EP0601421A1 - Sealing profile and method for creating a tight connection in using this profile - Google Patents

Abstract

Extruded sealing profile for sealing a glass pane which is arranged in a frame between two peripheral stop ribs 1, 2, having a foot-side retaining part 4 which exhibits two approximately parallel outer walls 5, 6, and having a head-side sealing part 7 which exhibits at least one sealing lip 8 running approximately transversely with respect to the outer walls, the outer wall 5 directed towards the stop rib 1, 2 exhibiting a self-adhesive layer 10 which is covered by a protective film 9 before use. In order to achieve a permanently sealed arrangement, it is provided that the outer wall 6 which is directed towards the glass pane likewise exhibits a self-adhesive layer 12 covered by a protective film 11. The sealing lip 8 is formed such that it permits the protective film 11 to be pulled out when the outer wall 6 which is directed towards the glass pane is pressed against said glass pane. <IMAGE>

Description

Extruded sealing profile for sealing a glass pane arranged in a frame between two circumferential stop ribs, with a hollow section-shaped holding part on the foot side, which has two approximately parallel outer walls, and with a sealing part on the head side, which has at least one sealing lip running approximately transversely to the outer walls, the outer walls each having one have a layer with adhesive properties covered with a protective film before use.

A glass pane is held in a window or door frame from the weather side by a stop rib, which is usually referred to as a "glass rebate". The glass rebate is usually a web connected in one piece to the rest of the window frame. The stop rib on the inside, which is usually called the glass strip or glass retaining strip, is only attached when the glass pane is in its correct position in the window frame and serves to fix the glass pane. The joints that exist between the glass pane and the glass rebate on the one hand and the glass pane and the glass retaining strip on the other hand are often sealed with silicone compound after the pane has been installed.

Since sealing with silicone mass requires special skill and is expensive, processes and arrangements are already available "Dry glazing" has been developed. In the case of dry glazing, the sealing between the glass pane and the stop ribs (glass rebate or glass retaining strip) is achieved by all-round sealing profiles.

In the case of aluminum or plastic windows, the glass rebate and the glass retaining strip can easily be extruded in such a form that they have receiving grooves for the sealing profiles. However, such a design cannot be transferred to wooden profiles, since the attachment of retaining and locking grooves for the sealing profiles would weaken the corresponding parts with regard to their stability, and on the other hand, the addition of a groove, for example to a Galsfalz, an additional, the manufacture of the frame would be an expensive step.

From DE-OS 16 59 533 a strand sealing profile of the type mentioned is known. The extruded sealing profile has sealing strips made of a tough-elastic adhesive material, such as butyl rubber, on its two outer walls. Neither the holding part of the extruded sealing profile nor the tough-elastic sealing strip have sufficient spring properties to compensate for length changes due to shrinkage or changes in the heat caused by the joint or suction and pressure loads between the stop ribs and the glass pane. Particularly after a long period of inactivity, the adhesive strength of the butyl rubber diminishes, so that due to the lack of elastic properties of the butyl rubber and the holding part of the extruded sealing profile, cracks occur in the case of thermal expansion and shrinkage of the glass pane, into which water can penetrate.

From the documents of the German utility model G 90 02 593.8 a sealing profile for sealing between a window frame and the associated window pane is known, which has a cavity with a filling material based on silicone. When the sealing profile is pressed against the glass pane, the cavity tears open along a predetermined breaking point, so that the sealing material can emerge and seal the glass pane. The surface of the sealing profile facing the window frame has a double-sided adhesive tape, so that the sealing profiles during assembly on the window frame be kept safe. The processing of the sealing profile requires a great deal of manual dexterity, since if the sealing profile is pressed too firmly against the glass pane, the sealing compound is pressed outwards, whereas if the pressing is too weak there is a risk that the predetermined breaking point will not tear open and the sealing compound in the closed one Chamber remains so that no sealing function takes place in such an area. The double-sided adhesive tape is only used for fastening between the sealing profile and the frame, but not for fastening and sealing the sealing profile against the glass pane.

From the documents of the German utility model G 70 23 803.8, window sash glazing is known which has a sealing groove and in which a foam strip made of foamed thermoplastic material, such as polyethylene, is inserted in the sealing groove.

From DE-OS 16 84 081 a joint sealing body with a rectangular hollow profile is known, on the narrow sides of which V-shaped connecting webs are provided. The joint sealing body is processed with an adhesive or an elastic sealing compound. In the known joint sealing body, the use of the hollow profile dissolves the stresses that always occur with expansion joints, but the processing of the joint sealing body is complicated and requires great manual skill, since it involves several adhesive or sealing processes.

