DK165421B - INSULATING PLATE OR COATED MINERAL FIBER PRODUCT - Google Patents

Description

in

DK 165421 B

The invention relates to an insulating sheet or web-shaped mineral fiber product including an elastic head layer of bonded mineral fibers and at least one covering layer.

Such mineral fiber products often obtain a cover layer with respect to surface finishing, e.g. as irrigation protection, clothing or as protection against streaming media. Specified as a covering layer, e.g. according to DIN 52270, page 2, aluminum or plastic foil and foil.

10 There are also a number of insulation sheets in which a main layer of bonded mineral fibers is combined with materially different cover layers in a similar manner as a sandwich. Thus, from Swiss Patent No. 597,453, a sound-absorbing sheet of mineral fibers having a gross density between 70 and 90 kg / m3 is known, which on the visible side has a glass fiber web. The mineral fiber product serving as a ceiling plate has on its reverse side a so-called fiberglass skin, which in the patent refers to a material layer of compressed glass fiber particles with resin 20. In addition to the enhancement of the sound-absorbing properties, the fiberglass skin here must contribute to the stiffening of the sheet, whereby larger sheets can cover larger areas, so that there are fewer joints in the ceiling which can constitute sound leaks.

25 Furthermore, it is known from Austrian patent specification no.

187 640 a mineral fiber product as an insulating plate or insulating web with an elastic main layer of bonded fiberglass and a kind of cover layer of so-called fiberglass bundles which run parallel and at the same distance of e.g. 1-6 cm 30 on the surface of the sheet or web, preferably in its longitudinal direction. With such a type of cover layer, the tensile strength must be increased in the direction of the reinforcement so that this product can be relatively thin and bend with a slight radius of curvature. The latter also applies to the use case mentioned in the patent, i.e. such mineral fiber products are conceivably used for isolation

DK 165421 B

2 of pipes and cables, whereby these mines alf iber products are to be used in particular in connection with bitumen, which makes this product technically combustible.

Finally, from German publication specification 5 no. 33 15 901 a multi-layer lightweight construction plate consisting of a main layer of stone or glass wool having one or two layers of magnesia- or cement-bonded wood wool is known. Apart from the flammability of these products, these are fixed plates that cannot be bent or rolled up.

The invention aims to provide a building technically non-combustible, low-cost mineral fiber product as claimed in the preamble of claim 1, which has the necessary room weight to comply with a certain heat conductivity group according to DIN 18165 (e.g. group 040 or 035), but yet it is so dimensionally stable that a very good handling and attachment of this product is ensured, e.g. using dowels on building walls.

According to the present invention, this task is solved in a simple way by the fact that the main layer has a space weight 20 of ύ 40 kg / m3 and that the cover layer is a flexible, pressure distributing, plastic non-deformable cover layer, which is made of fiberglass cloth having a weight per . area unit of 30-110 g / m2, so that the main layer, despite its relatively small specific weight together with the cover layer, is stable.

An insulating plate or insulating sheet thus constructed has a number of significant advantages over the state of the art in that the mineral fiber layer which serves as the main layer as a result of the laminated covering layer becomes so rigid that it is possible to obtain the room weight for a particular heat conductivity group. i.e. otherwise the higher room weight used, usually to provide a certain stability of the insulation plate or insulation web, is no longer necessary. It is particularly advantageous here if a covering made of glass wool having a weight per head is used as a covering layer. area unit of 30-110

DK 165421 B

3 g / m2. Furthermore, the glass wool should be a vapor-diffusion opener, and its randomly oriented glass fibers should be interconnected for fire-technical reasons by means of a quantity-limited organic binder.

In particular, when using the insulation board according to the invention for back-ventilated facades on buildings, e.g. For a product which is in the thermal conductivity group 040 with a room weight of 15 kg / m3, the same shape stability is obtained as otherwise with a corresponding product without a pressure distributing cover layer with a room weight of 25 kg / m3. In addition to this weight saving, the insulation plate according to the invention also stands out at a high bending stiffness, ie. it does not break with protruding plants, whereby a simpler lay-out on the construction site is possible, e.g. at high wind speeds.

