DE2652952A1 - Sandwich panel suitable for inside of roller shutter housing - has wood wool and cement core between metal and plastics foam layers - Google Patents

Abstract

A lightweight decorative sandwich panel with a core made from wood wool is made by a method of which is also adapted for making the inside surfaces of housings for roller shutter blinds. Liquid cement is mixed with the wood wool, and the product compressed to form the core. This compressing operation can be carried out between adhesive coated metal layers. The adhesive can be bitumen or tar. After removal from the press, the plate can be heated on both sides to a temperature between 100 and 120 deg.C. While still hot, a plastics foam layer is applied and compressed by rollers. A further decorative layer can then be applied.

Description

Process for the production of lightweight

panels, as well as lightweight panels produced by the process.

The invention relates to a method for producing lightweight panels with a core layer of wood wool cement and at least one outer insulating layer, as well as a lightweight panel produced by the method and a use of the Method for manufacturing roller shutter boxes.

It is well known, lightweight panels with a cement-bonded wood wool core layer to be built up in such a way that, after pressing the core layer, a polystyrene coating acts as an insulating layer is foamed. On this insulating layer, if necessary.

still further, acting as a cover under ornamentation applied will. It has been shown that between the polystyrene and the wood wool cement layer there is insufficient adhesion or that the insulating effect of the lightweight panel not corresponds to the general requirements.

In addition, the weight of these lightweight panels is in proportion to their insulating or insulating effect is too great.

Furthermore, roller shutter boxes are known in which at least t the side The cheeks consist of lightweight construction panels and a sheet metal cladding on the outside respectively.

a layer of expanded rib metal is applied. The outside Sheet metal support can only insignificantly increase the insulating effect in this area, Rather, it serves to connect the kolladenkasten more firmly to the building can. In addition, it has been shown that this metal layer is a special Surface treatment must be subjected so that it does not corrode, apart from of this, such a metal layer forms on the outside of a roller shutter box an undesirable cold or heat bridge that has the entire insulating effect of the shutter box cheek significantly lower.

The known methods for making such components are overall complex and expensive, since this requires special devices and the individual Starting materials must be subjected to a complex pretreatment In the knowledge of these disadvantages, the object of the invention is to provide a method enter into, with the light and relatively thin lightweight panels lierges can be divided, whose insulating effect against temperature and noise is essential is better than the insulating effect of known lightweight panels and those of the Cohesion of the individual layers is very strong and durable.

The object on which the invention is based can be achieved with one Solve the method, characterized in that at least on one side of the Core layer during or after its compression molding at least one on both sides with one Heat-sensitive adhesive coated metal layer is applied that the adhesive through Heating is activated and the layer is bonded to the core layer under pressure is, and that the still heated adhesive layer facing away from the core layer is a Another insulating layer made of a rigid plastic foam is pressed on and glued in place will. With this procedure you can find cheap, yet beneficial, high quality Lightweight panels are manufactured as the individual parts as prefabricated products can be processed quickly and easily. The trick, a sletal layer to be used with adhesive and protective application on both sides, for a short time and with a simple heater can be activated, simplifies the manufacture of the Lightweight panels in principle. Nevertheless, the lietal layer does not form a cold bridge to the top of the lightweight board, as it is shielded by a further insulating layer which is also firmly attached to the Lightweight board adheres. The hard foam layer is preferred here in a layer thickness of 1 cm unwound from a roll, so that a continuous Creating these panels on great lengths is possible.

The insulating layer of such a lightweight panel can then This can be increased considerably if another layer of wood wool cement is placed on top of the insulating layer is applied. The binding agent used to fix the wood wool can be used is used at the same time for the adhesion of this layer to the insulating layer will.

Of course, it is also possible that the insulating layer that is connected to the top-side adhesive layer of the metal layer, as a carrier layer for a layer of wood wool cement and as a prefabricated composite panel the heated adhesive layer is rolled up and / or pressed on. Such composite panels are commercially available and can be obtained inside in all common formats, making them costly and time-consuming cutting or fitting work of these composite panels in Omission come.

According to another important idea of the invention, it is suitable the aforementioned method for the production of spatial components, in particular of Roller shutter boxes, to the effect that on at least one inside of the pressed wood wool cement existing roller shutter box blank one on both sides with a metal layer coated with a thermally active adhesive is applied and heated, that then the metal layer in the still heated state on the inner wall pressed on and is glued, and that on the facing away from the inner wall, heated adhesive layer an insulating layer made of rigid plastic foam is applied and this under the action of pressure is glued to the netallschiciit. A roller shutter box manufactured in this way is very dimensionally stable and guarantees a much better insulating effect against Warmth and sound than the conventional ones.

Inshesorldere the inserted film contributes to the insulation and brings despite the narrow overall wall section, a significantly greater sound insulation than that previous larger wall thicknesses made of rigid foam and wood wool cement. DE. production method is very simple and the roller shutter boxes can be manufactured to any length will. The separation of the individual layers from one another is due to the selected ones Materials and the process so tight that even with prolonged use and in exposed beds are not destroyed.