From the documents of the German utility model G 86 12 008.5 a sealing profile for a glazing seal is known, which is inserted into the gap between a glass pane and a stop rib. This has a head region with two sealing lips, one of which rests against the glass pane with elastic bending and the other presses from above against the upper end face of the glass rebate and forms a drip strip. Although the known sealing profile is easy to process, leaks between the glass rebate and the glass pane can soon occur due to material fatigue.

From DE 40 20 179 A1, an extruded sealing profile is known, in which the holding part is made of soft, closed-cell material, of the type of a foam rubber. With such materials, especially when they are used on the weather side of the window to be sealed, there is a risk that they will lose their elasticity over time and thus the secure hold of the sealing profile is not guaranteed. Driving rain, which penetrates the seal between the sealing lip and the glass pane during heavy downpour, can also accumulate in the window frame.

From the documents of the German utility model G 90 16 708.2 an elastic strand sealing profile for sealing glazing for the sash of windows, doors or the like is already known. The holding part of the known strand sealing profile consists of a longitudinal web, which has two holding ribs projecting at right angles to the longitudinal web on the foot side. A cement filler or a cement tape is attached to both sides of the longitudinal web and is intended to lie against the glass pane or against the stop rib. Since the putty has almost no inherent elasticity, it remains in the shape that it assumed after the extruded profile was arranged between the stop rib and the glass pane. In the case of temperature-related changes in shape, the putty can dissolve over time, so that even with this known extruded sealing profile, no permanent permanent seal between the stop rib and the glass pane is guaranteed.

The invention is therefore based on the object of providing an extruded sealing profile of the type mentioned at the outset, which enables convenient installation of a glass pane and in which the most secure possible seal between the stop rib and the glass pane is ensured.

This object is achieved in the case of the above-mentioned extruded sealing profile in that the layers with adhesive properties consist of a double-sided adhesive tape with acrylate adhesive arranged on polyethylene foam, that the hollow profile is roughly rectangular in outline and has V-shaped connecting webs on its narrow sides which connect the two outer walls, and that the sealing lip has a shape that the pulling out of the protective film Allows when the outer wall facing the glass pane is pressed against the glass pane.

Due to the effect of the two self-adhesive layers, the holding part is permanently held tightly between the glass holding strip and the glass pane. Temperature or moisture-related shrinkage or expansion processes of the stop rib and the resulting dimensional changes in the receiving groove for the extruded sealing profile cannot impair the tight connection, since the holding part, due to its elasticity and due to its permanent and firm connection to the stop rib on the one hand and the glass pane on the other hand, the dimensional fluctuations mentioned easily participates. Due to the special design of the sealing lip, it is possible to remove the protective film only when the parts to be connected have assumed their final and correct relative position, which considerably simplifies the assembly process.

According to a preferred embodiment of the invention, the sealing lip is fastened to the head-side end of the outer wall of the holding part facing the stop rib and has a free leg directed towards the glass pane. The free leg is supported on the glass pane under elastic deformation, so that it enables an excellent seal. Manufacturing tolerances or the above-mentioned temperature and humidity-related dimensional fluctuations of the receiving groove for the extruded sealing profile can easily be accommodated by the elasticity of the free leg, without the sealing to the glass pane being adversely affected thereby.

The sealing lip preferably merges at the end opposite to its free leg into a drip strip, which rests on the upper edge of the stop rib with elastic deformation when the sealing profile is installed and ensures a tight connection there. The sealing lip, together with the drainer, forms an aesthetically perfect connection between the top edge of the stop rib and the glass pane, which hardly differs in shape and appearance from a silicone seal. In contrast to a handmade one Silicone sealing also runs the seal absolutely evenly.

According to an alternative embodiment, it is provided that the sealing lip is arranged on the head-side end of the outer wall of the extruded sealing profile facing the glass pane. This allows a greater contact pressure to be achieved due to the shorter lever arm up to the glass pane. It is advantageous in such an embodiment if a separate drip lip is arranged on the head-side end of the outer wall facing the stop rib, which has an invariable position relative to the stop rib. It is advantageous if the drip lip and the sealing lip overlap one another in the installed state.

The invention also relates to a method for producing a tight connection between a stop rib and a glass pane using an extruded sealing profile with a holding part which has two approximately parallel outer walls, each provided with a self-adhesive layer, on each of which a protective film for the self-adhesive layer is arranged , wherein the strand sealing profile is attached to the stop rib by means of the self-adhesive layer.

