EP2733271A1 - Forced ventilated building with wall structure containing sealing tape - Google Patents

Abstract

The building (1) has forced-ventilated area (3) inside which mechanical ventilation device (2) is equipped. An outer wall surface (4) of forced-ventilated area is provided with adjoining components (5a,5b) connected to ventilation device. A sealing band (RA) is adhered to outer wall surface of forced-ventilated area for providing water vapor diffusion resistance so that increased water tightness, UV-resistance, and reduced joint air permeability are provided to the building.

Description

The invention relates to a building with a forced ventilation device and at least one force-ventilated by means of this space and with a wall structure of forced-ventilated space comprising an outer wall with at least two adjacent components, in particular a Wandbeleibung providing component and at least one frame profile, wherein formed between the two components a joint is, and with at least one sealing strip, which is arranged to seal the gap in this between the two components, in particular between the frame profile and the wall reveal, the sealing strip comprises a body of compressible and preferably retarded resilient foam and two opposite broadsides, which can each be applied to a contact surface of the two components, wherein preferably a first of the broad sides is provided with a fastening means, by means of which the sealing tape on the corre sponding contact surface of the component can be fastened or adhered, and two opposite, extending transversely to the broad sides narrow sides, namely a directed to the room outside and a room inside the narrow side.

To seal a joint, a sealing strip is usually introduced in the compressed state in the joint, so that this fills the gap after its relaxation. This can happen the sealing tape in each case extend over only a part or the entire joint depth, ie, for example, form the outside or inside sealing of the joint, or both.

The sealing strip here on the one hand to form a Zugluftabdichtung the joint and on the other hand in space outside arrangement sufficient watertightness, e.g. a driving rain seal to ensure the joint. Furthermore, the jointing tape should also have sufficient UV resistance to have a sufficient joint tightness with respect to drafts and driving rain even with prolonged exposure to sunlight.

The currently planned renewal of the Energy Saving Ordinance (EnEV) introduces the aspect of targeted ventilation of buildings. Ventilation systems (forced ventilation) are provided in order to achieve a regulated and ensured ventilation of rooms, in particular with a person's stay such as living or office space. These suck from different rooms, such as those with usually higher humidity (bedroom) and / or odors (toilet, kitchen) targeted at the air. Outside air is supplied to the rooms via other rooms. The inflowing air is usually warmed by a heat exchanger with the extracted air. The sealing tapes on the one hand despite forced ventilation to keep the air inlet through the seal sealed by sealing joints joints low, on the other hand, the sealing tapes have a certain air permeability, also since they usually consist of an at least partially open-cell foam material, e.g. to allow impregnation such as impregnation for delayed recovery.

The sealing tapes should also reliably meet these conditions, but on the other hand can be provided inexpensively and be used in many ways.

Furthermore, sealing strips for buildings are known in which, however, no forced ventilation. These sealing tapes are equipped in such a way that they have a higher water vapor diffusion resistance (WDD resistance) in the compressed state, ie in the sealed installation state in the joint, on the inside of the room as the space outside ("inside denser than outside"). For this purpose, these sealing tapes, for example, a region of greater profile height of the foam material, attached to the sealing strip additional strip, attached to the outer space side sealing band narrow side film, a side surface coating or the like. On the EP 1811111 A2 . EP 1936246 A1 . DE 4307528 A1 . DE 102008020955 A1 . DE 200 09 674 U1 or DE 19641415 C2 be referenced by way of example. These tapes generally have a certain air permeability, since they are usually produced on the basis of an at least partially open-cell foam, in particular in order to enable impregnation such as, for example, delayed recovery. However, such a joint seal is not relevant in the present case, since due to the forced ventilation and an associated Lüftströmung by the sealing tape from the room outside to the room inside not depend on a joint seal with targeted from the inside out of water vapor diffusion. Furthermore, this sealing tapes room outside not, unless by special additional measures, an increased driving rain and UV resistance.

Object of the present invention is to provide a generic building with forced ventilation, in which the wall construction with sealing tape, which provides a joint seal an outer wall, an increased watertightness and / or increased UV protection on the outside of the wall structure and the sealing strip has, and wherein the Wall construction with seal is inexpensive to provide.

This object is achieved by a building according to claim 1. The sealing strip arranged in a sealing manner in the joint has a higher water vapor vapor braking effect on the narrow side region facing the space outside than on the narrow side region opposite the room inside facing narrow side area. By virtue of this measure, the narrow side region of the sealing strip facing the outside of the room has a higher watertightness and / or higher UV resistance, in particular also compared with the opposite narrow side region on the inside of the space. The sealing tape is designed accordingly. The higher watertightness and / or higher UV resistance is thus achieved by fitting the sealing tape to the space outside narrow side area, which has a higher WDD resistance in the mounting position of the tape in the joint at a compression of the tape to 30% of its initial height room inside narrow side area. The narrow side region with a higher WDD resistance usually also has a higher airtightness than the opposite interior narrow side region. As "initial height" is always understood the sealing tape height with completely free relaxed sealing strip, in the direction broadside broadside.

The specification "inside denser than outside" with respect to the WDD resistance is thus abandoned in the building according to the invention and vice versa. The measures previously taken in different ways to achieve an increased WDD resistance such as accumulation of material, arrangement of an additional profile or additional strip, coatings or sheathing on the inside of the sealing strip are now moved to the room outside and strengthen the characteristics of driving rain and / or UV protection. At the same time it is made more difficult that air is sucked by the forced ventilation from the outside into the space outside sealing tape area where it cools or even condenses water vapor. The previously targeted - in terms of WDD resistance and the measures taken to achieve the sealing strip design - weaker pronounced outside space of the sealing strip is now laid to the inside of the room and can be further weakened if necessary, since only the function of thermal Insulation is required (the thermal conductivity of the impregnated sealing tape decreases with decreasing density / decreasing compression in the joint).

At the same time, the sealing strip used according to the invention may be used in a wall structure or building, which in particular has no forced ventilation, for joint sealing between the two components, in particular wall part and frame component, in an installed position in which the WDD resistance is higher inside the room than outside the room, as described above. This refers in particular to a (real or fictitious) mounting position with a compression of the sealing strip to 30% of its initial height (height at completely free relaxation of the sealing strip). Reference is made below to the WDD resistance value (Sd value). For this purpose, the sealing tape is only - with respect to the installation position of the building according to the invention - installed laterally inverted in the joint. The broad side with fastening means can also serve here the attachment of the sealing strip to the frame member.

Furthermore, the invention relates to the use of the sealing tape for sealing at least one joint in a building with forced ventilation, in particular a heated building, and a method for forced ventilation of this building. The statements within the scope of the invention also apply to each other independently of each other.

Advantageous embodiments emerge from the subclaims.

The building according to the invention with forced ventilation device has at least one connected to this or in forced ventilation exchange space with inventively designed joint seal, if necessary, this refers to all with forced ventilation. The use of the aforementioned wall structure or of the sealing strip is preferably carried out in a heatable building, in particular with central heating for heating at least one or all of forced-ventilated Rooms. Preferably, at least one or all walls of the building are designed according to the invention. The room temperature can be in the range of 10-30 ° C or higher.

Furthermore, the invention relates to a method for forced ventilation of a building according to the invention, wherein the air passage through at least one seal sealed with the sealing strip according to DIN 18542 maximum 100 liters per meter joint length and hour is extrapolated to 10 Pa pressure difference.

The equipment of the sealing strip with space outside WDD increased resistance or the formation of the corresponding WDD braking means can be carried out by known measures, as they are made in the equipment of sealing bands in which the WDD resistance is higher inside room than room outside.

The WDD equipment or the WDD braking means may be formed as material accumulation and / or coating on the outside of the sealing tape and / or additional strips and / or preferably air-impermeable profile strip and / or intermediate layer in the sealing strip cross-section spaced from the side surfaces, without being limited thereto.

To form an accumulation of material, the sealing strip may have a cross-sectional profiling at least one or exactly one broad side, for example. Wave-, arc-, wedge- or step-shaped profiling, generally a height range, which is arranged in the region or on the outside narrow side. The profile may be continuous, monotonous or strictly monotonously increasing or possibly have intermediate elevations and / or intermediate sinks.

