other strip of the sealing strip. Optionally, the overlap-free region can each extend over only a portion of the length of the sealing strip, preferably over ^ 50 to 75% or ^ 80 to 90% of the length thereof.

Particularly preferably, the first and the second strips are directly attached to one another, for example by material bonding by a suitable adhesive or adhesive layer or by welding, preferably by contact welding, wherein preferably the first material is selected to be adhered to the second material while increasing the temperature thereof to be welded. Generally, the first and second strips may be overlapped with each other wherein the overlap region extends over part or preferably the entire length of one or both of the strips. The arrangement of a further additional strip with connection of the first and second strip is hereby unnecessary. Due to the overlapping arrangement, a permanent connection is achieved between the first and the second strip, which can also absorb high tensile forces under the stresses of the first strip, and secondly additional additional strips are avoided, which also reduce the thickness of the sealing strip in the connecting region of the first and second strips second strip would increase. In addition, this creates a sharp transition of the properties of both the first strip and the second strip, namely with respect to elongation at break and tensile strength on the one hand and WDD iderstand on the other hand, so that it is ensured that not unfavorable values of each parameter apply in an intermediate region. As a result, the sealing tape is particularly well adapted to building situations that change greatly in a small space. The first strip preferably has a tensile strength in the range of 2-30 N / mm ² or 3 to 20 N / mm ² , more preferably in the range of 4 to 15 N / mm ² or 4.5 to 8 N / mm ² . The first strip may independently or in combination herewith have an elongation at break in the range of 50 to 1000%, preferably 100 to 750% or 200 to 500%. The elongation at break may optionally independently of this be 50-100%, preferably 50-200%, the elongation at break may be 750-1000% or, if appropriate, moreover, in particular 500-650% or <350-450%. It has been found that, as a result, a sufficiently strain-relieving connection of the second strip to the respective component can surprisingly ensue, so that the tensile forces are absorbed to a sufficient extent by the first strip. As a result, a sufficient load capacity but also tear strength of the first strip is given, so that the second strip is substantially decoupled from mechanical stresses and in terms of Water vapor permeability can be optimized.

The second strip may have a tensile strength of> 0.25 to 0.50 N / mm ² , preferably> 0.75 to 1 N / mm ² , which has proved to be particularly advantageous for many applications, optionally also 2 to 3 N. / mm ² . The tensile strength of the second strip may be 12 to 15 N / mm ² or 7,5 7.5 to 10 N / mm ² , for example ^, 4 to 6 N / mm ² , which has been found to be preferred in many cases, as a result first strip can be designed to substantially absorb the tensile forces and mechanical loads. The tensile strength of the second strip may in particular be in the range of 0.25 to 18 N / mm 2 or in the range of 0.25 to 10 N / mm 2. The tensile strength and elongation at break are determined in the context of the invention according to DIN 7864-1.

Preferably, the first strip has a higher tensile strength and / or a higher elongation at break than the second strip, at the given material thickness of the strip. Preferably, the tensile strength of the first strip (at its given material thickness) is about 10-20%, or preferably 35-50%, or more preferably 100-200% higher than that of the second strip. The tensile strength of the first strip may be 6 to 8 times or even 10 to 15 times or 20 times the second strip. In particular, the tensile strength of the first strip may be between 20% and 20 times higher than that of the second strip, for example between 50% and the factor 5 or the factor 10 or higher.

Regardless of, or more preferably in combination with, preferably, the breaking elongation of the first strip is greater than the breaking elongation of the second strip by 35-50%, or more preferably 100-200% or 300-300%. The elongation at break of the first strip can be bis 20 to 25 times or ^ 12 to 15 times that of the second strip. In particular, the elongation at break of the first strip may be between 35% and 25 times that of the second strip, for example between 50% and a factor of 15 higher than this. In this way, tensile forces or expansion forces can be absorbed by the first strip in a particular manner, for example due to changes in position of the two building wall regions sealed by the sealing strip, for example due to vibrations, thermal expansion of the building wall areas or the like. There is also a sufficient decoupling of the building wall areas of the second strip, which has a lower tensile strength. The first strip may consist predominantly (at 50-75% or preferably 85-95% by weight or completely) of a polyolefin or a rubber material or a combination of these two materials. In particular, the first strip may be predominantly (at 50-75% or preferably 85-95% by weight or complete) of at least one of EPDM (ethylene-propylene-diene rubber), APTK (ethyl - en-propylene terpolymer rubber), FPM (fluoro rubber), FKM (fluorocarbon rubber), styrene-butadiene rubber (SBR), halogenated rubber, CR (polychloroprene rubber), AU (polyether Urethane rubber), EU (olyether urethane rubber) or butyl rubber or mixtures thereof. The blends may be blends of these materials containing two or more of them side by side, or copolymers thereof, for example in the form of block polymers or random polymers. Particularly advantageously, the first strip consists of EPDM or has a continuous layer of EPDM. The 0 and / or N content of the polymeric material, which volatilizes when pyrolysed with oxygen in excess at 500 ° C, is independently of each other preferably ^ 10% or ί 2-5 wt .-% or <0.5-1 Wt .-%, particularly preferably ^ 0.1-0.2 wt .-%, based on the residue of ignition of the polymeric material at 1000 ° C). The polymeric material of the first strip preferably has no hydrophilic functional groups, ie no 0- and / or N-containing groups, not on the side groups and / or not in the polymer backbone.

Particularly preferably, the first strip consists of a non-porous material or has no components or layers of porous material. This preferably applies to the regions of elongation at break and / or tensile strength or material layers thereof. Preferably, the porosity (pore volume) of the elongation at break and / or tensile strength determining regions or material layers of the first strip is 10-20% by volume or <3-7% by volume or <0.5-1% by volume thereof , As a result, a high elongation at break and / or tensile strength as well as a comparatively high DD resistance can be obtained, which are determined by the intrinsic material properties of the material.

