EP2520749B1 - Foam sealing strip for sealing a window frame and for installing prepared window frame - Google Patents

Description

The invention initially relates to a suitable for sealing a window frame foam sealing strip, which is preferably impregnated for delayed recovery, wherein the foam sealing strip has two opposite, respectively in the installed state of the inside or the outside of the window facing narrow sides and to the plant to the window side or Reveal appropriate broadsides. Furthermore, the invention relates to a window frame used in a window reveal of a house or prepared for installation, wherein the window frame is sealed against a soffit or a soffit element by means of such a foam-sealing strip.

Foam sealing strips of the type in question for sealing a window frame are known. Thus, in this regard, for example, on the EP 1 131 525 B1 directed. In this patent, a sealing strip is shown and described, consisting of an elastically resilient foam material. This strip may be accommodated in a wrapping film designed as a tear film, wherein, if appropriate, after a corresponding opening of the film, the foam sealing strip delays due to an intended impregnation. In this case, a broad side of the foam sealing strip is adhesively bonded to a lateral surface of the window frame facing the reveal of the masonry opening. In the installed state seals the sealing strip with its other broad side against the soffit. The narrow sides of the sealing strip aligned transversely to these broad sides are on the one hand facing the inside and, moreover, the outside of the window.

Furthermore, it is known to adjust sealing strip of the type in question adapted to their installation more or less steam-braking. So come the window outside facing sealing strips are used, which have a lower vapor barrier effect than the inside of the window attributable sealing strips (according to DIN 4108-7).

The EP 0 317 833 A1 describes a sealing element made of foam, with impregnation delayed elastic recovery, in which at each cross-sectional plane only part of the elastically resetting volume inherits the delayed recovery and the remainder consists of closed-cell foam. In view of the above-described prior art, a technical problem of the invention is seen in improving a sealing strip of the type in question in handling technically advantageous training in terms of vapor diffusion behavior on.

This problem is solved first and foremost by the subject matter of claim 1. It is provided that the narrow sides or narrow side areas are formed differently such that in the installed state of the foam sealing strip one narrow side has a higher vapor barrier effect than the other narrow side. According to the invention, the higher vapor barrier effect is achieved by a one-sided higher compression of the foam in the installed state of the foam sealing strip, wherein the higher compression is achieved by a higher material density over the same height of the narrow side. To achieve the higher material density, a lower height than the foam exhibiting additional foam material is provided.

The narrow sides or narrow side regions of the sealing strip are in this case designed differently, that in the installed state, ie at rest after complete recovery of the sealing strip and corresponding sealing abutment against the soffit, the narrow side has a higher vapor barrier effect than the other narrow side. According to this embodiment, a sealing strip is provided, which has particular vapor diffusion advantages. The sealing strip according to the invention is set so that a predefined inside and outside of the same exists. Due to the different adjustment of the vapor braking effect of one and the other narrow side an unequivocal direction of diffusion is given, namely from the side of higher vapor braking effect to the side in comparison to lower vapor barrier effect. Such a set sealing strip can take over the function of a room inside as well as a space outer side arranged strip with a corresponding arrangement. The defined diffusion direction makes this possible. For simplified identification of the differently set narrow sides, these can be clearly marked, for example by color recognition.

Thus, it is further provided that the sealing strip is formed with such a width that the same sealing strip provides both the seal to the room inside and to the outside of the room. The sealing strip therefore combines the known from the prior art single-sealing strips for sealing the room inside and for sealing the room outside. Accordingly, this gives a handling technical advantage, since now only one sealing strip assigned to a window frame leg is to be assigned. The sealing strip preferably extends over approximately the entire thickness of the window frame, wherein further the sealing strip is held in an arrangement on the window frame, for example. By gluing initially in a restored, compressed position, which compression is, for example, released by tearing a wrapping film. The sealing strip may in this case be impregnated in such a way that results in a delayed reset. For visual differentiation of the inside and outside and thus of the different vapor barrier zones, the created integral sealing strip can, for example, be marked in color along its correspondingly set narrow sides, for example.

The invention further relates to a window frame used in a window reveal of a house or prepared for installation, wherein the window frame is sealed relative to a soffit or a reveal element by means of a sealing strip as described above, that a higher vapor barrier effect is formed to the interior of the window frame as the outside space towards and the foam sealing strip is formed in such a width that the same foam sealing strip provides both the seal to the room inside and to the outside of the room.