To form an accumulation of material, the sealing strip can have one or more fold-over regions, which increase the sealing strip height when folded over.

• Bandteil des Dichtungsbandes mit höherer Dichte (Raumgewicht)
• Seitenflächenbeschichtung (werksseitig oder baustellenseitig aufgebracht)
• teilweise oder vollständiges Umschließen des Dichtungsbandes mit vorzugsweise witterungsbeständiger Folie, wobei die Folie die außenseitige Schmalseite in Einbaulage (z.B. Kompression auf 30% der Höhe) zumindest teilweise oder vorzugsweise vollständig außenseitig bedeckt
• getrennte Bandteile des Dichtungsbandes mit unterschiedlicher Höhe (auf gemeinsamem Träger)
• Dichtungsband mit Sperrschicht (z.B. in Form einer Zwischenfolie oder Beschichtung) in einem Dichtungsbandeinschnitt, wobei die Sperrschicht vorzugsweise nahe der äußeren Dichtungsbandschmalseite platziert ist.

The WDD brake fluid, which is the driving rain-tightness and / or increased UV resistance may alternatively or additionally be designed as

• Band part of the sealing tape with higher density (density)
• Side surface coating (applied on site or on site)
• Partially or completely enclosing the sealing strip with preferably weather-resistant film, the film covering the outside narrow side in the installed position (eg compression to 30% of the height) at least partially or preferably completely on the outside
• separate band parts of the sealing band with different height (on common carrier)
• A sealing tape with a barrier layer (eg in the form of an intermediate film or coating) in a sealing tape cut, wherein the barrier layer is preferably placed close to the outer sealing tape narrow side.

On a equipment with respect to the water vapor diffusion resistance according to the EP 1811111 A2 . EP 1936246 A1 (foil arranged on sealing tape side surface), DE 4307528 A1 (Side surface coating) DE 102008020955 A1 . DE 102009013107 A1 . DE 200 09 674 U1 . DE 202010000317 (multi-part profile with several foam strips next to each other), DE 19641415 C2 (Barrier layer) and / or DE 20009674 U1 (Use of different foam materials), DE201020008330U1 (meandered or folded band), the disclosure of which is hereby explicitly incorporated, is expressly referred to. According to the teaching of these documents, the sealing tape is by the respective means in the joint space inside with a higher WDD resistance than the space inside, according to the present invention, this means is used in each case in reverse mounting position in the joint each to increase the driving rain and / or the UV Resistance. This includes that sealing tape can be used in a conventional manner, as described in the publications, in diffusion-controlled water vapor removal from the joint. The same sealing tape is thus used in other installation situation for other purposes.

Another advantage here is that due to the tightness outside the band on the inside expanded (thinner) can be performed, resulting in a better thermal insulation effect or better thermal insulation.

The accumulation of material and / or coating and / or foil, in particular accumulation of material and / or coating, is preferably stronger on the outside of the sealing band in the installed position than on the inside, thus necessitating a higher WDD resistance and also a higher UV resistance and watertightness in the installed position , "In installation position" in the context of the invention always refers to compression of the sealing strip to 30% of its initial height in completely free (outside the joint) relaxed state, unless otherwise specified in the context in detail. This installation situation is understood here as a standard, in the particular application, this may be deviated from.

The sealing strip arranged in the joint can be compressed to 30% of its initial volume in the fully relaxed state (that is, completely free outside the joint relaxed state), when arranged between two plane-parallel planes. The compression takes place in the direction broadside broadside, so that there are compressed narrow sides. The invention further relates in each case to an arrangement, in particular given physical parameters of the sealing strip in installation position such as WDD resistance, in which the sealing strip (fictitious or scaled) is compressed to 30% of its free relaxed initial volume. The sealing tape may possibly also be compressed within the scope of the invention in the joint to 20-50% or 25-40% of the initial height, with sealing contact with the joint flanks.

In the case of the sealing tape in the installation position, the ratio of the degree of compression, as percentage compression in installation position with respect to the completely freely relaxed initial state, of the sealing band section arranged on the inside of the room sealing tape section arranged on the outside, can be ≥ 1.5-2 or ≥ 2.5-3. If necessary, the ratio can also be ≥ 3.25-3.5 or ≥ 4, for example up to 5-6 or higher, wherein it must be ensured that both sections sealingly abut against both joint flanks. Due to a high ratio and thus low compression of the space inside sealing tape section, this section may have a comparatively high thermal insulation.

The sealing tape preferably comprises a strip of compressible and resilient flexible foam having a thickness a in the fully released condition (outside the joint).

To increase the material density of the sealing strip in the installed position, in the narrow side region of the sealing strip, which faces the outside of the room and has a higher airtightness and / or higher vapor barrier effect due to the increased material density, another material (additional material) may be embedded or placed in the foam strip. The additional material may be partially or completely embedded in the foam strip. If the filler material is completely embedded in the foam strip, it has a different air permeability (preferably a lower one) and / or another WDD resistance (preferably a higher one) than the material of the foam strip (in each case for a non-pressure-loaded state). If the additional material is placed on the foam strip, then the additional material preferably has a different air permeability and / or a different WDD resistance than that of the foam strip, in each case independently preferably a lower air permeability and a higher WDD resistance, optionally air permeability and / or WDD resistance to be the same as that of the foam strip, eg in the range of ± 10-20% or ± 25-30% of the value of the air permeability or the WDD resistance of the same. The recessed material preferably extends over the entire length of the strip and at height h, where h may be from 1/10 a to 1/2 a or up to 1/4 a, without being limited thereto. The other material can be compressible according to an alternative under conditions of use, even when installing the sealing strip in the joint, preferably with a higher rigidity than the material of the foam strip. According to another alternative, the other material is not compressible, for example. Designed as a massive bar. The (partially) embedded or attached additional material is preferably designed as a strip which extends over the sealing strip length.

Particularly preferred is the material of the sealing strip, which results in the compressed sealing strip increased material accumulation, designed as a profile region of the sealing strip. The profile region is thus formed as an integrally formed on the sealing strip area thereof. The sealing strip in completely free relaxed state thus has a height profile. The profile region forming a height region of the sealing strip thus forms a region with increased WDD resistance on the one hand and with increased watertightness and UV resistance and / or reduced air permeability on compression of the sealing strip in the joint. The profile region may be formed in a wavy, wedge-shaped, step-shaped, arc-shaped or other manner in cross-section on at least one (or exactly one) broad side. The height range of the profile is arranged on the outside of the room narrow side, the low area on the inside of the room narrow side. The profile may preferably increase steadily from one narrow side to the other or possibly in the central region one (or possibly more) sink (s).

Alternatively or additionally, the water vapor diffusion (WDD) braking agent, which arranged here outside space causes increased rain-tightness and / or UV resistance of the weather strip, designed as additional strips, for example of a plastic material which is adhered to the sealing strip by means of a (self) adhesive layer. The additional strip may have a lower compressibility or stiffness and / or higher water vapor diffusion resistance coefficient, as the foam material of the sealing strip, if necessary, but the additional strip may also consist of the same material as the sealing strip, for example, if the additional strip to increase the profile height of the sealing strip on a Base strip is glued on. The properties of the additional strip can thereby be particularly easily adapted to the respective requirements. The additional strip may consist of foamed or non-foamed material. The additional strip may be formed for delayed recovery, in particular impregnated, be, if appropriate, this is not the case. If the base strip material has a certain open porosity, then the additional strip can have essentially the same or a preferably lower open porosity than the foam material or be of essentially closed-pored form. The additional strip may also consist of a solid, preferably non-porous, material, which may not be deformable under the pressure forces present in the installed state. The additional strip may be elastically deformable. Preferably, the sealing strip has only such a high flexural rigidity that the sealing strip can be made up as a roll, preferably with pre-compressed sealing strip in the rolled-up state.

oder ≤ ${}^1{/}_{10}$

der Breite des Dichtungsbands betragen. Der Zusatzstreifen oder der Profilbereich kann sich über eine Höhe von 5-95% der Höhe des Dichtungsbands im vollständig dekomprimierten Zustand erstrecken, z.B. 5-50% oder 10-25% der Höhe desselben.The additional strip and / or the profile area preferably extends only over a part of the width of the sealing strip, possibly also over its entire width, then with suitable profiling. The width of the additional strip or the profile area can be ≤ ⅓ to 1/2 or ≤ 1/4 to ${}^1{/}_6$

or ≤ ${}^1{/}_{10}$

the width of the sealing strip amount. The additional strip or the Profile area may extend over a height of 5-95% of the height of the sealing band in the fully decompressed state, eg 5-50% or 10-25% of its height.

