Sound dampening element, covering using such a sound dampening element, a net of a housing of such a sound dampening element, a kit-of-parts of a sound dampening element and a method for producing a sound dampening element.

Abstract

The invention relates to a sound dampening element for covering a floor, a wall and / or a ceiling. The invention further relates to a covering of a floor, a wall and / or a ceiling by such a sound dampening element. The invention furthermore relates to a kit-of-parts of such a sound dampening element. The invention further relates to a method for producing such a sound dampening element.

Description

The invention relates to a sound dampening element for covering a floor, a wall and / or a ceiling. The invention further relates to a covering of a floor, a wall and / or a ceiling formed by a plurality of such sound dampening elements. The invention also relates to a net of a foldable housing of such a sound dampening element. The invention furthermore relates to a kit-of-parts of such a sound dampening element. The invention further relates to a method for producing such a sound dampening element. Temporary and / or sustainable buildings are becoming popular as it relatively quickly provides a working and / or living environment in a cost-efficient manner. Such buildings are usually at least partially made from wood, e.g. cross-laminated timber (CLT) and / or Laminated veneer lumber (LVL). It is generally of great importance that buildings, such as residential houses and offices, are at least partially soundproof for creating comfortable working and / or living environment(s). A soundproof working and / or living environment is capable of at least partially blocking or damping external noise from entering and / or leaving the working and / or living environment. It is, however, a challenge to create sustainable and / or temporary buildings with sufficient soundproof properties. Normally, acoustic waves can easily be transferred between different living and / or working environments of such buildings, in particular due to the wooden construction. In addition, sustainable and / or temporary buildings are typically lightweighted. Therefore, a ballast layer for increasing the mass is normally applied to compensate for the lightweight nature of the building. Typically, a strengthening material, such as but not limited to concrete, sand cement and / or anhydrite is applied to overcome both challenges. Said strengthening materials can thus used both as ballast layer and as soundproof layer. Although such materials may have positive soundproof qualities, they typically have a severe negative impact on the construction of the buildings and the reusability of (components of) the (temporary) building. As wood is susceptible to rot when in contact with moisture or humidity, the wet application composition of for example cement negatively influences the wooden construction of the building. Furthermore, it is difficult, or even impossible, to remove a slab of concrete from the (wooden) construction of the building. This is in particular a burden when a temporary building needs to be removed or replaced. Since it is hard to remove concrete, it is a challenge, and sometimes even impossible, to reuse the construction, the ballast layer and the soundproof layer. It is a first objective of the present invention to provide a sustainable sound dampening element, in particular a reusable and / or recyclable sound dampening element. It is a second objective of the present invention to provide a sound dampening element which is suitable for forming a ballast layer, in particular for use in sustainable and / or temporary buildings. It is a third objective of the present invention to provide a sound dampening element having improved sound dampening properties, in particular for use in (sustainable and / or temporary) buildings. The invention thereto proposes a sound dampening element, in particular a sound dampening element for covering of a floor, a wall and / or a ceiling, in particular of a sustainable and / or temporary building, comprising: - a housing preferably made from one piece of material, wherein said material comprises cardboard and / or paper, in particular wherein said material is entirely composed of cardboard or a combination of cardboard and paper, wherein said housing defines at least one interior space, and wherein the housing comprises at least two base surfaces, - at least one inlay element, wherein said inlay element is at least partially, preferably entirely, arranged in the interior space of the housing, said inlay element comprising: 0 a plurality of wall portions, wherein at least two wall portions, and preferably each wall portion at least partially separates and / or defines one or more hollow chambers, - wherein at least one hollow chamber and preferably each hollow chamber is configured for accommodating sound dampening material, - wherein at least one wall portion and preferably each of the plurality of wall portions extends upwardly and at an angle with respect to, in particular substantially perpendicular to, at least one base surface, and wherein at least part of at least one inlay element, in particular at least part of the plurality of wall portions, is configured for stabilizing said housing, in particular at least one of the at least two base surfaces, and - optionally at least one sound dampening material at least partially accommodated in at least part of the hollow chambers. The sound dampening element according to the present invention provides a reusable sound dampening element, while providing sufficient sound dampening properties. In case the housing is made from one piece of material, the housing, in particular the at least two base surfaces and the lateral surface(s) of the housing, encloses or is configured to enclose, in particular entirely enclose or configured to entirely enclose, the interior space. Consequently, as the at least one inlay element is at least partially, preferably entirely, arranged in the interior space. The hollow chambers of the inlay element are also, preferably entirely, enclosed or enclosable by the housing. As the hollow chambers of the inlay element are configured to accommodate sound dampening material, the sound dampening material accommodated in the hollow chambers is also, preferably entirely, enclosed or enclosable by the housing of the sound dampening element. Hence, this structure limits, in particular circumvents, spillage of sound dampening material. This contributes in improving the reusability of the sound dampening element. It is conceivable that at least one sound dampening material is releasable received in at least part of the hollow chambers. The inlay element may be configured such that the use of additional attachment material, such as glue, to retain at least one sound dampening material in at least one sound dampening element can be omitted. A further benefit of the invention is that the sound dampening element according to the present invention can relatively easily be placed and removed from a (sustainable and / or temporary) building with a reduced, in particular without, negative affect on or to the construction of the building. Therewith, the sound dampening element, directly or indirectly, affects the reusability of (components of) the (temporary) building. The housing of the sound dampening element is preferably at least partially, more preferably entirely, made from recyclable material, namely cardboard and / or paper, resulting in that at least part of the sound dampening element is also recyclable. The housing may at least partially, preferably entirely, be made from cardboard for providing a sufficient strength. Therewith, a reusable and sufficiently strong sound dampening element can be obtained. The sound dampening element