DE202009003774U1 - An element - Google Patents

Abstract

Shuttering element comprising a layered structure (12) comprising two plates (14; 16) and a honeycomb structure (18) disposed between said plates (14; 16), wherein walls (26) forming said honeycomb structure (18) are transverse to said Plates (14; 16) run.

Description

The The invention relates to a formwork element with a layer structure. A layer structure is understood to mean an element which has multiple layers.

There are shuttering elements known, for example DE 38 15 870 C1 in which a steel mesh mat is covered by a foil. When the film is a stable shrink film, for example made of polyethylene, with which the latticework of Baustahlmatte is shrunk, so that the grid openings are each closed by two layers of film and thus receives a flat, concrete impermeable formwork element.

task The invention is a novel, lightweight formwork element to accomplish.

These Object is achieved by a formwork element of the type mentioned above, in which the layer structure two plates and a honeycomb structure arranged between these plates having walls, which form the honeycomb structure, run across the plates. Under a honeycomb becomes a Understood element having a plurality of honeycombs. Preferably the walls of the honeycomb structure are glued to the plates.

By the stabilizing interaction of the honeycomb structure and the plates can make one using suitable, thinner, lighter materials high stability of the formwork element at the same time low weight can be achieved. It also comes through materials for the plates and the honeycomb structure, the so far not be used for lost formwork could. In particular, low density materials, like paper or cardboard. When the inventive Shuttering element for lost formwork, for example Foundation formwork is used, it may be advantageous if the material of the formwork element after moisture absorption gradually rots.

advantageous Refinements and developments of the invention will become apparent the dependent claims.

Preferably The said walls are made of paper or cardboard.

Preferably the said walls are formed by strips which each together with adjacent strips a plurality of honeycombs limit. For example, the strips run kinked or bent, about zigzag or wavy. you are preferably glued together.

Preferably The plates each have at least one layer with several Laying on, of which at least one layer wavy runs. Preferably, the layers of paper or cardboard. By a wave-shaped position results in less Material density high stability.

Preferably the plates each have at least two such layers, their undulating layers in different directions are wavy. In particular, for example, the wave of a wave-shaped Location of a layer transverse to the shaft of a wavy Location of another, in particular adjacent layer run. In In a preferred embodiment, the plates each have three such layers, each with a wave-shaped Location.

The Plates can also be constructed differently, and the features of the plates described can only one the two plates are present.

Preferably the layer structure is covered by a foil. Thereby the layer structure is protected against wetting.

In In one embodiment, the film is perforated. By the Extent of perforation can increase the rate of water absorption material of plates from the released at hardening of concrete Moisture can be controlled specifically.

In an embodiment is on at least one side of the Layer structure arranged an insulating layer. When the inventive Shuttering element for lost formwork, such as foundation formwork is used, so can be with the help of the insulating layer in a simple way a thermal and / or acoustic insulation to reach. The insulating layer can be made of conventional insulating materials consist, for example, foam polystyrene, rock wool or the like and may, for example, by one or more insulating panels be formed.

If the insulation layer is inside the film and thus protected against external moisture is, are also other insulating materials into consideration, in particular open or closed cell materials or fiber materials low density, which has a particularly low thermal conductivity to have. For example, the insulating layer of foamed Plastic material.

If the film is a shrink film, the insulating layer can be fixed by the shrink film in the desired position on the layer structure who so that the formwork element and the formwork formed therefrom can be produced in a particularly simple manner.

Preferably is the honeycomb structure through at least one cavity for receiving interrupted by a peg.

in the The following are exemplary embodiments with reference to the drawing explained in more detail.

It demonstrate:

1 a vertical section through an upright standing, inventive formwork element;

2 a view accordingly 1 a modified embodiment of the formwork element;

3 a horizontal section through the formwork element after 2 ;

4 a section along the level IV-IV 2 ; and

5 a configuration of the formwork element according to the invention with an insulation board.