The accumulation of material may preferably increase continuously to the outside, possibly also with a depression in the middle, eg according to the DE 10 2008 020 955 A1 , as long as the outside is a stronger version of the sealing strip or strip than inside guaranteed.

Alternatively or optionally in addition to another WDD braking means, in particular a profiling, additional strip or side surface coating, according to a further preferred embodiment, the sealing strip preferably has a foldable region, which is folded back on the body of the sealing strip to give an accumulation of material, which in mounting position leads to an increase in the driving rain-tightness and / or UV resistance of the sealing strip. The sealing strip may be one or more times, for example. Collapsible 2 or 3 times, so for example. Have one, two or three sections, which on the base body (existing after folding wide base of the foam body, which the sealing tape width in installation position defined). The folding is in each case preferably facilitated by suitably positioned sealing strip incisions with the fate of connecting webs. The body of the sealing strip or the remaining main body and / or Umklappbereiche can each be formed independently rectangular or profiled, for example. Wedge, arc or wave-shaped, preferably with reinforcement of the accumulation of material to the space outside narrow side. Several or all sections of the body or the basic body may be rectangular, in particular with the same height.

The material-accumulated area of the sealing strip in the completely free relaxed state of the same one by a factor of ≥ 1.5 or ≥ the factor of 1.75 or at least twice or three times as high as the base body, preferably also factor ≥ 3.25 - 3.5 or more or ≥ 4 -6 its height, optionally only up to 4-4.5 times or only 3.3-3.5 times the same. This can be given in particular when training with profiling, additional strips or folding. As a result, the base body or not material-accumulated area in the joint is relatively strong relaxed - nevertheless fitting sealingly against the joint walls - so here due to the low accumulation of material an increased thermal insulation effect or lower heat transfer coefficient than in the material-accumulated, impact-proof area.

The sealing strip has in the installed position in the space inside arranged portion preferably a compression of ≤ 25% of the space outside compression, based on the free expanded state of the sealing strip, with sealing contact of the sealing strip at the two joint edges of the frame profile and reveal in the lower compression section. Compression of the less compressed section may also be ≤ 20-22% or ≤ 18-20% of that of the higher compression section, and optionally ≤ 12-15% of the same. Due to the very low compression of the sealing strip section has a lower thermal conductivity and thus higher thermal insulation. This is made possible because this section is arranged on the inside of the room and sufficient watertightness is provided by the space outside section of high compression. The higher compression region is the above-mentioned 30% compression region than (fictitious) normal value.

Particularly preferably, the sealing tape has a coating on the outside narrow side, which increases the WDD resistance. The interior space coating may have a WDD resistance in the range of 0.05 to 20 meters. The WDD resistance and the watertightness and UV resistance of the space outside coating is higher than the interior coating. Although the space inside coating has no particular function in terms of the WDD resistance or the watertightness in a forced-ventilated room installation, it allows the same sealing tape to be used even in a non-forced-ventilated building or room, so that the WDD resistance of the sealing strip Interior space in installation situation (30% compression under the above conditions) is greater than the space outside, such as to the EP 1 811 111 A1 described. The coating may each be that of a polymeric material such as latex or an acrylate polymer. The coating may be a plastic material applied as a melt, in particular a melt acrylate. The plastic material, in particular Schmelzeacrylat may at 160 ° C have a viscosity of 0.005 to 25 Pa s or in the range of 0.01 to 15 Pa s, without being limited thereto (viscosity measured with Brookfield plate cone meter Brookfield type CAP 2000 , 100 revolutions / minute, 250 seconds The plastic material may have a softening range at which the material can be applied as a melt, at temperatures in the range of 60-250 ° C or 80-225 ° C.

The sealing strip may have a substantially waterproof impregnation or coating or film arranged on the narrow outer side to be arranged on the outer space side.

Alternatively or in addition to another WDD braking means, which preferably at the same time increases the driving rain-tightness and / or the UV resistance, a barrier layer may be provided in the sealing strip cross-section, ie spaced from both narrow sides, in the sealing strip. As a barrier layer is here in particular a layer of a material different from the foam material understood, which preferably similar to a coating material in liquid or pasty form on the corresponding sealing strip portion applicable and can be brought into its blocking state for curing, wherein the curing under drying, reaction with a Hardener including oxygen or humidity and radiation can be brought. Such materials, in particular plastic resins, are known per se and may comprise adhesives.

The barrier layer or film may extend through the entire or part of the height of the sealing strip, or be arranged in an incision of the same, with connection of the two opposing sealing strip areas through a connecting web of the foam material.

Advantageously, the film or the barrier layer is arranged close to the space outside narrow side, in order to give the impact of driving rain and / or UV radiation as close to the surface as possible protection of the sealing strip. The film or barrier layer may be disposed at a distance of 1/3 - 1/15 of the sealing tape width or 1/4 - 1/10 thereof to the outer narrow side, or less.

Alternatively, a film or coating can also be arranged on the outside of the sealing strip narrow side.

The film may be a plastic film or possibly metal foil.

The barrier layer or film preferably consists at least partially of a water vapor diffusion resistance (WDD resistance) with the humidity reversible changing material (the barrier layer / film thus increases the WDD resistance to the foam material, but this is still permeable to water vapor diffusion). Preferably, the barrier layer or film at least partially made of a material which reduces its WDD resistance with increasing humidity. The portion of the barrier which is made of the reversibly reversible WDD resistance with the humidity (rev.WDD material), is the water vapor diffusion path partially or preferably completely arranged by asserting. The s _D value (water vapor diffusion value based on an air layer thickness in meters) of the barrier layer or film at 25% on the one hand and 72.5% relative air humidity on the other hand (each at 20 ° C.) preferably differs by a factor of ≥ 1.1 -1.2, preferably ≥ 1.5-2, optionally up to a factor of 3 to 5 or to 10 to 20 or even to 50 or to 100 or 250 or beyond, whereby the dependence of the water vapor diffusion of the barrier layer or film is defined by the humidity. The difference between the two s _D values of the barrier layer at the two specified relative humidities may be ≥ 0.25 m or ≥ 0.5 m or preferably ≥ 0.75-1 m, for example up to 5-10 m or up to 20 m. 25 m or more. Preferably, the barrier layer or film consists at least partially of a synthetic, water-swellable polymer as rev.WDD material. Particularly preferably, the barrier layer or foil or in each case a layer thereof consists at least partially of an ionomer material as rev.WDD material. By "ionomer material" is meant a polymeric material in which the polymer 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. The polymer backbone is thus preferably negatively charged. The countercations to the polymer backbone are preferably selected from the group ammonium, lithium, sodium, potassium, magnesium, calcium or zinc or mixtures thereof, more preferably sodium and / or potassium, most preferably sodium. According to another preferred embodiment, the rev.WDD material of the barrier layer or film is made of a polyamide material or of EVOH (ethylene vinyl alcohol), although ionomer materials are most preferred. The rev.WDD material preferably forms a respective layer of the barrier layer or film, preferably a continuous layer, with respect to the surface extension of the barrier layer or film. Optionally, the barrier layer or foil consists of a material whose WDD resistance practically does not change with changing atmospheric humidity, for example when changing at 25% on the one hand and at 72.5% relative humidity on the other hand (each at 20 ° C.) by less than 10% or less than 2-5% (reference: 25% humidity).

The barrier layer or film may extend partially or completely over the surface of the outer space side sealing strip narrow side or sealing strip height, for example over ≥ 50-75% or ≥ 80-85% of the area thereof, or ≥ 90-95% or substantially 100% thereof ( in each case based on the installation position, 30% compression). The film may be attached to the narrow side or to one or both broad sides of the sealing strip. The barrier layer or film may have a thickness in the range of 5-1000 μm or 5-500 μm or 10-200 μm. The film is preferably limp. The film or barrier layer are each preferably not intrinsically rigid so flexible, so that they do not or not significantly affect a provision or compression of the sealing strip.