according to the present invention is preferably entirely reusable and / or recyclable. The sound dampening element according to the present invention results in the provision of sufficient and improved sound dampening properties. Generally, sound dampening is caused by energy loss of a sound wave or an acoustic wave. As the sound dampening element comprises hollow chambers which are preferably at least partially provided with sound dampening material energy loss of sound wave(s) is improved. For example, in case a sound wave hits the sound dampening element a part of the sound wave may be transmitted into the interior space of the housing and a part of the energy of the sound wave is lost due to hitting the (exterior of the) housing and / or at least one sound dampening material. A part of the incoming sound wave may be at least partially reflected by the housing. A part of the sound wave may enter the interior space of the housing. As the inlay element is provided in the interior space of the housing, the sound wave further loses energy by interaction with the plurality of hollow chambers and / or the sound dampening material received therein. The sound wave particularly loses energy by hitting wall portion(s) of the inlay element and / or by hitting surface(s) of the housing and / or by hitting sound dampening material accommodated in the hollow chambers. Since the inlay element comprises a plurality of hollow chambers, the sound wave is confronted with a plurality of objects which increases the energy loss of a sound wave. As result, the sound dampening element, in particular the plurality of hollow chambers, preferably at least partially provided with sound dampening material, provides sufficient, in particular improved sound dampening properties. Preferably, the sound dampening element is configured for sound insulation, more preferably for sound isolation. Sound insulation can be explained as a reduction of sound transmission by isolation, absorption and / or blocking of a sound wave. Sound isolation can be explained as the blockage of the transmission of a sound wave. Within the context of the present invention, when it is referred to a sound dampening element, also a sound dampening device could be meant. The sound dampening element, or sound dampening device is preferably configured for covering of a floor, a wall and / or a ceiling, in particular of a sustainable and / or temporary building. The sound dampening element, or sound dampening device can also be referred to as a sound dampening floor, wall and / or a ceiling element or a sound dampening floor, wall and / or a ceiling device. The sound dampening element according to the present invention is in particular configured for use as building element in a sustainable building and / or temporary building. The sustainable building may have a temporary character. When it is referred to a temporary building, for example a building with a lifespan of at most or about 5 years can be meant. However, it also conceivable that the sustainable and / or temporary building has a longer lifespan. In a preferred embodiment, the housing is made of a single piece. The housing is preferably made from one piece of material, wherein said material comprises cardboard and / or paper. Preferably, the cardboard and / or paper is at least partially recycled material. In particular, at least one base surface defines a bottom wall of the housing and at least one other base surface defines a top wall of the housing. The housing is preferably cylindrical shaped or prism shaped with an n-sided polygonal base, wherein n z 3, preferably n z 4, more preferably n z 5, such as n = 6. The interior space and the housing are preferably complementary shaped. At least one inlay element comprises a plurality of wall portions, wherein preferably at least two wall portions and more preferably each wall portion separates and / or defines one or more separated hollow chambers. ln particular, the plurality of wall portions together define a plurality of mutually separated hollow chambers. Each of the plurality of wall portions in particular extends upwardly and at an angle with respect to at least one base surface. Each wall portion preferably extends upwardly and perpendicular to at least one base surface. The hollow chambers consequently also extend upwardly and under an angle with respect to, preferably perpendicular to, at least one base surface. At least one hollow chamber could also be referred to as a receiving volume. At least one, preferably the plurality of, wall portions may extend between at least two base surfaces of the housing. A first base surface may be a bottom wall (or lower wall) and a second base surface may be a top wall (or upper wall). At least one wall portion, in particular the plurality of wall portions, may extend upwardly and under an angle with respect to the bottom wall. At least one wall portion, in particular the plurality of wall portions, may extend between the bottom wall and the top wall and are under an angle with respect to the bottom wall and / or the top wall. The wall portions may in that case be configured to keep the two base surfaces at a distance from each other. The inlay element, in particular the plurality of wall portions and / or the hollow chambers, contributes to an improved stabilisation of the housing of the sound dampening element. The inlay element, in particular the plurality of wall portions and / or the hollow chambers, is configured to distribute, in particular substantially evenly distribute, an applied force to the housing. Therewith, a (more) robust sound dampening element is provided. It is conceivable that at least two adjacent hollow chambers are interconnected via a through hole. This could be beneficial for filling and / or dividing the sound dampening material over the hollow chambers. The housing may comprise at least one lateral surface configured for connecting at least two base surfaces of the housing at a distance from each other and wherein the at least one lateral surface and the at least two base surfaces mutually enclose at least one interior space of the housing. At least one lateral surface is preferably a circumferential wall configured for connecting a bottom wall and a top wall at a distance from each other. In particular, the circumferential wall, the bottom wall and the top wall mutually enclose at least one interior space of the housing. The at least one lateral surface may be referred to as a side wall. Optionally, the housing comprises a plurality of lateral surfaces for connecting at least two base surfaces and / or for mutually connecting said plurality lateral surfaces. At least one edge of at least one lateral surface and / or at least one edge of at least one base surface may be a fold edge for foldable connecting at least one lateral surface and at least one base surface. A fold edge preferably extends in a lateral direction and / or a transversal direction of the housing, in particular of a lateral surface and / or of a base surface. The at least one lateral surface and / or the at least one base surface is moveable, in particular foldable, around said fold edge. The fold edge is in particular a transition edge between a lateral surface and a base surface. Optionally, multiple edges of at least one lateral surface and / or of at least one base surface are a fold edges for foldable connecting the at least one lateral surface and the at least one base surface. The housing may comprise at least two lateral surfaces, wherein at least one edge of at least one lateral surface, preferably wherein at least one edge of both lateral surfaces, is a fold edge for foldable connecting the at least two lateral surfaces. It is conceivable that at least two edges of a lateral surface are fold edges for foldable connecting said lateral