WO2001029348A1 - A strip which can be attached to a window frame or a door frame - Google Patents

Abstract

The invention relates to a strip (22) which can be attatched to a window frame (16) or a door frame characterized in that said strip is provided with a strip component (24) and a flat material segment (26) secured to the strip component (24). Said segment has a water impermeable region (42) to bridge the gap (18) between the window frame (16) or the door frame and a wall (6) of a building. The window frame (16) or the door frame is built into the wall.

Description

 A BAR TO BE INSTALLED ON A WINDOW FRAME OR DOOR FRAME

The invention relates to a bar attachable to a window frame or door frame. So you know so-called

Plastering strips which can be attached to a window frame or door frame by means of an adhesive tape and which enable the improved connection between a layer of plaster on a building wall and the window frame or door frame (cf. EP 0 318 045 A).

The invention has for its object to make available a bar attachable to a window frame or door frame, which is equipped with a novel function that has not previously been assigned to such bars.

To achieve this object, a bar that can be attached to a window frame or door frame is provided, characterized in that it has a bar component and a flat material section fastened to the bar component with a water-impermeable area for bridging the joint between the window frame or

Door frame and a building wall, in which the window frame or door frame is installed.

The concept of the invention is to provide a bar (preferably one) that can be attached to a window frame or door frame

Bar that is available anyway to perform another task to combine a water-tight function). With "water impermeability", depending on the field of application, the impermeability to liquid water or the impermeability to water vapor is more in the foreground, as will become clearer below, so that "water impermeable"

Meaning of "impermeable to liquid water and / or impermeable to water vapor". It is also preferred if the water impermeable area is also impermeable to air, as is the case with most water impermeable materials.

The air inside buildings often has a comparatively high humidity compared to the air from the outside environment, i.e. a comparatively high water vapor content. The water vapor in the room air tends to get to the outside of the housing, whereby joints between different building components are preferred diffusion paths with a comparatively lower diffusion resistance. Especially in the case of a thermal barrier coating on the outside of the building wall, as is more and more the norm, especially in newer buildings, there is the possibility that water vapor from the inside into the

Thermal insulation layer penetrates. In the case of further diffusion to the outside of the thermal insulation layer, depending on the prevailing outside temperature, the dew point is often fallen below, so that water condensate collects in the thermal insulation layer. Such moisture penetration of the thermal insulation layer is highly undesirable in terms of building physics and weakens the insulation.

Especially with thick thermal insulation layers, it is not uncommon to have imperfect sealing against water ingress from above fight. Liquid water, which flows down in the area between the thermal insulation layer and the actual building wall, leads to moisture penetration of the actual building wall from the outside, with all the known disadvantages in terms of building physics.

For these reasons, it is extremely advantageous to seal the joint between a window frame or door frame and the building wall, in which the window frame or door frame is installed, against vapor and / or liquid water. This joint sealing can be done with little effort by means of the strip according to the invention

Reach material and labor. From the remarks below, it will also become clearer that the sealing can be carried out by means of the strip according to the invention on the outside of the window frame or door frame, or on the inside of the window frame or door frame. If the

Sealing against moisture penetrating from the outside is in the foreground, the sealing on the outside of the window frame or door frame is of course preferable.

Basically come for the waterproof area of the

Flat material section, consider all materials that have the property of water impermeability and are sufficiently aging-resistant at the installation site under the conditions prevailing there. However, plastic is particularly preferred because of its low price and good price

Resistance. The water-impermeable area of the flat material section therefore preferably consists at least to a substantial extent of plastic, particularly preferably soft polyvinyl chloride or synthetic rubber. The phrase "at least one essential Teü "was chosen because the water-impermeable area of the flat material section can still contain one or more components made of another material, for example a reinforcing component made of glass fiber fabric. As an alternative, which is not made of plastic, be a natural rubber material with or without

Called tissue reinforcement.

The strip component is also preferably made of plastic at least to a substantial extent. A particularly preferred plastic for the water-impermeable area of the flat material section and / or for the last component is polyvinyl chloride (PVC). In particular if these two components are to be fastened to one another by welding, it is advantageous if they consist of chemically the same material. However, there are other plastics that can also be used, e.g. Polypropylene (PP) and polystyrene

(PS) for the last component.

