Sealing strip

Description

[0001] The invention relates to an elongated and preferably wedge-shaped sealing strip for construction purposes, in particular for sealing joints and gaps during the installation of windows and doors in the shell as well as for general joints.

[0002] To optimize the energy efficiency of buildings, joints that arise between building components, especially when installing doors and windows, must be sealed with suitable means. Sealing such joints is also relevant in relation to the unwanted penetration of wind, precipitation, and moisture. Sealing joints can also be important for fire protection, soundproofing, or moisture protection.

[0003] For this purpose, various pre-compressed sealing tapes are known from the prior art. These sealing tapes comprise an elastic foam strip which is pre-compressed in such a way that it expands slowly after unrolling. An adhesive layer is applied to one side of the foam strip, with which the sealing tape can be adhered to a component. The 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 quickly in warm temperatures that there is too little time to install the window or door after the sealing tape has been applied. The tradesman has to hurry after applying the sealing tape, which greatly increases the error rate. In addition, the load can be transferred from the partially decompressed foam strip during installation of the window or door.At low temperatures, the significantly delayed recovery leads to a delay in sealing. Furthermore, pre-compressed sealing tapes are only suitable for a limited range of joint widths. Therefore, several dimensions of pre-compressed sealing tape must always be kept in stock on a construction site.

[0004] This results in increased space and material requirements and increases 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 is based solely on the foam's expansion and the resulting pressure against the wall.

[0005] EP 1 959 064 A1 discloses a resilient sealing tape. The resilient sealing tape comprises a resilient foam strip 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 releasing the seam triggers a recovery of the foam strip. The seam can be accidentally released during insertion, and releasing the seam can cause the foam strip to slip, which negatively impacts the seal.

[0006] DE 296 13 232 U1 discloses a prefabricated, wedge-shaped sealing strip for construction purposes. The sealing strip, made of a flexible plastic material, can be pressed into the area to be sealed. A disadvantage of this method is that the flexible plastic material makes it difficult to press the sealing strip into narrow joints.

[0007] EP 2 505 759 A2 shows a resilient sealing tape with a structural element made of a dimensionally stable material.

[0008] The present invention is therefore based on the object 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, durably and reliably.

[0009] 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 adhesion and sealing properties.

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

[0011] In addition, the sealing element should be able to be optimized to meet specific technical and aesthetic requirements without compromising its sealing function.

[0012] This object is achieved with a sealing strip having the features specified in claim 1. Advantageous embodiments of the invention are specified in further claims. Sealing a joint with a sealing strip according to the invention is achieved by the method also according to the invention, which has the method steps specified in claim 12.

[0013] 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 defined by two, preferably symmetrical, cheek sides and at least one end face. It is made of a deformable material, namely a foam. The deformable base body enables optimal adaptation and thus optimized sealing to uneven surfaces and different joint widths.

[0014] According to the invention, the sealing strip comprises at least one structural element, preferably extending over most of the length of the sealing strip and at least partially arranged in the base body. The structural element, made of a dimensionally stable material, allows the sealing strip to be mechanically stressed and pressed into the joint between the window or door and the masonry. Due to its dimensional stability, the structural element can easily absorb mechanical stress, in contrast to the deformable base body. This facilitates and accelerates the insertion of the sealing strip. Furthermore, the sealing strip can be precisely positioned along the depth of the joint.

[0015] According to the invention, an adhesive layer, preferably extending along the entire sealing strip, is arranged on at least one cheek side, preferably on both cheek sides. The adhesive layer can partially or completely cover one or both cheek sides. The adhesive layer can be applied with or without an associated thread fabric or longitudinal reinforcement. The adhesive layer serves to ensure optimal and bilateral 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 the window or door and the masonry. This facilitates the insertion of the sealing strip into the joint.

[0016] In a further preferred embodiment, a projection is formed on the film strip, which at least partially covers the adhesive layer, or optionally the protective film arranged on the adhesive layer. This prevents accidental tearing or tearing of the adhesive layer, or optionally the protective film arranged on it, during insertion of the sealing strip into the joint.

[0017] In a further preferred embodiment, the base body has a skin-like layer along the cheek sides, which facilitates the insertion of the sealing strip into the joint. The skin-like layer is preferably made of a skin-forming foam, particularly preferably the foam of the base body.

