DE102012102514C5 - door leaf - Google Patents

Abstract

Door leaf, with a frame structure, a first, weather-side cover plate, a second, room-side cover plate and a filling layer arrangement arranged between the first cover plate and the second cover plate and which is elastically flexible at least in relation to the first cover plate and the frame structure, the filling layer arrangement having a first filling layer and has a second filling layer, characterized in that at least the first, weather-side cover plate is mechanically connected to the frame structure essentially by the filling layer arrangement, the filling layer arrangement with the first and second filling layers arranged one above the other being between the first, weather-side cover plate and a weather-side The side of the frame structure located on the web extends, the first filling layer has different elastic properties than the second filling layer, the first filling layer being an insulating layer and having a thickness that is greater than that of the second filling layer and the second filling layer being an elastic intermediate layer, and the first filling layer extends over only part of its thickness between the first cover plate and the frame structure.

Description

The present invention relates to a door leaf.

Current state of the art

It is known to form a layer structure for a door leaf with a support frame, two cover plates, which span over the support frame and define a cavity between them. The cavity is often filled with an insulation board such as PU foam, polystyrene foam (XPS foam), rigid foam, Styrofoam or the like. The cover plates and the support frame are often made of aluminum or an aluminum alloy or another metal, with the support frame being formed as a hollow profile and the cover plates being formed as thin plates. The cover plates are either glued directly to the support frame or connected to the support frame by a holding structure, which holds the cover plates at a certain distance from the support frame. The holding structure also ensures a visually appealing finish and protects the layer structure against dirt, moisture, etc. on the narrow sides.

For exterior doors, one side of the door is defined as the weather side and the other side as the room side. When exposed to sunlight, the weather-side cover plate can heat up and expand. To reduce mechanical stresses between the weather-side cover plate and the insulation board, a holding structure for connecting the weather-side cover plate to the support frame can be made of a plastic material in order to avoid excessive heating of the support frame and a room-side cover plate that may be glued directly to it.

With such layered structures it has been observed that distortion of the support frame on the room side can be considerable when exposed to sunlight. This distortion resembles a bimetal effect with a hot outside and a cold inside, with the sides also being thermally insulated.

From the DE 203 14 017 U1 a door panel is known with a core made of a thermally insulating material and two outer cover layers with a smaller thickness than the core, the panel being provided at least on one side with a stress-absorbing compensating layer arranged between the cover layer and the core. The filling plate can be firmly inserted into a frame made of hollow profiles, with the outer cover layers extending over the frame. The compensation layer is made of an expandable and compressible material such as cellular rubber, which changes its volume when stress is applied. This is intended to reduce thermal stresses and reduce distortion of the filling plate and also the frame.

From the DE 201 02 789 U1 is a door leaf for a house entrance door with a multi-layer outer layer and an inner layer, which is formed from a low-warping frame made of aluminum and a multi-layer filler, the outer surfaces of which preferably lie in one plane. Spacers and a permanently elastic layer that simultaneously acts as an adhesive are arranged between the inner layer and a carrier layer of the outer layer. The permanently elastic layer consists of silicone strips arranged crosswise or in a grid-like manner and is intended to absorb the different expansions of the inner layer and the outer layer in order to prevent warping, distortion and damage to the outer layer.

In the DE 20 2009 014 834 U1 a door is revealed. This door includes a casement frame. The sash frame is designed, for example, as a plastic hollow profile with a strip clipped onto one side of the room. The door panel is constructed in three layers in a sandwich structure, with an outer panel on the outside and an inner panel on the room side, between which a core is arranged. The core is made, for example, from a heat-insulating plastic foam. According to this door it is provided that the outer panel completely covers the sash frame on one outside. For this purpose, the outer plate has a projection that protrudes from the core and the inner plate. This overhang of the outer panel is glued over the entire surface to the outside of the sash frame using an adhesive layer in the form of double-sided adhesive tape. The double-sided adhesive tape can be formed from a carrier made of foamed plastic material, which is coated on both sides with acrylate-based adhesive.

In the DE 198 24 473 A1 a front door and a door panel for such a door are disclosed. The front door includes an outer layer and an inner layer, with thermal and acoustic insulation provided between the two layers. Furthermore, a protruding edge area is provided on the outer layer. The door panel is attached to the outside of a sash frame profile via this edge area. In the area of this edge, an elastic layer is provided between the inner surface of the outer layer and a profile section. The elastic layer is connected to the inner surface of the outer layer, for example by means of adhesive. Furthermore, the elastic layer is connected to the profile section via an adhesive.

The lower the heat transfer coefficient of a door leaf, the greater the temperature difference between the inner and outer cover plates, and the more noticeable the warping effect described above. With highly insulated doors, the balancing effect of the compensation layer or the permanently elastic layer is no longer sufficient to prevent warping effects on the frame or on the inner cover plate, which is usually made of steel, aluminum, plastic such as. B. PVC hardboard or wood are made to sufficiently prevent or reduce.

Summary of the invention

The object of the present invention is to avoid the disadvantages of the prior art. In particular, an object of the invention is to avoid or further reduce distortion of the support frame in the layer structure of a door when one side of the door is heated.

At least some of the above-mentioned tasks are solved by the features of the independent claims. Preferred embodiments and further developments of the invention, which solve specific sub-tasks, form the subject of the subclaims.

According to one aspect of the present invention, a door leaf is proposed with a frame structure, a first, weather-side cover plate, a second, room-side cover plate and a door leaf arranged between the first, weather-side cover plate and the second, room-side cover plate, at least in relation to the first cover plate and the frame structure elastically resilient filling layer arrangement, the filling layer arrangement having a first filling layer and a second filling layer.

The present invention is characterized in that at least the first, weather-side cover plate is mechanically connected to the frame structure essentially by the filling layer arrangement, the filling layer arrangement with the first and second filling layers arranged one above the other being between the first, weather-side cover plate and a weather-side The side of the frame structure located on the web extends. The first filling layer has different elastic properties than the second filling layer, wherein the first filling layer is an insulating layer and has a thickness that is greater than that of the second filling layer and the second filling layer is an elastic intermediate layer, and the first filling layer is only above one Part of its thickness extends between the first cover plate and the frame structure.