In order to enable a quick and flawless assembly of the extruded sealing profile, it is provided that the protective film on the outer wall of the extruded sealing profile facing the glass pane is only removed when the two parts to be sealed are fixed in their final position.

Figur 1:

Ein Strangdichtungsprofil gemäß der Erfindung in vergrößertem Maßstab.

Figur 2:

Ein mittels zweier erfindungsgemäßer Strangdichtungsprofile abgedichtetes Fenster.

Figur 3:

Eine weitere Ausführungsform eines Strangdichtungsprofils.

The invention is explained in more detail below with reference to two exemplary embodiments schematically illustrated in the figures. It shows:

Figure 1:

An extruded sealing profile according to the invention on an enlarged scale.

Figure 2:

A window sealed by means of two strand sealing profiles according to the invention.

Figure 3:

Another embodiment of an extruded sealing profile.

In Figure 1, the elastic strand sealing profile according to the invention is shown in cross section in the relaxed state. It consists of a holding part 4 and a sealing part 7. The holding part 4 is roughly rectangular in rough outline and has two parallel outer walls 5 and 6. The two parallel outer walls are connected by two connecting webs 13 and 14, which are each arranged at the head end and at the foot end. The connecting webs 13 and 14 are V-shaped in such a way that their tips lie in the middle between the two outer walls 5 and 6 and point to the interior of the hollow profile. Both at the tips and at the transition points between the connecting webs 13 and 14 to the outer walls 5 and 6, circular recessed corners 16 are provided, which facilitate the mutual kinking of the parts connected at the corresponding points (predetermined kink points). This design makes it possible that the two outer walls 5 and 6 can be moved towards and away from one another, the V-shaped connecting webs 13 and 14 folding or unfolding like an accordion. The outer walls 5 and 6 are covered with self-adhesive tapes 10 and 12. These consist of a tape made of polyethylene foam that has been impregnated with acrylic adhesive. The self-adhesive tapes 10 and 12 are each covered by siliconized protective films 9 and 11. At the head-side end of the outer wall 5, which is to face the stop rib when the seal is installed, a sealing lip 8 is fastened, which has a free leg 8a which extends beyond the outer wall 6. At the end opposite the free leg 8a, the sealing lip 8 merges into a drip strip 8b, which has a hook-like nose 8c pointing towards the sealing foot. At the transition between the sealing lip 8 and the remaining part of the seal a circular recess 17 is provided.

Figure 2 shows the installed state. In Figure 2, the edge region of a glass pane 3 can be seen, which is held in a wooden window frame by means of a weather-side stop rib, namely a glass rebate 1 and a room-side stop rib, namely a glass retaining strip 2. Because the drawing is greatly enlarged, the stop ribs 1 and 2 are only partially visible and the rest of the window frame. The stop ribs 1 and 2 have grooves 1a and 2a, which are usually provided in all wooden windows, to accommodate silicone sealing compound for sealing between the glass pane and the corresponding stop rib. As shown in FIG. 2, extruded sealing profiles according to the invention are inserted into these grooves 1a and 2a. The extruded sealing profiles, which are pressed together in the space between the wall of the groove 1a and the glass pane 3, stick permanently and firmly to the glass pane 3 on the one hand and the corresponding stop rib 1, 2 on the other hand with the self-adhesive tapes 10 and 12. The walls 5 and 6 are pushed towards one another while deforming the connecting webs 13 and 14. The sealing lip 8a rests tightly against the glass pane 3 with elastic bending. Likewise, the drip tray 8b bears against the upper edge of the corresponding stop rib 1, 2. Weather-related or temperature-related shrinkage and expansion can be easily absorbed by the extruded profile.

If, as a result of heavy rain or window cleaning, moisture can penetrate through the sealing point between the sealing lip 8a and the glass pane 3, it does not get into the interior of the window frame, but initially remains in the space between the sealing lip 8 and that Holding part and the glass pane caught. When heated by solar radiation, the liquid evaporates and leaves the room in the same way that it got there. As a result of the pressure increase due to the evaporation, the sealing lip 8a is raised somewhat, so that the vapors can be drawn off. In this respect, the sealing lip 8a performs a valve function.

