Sealing strip

Description

[0001] The invention relates to an elongated sealing strip for construction purposes, in particular for sealing joints and gaps when installing windows and doors in the shell of a building, as well as for general joints.

[0002] To optimize the energy efficiency of buildings, joints, which occur particularly during the installation of doors and windows between building components, must be sealed using suitable materials. Sealing such joints is also important to prevent the unwanted ingress of wind, rain, and moisture. Furthermore, sealing joints can be crucial for fire protection, sound insulation, or protection against moisture.

[0003] For this purpose, various pre-compressed and usually impregnated sealing tapes are known from the prior art. These sealing tapes have an elastic foam strip that is pre-compressed so that it expands slowly after being unrolled. The foam strip is generally made of polyurethane. An adhesive layer is applied to one side of the foam strip, allowing the sealing tape to be bonded to a component. A disadvantage of these pre-compressed sealing tapes is that the expansion rate of the foam strip depends on the ambient temperature. This leads to problems during installation, as the expansion occurs so rapidly at warm temperatures that there is insufficient time to install the window or door after the sealing tape has been applied. The installer must work quickly after applying the sealing tape, which significantly increases the error rate.Furthermore, during the installation of windows or doors, the partially decompressed foam strip can bear a load. At low temperatures, the significantly delayed recovery leads to a delay in sealing. Additionally, pre-compressed sealing tapes are only suitable for a limited range of joint widths. Therefore, several dimensions of pre-compressed sealing tapes must always be kept in stock on a construction site. This increases the space and material requirements and raises the risk of selecting an unsuitable sealing tape for a given joint. Another disadvantage is that the foam's sealing properties against the wall are limited, as the seal relies solely on the expansion of the foam and the resulting pressure against the wall.

[0004] A resilient sealing tape is known from EP 1 959 064 A1. This elastically resilient sealing tape comprises an elastically resilient foam strip held in a compressed state by a releasable seam made of at least one thread. The foam strip is inserted into the joint to be sealed, and releasing the seam triggers the foam strip's return to its original shape. The seam can be unintentionally released during insertion, and the foam strip can slip when the seam is released, negatively impacting the seal.

[0005] From DE 296 13 232 U1, a prefabricated wedge-shaped sealing strip for construction purposes is known. The sealing strip, made of a flexible plastic material, can be pressed into the area to be sealed. A disadvantage is that, due to the flexible plastic material, the sealing strip is difficult to press into narrow joints.

[0006] US 10 286 624 B2 relates to a sealing tape roll made of flexible, compressible foam with at least one barrier layer extending in a radial direction.

[0007] CA 3 093 870 A1 relates to a sealing strip for sealing joints, preferably in the construction sector. The sealing strip has a wedge-shaped base body in which an extending structural element is arranged.

[0008] The present invention is therefore based on the objective of creating an improved sealing element with which joints in buildings, in particular joints between windows and doors and the adjacent masonry, can be sealed quickly, for a long time and reliably.

[0009] In particular, the sealing element should be applicable to materials commonly used in construction, such as masonry, concrete, wood, plastic or metal, and exhibit good adhesion and sealing properties on these materials.

[0010] Furthermore, the sealing element should be suitable for sealing joints in various applications and of different widths and uneven or irregular surfaces.

[0011] Furthermore, the sealing element should allow a joint to be sealed quickly and reliably, regardless of the ambient temperature.

[0012] Furthermore, the sealing element should seal a joint against both sides forming the joint with at least approximately the same quality.

[0013] This problem is solved with a sealing strip having the features specified in claim 1. Advantageous embodiments of the invention are described in further claims, the following description, and the figures.

[0014] The sealing strip, suitable for sealing joints, preferably in construction, and in particular for sealing joints between windows or doors and masonry, has an elongated base body bounded by a first side face on which an adhesive layer is applied, a second side face, which is preferably symmetrical to the first side face and on which an adhesive layer is applied, a first end face, and a second end face. The base body is made of a deformable material, preferably a foam. The deformable base body allows for optimal adaptation and thus optimized sealing against uneven surfaces and varying joint widths.