By virtue of the rev.WDD material, the water vapor diffusion path is preferably predominantly, i. to ≥ 50-75% or ≥ 80-90% or more preferably ≥ 95% up to 100% in its cross-section interspersed (possibly also to ≥ 20-35%).

The WDD braking means, which increases the rainproofness of the sealing strip on the outside, such as material accumulation, coating, barrier or the like., Is preferably designed such that this at the same time increases the watertightness of the sealing strip by at least 50 Pascal (Pa) or by at least 100 Pascal , in particular, increased by at least 150 or 200 pascals. As a result, even with comparatively air-permeable and thus comparatively less impact-proof body foam materials, a significantly improved watertightness of the sealing strip as a whole can be achieved. The sealing strip as a whole preferably has On the outside a watertightness of at least 300 Pascal or at least 600 Pascal on. The statements regarding watertightness and their determination refer in each case to DIN EN 1027. The watertightness of at least 300 or at least 600 pascal refers in each case to the installation position of the sealing strip, ie at a compression to 30% of the initial volume of the completely relaxed without external force acting sealing strip , As a result, the sealing strip can have sufficient watertightness. At the same time, this impact-proof coating has a WDD resistance, so that the WDD resistance on the sealing strip is higher on the outer space side than on the inner space side. The inside of the room can also be provided with a waterproofing effect that increases the watertightness of the sealing strip by at least 50 Pascal (Pa) or by at least 100 Pascal, in particular by at least 150, whereby the rainproofness in the interior is at least 300 Pascal or at least 600 Pascal Installation position of the sealing strip, ie at a compression to 30% of the initial volume of the completely free relaxed without external force exposure sealing tape is.

The foam material of the sealing strip (before its impregnation, eg for delayed recovery) may have an air permeability in the range of 10-1000 l / m ² s or 25-1000 l / m ² s or even 40-800 l / m ² s in combination with the coating according to the invention in relation to the joint seal results in an advantageous embodiment, in particular also during impregnation of the body material. Generally in the context of the invention, the specified air permeability refers to the standard conditions of a 10 mm thick piece of foam (fully relaxed) at a measured negative pressure of 0.5 mbar, test area 100cm2; Frank device 21443; DIN EN ISO 9237. According to a preferred variant, the air permeability of said foam material is ≦ 125-150 l / m ² s or preferably ≦ 75-100 l / m ² s, optionally also ≦ 40-50 l / m ² s or ≤ 20-25 l / m ² s. As a result, there is a sealing strip, which is particularly preferably used internally in the installation position and application as well as when applied according to the principle of a WDD resistor inside than outside, with an already very low air permeability and / or high water vapor transmission resistance of the tape through the WDD brake fluid can be further targeted. Furthermore, the tape is preferably delayed resiliently impregnated, so targeted restorable in the joint. According to another preferred variant, the air permeability of said foam material is ≦ 600-800 l / m ² s or preferably ≦ 350-500 l / m ² s. The air permeability of the foam material may here be, for example, in the range of 100-1000 l / m ² s or preferably in the range of 150 - 800 l / m ² s or 200-600 l / m ² s.

The foam body is preferably formed in one piece, that is continuously seamless.

Optionally, the sealing tape may have a zone or equipment inside the room, which also causes a local increase in WDD resistance and / or airtightness, but less than on the outside of the room.

The water vapor diffusion resistance of the space outside-side zone of the sealing band in the installed state thereof may be smaller than the space inside-side zone thereof. The water vapor diffusion resistance value - also S _d value - may correspond to 1.5 to 10,000 times the value or greater of the water vapor diffusion value of the sealing band area defining the space outside vapor barrier effect. By way of example, the said ratio of the S _d values on the inside to the outside of the room can be in the range from 1.5 to 5,000, for example water vapor diffusion braking agents ≦ 2,000 to 3,000 or ≦ 1,000 to 1,500. The ratio of the S _d values may, in particular, be in the range from 2 to 150, for example in the range from 2 to 50. The area inside the zone, film or coating may also be formed such that it is permeable to water vapor diffusion. This can happen in particular each refer to a sealing tape with 30% compression on its initial volume of the fully relaxed sealing tape.

The sealing tape may generally have a width of ≥ 3 cm ≥ 5 cm, for example, up to about 15 or 20 cm or more, so that the sealing tape is adapted to seal an associated joint over its entire depth, so both the space inside as also form the space outside seal.

In general, a first of the broad sides of the sealing strip can be provided with a fastening means by means of which the sealing strip can be fastened or adhered to the corresponding contact surface of the frame profile or wall reveal. Such a fastening means is, for example, an adhesive strip or an adhesive layer, including a self-adhesive layer. The fastening means of the sealing strip on the frame profile can also be embodied in other suitable ways, for example as a force and / or positive locking means, which can cooperate with corresponding fastening means of the frame profile.

Generally in the context of the invention, the fastening means of the sealing strip on a broad sides, for example in the form of (self) adhesive layer, extend over only a part or the entire width of the sealing strip or comprise a plurality of along the broad side adjacent arranged fasteners, which also laterally spaced can be arranged to each other. The fastening means may be arranged at the level of the braking means (ie, opposite thereto) and / or laterally adjacent thereto. The attachment means may also extend over the entire broad side of the sealing band.

Particularly preferably, the sealing strip is adapted or formed, in particular with the sealing strip associated frame profile or attached to the frame profile sealing strip, that the sealing strip forms both a space-side seal and a space-outside sealing of the frame profile. Further sealing means in the joint between the frame profile and soffit need not be provided.

Preferably, the sealing strip extends over at least almost or the entire window frame width, so that the sealing strip results in the space inside and outside space-side sealing of the joint on the frame profile. The foam body of the sealing strip here is preferably formed integrally in the direction of the space inside-room-outside outer one-piece or in one piece.

In the context of the invention, the term "broadside" in the sense that this is the frame profile or window frame facing side of the sealing strip or this or this opposite side. The two narrow sides of the sealing strip are in this case the room outside or room inside facing.

The sealing strip may generally have at least one zone which functions as a thermal barrier coating when the sealing strip is properly installed in the joint.

Preferably, the width of the broad side of the sealing band is greater than the height of one or both of the narrow sides when compressed to 30% of the initial volume of the sealing band (starting from the fully expanded state of the free sealing band outside the joint, corresponding to the installed condition). In the installed state, the ratio of the extensions from broad side to narrow side of the sealing strip is at least 1: 1, preferably ≥ 1.25: 1 or ≥ 1.5: 1, the ratio can be up to 10: 1 or up to 15: 1 or up to 20: 1, without being limited thereto.

The sealing tape is preferably a foam strip or comprises such (preferably to ≥ 50-75 vol .-% or ≥ 85-95 vol .-% of the sealing tape in total), which consists of open or closed cell foam material or mixed partially open and partially closed-cell material, and forms the sealing tape body. The sealing tape may also comprise zones of different materials, for example those of open-cell and closed-cell material. The foam strip is preferably elastically compressible. The sealing strip or the foam material of the same is preferably designed resiliently resilient. The sealing tape may be impregnated with a means to adjust one or more of its properties such as water vapor diffusion resistance, water and / or airtightness, and / or the recovery properties of the foam material after compression thereof, in particular the recovery properties with respect to a delayed recovery. For this purpose, the foam material may be impregnated on a narrow side and / or a volume region, which preferably adjoins a narrow side, or homogeneously over the entire volume of the sealing strip. For this purpose, known plastic resins, in particular acrylates, in particular as dispersions, can be used. The delayed recovery impregnation may be such that after maximum compression, full recovery will occur only after ≥ 0.25-0.5 hours, ≥ 1-2 hours, or ≥ 5-10 hours, preferably ≤ 48-72 hours or ≤ 24 Hours or at most after a time corresponding to the complete impregnation (maximum impregnation absorption) of the foam material. These data refer in each case to 20 ° C and 50% relative humidity. The impregnate may, as usual, contain other components such as flame retardant components.