In 1 is a plate-shaped formwork element with a layer structure 12 shown, and in the 2 to 4 a similar plate-shaped shuttering element is shown, in which the layer structure 12 additionally with a shrink film 13 is wrapped. Moreover, the formwork elements of the 1 and 2 constructed identically and will therefore be described together below. With the exception of the foil 13 corresponds to the in the 3 and 4 structure shown also after the formwork element 1 ,

The layer structure 12 consists of two plates 14 . 16 and one between these plates 14 . 16 arranged honeycomb structure 18 , The plates 14 and 16 each consist of a three-layer cardboard, each of the three layers a wave position 20 respectively. 22 contains. The shaft of the shaft position runs 22 a middle layer transverse to the shaft of the wave layers 20 the outer layers. The wave situations 20 . 22 each run between smooth layers 24 ,

walls 26 the honeycomb structure 18 are formed by strips of paper, which, as in 4 can be seen, wavy or kinked run and each together with adjacent strips to limit the honeycomb of the honeycomb structure. The edges of the walls 26 are with the respective adjacent plates 14 . 16 bonded.

In 3 is an example of a cavity 28 shown the honeycomb structure 18 interrupts and extends in a vertical direction through the formwork element to receive a peg for fixing the formwork element. Such cavities 28 are formed, for example, at regular intervals in the formwork element.

The foil 13 can be perforated so that the moisture released during setting of the concrete through the perforated film 13 can penetrate and from the plates 14 respectively. 16 and the honeycomb structure 18 can be included. For example, the film 13 to be pierced at various points on the inside of the formwork element.

5 shows a configuration in addition to one side of the formwork element, for. B. between the plate 14 and the foil 13 , an insulating layer in the form of an insulating board 30 is provided. In this case, the film is preferably not perforated.

The insulation board 30 may have any desired thickness for the purpose of thermal insulation, for example between 30 and 120 mm, and it may be made of any insulating material, for example foam polystyrene, rock wool and the like. Instead of a rigid insulation board, a flexible insulating layer of rock wool or other suitable material can be used. Likewise, the insulating layer can also be formed from a loose bed of granules or the like, through the shrink film 13 is kept in shape.

The insulating layer may also have moisture-retaining properties, or it may be provided in addition to the thermal barrier coating, a moisture-absorbing layer. In this case, the film can 13 be perforated again.

On the slide 13 can also be dispensed with, and the insulating layer, for example, with the plate 14 be glued.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3815870 C1 [0002]

Claims (10)

Shuttering element with a layer structure ( 12 ), which two plates ( 14 ; 16 ) and one between these plates ( 14 ; 16 ) arranged honeycomb structure ( 18 ), where walls ( 26 ), which the honeycomb structure ( 18 ), transversely to the plates ( 14 ; 16 ). Shuttering element according to claim 1, wherein the layer structure ( 12 ) of a film ( 13 ) is wrapped. Shuttering element according to claim 2, wherein the foil ( 13 ) is perforated. Shuttering element according to one of the preceding claims, wherein said walls ( 26 ) consist of paper or cardboard. Shuttering element according to one of the preceding claims, wherein said walls ( 26 ) are formed by strips each defining a plurality of honeycombs together with adjacent strips. Shuttering element according to one of the preceding claims, wherein the plates ( 14 ; 16 ) at least one layer with several layers ( 20 ; 22 ; 24 ), of which at least one layer ( 20 ; 22 ) Wavy. Shuttering element according to claim 6, wherein the layers ( 20 ; 22 ; 24 ) consist of paper or cardboard. Shuttering element according to claim 6 or 7, wherein the plates ( 14 ; 16 ) each have at least two such layers whose wave-shaped layers ( 20 ; 22 ) are corrugated in different directions. Shuttering element according to one of the preceding claims, wherein on at least one side of the layer structure ( 12 ) an insulating layer ( 30 ) is arranged. Shuttering element according to one of the preceding claims, wherein the honeycomb structure ( 18 ) by at least one cavity ( 28 ) is interrupted to receive a peg.