The water-impermeable region of the flat material section preferably has a strength-increasing component and an associated, water-impermeable component.

Providing two such components, each of which is specially selected for a subtask, is usually inexpensive. On the other hand, it is quite possible, e.g. only work with a sufficiently stable plastic film without separate, strength-increasing components.

The strength-increasing component is preferably designed as a network of strands, preferably a glass fiber strand woven into a grid, or as a synthetic fiber fabric, preferably polyester fabric. In which Polyester fabric can be a fabric made of relatively loosely arranged polyester threads, in which the fabric is also designed with numerous round openings of approximately 1 mm in diameter that are left open.

Particularly preferred examples of the material structure of the water-impermeable area of the flat material section are, on the one hand, fabric-reinforced plastic films (the fabric reinforcement, for example, from the above-mentioned glass fiber fabric) and, on the other hand, the above-mentioned polyester fabric with one or both sides

Plastic coating, in particular made of a synthetic rubber, in particular EPDM (ethylene-propylene-diene-polymethylene). The two materials mentioned for the impermeable area are available on the market.

The flat material section preferably has a perforated area which adjoins the water-impermeable area on the side opposite the strip component. With the openwork area, the flat material section can be anchored easily and well to the building component adjacent there. The perforated area can preferably be made by making perforations, e.g. of punch holes with a diameter of 1 to 4 mm. For example, in the case of the flat material section made of a supporting component with a plastic coating, the perforated area can preferably be simply removed by omitting the

Create plastic coating.

The flat material section is preferably attached to the strip component by gluing or welding or clamping. There are but there are other options, such as fastening by a kind of sewing process. Because of the rational production method and the particularly firm type of connection, welding is particularly preferred, and ultrasonic welding is one of the possible types of welding. Ultrasonic welding is particularly preferred with additional

Material strand carried out, as will be seen below in a preferred exemplary embodiment.

The type of strip design according to the invention is preferably carried out on a strip that can also be used for a further function on the window frame or door frame. A particularly outstanding example is the plastering strip mentioned at the beginning, but also a so-called fabric strip, i.e. a strip to which a reinforcing fabric section is attached for embedding in a filler layer or a plaster layer of the building wall. There are strips that are both plastering strips and fabric strips, with the invention then creates a strip with a triple combination of functions. There are a whole range of options for attaching the strip according to the invention to the window frame or door frame, such as gluing, screwing, clamping e.g. in a suitable groove in the frame. Gluing, in particular by means of a self-adhesive spacer tape on the bar, is very particularly preferred.

The flat material section is normally a flat material section with a constant width, measured transversely to the longitudinal direction of the bar. The width of the water-impermeable area is usually determined by the joint width on the building that you want to bridge safely. The The width of the perforated area, if any, is usually about the same size as the width of the water-impermeable area.

The invention and further developments of the invention are explained in more detail below on the basis of exemplary embodiments illustrated in the drawings. It shows:

1 shows in a horizontal section part of a building wall part of a window frame or door frame built into the building wall;

FIG. 2 shows a detail from FIG. 1 on a larger scale for a more precise representation of a strip according to the invention;

Fig. 3 is a horizontal section analogous to FIG. 1, but with a window frame or door frame installed further outside in the building wall.

In Fig. 1, the interior of the building is labeled "2" and the exterior of the building is labeled "4". A building wall 6 consists of a load-bearing wall 7 e.g. made of bricks or concrete and a thermal insulation layer 14. The flat side of the load-bearing wall 7 facing the interior 2 of the building is designated "8", while a

Reveal, which runs transversely to it, is labeled "10". On the outer flat side 12 of the load-bearing wall 7, the thermal insulation layer 14 is applied, for example made of foamed polystyrene. A window is installed in the window reveal 10, a part of which is drawn in FIG. 1 of the fixed, built-in window frame 16. If you think Fig. 1 a little further to the right, there is - in mirror image - the other, vertical part of the built-in, fixed window frame 16. In the window frame 16 either the window glass is inserted directly or there is a movable window sash.