surface to base surface(s) and / or other lateral surface(s). Additionally or alternatively, at least two edges of a base surface are fold edges for foldable connecting said base surface to lateral surface(s) and / or other base surface(s). The fold edge(s) preferably seamlessly connect the surfaces of the housing, thereby at least partially seamlessly enclosing the interior space. This embodiment is beneficial as it further limits, in particular circumvents, loss and / or spillage of sound dampening material from the interior space of the housing. This contributes both to improved sound dampening properties of the sound dampening element, as well as the reusability thereof. At least one wall portion, preferably multiple wall portions, of at least one inlay element may at least partially extend parallel to at least one lateral surface. In particular, at least part of the hollow chambers at least partially extends parallel to at least part of at least one lateral surface. This particular embodiment contributes to an improved stabilization of the housing of the sound dampening element by the inlay element, in particular the plurality of wall portions and / or hollow chambers. The sound dampening element according to the invention is in particular changeable between an open state wherein at least part of the interior space of the housing is accessible, and a closed state, wherein the interior space of the housing is enclosed by the base surfaces, in particular such that the interior space of the housing is inaccessible. More specifically, the base surfaces of the housing may be mutually moveable, in particular foldable and / or hingable, at least between: an open state, wherein at least part of the interior space of the housing is accessible, and a closed state, wherein the interior space of the housing is enclosed by the base surfaces, in particular such that the interior space of the housing is inaccessible. In the open state, the interior space is accessible such that an inlay element may be placed in and / or may be removed from the interior space of the housing. Furthermore, in the open state sound dampening material may be provided into at least part of the hollow chambers of the inlay element. In the open state, the interior space is preferably surrounded by a base surface and / or lateral surface(s). In the closed state, the interior space is preferably entirely enclosed by the housing, in particular by the base surfaces and the lateral surface(s). Consequently, the inlay element arranged in the interior space is, preferably entirely, enclosed by the housing. Optionally, in the closed state, the at least two bases surfaces may be situated at a distance from each other and preferably substantially parallel. This preferred embodiment is beneficial as it contributes to a simplification of covering and / or removing a covering from a floor, a wall and / or ceiling. This embodiment furthermore contributes to limiting, in particular circumventing, spillage and / or losing sound dampening material. Specifically during at least partially filling at least part of the hollow chambers of the inlay element with sound dampening material when the housing is in the open state, during covering of a floor, a wall and / or a ceiling in a closed state and / or during removal of a covering of sound dampening elements in a closed state. At least two wall portions of the plurality of wall portions of the inlay element may be contacting wall portions for mutually separating at least two adjacent hollow chambers. Additionally or alternatively, at least two wall portions of the plurality of wall portions of the inlay element may be crossing or intersecting wall portions for mutually separating at least two adjacent hollow chambers. Additionally or alternatively, the inlay element may comprise at least two wall portions extending parallel relative to each other. A contact point between two wall portions particularly at least partially separates at least two adjacent hollow chambers. The wall portion or wall portions of a hollow chamber may define the boundary of said hollow chamber. The shape of a hollow chamber and / or the distribution of the plurality of hollow chambers is at least partially, in particular entirely, determined by the mutual position and / or location of the wall portions, in particular of at least two adjacent wall portions. It is conceivable that at least part of the hollow chambers and / or wall portions define a honeycomb structure, a corflute structure and / or a twin wall structure. This could further contribute to the strength and / or rigidity of the inlay element. A further embodiment is conceivable, wherein at least part of the hollow chambers and / or the wall portions defines a grid. The separated hollow chambers may all be located in a transverse plane of the housing, in particular wherein the transverse plane is a plane parallel to at least one base surface. Preferably, the separated hollow chambers are distributed across said transverse plane. A transverse plane may also be referred to as a xy-plane or a horizontal plane of the housing. The hollow chambers are particularly laterally and / or transversally distributed across said transverse plane. This particular distribution of hollow chambers is beneficial for improving the stability of the housing. Furthermore, the distribution of hollow chambers across the transverse plane contributes to improving the sound dampening properties of the sound dampening element. At least one inlay element may at least partially be made from cardboard and / or paper, in particular wherein the plurality of wall portions are at least partially made from cardboard and / or paper. Preferably, the inlay element is entirely made from cardboard. The inlay element may at least partially, preferably entirely, be made from a recyclable material. As the inlay element of the sound dampening element is at least partially, preferably entirely, made from a recyclable material, in particular cardboard and / or paper, the inlay element as such is also recyclable. This further contributes to the reusability of materials of the sound dampening element. Carboard is particularly suitable as material for the inlay element as it contributes to reusability of the inlay element while providing sufficient strength for stabilizing the housing of the sound dampening element. This further improves the strength and reusability of the sound dampening element. At least one hollow chamber, preferably each hollow chamber, may be cylindrical shaped or prism shaped with an n-sided polygonal base, wherein n 2 3, preferably n z 4, more preferably n z 5, such as n = 6. Preferably, at least one hollow chamber is hexagonal prism shaped or honeycomb shaped. At least part of the plurality of hollow chambers may mutually differ in shape. Alternatively, the plurality of hollow chambers have a substantially equal shape. A cylindrical or a prism shaped hollow chamber is beneficial as it allows to accommodate sound dampening material while contributing to stabilizing the sound dampening element. At least one wall portion may at least partially follow a perimeter of at least one hollow chamber. Additionally or alternatively, at least one wall portion of the inlay element may enclose a perimeter defined by at least one hollow chamber. This improves the accommodating properties of the at least one hollow chamber, as it at least partially prevents sound dampening material accommodated in the hollow chambers to move and / or shift between (adjacent) hollow chambers. This further contributes to the sound dampening properties of the sound dampening element. At least part of the hollow chambers have a greater height than width, in particular the height is 1,0 or 1,5 times the width, more in particular the height is two times the width. Preferably, the