By using the insulation plate according to the invention for back-ventilated facades - hereinafter briefly referred to as the facade insulation plate -, due to the covering layer, a more stable surface on the weather side is obtained simultaneously, so that no fiber wear can occur during the installation or during the operating time. Furthermore, due to the tire on the weather side, any rain during the laying is rejected. Finally, compared to previous facade insulation panels as a result of the improved stiffness, larger dimensions than before have been possible, which reduces the joints and thus also the number of dowels commonly used for fixing the panels. The latter, of course, also applies if the plate size remains the same in relation to previous such plates because the cover layer distributes pressure. Finally, according to the invention, facade insulation panels can better offset unevenness in the surface of the bare facade wall, because the main layer has a smaller room weight than hitherto, ie. with this advantageously 35 building tolerances can be offset.

In the case of forming the mineral fiber product of the invention as an insulating web and here again

DK 165421 B

4 use of the insulation path for a so-called core insulation, ie. as insulation between double building walls, the room weight of the main layer can advantageously be chosen between 10-30 kg / m3, where two preferred products have a room weight of 5 15-25 kg / m3. Here, for a number of advantages such as reduction of transport and storage costs, fewer joints and thus fewer heat bridges, it is advisable to roll the insulation web as a pre-product to a roller that can have a length of 3-10 m. This is again possible 1 o Due to the lower gross density of the main layer compared to previously known products, the main layer being more easily compressible.

Further details and advantages of the invention are explained and described in more detail below on the basis of some embodiments with reference to the drawing, in which: FIG. 1 is a perspective view of a mineral fiber product in the form of a facade insulation plate with a laminated cover layer on one side; FIG. 2 is a section along line II-II of FIG. 3 in a building wall with a back-ventilated facade cladding, used in FIG. 1 shows the facade insulation plate; FIG. 3 is a perspective view of a corner area of a building with a not yet fully finished, back-ventilated facade cladding, used for the embodiment of FIG. 1 shows the facade insulation plate; FIG. 4 is a sectional view of a building double wall which, as a further embodiment, has an insulating web with a laminated covering layer on one side as so-called core insulation felt.

FIG. 1 shows an insulating plate 1 having a main layer 2 and a laminated covering layer 3. The main layer 2 of the insulating plate 11 comprises phenolic resin bonded and hydrophobic glass fibers and in the present case has a so-called facade insulation plate.

DK 165421 B

Preferably a bulk weight of 15 kg / m 2. As a cover layer, a vapor diffusion open glass wool having a weight per area unit of approx. 50 g / m 2, and if glass fibers present in random orientation are connected to each other by means of a quantity-limited organic binder. Of course, the main layer 2 may also be of stone fibers or other mineral fibers.

The insulating plate 1, which in the present embodiment according to Figures 2 and 3, serves to insulate back-ventilated facades, usually has a plate dimension of 1250 x 600 mm, where plate thicknesses incrementally from 30 to 100 mm are suitable, ie. it depends on the present application and on the desired values with respect to the heat-through resistance. Insulation plate 1 is according to DIN 18165 in heat conductivity group 040 and has a high bending stiffness. Furthermore, it meets the requirements of material class A2, which according to DIN 4102 means non-combustible.

FIG. 2 shows a section in a building wall 4, which has a facade-lined exterior cladding 5. Such cladding serves both for thermal insulation and for sound insulation, and in addition it must have an aesthetic appearance. It must fulfill these functions under all ambient conditions and, in addition, does not age over time.

The insulation layer 5 of the facade cladding 5 in Figures 2 and 3 is made up of a number of adjacent insulating plates 1, which are attached to the building wall 4 by means of perpetually known so-called plate devils 6, namely with outward facing cover layer 3. facade cladding, e.g. in the form of panels 7, which are again held by means of suitable anchors 8 on the building wall 4 so that between these panels 7 and the insulation plates 1 there is a ventilation gap 9. Due to the objective accuracy of the insulation plates 1 according to the invention it is possible to

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6 guarantee this ventilation slot 9, e.g. of 2 cm. In addition, due to the shape stability of the insulating plates 1, it is possible to narrow the tolerances applicable so far for such ventilation slots. This also for the reason that, for example, the facade insulation panels used so far, which had no cover layer, had relatively soft plate corners, so that using plate devils 6 in the figures shown in FIG. 3 with 10 designated corner assembly areas could occur that the plate-10 corners slipped off the plate of these devils and thus not only bothered optically at the delivery of the building, but also heat technically constituted fault locations, as did the narrowed ventilation gap 9. These disadvantages are now eliminated by means of it. In accordance with the invention, the covering layer 3 is present because the insulating plates 1, as a result of the covering layer, have an excellent edge strength, so that the insulating plates 1 can be kept impeccable especially in the corner assembly areas 10.