The proposed layer structure avoids a substantially rigid connection between the first cover plate and the frame structure. If there is a large temperature difference between the side of the first cover plate and the side of the frame structure, thermal expansion of the first cover plate can be absorbed in the elastically more flexible filling layer arrangement with the first and second filling layers and a transfer of such thermal expansion to the frame structure can be avoided. In addition, the filling layer arrangement causes thermal separation or insulation of the frame structure from the first cover plate.

Since the filling layer arrangement has at least a first filling layer and a second filling layer, different properties of different materials, for example with regard to thermal insulation, the connection (such as adhesiveness or adhesion) with metals, sound insulation (such as different filter properties) or the like can be advantageously exploited and combined.

Furthermore, since the filling layer arrangement with the first and second filling layers extends between the first cover plate and the frame structure, connecting the filling layer arrangement to the frame structure is particularly simple, for example by surface bonding, and can and mechanical chipping voltages due to thermal differences between the first cover plate and the frame structure can be effectively reduced.

Providing the filling layer arrangement between the frame structure and the first, weather-side cover plate results in good thermal insulation.

The door leaf has a structure such that the first filling layer has different elastic properties than the second filling layer, the first filling layer being an insulating layer and having a thickness that is greater than that of the second filling layer, and the second filling layer being an elastic intermediate layer is. In this way, thermal and mechanical decoupling between the first cover plate and the frame structure can be effectively controlled.

In one embodiment of the invention, the door leaf is designed such that the first filling layer only extends over part of its thickness between the first cover plate and the frame structure. This measure allows the total thickness of the door leaf to be limited at a thickness of the first filling layer, which can be an insulating layer, which is predetermined by certain insulating properties, and at the same time ensures sufficient thermal and mechanical decoupling between the first cover plate and the frame structure.

The filling layer arrangement is formed in the area between the frame structure and the cover plate with a thickness of at least 10 mm or 20 mm, preferably at least 25 mm or 30 mm or 35 mm or 40 mm or 50 mm. The thicker the filling layer, the better the thermal and mechanical decoupling between the frame structure and the first cover plate.

Preferably, the filling layer arrangement is also bonded to the first cover plate and/or the second cover plate over the entire surface, preferably to at least 70%, in particular to at least 80% of the contact surface, particularly preferably over the entire surface.

In a preferred embodiment, the second cover plate is connected directly to the frame structure, in particular over the surface, preferably to at least 70%, in particular to at least 80% of the contact surface, particularly preferably glued to it over the entire surface.

In an alternative preferred embodiment, an offset is provided between the second cover plate and the frame structure, with an outer surface of the second cover plate preferably receding behind an outer surface of the frame structure and the offset being compensated for by an elastic arrangement.

In particular, the first filling layer and the second filling layer have a foam structure, with the foam structure of the second filling layer preferably having a smaller cell size than the foam structure of the first filling layer. The first filling layer can be made of PU or XPS foam and the second filling layer can be made of cellular rubber.

Particularly preferably, the side of the first cover plate is provided as a weather side of the layer structure.

For the purposes of the invention, a weather side is understood to be that side of a door which, in the case of an external door, faces the open environment and can be subject to weather-related temperature fluctuations. The weather side can also be understood as a side of the door that is subject to larger temperature fluctuations for reasons other than weather influences, such as a side of a boiler room, a cold room, a laboratory or test room. As a counterpart to the weather side, a room side is to be understood as a room that should not be subject to major temperature fluctuations or should be protected from conditions beyond the room, i.e. from conditions on the so-called weather side. This understanding of the weather side and the room side should also apply if a closed room predominates on the so-called weather side.

If a weather side of a door is exposed to temperature fluctuations or constant but extreme temperatures, i.e. temperatures that differ considerably from room temperature, with a layer structure designed in this way, warping of the door leaf compared to a frame can be avoided or at least reduced, since a frame structure faces away from the weather side is mechanically and thermally decoupled from the cover plate arranged on the weather side.

The door leaf according to the invention can be designed such that the door leaf has a heat transfer coefficient of at most 0.9 W/(m ² K), preferably at most 0.7 W/(m ² K), particularly preferably at most 0.65 W/(m ² K), in particular about 0.64 W/(m ² K).

Furthermore, the door leaf according to the invention can, for example, be designed such that the second cover layer has a thickness of approximately 2 to 12 mm, preferably approximately 3 to 8 mm, particularly preferably approximately 4 to 6 mm, with a total thickness of the cover panels and the filling layer arrangement preferably being approximately 60 to 125 mm, in particular about 70 to 110 mm, particularly preferably about 80 to 95 mm.

The invention is also directed to a door for closing a room or a building, with a frame and a door leaf, the door leaf being designed as described above, with the first cover plate facing away from the room or the interior of the building and the second cover plate faces the room or the interior of the building. The term “door leaf” refers to any type of door or gate leaf. The term “door leaf” is therefore not limited to front doors.

The frame structure is preferably made of aluminum. However, it can also be made of wood or plastic or another metal.

Brief description of the drawings

• 1 veranschaulicht in einer schematischen Ansicht eine Einbausituation einer einflügeligen Tür;
• 2 veranschaulicht in einer schematischen Ansicht eine Einbausituation einer zweiflügeligen Tür;
• 3 veranschaulicht in einer schematischen Schnittansicht entlang einer Linie „III“ in 1 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einem Ausführungsbeispiel der Erfindung;
• 4 veranschaulicht in einer schematischen Schnittansicht entlang einer Linie „IV“ in 1 den Schichtaufbau nach dem gleichen Ausführungsbeispiel im Bereich einer Schwelle;
• 5 veranschaulicht in einer schematischen Schnittansicht entsprechend 3 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einer Abwandlung;
• 6 veranschaulicht in einer schematischen Schnittansicht entsprechend in 4 den Schichtaufbau nach der gleichen Abwandlung im Bereich einer Schwelle;
• 7 veranschaulicht in einer schematischen Schnittansicht entsprechend 3 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einem weiteren Ausführungsbeispiel der Erfindung;
• 8 veranschaulicht in einer schematischen Schnittansicht entsprechend 3 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einem nicht zur Erfindung gehörenden Vergleichsbeispiel;
• 9 veranschaulicht in einer schematischen Schnittansicht entsprechend 3 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einem weiteren nicht zur Erfindung gehörenden Vergleichsbeispiel;
• 10 veranschaulicht in einer schematischen Schnittansicht entsprechend 3 einen Schichtaufbau eines Türblatts im Bereich einer dazugehörigen Zarge nach einem weiteren nicht zur Erfindung gehörenden Vergleichsbeispiel;
• 11 veranschaulicht in einer schematischen Ansicht geometrische Beziehungen und Messwerte bzw. -punkte an einer einflügeligen Tür.