plurality of hollow chambers have a greater height than width. It was surprisingly found that this spatial arrangement of the hollow chambers contributes to further stabilizing the housing. It is for example conceivable that the diameter of at least one hollow chamber, or the smallest width defined by at least one hollow chamber is in the range of 5-30 mm, preferably in the range of 10- 25mm, more preferably in the range of 15-20 mm. At least one and preferably each hollow chamber may comprise at least one open end for receiving sound dampening material. Optionally, an end opposing said open end of the hollow chamber may be a closed end for accommodating sound dampening material. The closed end may for example be closed by a base surface of the housing. The inlay element may comprise at least one cover layer attachable or attached to at least part of at least one wall portion for closing at least one end of at least one hollow chamber, preferably wherein the cover layer closes one end of each hollow chamber. The cover layer is preferably parallel to at least one base surface, in particular to the bottom wall of the housing. Preferably, the cover layer is connected or connectable to at least one base surface of the housing, in particular the bottom wall. Closing at least one end of a hollow chamber enables to trap sound dampening material in said hollow chamber. This improves the accommodating properties of the hollow chamber(s), as it at least partially prevents sound dampening material accommodated in the hollow chambers to move and / or shift between (adjacent) hollow chambers. This further contributes to the sound dampening properties of the sound dampening element. A bottom side of at least one inlay element may be supported by at least one base surface of the housing, in particular by the bottom wall of the housing. Additionally or alternatively, a top side of at least one inlay element may abut at least one base surface of the housing, in particular the top wall of the housing. Preferably, the inlay element supports at least one base surface, in particular the top wall, of the housing. The inlay element preferably extends between the base surfaces, in particular the bottom wall and the top wall, thereby contributing to stabilizing the housing. At least one wall portion of the plurality of wall portions of the inlay element may be connected to or be connectable to at least one base surface, preferably wherein the plurality of wall portions are connected to or connectable to at least one base surface. At least one inlay element may be rigid preferably at least in a direction perpendicular to at least one base surface, in particular to the top wall and / or bottom wall of the housing. More in particular, the wall portions of the inlay element are rigid in a direction perpendicular to at least one base surface, in particular to the top wall and / or bottom wall of the housing. A compression strength of at least one inlay element in a direction perpendicular to at least one base surface, in particular to a bottom wall and / or top wall of the housing, may be higher than a compression strength of said inlay element in a direction parallel to said base surface, in particular the bottom wall or top wall of the housing. Preferably, a compression strength of the wall portions of the inlay element in a direction perpendicular to at least one base surface, in particular a bottom wall and / or top wall of the housing, may be higher than a compression strength of said wall portions in a direction parallel to said base surface, in particular the bottom wall and / or the top wall of the housing. Therewith, a sufficient stability of the housing, in particular of at the base surface(s) is obtained. The inlay element may occupy at least 90% of the (volume defined by the) interior space of the housing, in particular at least 95% of the interior space, more in particular 99% of the interior space. Stabilization of the housing may increase with a degree of occupation by said inlay element. In addition, sound dampening increases with the amount hollow chambers which are at least partially filled with sound dampening material. The occupation degree of this preferred embodiment contributes to an improved stabilization and an increased in sound dampening. The inlay element comprises 1 to 50 hollow chambers per 100cm2, preferably 15 to 35 hollow chambers per 100 cm2, more preferably 20 to 30 hollow chambers per 100 cm2, and even more preferably 25 hollow chambers per 100 cm2. The amount of hollow chambers per surface area of the inlay element may at least partially, directly or indirectly, be related to sound dampening properties of the sound dampening element. An inlay element comprising a higher density of hollow chambers particularly improves sound dampening of a sound dampening element. However, a too high density of hollow chambers, reduces available accommodation volume for accommodating sound dampening material in the hollow chambers, which degraded sound dampening. It was found that an inlay element comprising 1 to 50 hollow chambers per 100 cm2 contributes to a sufficient, in particular an improved, sound dampening of the sound dampening element. Preferably, each hollow chamber defines an accommodation volume configured for accommodating sound dampening material, wherein a cumulative of accommodation volumes of the plurality of hollow chambers occupies at least 70% of the interior space of the housing, in particular at least 80% of the interior space, more in particular at least 90% of the interior space. Preferably, at least 50% of the cumulative of accommodation volumes of the plurality of hollow chambers is filled with sound dampening material, more preferably at least 70%, even more preferably at least 80%. Optionally, at least part of the hollow chambers are free of sound dampening material. Alternatively, the hollow chambers are free of sound dampening material. The sound dampening material may comprise a non-bound material, in particular a non-bound granular material. Non-limiting examples of non-bound granular material are sand, gravel, stone and / or combinations thereof. Preferably, at least part of at least one sound dampening material is composed of non-bound material, in particular non-bound granular material. The non-bound (granular) material is preferably a dried non-bound (granular) material, which has improved sound dampening properties compared to non-dried non-bound (granular) material. As non-bound material, in particular non-bound granular material, such as sand, gravel and / or stone, typically has a high mass, a sound dampening element provided with said material also contributes in increasing the mass of the sound dampening element. Therewith, the sound dampening element may also be used as ballast layer for improving weight and stability of a floor and / or a wall and / or a ceiling covered by the sound dampening element, in particular in sustainable and / or temporary buildings. Preferably, the hollow chambers of the sound dampening element are configured to accommodate sufficient sound dampening material to provide sufficient weight for compensating the lightweight nature of sustainable and / or temporary buildings. The sound dampening material preferably comprises a non-bound granular material having a grain size between 62,5 um and 2.0 mm, in particular between 0.1 1 mm, more in particular between 0.2 0.75 mm, even more in particular between 0.3 0.65 mm. It was found that sound dampening material with this particular grain size range relatively efficiently absorb energy of a sound wave. This is particularly due to small air pockets formed between grains, which further contribute to sound absorption. The sound dampening material, in particular non-bound (granular) material, may have a bulk density between 