Instead of the drawn part of a window frame 16, one can imagine a part of a door frame in a completely analogous manner. The

Window frames and the door frame can e.g. made of wood, plastic, metal, painted metal or aluminum.

There is a joint 18 between the load-bearing wall 7 and the window frame 16. The joint 18 is normally made of a suitable material, e.g. Polyurethane foam or mineral wool, more or less perfectly filled. Nevertheless, inside the building 2 air loaded with water vapor has the tendency through which

Diffuse 18 to diffuse exterior 4 of the building. A mineral wool joint filling does not provide excessive resistance to this diffusion. Diffusion paths are also often available for foamed joints, e.g. because the foaming has not been carried out perfectly or because of shrinkage processes after the

Foaming is not a perfect close contact between the load-bearing wall 7 and the foam 20 and / or the foam 20 and the

Window frame 16 is made.

On the outside of the window frame 16 or door frame, a bar 22 is glued, which is shown in Fig. 1 and shown individually in Fig. 2 on a larger scale. The strip 22 consists essentially of a strip component 24, a flat material section 26 fastened to the strip component 24, a reinforcing fabric section 28 fastened to the strip component 24 and an adhesive tape 30 glued to the strip component 24 roughly speaking, the strip component 24 has - roughly speaking - the shape of a lying, very flat rectangle with a relatively short leg 32 that protrudes upwards in the middle. About half of the "lying rectangle" is a so-called protective flap 34, which over a break-off area 36 reduced

Wall thickness is related to the remaining bar 22. To the left of the break-off area 36, the adhesive tape 30 is fastened to the bottom of the bar in FIG. 2, the back. It is an adhesive tape made of foam material, e.g. Made of pure acrylate or butyl rubber with an adhesive layer on both flat sides.

The armoring fabric section 28 is fastened to the leg 32 by ultrasound welding. The flat material section 26 is attached to the other, longer leg 38 by ultrasonic welding. In both cases, the ultrasonic welding is carried out in each case with an additional material strand 40 in the form of a round welding cord, the welding cord being in each case on the side of the reinforcing fabric section 28 or of the flat material section 26 facing away from the strip component 24. With the help of the respective welding cord one can easily

Generate high strength ultrasonic welding.

The flat material section 26 in turn consists - adjacent to the strip component 24 - from a water- and air-impermeable area 42 and - at the opposite of the strip component 24

Page then - an openwork area 44.

The strip component 24 is preferably made of PVC, the reinforcing fabric section 28 is preferably made of Glass silk fabric, the flat material section 26 preferably consists of fabric-reinforced soft PVC or rubber. The perforated area 44 differs from the water-impermeable area 42 in that punched holes 46 are provided subsequently.

In Fig. 1 you can see how the strip is glued to the outside of the window frame 16 or door frame by means of the adhesive tape 30. The water-impermeable area 42 bridges the joint 18 and then extends a little further at the interface between the load-bearing wall 7 and the thermal insulation layer 14. The perforated area 44 then extends a considerable distance further in this boundary layer.

The reinforcing fabric section 28 extends essentially at right angles to the flat material section 26 on the reveal face of the thermal insulation layer 14. The reinforcing fabric section 28 serves to firmly anchor the leveling compound or plaster and thus also to avoid cracks in the leveling compound or in the plaster, if possible. that on the reveal face of the

Thermal insulation layer 14 is applied. The filler or plaster is indicated in Fig. 2 with "48" in the drawing.

Before the filler or plaster 48 is applied, a protective film (not shown) can be glued to the protective flap 34, which, if one looks at the entire window frame 16 with its four frame parts, spans the rectangular window opening as a whole and during the application of the plaster 48 against contamination protects. After the plaster 48 is applied, one can Remove the protective film and break off the protective tabs 34 all around. According to this description, it is also more understandable why one can refer to the strip 22 shown in FIGS. 1 and 2 as a combined plastering strip, fabric strip, vapor barrier strip.