Further aspects, advantages and features of the present invention will become apparent from the following description and the accompanying drawings of a particularly preferred embodiment of the invention.

• 1 illustrates an installation situation of a single-leaf door in a schematic view;
• 2 illustrates in a schematic view an installation situation of a two-leaf door;
• 3 illustrated in a schematic sectional view along a line “III” in 1 a layer structure of a door leaf in the area of an associated frame according to an embodiment of the invention;
• 4 illustrated in a schematic sectional view along a line “IV” in 1 the layer structure according to the same exemplary embodiment in the area of a threshold;
• 5 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf in the area of an associated frame according to a modification;
• 6 illustrated in a schematic sectional view according to in 4 the layer structure according to the same modification in the area of a threshold;
• 7 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf in the area of an associated frame according to a further exemplary embodiment of the invention;
• 8th illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf in the area of an associated frame according to a comparative example not part of the invention;
• 9 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf in the area of an associated frame according to a further comparative example not belonging to the invention;
• 10 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf in the area of an associated frame according to a further comparative example not belonging to the invention;
• 11 illustrates geometric relationships and measured values or points on a single-leaf door in a schematic view.

Description of preferred embodiments and modifications

A preferred embodiment of the invention will be explained below with reference to the accompanying drawings.

1 illustrates the installation situation of a single-leaf door in a schematic view. In 1 the door is shown from an outside or weather side.

According to the illustration in 1 is a single-leaf door with a door leaf 1 arranged in a frame 2, the frame 2 being firmly embedded in a wall 3. A threshold 5 is provided in the area of a floor 4. The door leaf 1 is rotatably mounted on the frame 2 with hinges 6, 7. A locking fitting 8 carries a door knob 9 and a lock 10.

From the door leaf 1 is in 1 an outer cover plate 11 and, indicated in dashed lines, a support frame 12 can be seen. The support frame 12 is - without limiting the generality - formed from profile pieces 12i, 12ii, 12iii, 12iv, which are mitred together at the corners. The connection of the profile pieces at the corners 12i with 12ii, 12ii with 12iii, 12iii with 12iv and 12iv with 12i can be achieved by welding, soldering, gluing or by corner connectors without limiting the generality.

2 illustrates the installation situation of a double-leaf door in a schematic view. Again the door is shown from an outside or weather side.

According to the illustration in 2 is a two-leaf door with two door leaves 1a, 1b arranged in a single frame 2, the frame 2 being firmly embedded in a wall 3. A continuous threshold 5 is provided in the area of a floor 4. The door leaf 1a is rotatably mounted on the frame 2 with hinges 6a, 7a, and the door leaf 1b is rotatably mounted on the frame 2 with hinges 6b, 7b. In the double-leaf door shown, the door leaf 1a shown on the right in the figure has a locking fitting 8 with a door knob 9 and a lock 10, while the door leaf 1b shown on the left in the figure has a fitting 13 with a knob 14. The left door leaf 1b can be locked via locking bolts (not shown) at the top with the frame 2 and at the bottom with the threshold 5. The locking bolts can only be operated from the side of the room not visible in the figure. In a preferred modification, the locking bolts can only be operated when the right door leaf 1a is open.

Otherwise, the structure of the door leaves 1a, 1b corresponds to that in 2 The two-leaf door shown corresponds to the structure of the door leaf 1 in 1 single-leaf door shown.

3 illustrated in a schematic sectional view along a line “III” in 1 (or 2 ) a layer structure of a door leaf 100 in the area of an associated frame 2 according to an exemplary embodiment of the invention. In 3 Only those parts of the frame 2 are shown that may be important for understanding the invention. The frame 2 can have additional parts than those shown for wall connection. In the figure, R denotes a room side and W denotes a weather side.

As already mentioned, the door leaf 100 has a circumferential support frame 12 and a weather-side cover plate 11. Of the support frame 12, only the lock-side profile piece 12i is visible in the cut section shown in the figure. If we also talk about the support frame 12 in general below to describe functions and relationships to other components, these functions and relationships are exemplified in the figure by the profile piece 12i. The support frame 12 or its profile pieces are made of an aluminum alloy, preferably aluminum. In variants, the support frame can also be made of steel, plastic, wood or another material. The support frame profile can be described roughly as a rectangular tubular profile or solid profile with some extensions, indentations, projections and other profiles. On the support frame (support frame profile) 12 there is therefore a room-side web 12r, which points towards the room side R, a frame-side web 12z, which points towards the frame 2, a weather-side web 12w, which points towards the weather side W, and a leaf-side one Web 12b, which points to the inside of the door leaf 100, is distinguished. A cantilever section 12k projects from the room-side web 12r towards the frame 2.

The door leaf 100 also has a room-side cover plate 15, which is connected flatly to the room-side web 12r of the support frame 12 at a joint seam 16. The cover plate 15 is made of an aluminum alloy, preferably aluminum. In variants, the room-side cover plate can also be made of steel, plastic or another material. In the exemplary embodiment shown, the joining seam 16 is a glued seam. In modifications, a connection between the room-side cover plate 15 and the support frame can also be achieved by welding, soldering, screwing, riveting or other means.

An insulation board 17 extends between the room-side cover plate 15 and the weather-side cover plate 11. The insulation plate 17 is made of PU foam, XPS (polystyrene) foam or the like. The insulation board 17 is glued over the entire surface to the room-side cover plate 15 and borders on the leaf-side web 12b of the support frame 12. The insulation board 17 extends beyond the leaf-side web 12b of the support frame 12 in the direction of the frame 2, lies against the weather-side web 12w of the support frame 12 and is also connected to the weather-side web 12w of the support frame 12 at a joint seam 18. In the present exemplary embodiment, no bonding is provided at a joint 19 between the intermediate layer 17 and the leaf-side web 12b of the support frame 12. In variants, gluing can also be provided here.

Towards the weather side W, the insulation board 17 is adjoined by an intermediate layer 20, which is glued to the insulation board 17 over the entire surface. The layer structure is completed by the weather-side cover plate 11 towards the weather side W, the weather-side cover plate 11 being glued over the entire surface to the intermediate layer 20. The intermediate layer 20 is made of cellular rubber.