The first strip may have a thickness of 0,0 0.025-0.05 mm or 0,1 0.1-0.2 mm, preferably 0,3 0.3-0.5 mm or optionally 1- 1-1.5 mm. As a result, the strip has a sufficient strength even at high loads, in particular a sufficiently high tensile strength. The thickness of the first strip may be 2,5 2.5-3 mm, or preferably ί 1.5-2 mm, more preferably 1 1 mm, thereby avoiding too high a weight of the material and possibly too high a rigidity of the first strip. The thickness of the first strip may thus be in the range of 0.025 to 3 mm in particular. The first and / or the second strip are preferably at least substantially impermeable to air. The first strip may have an air permeability of 2-5 l / m ² s or preferably 0.5-1 l / m ² s or 0.1-0.25 l / m ² s or more preferably 0.01 -0.05 l / m ² s according to DIN EN ISO 9237 at a measuring pressure (low pressure) of 1 mbar (measuring surface 100 cm ² ). The air permeability measurement can be generally within the scope of the invention each with an air permeability meter from the company. Frank, Type 21443 done. Irrespective of this, the second strip may have an air permeability of 2-5 l / m ² s or preferably 0.5-1 l / m ² s or 0.1-0.25 l / m ² s or more preferably <0 , 01-0.05 l / m ² s according to DIN EN ISO 9237 at a measuring pressure (negative pressure) of 1 mbar (measuring surface 100 cm ² ) have (in particular separately for the layer of the material with moisture-dependent water vapor diffusion resistance, in particular the ionomer film) apply). The first and / or second strips may each comprise at least one continuous material layer, preferably of uniform thickness, or may be present in their entirety as such, which determines the air impermeability of the respective strip. With respect to the first strip and / or the second strip, the air-impermeable continuous layer is preferably the layer which at least substantially co-determines the tensile strength and / or stretchability of the strip (ie, this layer per se is 50-75% or preferably 85) -90% of the tensile strength and / or the elongation at break of the strip material in total). This layer of the respective strip may have the air permeability stated at the beginning of this section.

The second strip preferably has an s _D value in the range of 0.01 m-20 m or 0.1 m-20 m, preferably 0.2-0.5 m or 1-2 m, the s _D value can be generally ^ 15-20 or ^ 5-10 m, each at 25% relative humidity according to DIN 52615. In particular, the s _D value in the range of 0.5 m - 20 m or 1 - 10 m are , Regardless of or in combination with this, the second strip may have an s _D value of 0.02 m - 4 m or 0.05 m - 2 m at 72.5% relative humidity according to DIN 52615. Unless determined according to DIN 52615, nothing else s _D relate - erte generally in the context of the invention to a temperature of 20 ° C.

Particularly preferably, the second strip has a in Depending on the humidity changing WDD resistance. For this purpose, the second strip may have a layer, preferably with respect to the strip extension, of a full-surface layer of such a material. The material layer of this material can be continuous. Optionally, the second strip can also be made of a material that does not change its WDD resistance depending on the humidity.

The s _D value (water vapor diffusion value in relation to an air layer thickness in meters) of the second strip at 25% relative humidity on the one hand and at 72.5% relative humidity on the other hand (in each case at 20 ° C.) preferably differs in each case by a factor of > 1.1-1.2, preferably ^ 1.5-2, optionally up to a factor of 3 to 5 or to 10 or to 20 or beyond, whereby the dependence of the water vapor diffusion of the second strip is defined by the humidity, for example, by a factor in the range of 1.1 to 20. This can be for each of the values at 25% or at 72.5% rel. Humidity independently or in combination with each other apply. The difference of both s _D values of the second strip at the two indicated relative humidities may be 0.25 m or 0.5 m or preferably 0.75-1 m. In the case of different ambient conditions, for example in summer or winter or in different climatic zones, this results in a sufficient dependency of the water vapor diffusion resistance in order to achieve a sufficient adaptation of the water vapor diffusion resistance to the ambient conditions even if the relative humidity of the environment is different.

The first strip is preferably made of a material (including composite material or composite material) having a higher water vapor transmission resistance than the material of the second strip (for a given layer thickness of the strips), for example based on 20 ° C and a relative humidity of 50%. It is understood that also the second strip may have a composite material or a composite material. The water vapor diffusion resistance of the first strip at 20 ° C and 50% relative humidity by 10-20% or 50-100%, preferably by> 3-5 times or 10-20 times, more preferably 50-100 times the value of the second Be higher, so that the covered with the first strip wall area more or substantially water vapor diffusion tight and, for example, the frame member can be protected by the sealing strip particularly effective and on the other hand, the covered with the second strip wall portion is relatively open water vapor permeable, so that water vapor in the area of the second strip, in particular, can diffuse away from inside to outside on the room side. It has proved in many cases to be sufficient if the water vapor diffusion resistance of the first strip under the conditions mentioned <10,000-50,000 times or <2,000-5,000 times, or even <500-1,000 times or <100-250 times SD value of the second strip is, for example, in the range of 10% to 50,000 or in the range of 20% to factor 2,000 or 5,000 or in the range of 50% to 500-1,000 each larger than the SD value of the second strip ,

Particularly preferably, the first strip consists of a material which has a lower dependence of the water vapor diffusion resistance of the humidity than the material of the second strip, for example based on 20 ° C and a range of humidity of 10-90% relative humidity or 20- 50% relative humidity, at the specified temperature. The dependence of the water vapor diffusion resistance on the humidity in the said humidity range at 20 ° C. may be <35-50% or <15-20%, in particular also 5-10% of the said dependence of the water vapor diffusion resistance on the humidity of the second strip. in each case the same conditions. In particular, the first strip can essentially no dependence of the water vapor diffusion resistance of the Have humidity.

The second strip preferably comprises an ionomer material as material whose water vapor diffusion resistance changes with the air humidity, optionally also a polyamide material or another suitable material, in the case of a design having a variable WDD resistance. The material which changes its moisture vapor diffusion resistance with the humidity, in particular the ionomer material, can be present in particular as a layer or film. The layer or film may be formed continuously over the surface extension thereof. The layer or foil may be present without openings, that is, be impermeable to air or air pressure.

An ionomer material which can be used according to the invention is known, for example, from DE 199 02 102 B4, DE 195 14 420 C1, EP 1 372 956 A1 or also US 2005/0284096 A1, the disclosure content of which is hereby included in its entirety. In particular, the second strip of the sealing strip may consist of a material, as described in one of the cited documents.

