EP2072701A2 - Insulation element - Google Patents

Abstract

The element has a vacuum-tight film envelope (10), in which an insulating material (16) e.g. mineral wool, is vacuumizable under volume reduction. The film envelope is degradable at a place for ventilating the insulating element for degrading increase in volume of the insulating element. The film envelope is formed of two welded films, and is made of plastic. The film is provided with a heat insulating coating. The insulating element comprises a lug-shaped extension for gripping the insulating element. An independent claim is also included for a method for forming an insulating device.

Description

BACKGROUND OF THE INVENTION 1. Field of the invention

The present invention relates to an insulating element, a method for its production and a method for forming an insulating device with such an insulating element.

2. Technical background

Mineral wool is a particularly effective, non-combustible insulating material, which is versatile in use and is used in particular in residential and commercial construction for thermal insulation purposes. The mineral wool is usually available on the construction site as a roll or mat product, which must be cut on site. It is known that the very fine fibers of the mineral wool lead to itch in contact with the skin and the dusts of the mineral wool may be harmful to health (possibly even carcinogenic). For health and occupational safety reasons, people working with mineral wool must therefore be equipped with suitable protective clothing (gloves, respiratory protection, etc.).

From the DE 10 2005 045 726 A1 For example, a vacuum insulation body is known, which consists of a vacuum-tight film bag, in which a powdery or granular insulating material is filled, which is compressed for compression, before the film bag is evacuated and sealed. By evacuating the thermal conductivity of the powdered insulating material can be significantly reduced while increasing the durability of the insulating material.

The EP 1 762 662 A2 also discloses a vacuum insulation panel with special density rock wool filled in a vacuum envelope as a heat insulating filling with low thermal conductivity. The WO 92/04301 A1 describes a similar vacuum insulation panel with a special density mineral fiber board enclosed by a gas tight envelope.

SUMMARY OF THE INVENTION

The invention has for its object to provide an insulating element with good thermal insulation properties, which allows a simple and healthy handling at the same time.

According to a first aspect of the invention this object is achieved by an insulating element with the features of claim 1. Advantageous embodiments and further developments of the invention are the subject of the dependent claims 2 to 6.

The insulating element according to the invention comprises a volume reduction under vacuumable insulating material and a vacuum-tight film wrapping in which the insulating material is vacuum-received and at least one point for venting the Dämmelements and thus causing an increase in volume of the insulating material is destructible on.

The insulating material is vacuum-tightly received in a film wrapping. Therefore, the persons working with the insulating element come into contact neither with the insulating material itself nor with its dusts and the like. The insulating element can thus be processed without special protective measures.

In addition, the insulating material in the film wrapping vacuum-absorbed added, the vacuumization has also led to a reduction in volume of the insulating material. This has the consequence that the entire insulating element is reduced in volume and therefore requires less space during storage and transport, which in turn causes a reduction in storage and transport costs.

Due to the film wrapping, the insulating material is also protected against environmental influences such as moisture in particular. This means that the insulating material can always be installed in a dry state. If necessary, the film wrapping can additionally improve the thermal insulation properties of the insulating element.

Since the insulating material is vacuum-absorbed in the film wrapping, the volume-reduced insulating element can be easily positioned at a desired location, without being inconveniently stuffed into intermediate spaces, for example. After positioning the Dämmelements the insulation element can be ventilated by destroying the film wrapping at least one point again, so that the insulation material significantly increases its volume and fills a larger space.

In a preferred embodiment of the invention, the insulating material contains mineral wool, i. Glass wool or rock wool.

In one embodiment of the invention, the film wrapping is formed from at least two mutually vacuum-tight welded films. Alternatively, the film wrapping may also be formed in the manner of a film bag.

The film wrapping is preferably made of plastic, for example of polyamide, polyethylene or a polyamide / polyethylene composite, or of a composite system such as polyethylene terephthalate / aluminum / polyethylene or polyamide / ethylene vinyl alcohol / polyethylene.

In a further embodiment of the invention, the film wrapping is additionally provided with a heat-insulating or heat-insulating coating in order to further increase the thermal insulation properties of the entire Dämmelements.

In a preferred embodiment of the invention, the insulating element further comprises at least one tab-shaped extension, which is preferably formed integrally with the film envelope. Through this flap-shaped extension, which can be used as a kind of handle, the handling of the Dämmelements is further simplified.