[0018] 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 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 removed. Particularly preferably, the film strips covering the cheek sides each have a gripping section projecting beyond the cheek sides, by which the part of the film strip to be removed can be easily grasped.A tear seam with a thread can be designed, for example, as described in EP 1 959 064 A1. Suitable adhesives include known adhesives, for example, methacrylate-based adhesives as described in DE 296 13 232 U1. The protective film is preferably a siliconized film. The film strip(s) can be made of the same material as the protective film. The film strip(s) can also function as a protective film. An example is shown in . Fig. 1d shown.

[0019] In a particularly preferred embodiment, the end face of the sealing strip's base body has a cross-section shaped like a circular segment or an elliptical segment, or one that is convex relative to the cheek sides. This shape enables optimal contact with any adjoining sealing joint. In a preferred embodiment, the end face is covered by a cover strip, coating, or skin-forming layer and / or painted. This allows adaptation to additional aesthetic and / or technical requirements, such as increased weather resistance or fire resistance, for a desired application.

[0020] The front of the base body, and if applicable, the cover strip, is preferably watertight or airtight according to DIN 18542 / EN 1027. In this case, watertight means particularly watertight against a pressure of more than 600 Pa.

[0021] In a particularly preferred embodiment, the sealing strip is designed to be rollable. This allows the elongated sealing strip to be transported and stored in a space-saving manner. The base body is preferably compressed, which also enables space-saving transport and storage.

[0022] According to the invention, the base body is made of a deformable material and the structural element is made of a dimensionally stable material. The terms "deformable" and "dimensionally stable" are used herein as they are commonly understood by those skilled in the art. The base body and the structural element are made of different materials, with the material of the base body exhibiting greater deformability than the material of the structural element.

[0023] The base body is preferably made of foam, rubber, silicone, or a combination thereof. Soft open-cell, semi-open-cell, or closed-cell foams, particularly based on polyolefin, PVC, rubber, EPDM, or polyurethane (PU), or combinations thereof, are preferred foam materials. 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. Elastomers such as natural rubber, isoprene, or styrene-butadiene rubber, or combinations thereof, are particularly suitable as rubber materials. Common silicones are suitable as silicone materials.

[0024] The structural element(s) are preferably made of a rigid foam, cardboard, plastic, metal, wood, a scrim, a plastic fabric, or a combination thereof. Preferred plastics are polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide, or polycarbonate. A scrim or plastic fabric can be coated with an epoxy resin to maintain or increase the desired dimensional stability.

[0025] Sealing strips according to the invention are preferably suitable for sealing joints with widths between 3 mm and 200 mm, preferably between 3 mm and 150 mm, more preferably between 3 mm and 100 mm, and most preferably between 4 mm and 60 mm. For different joint widths, a single sealing strip or at least a small number of differently dimensioned sealing strips can be used, which reduces space and storage requirements on a construction site. The sealing strip preferably has a dimension of 4 to 300 mm (width).

[0026] In a preferred embodiment, the structural element is designed as an elongated and flexible strip. For improved flexibility, the structural element preferably has tapers, holes, or recesses along the sealing strip. The term "flexible" refers to the stability of the structural element in the longitudinal direction of the sealing strip. Examples of a flexible structural element are described in the Figuren 2f und 2g shown.

[0027] In a particularly preferred embodiment, several structural elements are provided, preferably arranged periodically along the sealing strip. This reduces the material consumption and improves the flexibility of the sealing strip.

[0028] The production of the sealing strip is not subject to any particular restrictions and is carried out using methods known to those skilled in the art.

[0029] With a sealing strip according to the invention, a joint, in particular a joint in construction between a window or door and masonry or woodwork, can be sealed using a method also according to the invention. (a) the sealing strip is arranged along the joint and, if necessary, cut to the required length; and (b) the sealing strip is pressed into the interior of the joint along its entire length by direct or indirect mechanical loading of the structural element.

[0030] In a preferred embodiment, (c) the adhesive layers are each bonded to the masonry and the window or door.

[0031] In a particularly preferred embodiment of the method, the bonding of the adhesive layers to the masonry and the window or door is triggered by peeling off a removable protective film or a removable protective layer.

[0032] The process is preferably carried out by pressing the sealing strip into the joint by hand, with an application aid or with a standard tool, such as a hammer, a spatula or a screwdriver.