The foam strip may preferably extend in one piece at least in individual cross-sectional areas of the sealing strip over at least almost the entire width and / or height of the sealing strip. Optionally, the sealing tape may have two or more separate regions of foam material, preferably a one-piece contiguous area. Generally, the sealing tape may be compressed in its installed position from the fully decompressed state to a thickness of 7-40% of the thickness in the decompressed state, or compressible, preferably to a thickness in the range of 10-30% or 10-20%. The sealing tape may have a height (length of the narrow side) of ≥ 1-2 cm or ≥ 3-5 cm in the fully decompressed state.

The joint sealed in accordance with the invention may have an air permeability of ≦ 0.2-0.3 m ³ / [hour x meter (daPa) exp. 2/3] or preferably ≦ 0.1-0.15 m ³ / [hour x meter ( daPa) Exp. 2/3], determined according to DIN EN 1026. These values can also apply independently for the sealing tape area with higher WDD resistance. The lower WDD resistive tape area may have air permeability that is ≥20-30% or ≥40-50% higher than the higher WDD resistivity area (the higher WDD resistance area than the 100% basis). The air permeability of the lower WDD resistive tape area may be up to a factor of 3 to 4 or up to a factor of 5 to 6 or greater higher than that of the higher WDD resistance area.

Preferably, the foam material of the sealing strip (in the impregnated state) has an air permeability of up to 800-1000 l / m ² s, for example in the range of 25 to 800 l / m ² s or 50 to 800 l / m ² s, preferably in Range of 75 to 600 l / m ² s or even 100-600 l / m ² s, for example in the range of 50 to 400 l / m ² / s. This is understood in each case and also generally within the scope of the invention under the test conditions Frank test device No. 21443, 100 cm ² sample diameter, 1 cm sample thickness, 0.5 mbar differential pressure, relaxed state, DIN EN ISO 9237.

The sealing tape can each have a constant over its length Have cross-section.

The building may in particular be a residential and / or office building. The sealed by the sealing tape and forced ventilation room can be a living and / or office space. The temperature in the building or room can average 14 ° C-35 ° C or 16 ° C to 30 ° C.

The forced ventilation can be effected by a suitable ventilation system, in particular a ventilation fan or air conditioning. The forced ventilation is used to supply fresh air to the rooms and to remove moisture from the rooms in the face of an at least largely dense building envelope.

The forced ventilation can in particular achieve ventilation with the prescribed maximum value of the passage of air through the joint, i. according to DIN 18 542 maximum 100 liters per meter joint length and hour extrapolated to 10 Pa pressure difference, possibly also a maximum of 200 liters per meter or preferably a maximum of 75-90 liters per meter under the conditions mentioned. As a result, the joint has sufficient tightness.

Due to the forced ventilation, however, a significant passage of air through the joint can be effected, for example due to a given porosity of the sealing strip. The air passage according to DIN 18 542 can here be ≥ 3-5 liters per meter joint length and hour extrapolated to 10 Pa pressure difference, if necessary also ≥ 10-20 liters per meter under the conditions mentioned. As a result of the air flow, diffusion of water vapor from inside to outside with respect to the respective room no longer takes place or is no longer relevant. However, for the reasons mentioned above, the sealing strip with WDD resistance in the installation position which increases over its width to a narrow side can also be used advantageously in this case, namely in order to achieve increased UV resistance and / or watertightness.

The frame profile may in particular be selected from the group consisting of window frames, door frames and frames and enclosures of hatches.

In particular, but not limited to, the building may be a passive or low energy house.

In the context of the invention, a passive house is understood to be a building which, owing to its good thermal insulation, does not have to have classic building heating or does not have it, but nevertheless has an internal temperature which is sufficient for the permanent residence of persons, in particular as an annual average. In particular, the passive house can not exceed a maximum heating requirement of 15 kilowatt hours, per square meter in one year, preferably according to the current certification criteria of the passive house institute Darmstadt. If necessary, the maximum heating requirement can be 20-30 kilowatt hours, per square meter in one year. The maximum energy demand of the house can amount to a maximum of 120-150 kWh / (m2 * a), in particular a maximum of 120 kWh / (m2 * a). The requirements for airtightness and / or the minimum efficiencies are preferably met.

The discharged through the forced ventilation from the respective room exhaust air is usually fed to a heat exchanger, usually an air-to-air heat exchanger, which may be provided on or in the building to heat by means of this supplied to the room supply air.

In most cases only at extremely low outdoor temperatures such as below 10 ° C or below 0 ° C or even below -10 ° C or -15 ° C is a part of the heating demand by a heating system such as a fixed installed central heating of the building, which the respective or heated several such rooms. The heating can be central heating. The heating can be done by common energy sources such as district heating, gas or oil, renewable materials such as wood or a solar technology or by heat exchangers including geothermal energy operate. Building therefore generally preferably includes such a stationary heating system.

The invention is not limited only to passive houses but also includes other buildings with forced ventilation, for example corresponding low-energy houses. The buildings usually have a little air-permeable building shell. The built-in, a forced ventilation effecting ventilation system, the removal of spent air and water vapor from the respective room, the wall is equipped with wall construction according to the invention, guaranteed and effected. In order to minimize heat loss through the ventilation is usually a heat recovery from the exhaust air, so that the building generally preferably has a heat recovery system for heat recovery from the exhaust air through heat exchange, usually with heat transfer to the supply air. The forced ventilation system is preferably designed or adjusted so that within a maximum of 48 hours or a maximum of 12 to 24 hours, preferably a maximum of 8 to 6 hours, usually about every 1 to 4 hours, the entire air of the building exchanges ("building" refers Here are the forced-ventilated rooms, ie in particular all those which are supplied with air supply and removal and the intervening spaces with air exchange to these, in particular by Luftumlenkeinrichtungen such as overflow or overflow ) may be from 0.4 / h to 1.0 / h or from 0.2 / h to 2.0 / h, optionally from 0.1 / h to 4.0 / h or 0.025 to 4.0 / h or 0.025 to 2.0 / h.

Preferably, the ventilation system is designed such that this fresh supply air, preferably filtered and preheated supply air, certain rooms such as the living and sleeping areas of a residential building and dissipates exhaust air from other rooms, especially under suction, such as from the kitchen, bathroom, toilet and The like, preferably from rooms in which vapors and / or odors or strains of the air arise, which may possibly be undesirable for the building users. The supply air is therefore mostly external desire, the ventilation system is equipped accordingly. The supply air can be transferred from the rooms with air supply by suitable Luftumlenkeinrichtungen such as overflow into the rooms with exhaust air or in between rooms. The exhaust air is preferably supplied to said heat exchanger.

The sealing strips used in accordance with the invention can be used independently of each other in joints of exterior walls, in particular in each case between reveal and a frame component such as window or door frame of an exterior wall in each of said spaces. This can apply to the rooms with air supply. This may additionally or alternatively apply to the spaces with overflow. This may additionally or alternatively apply to the rooms with exhaust air discharge from the space which is supplied to the heat exchanger. This may apply to combinations or all of the spaces mentioned. Optionally, the building may have other rooms, which are not connected to the forced ventilation, such as basement or storage rooms.

• Energiekennwert Heizwärme max. 15 kWh/(m²a) oder Heizwärmelast max. 10 W/m²
• Drucktestluftwechsel n₅₀ max. 0,6 h^-1
• Energiekennwert der gesamten Primärenergie max. 120 kWh/(m²a) inkl. Haushaltsstrom.

Preferably, in relation to the building:

• Energy characteristic heating heat max. 15 kWh / (m ² a) or heating heat load max. 10 W / m ²
• Pressure test air change n ₅₀ max. 0.6 h ^-1
• Energy characteristic of the total primary energy max. 120 kWh / (m ² a) including household electricity.

• Energiekennwert Heizwärme max. 20-30 kWh/(m²a) oder Heizwärmelast max. 15-20 W/m²
• Drucktestluftwechsel n₅₀ max. 0,8-1,2 h^-1
• Energiekennwert der gesamten Primärenergie max. 180 kWh/(m²a).