[0015] According to the invention, the base body is made of a thermoplastic foam material, exhibiting a compression hardness at 50% compression (according to DIN ISO 3386-01) of a maximum of 30 kPa, preferably a maximum of 15 kPa, and most preferably a maximum of 7 kPa. The sealing strip is thus highly compressible, which facilitates the installation of a window in masonry equipped with a sealing strip. At the same time, the sealing strip is stable enough to ensure sufficient mechanical stress on the adjacent building components, so that the component transitions are airtight. The sealing strip is torsionally stable, so that unwanted twisting along the axis of the sealing strip is prevented or at least significantly reduced during application. This prevents the adhesive layers from bonding in a twisted position of the sealing strip. This simplifies the handling of the sealing strip and accelerates the sealing process.Furthermore, the quality and uniformity of the bond are improved. In addition, the sealing strip can be precisely positioned and bonded along the entire depth of the joint. Thermoplastic materials also offer advantageous properties for the construction industry with regard to aging, media resistance, and material compatibility.

[0016] The base body is made of a thermoplastic foam material. Preferably, soft open-cell, semi-open-cell, or closed-cell foams are used, particularly those based on polyolefin, PVC, or polystyrene, or combinations thereof. Ethylene butylacrylate-based polymer material and / or ethylene vinyl acrylate-based polymer material are especially suitable. The foam material is preferably not impregnated. The selection of suitable foam materials possessing the compression hardness required according to the invention is within the scope of expert knowledge. Preferably, the foam material is not based on polyurethane, and in particular not on thermoplastic polyurethane.

[0017] In a preferred embodiment, the first cheek side is at least partially covered by a strip of film covering the adhesive layer to prevent unintentional adhesion. Particularly preferably, the second cheek side is also at least partially covered by a strip of film covering the adhesive layer to prevent unintentional adhesion. The film strip is preferably easily removable by hand, exposing the adhesive layer so that it can be bonded to the window, door, or masonry.

[0018] In a further preferred embodiment, an overhang extending beyond the sides of the foil strip is formed on the foil strip. This makes it easier to peel off the foil strip.

[0019] The average cell size of the foam material is preferably 0.6 mm to 1.5 mm, more preferably 0.9 mm to 1.5 mm. The average cell size is defined here as the diameter of a sphere with the same volume as the average cell.

[0020] Suitable adhesives include known adhesives, for example methacrylate-based adhesives as described in DE 296 13 232 U1. The film strip covering the adhesive layer is preferably a siliconized film.

[0021] According to the invention, the base body is made of a closed-cell extruded foam material, which is made at least approximately open-cell by a mechanical post-treatment. This post-treatment can be carried out, for example, by puncturing with one or more needles, thereby piercing a large proportion of the closed cells and thus making them open-cell. A corresponding method for mechanical post-treatment is described in BE 1026558. Materials and manufacturing processes that result in a closed-cell foam material can thus be made open-cell, and the material properties can be optimized for the application.

[0022] According to the invention, 70 to 99%, more preferably 80 to 99%, and particularly preferably 91% to 99% of the cells are made open-cell by mechanical post-treatment. The foam material is thus highly compressible and simultaneously airtight and resistant to driving rain.

[0023] The base body is preferably made of an ethylene-butyl acrylate-based polymer material and / or an ethylene-vinyl acrylate-based polymer material. In a preferred embodiment, the base body is made of a cross-linked polymer material. The sealing strip thus exhibits aging resistance suitable for the construction industry.

[0024] In a particularly preferred embodiment, the compression hardness of the base body decreases with increasing open-cell structure of the thermoplastic foam material and can thus be adjusted to the specific application range by varying the degree of open-cell structure. Preferably, the compression hardness of the base body also decreases with decreasing density of the thermoplastic foam material. The application-specific compression hardness can therefore be optimized by adjusting the density of the thermoplastic foam material. More preferably, the compression hardness of the base body decreases with increasing cell size of the thermoplastic foam material, which allows the compression hardness to be further optimized while maintaining the same polymer material.In preferred embodiments, a decrease in the compression hardness of the base body can be achieved by at least one of the following features: by increasing the open-cell structure of the thermoplastic foam material; by decreasing the density of the thermoplastic foam material; or by increasing the cell size of the thermoplastic foam material.