According to a second aspect of the invention, the above object is achieved by a method for producing a Dämmelements with the features of claim 7. Advantageous embodiments and further developments of the invention are the subject of the dependent claims 8 to 11.

In the method for producing a Dämmelements according to the invention, a vacuumable under volume reduction insulation material is first provided to which then a vacuum-tight Folienumhüllung, which is destructible at least one point for venting the Dämmelements and thus causing an increase in volume of Dämmmaterials attached. Finally, the film wrapping (or more precisely its contents) is vacuumized and sealed vacuum-tight.

With this method, the same advantages are achieved as have been described above in connection with the insulating element according to the invention.

According to a third aspect of the invention, the above-mentioned object is achieved by a method for forming an insulating device having the features of claim 12. Advantageous embodiments and further developments of the invention are the subject matter of the dependent claims 13 to 15.

The method of forming an insulating device includes the steps of disposing an insulating element of the invention described above and ventilating the positioned insulating element and thereby causing an increase in volume of the insulating material of the insulating element.

First, the compact insulation element with the health-friendly packaged insulation material is easily positioned. Subsequently, the thus positioned insulating element is ventilated, so that the volume of the insulating material and thus of the insulating element increases by itself and the insulating element can fill a larger space.

In one embodiment of the invention, the vacuum-tightness of the film envelope of the insulating element is destroyed in at least one place in the venting step. In a preferred embodiment of the invention, for this purpose, the film envelope of the Dämmelements is pierced at least one point.

In a further embodiment of the invention, a further insulating element is positioned before its ventilation so that it is at least partially surrounded by the at least one lobe-shaped extension of the previously positioned and ventilated Dämmelements.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine schematische Seitenansicht eines Dämmelements gemäß einem ersten Ausführungsbeispiel der vorliegenden Erfindung;

Fig. 2

eine schematische Schnittansicht des Dämmelements von Fig. 1 gemäß Linie II-II in Fig. 1;

Fig. 3A und 3B

schematische Schnittansichten zur Veranschaulichung der Anwendung des Dämmelements von Fig. 1 und 2;

Fig. 4

eine schematische Seitenansicht eines Dämmelements gemäß einem zweiten Ausführungsbeispiel der vorliegenden Erfindung;

Fig. 5

eine schematische Schnittansicht des Dämmelements von Fig. 4 gemäß Linie V-V in Fig. 4; und

Fig. 6A bis 6C

schematische Schnittansichten zur Veranschaulichung der Anwendung des Dämmelements von Fig. 4 und 5.

The above and other features and advantages of the invention will become more apparent from the following description of preferred, non-limiting embodiments thereof with reference to the accompanying drawings. Show:

Fig. 1

a schematic side view of a Dämmelements according to a first embodiment of the present invention;

Fig. 2

a schematic sectional view of the Dämmelements of Fig. 1 according to line II-II in Fig. 1 ;

FIGS. 3A and 3B

schematic sectional views to illustrate the application of the Dämmelements of Fig. 1 and 2 ;

Fig. 4

a schematic side view of a Dämmelements according to a second embodiment of the present invention;

Fig. 5

a schematic sectional view of the Dämmelements of Fig. 4 according to line VV in Fig. 4 ; and

FIGS. 6A to 6C

schematic sectional views to illustrate the application of the Dämmelements of 4 and 5 ,

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

Referring to Fig. 1 to 3 Now, first, a first embodiment of the invention will be explained in more detail.

This in Fig. 1 and 2 shown insulating element is essentially constructed of a vacuum-tight film wrapping in the manner of a film bag 10 having on three sides a vacuum-tight sealed seam or weld 12 and on the fourth side an access opening 14 which is also vacuum-sealed / vacuum-sealed. In this film bag 10, an insulating material 16 is inserted, which is vacuum-reduced with volume reduction, ie which significantly reduces its volume during the vacuumization.

The insulating element of the invention can be used in a particularly advantageous manner for mineral wool (i.e., glass wool or rockwool) as insulating material, since mineral wool can conventionally only be processed with various occupational safety measures, as explained above. Of course, however, other insulating materials can be used, the volume of which is significantly reduced in a Vakuumisierungsvorgang. Furthermore, the enclosed in the film wrapping 10 insulating material 16 is protected against environmental influences such as moisture in particular. That It can be ensured that the insulating material 16 is always installed in a dry state and, for example, does not introduce unwanted moisture into a new building via this insulating material.