Where applicable, in relation to the building:

• Energy characteristic heating heat max. 20-30 kWh / (m ² a) or heating heat load max. 15-20 W / m ²
• Pressure test air change n ₅₀ max. 0.8-1.2 h ^-1
• Energy characteristic of the total primary energy max. 180 kWh / (m ² a).

• Energiekennwert Nutzkälte max. 15 kWh/(m²a) oder max 20-30 kWh/(m²a).

For non-residential buildings may apply in each case:

• Energy characteristic useful refrigeration max. 15 kWh / (m ² a) or max 20-30 kWh / (m ² a).

The information on the pressure test air change can each apply independently of the other parameters of the respective examples.

In particular, it can be said that thermal comfort (ISO 7730) is guaranteed only by reheating the fresh air volume flow, which is required for sufficient air quality (DIN 1946) - without additionally using circulating air.

The building can be highly thermally insulated, for example with a thermal insulation composite system. The thermal insulation of the building envelope as a whole can correspond on average to the building envelope of a thermal insulation with a thickness of 15-20 cm or greater with a thermal conductivity of the insulating material of ≤ 0.08 W / mK.

The building can be designed to comply with DIN 4108.

According to differential pressure method, the building envelope, all or all of which are arranged above earth level seals are formed according to the invention, be checked for their air tightness. The differential pressure method is standardized in ISO 9972: 1996 and the subsequent EN 13829 Thermal performance of buildings - Determination of the air permeability of buildings. Differential pressure method , German adoption DIN EN 13829: 2001-02. These standards also preferably correspond to a building according to the invention.

From the total results of the overpressure and underpressure of the building, the mean air exchange rate (n50 value) is calculated (blower door test). This indicates how often the air in the measured building due to air leakage at a reference pressure renewed from 50 Pa. An n50 value = 2.5 h ^-1 means that the air in the building is replaced 2.5 times by air leaks at a pressure difference of 50 Pa in one hour. The exact sequence of the measurement is regulated in DIN EN 13829. The measurement is about two goals. Firstly, the amount of air that the fan conveys, which escapes through unavoidable joints, etc., must replace the air in the building at most 3.0 times per hour (stipulated by the German Energy Saving Ordinance - EnEV, for buildings with ventilation systems at most 1.5 times) and secondly, when performing the measurement, the defects should also be located.

Typical air exchange rates as a result of building leak tightness measurements are: In leaky old buildings 4 to 12 h ^-1 ; in new buildings without special care 3 to 7 h ^-1 ; for low energy houses 1 to 2 h ^-1 and for passive houses 0.1 to 0.6 h ^-1 . Air-tightness is particularly important in passive houses, so there is a limit of 0.6 h ^-1 (measured at 50 Pa each).

The forced ventilation of the building can be set or adjustable so that in the forced-ventilated space a negative pressure of at least 1 to 1.25 Pa or at least 1.5 to 2 Pa prevails, so that a clear passage of air through the joint is given and the joint seal according to the invention is particularly advantageous. The negative pressure can be ≤ 3-4 Pa (especially in room-air-dependent fireplaces) or ≤ 7-8 Pa (especially in room-independent fireplaces).

All standards mentioned in connection with the invention, in particular DIN standards, refer to the time of the filing date of the priority right ( DE 20 2012 104 454 ; Filing date: 19.11.2012) last valid version, without consideration of draft standards.

• Figur 1 zeigt eine schematische Darstellung eines Gebäudes mit Zwangslüftungseinrichtungen und einem Wandaufbau mit erfindungsgemäß angeordnetem Dichtungsband;
• Figur 2 zeigt eine Detailansicht von Figur 1 mit Wandaufbau und Rahmenprofil im Querschnitt;
• Figur 3 zeigt drei Ausführungsformen von erfindungsgemäß eingesetzten Dichtungsbändern gemäß den Figuren 1 und 2 (Figur 3A-13) ;
• Figur 4 zeigt eine weitere Variante eines erfindungsgemäß eingesetzten Dichtungsbandes (Figur 4A) mit Abwandlung (Figur 4B) und in Einbausituation (Figur 4C);
• Figur 5 zeigt eine weitere Variante eines erfindungsgemäß eingesetzten Dichtungsbandes in drei Abwandlungen (Figur 5A-5C);
• Figuren 6, 7 sowie Figur 8A, 8B zeigen weitere Varianten von erfindungsgemäß eingesetzten Dichtungsbändern im Querschnitt.

The invention is explained by way of example with reference to the figures:

• FIG. 1 shows a schematic representation of a building with forced ventilation and a wall structure with inventively arranged sealing strip;
• FIG. 2 shows a detail view of FIG. 1 with wall construction and frame profile in cross section;
• FIG. 3 shows three embodiments of sealing strips according to the invention used in accordance with the Figures 1 and 2 ( Figure 3A-13 );
• FIG. 4 shows a further variant of a sealing strip used according to the invention ( FIG. 4A ) with modification ( FIG. 4B ) and in installation situation ( FIG. 4C );
• FIG. 5 shows a further variant of a sealing strip according to the invention used in three modifications ( Figure 5A-5C );
• FIGS. 6, 7 such as FIGS. 8A, 8B show further variants of sealing tapes according to the invention used in cross section.

FIG. 1 schematically shows in cross-section an inventively designed building 1 with a forced ventilation device 2 and at least one forced ventilated room 3. The wall structure 4 of the forced ventilated space comprises an outer wall 4a with at least two adjoining components 5a, 5b as a component 5a with wall reveal and at least one frame profile 5b. Between the two components, a joint is formed and sealed with at least one sealing strip 10, by compressed arrangement of the sealing strip between the two components. The building may be a low-energy or passive house and have an integrated heating system as building heating. In particular, in heated buildings for ventilation usually a forced ventilation provided, so that the invention is particularly advantageous. The forced ventilation is set here is that the passage of air through the sealed seal with the sealing strip according to DIN 18542 in the range of 1 to 100 liters per meter joint length and hour extrapolated to 10 Pa pressure difference, for example in the range of 5 to 90 liters per meter below the mentioned conditions. In this way, an air flow through the sealing strip is effected, with the direction of flow from the outside of the room to the inside of the room, so that due to the flow of water vapor diffusion is no longer present or in relation to a moisture removal from the interior of the room is no longer relevant. In the interior of the room, for example, a negative pressure of ≥ 1-2 Pa can be present, for example up to 4 Pa or also up to 8 Pa, in relation to the outside environment of the building.

According to FIG. 2 the sealing strip 10 (corresponding to also below to the embodiments 30, 31, 32, 40, 41, 50, 51, 52, 60, 70, 80, 81) each have a first broad side B1 and a second, opposite broad side B2. The two broad sides can each be applied to a contact surface of the two components 5a, 5b. The arranged between the two broad sides foam body SchK each consists of a compressible and resilient foam, in particular each PU foam. The foam body in each case has a continuous between the two broadsides B1 and B2 water vapor diffusion path WP and also two opposite, extending transversely to the two broad sides narrow sides S1 and S2, between which the water vapor diffusion path WP extends, and which to the room outside RA and the interior space RI are arranged directed towards.

In the region of both narrow sides S1, S2, the sealing strip has different water vapor diffusion resistances when the state is compressed in the joint. The narrow side region S1 of the sealing strip facing the outside of the room has a higher vapor barrier effect (S _d value) than the opposite narrow side region facing the interior side S2, for example by a factor of 5-10. The Sd value is the sealing band narrow side with a higher vapor barrier effect in the range of 0.5 to 50 m, for example in the range 1-25 m. The higher vapor barrier effect may, according to the embodiments, be produced by a vapor retarder, such as increased material density or accumulation of material, as described below, which may also include a portion of the increased compression body.

The foam material of the sealing tape according to the embodiments may have an air permeability in the range of 10-250 l / m 2 s or 25-500 l / m 2 s, without being limited thereto. The foam material of the sealing strip can be impregnated in each case for delayed recovery, preferably with an acrylic resin, in particular of an acrylate dispersion or acrylate solution, so that the sealing strip can be introduced into the joint in the compressed state and can be filled in a sealing manner by the joint.

The sealing strip has a slight air permeability, usually based on an at least partially open-cell foam, in particular PU foam.

