EP2479359B1 - Sound insulation element and method for producing same - Google Patents

Description

The invention relates to a soundproofing element, a method for manufacturing a building with this soundproofing element, and a method for manufacturing this soundproofing element.

When producing prefabricated buildings, in particular residential houses, wooden beam ceiling constructions or stacked boards ceiling constructions are often used. These ceiling constructions have the disadvantage that they are sensitive to sound insulation. In particular, the steps of a person moving on the ceiling structure can be heard in the rooms below. This is an impairment of the quality of living.

From the document WO 98/19024 A1 a thermal insulation element is known which comprises loose bulk material.

document DE 17 47 939 U discloses a sound-absorbing element which consists of two or more solid bodies which are elastically connected to one another to form a cavity, the cavity being filled with a sound-absorbing substance or heavy material.

It is the object of the invention to provide a soundproofing element and a method for manufacturing a soundproofing element, in which good impact soundproofing is achieved in a simple manner.

This object is achieved by a soundproofing element with the features of claim 1 and by a method with the features of the independent method claim. Advantageous further developments of the invention are given in the dependent claims. According to the invention, the soundproofing element comprises a base element which comprises a receiving area for receiving bulk material and an opening for filling the bulk material into this receiving area. This receiving area is at least partially filled with the bulk material. The opening is closed by a closure element.

By using a bulk material, particularly good footfall sound insulation is achieved, since such a bulk material has significantly less sound conduction than solid bodies. By filling the bulk material into a basic element, the soundproofing element can easily be prefabricated at the factory, so that it only has to be transported to the place where the prefabricated building is to be built and in a simple manner on a load-bearing substructure Ceiling must be applied. This simplifies the assembly and reduces the effort. The closure of the opening via the closure element has the effect that the bulk material cannot be lost during transport, so that the soundproofing element can be transported and handled without any problems. Closing the opening is understood to mean that the opening is closed in such a way that the bulk material does not fall out of the receiving area, or that the bulk material can indeed escape from the receiving area itself, but is still held within the soundproofing element.

The closure element comprises in particular a film which closes the opening. The film is in particular completely wrapped around the base element and welded so that even fine-grained bulk material cannot escape from the receiving area or, if it does escape from the receiving area, through the welded film enclosed area is held. In an alternative embodiment of the invention, the film can also be glued. Furthermore, as an alternative, a bag-shaped, prefabricated film having an opening can be used, the opening of which is slipped over the base element. The opening is then welded or glued.

The base element has, for example, a base element and four side walls connected to the base element, the base element and the side walls delimiting the receiving area in which the bulk material is received. The base element and the side walls are in particular formed in one piece, so that particularly simple manufacture is achieved. The opening is formed by the side opposite the base element, so that the bulk material can be easily fed through this large opening and evenly distributed in the receiving area. In this way, even footfall sound insulation is achieved.

In particular, the base element has at least one elevation, by means of which the receiving area is divided into at least two chambers. In a particularly preferred embodiment, several elevations are provided so that more than two chambers are also formed. The chambers are each at least partially, preferably completely, filled with the bulk material. In addition, further elevations can also be provided in the base element, which are less high than the side walls, so that they do not result in a division into several chambers, but merely provide a stiffening of the base element.

The floor element is made of plastic, cardboard and / or paper, so that it is lightweight and easy to handle. As an alternative to a film, the closure element can also be formed by a cardboard cover or plastic cover, which is folded shut after the receiving area has been filled with the bulk material, so that the opening is closed by this cover.

The bulk material is produced by shredding wood-cement panels, preferably the remains of wood-cement panels used in other prefabricated components, so that the bulk material is obtained by recycling leftovers and the soundproofing element can be produced in an environmentally friendly and inexpensive manner. Furthermore, the bulk material can also comprise sand, expanded concrete, wood chips enclosed by cement and / or gravel.