[0033] The use of a sealing strip according to the invention for sealing a joint between a masonry or woodwork and a window or door is also the subject of this invention.

[0034] The invention is explained in more detail below with reference to the drawings. In the drawings: Fig. 1a a sealing strip 1 according to an example not falling within the scope of the appended claims; Fig. 1b a second embodiment of a sealing strip 1 according to the invention; Fig. 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; Fig. 2b a sixth embodiment of a sealing strip 1 according to the invention in a cross section; Fig. 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. 2g the sealing strip 1 from Fig. 1b in a longitudinal section in an embodiment according to the invention with several structural elements 12, 12', 12"; Fig. 2h the structural element 12 from Fig. 2e in a further embodiment; Fig. 3a the sealing strip 1 from Fig. 1d with gripping sections 143, 143' formed on the film strips 14, 14' Fig. 3b the sealing strip 1 from Fig. 3a with a cover strip 15; Fig. 4 a sealing strip 1 according to the invention in a joint 7; Fig. 5a a joint 7 between a schematic masonry 8 and a schematic window or door 9 with a sealing strip 1 aligned therealong; Fig. 5b the fugue 7 from Fig. 5a while the sealing strip 1 is pressed into it; Fig. 5c the fugue 7 from Fig. 5c with sealing strip 1 pressed into it and protruding gripping section 143, 143'; Fig. 5d the joint 7 sealed with a sealing strip 1 made of Fig. 5a ;

[0035] Fig. 1a shows a cross-section of a sealing strip 1. The sealing strip 1 consists of a base body 11, which is defined 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 12. The coordinate system shown defines the orientation of the terms width (W), length (L), and height / depth (H) used in this application.

[0036] Fig. 1b shows a second embodiment of a sealing strip 1 according to the invention. In addition to the Fig. 1a 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 along their length.

[0037] Fig. 1c shows a third embodiment of a sealing strip 1 according to the invention.

[0038] The cheek sides 111, 111' are each partially covered by a film strip 14, 14'. A projection 142, 142' is formed on each of the film strips 14, 14', which partially covers the adhesive layer 13, 13'. In the illustrated embodiment, the structural element 12 has a T-shaped cross-section.

[0039] Fig. 1d shows a fourth embodiment of a sealing strip 1 according to the invention. The film strips 14, 14' are designed such 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.

[0040] Fig. 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 bounded 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'.

[0041] Fig. 2b shows a sixth embodiment of a sealing strip 1 according to the invention in cross-section. In the embodiment shown, a part of the structural element 12 protrudes from the base body 11.

[0042] Fig. 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, 111' have two differently inclined sections. This simplifies the insertion of the sealing strip 1 into a joint.

[0043] Fig. 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.

[0044] Fig. 2e shows a ninth embodiment of a sealing strip 1 according to the invention in a cross-section. The cheek sides 111, 111' are curved.

[0045] 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 arranged along the structural element 12 for improved flexibility.

[0046] Fig. 2g shows the sealing strip 1 from Fig. 1b in a longitudinal section in a further embodiment according to the invention with several structural elements 12, 12', 12". The individual structural elements 12, 12', 12" can be connected to one another via threads, wires or a fabric.

[0047] Fig. 2h shows the structural element 12 from Fig. 2e In a further embodiment, the structural element has sections of soft components 122, 122' and hard components 123, 123'. This allows the mechanical properties of the structural element 12 to be optimized.

[0048] Fig. 3a 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, thereby exposing the adhesive layer 13, 13'.

[0049] Fig. 3b shows the sealing strip 1 from Fig. 3a with a cover strip 15. The cover strip 15 can have an aesthetic or technical function.

[0050] Fig. 4 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' are at least partially pressed 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.

[0051] Fig. 5a bis Fig. 5d illustrate the inventive method for sealing a joint 7 with a sealing strip 1 according to the invention.

[0052] Fig. 5a shows a joint 7 between a schematic masonry 8 and a schematic window or door 9 with a sealing strip 1 aligned along it.

[0053] Fig. 5b shows the fugue 7 from Fig. 5a while the sealing strip 1 is pressed into it. Mechanical loading exerts a force on the structural element 12, pressing the sealing strip 1 into the joint 7. The foil strips 14, 14' reduce the frictional forces between the base body 11 and the masonry 8 and the window or door 9.