Window frames of the type in question are known. With regard to the sealing strip to be inserted between the window frame and the reveal, reference is made to the prior art mentioned in the introduction.

In this regard, a technical problem of the invention is seen in a window frame of the type in question, in particular with regard to a simplified assembly continue to improve.

This problem is initially and essentially solved by the subject matter of claim 10, wherein it is provided that the same sealing strip provides both the seal to the room interior and the room outside, that the sealing strip is formed foam-based and that the foam space inside with a higher vapor barrier effect is trained.

According to this embodiment, a window frame of the type in question is created, which is characterized in particular by a simplified assembly. It requires according to the proposal of the invention only the arrangement of a sealing strip, assigned to the soffit facing frame narrow side. The sealing strip preferably extends over approximately the entire thickness of the window frame. The sealing strip is preferably held by gluing to the window frame further initially in a restored, compressed position, which compression is released in a possible embodiment by tearing open a wrapping film. The sealing strip fulfills the requirement according to DIN 4108-7, according to which a higher vapor barrier effect must be given to the interior of the room than to the outside of the room. This is achieved in the present case by only one sealing strip, which is further adjusted in particular room interior side according to obtain the higher vapor barrier effect.

The subjects of the further claims are explained below with reference to the subject-matter of claim 1 or the subject-matter of claim 10, but may also be significant in their independent formulation.

The higher vapor barrier effect is achieved by a one-sided higher compression of the foam in the installed state, namely by a higher material density over the same height of the narrow side. This higher material density or the higher compression is in the installed state, ie in the rest state of the sealing strip after a complete recovery and investment against the facing window reveal before. Thus, the foam strip in the fully decompressed state along the narrow side, which later has the higher vapor braking effect, has a substantially greater strength than in that region of the other narrow edge side, and later less vapor-damping region. Due to this accumulation of material along one narrow side, an increased material density and thus the desired higher vapor barrier effect are achieved in the compressed installation state. The higher material density is achieved by having a lower height than the foam having additional foam material. Thus, in the region of the narrower side having the higher vapor barrier effect, a combination of the actual sealing strip foam material and the additional foam material is created over the height of the strip, which combination further preferably the height of the foam strip generally does not exceed. Thus, the additional foam material may be embedded in strips in the sealing strip foam. This additional foam material may further consist of the same material as the other foam strip. The embedding of this additional strip is carried out by compressing the associated strip portion of the sealing strip foam material, according to which there is an increased material density in the associated narrow edge region. As a further alternative, the additional foam material may also be a closed-cell foam, compared to the generally open-pore configuration of the sealing strip foam material.

In addition, the higher material density can also be achieved in that part of the height is formed by means of a solid strip, for example plastic strip, with the same foam height of the expanded foam material. This strip can be an integral part of the sealing strip, is fed accordingly in the course of the production of the sealing strip of the corresponding narrow edge side, for compression of the relevant foam area, which causes the desired increased vapor barrier effect. This strip can also be alternatively positioned between the window frame and sealing strip positioned facing the interior of the room so as to partially, facing the interior, to reduce the gap between the window frame and facing window reveal, which in turn provides a higher compression of the sealing strip foam material in the interior of the room ,

In a further alternative embodiment, the solid bar may extend over the entire, suitable for engagement with the window side or soffit broadside and have to achieve a different material density of the foam across the width zones of different bar strengths. Such profiled in cross-section bar carries a foam which viewed in the expanded position over the broad side has the same foam height. In function assignment, ie in the arrangement between a soffit and a window frame of the foam is less compressed in the region of a profile forming a valley portion of the solid bar than in a comparison in this case an increase forming zone of the bar, in which area a relatively high compression of the foam material is reached. Also such a profiled in cross-section bar can be supplied in the course of the production of the sealing strip of the corresponding broad side of the foam, so on, for example, be sprayed. As a result, the strip thus formed is present as an integral part of the sealing strip.