The soundproofing element has a length between 0.4 m and 0.8 m, a width between 0.3 m and 0.5 m and / or a height between 0.01 m and 0.1 m Way to be handled manually, so that laying on the construction site can be done without any problems. Furthermore, this dimension ensures that, when the receiving area is completely filled with bulk material, the soundproofing element has a weight of only a few kilograms, in particular six to seven kilograms, so that one or even two soundproofing elements can be carried in a simple manner.

Another aspect of the invention relates to a method for manufacturing a soundproofing element in which a bulk material is filled through an opening in a receiving area of a base element and in which, after the receiving area has been at least partially filled, this opening is closed with the aid of a closure element. In particular, a film is used as the closure element, which is wrapped or slipped around the base element so that it completely closes the opening. The film is then preferably welded and / or glued so that bulk material is prevented from falling out. Alternatively, a bag made of a film can also be used, which is slipped over the base element. The opening of the bag is then welded and / or glued.

Another aspect of the invention relates to a method for producing a prefabricated building in which a supporting substructure of a ceiling of the building is erected and in which at least one soundproofing element of the type described above is placed on the supporting substructure. The substructure includes in particular reinforced concrete slabs, ribbed steel ceilings, wooden beam ceiling structures and / or stacked boards ceiling structures. By placing the soundproofing element, an easy-to-install impact soundproofing insulation of the building is achieved.

A screed, a further floor slab and / or a floor covering, for example carpeting, tiles, parquet and / or laminate, can be laid on the soundproofing element.

Further features and advantages emerge from the following description, which explains the invention in more detail in connection with the accompanying figures on the basis of exemplary embodiments.

Figur 1

eine schematische perspektivische Darstellung eines Grundkörpers eines Schallschutzelementes;

Figur 2

eine Schnittdarstellung eines Schallschutzelementes gemäß einer ersten Ausführungsform der Erfindung;

Figur 3

eine Schnittdarstellung eines Schallschutzelementes gemäß einer zweiten Ausführungsform der Erfindung,

Figur 4

eine schematische Darstellung eines Gebäudes, und

Figur 5

eine schematische Schnittdarstellung eines Ausschnitts einer Decke des Gebäude nach Figur 4.

Show it:

Figure 1

a schematic perspective illustration of a base body of a soundproofing element;

Figure 2

a sectional view of a soundproofing element according to a first embodiment of the invention;

Figure 3

a sectional view of a soundproofing element according to a second embodiment of the invention,

Figure 4

a schematic representation of a building, and

Figure 5

a schematic sectional view of a section of a ceiling of the building according to Figure 4 .

In Figure 1 is a schematic, perspective illustration of a base element 12 of a soundproofing element 10 according to a first embodiment of the invention. In Figure 2 is a sectional view of the soundproofing element 10 according to FIG Figure 1 shown.

The base element 12 comprises a base element 14 and four side walls 16, 18, 20, 22 each arranged perpendicular to the base element 14. In an alternative embodiment, the side walls 16, 18, 20, 22 can also be at an angle between 70 ° and 120 ° to the Floor element 14 can be arranged.

The bottom element 14 and the side walls 16, 18, 20, 22 are in particular formed in one piece, so that the bottom element 14 is very strong. A receiving area 24 is delimited by the bottom element 14 and the side walls 16, 18, 20. During the production of the soundproofing element 10, a bulk material 28 is filled into the receiving area 24 through the opening 26, which is formed by the open side of the base element 12 opposite the bottom elements 14.

Shredded, cement-bonded chipboard is used as the bulk material 28, so that the bulk material 28 comprises cement-bound wood chips. For this purpose, remnants of cement-bonded chipboard, which were created during the manufacture of other components of a building, for example to be constructed using prefabricated construction, are processed further, so that the otherwise useless waste is recycled. Furthermore, such a bulk material 28 has good soundproofing insulation, since this bulk material 28 conducts sound only poorly, so that the desired insulating effect is achieved. The bulk material 28 consisting of wood chips and cement is also referred to as crispan. In addition, the bulk material 28 can also comprise sand, expanded concrete and / or gravel, for example.