Furthermore, as a result of the existing cover 3, a better mounting control is possible, ie. by the previous "freehand devil phrase" it could not be ruled out that some devils 6 were set too deep. As a result, such insulating sheets were compressed locally too much, thereby reducing the thermal insulation in these areas. They also got a poorer overall picture. On the other hand, at depths 6, which are set too deep, a deformation of the cover layer 3 is made, which becomes visible by the formation of folds and thus enables a better lay-out control.

FIG. 4 shows, as a further embodiment, a double building wall with an inner wall 11 and an outer wall 12, between which is inserted an insulating web 13 with a laminated cover layer 3 on one side as a so-called core insulation blanket. The construction of a two-layer masonry with intermediate mineral fiber heat insulation layers presents, as is well known, due to the clear functional

DK 165421 B

7 separation in support structures, thermal insulation and moisture protection is the ideal building solution for the exterior wall component. In the present embodiment, the insulation web 13 is without any particular air gap between the outer wall 12 and the insulation web 13.

This is possible partly because the main layer 2 of the insulating layer 13 is hydrophobic and partly because the cover layer 3 removes any moisture penetrating downwards through the outer wall 12. The outer shell 12 is held in the usual manner 10 by means of wire anchors 14 on the inner shell 11, where the insulating web 13 is to be inserted on the wire anchors 14 prior to the establishment of the outer shell 12. After the insulating web 13 is placed on the wire anchors 14, so-called drip washers 15 which 15 poem advantageously can be used for setting a certain thickness limitation of the insulation layer 13.

In the present embodiment, the bulk weight of the main layer 2 of the insulating web 13 was advantageously reduced from 23 kg / m3 to 15 kg / m3 by using the cover layer 3 in the form of a glass wool with a weight per square meter. area unit of 50 g / m2, in which case in both cases the requirements for e.g. heat conductivity group 040 is met.

When using a so-called wool-laminated core insulation blanket as insulation between double building walls, it is particularly advantageous to use insulation webs of 3-10 m in length which are rolled into a roll as a by-product. In addition to simplifying the laying and fewer joints and thus fewer heat bridges, it is possible to isolate wall corners without difficulty, because the wool lamination due to its flexibility in relation to the relatively low specific weight of the main layer allows for smooth laying of the insulation web around the wall corners, ie. the path sneaks to these.

In summary, the basic idea of the present invention appears to be a mineral fiber product

Claims (7)

An insulating sheet or web-shaped mineral fiber product including an elastic head layer of bonded mineral fibers and at least one cover layer, characterized in that the head layer (2) has a weight of έ 40 kg / m3 and that the cover layer (3) is a flexible , pressure distributing, plastic non-deformable cover layer, which is made of fiberglass cloth having a weight per area unit of 30-110 g / m2, so that the main layer (2), despite its relatively low specific weight, together with the cover layer (3; 17) is stable to form. DK 165421 B 9 Mineral fiber product according to claim 1, characterized in that the fiberglass cloth (3) is vapor diffusion open and non-combustible. Mineral fiber product according to claims 1 or 2, 5, characterized in that the main layer (2) consists of glass fibers or stone fibers. Mineral fiber product according to one or more of claims 1-3, characterized in that the main layer (2) is provided with a covering layer (3 or 17, 18) on both 10 sides. Mineral fiber product according to one or more of claims 1-4 in the form of an insulation plate (1), in particular intended for insulation of the building's wall facades, characterized in that the main layer (2) has a room weight of 10-30 kg / m3, preferably 15-25 kg / m3. Mineral fiber product according to one or more of claims 1-4 in the form of an insulation web (13), especially intended for insulation in the double walls of buildings, characterized in that the main layer (2) has a specific 20 weight space of the main layer of 10-30 kg / m3, preferably 15-25 kg / m3. Mineral fiber product according to claim 6, characterized in that the insulation web (13) has a length of 3-10 m and is rolled up to a roll.