CH716563A1 - Sealing strips for sealing joints, preferably in the construction sector, in particular for sealing joints between a window or door and masonry. - Google Patents

Abstract

Sealing strip (1) for sealing joints (7), preferably in the construction sector, in particular for sealing joints between windows or doors (9) and masonry (8), with an elongated and preferably wedge-shaped base body (11), which is preferably formed by two mutually symmetrical cheek sides (111, 111 ') and at least one end face (112) are delimited and made of a deformable material, preferably a foam. According to the invention, the sealing strip (1) comprises at least one structural element (12), which preferably extends over the major part of the length of the sealing strip (1) and is arranged at least partially in the base body (11), made of a dimensionally stable material, through which the sealing strip (1) can be mechanically acted upon and can be pressed into the joint (7). The base body (11) is displaceable or compressible along the length of the sealing strip (1) relative to the structural element (12) in such a way that the structural element (12) can be partially guided out of the base body (11) in the longitudinal direction.

Description

description

The invention relates to an elongated and preferably wedge-shaped sealing strip for construction purposes, in particular for sealing joints and gaps when installing windows and doors in the shell and for general joints.

For the energetic optimization of buildings, joints, which arise in particular when installing doors and windows between the components, must be sealed by suitable means. The sealing of such joints is also relevant in connection with the undesired penetration of wind, precipitation and moisture. In addition, the sealing of joints can be important for reasons of fire protection, soundproofing or protection against moisture.

For this purpose, various pre-compressed sealing tapes are known from the prior art. These sealing tapes have an elastic foam strip which is pre-compressed in such a way that it expands slowly after it has been unrolled. On one side of the foam strip there is an adhesive layer with which the sealing tape can be glued to a component. The disadvantage of these pre-compressed sealing tapes is that the rate of expansion of the foam strip depends on the ambient temperature. This leads to problems during installation, since the expansion takes place so quickly at warm temperatures that the time to install the window or door is too short after the sealing tape has been affixed. The craftsman has to hurry after applying the sealing tape, which greatly increases the error rate. In addition, when the window or door is installed, the partially decompressed foam strip can transfer the load. At low temperatures, the strongly delayed recovery leads to a delay in sealing. In addition, pre-compressed sealing tapes are only suitable for a limited range of joint widths. For this reason, several dimensions of pre-compressed sealing tape must always be kept in stock on a construction site. This leads to increased space and material requirements and increases the risk that an unsuitable sealing tape will be selected for a given joint. Another disadvantage is that the sealing properties of the foam with respect to the wall are only limited, since the seal is based only on the expansion of the foam and the associated pressure against the wall.

A resilient sealing tape is known from EP 1959 064 A1. The elastically resilient sealing tape has an elastically resilient foam strip which is held in a compressed state by a detachable seam made of at least one thread. The foam strip is inserted into the joint to be sealed and the foam strip is released by loosening the seam. The seam can be unintentionally loosened when it is inserted and the foam strip can slip when loosening the seam, which has a negative effect on the seal.

From DE 296 13 232 U1 a ready-made wedge-shaped sealing strand for construction purposes is known. The sealing strand made of a flexible plastic material can be pressed into the area to be sealed. The disadvantage here is that the sealing strand can only be pressed into tight joints with difficulty due to the flexible plastic material.

A particular challenge in the sealing of joints are corners, non-straight joint courses and joint transitions. While a given sealant can provide good sealing properties for uniform and linear joints, it is necessary to maintain the sealing properties in the aforementioned complex sealing situations a high installation effort is necessary. Small errors during installation can seriously impair the sealing effect.

The present invention is therefore based on the object of creating an improved sealing element with which joints in structures, in particular joints between windows and doors and the adjacent masonry, can be sealed quickly, permanently and reliably.

In particular, the sealing element should be applicable to materials commonly used in the construction sector, such as masonry, concrete, wood, plastic or metal, and should have good adhesive and sealing properties thereon.

Furthermore, the sealing element should be suitable for sealing joints in various areas of application and of different widths and uneven or uneven surfaces.

In addition, the sealing element should be able to be optimized for specific technical and aesthetic requirements without restrictions in the density function.