After the bulk material 28 has been filled in the receiving area 24, the base element 12 is wrapped with a film 30 and the edges of the film 30 are welded to one another, so that the base body 12 and the bulk material 28 are completely enclosed by the film 30 and the bulk material 28 cannot be lost. Alternatively, a bag-shaped film 30 can also be slipped over the base element 12.

The soundproofing element 10 can thus be transported in a simple manner without having to pay attention to the alignment of the soundproofing element 10. The soundproofing element 10 is preferably prefabricated at the factory so that it can be laid quickly and easily together with other prefabricated components at the location where the building is to be erected. This means that no bulk material has to be laboriously handled on the construction site.

The film 30 is made in particular from polyethylene (PE), so that it is inexpensive to procure and yet has a high level of strength, as a result of which the film 30 is prevented from tearing.

In an alternative embodiment, the film 30 can also only be stretched over the opening 26 and fastened to the side walls 16 to 22. Thus, although the opening 26 is closed by the film 30, so that the bulk material 28 is prevented from falling out of the receiving area 24, the entire base element 12 is not spanned by the film 30. The lower material requirement for film 30 saves costs.

Furthermore, a cover can alternatively also be used to close the opening 26. This cover is connected to one of the side walls 16, 18, 20, 22, for example via a film hinge, and can be folded over after the receiving area 24 has been filled with the bulk material 28 and attached to at least one of the other side walls, preferably to all of the other side walls.

The base element (12) is made of cardboard or a plastic, so that the base element 12 has a high level of stability with low weight. A cover used to close the opening 26 is also preferably made of cardboard or plastic in this case.

In Figure 3 a sectional view of a soundproofing element 100 according to a second embodiment is shown. The receiving area 24 of this soundproofing element 100 has several chambers 102, 104, 106, into each of which the bulk material 28 is filled. For this purpose, the base element 14 has two elevations 108, 110 which are approximately the same height h as the side walls 16, 18, 20, 22. Alternatively, more or less than two elevations 108, 110 can also be provided. In a particularly preferred embodiment, two elevations 108, 110, which run approximately parallel to the side walls 18, 20, and two elevations, which run approximately parallel to the side walls 16, 22, are provided. Thus nine chambers 102, 104, 106 are formed, into each of which bulk material 28 is filled.

In addition, the base element 14 has further elevations, one of which is designated by the reference number 112 by way of example. These elevations 112, like the subdivision into several chambers 102, 104, 106, serve to stiffen the soundproofing element 100.

In the second embodiment, too, the base element 12 is wrapped in a film 30 so that the bulk material 28 can be lost when Transport and / or the laying of the soundproofing element 100 is avoided.

The soundproofing element 100 has a height designated by h and a width designated by b. In addition, the soundproofing element 100 has an in Figure 3 unmarked length directed into or out of the plane of the paper. In particular, the length has a value between 0.4 m and 0.8 m, the width b a value between 0.3 m and 0.5 m and the height h a value between 0.01 m and 0.1 m the soundproofing element 100 is easy to handle. When the receiving area 24 of the soundproofing element 100, i.e. all of the chambers 102, 104, 106, is completely filled with a bulk material made of cement and wood chips, the soundproofing element 100 weighs approximately six to seven kilograms, so that at least two such soundproofing elements 100 have can easily be carried manually.

In Figure 4 a schematic representation of a prefabricated building 200 is shown. The building has three ceilings 202, 204, 206, with in Figure 5 a section of a sectional view of the ceiling 202 is shown. The other two ceilings 204, 206 are constructed accordingly, so that the following statements apply analogously.