The sealing strip in each case has at least one broad side B1, possibly also on both opposite broad sides B1, B2, a fastening means for fastening the sealing strip to one of the abutment surfaces of the frame profile and masonry reveal, the fastening means Bf can each be formed as a self-adhesive layer SK with removable cover layer or in any other suitable manner, for example, as a positive and / or non-locking fixable on the frame profile fastener. Generally within the scope of the invention, the sealing tape can have on the fastening means, in particular self-adhesive layer, opposite broad side equipment which, in the installation position of the sealing tape, causes an increase in the water vapor diffusion resistance, wherein this equipment is arranged, in particular, in the region of a narrow side or the narrow outside in the installation position, on the outside. This finishing agent may each be integrally attached to the seal band body, such as a profile of the seal band body, the finishing agent may also be attached to the foam body, such as a coating layer of suitable material such as plastic material or foil, an additional ledge, or the like Foam strips of the same or different foam material than that of the body.

According to FIG. 3 the sealing strip or the foam body SchK has an accumulation of material, which causes an increased water vapor diffusion resistance in the compressed state of the sealing strip between plane-parallel planes, for example when compressing the sealing strip to 30% of its original volume, in the region of the narrow side on which the material cluster is arranged. The accumulation of material can each connect directly to the respective narrow side, which is the case for the embodiments shown in FIG FIG. 3 or generally within the scope of the invention. In the installation position, the profiling which increases the sealing strip cross-section causes a higher compression of the sealing strip in this area, and thus an increased water vapor diffusion resistance.

According to FIG. 3A is the profiling P formed as a waveform, the wave crest is arranged in the region of the space outside narrow side S1 or directly to this. The wave trough is arranged on the opposite, inside narrow side S2, whereby the sealing strip cross section of the one to the other narrow side S1, S2 increases continuously. Optionally, a corrugation can also be arranged in a central region of the sealing strip, so that there is a depression, where still the sealing strip higher on the outer space side narrow side S1 is higher than that on the space inside narrow side S2.

FIG. 3B shows a sealing tape accordingly FIG. 3A , but with wedge-shaped instead of wavy profile. The broadside B2 extends here straight and with a constant slope. The higher narrow side S1 is the space outside and the lower narrow side S2 is arranged in the installation position room inside. The foam body according to the embodiments of the FIGS. 3A and 3B is can be executed in one piece.

According to FIG. 3C the cross section of the sealing strip is stepped. Here, the upper step St has a rectangular profile, the lateral flanks of the step and / or the step upper side and / or the transitional regions of the step to the base body of the sealing strip can be designed independently of each other arcuate or otherwise profiled. The step St may consist partially or preferably entirely of a strip of material (additional strip), which is placed on the sealing band body and attached thereto, for example by means of an adhesive layer such as self-adhesive layer. The basic body can thus also be rectangular. It is understood that here the foam body refers to the overall body of the sealing strip, ie basic body GK plus stage St. The stage St can be made of the same or a different material as the basic body GK, so the foam body as a whole from a single material. The foam material of the step may, in particular, have a lower air permeability than the foam material of the base body, for example of closed-cell or closed-cell design, the step St may be impregnated differently than the basic body GK or have a different density, in particular higher density.

According to FIG. 4 the sealing tape is designed to or repeated folding over the same one another to give rise to an accumulation of material, so that in the installation position of the sealing strip, the accumulation of material causes an increased water vapor diffusion resistance. The material-accumulated area of the sealing strip is arranged in the region of the narrow side S1 then in the installed position. By folding the sealing strip results in a step-shaped sealing profile, similar to that according to FIG. 3C , The folding over of the sealing tape region DB1 to the base body GK is achieved by an incision E, which partially cuts through the sealing tape. By the connecting web VS, the sealing tape is still integrally formed, optionally, two foam parts may be joined together by an adhesive layer to give a corresponding structure. By the incision E also the fastening means for fixing the sealing strip on the frame profile as the self-adhesive layer SK is also severed or the fastener extends to the base body only up to the incision. An adhesive layer or self-adhesive layer for adhering the two sealing strip regions can likewise be provided on the sealing strip region, at which the inverted region DB1 with the basic body GK comes to preferably flat contact. In the FIG. 4A two such adhesive layers are shown, it is understood that only one of the two may be present. By folding the tape section is so in the sealing tape in installation position, the ratio of the degree of compression of the chamber inside arranged sealing tape section to the space outside arranged sealing tape section about 2: 1. If the tape height in completely free relaxed state 100%, the collapsed area is eg 200% compressed to 30% of its original volume, the band range of simple height from 100% to 30%.

FIG. 4B shows a development of the sealing strip according to FIG. 4A in which the sealing strip is designed to be foldable twice. The basic corpus GK is closed by two Sealing strip portions DB1 and DB2, which are separated from each other by cuts E1 and E2, each leaving the connection webs VS1 and VS2. The above is referred to accordingly. It is understood that a further adhesive layer (self-adhesive layer) can be provided here in order, in the folded state, to fix the sealing tape portion DB2 to the sealing tape portion DB1. The two sections DB1 and DB2 can each have the same width, so that also has a step profile accordingly FIG. 3C results, or have different widths.

FIG. 4C shows a sealing tape according to FIG. 4B in installed condition. The region of the base body GK, which has no layer multiplication of the sealing strip here exhibits one third of the compression of the sealing strip in the layer-multiplied section LA, starting from a sealing strip according to FIG FIG. 4B , 33% or, if modified, for example, 20%. It is understood that by further layer multiplication and / or profiling of the base body, for example by providing a base body of lesser thickness or by other profiling, in which the basic body GK on its inner side narrow side has a lower height than at its space outside narrow side, one on reduced compression of the base body GK over the layer multiplied area LA may have. For example, for this purpose, the basic body be wedge-shaped or wave-shaped, for example according to the FIGS. 3A or 3B ,

The sealing tape area with lower WDD resistance is here the single-layer area of the sealing tape. This can, according to the example of compression in the joint to 30% of its initial height with completely free relaxation (outside the joint) an air permeability of about 0.13 m ³ / [hour x meter (daPa) Exp. 2/3] (a Value). The simply folded area (double-layered sealing tape) after Fig. 4a in installation position then has a Air permeability of about 0.08 m ³ / [hour x meter (daPa) Exp. 2/3] on. The doubly folded area (three-ply sealing tape) after Fig. 4b in installation position then has an air permeability of about 0.05 m ³ / [hour x meter (daPa) Exp. 2/3] on. This may apply accordingly for the other embodiments.

FIG. 5 shows a sealing strip with foam body SchK under a cross-sectional profile of the foam body narrowing profile strip PL, which consists of a material having a higher water vapor transmission resistance than the foam material. The profile strip PL can under application conditions, that is formed in the installation position of the sealing strip, not compressible, for example, form a solid bar or a sufficiently stable hollow chamber profile. In particular, the profile strip PL can be impermeable to air. The profile strip PL here has a rectangular cross-section. The profile strip PL is according to FIG. 5 Art completely in the foam body (or possibly basic body GK) used, so that the broad side B1 is flat. According to FIG. 5B the profile strip PL is placed on the foam body SchK, to form a step profile or another profile, with profile elevation in the region of the profile strip PL. According to FIG. 5C the profile strip PL is partially sunk into the foam body. The FIGS. 5A to 5C As well as the other figures of the embodiments 3-8 each represent the sealing strip in a completely free relaxed state. According to the embodiments of the FIGS. 5A to 5C closes the profile strip PL on the space outside narrow side S2 flush with the foam body SchK, so that the narrow side S2 is flat. The recessed material extends over the entire length of the strip and with the height h, wherein the height of the sealing strip is a.

FIG. 6 shows an embodiment of a sealing strip with foam body SchK and fastening means Bf, in particular in the form of a self-adhesive layer with cover layer, according to FIG. 3 , The sealing strip here has a rectangular cross-section, if appropriate, this may also have a profile design, as in the embodiment according to FIG. 3 , To increase the water vapor diffusion on the space outside narrow side S1 and thus also the driving rain-tightness and / or the UV resistance of the sealing strip, a coating layer BS is arranged on the outer space-side narrow side S1. This coating layer may be made of a synthetic resin or a film-forming plastic material, for example, an acrylate resin, latex or the like. The coating layer BS may for example have a layer thickness of 10-100 or about 20 microns.