With regard to the different vapor barrier effect of the foam toward the room interior and the interior, it is preferably provided that the area of the foam defining the room interior vapor braking effect has a water vapor diffusion resistance value, also sd value, corresponding to 2 to 150 times the water vapor diffusion value of the water vapor diffusion value Room outside vapor barrier effect defining area corresponds. Thus, for example, a room interior value is selected which is 2 to 50 times, for example 7, 10, 13 or 25 times, for example 27, 32, 35 or 43 times corresponds to the space outside value. With the water vapor diffusion resistance value, the ability of water vapor permeability of building materials, etc. is described, wherein the diffusion resistance of a layer, the air layer thickness in meters is given, which would oppose the diffusion of the same resistance as the relevant layer. The different water vapor diffusion resistance values to the areas facing the room outside or inside the room are by measurements eg. From the core of the foam outwards into the assigned areas or by measurements of a separate and thus only either a room outside attributable area or a room inside assignable area having foam Determine sealing strip. With respect to the area of the foam-sealing strip defining the space outside vapor barrier effect, a water vapor diffusion resistance value between 0.1 and 10 m is provided, more preferably between 1 and 5 m.

The proposed integral foam sealing strip is preferably positioned between a window frame and the associated window reveal. Such a sealing strip can also be arranged between a window frame and an associated reveal element for a window opening, which reveal element is used in particular for window renovations. Such a soffit element is, for example, from the DE 10 2004 006 403 A1 known.

Fig. 1:

in schematischer, perspektivischer Darstellung einen rollbaren Schaumstoff Dichtstreifen der in Rede stehenden Art, eine erste Ausführungsform betreffend;

Fig. 2:

die Herausvergrößerung des Bereiches II in Fig. 1 ;

Fig. 3:

den stark vergrößerten Querschnitt durch den Dichtstreifen gemäß der ersten Ausführungsform;

Fig. 4:

eine der Fig. 3 entsprechende Querschnittdarstellung, eine zweite Ausführungs-form betreffend;

Fig. 5:

in schematischer Schnittdarstellung eine Einbausituation eines Dichtstreifens gemäß der in Fig. 4 dargestellten Ausführungsform, angeordnet zwischen einem Fensterrahmen und einer Fensterlaibung;

Fig. 6:

eine weitere schematische Schnittdarstellung eines Einbauzustandes, bei Anordnung eines Dichtstreifens gemäß der Ausführungsform in Fig. 3, bei Anordnung des Dichtstreifens zwischen einem Fensterrahmen und einem zwischen Fensterrahmen und Fensterlaibung angeordneten Laibungselement.

Below, the invention with reference to the accompanying drawings, which illustrates only exemplary embodiments, explained in more detail. It shows:

Fig. 1:

in a schematic, perspective view of a rollable foam sealing strip of the type in question, a first embodiment concerning;

Fig. 2:

the enlargement of the area II in Fig. 1 ;

3:

the greatly enlarged cross section through the sealing strip according to the first embodiment;

4:

one of the Fig. 3 corresponding cross-sectional view concerning a second embodiment;

Fig. 5:

in a schematic sectional view of an installation situation of a sealing strip according to the in Fig. 4 illustrated embodiment, disposed between a window frame and a window reveal;

Fig. 6:

a further schematic sectional view of an installed state, in the arrangement of a sealing strip according to the embodiment in Fig. 3 in the case of the arrangement of the sealing strip between a window frame and a reveal element arranged between window frame and window reveal.

Shown and described is first with reference to Fig. 1 a foam sealing strip 1 in a first embodiment. This is preferably for use in roll form.

The selected foam material is more preferably a flexible polyurethane foam. This is possibly impregnated, so on, for example, by means of Acrylatzusätzen so as to offer the sealing strip with a delayed provision. Accordingly, the sealing strip 1 in storage position corresponding to the above-mentioned EP 1 131 525 B1 be kept in a tearable wrapping film in the compressed state.

Regarding the possible inclusion of the sealing strip in a tear-wrapping film, the content of the EP 1 131 525 B1 directed.

Alternative embodiments provide a sealing strip 1 without tear-off.

The foam sealing strip 1 has a cross section as shown in FIG Fig. 3 on, with two broadsides 2, 3 and two i. W. at right angles to this extending narrow sides 4, 5.

The broad sides 2 and 3 have a length b, which corresponds to a multiple of the measured perpendicular to this length a of the narrow sides 4 and 5 respectively. This is the case both in an optionally present compressed, further possibly enveloped state of the sealing strip 1 and after a return (decompression) of the sealing strip in the installed state. Thus, for example, the length b of the broad sides 2 and 3 in the compressed storage state corresponds approximately to ten times the narrow side length a, while in the installed state, i. in the decompressed idle state a ratio of broad side length b to narrow side length a of about 5: 1 is present.

The foam sealing strip 1 is used to seal a joint between a window frame 6 and the facing window reveal 7. The sealing strip 1 is provided on a broad side 2 with an adhesive layer 8, which is covered in the storage state of a protective film 9, for example. Siliconized film.