Furthermore, the sealing element should allow a simple and reliable sealing of joints in the area of corners and joint transitions.

This object is achieved with a sealing strip which has the features specified in claim 1. Advantageous embodiments of the invention are specified in further claims.

In addition, the invention relates to the use of the sealing strip according to the invention for sealing a joint between a masonry and a window or a door.

The sealing strip, which is suitable for sealing joints, preferably in the construction sector, in particular for sealing joints between windows or doors and masonry, has an elongated and preferably wedge-shaped base body, which is formed by two, preferably mutually symmetrical, cheek sides and is limited by at least one end face and which is made of a deformable material, preferably a foam.

The deformable base body enables optimal adaptation and thus optimized sealing against uneven surfaces and different joint widths.

According to the invention, the sealing strip comprises at least one structural element which preferably extends over the major part of the length of the sealing strip and is at least partially arranged in the base body. Due to the structural element made of a dimensionally stable material, the sealing strip can be acted upon mechanically and pressed into the joint between the window or door and the masonry. The structural element can be arranged in the base body or partially in the base body. The base body is displaceable or compressible along the length of the sealing strip relative to the structural element in such a way that the structural element can be partially guided out of the base body in the longitudinal direction. Due to its dimensional stability, the structural element can absorb mechanical loads well, in contrast to the deformable base body. This makes it easier to insert the sealing strip into a joint and accelerates the insertion process. In addition, the sealing strip can be inserted precisely along the depth of the joint. In joint areas where the dimensional stability of the structural element is not necessary or disturbing, the structural element can be partially removed, whereby the base body regains its original deformability in the longitudinal direction, whereby the sealing effect is optimized in this area. For this purpose, the base body is displaced or compressed along the structural element along the length of the sealing strip in such a way that the structural element partially protrudes from the base body in the longitudinal direction. The protruding section of the structural element can be completely or partially severed or cut off. The base body is then moved back into its original position, creating a section without a structural element. This section is particularly suitable for sealing corners.

In a preferred embodiment, the structural element can be cut or broken off or has predetermined breaking points. The structural element protruding from the base body can thus be easily shortened, which enables rapid processing.

In a further preferred embodiment, the structural element and the base body are glued, glued or mechanically connected to one another only at certain points. The punctiform connections are designed in such a way that they can be broken or released along the longitudinal direction by pressure on the base body, so that the base body can be displaced or compressed with respect to the structural element. The structural element is anchored in the base body through the point connection and cannot fall out unintentionally. At the same time, the base body can easily be pushed back or compressed along the structural element.

In a particularly preferred embodiment, on at least one side of the cheek, particularly preferably on both sides of the cheek, in each case an adhesive layer, which preferably extends along the entire sealing strip, is arranged. The adhesive layer can partially or completely cover one or both sides of the cheek. The adhesive layer can be applied with or without an associated thread fabric or longitudinal reinforcement. The adhesive layer is used for optimal and double-sided adhesion of the sealing strip, for example to the masonry and the window or door. In a preferred embodiment, the cheek sides of the base body are at least partially covered by a film strip. The film strip reduces the friction between the sealing strip and window or door and masonry. This makes it easier to insert the sealing strip into the joint.

In a further preferred embodiment, a protrusion is formed on the film strip, which at least partially covers the adhesive layer, optionally the protective film arranged on the adhesive layer. This prevents the adhesive layer, possibly the protective film arranged thereon, from being accidentally torn off or torn open while the sealing strip is being inserted into the joint.

In a further preferred embodiment, the base body has a skin-like layer along the cheek sides, which facilitates the introduction of the sealing strip into the joint. The skin-like layer is preferably embodied by a skin-forming foam, particularly preferably the foam of the base body.

In a particularly preferred embodiment, the adhesive layers on the cheek sides are covered by a removable protective film, a removable protective layer or a film strip. This prevents sticking before or during the insertion of the sealing strip into the joint. In a further particularly preferred embodiment, film strips each cover the corresponding adhesive layer. In this embodiment, the film strips preferably each have a tear seam, a slit or a perforation, in particular a slit or a perforation, along the base body, so that at least the part of the film strip covering the adhesive layer can be peeled off. Particularly preferably, the film strips covering the cheek sides each have a gripping section which protrudes beyond the cheek sides and at which the part of the film strip that is to be pulled off can be easily gripped. A tear seam with a thread can be formed, for example, as described in EP 1 959 064 A1. The known adhesives are suitable as adhesives, for example adhesives based on methacrylate, as described in DE 296 13 232 U1. The protective film is preferably a siliconized film. The film strip or strips can consist of the same material as the protective film. The film strip or strips can additionally function as the protective film. An example is shown in Figure 1d.