In addition, the volume of mineral wool reduced by a vacuum in the film bag, for example, by 50% to 80%. The vacuumized packaging of the insulating material also significantly reduces the volume of the entire insulating element. This has significant advantages in storage and transport of the thus constructed insulation elements due to the space savings.

The film envelope 10 of the insulating material 16 can also result in an improved thermal insulation property of the entire Dämmelements. This effect can optionally be further enhanced by a coating, vapor deposition, etc. of the film envelope 10 on its inside or outside with a heat-insulating or heat-insulating material.

In the embodiment of Fig. 1 and 2 For example, the film wrapping 10 is formed in the manner of a film bag with pre-welded sealing seams, welds or the like of vacuum-tight seams 12 and an access opening 14. Alternatively it is also possible to enclose the insulating material 16 with two or more films and to connect them together vacuum-tight along their circumference.

The film envelope 10 of the Dämmelements is made in a preferred embodiment of plastic. Suitable plastic materials are, for example, polyamide (PA), polyethylene (PE), a polyamide / polyethylene composite and the like. Depending on the field of application of the insulating elements and the use of compostable film materials is to be considered. In another preferred embodiment, a composite film is used for the film wrapping. Suitable composite systems are, for example, polyethylene terephthalate (PET) / aluminum / polyethylene (PE) or polyamide (PA) / ethylene vinyl alcohol (EVOH) / polyethylene (PE) and the like.

For example, in one embodiment of the invention, the insulating element has external dimensions of about 50 cm x 175 cm (corresponding to the side view of FIG Fig. 1 ), without the invention being limited to these specific dimensions.

In the construction of an insulating device with the above-described insulating elements such an insulating element is first positioned at a desired location, for example between two wall elements 18, as in Fig. 3A illustrated. The positioning is very simple, since there is no risk of contact with the insulating material or its dusts and the insulating element can be slid easily between the wall elements 18 due to its reduced volume.

After the successful positioning of the Dämmelements the film wrapping, for example, simply pierced with a screwdriver or a similar tool to destroy the vacuum tightness of the film wrapping in at least one place. By the thus formed opening 20 in the film envelope 10, the insulating element is then automatically ventilated and the insulating material 16 again assumes its initial volume, wherein the insulating element snugs closely to the adjacent wall elements 18.

Of course, the destruction of the vacuum tightness of the film wrapping 10 is not limited to the above piercing with a simple tool, although this is a very simple and time-saving option. Alternatively or additionally, it is also possible to provide the film wrapping 10 with a type of predetermined breaking point in order to facilitate piercing or to form it with a special opening mechanism.

Even when the insulating element is opened, there is no danger to the health of persons in the environment, as during the ventilation process an air flow only takes place from outside to inside and thus no dusts from the insulating material can escape. A direct contact with the insulating material 16 is also hardly possible with the only small necessary opening 20.

After venting the insulating element, as in Fig. 3B shown, another insulating element is positioned (in its still vacuumized form) on the ventilated and extensive insulation element and then also ventilated. This process is repeated until the entire insulation device is completed. Of course, the insulating elements of the invention can be placed not only vertically above each other, but also horizontally or diagonally next to each other.

To build a Dämmvorrichtung in the in FIGS. 3A and 3B illustrated way insulating elements can be provided in various basic sizes in principle. Any smaller gaps in the insulation device are then filled, for example, with conventional insulation elements (eg unpacked mineral wool).

With reference to 4 to 6 Now, a second embodiment of an insulating element will be described in detail. The same or similar components are denoted by the same reference numerals as in the first embodiment above, and their detailed description is omitted.

The insulating member of the second embodiment differs from the first embodiment described above in that it has at least one (two in the embodiment of 4 to 6 ) flap-shaped extension 22 has. This flap-shaped extension 22 is preferably formed integrally with the film envelope 10 and also consists of the same material as this.

In one embodiment, first of all, two foils having a dimension of, for example, about 100 cm × 175 cm are laid on each other. Then, in the region of one half, the vacuum-tight sealing seams or welding seams 12 are formed while maintaining the access opening 14, so that a film bag 10 (in the lower region of Fig. 4 ) with integrally formed projections 22 (in the upper part of Fig. 4 ) receives. The part of the foil bag 10 corresponds to the foil bag of Fig. 1 and, analogously to the first exemplary embodiment, it can be filled with the insulating material 16 which can be vacuum-reduced under volume reduction and then be vacuumized and sealed.