By "ionomer material" is meant a polymeric material in which the polymeric material has ionic groups, especially acrylate or methacrylate groups, each linked by chemical valence bonds to side chains or the backbone of the polymeric material to the polymer backbone are preferably selected from the group of ammonium, lithium, sodium, potassium, magnesium, calcium or zinc or mixtures thereof, more preferably sodium and / or potassium, most preferably sodium In particular, with respect to the definition of the term "ionomers "on Rompps Chemie-Lexikon, 9th edition, 1990, verwiesen according to which random thermoplastic copolymers of (i) a monoolefin, (ii) a monoolefinic unsaturated acid, (iii) if desired further comonomers for modifying the chemical and physical properties of these copolymers, and (iv) the acidic groups of these copolymers entirely or partially neutralized with inorganic cations. In extension of this definition, non-random copolymers are also included, for example block polymers of a monoolefin and a monoolefinic unsaturated acid whose acidic groups are neutralized in whole or in part with inorganic cations. It is understood that the term "a monoolefin" and "a monoolefinic saturated acid" are each independently of one another in the sense of "at least one" to understand and also mixtures and / or copolymers thereof.

Particularly preferably, the ionomers used in the invention comprise i) 50-99 mol% of ethylene and ii) 1-50 mol% of methacrylic acid, iv) the acidic groups of these copolymers being 0.5-100%, preferably 10 -70% are neutralized with counterions.

The ionomeric material used preferably has no amide and / or urethane groups, which is ecologically preferred, for example, disposal of the material by combustion, with respect to the UV resistance of the material and with respect to a higher adjustable dependence of the water vapor diffusion resistance of the Moisture, which is preferred for many applications with respect to the sealing of the wall construction area. More preferably, the ionomer material is free of nitrogen or contains nitrogen to i 7-10 wt% or ^ 3-5 wt .-% or preferably ^ 0.5-1 wt .-% or 0.1-0.25 wt .-% based on the case of combustion of the material under excess of oxygen at 300 ° C releasing components. If the second strip does not exhibit any moisture-modifying WDD resistance, it may consist of a material / material suitable for the other requirements, in particular as a plastic film (including a composite film) or as the WDD resistance of the WDD resistor Have strip defining material. The material may be, for example, a polyolefin film such as a PE or PP film or a polyester film or the like. In general, in the case of the material of the second strip, the water vapor diffusion resistance (s _D value according to DIN 52615) preferably decreases with increasing relative humidity, if this at least partially consists of a material that is WDD-variable with the humidity, such as a WDD-variable film.

The second strip may be multi-layered, in particular a multilayer composite layer. On one or both sides of a WDD resistance determining layer of the strip (WDD layer) such as ionomer or a layer with depending on the humidity changing Wasserdampfdiffusionskoeffi- zients (delta-s _D layer) can each at least one layer at least one be arranged further material. The one or both further layers, which partially or completely cover the WDD layer in each case, can protect and support this layer and increase the stability of the second strip, even when the layer is formed as a delta-s _D or ionomer Layer. The individual layers can each consist of the same or different material, in particular if they are arranged on both sides of the same to the WDD layer or ionomer or delta-s _D layer. The one or both further layers preferably each have an Sd value which is below the lowest s 1 value of the ionomer layer or delta-s _D layer. Optionally, further layers of water vapor permeable scaffolding and / or processing auxiliaries may be provided. The one or both sides of the layer such as WDD. Lonomer- or the delta SD layer disposed layers may in particular nonwovens, wovens or grid of inert substances such as polyethylene, polypropylene, polyester, glass fibers or viscose be gegebe ^¬ appropriate, also perforated films, in particular those of polyethylene, polypropylene or polyester. The layers may generally consist of any suitable material which is in layer form and preferably has no higher values than the ionomer layer,

The WDD layer, in particular ionomer layer or delta-s _D layer, in particular in each case in the form of a film, may have a thickness of 2 to 200 μ, preferably in the range of 5 to 100 μ or 5 to 50 μ, particularly preferably in the range from 5-30 μ.

Optionally, the ionomer or delta-s _D layer can also be in the form of a sheet-like impregnating material in which the amount of the ionomers or the material causing the Delta-s _D effect (delta-s _D material) is 1-500 g / m 2, preferably 2 -100 g / m2, for example 10-75 g / m2. The carrier material of the impregnating material may be a textile material such as a fleece or fabric or a porous material. The impregnation preferably forms a closed reacted film.

The ionomer material or delta-s _D material can be present as a blend (blend or copolymer) with other polymeric materials such as polyesters, polyamides, vinyl acetates, etc., as described for example in EP 1372956 AI. The proportion of the isomers in the blend can be 20-99.5% by weight, for example 25-95% by weight, or pure ionomer can be used as the layer material.

The WDD layer. In particular, ionomer or delta-s _D - _s layer, preferably forms a continuous, non-porous and non-perforated layer, particularly preferably one with a Air permeability of ^ 1-5 l / m ² s or ^ 0.1-0.5 l / m ² s at a reduced pressure of 1 mbar (according to DIN EN ISO 9237, measuring surface 100 cm ² ). The thickness of the layers surrounding the WDD layer can be a total of 10 to 1,500 μιπ, preferably 10 to 500 μηη, in particular 10-250 μπι, more preferably 10 to 90 pm each side independently. The total thickness of the second strip may be in the range of 0.1-3 mm or 0.2-2 mm, preferably 0.2-1 mm.

Preferably, the first strip has an s _D value of 10-2500 m, particularly preferably 20-1000 m or depending on the requirement of 20-500 m or of 40-1000 m. The values refer in each case to 25% relative humidity and 20 ° C, if according to DIN 52615 - which otherwise applies - nothing else results. Preferably, the water vapor diffusion resistance of the first strip under comparable conditions (in particular 25% and / or 72.5% relative humidity according to DIN 52615) is more than a factor of 2-3, preferably ^ 5-10, particularly preferably 15 -20 higher than the water vapor diffusion resistance of the second strip.