In a particularly preferred embodiment, the end face of the base body of the sealing strip has a cross section in the shape of a segment of a circle or an ellipse segment or a cross section that is convex with respect to the sides of the cheek. This shape enables optimal contact with any subsequent sealing joint. In a preferred

Embodiment, the end face is covered by a cover strip, coating or skin-forming layer and / or painted in color. This makes it possible to adapt to additional aesthetic and / or technical conditions, such as increased weather resistance or fire resistance for a desired application.

The end face of the base body, optionally the cover strip, is preferably driving rain-tight or airtight in accordance with DIN 18542 / EN1027. In the present case, driving rain-tight means tight, in particular against a pressure of more than 600 Pa.

In a particularly preferred embodiment, the sealing strip can be rolled up. As a result, the elongated sealing strip can be transported and stored in a space-saving manner. The base body is preferably compressed in width, which also enables space-saving transport and storage.

According to the invention, the base body is made of a deformable material and the structural element is made of a more dimensionally stable material. The terms “deformable” and “dimensionally stable” are used here as they are usually understood by the person skilled in the art. The base body and the structural element are made of different materials, the material of the base body being more deformable than the material of the structural element.

The base body is preferably made of a foam, rubber (caoutchouc), silicone or a combination thereof. The foams used are preferably soft open-, partially open- or closed-cell foams, in particular based on polyolefin, PVC, rubber, EPDM or polyurethane (PU) or combinations thereof. Silicone foams can also be used. Polypropylene (PP), polyethylene (PE), or PVC foams, or combinations thereof, are particularly suitable. The foam material is preferably not impregnated. Particularly suitable rubber materials are elastomers such as natural, isoprene, styrene-butadiene rubbers, or combinations thereof. Common silicones are suitable as silicone materials.

The structural element or elements are preferably made of a hard foam, cardboard, plastic, metal, wood, a scrim, a plastic fabric or a combination thereof. Plastics used with preference are polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide or polycarbonate. A scrim or plastic fabric can be coated with an epoxy resin in order to obtain or increase the desired dimensional stability.

Sealing strips according to the invention are preferably suitable for sealing joints with joint widths between 3mm and 200mm, preferably 3mm and 150mm, more preferably 3mm and 100mm, and most preferably between 4mm and 60mm. A single sealing strip or at least a small number of differently dimensioned sealing strips can preferably be used for different joint widths, which reduces the space and storage requirements on a construction site. The sealing strip preferably has a dimension of 4 to 300 mm (width). In particular, the sealing strip has a width of 6 to 250 mm, preferably 10 to 250 mm or 20 to 250 mm.

The volume of the structural element is preferably a maximum of 20%, more preferably a maximum of 12%, particularly preferably a maximum of 7% of the volume of the base body. This enables good mechanical stability with simultaneous optimal adaptation to a joint by the sealing strip.

In a further preferred embodiment, the base body is made from an open-cell foam material.

The structural element is preferably made of a material with a higher density than the base body. The density of the structural element is particularly preferably at least one and a half times, preferably at least twice, more preferably at least three times the density of the base body (according to DIN EN ISO 845).

In a further preferred embodiment, the structural element has a tensile strength of at least 20N. This ensures sufficient mechanical dimensional stability of the structural element when it is pressed in. A test specimen 2 mm thick, 30 mm wide and 200 mm long is used to determine the tensile strength. The measuring speed is 100 mm / min. Prior to the tensile test, the test specimens are conditioned for at least 20 hours at a temperature of 23 ° C and a relative humidity of 30% to 70%.

In a preferred embodiment, a sealing profile is arranged on the end face. The sealing profile can be glued to the base body. The sealing profile is preferably made of an adaptable material, so that the joint is closed in a visually appealing and flush manner after the sealing strip has been pressed in by the sealing profile.