1500-1700 kg / m3, in particular between 1500-1600 kg / m3, such as 1550 kg / m3. This bulk density is typically sufficient, in particular good, to provide a sound dampening element forming a ballast layer for improving weight and stability of a floor and / or a wall and / or a ceiling covered by the sound dampening element, in particular in sustainable and / or temporary buildings. Preferably, the sound dampening element is configured to dampen sound in the low frequency range, in particular in the frequency range between 50-1000 Hz, more in particular between 50-450 Hz, even more in particular 50-250 Hz. It was found that sound dampening material having a bulk density between 1500-1700 kg / m3 contributes sufficiently in dampening sound, in particular in the low frequency range. At least part of the housing, in particular at least one base surface and / or at least one lateral surface, may comprise an adhesive layer for at least partially, preferably entirely, closing the interior space. The adhesive layer is particularly configured for connecting different surfaces of the housing, in particular a base surface and / or a lateral surface, more in particular the bottom wall and / or the top wall and / or the circumferential wall. The adhesive layer may for example be an adhesive strip. Enclosing the interior space of the housing is beneficial as it encloses the inlay element, included the sound dampening material if present. This circumvents spillage and / or loss of parts of the sound dampening element. The adhesive layer may comprise an organic or biological adhesive, such as a plant-based adhesive or an animal-based adhesive. Preferably, the adhesive layer is at least partially, preferably entirely, biodegradable. This improves the reusability and / or recyclability of the sound dampening element. The housing, in particular at least part of at least one base surface and / or at least one lateral surface, comprises a locking element for lockingly closing the interior space. The locking element is particularly configured for connecting different surfaces of the housing, in particular a base surface and / or a lateral surface, more in particular the bottom wall and / or the top wall and / or the circumferential wall. The housing may comprise a plurality of locking elements. Enclosing the interior space of the housing is beneficial as it encloses the inlay element, included the sound dampening material if present. This circumvents spillage and / or loss of parts of the sound dampening element. The housing may additionally comprise an adhesive layer. It is however also conceivable that the housing is substantially free from an adhesive. At least one locking element may comprise a first locking part and a second locking part provided at different surfaces of housing, wherein the first locking part and the second locking part are configured to be lockingly coupled for closing the interior space. The first and second locking part are preferably complementary shaped or form-fitting, in particular such that co-acting of the first and second locking part at least partially encloses a part of the interior space. The first locking part may for example be a recess and the second locking part may be a protrusion configured to be coupled such that the interior space is lockingly enclosed. The sound dampening element may further comprise at least one sound absorption layer for additional sound dampening, wherein at least one sound absorption layer is provided in the interior space and / or is at least partially attached or attachable to at least part of the housing. The sound absorption layer may be attached or be attachable to an exterior side of the sound dampening element. The sound absorption layer may for example be glued to at least part of the housing. Preferably, at least part of the sound absorption layer is made from natural fibres. In particular, plant fibres, preferably chosen from the group consisting of: coconut, flax, jute, grass, cork, cotton, hemp and / or combinations thereof, and / or from animal fibres, preferably chosen from the group consisting of: wool, silk and / or combinations thereof. Natural fibres typically have good sound absorption qualities. Air pockets are typically formed between natural fibres which can absorb at least some energy of a sound wave, which dampens sound. Hence, a sound absorption layer at least partially made from natural fibres further improves sound dampening and or / vibration damping of the sound dampening element. Furthermore, the use of a sound absorption layer at least partially made from natural fibres further contributes to the reusability and / or recyclability of the sound dampening element. The sound dampening element may further comprise at least one thermal insulation layer provided in the interior space and / or is at least partially attached to or attachable to at least part of the housing. The thermal insulation layer may be attached or be attachable to an exterior side of the sound dampening element. The thermal insulation layer may for example be glued to at least part of the housing. Preferably, at least part of the thermal insulation layer is made from natural fibres. In particular, plant fibres, preferably chosen from the group consisting of: coconut, flax, jute, grass, cork, cotton, hemp and / or combinations thereof, and / or from animal fibres, preferably chosen from the group consisting of: wool, silk and / or combinations thereof. Natural fibres have good thermal insulation qualities. As the thermal insulation layer is preferably at least partially made from natural fibres the thermal layer is at least partially reusable and / or recyclable, which further contributes in the reusability and / or recyclability of the sound dampening element. The thermal insulation layer may also be configured for additional sound dampening. The thermal insulation layer may form and / or replace a sound absorption layer. The sound dampening element may comprising at least one waterproof and / or water-repellent layer for repelling moisture, wherein at least one waterproof and / or water-repellent layer is attached or attachable to at least part of the housing, in particular to at least part of the exterior of the housing. The sound dampening element may further comprise at least one fire-resistant layer. The invention alternatively also relates to a sound dampening element, in particular a sound dampening floor, wall and / or a ceiling element, comprising at least one housing, wherein the housing is preferably made of a single piece and / or wherein the housing comprises cardboard, wherein at least part the at least one housing defines at least one interior space which is in particular, at least in a closed state, enclosed between at least two base surfaces, at least one inlay element, wherein said inlay element is at least partially, preferably entirely, arranged in the interior space of the housing, wherein at least one inlay element comprises a plurality of wall portions, wherein at least two wall portions and preferably each wall portion at least partially defines and / or separates one or more hollow chambers, wherein at least one hollow chamber, and preferably each hollow chamber is configured for accommodating sound dampening material, wherein at least two wall portions and preferably each of the plurality of wall portions extends upwardly and at an angle with respect to, in particular perpendicular to, at least one base surface. At least one inlay element, in particular the plurality of wall portions thereof, is configured for stabilizing at least part of the at least one housing, in particular at least one of the at least two base surfaces. The sound dampening element may optionally comprise at least one sound dampening material at least partially accommodated in at least part of the hollow