Alternatively, two foils each having a dimension of, for example, about 100 cm x 175 cm are placed around the prepared insulating material 16 such that the insulating material 16 is positioned substantially in one half of the foils. Subsequently, the two foils are subjected to an evacuation process around the insulating material 16 and then connected to one another in a vacuum-tight manner in order to form the insulating material 16 which is sealed in a vacuum-tight manner by the foil envelope 10.

While in the present embodiment, the two flap-shaped projections 22 in section according to Fig. 5 are connected substantially centrally with the film wrapping 10, they can optionally also laterally offset or in each case in the edge region with the film envelope 10 are connected. In addition, optionally, only a flap-shaped projection 22 in the center, laterally offset or adjoin the edge of the film wrapping 10.

This insulating material constructed in this way, in addition to those in connection with the first embodiment of Fig. 1 to 3 mentioned advantages the following advantages.

By the flap-shaped projections 22, which can be used as a kind of handle, the handling of the Dämmelements is further simplified.

As in Fig. 6A is shown to build an insulating device with these insulation elements initially an insulating element, for example, between two wall elements 18 is positioned. The flap-shaped projections 22, on which the insulating element has been left in the gap between the two wall elements 18 down, are still after the ventilation and the volume expansion of the insulating material 16 caused thereby still up. Before positioning the next insulating element, these extensions 22 are spread apart (see Fig. 6B ), to then place the next insulating element between the extensions 22, as in Fig. 6C shown.

By the flap-shaped projections 22, each surrounding a part of the next Dämmelements an air bridge between two adjacent insulating elements can be avoided and thus the thermal insulation properties of the insulating device thus formed can be improved.

Claims (15)

Insulating element, with
an insulating material (16) and a vacuum-tight film envelope (10), in which the insulating material (16) is vacuum-deposited,
characterized,
that the insulating material (16) is vacuumisierbar under volume reduction; and
that the foil envelope (10) at least one location for ventilation of the insulating element, thereby causing an increase in volume of the insulating material (16) is destructible. Insulating element according to claim 1,
characterized,
that the insulating material (16) contains mineral wool. Insulating element according to claim 1 or 2,
characterized,
that the foil envelope (10) of at least two to one another in vacuum-tight welded sheets or formed in the manner of a foil bag is. Insulating element according to one of the preceding claims,
characterized,
that the foil envelope (10) is formed of plastic or of a composite system. Insulating element according to one of the preceding claims,
characterized,
that the foil envelope (10) is provided with a heat-insulating or heat-insulating coating. Insulating element according to one of the preceding claims,
characterized,
in that the insulating element furthermore has at least one tab-shaped projection (22) for gripping the insulating element. Method for producing an insulating element, comprising the steps: Providing an under vacuum volume reducible insulating material (16); Applying a vacuum-tight film envelope (10) destructible at at least one location for venting the insulating member and thereby causing an increase in volume of the insulating material to the insulating material (16); and Vacuum-sealing and vacuum-tight sealing of the film wrapping (10). Method according to claim 7,
characterized,
that the foil envelope (10) of at least two foils which are placed around the insulation, or in the manner of a foil bag in which the insulation material (16) is inserted or introduced, is formed. Method according to claim 7 or 8,
characterized,
that the foil envelope (10) is formed of plastic or of a composite system. Method according to one of claims 7 to 9,
characterized,
that the foil envelope (10) is provided with a heat-insulating or heat-insulating coating. Method according to one of claims 7 to 10,
characterized,
in that at least one tab-shaped projection (22) is formed on the insulating element with which the insulating element can be gripped. Method for forming an insulating device, comprising the steps: Arranging a Dämmelements at a predetermined position, wherein the insulating element is designed according to one of claims 1 to 6; and Aerating the Dämmelements and thus causing an increase in volume of the insulating material (16) of the Dämmelements. Method according to claim 12,
characterized,
that in the venting step, the vacuum tightness of the film envelope (10) of the Dämmelements is destroyed at least one place. Method according to claim 13,
characterized,
that the foil envelope (10) of the insulating element at least one location is pierced in the aeration step. Method according to one of claims 12 to 14,
characterized,
that a further insulating element is positioned before its ventilation so that it is at least partially surrounded by the at least one lobe-shaped extension (22) of the previously positioned and vented Dämmelements.

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