The structural element has a shape which enables the structural element to be pressed into the joint to be sealed. Suitable shapes are, for example, elongated or oval shapes. An elongated shape of the structural element is particularly preferred. In a preferred embodiment, the structural element is designed as an elongated and flexible strip. For improved flexibility, the structural element preferably has tapers or holes or recesses along the sealing strip. The term “flexible” denotes the stability of the structural element in the longitudinal direction of the sealing strip. An example of a more flexible structural element is shown in FIG. 2f.

The production of the sealing strip is not subject to any particular restrictions and is carried out using the methods known to the person skilled in the art. The sealing strip is preferably produced by extrusion, particularly preferably by co-extrusion, lamination or by assembly.

The use of a sealing strip according to the invention for sealing a joint between masonry or woodwork and a window or door is also the subject of this invention.

The invention is explained in more detail below with reference to drawings. In the drawings, the same reference symbols have the same meaning. It shows:

Fig. La

a sealing strip 1 according to the invention in a first embodiment;

Figure 1b

a second embodiment of a sealing strip 1 according to the invention;

Figure 1c

a third embodiment of a sealing strip 1 according to the invention;

Fig. 1d

a fourth embodiment of a sealing strip 1 according to the invention;

Fig. 2a

a fifth embodiment of a sealing strip 1 according to the invention in a cross section;

Figure 2b

a sixth embodiment of a sealing strip 1 according to the invention in a cross section;

Figure 2c

a seventh embodiment of a sealing strip 1 according to the invention in a cross section;

Fig. 2d

an eighth embodiment of a sealing strip 1 according to the invention in a cross section;

Fig. 2e

a ninth embodiment of a sealing strip 1 according to the invention in a cross section;

Fig. 2f

the sealing strip 1 from FIG. 1b in a longitudinal section;

Fig. 3a

a tenth embodiment of a sealing strip 1 according to the invention in a cross section;

Figure 3b

an eleventh embodiment of a sealing strip 1 according to the invention in a cross section;

Figure 3c

a twelfth embodiment of a sealing strip 1 according to the invention in a cross section;

Figs. 3d

a thirteenth embodiment of a sealing strip 1 according to the invention in a cross section;

Figure 4a

the sealing strip 1 from FIG. 1d with gripping sections 143, 143 'formed on the film strips 14, 14'

Figure 4b

the sealing strip 1 from FIG. 4a with a cover strip 15;

Fig. 5

a sealing strip 1 according to the invention in a joint 7;

6a shows a joint 7

between a schematic masonry 8 and a schematic window or door 9 with a sealing strip 1 aligned along it;

FIG. 6b shows the joint 7 from FIG. 6a

while the sealing strip 1 is pressed therein;

FIG. 6c shows the joint 7 from FIG. 6a

with sealing strip 1 pressed into it and protruding gripping section 143, 143 ';

Fig. 6d

the joint 7 sealed with a sealing strip 1 from FIG. 6a;

Figure 7a

a sealing strip 1 according to the invention, in which the base body 11 is acted upon manually along the structural element 12;

Figure 7b

the sealing strip 1 from FIG. 7a with the base body 11 compressed or displaced along the structural element 12 so that the structural element 12 partially protrudes from the base body 11;

Figure 7c

the sealing strip 1 from FIG. 7b, an incision 124 having been cut into the structural element 12 with a cutting tool 6;

Figure 7d

the sealing strip 1 from FIG. 7c after the structural element 12 has been cut along the incision 124;

7e shows the sealing strip 1 from FIG. 7d after the base body 11 has moved back into the starting position

was brought;

8a shows a schematic corner joint 7 in a top view;

8b shows the corner joint 7 from FIG. 8a, which is sealed with two sealing strips 1, 1 ', in a top view;

1 a shows a cross section of a sealing strip 1 according to the invention. The sealing strip 1 consists of a base body 11 which is delimited by two cheek sides 111, 111 ′ and an end face 112. The sealing strip 1 has a wedge-shaped cross section. A structural element 12 is arranged in the base body 11. The coordinate system shown defines the orientation of the terms width (B), length (L) and height / depth (H) used in this application.