[0025] In a particularly preferred embodiment, the sealing strip is designed to be rolled up. This allows the elongated sealing strip to be transported and stored in a space-saving manner.

[0026] The sealing strip is preferably rollable in such a way that the same strip of film covers both the adhesive layer on the first cheek side and the adhesive layer on the second cheek side on each side, preventing them from sticking together. Both adhesive layers can thus be covered with just a single strip of film.

[0027] In a particularly preferred embodiment, the base body has a stiffening zone which exhibits increased compression strength (according to DIN ISO 3386-01) compared to the rest of the base body. This property is preferably achieved by the stiffening zone having a lower proportion of open-cell foam cells compared to the rest of the base body. This is preferably achieved by applying less mechanical post-treatment to the stiffening zone compared to the rest of the base body. The stiffening zone improves the mechanical properties of the base body and allows for customization.

[0028] In a particularly preferred embodiment, the first end face and / or the second end face are convex with respect to the base body. This convex shape increases the torsional stability of the sealing strip, thus preventing or at least significantly reducing unwanted twisting along the strip's axis during application. This prevents the adhesive layers from bonding in a twisted position of the sealing strip. This facilitates the application of the sealing strip and accelerates the sealing process. Furthermore, the quality and uniformity of the bond are improved. In addition, the sealing strip can be bonded with precise positioning along the entire depth of the joint.

[0029] Preferably, the first cheek side and / or the second cheek side are designed to be concave with respect to the base body. Due to the concave design, the adhesive layers arranged on the cheek sides do not come into contact with the building structure upon initial contact of the cheek sides, thus preventing or at least reducing unwanted adhesion.

[0030] In the context of the present invention, concave means that one side is curved inwards relative to the base body. In addition to the examples shown in the present invention, the term concave also includes, for the purposes of the present invention, the following: Fig. 2f und 2h The concave shape shown also includes an indentation, one or more grooves, a depression, or a milled structure. For the purposes of the present invention, convex means that one side is curved outwards relative to the base body.

[0031] In a particularly preferred embodiment, the first end face of the base body of the sealing strip has a cross-section that is at least approximately circular or elliptical segment-shaped. Preferably, the second end face of the base body of the sealing strip also has a cross-section that is at least approximately circular or elliptical segment-shaped. In a particularly preferred embodiment, the first and second end faces are designed to be mirror images of each other.

[0032] It is particularly advantageous for the first and second adhesive layers to contain different adhesives. This allows the adhesive properties to be tailored to the specific materials of the components.

[0033] Suitable adhesives include known adhesives, such as methacrylate-based adhesives as described in DE 296 13 232 U1. A polyolefin-based hot melt adhesive is particularly suitable as a low-tack adhesive. A rubber-based pressure-sensitive hot melt adhesive is particularly suitable as a high-tack adhesive. The film strip covering the adhesive layer is preferably a siliconized film.

[0034] The first adhesive layer preferably comprises a high-tack adhesive. The second adhesive layer preferably comprises a low-tack adhesive. In a preferred embodiment, the tack of the first adhesive layer (loop tack according to FINAT 9) is at least three times, preferably at least five times, and particularly preferably at least ten times, the tack of the second adhesive layer (loop tack according to FINAT 9).

[0035] Preferably, the first adhesive layer comprises two parallel, elongated adhesive strips separated from each other by an intermediate zone not covered with adhesive. This allows the film strip to be easily removed from the adhesive layer.

[0036] The second adhesive layer preferably covers only the central part of the second cheek side.

[0037] The sealing strips according to the invention are preferably suitable for sealing joints with widths between 3 mm and 200 mm, more preferably between 3 mm and 150 mm, even more preferably between 3 mm and 100 mm, and most preferably between 4 mm and 60 mm. For different joint widths, preferably a single sealing strip or at least a small number of differently dimensioned sealing strips can be used, which reduces the space and storage requirements on a construction site. The sealing strip preferably has dimensions of 5 to 400 mm in width and / or height. Before installation, the length of the sealing strip is preferably several meters, and the sealing strip can be easily cut to any required length.

[0038] The first end face of the base body and / or the second end face of the base body is preferably rainproof or airtight according to DIN 18542 / EN1027. In a preferred embodiment, the base body is rainproof or airtight according to DIN 18542 / EN1027. Rainproof in this context means, in particular, airtight against a pressure of more than 600 Pa.