According to FIG. 7 the foam body SchK is surrounded by a film envelope F, which is designed as Aufraißumhüllung. For this purpose, the two film ends F1 and F2 be connected to each other separable, wherein the sealing tape is held together in a compressed state by the film envelope. The foil wrapping serves as a restoring prevention. By triggering the Aufreißumhüllung the sealing tape expands under sealing filling of the joint. In this case, a region of the film envelope F3 may remain on the sealing tape structure, for example, be adhered to the fastening means. In order to form such an arrangement, the tear-open envelope may have correspondingly arranged weakening zones. Optionally, the space outside narrow side S1 corresponding to Figures 3-6 or 8 may be formed.

FIG. 8 shows another sealing tape for installation according to the invention in a building according to the invention, as well as in the sealing bands of Figures 3-7 , The sealing tape according to FIG. 8 has a material layer Ml arranged in a cross-sectional area thereof which extends at least substantially in the direction broadside-broadside. The material layer is according to the representation in one Incision E of the foam body arranged, wherein the foam body is held together integrally by a connecting web VS. If appropriate, the material layer M1 can also extend continuously over the cross section of the sealing strip and connect the two opposite sealing strip sections DB3, DB4 to one another. The material layer M1 consists of a material which has an increased water vapor diffusion resistance compared with the material of the foam body. By the material layer Ml at the same time the driving rain-tightness of the sealing strip on the outside of the room is increased, in the arrangement close to the space outside narrow side S1 and the UV resistance of the sealing strip. The material layer may for example consist of a plastic material, an inorganic material or a metallic material, for example in the form of a plastic film or metal foil. FIG. 8B shows the over the entire sealing strip cross-section extending material layer.

It is understood that the invention is not limited to the embodiments and generally refers to sealing tapes in which the space outer side narrow side region S1 by a suitable formation of the sealing strip has a higher water vapor diffusion resistance, as the space inside region of the narrow side S1, said Sealing tape at the same time increased rain tightness and / or UV resistance of the sealing strip is achieved, such as by an accumulation of material, a coating layer, a material layer ZB in the form of a film layer or the like.

According to the embodiments or generally in the context of the invention, the sealing strip extends over at least almost or the entire window frame width, so that the sealing strip results in the space inside and outside space sealing the gap on the frame profile. The foam body of the sealing strip is in this case preferably in the direction of the space inside-room outside continuously formed in one piece or a total of one piece.

The outer space-side arranged equipment such as in particular material accumulation, additional strip, profile elevation, additional profile, coating, foil, intermediate layer according to the embodiments each has such a material thickness or height that this the watertightness of the sealing strip by at least 50 or at least 100 Pascal, preferably at least 150 Pa , increased, compared to the watertightness of the foam body without or in addition to the said equipment. The sealing strip as a whole has on the outer space side narrow side a dripping rain of at least 300 Pascal or at least 600 Pascal, under the conditions mentioned. Due to the above-mentioned equipment, the UV resistance of the sealing strip is increased outside the room. The named equipment leads in each case also to an increased water vapor diffusion resistance on the outside of the room in relation to the interior space side. The sealing tape has an air permeability in the range of 25 to 1000 l / m ² s, according to DIN EN ISO 9237, for example. 25-250 l / m ² s. This applies in each case independently for the sealing strips 10, 30, 31, 32, 40, 41, 50, 51, 52, 60, 70, 80, 81.

Claims (17)

A building with a forced ventilation device and at least one by means of this zwangsbelüftetem space and with a wall structure of the forced ventilated space comprising an outer wall with at least two adjacent components, in particular a Wandbeleibung providing component and at least one frame profile, wherein between the two components a joint is formed, and with at least one sealing strip, which is arranged to seal the gap in this between the two components, in particular between the frame profile and the wall reveal, wherein the sealing strip comprises a body of compressible and resilient foam material and the sealing strip has two opposite broad sides, which in each case a contact surface of the two components can be applied, wherein preferably a first of the broad sides is provided with a fastening means, by means of which the sealing tape at the corresponding Anla surface of the component is attachable or attachable, and wherein two opposite, are provided transversely to the broad sides extending narrow sides, namely a directed to the room outside and a room inside narrow side, characterized in that the sealing strip is formed such that both narrow side areas at the joint arranged sealing strip have different water vapor diffusion resistance and that the room outside facing narrow side region of the sealing strip has a higher vapor barrier effect than the opposite, the room interior facing narrow side area, and that the water vapor diffusion resistance increasing agent increased drip rain and / or UV resistance and / or a reduced joint air permeability with respect to the opposite sealing narrow band side causes. Building according to claim 1 or 2, CHARACTERIZED in that the building is a low energy house or passive house. Building according to one of claims 1 to 3, characterized in that the building has an integrated heating system as a building heating. Building according to one of claims 1 to 3, characterized in that the forced ventilation is set so that the passage of air through the seal sealed with the sealing strip according to DIN 18542 maximum 100 liters per meter joint length and hour extrapolated to 10 Pa pressure difference, preferably a maximum of 90 Liters per meter joint length and hour extrapolated to 10 Pa pressure difference. Building according to one of claims 1 to 5, characterized in that the forced ventilation is set or adjustable so that in the forced-ventilated space a negative pressure of at least 1 Pa and / or of at most 8 Pa is present. Building according to one of claims 1 to 5, characterized in that the forced ventilation is set so that the passage of air through the seal sealed with the sealing strip according to DIN 18542 at least 1-2 liters per Meter joint length and hour extrapolated to 10 Pa pressure difference. Building according to one of claims 1 to 6, characterized in that the sealing strip in the joint has a watertightness of ≥ 600 Pa. Building according to one of claims 1 to 7, characterized in that the outer space side, an increased vapor barrier effect causing sealing strip area increases the rain-tightness of the outside narrow side by at least 50-100 Pa compared to the space inside narrow side. Building according to one of claims 1 to 8, characterized in that the higher vapor barrier effect _is defined by a water vapor diffusion resistance value (S _d ) which is 1.5 to 500 times, preferably 2 to 150 times the water vapor diffusion resistance value of the S _d Value of the opposite narrow side area is. Building according to one of claims 1 to 9, characterized in that the Sd value of the sealing band narrow side with a higher vapor barrier effect is in the range of 0.5 to 50 m. Building according to one of claims 1 to 10, characterized in that the sealing tape area with lower WDD resistance by ≥ 20% higher air permeability than the range with higher WDD resistance, determined according to DIN EN 1026. Building according to one of claims 1 to 11, characterized in that the foam in the narrow side region, which has the higher vapor barrier effect, has an increased material density, which extends across the width of the strip from that of the interior of the room Narrow side increases to the room outside facing narrow side. Building according to claim 12, characterized (i) that the increased material density is produced by an accumulation of material, or (ii) that the higher material density is effected by another material having a higher specific density relative to the foam material in the relaxed state of the sealing strip, wherein the further material in the form of an additional strip extends over the entire length of the strip and preferably completely or partially over the same Height, preferably in a range of height (h), which is smaller than the thickness (a) of the strip of compressible and resilient foam, or (iii) that the higher density of material is effected by another material which is a closed-cell foam and / or a solid strip. Building according to claim 13, characterized in that the material accumulation of the foam material of the body in the region of the outside narrow side based on the foam weight of the mounted sealing strip is higher by more than a factor of 1.5 than on the space inside sealing band narrow side. Building according to one of claims 1 to 14, characterized (i) that the higher vapor barrier effect is produced by a coating in the narrow side region, which has the higher vapor barrier effect, or by a film covering the outside of the sealing strip narrow side, or (ii) that the higher vapor barrier effect is achieved by a film or coating layer arranged in a cut or cut through the cross-sectional area of the sealing strip. Building according to one of claims 1 to 15, characterized in that the seal tape in installation position, the ratio of the degree of compression, as a percentage compression in mounting position with respect to the completely free relaxed initial state of the space inside arranged sealing tape section to the space outside arranged sealing tape section ≥ 1.5 is. Building according to one of claims 1 to 16, characterized in that the sealing strip has an air permeability of 10 to 1000 l / m ² s, according to DIN EN ISO 9237.

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