FIG. 1b shows a second embodiment of a sealing strip 1 according to the invention. In addition to that shown in FIG.

I a known components, an adhesive layer 13, 13 'is arranged on each of the cheek sides 111, 111'. The adhesive layers 13, 13 'cover the corresponding cheek sides 111, 111' over a large area in each case along the length.

1c shows a third embodiment of a sealing strip 1 according to the invention. The cheek sides 111, 111 'are partially covered by a respective film strip 14, 14'. A protrusion 142, 142 'is formed on each of the film strips 14, 14' and partially covers the adhesive layer 13, 13 '. In the embodiment shown, the structural element 12 has a T-shaped cross section.

1d shows a fourth embodiment of a sealing strip 1 according to the invention. The film strips 14, 14 'are designed in such a way that both the cheek sides 111, 111' and the adhesive layers 13, 13 'arranged thereon are completely covered. A tear seam 141 runs along each of the film strips 14, 14 ', through which the upper part of the film strips 14, 14' can be torn off.

2a shows a fifth embodiment of a sealing strip 1 according to the invention in a cross section. In the embodiment shown, the structural element 12 has a wedge-shaped cross section, analogous to the cross section of the base body 11. The base body 11 is delimited by two cheek sides 111, 11 T and an end side 112. An adhesive layer 13, 13 ′ is arranged on each of the two cheek sides 111, 11 T.

2b shows a sixth embodiment of a sealing strip 1 according to the invention in a cross section. In the embodiment shown, part of the structural element 12 looks out of the base body 11 on the end face 112.

2c shows a seventh embodiment of a sealing strip 1 according to the invention in a cross section. In the embodiment shown, the cheek sides 111, 11T have two differently inclined sections. This simplifies the introduction of the sealing strip 1 into a joint.

2d shows an eighth embodiment of a sealing strip 1 according to the invention in a cross section. In addition to the two cheek sides 111, 111 ′ and the end face 112, the base body 11 is also delimited by a second end face 113.

2e shows a ninth embodiment of a sealing strip 1 according to the invention in a cross section. The cheek sides 111, 111 'are designed to be curved.

FIG. 2f shows the sealing strip 1 from FIG. 1b in a longitudinal section. The structural element 12 extends over the entire length of the sealing strip 1, with tapers 121 being arranged along the structural element 12 for better flexibility.

3a shows a tenth embodiment of a sealing strip 1 according to the invention in a cross section. The base body 11 is wedge-shaped. A structural element 12 is arranged in the base body 11. An adhesive layer 13, 13 'is arranged on each of the two cheek sides 111, 111'. The end face 112 is designed to be concave with respect to the base body 11.

3b shows an eleventh embodiment of a sealing strip 1 according to the invention in a cross section. In the embodiment shown, a structural element 12 is arranged within the base body 11. The base body 11 is delimited by two cheek sides 111, 11 T and an end face 112. An adhesive layer 13, 13 ′ is arranged on each of the two cheek sides 111, 11 T. A sealing profile 16 is arranged on the end face 112 for lateral sealing against the masonry and the door or window.

3c shows a twelfth embodiment of a sealing strip 1 according to the invention in a cross section. Two structural elements 12, 12 ′ are arranged in the base body 11. The base body 11 is delimited by two cheek sides 111, 111 ′ and an end face 112. An adhesive layer 13, 13 'is arranged on each of the two cheek sides 111, 111'.

FIG. 3d shows a thirteenth embodiment of a sealing strip 1 according to the invention in a cross section. The base body 11 is wedge-shaped, the cheek side 111 and the end face 112 being aligned approximately perpendicular to one another. A structural element 12 is arranged in the base body 11. On both sides of the cheek 111,

I1 T an adhesive layer 13, 13 'is arranged in each case.

4a shows the sealing strip 1 from FIG. 1d with gripping sections 143, 143 'formed on the film strips 14, 14'. The film strip 14, 14 'can be easily grasped by hand at the gripping sections 143, 143', so that it can be peeled off along the tear seam 141, whereby the adhesive layer 13, 13 'is exposed.