The ceiling 202 comprises a load-bearing substructure 208, by means of which the loads acting on the ceiling 202 are essentially supported. The substructure 208 can, for example, be designed as a wooden beam construction or a stack of boards construction. Furthermore, the substructure 208 can comprise reinforced concrete slabs and / or steel ribbed ceiling elements. A plurality of soundproofing elements 210, 212 are placed on the upper side of the substructure 208, with FIG Figure 5 only the detail of two of these soundproofing elements 210, 212 is shown. Impact sound insulation is thus achieved by means of the sound insulation elements 210, 212.

A screed can be applied to the soundproofing element 210, 212 and a floor covering, such as for example parquet, laminate, tiles and / or carpeting, can be applied to this. Alternatively, at least one floor slab, which replaces the screed, can also be applied to the soundproofing elements 210, 212. The floor covering is then applied to this floor slab.

List of reference symbols

10, 100, 210, 212

Soundproofing element

12th

Basic element

14th

Floor element

16, 18, 20, 22

Side wall

24

Recording area

26th

opening

28

Bulk material

30th

foil

102, 104, 106

chamber

108, 110, 112

Elevation

200

building

202, 204, 206

ceiling

208

Substructure

Claims (10)

1. A sound insulation element (10, 100, 210, 212),
   with a base element (12) comprising a holding area (24) for holding bulk material (28) and an opening (26) for filling the bulk material (28) into the holding area (24),
   wherein the holding area (24) is at least partially filled with the bulk material (28),
   wherein the opening (26) is closed by means of a closing element (30), and
   wherein the base element (12) is made of plastic material, cardboard and/or paper,
   characterized in that the bulk material (28) comprises shred wood-cement panels for impact sound insulation, and
   that the sound insulation element (10, 100, 210, 212) has a length between 0.4 m and 0.8 m, a width (b) between 0.3 m and 0.5 m and/or a height (h) between 0.01 m and 0.1 m.
2. The sound insulation element (10, 100, 210, 212) according to claim 1, characterized in that the closing element (30) comprises a foil that closes the opening (26).
3. The sound insulation element (10, 100, 210, 212) according to claim 2, characterized in that the base element (12) is completely surrounded by the foil (30).
4. The sound insulation element (10, 100, 210, 212) according to one of the preceding claims, characterized in that the base element (12) comprises a bottom element (14) and four sidewalls (16 to 22) connected to the bottom element (14), and that the holding area (24) is formed by the bottom element (14) and the sidewalls (16 to 22).
5. The sound insulation element (10, 100, 210, 212) according to claim 4, characterized in that the bottom element (14) presents at least one projection (108, 110, 112), preferably several projections (108, 110, 112).
6. The sound insulation element (10, 100, 210, 212) according to claim 5, characterized in that the projection (108, 110) divides the holding area (24) into at least two chambers (102, 104, 106).
7. A method for producing a sound insulation element (10, 100, 210, 212),
   in which a bulk material (28) comprising cement-bound wood shavings is filled through an opening (26) into a holding area (24) of a base element (12) made of plastic material, cardboard and/or paper, and
   in which, after at least partially filling the holding area (24) with the bulk material (28), the opening (26) is closed with the aid of a closing element (30),
   characterized in that the bulk material (28) comprises shred wood-cement panels for impact sound insulation, and
   that the sound insulation element (10, 100, 210, 212) has a length between 0.4 m and 0.8 m, a width (b) between 0.3 m and 0.5 m and/or a height (h) between 0.01 m and 0.1 m.
8. The method according to claim 7, characterized in that as a closing element (30) a foil is used, and that the foil is wound around and/or put over the base element (12) such that it closes the opening (26).
9. The method according to claim 8, characterized in that the foil is sealed, preferably in an airtight manner.
10. A method for making a building (200) using a prefabricated construction,
    wherein a supporting substructure (208) of a floor (102 to 206) of the building (200) is built, and
    wherein at least one sound insulation element (10, 100, 210, 212) according to one of the claims 1 to 6 is placed on the supporting substructure (208).

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