[0039] In a further preferred embodiment, the width of the base body is at least one and a half times, preferably at least twice, and more preferably at least two and a half times the height of the base body. Here, the width denotes the distance between the first and second cheek surfaces. The height denotes the distance between the first and second end faces.

[0040] In a particularly preferred embodiment, the base body has a compression hardness at 50% compression of a maximum of 30 kPa, preferably a maximum of 15 kPa, and particularly preferably a maximum of 7 kPa. Preferred ranges for the compression hardness at 50% compression are from 0.5 kPa to 30 kPa, particularly from 1 kPa to 30 kPa. The compression hardness at 50% compression as defined in the present invention refers to a determination according to DIN ISO 3386-01.

[0041] The base body preferably has a density of at most 50kg / m 3< , particularly preferably at most 30kg / m 3< .

[0042] The production of the sealing strip is not subject to any special restrictions and is carried out using methods known to those skilled in the art.

[0043] Preferably, the sealing strip is produced by extrusion, particularly preferably by co-extrusion, lamination or by assembly.

[0044] The use of a sealing strip according to the invention for sealing a joint between a masonry or timber structure and a window or door is also the subject of this invention.

[0045] The invention is explained in more detail below with reference to the drawings. These show: Fig. 1a the base body 11 of a sealing strip according to the invention in a first embodiment; Fig. 1b a sealing strip 1 according to the invention with the base body made of Fig. 1a ; Fig. 2a the sealing strip 1 from Fig. 1b in a cross-section; Fig. 2b a second embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2c a third embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2d a fourth embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2e a fifth embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2f a sixth embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2g a seventh embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 2h an eighth embodiment of a sealing strip 1 according to the invention in a cross-section; Fig. 3a the sealing strip 1 from Fig. 1b with adhesive layer 13 covered by a foil strip 14; Fig. 3b a ninth embodiment of a sealing strip 1 according to the invention with a foil strip 14; Fig. 4 a sealing strip 1 according to the invention in a joint 7; Fig. 5a a schematic brickwork 8 and a schematic window or door 9 with a sealing strip 1 aligned along it; Fig. 5b the masonry 8 and the window or door 9 from Fig. 5a with sealing strip 1 glued to the masonry 8; Fig. 5c a joint 7 formed between the masonry 8 and the window or door 9 made of Fig. 5b with a sealing strip 1 that seals the joint; Fig. 6a a corner joint 7 sealed with two sealing strips 1, 1' in a top view; Fig. 6b A corner joint 7 sealed with a sealing strip 1 in a top view.

[0046] Fig. 1a Figure 1 shows the base body 11 of a sealing strip according to the invention in a first embodiment. The base body 11 is bounded by a first cheek side 111, a second cheek side 111', a first end face 112 and a second end face 112'. The coordinate system shown defines the orientation of the terms width (B), length (L) and height / depth (H) used in this application.

[0047] Fig. 1b shows a sealing strip 1 according to the invention with the base body 11 made of Fig. 1a In addition to the ones in Fig. 1a In the components shown, 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 along their length.

[0048] Fig. 2a shows the sealing strip 1 from Fig. 1b in a cross-section. The base body 11 is bounded by two side faces 111, 111' and two end faces 112, 112'. An adhesive layer 13, 13' is arranged on each of the two side faces 111, 111'.

[0049] Fig. 2b Figure 1 shows a second embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, the end faces 112, 112' are longer than the side faces 111, 111'. This allows very wide joints to be sealed.

[0050] Fig. 2c Figure 1 shows a third embodiment of a sealing strip 1 according to the invention in cross-section. The base body 11 is bounded by two side faces 111, 111' and two end faces 112, 112'. An adhesive layer 13, 13' is arranged on each of the two side faces 111, 111'. The two side faces 111, 111' are aligned parallel to each other. In the embodiment shown, the two end faces 112, 112' are each mirror-symmetrical and convex with respect to the base body 11.

[0051] Fig. 2d Figure 1 shows a fourth embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, the end faces 112, 112' each have a triangular shape bounded by two sides.