The sealing tape is partially distributed in the tape longitudinal direction provided with an adhesive or providable, preferably in the region of both longitudinal edges. Particularly preferably, the sealing tape is provided with an adhesive at least in the region of a longitudinal edge or both longitudinal edges. Preferably, the area provided with the adhesive or providable area extends over the entire length of the sealing strip, preferably in the longitudinal direction of the same throughout. "Foreseeable" includes that an adhesive is associated with the sealing tape to be applied thereto (eg in the form of a set) and / or a zone is provided on the sealing tape which is particularly adapted for applying the adhesive, for example a corresponding one Has surface and / or a limitation of a Haftraittelaufbringungszone, for example in the form of an optical and / or mechanical limitation of the zone, eg. In the form of a line. The adhesive to be applied may in particular be an adhesive paste, in particular solvent-based adhesive paste, such as, for example, a butyl adhesive, without being limited thereto.

Preferably, an adhesive layer (or an adhesive to be applied) is arranged (at least) on the first strip, by means of which the first strip can be fastened to the first wall of the building. The building wall area may in particular represent a frame profile, in particular a window or door frame, or a facade element, each preferably made of a metallic material. The adhesive layer of the first and / or second strip may each be covered by a protective film. Preferably, the second strip is also provided with an adhesive layer on the edge opposite the first strip. However, if necessary, the second strip does not have an adhesive layer (except, if necessary, the adhesive layer for attaching the second strip to the first strip) so that the second strip is positionally changeable and non-adherent to the region of the wall structure, such as an insulating layer, opposite thereto is.

Preferably, the respective adhesive layer is arranged in the region of one of the longitudinal edges of the sealing strip. As a result, overall, the sealing strip can be used simply and flexibly in the covering of the respective wall region.

If the first and second strips are arranged overlapping one another, the adhesive layer on the first strip may preferably be arranged on the side of the strip opposite the second strip. The sealing strip can be applied so flat to the building wall area to be sealed and is also manufacturing technology by attaching the other Layers / stripes on the submitted first strip easy to produce. If an adhesive layer is arranged on the second strip, then this can be arranged on the same side as the adhesive layer of the first strip or on the side of the second strip opposite thereto. On the first and / or second strip, the adhesive layer may in particular be applied on both sides (ie on the front and back of the sealing strip), preferably in plan view of the sealing strip - with respect to the respective strip - at the same height, ie one behind the other.

The width of the first strip may be ^ 5-10% or ^ 15-20% of the total width of the sealing strip. The width may be 80-90% or preferably ^ 66-75% or ί 40-50%, if appropriate also 20-50% thereof. The width may therefore be, for example, in the range of 5-90% or 15-75% of the width of the sealing strip. In this way, on the one hand, the second strip can have a sufficiently large width to allow sufficient diffusion of water vapor through the sealing strip, on the other hand, sufficient extensibility, elasticity and tightness (based on driving rain, airtightness and / or water vapor tightness) of the sealing strip at the Building wall to which the first strip is attached given. The specified width always refers to the width of the first strip, which is free of overlap with the second strip.

Preferably, the width of the second strip is greater than the width of the first strip. The width of the second strip can be 5-10% or 20-35% or preferably 55-60% or even 65-75% of the width of the sealing strip, optionally also 80% of the same. The width of the second strip may be 80 80-90%, or preferably ≦ 66-75%, or 40-50%, and optionally 20-30% thereof. The width may therefore be, for example, in the range of 5-90% or 15-75% of the width of the sealing strip. This can be a sealing strip with high, humidity-dependent water vapor permeability can be given, which nevertheless in combination herewith has a high elasticity and tear resistance due to the arrangement of the first strip. The specified width refers in each case to the width of the second strip, which is free of overlap with the first strip.

According to a preferred embodiment, the first strip and / or the second strip are each arranged on an edge region of the sealing strip, thus each independently form the edge region of the sealing strip.

According to a further preferred embodiment, the sealing strip next to the first and second strips may have a third strip, which consists of the first material, which thus has a high tensile strength and elasticity. The first, second and third strips extend in sealing strip longitudinal direction. As a result, with a certain wall construction, for example, the respective edge region of a joint can be sealed with a stretchable and tear-resistant material so that thermal or mechanical stresses, for example due to thermal expansion or vibrations, can be absorbed at the connection region of the sealing strip with the respective building region. On the other hand, a diffusion of water vapor through the sealing strip is made possible by the intermediate region of the sealing strip from the second strip, also as a function of the relative humidity of the environment. It is understood that the first and the third strip may be made of the same material or of another each tear-resistant and elastic material. The first and third strips may each be provided with an adhesive layer, which may each be covered with a peelable protective film. The adhesive layer may be arranged in each case on the laterally outer wall region of the first and third strips. The adhesive layers in the first and third strips may be attached thereto Be arranged side of the sealing strip or the same on opposite sides.

The sealing tape according to the invention is a lappig set sheet. Preferably, the first and second strips of the sealing strip are each set lobed fabrics. Any further strips of the sealing strip are preferably likewise lobed set fabrics. Due to the lobed setting, the sealing strip can in each case be simply adapted to the geometry of the corresponding frame component in its shape.

The height of the sealing tape is substantially smaller than its width, e.g. greater than or equal to the factor 10-20 or greater than or equal to the factor 50-100, so that the sealing tape is not applied strongly and, as described, can be sealingly fastened to the surfaces of the respective wall regions. The sealing strip can thereby cover a joint on the outside, the joint on both sides across, and next to the joint at the adjacent Bauwerksbereiche be set or fixable, in particular with the first strip on a building area and with the second strip on the other, on the opposite Joint side arranged building area. The quotient of width and height of the sealing tape may be <500-1,000 or <5,000-10,000, without being limited thereto. The sealing tape may for example have a height of ^ 3-5 mm or from ^ 1-2 mm, without being limited thereto. As a result, the sealing tape is also easy to fold in the longitudinal direction. The sealing band height can be> 0.1-0.2 mm or 0.3-0.5 mm, so that the sealing band is sufficiently stable, in particular traction-absorbing and / or tear-resistant, e.g. also ^ 1 mm.

The sealing strip as well as the first and the second strip each have a main extension plane, with a flat arrangement of the sealing strip. The main extension plane of the first and second strips {and possibly one or more strips) are parallel to each other and parallel to the main line. Expander level of the sealing strip arranged in a flat arrangement of the same. The main extension plane is in each case the plane with the largest surface extension of the respective strip or sealing strip.