chambers. Any of the embodiment described above could also apply for this embodiment of the sound damping element. The invention further relates to a covering of a floor, a wall and / or a ceiling by a plurality of sound dampening elements according to the present invention. The invention further relates to a net, in particular a planar foldable net, of a foldable housing for forming (by folding) the housing of a sound dampening element according to the present invention. A net or a plano of a foldable housing particularly comprises connected base surfaces and lateral surfaces. The base surfaces and lateral surfaces are mutually connected via fold edges for foldable connecting the lateral surfaces and base surfaces. The lateral surface(s) and / or the base surface(s) are foldable around said fold edge(s). The invention further relates to a kit-of-parts of a sound dampening element for covering of a floor, a wall and / or a ceiling, comprising: - a housing according to present invention or a net for forming the housing according to the present invention, - an inlay element according to the present invention, - optionally, at least one sound dampening material configured to be accommodated in the hollow chambers of the inlay element, in particular according to the present invention, - optionally, a sound absorption layer, preferably at least partially made from natural fibres, - optionally, a thermal insulation layer, and - optionally, a waterproof and / or water-repellent layer. The invention furthermore relates to a method of producing a sound dampening element, in particular a sound dampening element according to the present invention, comprising the steps of: A) providing one piece of cardboard, B) cutting said one piece of cardboard along the perimeter of a net of a three- dimensional shape comprising two base surfaces and preferably at least one lateral surface, C) folding the cut-out net, thereby forming a housing which defines at least one interior space, D) providing an inlay element comprising a plurality of wall portions, wherein each wall portion at least partially separates one or more hollow chambers, E) placing the inlay element in the interior space of the housing such that the wall portions of the inlay element extend upwardly and at an angle with respect to, in particular perpendicular to, at least one base surface, F) optionally, providing at least one sound dampening material and at least partially filling at least part of the hollow chambers with the at least one sound absorbing material, G) optionally, closing the interior space of the housing, H) optionally, providing at least one sound absorption layer, preferably at least partially made from natural fibres, and placing at least one sound absorption layer in the interior space of the housing and / or attaching at least one sound absorption layer to at least part of the housing, in particular an exterior side of the housing, and I) optionally, providing at least one thermal insulation layer, and placing at least one thermal insulation layer in the interior space of the housing and / or attaching at least one thermal insulation layer to at least part of the housing, in particular an exterior side of the housing. The method according to the present invention provides a sound dampening element making efficiently use of materials. Therewith, a sustainable sound dampening element is obtained. The same benefits of the sound dampening element according to the present invention apply for the sound dampening element obtained via the method according to the present invention. The present invention will hereinafter be further elucidated on the bases of the non- limitative exemplary embodiments shown in the following figures. Herein shows: - figure 1 a perspective front view of the sound dampening element according to an embodiment of the present invention; - figure 2 a side view of a housing of a sound dampening element according to an embodiment of the present invention; - figure 3 a perspective side view of an embodiment of a sound dampening element according to the present invention; and - figures 4a-4f method steps of producing a sound dampening element according to an embodiment of the present invention. Figure 1 shows a sound dampening element 100 according to the present invention. The sound dampening element 100 comprises a housing 110 defining an interior space 111. The housing 110 of the shown embodiment comprises two base surfaces, in particular a bottom wall (not visible) and a top wall 102. The housing 110 of the shown embodiment further comprises a plurality of lateral surfaces 103a, 103b. The lateral surfaces 103a, 103b are connected to a base surface. A first set of lateral surfaces 103b is connected to a first base surface, in particular the bottom wall. A second set of lateral surfaces 103a are connected to a second base surface 102, in particular a top wall. In the shown embodiment, the interior space 109 is surrounded by a plurality of lateral surfaces 103b or side walls. The shown sound dampening element 100 is in an open state, wherein at least part of the interior space 109 is accessible. The sound dampening element 100 further comprises an inlay element 104 comprising a plurality of wall portions 111. Each wall portion 111 separates one or more hollow chambers 105 configured for receiving sound dampening material. The wall portions 111 extend upwardly and at an angle with respect to at least one base surface, in particular with respect to at least a bottom wall. Hence, also the hollow chambers 105 extend upwardly and under angle with respect to at least one base surface, in particular at least with respect to at least a bottom wall. At least a part of the hollow chambers 105 has a hexagonal shape. In the shown example extend the wall portions 111 upwardly and at an angle with respect to the bottom wall (not visible). In the shown open state, at least part of the hollow chambers 105 can be filled with sound dampening material. An end side of the hollow chambers 105, in particular a bottom end side, is preferably closed by at least one base surface, preferably the bottom wall. During operational use, the sound dampening element is in a closed state, wherein the interior space 109 of the housing 110 is enclosed by the base surfaces 102, and particularly also by the lateral surfaces 103a, 103b. In the closed state, the inlay element 104 provided in the interior space 109 is preferably entirely enclosed by the housing 110. In the closed state, at least part of the wall portions 111 extend between the base surfaces, in particular between the bottom wall and top wall 102. A bottom side of at least one inlay element 104 may be supported by at least one base surface, in particular the bottom wall, and / or a top side of at least one inlay element 104 may abut at least one other base surface, in particular the top wall 102. In the closed state, the inlay element 104 preferably extends between the base surfaces. The housing 110 is made from one piece of material, wherein the material comprises cardboard and / or paper. In the closed state, the first set of lateral surfaces 103b and the second set of lateral surfaces 103a may co-act for enclosing the interior space 109. For example, at least part of at least one lateral surface 103, 103b may be provided with an adhesive layer 108 for mutually connecting the first set of lateral surfaces 103b and the second set of lateral surfaces 103a. Therewith, the interior space 109 is at least partially sealingly enclosed. Additionally or alternatively, the adhesive layer 108 is provided on at least one lateral surface 103a and / or on at least one base surface for at least partially connecting said lateral surface 103a and base surface, such that the interior space 109 is at least partially sealingly enclosed. Said mutual