[0052] Fig. 2e Figure 1 shows a fifth embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, the first end face 112 and the second end face 112' have different cross-sections. Preferably, the end face 112 is convex with respect to the base body 11, and the end face 112' has a triangular shape bounded by two sides.

[0053] Fig. 2f Figure 1 shows a sixth embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, the first cheek side 111 is concave with respect to the base body 11.

[0054] Fig. 2g Figure 1 shows a seventh embodiment of a sealing strip 1 according to the invention in cross-section. The base body 11 is bounded by two side faces 111, 111' and two end faces 112, 112'. An adhesive layer 13, 13' is arranged on each of the two side faces 111, 111'. The two side faces 111, 111' are each concave with respect to the base body 11. The base body 11 has a stiffening zone 11A, which extends from the first end face 112 to the second end face 112'. The stiffening zone 11A is integrated into the base body 11 and transitions seamlessly into it.

[0055] Fig. 2h Figure 1 shows an eighth embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, the end faces 112, 112' are each convex with respect to the base body 11. The two side faces 111, 111' are each concave with respect to the base body 11.

[0056] Fig. 3a shows the sealing strip 1 from Fig. 1b with an adhesive layer 13 covered by a foil strip 14. The base body 11 is bounded by two side faces 111, 111' and two end faces 112, 112'. An adhesive layer 13, 13' is arranged on each of the two side faces 111, 111'. In the embodiment shown, a projection 14A, 14B is formed on both sides of the foil strip 14.

[0057] Fig. 3b Figure 9 shows a ninth embodiment of a sealing strip 1 according to the invention with a foil strip 14. The first end face 112 and the second end face 112' are designed to be convex with respect to the base body 11.

[0058] Fig. 4 Figure 1 shows a sealing strip 1 according to the invention in a joint 7. The base body 11 is at least partially compressed, whereby the cheek sides 111, 111' and the adhesive layers 13, 13' arranged thereon are pressed at least partially against the masonry 8 and the window or door 9. The adhesive layers 13, 13' bond to the masonry 8 and the window or door 9, thereby improving the sealing and adhesion of the sealing strip 1.

[0059] Fig. 5a bis Fig. 5c Illustrate the use according to the invention of a sealing strip 1 according to the invention for sealing a joint 7.

[0060] Fig. 5a Figure 8 shows a schematic brickwork and a schematic window or door 9 with a sealing strip 1 aligned along it.

[0061] Fig. 5b The brickwork 8 and the window or door 9 are shown. Fig. 5a with sealing strip 1 glued to the masonry 8. The foil strip of the sealing strip 1 is opposite the Fig. 5a The adhesive layer 13 bonds the sealing strip 1 to the masonry 8. The base body 11 can be further compressed in its bonded state by pressing it against the masonry 8. The bond between the adhesive layer 13 and the masonry 8 can also be strengthened by pressing.

[0062] Fig. 5c shows a joint 7 formed between the masonry 8 and the window or door 9. Fig. 5b with a sealing strip 1 that seals the joint. The window or door 9 is bonded to the sealing strip 1 via the adhesive layer 13'. The base body 11 is preferably at least partially compressed, so that a restoring and sealing force is exerted from the base body 11 on the masonry 8 and the window or door 9. The sealing effect is further improved by bonding on both sides.

[0063] Fig. 6a Figure 1 shows a corner joint 7 sealed with two sealing strips 1, 1' in a top view. The two sealing strips 1 and 1' have been shortened so that the corner area is sealed by the base bodies 11 of the respective sealing strips 1 and 1'. The sealing strips 1, 1' are each bonded to the masonry 8 and the window or door 9.

[0064] Fig. 6b Figure 1 shows a corner joint 7 sealed with a sealing strip 1 in a top view. The sealing strip 1 is continuously bonded to the window or door 9 along the corner. On the opposite side, the sealing strip 1 is also continuously bonded to the masonry along the corner. The corner area is sealed only by the base body 11. Due to the partially compressed base body, it exerts a force along the arrows. This ensures good contact pressure against the wall 8 in the corner area and the opposite window or door 9.