Also included in the invention is a building with two wall building areas, for example a profile part or masonry area on the one hand and an adjacent area of the wall structure on the other hand, and with a sealing area between these sealing flat sealing strip, wherein the area to be sealed is sealed by means of a sealing strip according to the invention is. The profile part can be a frame component (eg a frame inserted into a masonry opening such as a window or door frame) or a trim part (eg a cladding part of the building exterior skin such as a facade panel, trim part of a window reveal, cladding part of an interior trim of a room such as a wall panel o. Like., Especially first or second mentioned) be. The profile part is generally preferably different from a masonry area. The transition region can be, for example, a structural joint or a joint area of adjacent building areas, in particular (i) masonry and thermal insulation layer or (ii) cladding part of the outer skin of the building or window revealing and thermal barrier coating In this case, the sealing strip according to the invention can be arranged to cover the transition region between the two wall construction regions and / or a surface region of at least one of the two wall construction regions in order to seal this wall construction region However, several sealing strips according to the invention can also be arranged on the same wall-mounted area, for example on the one hand the room outside and on the other hand the interior of the wall building area.

The first strip of the sealing strip made of the first material is preferably arranged on the outside of the space and the second strip of the sealing strip is arranged in relation to the first strip in the interior space. Starting from a wall structure with a room outside and a room inside, the first strip thus has a partial area, which preferably extends over the entire length of the first strip, which is arranged closer to the outside space than a portion of the second strip or as the second strip in total , Regardless of this, the transition region between the first and the second strip is preferably arranged on the inside of the space opposite the first strip or at least the edge region of the first strip facing away from the second strip, that is to say further towards the interior side than this first strip or the outside edge region of the first strip , As a result, strains or mechanical stresses of the sealing strip can be absorbed by the first strip. Furthermore, the first strip has a higher water and / or airtightness than the second strip and is preferably formed so that rain-tight, so that by the first strip even under the influence of external environmental influences such as sun, wind or rain through the sealing strip, a seal of Building structure is provided and on the other hand by the second, inside the room disposed strip of sealing strips nevertheless has a comparatively low water vapor transmission resistance, wherein at the same time the sealing strip can be handled as a unitary component, without having to connect the first with the second strip on site.

The terms "inside space" and "outside space" in the context of the invention are to be understood in the sense of "facing the interior" and "facing the exterior", unless otherwise stated in the context. The sealing strip is preferably arranged on a masonry area comprising a thermal insulation layer, wherein the second strip of the second material covers at least a part of its width a heat-insulating layer of the wall-building area.

On the other hand, in certain embodiments of the wall construction area, the first strip can also at least partially cover a heat-insulating layer on a load-bearing wall area such as a masonry area or wall area made of concrete and the second, more permeable to water vapor diffusion covering (ie immediately overlapping or adjoining) a heat-insulating layer and a portion of the same be arranged extending. The sealing tape may in turn be attached to the masonry area by means of the adhesive / adhesive layer of the first strip. If appropriate, the first strip may also be arranged on the inside of the room and the second strip on the outside of the room. Preferably, the first strip is also arranged on the outside of the room and the second strip on the inside. The first strip may be attached to the respective building part or part of a metal structure or another frame part outside the room. If the sealing strip according to the invention in installation position covers a first area with a first water vapor permeability permeability and the second strip covers a second area with a second water vapor permeability, the second strip can generally be projected over a larger area over the wall building area with higher water vapor permeability (eg the thermal barrier coating) than the first strip (eg in the area of masonry, frame component and the like).

On the one hand, the sealing strip preferably covers a subarea of a dimensionally stable wall building area, such as a masonry wall. factory area, frame member or cowling, preferably with the first strip, and with another portion at least partially an end face of a thermal barrier coating, for example, with the second strip. The partial area of the strip, preferably of the second strip, which covers the front side, is preferably drawn over a partial area of a side surface of the thermal barrier coating adjoining the front side. Preferably, the second strip is applied to the front side and the side surface of the thermal barrier coating.

In the context of the invention, the second strip preferably covers at least partially an end face of a thermal barrier coating, preferably directly adjacent to it. The first strip with an adhesive layer is preferably fastened to a mechanically stable wall construction area such as a supporting wall, a frame profile such as a frame (eg window or door frame) inserted in a masonry opening or a cladding component such as a facade panel or window covering. The sealing strip can in this case be arranged on the outside of the wall construction area. The second strip may be secured to a building area by means of another layer of adhesive, but preferably the second sealing strip does not have a separate adhesive layer (except the connecting area with the first strip). Both the first and second strips may be provided with adhesive, one-sided and two-way. Preferably, the second strip attached to the support structure is provided with adhesive. The first strip is often attached to the façade panel with solvent-borne SBR rubber on site. Optionally, the first strip of adhesive may be attached to a thermal barrier coating, the sealing tape is preferably arranged inside the room on the wall building area.

In general, the thermal barrier coating may consist of a thermal insulation material such as polystyrene (styrofoam), polyurethane foam, mineral wool, fiberglass or the like. The thermal barrier coating can be self-supporting. The insulating material may have a thermal conductivity X _R of ^ 0.15 W / mK, preferably ^¬ from 0.08 to 0.1 W / mK, particularly preferably from 0.05 to 0.06 W / mK, for example also in the range of 0.035 to 0.04 W / mK.

The formation of the first material from a rubber material has the further advantage that it can be provided in a simple manner superficially adhering with a sealant, wherein such, well adhering to rubber materials sealing compounds are known.

The invention will be explained below by way of example with reference to FIGS. Show it:

FIGS. 1-3 sealing strips according to the invention of different embodiments in cross section (FIGS. 1a, 2, 3) and in plan view (FIG. 1b), FIG. 4 shows a wall construction with sealing strip according to the invention of a first embodiment,

Figure 5 is a schematic representation of a wall section with inventive sealing strip of an alternative embodiment.

1 shows a sheet-like sealing strip 1 according to the invention for sealing a wall building area 100 (see FIG. 4), in particular a transition area between adjacent wall building areas, as detailed in FIGS. 4 and 5 according to particularly preferred exemplary embodiments. The sealing strip 1 has two longitudinal edges 2, 3 and is provided with a strip-shaped region 4 of an adhesive or adhesive extending in the strip longitudinal direction, for example a self-adhesive layer, by means of which the sealing strip 1 is attached to a component 110, 120 and / or a support structure 130 can be adhered or fastened (see Fig. 4). The sealing tape is set lappig and constructed in the manner of a composite film. The width of the sealing strip is hereby - which can generally be considered within the scope of the invention - greater than or equal to the factor 25 to 50 or greater than / equal to the factor 75 to 100 greater than its thickness.