Towards the frame 2, the layer structure of the door leaf 100 is completed by a cover profile 21. The cover profile 21 is made of polyamide and has two clamping webs 21a, 21b and a sealing bead 21c. The clamping webs 21a, 21b encompass the insulation board 17 and clamp themselves in the insulation board 17 with barb-like profile sections 21d.

The support frame profile 12 is closed towards the frame with a cover band 22. The cover band 22 is made of galvanized steel and is screwed to the support frame 12. In embodiments not shown in detail, the cover band can serve as a support or guide for functional elements such as hinge fittings, locking bolts, lock latches, latches or the like. Furthermore, the shroud 22 can be made of aluminum, plastic or another material if its technical function allows this.

A weather-side profile 23 and a room-side profile 24 of the frame 2 are shown in the figure. A weather-side panel 25 adjoins the weather-side profile 23 on the side facing away from the door leaf 100, and a room-side panel 26 adjoins the room-side profile 24 on the side facing away from the door leaf 100. The profiles 23, 24 are made of aluminum in the present exemplary embodiment. The panels 25, 26 are made of plastic in the present exemplary embodiment. The room-side panel 26 is connected to the room-side profile 24 via a connecting piece 27, while the weather-side panel 26 is inserted directly into a corresponding recess in the weather-side profile 23.

The room-side profile 23 and the weather-side profile 25 are connected by connecting webs 28, 29. The connecting webs 28, 29 are made of polyamide. They form a kind of four-bar linkage in the profile cross section, which allows a certain flexibility of the frame structure, especially during assembly. A filler 28a is arranged on one of the connecting webs 28 between the connecting webs 28, 29. The connecting web 29 has a sealing bead 29a, against which the sealing bead 21c of the cover web 21 rests when the door is closed.

There are also a room-side door seal 31 and a weather-side door seal 32 provided. The room-side door seal 31 has a clamping section 31a, which sits in a correspondingly profiled groove on the cantilever section 12k of the support frame profile 12. Furthermore, the room-side door seal 31 has a sealing lip 31b, which rests against the room-side profile 24 of the frame 2 when the door is closed. The weather-side door seal 32 is constructed like the room-side door seal 31. Its clamping section 32a sits in a correspondingly profiled groove in the weather-side cover 23 of the frame 2, and its sealing lip 32b lies against the weather-side cover plate 20 of the door leaf 100 when the door is closed.

4 illustrated in a schematic sectional view along a line “IV” in FIG. 100 (or 2 ) the layer structure after the in 3 illustrated embodiment in the area of a threshold 5. Although the threshold 5 embedded in the floor 4 is not described in more detail, some special features of the structure of the door leaf 100 in the area of the floor should be pointed out.

First of all, it should be mentioned that a web 12z of the profile piece 12ii of the support frame profile 12 located here, which faces the threshold 5 or the floor 4, corresponds to the other profile pieces 12i, 12iii, 12iv (see also 1 ) is also referred to here as the frame-side web 12z, since the threshold is 5 in Referring to its relative geometric position to the door leaf 100 can be understood as the correspondence of the frame 2.

On a profiled section of the frame-side web 12z, instead of the end band 22, a bottom seal 33 is provided, which is screwed into the frame-side web 12z of the profile piece 12ii using screws.

As a further special feature, a weather strip 35 is provided on the lower edge of the weather-side cover plate 11. The weatherboard 35 is an aluminum profile part, but can also be made of plastic in modifications. The weatherboard 35 rests on a weatherboard support 36, which is screwed to the door leaf 100 together with the weatherboard 35 using screws 37. The weather leg support 36 is made of polyamide and has a sealing lip 36a on its underside, which, together with an unspecified contact edge of the threshold 5, fulfills the function of the weather-side door seal 32 (which is not present here). 3 ) Fulfills.

Based on 5 and 6 A modification of the exemplary embodiment described above will now be explained. Illustrated 5 in a schematic sectional view accordingly 3 a layer structure of a door leaf 200 in the area of an associated frame 2, and 6 illustrated in a schematic sectional view according to in 4 the layer structure in the area of a threshold 5.

The door leaf 200 of this modification is similar to the door leaf 100 of the embodiment described above, but has some differences which will be explained below.

In this modification, the room-side cover plate 15 is not glued to the room-side leg 12r of the support frame 12. Instead, the room-side cover plate 15 is set back a distance a inwards with respect to a thickness direction (see thickness t) of the door leaf 100.

In a correspondingly profiled only on the leaf-side leg 12b of the support frame 12 sits a clamping profile 37, which is prepared to accommodate a rebate seal (not shown in detail) and would press it against the room-side cover plate 15 when installed.

As in the previously described exemplary embodiment, the insulation board 17 is glued in a joint seam 18 to the weather-side web 12w of the support frame 12.

In this modification, the cover profile 21 ( 3 ) replaced by a web 21* or seal, which sits in a correspondingly profiled groove in the support frame 12 and is glued to the weather-side cover plate 11 on the other side.

The web 21* has no sealing bead; Likewise, the connecting web 29 of the frame 2 arranged opposite it has no sealing bead (cf. 21c, 29a in 3 ). Instead, an intermediate door seal 39 is provided, which is constructed like the door seals 31, 32 and sits in a further profiled section of the support frame 12 and rests against the frame profile 24 on the room side when the door is closed.

On the side of the frame 2, not only does the connecting web 28 have a filler body 28a, but the connecting web 29 also has a filler body 29a, which projects into the cavity created by the frame profiles 23, 24 and the connecting webs 28, 29.

In this modification, both the frame-side web 12z of the support frame 12 and an opposite web of the frame profile 24 are essentially smooth, and no shrouds are provided there (cf. 22, 30 in 3 ).

In the area of the threshold 5 there are also some differences compared to the previously described exemplary embodiment, which are now based on 6 be explained.

In 6 a threshold profile 40 is shown, which is anchored in the ground (not shown in detail). In the profile grooves of the support frame 12, in which the room-side door seal 31 and the intermediate door seal 39 sit on the other sides of the door leaf 100 (cf. 5 ), there is a Z-profile 41 on the bottom shaped clamping sections. The Z-profile 41 has a sealing bead 41a, which rests on an edge of the threshold profile 40 when the door is closed.

On a substantially flat surface, which is formed on the bottom side by the web 21 * and the support frame 12, an end profile 42 is attached, e.g. B. glued. Another profile piece 43 is attached to the end profile 42, e.g. B. screwed. The profile piece 43 has a sealing bead 43a, which rests against another edge of the threshold profile 40 when the door is closed.