By means of this adhesive layer 8, the sealing strip 1 is fixed on the cheek of the fixed window frame 6 which faces the window reveal 7 and extends approximately parallel thereto.

As further in particular from the representations in the FIGS. 5 and 6 to recognize the length b of the sealing strip broad sides 2, 3 adapted to the window frame thickness; Accordingly corresponds approximately to the measured in the same direction extension of the sealing strip 1 bearing cheek of the window frame. 6

The sealing strip 1 seals, possibly after triggering by tearing open a wrapping film and its subsequent delayed return with the window frame 6 facing away from broadside 3 against the window reveal 7.

Due to the selected, adapted to the window frame thickness broad side length b of the proposed sealing strip 1 serves both for sealing to the outside A and for sealing to the inside I of the window frame. 6

The sealing strip 1 is to comply with the requirement known from the RAL that with respect to the vapor barrier effect to the room inside out a higher value must be present as the room outside, adjusted accordingly.

This is in the in the FIGS. 1 to 3 embodiment achieved by increasing the material density of the foam material, facing the inner side I associated narrow side 5 of the sealing strip 1. This zone 10 increased material density is created by embedding an additional foam material 11, which is a closed-cell foam in the illustrated embodiment.

This additional foam material 11 is in strip form, with one of the narrow side 5 of the sealing strip 1 facing narrow edge 12 which extends in the plane of the space inside narrow side 5 of the sealing strip 1. Next, the additional foam material 11 is the corner between inner side narrow side 5 and the window frame 6 facing broad side 2 of the sealing strip 1, wherein the perpendicular to the narrow edge 12 extending widthwise cheek 13 of the additional foam material 11 extends in the plane of the sealing strip broadside 2 ,

The measured in the direction of the narrow side width a height c of the additional foam material 11 corresponds to only a portion of the narrow side length a, so for example. In the illustrated embodiment, about a third to a quarter of the narrow side length a.

The extension length measured perpendicularly to the height h parallel to the sealing strip broad side 2 corresponds approximately to three to five times the material height h.

The additional foam material 11 is embedded in the foam material of the sealing strip 1 and non-detachably connected thereto. According to the cross-sectional configuration of the additional foam material 11, there may be an open-edge pocket in the sealing strip foam material for receiving the additional foam material 11. The required increased vapor barrier effect with respect to the sealing strip narrow side 4 assigned to the outside A is in this case achieved by influencing the cross-section through the insert of the additional foam material 11 in the form of a closed-pore material.

Alternatively, the additional foam material 11 as shown can also be integrated with compression of the soft foam material lying in overlap therewith. By this achieved higher material density compared to the outer narrow side 4, the requirement is achieved according to DIN 4108-7, in which case the additional foam material 11 may also consist of the same open-cell flexible foam material as the remaining sealing strip. 1

Further alternatively, the higher material density in the region of the inner side I associated narrow side 5 can be achieved by a solid trained bar 14, which acts according to the above-described additional foam material 11 on the narrow side 5 associated zone 10. This strip 14 may be arranged on the frame side facing the inside I facing.

Also conceivable is a solution as shown in FIG Fig. 4 in which the strip 14 is embedded in the sealing strip material, regardless of the bar 14 has a height h which is less than the narrow side length a of the sealing strip 1, so on, for example, according to the previously described additional foam material 11 about one third to one quarter of the narrow side length a.

The plastic strip 14 is set to be vapor-impermeable. In connection with the zone 10 of the sealing strip 1 compressed by the action of the strip 14, this leads to the vapor braking effect which is increased in relation to the opposite narrow side 4.

The sealing strip 1 forms an integral sealing element for a fixed window frame 6 according to the selected cross-sectional dimensions and the different vapor permeability values to the outside A and to the inside I.

The sealing strip 1 can, as shown in FIG FIG. 5 adhesively bonded to the window frame 6 directly with the window reveal 7. Alternatively, the arrangement may also be as shown in FIG Fig. 6 be provided, wherein the sealing strip 1 seals against a made of a hard plastic material soffit 16, which, for example, in the window renovation is used.

As an alternative to the described embodiment, in which the sealing strip 1 is present for installation or for arrangement on the window frame in the compressed, optionally foil-packed state, the sealing strip 1 can also be compressed in the course of attaching the sealing strip 1 to the window frame 6.