The sealing strip has a strip in the longitudinal direction he stretching first strip 5 of a stretchable and tear-resistant material (first material), here from a chewing schukmaterial, in the special EPDM.

The band 1 further has a second strip 10, extending in the longitudinal direction of the band, of a material different from the material of the first strip. According to all embodiments, the second strip may each have a water vapor diffusion resistance (WDD resistance) according to a first variant, wherein the WDD resistance of the first strip is preferably at least 20% higher than that of the second strip (second strip: 100%). The second strip in combination therewith or independently thereof has a Sd value of less than 20 m, for example in the range of 0.01 m to 20 m. Furthermore, the first strip usually has a higher tensile strength and / or a higher elongation at break than the second strip. According to a second variant, the second strip has a reversibly changing with the humidity WDD resistance, ie, at least partially or completely of a material (second material) with the humidity reversibly changing WDD resistance, eg. In the form of a layer or Layer of such material. According to this variant, the first strip preferably has a vapor diffusion resistance which is at least 20% higher than that of the second strip. The second strip preferably has an Sd value of less than 20 m or in the range of 0.01 m to 20 m. Preferably, the first strip has a higher tensile strength and / or a higher elongation at break than the second strip. According to the embodiments of this second variant, these features are realized in combination, but they can also be realized independently of each other. The second variant can also be realized according to all embodiments. If reference is made to a variant in one exemplary embodiment, it is understood that in order to avoid repetition, the respective embodiments may also apply correspondingly to the other variant. With regard to the width B of the band, the first strip 5 and the second strip 10 are arranged next to each other at least in regions, here over the entire length of the sealing strip. The first and second strips both extend over the entire length of the sealing strip. The laterally outer side longitudinal edges 5a, 10a of the first and second strips each extend parallel to one another and parallel to the longitudinal extension of the sealing strip 1.

The first strip 5 of first material and the second strip 10 of second material are arranged directly next to each other. The first strip 5 and the second strip 10 are fastened directly to one another, here overlapping one another, and are adhered to one another in the overlapping region 7, here by welding or alternatively by an adhesive layer (not shown). The main extension planes of the first and second strips Hl, H2 are arranged parallel to each other and parallel to the main extension plane H of the sealing strip, in the flat arrangement of the same shown. The second material may according to the first variant consist of a suitable plastic film or a preferably continuous layer of such comprise, for example. From PE.

The second material according to the second variant comprises a continuous ionomer film (e.g., Surlyn 8150, Surlyn 8945, Himilan MK 154) or delta sD film, which is provided on both sides, for example, with a nonwoven layer for protection and stabilization of the ionomer film. The Ionomerbzw. Delta SD film forms a continuous, non-disruptive layer, which can generally also apply to the DD film of the first variant.

The first strip has a higher tensile strength and / or a higher elasticity (lower elastic modulus) than the second strip. For example, the tear strength of the first stripe is 5 times higher than that of the second stripe, and the elasticity of the first stripe is 10 times higher than that of the second stripe, for example. In particular, both can apply in combination. The first strip consists entirely of a material which in this case has essentially no dependence of the water vapor diffusion resistance on the atmospheric moisture, namely EPDM. The 0 and / or N content of the polymeric material of the first strip, here EPDM, which volatilizes when pyrolysis with oxygen in excess at 500 ° C, is ^ 0.1-0.2 wt .-% based on the ignition residue of the polymeric material at 1000 ° C.

The first strip has a thickness of 1 mm, the second strip has a thickness of 0.5 mm.

The first and second strips are at least substantially air impermeable. The first and second strips each independently have an air permeability of <1-3 l / m2s, more precisely <0.2-0.01 l / m2s according to DIN EN ISO 9237, at a measuring pressure (negative pressure) of 1 mbar. The second strip has an s _D value of 0.5 m at 25% relative humidity according to DIN 52615. In. Training according to the second variant with variable WDD resistance has according to the example of the second strip an s _D value of 0.5 m at 25% relative humidity according to DIN 52615 and a s _D - ert of 0.1 m at 72.5% relative humidity according to DIN 52615, each at 20 ° C. The water vapor diffusion resistance of the material thus increases with increasing humidity. The So value of the second stripe at 25% on the one hand and at 72.5% relative humidity on the other hand (each at 20 ° C) thus differs by about a factor of 5, the difference of both Sn values of the second stripe in the both specified relative humidities is about 0.4 m. The further layers of the composite material of the second strip each have an s _d value which is below the lowest s _d value of the delta sD or ionomer layer, in this case more than a factor of 10. The delta sD or ionomer layer has a thickness of about 20 μ.

The first strip is made of a material which has a higher water vapor diffusion resistance than the material of the second strip, based on 20 ° C and a relative humidity of 25%, more specifically, the first strip has an s _D value of about 50 or also For example, about 500 m in accordance with DIN 52615. The water vapor diffusion resistance of the first material at 20 ° C and 50% relative humidity is thus about 1000 times higher than the value of the second strip, so that the first strip is substantially water vapor diffusion tight , The first strip has essentially no dependence of the water vapor diffusion resistance on the humidity. The first and the second strips are waterproof to splash water, in particular impact-proof at ^ 300 Pa or ^ 600 Pa, according to DIN EN ISO 1027. Water droplets applied to the respective strip do not penetrate the strip material to the opposite side under the action of gravity. The first strip 5 is covered with an adhesive layer 4, preferably as a self-adhesive layer, with a covering film 4a which can be pulled off for use. The second strip is factory-provided with an adhesive layer 11, preferably as a self-adhesive layer with cover film IIa, with an adhesive layer. The adhesive layer of the first strip is arranged in the region of the laterally outer longitudinal edge 5a of the strip 5, independently of which the adhesive layer of the second strip is arranged in the region of the opposite outer longitudinal edge. As a result, the sealing tape can be used in a simple and flexible manner when covering the respective wall area. The adhesive layer 4 on the first strip is arranged on the side opposite the second strip (lower side 5d) (upper side 5c) of the strip, optionally also on the lower side. Generally within the scope of the invention, the first and / or the second strip can be factory-provided with an adhesive layer, on one side or on both sides. This adhesive layer may be, for example, a butyl rubber or a self-adhesive layer. If appropriate, the first strip may also be provided on the construction site with an adhesive, for example an adhesive paste, optionally also the second strip. The respective layers of adhesive serve to fasten the sealing strip to a building area of the building to be sealed. The width of the first strip is about 33% of the width of the tape 1, the width of the second strip about 66% of the width of the tape.