From Fig. 1 it is clear that the water-impermeable area 42 of the strip 22 provides a perfect seal of the joint 18 against diffusion of water vapor into the thermal insulation layer. At the same time, a perfect seal against the entry of water from the outside into the joint 18 is provided. If a seal against diffusion of

Water vapor from the interior of the building 2 to the exterior of the building 4 is more important than a seal against the ingress of water from the outside inwards, the strip 22 can optionally also be attached, mirror-inverted, attached to the inside of the window frame 16 or door frame, so that the water-impermeable area 42 the

Groove 18 bridged on the inside. The rest of the water-impermeable area 42 and the perforated area 44 can simply be laid along the reveal 10, optionally also along the inside 8 of the load-bearing wall 7, the areas 42 and 44 later being simply covered with the interior plaster layer of the load-bearing wall 7.

It is pointed out that the water-impermeable area 42 does not necessarily have to bridge the joint 18 in a straight line, as drawn in FIG. 1. There the impermeable

Area 42 may be curved, for example, approximately S-shaped, without the function of the vapor diffusion barrier being impaired. In Fig. 3, a configuration is drawn, which results when the window frame 16 or door frame is installed more towards the outside of the building 4, i.e. is no longer located directly opposite the actual wall reveal 10 but opposite the reveal face of the thermal insulation layer 14 (industry name: presented

Window frames). In this configuration, it makes more sense to attach the bar 22 to the inside of the window frame 16 or door frame. Here, too, the water-impermeable area 42 bridges the joint 18 (which is now between the window frame 16 and the thermal insulation layer 14). Also with the configuration according to

Fig. 3, there could be a reinforcement fabric section 28 attached to the bar 22. In many cases, however, a reinforcing fabric section 28 will be dispensed with because it is less required for the interior plaster to be applied here. For this reason, the leg 32 can be made shorter.

It is understood that the entire bar 22 is designed to be constant in its longitudinal direction, that is to say at right angles to the plane of the drawing in FIG. 2. The strip component 34 is preferably produced by plastic extrusion. The reinforcing fabric section 28 and the

Flat material sections 26 generally extend along the bar 22 with a constant width.

Claims

1. On a window frame (16) or door frame attachable bar (22), characterized in that it has a strip component (24) and one on the Strip component (24) fastened flat material section (26) with a water-impermeable area (42) for bridging the joint (18) between the window frame (16) or door frame and a building wall (6) into which the window frame (16) or door frame is installed, having. 2. Strip according to claim 1, characterized in that the strip component (24) consists at least to a substantial extent of plastic. 3. Strip according to claim 1 or 2, characterized in that the water-impermeable area (42) of the flat material section (26) consists at least to a substantial extent of plastic. 4. bar according to claim 3, characterized in that the water-impermeable area (42) of the flat material section (26) consists at least to a substantial extent of soft polyvinyl chloride or rubber. 5. A strip according to claim 1 to 4, characterized in that the water-impermeable region (42) of the flat material section (26) has a strength-increasing component and an associated water-impermeability Has component. 6. bar according to claim 5, characterized in that the strength-increasing component, as a net-like Strands, preferably glass fiber strands, built component or as a synthetic fiber fabric, preferably polyester fabric, is formed. 7. Strip according to one of claims 1 to 6, characterized in that the flat material section (26) has a perforated area (44) which adjoins the strip component (24) opposite side to the water-impermeable area (42). 8. A strip according to claim 7, characterized in that the perforated area (44) has perforations (46). 9. Strip according to one of claims 1 to 8, characterized in that the flat material section (26) is fixed by gluing or welding or clamping to the strip component (24). 10. Strip according to claim 9, characterized in that the weld is an ultrasonic weld with an additional strand of material (40). 11. Strip according to one of claims 1 to 10, characterized in that it is a plastering strip. 12. Strip according to one of claims 1 to 11, characterized in that on it a reinforcing fabric section (28) for embedding in a filler or plaster layer (48) of the building wall (6) is attached. 13. Strip according to one of claims 1 to 12, characterized in that it has an adhesive tape (30) for sticking the strip (22) to the window frame (16) or door frame.