4b shows the sealing strip 1 from FIG. 4a with a cover strip 15. The cover strip 15 can have an aesthetic or technical function.

5 shows a sealing strip 1 according to the invention in a joint 7. The base body 11 is at least partially compressed in its width, whereby the cheek sides 111, 111 ′ are at least partially pressed against the masonry 8 and the window or door 9. The adhesive layers 13, 13 'stick to the masonry 8 and the window or door 9, whereby the sealing and adhesion of the sealing strip 1 is improved.

6a to 6d illustrate the method for sealing a joint 7 with a sealing strip 1 according to the invention.

6a shows a joint 7 between a schematic masonry 8 and a schematic window or door 9 with a sealing strip 1 aligned along it.

FIG. 6b shows the joint 7 from FIG. 6a while the sealing strip 1 is pressed into it. A force is exerted on the structural element 12 by mechanical loading, as a result of which the sealing strip 1 is pressed into the joint 7. The film strips 14, 14 ′ reduce the frictional forces between the base body 11 and the masonry 8 and the window or door 9.

FIG. 6c shows the joint 7 from FIG. 6a with the sealing strip 1 pressed into it and protruding gripping section 143, 143 '. After the pressing in, preferably only the gripping sections 143, 143 'protrude from the joint 7. The gripping sections 143, 143' are gripped by hand and the corresponding film strip 14, 14 'is at least partially removed.

FIG. 6d shows the joint 7 from FIG. 6a sealed with a sealing strip 1. By peeling off the film strips 14, 14 ', the adhesive layers 13, 13' are exposed and stick to the masonry 8 and the window or door 9.

7a to 7e illustrate the method for shortening the structural element 12 of a sealing strip 1 according to the invention for improved sealing of corner joints.

7a shows a sealing strip 1 according to the invention, in which the base body 11 is acted upon manually along the structural element 12. At the beginning, the structural element 12 ends at least approximately flush with the base body 11. The base body 11 is acted upon manually in the direction of the structural element 12, as a result of which it is partially compressed or displaced along the structural element.

FIG. 7b shows the sealing strip 1 from FIG. 7a with the base body 11 partially compressed or displaced along the structural element 12, so that the structural element 12 partially protrudes from the base body 11. The base body 11 can be compressed to different degrees, so that different lengths of the structural element 12 can protrude from the base body 11.

FIG. 7c shows the sealing strip 1 from FIG. 7b, an incision 124 being cut into the structural element 12 with a cutting tool 6. The base body 11 is not damaged or cut by the cutting process.

7d shows the sealing strip 1 from FIG. 7c after the structural element 12 has been cut along the incision 124. The base body 11 is still at least partially compressed. The structural element 12 is now shorter than before the shortening in FIG. 7b. Following the cutting process, the base body 11 can be shifted again by hand along the structural element 12 into its starting position.

7e shows the sealing strip 1 from FIG. 7d after the base body 11 has been brought back into the uncompressed starting position from FIG. 7a. The transfer of the base body 11 from the compressed position to the starting position can be achieved either by sliding it along the structural element 12 or by elastic relaxation due to the elasticity of the material of the base body 11. An empty opening 119 now remains where the structural element 12 was visible on the base body 11 in FIG. 7a. The shortened structural element 12 is arranged set back in the base body 11 (not visible).

8a shows a schematic corner joint 7 in a top view. The corner joint 7 is delimited by masonry 8 and a window 9.

FIG. 8b shows the corner joint 7 from FIG. 8a sealed with two sealing strips 1, T in a top view. In the case of both sealing strips 1 and 1 ', the respective structural element 12 was shortened in the end region adjoining the corner joint 7 according to the method from FIGS. 7a to 7e. The corner area is only sealed by the base body 11 of the respective sealing strips 1 and T, whereby the sealing effect is improved. The base bodies 11 of the sealing strips 1 and 11 are compressed in the longitudinal direction in the area without a structural element 12, so that they exert a force along the arrows. In this way, a good pressing action against the wall 8 in the corner area and against the adjacent sealing strip 1 is achieved.