FIG. 2 shows a modification of the strip according to FIG. 1, with the remainder being made in full reference to the above, also with regard to the two variants mentioned. After Variation between the first and second strips 5, 10, a third strip 15 is provided of a material which is different from the material of the first and the second strip. The material of the third strip here has a high tensile strength, similar to that of the first strip, but an elasticity which lies between that of the first and the second strip. As a result, the material of the third strip can still adapt very well to the shape of the building structure, but elastic forces are absorbed mainly by the first strip. The first strip and the second strip are each arranged on an edge region of the sealing strip.

FIG. 3 shows a further modification of the strip according to FIG. 1, with the remainder being referred to in full above, also with regard to the two variants mentioned. After the modification, the second strip 10 is provided on both sides with a strip 5, 5 ^'of the first material, wherein the strips 5 and 5' of the same material or possibly also of different tear-resistant materials with respect to the second strip of high elasticity can exist. The strips 5 and 5 ^' may have the same or different widths. The adhesive layers 4, 4 'are each arranged on the laterally outside regions of the strips 5, 5 ^' and are each covered by covering films 4a, 4a '. The strips 5 and 5 ^' are respectively arranged on the same side of the second strip, but they may, if appropriate, be arranged on opposite sides thereof. Fig. 4 shows the application of a sealing strip according to the invention to a building, here by way of example sealing strips 200, 250, which are identical to the sealing strip of FIG. 1 (to the statements there is fully referenced), which apply accordingly also for other sealing strips according to the invention can. The building 100 has two adjoining wall building areas 101, 102. In an area 101 of the wall structure, an outer lining element 110, such as a facade panel (alternatively also a frame component), a supporting structure 130 (for example a support or a masonry) and a thermal barrier layer 120 arranged between them is arranged. The heat-absorbing layer abuts the cladding element in a front-side joint 103 (apart from the region of the sealing strip arranged therebetween). The thermal barrier coating is applied to a support structure 130, here this partially covering the area. The transition region 105 between the cladding element and the supporting structure, namely over the extension 121 of the thermal barrier coating between them, is covered by a sealing strip 200 and thus sealed, ie the end face 121 of the thermal barrier layer with adjacent side region 122 thereof, over which the sealing strip is drawn. Furthermore, the transition region 106 between the cladding element and the thermal barrier coating and the transition region 107 between the thermal barrier coating and the support structure are covered by the sealing tape and thus sealed.

In another area 102 of the wall structure, an inner lining profile or covering element 140 of a window reveal and a supporting structure 130 and a thermal barrier layer 120 arranged between them (which is identical here with the above-mentioned thermal barrier layer 120, but need not be) are arranged , The thermal barrier coating lies flat against the support structure 130 on the window reveal cover 140 (apart from the region of the sealing tape arranged between the latter), covering them in each case in a partially planar manner. The transition region 105 between cladding element 140 and support structure 130, namely over the extension 122 of the thermal barrier coating between them, is covered by a sealing strip 250 and thus sealed, ie the end face 123 of the thermal barrier coating with adjacent side region 124 thereof, over which the sealing tape is pulled around. Further will be the transition region 108 between the cladding element and the thermal barrier coating and the transition region 109 between the thermal barrier coating and masonry area covered by the sealing strip and thus sealed.

The wall structure here has a room outside 100a and a room inside 100b. The arrangement of a heat-insulating layer as a wall-building area in combination with the sealing strip according to the invention is particularly preferred; instead of this, it is also possible for other wall-building areas to be made of other materials. The thermal barrier coating 120 is permeable to water vapor diffusion, for example in the form of a vapor-permeable or open-celled material, such as e.g. Mineral wool or plastic foam, which can generally be considered in the context of the invention. Under cover of a surface region of the thermal insulation layer each new (end faces and / or side surfaces) through the sealing strip these areas are also sealed flat, for example. Against draft, water spray, driving rain or the like.

In the case of the sealing strip 200, 250, the first strip 200a, 250a of the first material is disposed in the space outside and the second strip 200b, 250b is arranged in relation to the first strip in the interior. The first strip 200a, 250a respectively has a portion 200a-l and 250a-l which extends over the entire length of the first strip, in each case arranged closer to the outer space side than the second strip of the respective sealing strip. The transition region 200c, 250c between the first and the second strip of the respective sealing strip 200, 250 is arranged on the inside of the space opposite the central region or the edge region of the first strip facing away from the second strip, that is to say further to the interior side than the middle region or the edge region of the first strip, which faces away from the second strip. The first strip of the respective sealing strip has a higher water and / or air density as the second strip of the same sealing tape.

The first strip is here adhered with the adhesive layer to the region of the wall structure. The first strip 200a, 250a of the sealing strips 200, 250 may each be fastened to a dimensionally stable wall region such as a cladding or frame element, possibly also to a wall region, for example the masonry region, by means of the corresponding adhesive layer 200m, 250n, for example each at the back of the same. The second strip 200b, 250b is preferably likewise fastened with an adhesive layer to this adjoining region of the wall-building region, and independently of this, can lie substantially flat against the heat-insulating layer. The second strip 200b, 250b of the respective sealing strip partially covers the wall area which is more permeable to water vapor diffusion, namely the heat-insulating layer and can rest against it. The second strip of the respective sealing strip can in this case each extend over a larger area or a larger area over the layer of wall building area (here the thermal barrier layer) that is more permeable to water vapor than via the less water vapor-permeable layer (the supporting structure or the covering part).

Particularly preferably, the second strip is arranged adjacent to or (directly) adjacent to a thermal barrier coating and covers these regions. The insulating layer may consist of a thermal insulation material such as polystyrene, polyurethane foam, mineral wool, fiberglass material, etc. The thermal barrier coating can be self-supporting. The insulating material has a thermal conductivity Ä _R of about 0.06 W / mK.