The insulating effect of this layer composite is so high that the Wall thickness @@@@ such a constructed roller shutter box wall can be chosen to be smaller can, than the conventional and that thus the external dimensions are chosen to be narrower as they are particularly desirable for modern buildings.

It is expedient, as is also proposed, that on the insulating layer another layer of wood wool cement is applied. This additional wood wool cement view increases the strength again, at the same time the sensitive insulating layer made of synthetic foam and created a wear layer that also possibly as Carrier layer for a plaster coating or a paint application can serve.

According to the invention, particularly good results have been obtained when the glue applied to the metal layer is made of bitumen or tar, which preferably becomes soft and sticky at approximately 100 to 20 ° C. In this temperature range there is excellent adhesion of both the metal layer to the olive wool cement layer as well as the insulating layer on the metal layer. At the same time there is this Temperature, there is no risk of the wood wool cereal layer being damaged. Rather, the heating effect is achieved at the same time - that from the entire group of residual moisture is expelled.

In order to keep the procedural costs as low as possible, the Invention furthermore that the heated metal layer on the injected wood wool cement and the insulating layer is fixed on the detail layer by rolling it up, respectively will. A light building panel produced in this way then has a much better one Insulating effect than the well-known lightweight panels and also has a much lighter weight if a pressed core layer of wood wool cement is provided, on which a metal layer is glued on at least one side and that another insulating layer made of rigid plastic foam, which is on the metal layer is glued on, is provided and over which an additional insulating layer is made Wood wool cement is applied firmly.

De lightweight panels produced in this way also for hanging from false ceilings or as facade panels use, the top of which is optically favorable Must give an impression, it is further suggested that on the top layer a layer of exposed plaster or exposed concrete is applied from wood wool cement, or that even on at least one side of the lightweight board the uppermost wooden wool cement lichic} lt or the exposed plaster or exposed concrete layer with wallpaper or something similar interior architectural protective covering is provided.

A roller shutter box produced according to the inventive c experience produces a much better insulating effect with a lower weight and smaller ones Dimensions, if it, as is also proposed according to the invention, at least on one side of a wall a metal foil with adhesive on both sides glued on, on which hiri an insulating layer against the inside of the roller shutter box is set from a plastic rigid foam.

In practice, the best insulating effects and that lowest weight of such roller shutter boxes result when the metal layer consists of a foil of a light metal, preferably Alumirilum, the one double-sided application of bitumen or tar, and when the insulating layer is off a rigid polystyrene or polyurethane foam.

These materials not only have a known good insulating effect and are light in weight, but they are also available in commercial formats, thicknesses and density available.

The method according to the invention, as well as the products produced therefrom are explained below with reference to the drawing.

1, 2, 3 show the process sequence when producing a Lightweight construction panel, Fig. 4 shows a partial section through such a lightweight construction panel and Fig. 5 is a perspective view of a portion of a roller shutter box, the is produced by the method according to the invention.

At the beginning of the process for the production of a lightweight construction panel loosely layered Uolzwollematerial 1 with a suitable binder, preferably soaked in a liquid cement 4 and compressed between pressing members 2 and 3 so far, that a known core layer 10 (Fig. 2) is formed. As in Fig. 1 is indicated, can schom when pressing the wood wool 1 with the cement 4 in the Pressing device already has a metal layer 5 with adhesive application 6 on both sides which are then inserted at the bottom and / or at the top of the core layer 10 adheres when the intermediate product is removed from the mold.

The adhesive here is in particular a heat-active adhesive, for example Bitumen or tar, which is not yet activated during the pressing process, is expedient The Pietall layers 5 adhere to the intermediate product produced in this way temporarily only due to the solidified cement on the core layer 10 As in FIG. 2 indicates, the core layer 10 with the two-sided metal layers 5 and the Adhesive layers 6 removed from the pressing device and with suitable holding devices 7 fixed salary. Heating devices 8 are then used to act on the two upper sides brought to a temperature of 100 to 120 ° C, which as indicated at 9, the Kloberschichten 6 Activate.

The adhesive layers 6 facing the core layer join then lezementmaterial with the Holzwol, in connection with this, as indicated in FIG is, on the Iicch heated outer adhesive layer 6 composite panel n 4 1, 12, consisting from a layer 11 of a rigid plastic foam and one applied to it Cover layer 12, for example again dus wood cement, laid on and with the help be rolled up by Walacrl or Rollers 1 @ in the direction of arrows 14 @. At the next Cooling the v @@ bundle sicfi the adhesive layers with their surroundings and thus create a firmly connected lightweight panel consisting of several layers. The Fortigprodmkt is shown in Fig. 4 and consists of a core layer 10, the metal layers 5 bonded to it on both sides as well as the external ones Isolierschichtert according to the cover layers 12. As indicated by 15 dashed lines can, on the outside of such a lightweight board, a further decorative layer or a fine or rough plaster layer can be applied so that the finished lightweight panel without a further MachbehlndlllnJ z.rs. for suspending false ceilings or as Outer facade panels can of course be used Lightweight panels for a variety of purposes, which are not to be discussed in detail here, be used.