[0054] Fig. 5c shows the fugue 7 from Fig. 5c with sealing strip 1 pressed into it and protruding gripping section 143, 143'. After pressing in, preferably only the gripping sections 143, 143' protrude from the joint 7. The gripping sections 143, 143' are grasped by hand and the corresponding film strip 14, 14' is at least partially removed.

[0055] Fig. 5d shows the joint 7 sealed with a sealing strip 1 from Fig. 5a By removing the film strips 14, 14', the adhesive layers 13, 13' are exposed and bond to the masonry 8 and the window or door 9.

[0056] 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 symbols

[0057] 1 Sealing strip 11 Base body 111, 111' Cheek side 112 End face 113 Second end face 12, 12', 12" Structural element 121 Tapered section 122, 122' Soft component 123, 123' Hard component 13, 13 Adhesive layer 14, 14' Film strip 141 Tear seam 142, 142' Overhang 143, 143' Gripping section 15 Cover strip 7 Joint 8 Masonry 9 Window or door FB Joint width HHeight / 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), said sealing strip having an elongated and preferably wedge-shaped base body (11), which is delimited by two preferably symmetrical cheek sides (111, 111') and at least one front side (112), and is made of a deformable material, which is a foam, wherein the sealing strip (1) comprises at least one structural element (12), which preferably extends over the majority of the length of the sealing strip (1), is at least partially arranged in or on the base body (11), and is made of a dimensionally stable material, by which the sealing strip (1) can be mechanically loaded and can be pressed into the joint (7), and wherein on at least one cheek side (111, 111'), preferably on both cheek sides (111, 111'), an adhesive layer (13, 13') is arranged.

2. The sealing strip (1) according to claim 1, characterized in that the cheek sides (111, 111') are at least partially covered by a film strip (14, 14').

3. The sealing strip (1) according to claim 2, 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 a gripping section (143, 143') protruding beyond the cheek sides (111, 111') is formed on the film strip (14, 14').

4. The sealing strip (1) according to claim 1, 2 or 3, characterized in that the base body (11) is delimited along the cheek sides (111, 111') by a skin-like layer which facilitates the insertion of the sealing strip (1) into a joint (7).

5. The sealing strip (1) according to one of the claims 2 to 4, characterized in that the adhesive layers (13, 13') are coated by a removable protective film or a removable protective layer, or that the film strip (14, 14') covers the adhesive layers (13, 13') in order to prevent accidental sticking.

6. The sealing strip (1) according to claim 5, characterized in that the film strip (14, 14') has a tear seam (141).

7. The sealing strip (1) according to one of the claims 1 to 6, characterized in that the front side (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 front side (112) is painted in color.

8. The sealing strip (1) according to claim 7, characterized in that the front side (112), and optionally the cover strip (15), is driving rain-tight or airtight according to DIN 18542 / EN1027, and / or that the base body is driving rain-tight or airtight according to DIN 18542 / EN1027.

9. The sealing strip (1) according to one of the claims 1 to 8, characterized in that the sealing strip (1) can be rolled up, the base body (11) preferably being compressed.

10. The sealing strip (1) according to one of the claims 1 to 9, 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 is made of soft foam.

11. The sealing strip (1) according to one of the claims 1 to 10, characterized in that the sealing strip is suitable for sealing joints (7) with joint widths (FB) between 3mm and 200mm, preferably 3mm and 150mm, even more preferably 3mm and 100mm, and most preferably between 4mm and 60mm.

12. A method for sealing a joint (7), in particular a joint between windows or doors (9) and masonry (8), using a sealing strip (1) according to one of the claims 1 to 11, wherein (a) the sealing strip (1) is arranged along the joint (7) and optionally cut to the required length; and (b) the sealing strip (1) is pressed into the interior of the joint (7) along the entire length by direct or indirect mechanical loading of the structural element (12).

13. The method according to claim 12, characterized in that the adhesive layers (13, 13') are each glued to the masonry (8) and the window or the door (9), and / or the gluing of the adhesive layers (13, 13') to the masonry (8) and the window or the door (9) is triggered by peeling off a removable protective film or a removable protective layer (14, 14').

14. The method according to claim 13, characterized in that the sealing strip (1) is pressed into the joint (7) by hand, using an application aid or using a standard tool.

15. Use of a sealing strip (1) according to one of the claims 1 to 11 for sealing a joint (7) between masonry (8) and a window or a door (9).