The proposed sealing strip 1 provides both the combination required for the outside A towards sealing against driving rain, which is usually achieved by the compressed state of rest in the installed state of the sealing strip 1, as well as viewed in the direction of width extension medium density level as thermal insulation, and the required vapor barrier effect or against the Outside increased vapor barrier effect to the room inside out.

Claims (10)

1. Foam sealing strip (1) for sealing a window frame (6), wherein the foam sealing strip (1) is preferably saturated for delayed reset, wherein the foam sealing strip (1) has two opposite narrow sides (4, 5) which each face the inside (I) or outside (A) of the window frame (6) in the installation state of the foam sealing strip (1), and has wide sides (2, 3) suitable for bearing against the window side or reveal (7), wherein the narrow sides (4, 5) or regions of the narrow sides are configured differently such that in the installation state of the foam sealing strip (1), the one narrow side (5) has a higher vapour barrier effect than the other narrow side (4),
   characterised in that
   the higher vapour barrier effect is achieved by a unilaterally higher compression of the foamed material in the installation state of the foam sealing strip (1), the higher compression being achieved by a higher material density over the same height (a) of the narrow side (5), wherein to achieve the higher material density, an additional foamed material (11) having a lower height (h) than the foamed material is provided.
2. Foam sealing strip (1) for sealing a window frame (6), wherein the foam sealing strip (1) is preferably saturated for delayed reset, wherein the foam sealing strip (1) has two opposite narrow sides (4, 5) which each face the inside (I) or outside (A) of the window frame (6) in the installation state of the foam sealing strip (1), and has wide sides (2, 3) suitable for bearing against the window side or reveal (7), wherein the narrow sides (4, 5) or regions of the narrow sides are configured differently such that in the installation state of the foam sealing strip (1), the one narrow side (5) has a higher vapour barrier effect than the other narrow side (4),
   characterised in that
   the higher vapour barrier effect is achieved by a unilaterally higher compression of the foamed material in the installation state of the foam sealing strip (1), the higher compression being achieved by a higher material density over the same height (a) of the narrow side (5), wherein to achieve the higher material density, a part of the height (a) of the narrow side (5) is formed by means of a solid bar (14).
3. Foam sealing strip (1) according to claim 1, characterised in that the additional foam material (11) is embedded as a strip in the sealing strip foamed material, wherein this additional strip (11) is embedded by compression of the assigned strip portion of the sealing strip foamed material, as a result of which a higher material density is present in the assigned narrow edge region (4, 5).
4. Foam sealing strip (1) according to one of claims 1 or 3, characterised in that the additional foamed material (11) consists of the same material as the other foamed material strip.
5. Foam sealing strip (1) according to one of claims 1, 3 or 4, characterised in that the additional foamed material (11) is present in strip form, with a narrow edge (12) which faces the narrow side (5) of the foam sealing strip (1) and runs in the plane of the narrow side (5) of the foam sealing strip (1) on the room inside, wherein the additional foamed material (11) is arranged in the corner region between a narrow side (5) on the room inside and the wide side (2) of the foam sealing strip (1) facing the window frame (6), wherein the wide cheek (13) of the additional foamed material (11) running perpendicularly to the narrow edge (12) extends in the plane of the sealing strip wide side (2).
6. Foam sealing strip (1) according to any of claims 1 to 5, characterised in that the region of the foamed material defining the vapour barrier effect on the room inside has a water vapour diffusion resistance value (Sd value) which corresponds to 2 to 150 times the water vapour diffusion resistance value of the region defining the vapour barrier effect on the room outside.
7. Foam sealing strip (1) according to claim 6, characterised in that the water vapour diffusion resistance of the region defining the vapour barrier effect on the room outside is between 0.1 and 10 m.
8. Foam sealing strip (1) according to claim 2, characterised in that the solid bar (14) is a plastic bar (14).
9. Foam sealing strip (1) according to claim 2, characterised in that the solid bar (14) is profiled such that different profile heights result when viewed over the extent of the wide side (2).
10. Window frame (6) inserted in a window reveal (7) of a house or prepared for installation, wherein the window frame (6) is sealed against a reveal (7) or a reveal element (16) by means of a foam sealing strip (1) according to any of claims 1 to 9 such that a higher vapour barrier effect is formed towards the room inside (I) of the window frame (6) than towards the room outside (A), and that the foam sealing strip (1) is formed in such a width that the same foam sealing strip (1) provides the seal both towards the room inside (I) and towards the room outside (A).

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