connection may contribute to a stability of the sound dampening element 100. The lateral surfaces 103a of the second base surface or top wall 102 have an side edge 106. The side edge 106 is an fold edge. The fold edge allows to fold the lateral surface 103a with respect to the base surface or top wall 102, such that the lateral surface 103a and the base surface or top wall 102 are under an angle. In this embodiment, the lateral surface 103a and the base surface or top wall 102 are substantially perpendicular with respect to each other. The lateral surfaces 103b of the first base surface or bottom wall also have an side edge 107. This side edge 107 also is a fold edge. The fold edge allows to fold the lateral surface 103b with respect to the base surface or bottom wall, such that the lateral surface 103a and the base surface or bottom wall are under an angle. The lateral surfaces 103a, comprise have an side edge 107. This side edge 107 also is a fold edge. The fold edge allows to fold the lateral surface 103b with respect to the base surface or bottom wall, such that the lateral surface 103a and the base surface or bottom wall are under an angle. At least one other side edge of the lateral surface 103b is a fold edge 112 for foldable connecting at least two adjacent lateral surfaces 103b. The fold edge 112 allows to fold the lateral surface 103b with respect to an adjacent lateral surface 103b, such that adjacent the lateral surface 103b are under an angle, in particular perpendicular. Figure 2 shows a side view of a housing 110 of a sound dampening element 100 according to the present invention. The housing 110 is made from one piece of material, wherein said material comprises cardboard. The interior space 109 is particularly formed by a first base surface 101, in particular the bottom wall, and therewith connected lateral surfaces 103b, or side walls. The interior space 109 can be enclosed by a second base surface 102, in particular the top wall. The interior space 109 can receive an inlay element 104. The shown lateral surfaces 103b and the first base surface 101 are mutually connected. Part of lateral surfaces 103b extend in a longitudinal direction of the first base surface 101 and part of lateral surfaces 103b extend in a lateral direction of first base surface 101. In this embodiment, the lateral surfaces 103b extending in a lateral direction of the first base surface 101 are extending beyond a length or perimeter of the first base surface 101 in a lateral direction. A portion of the lateral surface 103b that extend beyond the perimeter or length of the first base surface 101 in a lateral direction can be folded towards a lateral surface 103b of the first base surface 101 that extend in a longitudinal direction of the first base surface 101. Said portion of the lateral surface 103b extending in the lateral direction can be attached to the lateral surface 103b extending in the longitudinal direction, preferably wherein at least one of the lateral surfaces 103b is at least partially provided with an adhesive layer. It is also conceivable that a length of the lateral surfaces 103b of the first base surface 101 extending in a longitudinal direction are extending beyond a perimeter or length of the first base surface 101 in a longitudinal direction. Figure 3 shows the sound insulating element 100 according to figure 1. At least part of the hollow chambers 105, in particular all hollow chambers 105, of the inlay element 104 are at least partially, in particular entirely, filled with at least one sound dampening material 113. The sound dampening material 113 contributes to the dampening of sound. An improved sound dampening effect is obtained when more hollow chambers 105 are filled with sound dampening material 113. Additionally or alternatively, an improved sound dampening effect is obtained when the hollow chambers 105 accommodate more sound dampening material. The sound dampening material 113 comprises, or even is, preferably a non-bound material. In this particular embodiment the sound dampening material 113 comprises non- bound granular material, in particular sand. The sound dampening element 100 may function optimally when as many hollow chambers 105 are at least partially, preferably entirely, filled with the sound absorbing material 113. Figures 4a-4f depicts a method of producing a sound insulating element 100. Said method may comprise the hereinafter described steps. In this embodiment, the housing 110 is made from one piece of material, wherein said material comprises cardboard and / or paper. As the housing 110 is made from one piece, a piece of cardboard and / or paper 114 is provided. The piece of cardboard and / or paper 114 is shown in Figure 4a. This piece of cardboard and / or paper 114 can be cut along a perimeter of a net 115 or a predetermined folding structure. Said net 115 is a net of a foldable housing 110 for forming the housing 110 of a sound dampening element 100. The net 115 comprises two base surfaces 101, 102 and a plurality of lateral surfaces 103. The cut-out net 116 is depicted in Figure 4b. The housing 110 is formed by folding the cut-out net 116. The base surfaces 101, 102, and lateral surfaces 103 are interconnected. The cut-out net 116 can be folded such that the at least part of the interconnected base surfaces 101, 102 and the plurality of lateral surfaces 103 mutually enclose at least part of at least one interior space 109. The lateral surfaces 103 and the base surfaces 101, 102 are preferably folded relative to each other around a plurality of folding edges 117. In figure 4c, part of the lateral surfaces 103 and at least one base surface 101 are folded, such that an interior space 109 is surrounded or enclosed. The formed housing 110 in figure 4c is in an open state, wherein the interior space 109 is at least partially accessible. This open state is formed by unaligned base surfaces 101, 102. The foldable housing 110 particularly comprises rigid surfaces 101-103. A foldable housing 110 comprising rigid lateral surfaces 103 and base surfaces 101, 102 contributes to the stability of the (to be formed) sound dampening element 100. Once the cut-out net 116 is at least partially folded, an inlay element 104 can be placed in the interior space 109. Said inlay element 104 comprises a plurality of wall portions 111, wherein each wall portion 111 at least partially separates one or more hollow chambers 105. The inlay element 104 is placed in the interior space 109 of the housing 110 such that the wall portions 111 of the inlay element 104 extend upwardly and at an angle with respect to, in particular perpendicular to, at least one base surface 101. In figure 4e, at least part, in particular all, hollow chambers 105 are at least partially, preferably entirely, filled with at least one sound dampening material 113. Subsequently, the second base surface 102 of the housing 110 can be moved to a closed state, to enclose the interior space 109, as shown in figure 4f. In the closed state, the two base surfaces 101, 102 are substantially aligned. The closed sound dampening element 100 contributes to improving sound dampening by enclosing the inlay element 104, and hence the sound dampening material 113, in the interior space 109. Thereby, since the sound dampening material 113 is trapped in the housing 110, in particular the interior space 109. It will be apparent that the invention is not limited to the working examples shown and described herein, but that numerous variants are possible within the scope of the attached claims that will be obvious to a person skilled in the art. The verb comprise and conjugations thereof used in this patent publication are understood to mean not only comprise, but are also understood to mean the phrases contain, substantially consist of, formed by and conjugations thereof.