7 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf 101 in the area of an associated frame 2 according to a further exemplary embodiment of the invention.

This exemplary embodiment is a modification or combination of the door leaves described above, and the construction principles apparent from those essentially apply to the present exemplary embodiment, unless something different is said in the explanation of the modified features below.

In this exemplary embodiment, the room-side cover plate 15 is as in connection with 3 described glued to the room-side leg 12r of the support frame 12. The cover profile 21 of the door leaf 100 is also provided with a sealing bead 21c and the connecting web 29 of the frame 2 is provided with a sealing bead 29a, which rest against each other when the door is closed. Additionally is how related to 5 described, an intermediate door seal 39 is provided, which rests on an edge of the frame profile 24.

Effect of the invention

What the layer structures of the door leaves 100, 101 and 200 according to the embodiments and modifications described above have in common is that a mechanical connection between the weather-side cover plate 11 and the support frame 12 takes place by directly gluing the insulation board 17 to the support frame 12. In the case of the door leaves 100 and 101, a polyamide profile 21, which is essentially supported by the insulation board 17, is provided as a lateral, also optical, end of the layer structure, while in the case of the door leaf 200, the modification is provided 5 and 6 an aluminum web 21* is provided, which is clamped to the support frame 12 and glued to the weather-side cover plate 11.

For the door leaves 100, 101, 200 of the exemplary embodiments and modifications according to 3 until 7 A simple layer structure is provided, since the insulation board 17 establishes a mechanical connection between the weather-side cover plate 11 and the support frame 12, with the cover profile 21 or the web 21 * essentially for the visual completion of the layer structure to the side and as protection against penetrating dirt , moisture etc. are provided. Furthermore, sufficient thermal decoupling of the weather-side cover plate 11 from the support frame 12 is ensured, since the insulation board 17, which is made of PU foam, XPS foam or the like, is a good heat insulator and other components that may be between the weather-side Cover plate 11 and the support frame 12 are arranged, are overall either made of a poor heat conductor (cellular rubber intermediate layer 20, polyamide profile 21) or have a small heat transfer surface (aluminum web 21 *).

A door with a total dimension of 1300 × 2400 mm with a door leaf according to the invention with a total thickness of 88 mm and a structure according to 1 , 3 and 4 was subjected to thermal analysis. Aluminum profiles were used for frame 2, threshold 5 and support frame 12, with the visible width in the frame area being 128.4 mm and at the threshold 100 mm. The sealing system included a stop seal, a middle seal and two overlap seals in the frame area, and a stop seal, a middle seal and an overlap seal in the threshold area. The aluminum profiles of frame 2 and threshold 5 were thermally separated from each other by polythermide bars with a thermal conductivity of 0.15 W/(m K) and filled with XPS rigid foam with a thermal conductivity of 0.035 W/(m K). The weather-side cover plate 11 consisted of an aluminum sheet 3 mm thick, the room-side cover plate 15 made of an aluminum sheet 2 mm thick, the insulation panel 17 made of PU foam 79 mm thick with a thermal conductivity of 0.032 W/(m K), and the Intermediate layer 20 made of cellular rubber 4 mm thick with a thermal conductivity of 0.06 W/(m K). The calculation resulted in a heat transfer coefficient according to EN ISO 10077-1:2006-09 of Du = 0.64 W/(m ² K).

When installing a viewing window with triple-pane insulating glazing and a dimension of 244 x 1441 mm, a total thickness of 76 mm and spacers made of Mylar film and silicone foam, the heat transfer coefficient was Du = 0.7 W/(m ² K).

It can therefore be stated that for a door with the layered structure of the door leaf according to the invention, a heat transfer coefficient Du of well below 0.9 W/(m ² K) can be achieved.

At the same time, it has been found that with the door leaf according to the invention with the layer structure described, despite the high thermal insulation, distortion of the support frame 12 and thus the contour of the door leaf 100 on the room side R can be kept to a minimum, even if the weather-side cover plate 11 is due to heating expands. In addition to the lower thermal expansion of the support frame 12 itself due to good thermal decoupling through the insulation board 17, the lower distortion of the support frame 12 can probably, although possibly not only, be attributed to the fact that the distortion of the weather-side cover plate 11 in the insulation board 17, possibly also in the intermediate layer 20, is dismantled and is not transferred to the support frame 12, as could be the case with a stiffer connection between the weather-side cover plate 11 and the support frame 12.

Comparative examples

In order to verify the effect of the invention, various other layer structures were used for comparison 8th until 10 be briefly explained.

8th illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf 300 in the area of an associated frame 2 according to a comparative example.

The layer structure of a door leaf 300 as shown in 8th has a weather-side cover plate 11 made of aluminum, an intermediate layer 20 made of cellular rubber, an insulation plate 17 made of PU foam (alternatively also XPS foam) and a room-side cover plate 15. This layer structure is connected to a support frame 12 as follows: An auxiliary frame 44 is glued to the weather-side cover plate 11. Two connecting webs 45, 46 are arranged (clamped) in corresponding profiled grooves of the auxiliary frame 44 and the support frame 12, which connect the auxiliary frame 44 to the support frame 12. The layered structure of cover panels 11, 15, insulation panel 17 and intermediate layer 20 has a smaller thickness than the total thickness of the weather-side cover panel 11, the auxiliary frame 44, the connecting webs 45, 46 and the support frame 12. The difference in thickness (see also the distance a in 5 ) is bridged on the room side R by a clamping profile 37 and a rebate seal 47. The door gap itself is sealed via a room-side door seal 31, a weather-side door seal 32 and an intermediate door seal 39.

The support frame 12, the connecting webs 45, 46 and the auxiliary frame 44 form a type of four-bar linkage 48 in cross section, which should fundamentally be comparatively soft to deformation in a direction defined as the thrust direction s. Therefore, if a heat flow dQ / dt is applied to the weather-side cover plate 11 and this expands due to thermal expansion in a deformation direction v, which is parallel to the thrust direction s of the quasi-four-bar linkage 48, it could be expected that the expansion of the weather-side cover plate 11 is caught in the quasi-four-bar linkage 48 and is not significantly transferred to the support frame 12.

9 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf 400 in the area of an associated frame 2 according to a further comparative example.