Claims (13)

Any combination of the embodiments of the sealing strip described in the figures and the description is also in accordance with the invention. In particular, individual features of the configurations described can be combined with one another according to the invention. The sealing strip according to the invention is not only suitable for sealing joints in the construction sector, but is also suitable for joints in mechanical engineering, the automotive sector or other areas. LIST OF REFERENCE NUMERALS Sealing strip base body 111,111 'cheek side end face second end face empty opening 12,12' structural element tapering incision 13, 13 'adhesive layer 14, 14' foil strip tear seam 142,142 'protrusion 143, 143' gripping section cover strip sealing profile cutting tool joint, corner joint masonry window or door FB Joint width H height / depth B width L length Claims 1. Sealing strip (1) for sealing joints (7), preferably in the construction sector, in particular for sealing joints between windows or doors (9) and masonry (8), with an elongated and preferably wedge-shaped base body (11) which passes through two preferably symmetrical cheek sides (111, 11T) and at least one end face (112) is limited and made of a deformable material, preferably a foam, characterized in that the sealing strip (1) extends at least one preferably over the majority of the length of the Sealing strip (1) extending and at least partially in the base body (11) arranged structural element (12) made of a dimensionally stable material, through which the sealing strip (1) can be mechanically acted upon and pressed into the joint (7) and that the base body (11) along the length of the sealing strip (1) relative to the structural element (12) is so displaceable or compressible that the structural element (12) in Lä ngsrichtung can be partially guided out of the base body (11). 2. Sealing strip (1) according to claim 1, characterized in that the structural element (12) can be cut or broken off or has predetermined breaking points. 3. Sealing strip (1) according to claim 1 or 2, characterized in that the structural element (12) and the base body (11) are glued to one another only at certain points or mechanically connected to one another, the selective connection being designed so that it is pressurized The base body (11) can be broken open along the longitudinal direction, so that the base body (11) can be displaced or compressed relative to the structural element (12). 4. Sealing strip (1) according to claim 1, 2 or 3, characterized in that an adhesive layer (13, 13 ') is arranged on at least one cheek side (111, 111'), preferably on both cheek sides (111, 11T), and / or that the cheek sides (111, 111 ') are at least partially covered by a film strip (14, 14'). 5. Sealing strip (1) according to claim 4, characterized in that a protrusion (142, 142 ') which at least partially covers the adhesive layer (13, 13') is formed on the film strip (14, 14 '), or that on the film strip (14, 14 ') a gripping section (143, 143') protruding beyond the cheek sides (111, 11 T) is formed. 6. Sealing strip (1) according to one of claims 4 or 5, characterized in that the adhesive layers (13, 13 ') are covered by a removable protective film or a removable protective layer or that the film strip (14, 14') the adhesive layers (13 , 13 ') to prevent unwanted sticking. 7. Sealing strip (1) according to one of claims 1 to 6, characterized in that the end face (112) preferably has a circular segment-shaped or elliptical segment-shaped cross section and / or is at least partially covered by a cover strip (15) and / or that the end face ( 112) is painted in color and / or that a sealing profile (16) is arranged on the end face (112). 8. Sealing strip (1) according to one of claims 1 to 7, characterized in that the sealing strip (1) can be rolled up, wherein the base body (11) is preferably compressed in width. 9. Sealing strip (1) according to one of claims 1 to 8, characterized in that the structural element (12) is made of a hard foam, cardboard, plastic, metal, a scrim, a plastic fabric or a combination thereof and / or that the base body (11) is made of soft foam, rubber, silicone, or a combination thereof. 10. Sealing strip (1) according to one of claims 1 to 9, characterized in that the sealing strip for sealing joints (7) with joint widths (FB) between 3mm and 200mm, preferably 3mm and 150mm, more preferably 3mm and 100mm, and most preferably between 4mm and 60mm, is suitable. 11. Sealing strip (1) according to one of claims 1 to 10, characterized in that the volume of the structural element (12) is a maximum of 20%, preferably a maximum of 12%, particularly preferably a maximum of 7% of the volume of the base body (11). 12. Sealing strip (1) according to one of claims 1 to 11, characterized in that the sealing strip (1) is produced by extrusion, preferably by co-extrusion or by assembly. 13. Use of a sealing strip (1) according to one of claims 1 to 12 for sealing a joint (7) between a masonry (8) and a window or a door (9).