[0065] Also according to the invention is any combination of the embodiments of the sealing strip described in the figures and the description. In particular, individual features of the described embodiments 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 fields. Bezugszeichenliste

[0066] 1, 1'Sealing strip 11Base body 11AStiffening zone 111First side 111'Second side 112First end 112'Second end 13, 13'Adhesive layer 14, 14'Foil strip 14A, 14BProtrusion 7Joint 8Masonry 9Window or door FBFJoint width HHHeight / Depth BWidth LLength

Claims

1. A 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 base body (11) which is delimited by a first cheek side (111), on which an adhesive layer (13) is arranged, a second cheek side (111'), on which an adhesive layer (13') is arranged and which is preferably designed symmetrically to the first cheek side (111), a first end face (112) and a second end face (112') and is made of a deformable material, characterized in that the base body (11) is made of a thermoplastic foam material, wherein the base body (11) has a compression hardness (according to DIN ISO 3386-01) at 50% compression of a maximum of 30 kPa, preferably a maximum of 15 kPa, most preferably a maximum of 7 kPa, and wherein the base body (11) is made of a closed-cell extruded foam material which is made open-cell by a mechanical post-treatment, wherein the open-cell content is 70 to 99%.

2. The sealing strip (1) according to claim 1, characterized in that the first cheek side (111) is at least partially covered by a film strip (14) which covers the first adhesive layer (13), in order to prevent unwanted sticking.

3. The sealing strip (1) according to claim 1 or 2, characterized in that the average cell size of the foam material is 0.6 mm to 1.5 mm, preferably 0.9 mm to 1.5 mm.

4. The sealing strip (1) according to claim 1, 2 or 3, characterized in that the open-cell content is 80 to 99% and preferably 91 to 99%.

5. The sealing strip (1) according to any one of claims 1 to 4, characterized in that the base body (11) is made of an ethylene-butyl-acrylate-based and / or an ethylene-vinyl-acrylate-based polymer material and / or that the base body (11) is made of a cross-linked polymer material.

6. The sealing strip (1) according to any one of claims 1 to 5, characterized in that a decrease of the compression hardness of the base body (11) can be adjusted by at least one of the following features: - by an increase of the open cell content of the thermoplastic foam material; - by a decrease of the density of the thermoplastic foam material; or - by an increase of the cell size of the thermoplastic foam material.

7. The sealing strip (1) according to any one of claims 1 to 6, characterized in that the sealing strip (1) can be rolled up, wherein the base body (11) is preferably compressed.

8. The sealing strip (1) according to any one of claims 1 to 7, characterized in that the base body (11) has at least one stiffening zone (11A) which has an increased compression hardness compared to the remaining base body (11).

9. The sealing strip (1) according to any one of claims 1 to 8, characterized in that the first end face (112) and / or the second end face (112') are designed to be convex with respect to the base body (11) and / or that the first cheek side (111) and / or the second cheek side (111') are designed to be concave with respect to the base body (11).

10. The sealing strip (1) according to any one of claims 1 to 9, characterized in that the first adhesive layer (13) and the second adhesive layer (13') comprise different adhesives.

11. The sealing strip (1) according to any one of claims 1 to 10, characterized in that the first adhesive layer (13) comprises a high-tack adhesive and / or that the second adhesive layer (13') comprises a low-tack adhesive and / or that the tack of the first adhesive layer (13) (Loop Tack according to FINAT 9) is at least three times, preferably at least five times, particularly preferably at least ten times the tack of the second adhesive layer (13') (Loop Tack according to FINAT 9).

12. The sealing strip (1) according to any one of claims 1 to 11, characterized in that the base body (11) has a density of maximum 50 kg / m3, preferably maximum 30 kg / m3.

13. The sealing strip (1) according to any one of claims 1 to 12, characterized in that the width of the base body (11) is at least one and a half times, preferably at least twice, more preferably at least two and a half times, the height of the base body (11), wherein the width is measured between the first cheek surface (111) and the second cheek surface (111') and the height is measured between the first end face (112) and the second end face (112').

14. The sealing strip (1) according to any one of claims 1 to 13, characterized in that the sealing strip (1) has been produced by extrusion or by assembly.

15. Use of a sealing strip (1) according to any one of claims 1 to 14 for sealing a joint (7) between a masonry (8) and a window or a door (9).