The sealing tape can be adapted to the thermal barrier coating such that the water vapor diffusion resistance (s _D value) of the second layer of the sealing tape is smaller than the s _D value the thermal barrier coating is.

FIG. 5 shows the application of the sealing strip according to the invention according to FIG. 3 to a building, wherein the laterally outer strips 5, 5 'on a supporting structure or masonry area 500 by means of the adhesive layers 4, 4' of the strips 5, 5 'of the first material are fixed and he middle portion of the sealing strip from the second strip 10 at the level of a water vapor diffusion open joint 510 is arranged. The 510 joint is sealed with a water vapor permeable joint sealant 520 such as a resilient foam strip.

The comments on the figures 4 and apply with respect to the two mentioned variants of the sealing strip according to the invention.

Claims

claims

A flat sealing strip for sealing a wall building area, for example for covering the transition area of a supporting structure and an adjacent area of the wall structure, in particular a facade, wherein the sealing strip has two longitudinal edges and partially distributed in tape longitudinal direction provided with an adhesive or is providable, by means of which the sealing strip on a Component of the wall building area is adhered, wherein the sealing strip has a extending in the tape longitudinal direction first strip of a stretchable and tear-resistant material (first material), there duri ge nes zei chn et, as ss the sealing strip further extending in the tape longitudinal direction second strip wherein, with respect to the width of the band, the first strip and the second strip are arranged next to each other at least in regions, and in that the first strip has a water vapor diffusion resistance, which belongs to the ndest 20% higher than that of the second strip, and that the second strip has a Sd value in the range of 0.01 m to 20 m.

Sheet-like sealing strip according to the preamble of claim 1 or claim 1, since you are keen - zeig hn et that the sealing tape further comprises a extending in the tape longitudinal direction second strip, wherein with respect to the width of the band, the first strip and the second strip at least partially adjacent to each other, and that the second strip is a water vapor diffusion resistance with the humidity reversible changing material (second material) or consists of such.

Sealing strip according to claim 1 or 2, characterized in that the first strip has a higher tensile strength and / or a higher elongation at break than the second strip.

Sealing strip according to one of claims 1 to 3, characterized in that the first strip consists of a material which has a lower dependence of the water vapor diffusion resistance on the humidity than the second strip or substantially no dependence of the water vapor diffusion resistance on the humidity ,

Sealing strip according to one of Claims 1 to 4, characterized in that the first strip predominantly consists of a polyolefin material or rubber material.

Sealing strip according to one of claims 1 to 5, characterized in that the second strip consists of a second material whose water vapor diffusion resistance decreases with increasing air humidity.

Sealing strip according to one of claims 1 to 6, characterized in that the second strip is at least partially made of an ionomer material, in particular an ionomer film.

8. The sealing tape according to any one of claims 1 to 7, ge ke nn zei et chn, characterized because the second strip ss a s _D - ert comprises from 0.1 m to 20 m.

9. Sealing strip according to one of claims 1 to 8, since you rc h characterized in that the first strip has an s _D value of 20 m to 1000 m, wherein the s _D value of the second strip is smaller than that of the first strip ,

10. Sealing strip according to one of claims 1 to 9, characterized in that ss the second strip has an s _D value which is at least 50% smaller than the s _D value of the first strip.

11. Sealing strip according to one of claims 1 to 10, characterized in that on the first strip and / or on the second strip an adhesive layer for fixing the sealing strip to a building area is arranged.

12. Sealing strip according to claim 11, characterized in that the first strip has a first and a second opposite surface, that the adhesive layer is arranged on the first surface and that the second strip on the second surface with the first strip is connected.

13. Sealing strip according to claim 12, characterized in that an adhesive layer of the second strip for fastening the sealing strip to a building area is arranged on the first surface of the first strip facing and / or facing strip surface. Sealing tape according to any one of claims 1 to 13, characterized in that the width of the first strip is less than the width of the second strip.

Sealing strip according to one of claims 1 to 14, since the first strip of first material and the second strip of second material are arranged directly next to one another.

Sealing strip according to one of claims 1 to 15, characterized in that the first strip and the second strip are fastened directly to one another.

Sealing tape according to any one of claims 1 to 16, characterized in that the sealing tape further comprises a third strip consisting of a stretchable and tear-resistant material, the first, second and third strips extending in the sealing strip longitudinal direction and the second strip is arranged between the first and the third strip.

Sealing tape according to claim 17, characterized in that the adhesive is arranged on the first strip and the third strip.

Sealing strip according to one of claims 1 to 18, characterized in that the first strip has a thickness in the range of 0.1 to 3 mm.

Building with two wall building areas, for example, a support structure on the one hand and an adjacent region of the wall structure on the other hand, and with a the transition region between these sealing surface Sealing tape, as shown in the drawing, in that the area to be sealed is sealed by means of a sealing tape according to one of claims 1 to 19.

Structure according to claim 20, characterized in that the sealing strip is arranged so as to cover the transition area between the two wall building areas and / or the transition or surface area on a surface area of at least one of the two wall building areas.

Structure according to claim 20 or 21, characterized in that the first strip of the sealing strip is arranged on the outside of the space and the second strip is arranged on the inside of the building in relation to the first strip.

Structure according to one of claims 20 to 22, characterized in that the first strip of the sealing strip is fastened with the adhesive to a profile part, preferably in the form of a frame inserted into a masonry opening, wall cladding or façade part, wherein the sealing strip is preferably arranged on the outside of the wall building area.

Building according to one of claims 20 to 23, characterized in that the first strip is fixed to a component made of metallic material.

Building according to one of claims 20 to 24, characterized in that the first strip of the sealing strip is fastened with the adhesive to a component of the wall building area covering a thermal barrier layer, wherein the sealing strip is preferably arranged on the inside of the wall building area. 26, building according to one of claims 20 to 25, since you rchge ke nn zei ch net, since the second strip of the sealing strip is arranged overlapping a portion of a Ärmedämmschicht.

27. Structure according to one of claims 20 to 26, characterized

characterized in that the second strip is fixed with the adhesive to the support structure.