This comparative example is a modification of the previously described comparative example and is constructed in the same way except for the mechanical connection between the weather-side cover plate 11 and the support frame 12 which will be explained below.

According to the representation in 9 An auxiliary frame 44 is glued to the weather-side cover plate 11, and two connecting webs 45, 46 are arranged (clamped) in corresponding profiled grooves in the auxiliary frame 44. Furthermore, two terminal strips 49, 50 are arranged (clamped) in corresponding profiled grooves of the support frame 12. Clamping beads 49a, 50a of the terminal strips 49, 50 can be clicked into correspondingly profiled grooves of the connecting webs 45, 46, whereby the auxiliary frame 44 can be connected to the support frame 12.

In the free space circumscribed by the support frame 12, the connecting webs 45, 46 and the auxiliary frame 44, a thrust body 51 is arranged, which is made of a bimetal. As in the previous comparative example 8th This connection between the support frame 12 and the weather-side cover plate 11 should fundamentally be comparatively soft to deform in the shear direction s, and therefore similar effects should be expected with regard to thermal expansion of the weather-side cover plate 11 in a warping direction v due to an introduced heat flow dQ / dt.

10 illustrated accordingly in a schematic sectional view 3 a layer structure of a door leaf 500 in the area of an associated frame 2 according to a further comparative example.

This comparison example is a modification of the one previously used 8th Comparative example described and is constructed in the same way with the exception of the differences described below.

According to the illustration in 10 the layer structure between the weather-side cover plate 11 and the room-side cover plate 15 only has the insulation board 17, which is glued to the cover plates 11, 15 over the entire surface and on both sides. An intermediate layer is not provided.

In the edge area of the weather-side cover plate 11, a base 52 made of cellular rubber is glued, and an auxiliary frame 44 is glued to this base 52, which has a thinner shape than the auxiliary frame 44 of the in 8th door leaf 300 shown, but together with the base 52 has the same function. Thus, two connecting webs 45, 46 are arranged (clamped) in corresponding profiled grooves of the auxiliary frame 44 and the support frame 12, which, together with the support frame 12 and the auxiliary frame 44, are arranged in connection with 8th Quasi-four-bar arrangement 48 explained, which should basically be comparatively soft to deform in the thrust direction s. Therefore, similar effects should be expected with regard to thermal expansion of the weather-side cover plate 11 in a warping direction v due to an introduced heat flow dQ/dt.

Comparative measurements

11 illustrates in a schematic view positions of measuring points or associated measured values on a door leaf 1 single-leaf door.

In 11 is the door leaf 1 from the same viewing direction as in 1 shown; ie, hinges 6, 7, which are attached to the frame 2, are located on the right in the drawing. In the figure, measured values determined at various measuring points on the door leaf 1 and some geometric reference lines are symbolized.

In the symbols, a letter “B” in the first place means a leaf expansion, a letter “O” means a leaf distortion on the room side of the door leaf and a letter “P” means a filling distortion; Furthermore, a letter “V” means a vertical edge, a letter “S” means a horizontal connecting line and a letter “D” means a diagonal of the door leaf 1.

In the second place, a letter “d” means a bottom edge, a letter “g” means a top edge and a letter “s” means a center of the door leaf 1. A number “1” in the third place, if present, means a closing side, and a number “2” means a hinge side of door leaf 1.

In the context of this invention, a leaf distortion O of the door leaf 1 is of interest. Sash distortion is understood as the distortion of the support frame in relation to the frame (frame). The greatest distortion is to be expected at the top and bottom of the closing-side vertical V1. It is from the frame or frame (in 11 not shown in more detail) positively defined internally.

The comparison measurements were carried out with the five door leaves 100, 200, 300, 400, 500 described above, the essential difference in terms of the layer structure, in particular the connection between the weather-side cover plate 11 and the support frame 12, can be summarized as follows: Door leaf 300: Comparative example with subframe 44 and two polyamide webs 45, 46, which in cross section can be understood as a quasi four-bar linkage 48 ( 8th ); Door leaf 400: Comparative example with auxiliary frame 44, two polyamide webs 45, 46 connected to the support frame 12 via terminal strips 49, 50 and a bimetal thrust body 51 in between ( 9 ); Door leaf 500: Comparative example with a thinner auxiliary frame 44 and two polyamide webs 45, 46, the auxiliary frame 44 being connected to the weather-side cover plate 11 via a cellular rubber base 52 ( 10 ); Door leaf 100: Embodiment of the invention, in which the weather-side cover plate 11 is connected to the support frame 12 essentially via the intermediate layer 20 and the insulation plate 17 ( 3 and 4 ); and Door leaf 200: Modification of exemplary embodiment 100, wherein in addition to the connection via the intermediate layer 20 and the insulation board 17 or as a replacement for a clamped cover profile 21 made of polyamide, an aluminum cover web 21 * is firmly clamped to the support frame 12 and glued to the weather-side cover plate 11 ( 5 and 6 ).

Table 1 below shows a leaf distortion Od1 in mm at the lower corner on the closing side for the various door leaves 100 to 500 at different temperature conditions. Table 1 Od1 -20°C 20°C 40°C 60°C 80°C 300 -0.82 0.22 0.52 1.52 3.22 400 -0.97 0.19 1.39 1.64 2.21 500 -0.69 0.27 1.36 2.22 3.46 100 0.20 0.16 0.12 0.37 0.55 200 0.13 0.26 0.92 1.79 2.32

Table 2 below also shows a leaf distortion Og1 in mm at the upper corner on the closing side for the different door leaves 100 to 500 at different temperature conditions. Table 2 Og1 -20°C 20°C 40°C 60°C 80°C 300 -1.60 1.11 3.35 4.57 5.56 400 -0.66 1.42 2.88 3.52 3.54 500 -1.74 0.12 1.39 3.10 4.70 100 -0.06 0.13 0.85 0.94 0.78 200 0.10 0.26 1.24 3.66 4.16

The temperature information is the temperature of the weather-side cover plate 11. The temperature of the room-side cover plate 15 is 20 °C.

The measurement results show that the leaf distortion on the room side R in the door leaf 100 according to the exemplary embodiment of the invention remains below 1 mm up to 80 ° C, while the distortion in the door leaves 300, 400, 500 according to the comparative examples is several millimeters. In the case of the door leaf 200 according to the modification of the exemplary embodiment of the invention, in which only a thin but relatively rigid and firmly connected web is added between the weather-side cover plate 11 and the support frame 12, it can be observed that the distortion occurs with a positive temperature difference in the The order of magnitude of the comparative examples is. With a negative temperature difference, the door leaf 200 according to the modification also shows significantly less distortion than the comparative examples.