The strand sealing profile according to the invention is processed as follows:
The protective film 9 is removed from the outer wall 5, so that the self-adhesive layer 10, which consists of a highly permanent adhesive, becomes free. The extruded sealing profile is glued to the glass rebate 1 of a conventional wooden window frame with the aid of the self-adhesive layer in such a way that the drip strip 8b is supported on the top of the glass rebate. When you reach one Miter corner, the strand sealing profile is provided with a V-shaped miter cut so that it can be placed around the corner until finally the glass rebate 1 is framed all round by the strand sealing profile. Now the glass sheet 3 is placed in the glass rebate, adjusted and "locked" in the usual way. It is important that in this state the protective film 11 remains on the adhesive layer 12 of the outer wall 6, so that there is still no firm connection between the glass pane 3 and the extruded sealing profile.

In an analogous manner, an extruded sealing profile is fastened to the glass retaining strip 2 and then fastened to the window frame, usually by nailing. The protective film 11 can now be pulled out on both extruded sealing profiles. If the end of the protective films 12 is gripped, which is easily possible, for example, by means of a grip bottle or a previously bent section, the protective film 11 can be pulled out very easily on both sides, the sealing lip 8a temporarily lifting off from the glass pane 3. The assembly is usually done so that the frame is below and the glass pane 3 with its own weight rests on the glass rebate. The resulting contact pressure creates an intimate connection between the glass pane and the extruded profile seal, which ensures the permanent sealing between the two parts.

An embodiment variant is shown in FIG. 3. The holding part 4 of the extruded sealing profile shown in FIG. 3 is identical to the holding part 4 of the extruded sealing profile shown in FIG. 1, which is why a new description can be dispensed with.

Different from the embodiment of Figure 1, however, is that the sealing lip 8 is attached to the outer wall 6, which faces the glass pane in the installed state. The sealing lip 8 is therefore significantly shorter and it can therefore - due to the shortened lever - exert a greater contact pressure on the glass pane. The strand sealing profile in FIG. 3 is provided with a drip strip 15, which largely corresponds to the drip strip 8b of the exemplary embodiment shown in FIG. 1. The drip tray 15 is, however not in the sealing lip 8 to ensure that the largely free mobility between the walls 5 and 6 is preserved. However, two webs 15a and 8d are arranged both on the drip ledge 15 and on the sealing lip 8, which overlap in the installed state, ie when the extruded sealing profile is compressed, and obscure the view of the holding part 4.

Claims (7)

Extruded sealing profile for sealing a glass pane (3) arranged in a frame between two circumferential stop ribs (1, 2), with a holding part (4) in the shape of a base on the foot side, which has two approximately parallel outer walls (5, 6), and with a sealing part on the head side (7 ), which has at least one sealing lip (8) running approximately transversely to the outer walls, the outer walls (5, 6) each having a layer with adhesive properties (10, 12) covered with a protective film (9, 11) before use, characterized in that that the layers (10, 12) are made with adhesive properties of a double adhesive tape having disposed on polyethylene foam acrylic adhesive, that the hollow profile in Grobumriß is approximately rectangular and V-shaped at the narrow sides of the rectangular hollow profile connecting webs (13, 14) are provided, the Connect the two outer walls (5, 6), and that the sealing lip (8) has a shape that the pulling out of the protective film (11) e rmossible if the outer wall (6) facing the glass pane (3) is pressed against the glass pane (3). Extruded sealing profile according to claim 1, characterized in that the sealing lip (8) is attached to the head-side end of the outer wall (5) of the holding part (4) facing the stop rib (1, 2) and has a free leg (8a) facing the glass pane. Extruded sealing profile according to claim 2, characterized in that the sealing lip (8) merges into a drip strip (8b) at the end opposite its free leg (8a). Extruded sealing profile according to claim 1, characterized in that the sealing lip (8) is arranged at the head-side end of the outer wall (6) facing the glass pane (Fig. 3). Extruded sealing profile according to claim 4, characterized in that at the head-side end of the outer wall (5, 2) facing the stop rib (1, 2) a drip lip (15) is arranged (Fig. 3). Strand sealing profile according to claims 4 and 5, characterized in that the drip lip (15) and the sealing lip (8) are dimensioned such that they overlap one another in the installed state. Method for producing a tight connection between a stop rib (1, 2) and a glass pane (3) using an extruded sealing profile with a holding part (4) which has two approximately parallel outer walls (5, 12) each provided with a self-adhesive layer (10, 12) 6), on each of which a protective film (9, 11) is arranged for the self-adhesive layer, the extruded sealing profile being fastened to the stop rib (1, 2) by means of the self-adhesive layer, characterized in that the protective film (11) is attached to the glass pane (3) facing outer wall (6) is only pulled off when the two tightly connected parts (3; 1, 2) are fixed in their final position.

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