In Fig. 5 it is indicated how the method for production described above a roller shutter box 20 can be used. The left half represents 20a the roller shutter box is an intermediate stage in the manufacture of the roller shutter box, while the right half 20b illustrates the finished shutter box. One of those As a rule, however, the roller shutter box is only insulating on one inner side coated as described below.

The shutter box 20 has a U-shaped cross section with a flat transverse part 21, from which two approximately vertical cheeks 22 extend downwards extend. It consists e.g. of pressed wood wool cement and can be used as a prefabricated Be formed component. On the inside of his cheeks 22 is without further Pretreatment a metal layer 23, preferably in the form of an aluminum foil with a double-sided bitumen or tar application 24 inserted :. Because is going to the inside des Rolldenkstns introduced a heating element 25, which the bitumen layers 24 on heated a temperature range between 100 and 120 ° C, so that these become liquid. Then the heating element 25 is removed and an insulating layer 26 made of a rigid plastic foam, preferably made of polystyrene or polyurethane on the still liquid, sticky bitumen layer placed and with the help of a no longer shown1 role of a pressing member pressed on.

When the bitumen layer hardens, an intimate connection is created between the cheek 22, the aluminum foil 23 and the insulating layer 26. On the The inner side of the insulating layer 26 can subsequently be provided with a further covering layer be applied, so that the sensitive and unsightly top of the plastic foam board is covered. This subsequent coating 27 can either already from be provided in advance on the insulating layer 26, for example in the one for this a prefabricated composite panel is used, but this can also be retrofitted Layer 27 can be painted on or sprayed on.

The insulating effect of the produced according to the method described above Roller shutter box is much larger than previously known roller shutter boxes could be achieved. Therefore, the final cheek thickness can be made smaller than has been the norm up to now. In the drawings are the thicknesses of each related to each other Layers for the sake of clarity exaggerated.

In reality it is the end product, i.e. both the lightweight panel as well as the roller shutter box cheek made according to the process thinner than this was the case with the acquaintances.

L e r s e i t e

Claims (11)

P a t e n t a n s p r ü c h e 1. Process for the production of lightweight construction panels a core layer made of wood wool cement and at least one outer insulating layer, d cl d u r c I g e k e n ri z e i c h n e t, there at least on one side of the Core layer (10) during or after its compression molding, at least one on both sides with one x Heat-sensitive adhesive coated metal layer (5) is applied that the adhesive activated by noise and the layer under the action of pressure with the core layer (10) is glued, and that aufh the still heated, facing away from the core layer (10) Adhesive layer (6) a further insulating layer (11) made of a rigid plastic foam is pressed on and glued. 2. The method according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that on the insulating layer (11) another layer of wood wool cement (1, 1) is applied. 3. The method of claim 1, d a d u r chh g e -k e n n z e i c h n e t that the insulating layer (1-1) as a carrier layer for a layer of wood wool cement (1, 4) is used and as a prefabricated composite panel on the heated adhesive layer (6) is rolled up or pressed on. 4. Use of the method according to claims 1 to 3, in particular for the production of spatial components, namely roller shutter boxes with U-shaped Cross-section, d u r c h e k e n n -z e i c h n e t that on at least one inside of the roller shutter box blank consisting of pressed wood wool cement one on both sides With a heat-active adhesive coated metal layer (23) placed and heated is that then the metal layer (23) in the still heated state to the inner wall is pressed and glued, and that on the opposite of the Irillenwand, heated Adhesive layer an insulating layer (26) made of rigid plastic foam is applied and this is adhered to the metal layer (23) under the action of pressure. 5. The method according to claim 4, d a d u r c h g e k e n n z e i c h n e t that a layer of wood wool cement is applied to the insulating layer (26) will. 6. The method according to any one of claims 1 to 5, d a d u r c h g e k It is noted that the adhesive consists of bitumen or tar (24) and preferably until approximately 100 to 120 0C is heated. 7. The method according to any one of claims 1 to 6, d a d u r c h g e k It is noted that the heated metal layer (23) on the pressed wood wool cement and the insulating layer (26) is fixed on the metal layer (23) by rolling it up, respectively will. 8. With the method according to claims 1 to 3 manufactured Lightweight construction panel, not shown with a pressed core layer (10) made of wood wool cement, on at least one side of which a metal layer (5) is glued on, and a further insulating layer (11) made of rigid plastic foam, which is glued to the metal layer (5), and over which an additional layer made of wood wool cement (12) is firmly adhered. 9. Roller shutter box according to the method according to one of the claims 4 to 7 is made, d a -d a d u r c h g e k e n n n z e i c h n e t that at least on one side of the cheek (22) made of wood wool cement, one on both sides with an adhesive (24) equipped metal foil (23) is glued onto the against the inside of the roller shutter box an insulating layer (26) made of rigid plastic foam is glued in place. 10. Roller shutter box according to claim 9, d a d u r c h g e k e n n z e-i c h n e t that the metal layer consists of a foil of a light metal, preferably There is aluminum, which carries a double-sided application of bitumen or tar. 11. Roller shutter box according to one of claims 9 and 10, d a d u r c it is noted that the insulating layer (26) is made of a polystyrene or rigid polyurethane foam.