The results of the comparison measurements suggest that the connection between the weather-side cover plate 11 and the support frame 12 in the comparative examples 300, 400, 500 is not as shear-soft as expected. The single but relatively rigid aluminum web 21* in the modification 200 also appears to stiffen the overall structure to such an extent that a considerable distortion occurs on the room side.

In the case of the door leaf 100 according to the exemplary embodiment of the invention, on the other hand, the thermal expansion of the weather-side cover plate 11 appears to be almost completely absorbed in the elastic layers of the insulation board 17 and the intermediate layer 20, so that almost no distortion occurs on the room side.

It is therefore crucial for the invention that the weather-side cover plate is not only mechanically connected to the support frame 12, but essentially through the insulation plate 17. While the intermediate layer 20, which, like the insulation board, is elastically flexible relative to the support frame 12 and the weather-side cover plate 11, is obviously advantageous for the effect of the invention, a rigid connection such as through the aluminum web 21 * or the seal seems to have the effect of the invention to suppress.

The support frame 12 is a frame structure in the sense of the invention. The weather-side cover plate 11 is a first cover plate in the sense of the invention, and the room-side cover plate 15 is a second cover plate in the sense of the invention. The insulation board 17 and the intermediate layer 20 form a filling layer arrangement in the sense of the invention. In particular, the insulation board 17 is an insulating layer in the sense of the invention and the intermediate layer 20 is an elastic intermediate layer. Additional insulating layers and intermediate layers can be provided to form the filling layer arrangement. The PU or XPS foams and cellular rubber mentioned are elastically flexible in relation to the frame structure in the sense of the invention. A clamping profile 37 and a fold seal 47 form an elastic arrangement in the sense of the invention.

Further modifications

All door leaves 100, 101, 200, 300, 400, 500 can be used as door leaf 1 of a single-leaf door ( 1 ) or as door leaf 1a or 1b of a two-leaf door ( 2 ) can be understood.

In a further modification, the construction principle of the door leaf 100 of the first exemplary embodiment can also be combined with a cover plate 15 that is offset from the support frame 12, as described in connection with the modification 200, which can also cause the door leaf to be visually loosened up from the side of the room. Furthermore, in the door leaf 100 of the first exemplary embodiment, an additional door intermediate seal 39 ( 5 ) be provided.

In all exemplary embodiments, components that are made of polyamide can alternatively also be made of polythermide or another suitable plastic. It goes without saying that all of the materials mentioned are to be understood as exemplary information which does not limit the invention per se.

The cover plates 11, 15 can, as mentioned, be made of aluminum, but also made of plastic such as. B. PVC hardboard, fiberglass board, possibly coated, made of wood, made of another metal such as steel, in particular stainless steel, brass, copper or another suitable material. The support frame 12 can, as mentioned, be made of aluminum profiles, but also plastic, stainless steel, wood or another suitable material.

A door leaf structure according to the invention has been described, in which the layer structure of cover panels 11, 15, insulation board 17 and intermediate layer 20 is approximately 88 mm thick, with the intermediate layer 20 being approximately 4 mm thick. It goes without saying that, depending on the requirements for thermal separation and stress reduction, the intermediate layer can also be slightly thicker, for example up to 6 mm, or between 3 and 8 mm, and possibly also between 2 and 12 mm.

Since cellular rubber is very elastic, it can absorb severe distortions. Therefore, the insulation board 17 can be made harder than the intermediate layer 20. In a further modification, the insulation board 17 can be multi-part or multi-layered, with an insulating frame made of thermally insulating material, for example, being arranged in the area between the frame structure 12 and the first cover plate 11. The insulating frame can e.g. B. be a solid plastic body or a harder foam. In this case, it may be that mechanical stresses are reduced more in the intermediate layer 20 than in the insulating layer 17.

In a further modification, the insulation board 17 can also extend between the room-side cover plate 15 and the room-side web 12r of the support frame 12 and be connected to it flatly.

In a further modification, a further intermediate layer made of cellular rubber can be arranged between the insulation board 17 and the support frame 12.

In a further modification, the layer structure can be formed at least partially by directly foaming the insulation board 17 and/or the intermediate layer 20 onto one or both of the cover plates 11, 15 and/or the support frame 12 instead of gluing. That is, an arrangement of weather-side cover plate 11, insulation board 17, intermediate layer 20 and room-side cover plate 15 is also conceivable, with the intermediate layer 20 also being connected to the support frame 12. In other words, the intermediate layer 20 can be provided at any point in the cross section of the layer structure, as long as it also extends together with the insulation board 17 between the support frame 12 and the weather-side cover plate 11.

The insulation board 17 can also be made of a stiffer or harder material in the area between the support frame 12 and the weather-side cover plate 11 than in the rest of the area, in order to give the door leaf a high level of strength.

The invention is defined solely by the claims in the entire breadth of their understanding and is not restricted by further individual features or configurations that are described in the exemplary embodiments and modifications. Features of the exemplary embodiments and modifications are interchangeable with one another.

• In einem Schichtaufbau für ein Türblatt 100, mit einer Rahmenstruktur 12, einer ersten Deckplatte 11, einer zweiten Deckplatte 15 und einer zwischen der ersten Deckplatte 11 und der zweiten Deckplatte 15 angeordneten, wenigstens im Verhältnis zu der ersten Deckplatte 11 und der Rahmenstruktur 12 elastisch nachgiebigen Füllschichtanordnung 17, 20, wobei die Füllschichtanordnung eine erste Füllschicht 17 und eine zweite Füllschicht 20 aufweist, ist wenigstens die erste Deckplatte 11 im Wesentlichen durch die Füllschichtanordnung 17, 20 mechanisch mit der Rahmenstruktur 12 verbunden, wobei die Füllschichtanordnung mit der ersten Füllschicht 17 und der zweiten Füllschicht 20 sich zwischen die erste Deckplatte 11 und die Rahmenstruktur 12 erstreckt.

The invention can be summarized as follows:

• In a layer structure for a door leaf 100, with a frame structure 12, a first cover plate 11, a second cover plate 15 and an elastically flexible one arranged between the first cover plate 11 and the second cover plate 15, at least in relation to the first cover plate 11 and the frame structure 12 Filling layer arrangement 17, 20, wherein the filling layer arrangement has a first filling layer 17 and a second filling layer 20, at least the first cover plate 11 is mechanically connected to the frame structure 12 essentially by the filling layer arrangement 17, 20, the filling layer arrangement being connected to the first filling layer 17 and the second filling layer 20 extends between the first cover plate 11 and the frame structure 12.

List of reference symbols

1

Door leaf (single-leaf door)

1a, 1b

Door leaves (double-leaf door)

2

frame

3

Wall

4

Floor

5

threshold

6

Top hinge

6a, 6b

Top hinges (double door)

7

Bottom hinge

7a, 7b

Lower hinges (double door)

8th

Locking fitting

9

doorknob

10

Lock

11

Weather-side cover plate

12

Support frame

12i, 12ii, 12iii, 12iv

Profile pieces

12b

Leaf-side bridge

12k

Cantilever section

12r

Room-side bridge

12w

Weather-side jetty

12z

Bridge on the frame side

13

fitting

14

knob

15

Room-side cover plate

16

joining seam

17

Filling (insulation board)

18

Joining seams

19

Gap

20

Intermediate layer

21

Cover profile

21a, 21b

clamping bar

21*

Bridge or seal

21c

sealing bead

22

Cover tape

23

Weather side profile

24

Room-side profile

25

Weather-side panel

26

Room-side panel

27

connector

28

connecting bridge

28a

Filling body

29

connecting bridge

29a

sealing bead

29b

Filling body

30

Cover tape

31

Room-side door seal

31a

clamping section

31b

sealing lip

32

Weather-side door seal

32a

clamping section

32b

sealing lip

33

Bottom seal

34

screw

35

Weatherboard

36

Weather leg straps

36a

sealing lip

37

Clamp profile

38

Cover bar

39

Intermediate door seal

40

Threshold profile

41

Z profile

41a

sealing bead

42

Final profile

43

Profile piece

43a

sealing bead

44

Subframe

45, 46

connecting bridges

47

fold seal

48

Quasi-four-bar linkage

49, 50

retaining strips

51

Bimetal thrust body

52

document

100

Door leaf (example)

101

Door leaf (modification)

200

Door leaf (example)

300

Door leaf (comparison example)

400

Door leaf (comparison example)

500

Door leaf (comparison example)

a

Distance (offset)

dQ/dt

Heat flow

s

Thrust direction

t

thickness

v

direction of draft

Vol1

Wing expansion on the closing side at the bottom

Bg1

Wing expansion on the closing side at the top

Bg2

Wing expansion on the top hinge side

D1, D2

diagonals

Pd

Filling distortion at the bottom

Pg

Filling distortion at the top

Ps

Filling distortion in the middle

R

room side

Sd, Sg, Ss

Horizontal connecting lines

Od1

Sash distortion on the closing side at the bottom

Od2

Sash distortion on the bottom hinge side

Og1

Sash distortion on the closing side at the top

Og2

Sash distortion on the top hinge side

V1

Vertical edge on the closing side

V1

Hinged vertical edge

W

Weather page

The above list of reference symbols is an integral part of the description.

Claims (13)

Door leaf, with a frame structure, a first, weather-side cover plate, a second, room-side cover plate and a filling layer arrangement arranged between the first cover plate and the second cover plate and which is elastically flexible at least in relation to the first cover plate and the frame structure, the filling layer arrangement having a first filling layer and has a second filling layer, characterized in that at least the first, weather-side cover plate is mechanically connected to the frame structure essentially by the filling layer arrangement, the filling layer arrangement with the first and second filling layers arranged one above the other being between the first, weather-side cover plate and a weather-side The side of the frame structure located on the web extends, the first filling layer has different elastic properties than the second filling layer, the first filling layer being an insulating layer and having a thickness that is greater than that of the second filling layer and the second filling layer being an elastic intermediate layer, and the first filling layer extends over only part of its thickness between the first cover plate and the frame structure. Door leaf according Claim 1 , characterized in that the filling layer arrangement in the area between the frame structure and the first cover plate has a thickness of at least 10 mm or 20 mm, preferably at least 25 mm or 30 mm or 35 mm, 40 mm or 50 mm. Door leaf according to one of the preceding claims, characterized in that the filling layer arrangement is bonded to the frame structure over the entire surface, preferably to at least 70%, in particular to at least 80% of the contact surface, particularly preferably over the entire surface. Door leaf according to one of the preceding claims, characterized in that the filling layer arrangement is bonded to the first cover plate over the entire surface, preferably to at least 70%, in particular to at least 80% of the contact surface, particularly preferably over the entire surface. Door leaf according to one of the preceding claims, characterized in that the filling layer arrangement is glued flat to the second cover plate. Door leaf according to one of the preceding claims, characterized in that the second cover plate is connected directly to the frame structure, in particular is glued flat to it. Door leaf according to one of the preceding claims, characterized in that an offset is provided between the second cover plate and the frame structure, an outer surface of the second cover plate preferably retreating behind an outer surface of the frame structure and the offset is compensated for by an elastic arrangement. Door leaf according to one of the preceding claims, characterized in that the first filling layer and the second filling layer have a foam structure, the foam structure of the second filling layer preferably having a smaller cell size than the foam structure of the first filling layer. Door leaf according to one of the preceding claims, characterized in that the first filling layer is made from a PU foam or a polystyrene foam. Door leaf according to one of the Claims 1 until 9 , characterized in that the second filling layer is made of cellular rubber. Door leaf according to one of the preceding claims. characterized in that the door leaf has a heat transfer coefficient of at most 0.9 W/(m ² K), preferably at most 0.7 W/(m ² K), particularly preferably at most 0.65 W/(m ² K), in particular approximately 0.64 W/(m ² K). Door leaf according to one of the preceding claims, characterized in that the second cover layer has a thickness of approximately 2 to 12 mm, preferably approximately 3 to 8 mm, particularly preferably approximately 4 to 6 mm, with a total thickness of the cover panels and the filling layer arrangement preferably approximately 60 to 125 mm, in particular about 70 to 110 mm, particularly preferably about 80 to 95 mm. Door for closing a room or a building, with a frame and a door leaf, characterized in that the door leaf with according to one of the Claims 1 until 12 is formed, wherein the first cover plate faces away from the room or the interior of the building and the second cover plate faces the room or the interior of the building.

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