Claims

1. Sound-dampening element for covering a floor, a wall and / or a ceiling, comprising: - a housing manufactured from a single piece of material, whereby the aforementioned material includes cardboard, where the aforementioned enclosure defines at least one interior space, and where the housing comprises at least two base surfaces, - at least one inlay element, whereby the aforementioned inlay element at least is partially, preferably completely, installed in the interior space of the housing, comprising: o multiple wall sections, where each wall section at least partially separates one or more hollow chambers, where each hollow chamber is designed for accommodating sound-dampening material, - whereby each of the multiple wall sections extends upwards and at an angle to, in particular perpendicular of, extends from at least one base surface, and where the inlay element, in particular the multiple wall sections, is designed for stabilizing the aforementioned housing, in the in particular at least one of the at least two basic surfaces, and - at least one sound-dampening material at least partially included in at least part of the hollow chambers.

2. Sound attenuation element within the meaning of claim 1, where at least one base surface defines a bottom wall of the housing and where at least one other base surface defines a top wall of the housing.

3. Sound attenuation element pursuant to Claim 1 or Claim 2, where the housing comprises at least one lateral surface arranged for on a connecting at least two base surfaces of the distance from each other housing and where the at least one lateral surface and the at least two base surfaces mutually at least one interior space of the housing enclose, preferably where at least one lateral surface is a The perimeter wall is designed to connect a at a distance from each other a bottom wall and a top wall.

4. Sound attenuation element within the meaning of claim 3, where at least one edge of at least one lateral surface and / or at least one edge of at least one base surface a folding edge is for the foldable connection of at least one lateral surface and at least one base surface.

5. Sound attenuation element pursuant to Claim 3 or Claim 4, where the housing comprises at least two lateral surfaces, and where at least one edge of at least one lateral surface, preferably where at least one edge of both lateral surfaces, a folding edge is for the foldable connecting at least two lateral surfaces.

6. Sound attenuation element in accordance with one of claims 3-5, whereby at at least one wall section, preferably where the multiple wall sections, of at least one insert element is at least partially parallel to at least one extends lateral surface.

7. Sound attenuation element in accordance with one of the preceding claims, where the housing is cylindrical or prismatic with an n-sided polygonal basis, where nz 3, preferably nz 4, with further preference nz 5, as n = 6.

8. Sound attenuation element in accordance with one of the preceding claims, where the base surfaces of the housing are movable relative to one another, in the particularly foldable, are at least between: - an open state, whereby at least part of the interior space of the housing is accessible, and - a closed state, in which the interior space of the housing is enclosed is due to the basic surfaces, in particular such that the interior space of the housing is inaccessible.

9. Sound attenuation element in accordance with one of the preceding claims, where at least two wall sections of the multiple wall sections of the insert element contacting wall sections are for mutually separating ten at least two adjacent hollow chambers.

10. Sound attenuation element in accordance with one of the preceding claims, where at least two wall sections of the multiple wall sections of the Insert element intersecting wall sections are for mutually separating at least two adjacent hollow chambers.

11. Sound attenuation element in accordance with one of the preceding claims, where the multiple separated hollow chambers all in a transverse plane of the are located in the housing, where the transverse plane is a plane that is parallel. to at least one base surface.

12. Sound attenuation element in accordance with one of the preceding claims, where the inlay element is made at least partially of cardboard, in the particular, where the multiple wall sections are at least partially made of cardboard manufactured 13. Sound attenuation element in accordance with one of the preceding claims, where at least one hollow chamber, preferably where each hollow chamber, is cylindrical or prismatic with an n-sided polygonal base, where nz 3, preferably nz 4, with further preference nz 5, as n = 6.

14. Sound attenuation element in accordance with one of the preceding claims, where at least one wall section of the insert element has a defined perimeter enclosed by at least one hollow chamber.

15. Sound attenuation element in accordance with one of the preceding claims, where at least part of the hollow chambers is taller than it is wide, in the particular where the height is 1.5 times the width of the hollow chamber, with further preference where the height is twice the width of the hollow chamber.

16. Sound attenuation element in accordance with one of the preceding claims, where each hollow chamber comprises at least one open end for receiving sound-dampening material.

17. Sound attenuation element in accordance with one of the preceding claims, where a bottom side of at least one insert element by at least one base surface of the housing, in particular due to the bottom wall of the housing, is supported.

18. Sound attenuation element in accordance with one of the preceding claims, where an upper side of at least one inlay element to at least one base surface of the housing, in particular the top wall of the housing, borders.

19. Sound attenuation element in accordance with one of the preceding claims, where at least one insert element is rigid in a direction perpendicular to at least one base surface.

20. Sound attenuation element in accordance with one of the preceding claims, where the insert element occupies at least 90% of the interior space of the housing occupies, in particular at least 95% of the interior space, more in the particular 99% of the interior space.

21. Sound attenuation element in accordance with one of the preceding claims, where the insert element comprises 1 to 50 hollow chambers per 100 cm², preferably 15 up to 35 hollow chambers per 100 cm², further preferably 20 to 30 hollow chambers per 100 cm².

22. Sound attenuation element in accordance with one of the preceding claims, where each hollow chamber defines a recording volume configured for recording of sound-dampening material, and where a cumulative of recording volumes of the multiple hollow chambers at least 70% of the interior space of the housing occupies, in particular at least 80% of the interior space, more in the particularly at least 90% of the interior space.

23. Sound attenuation element in accordance with one of the preceding claims, where a compression strength of at least one insert element in one direction perpendicular to at least one base surface is higher than a compression strength of the aforementioned insert element in a direction parallel to the aforementioned base surface 24. Sound attenuation element in accordance with one of the preceding claims, where at least one wall section of the multiple wall sections of the inlay element is connected or connectable to at least one base surface, at preference where the multiple wall sections are connected or connectable with ten at least one base surface.

25. Sound attenuation element in accordance with one of the preceding claims, where the inlay element comprises at least one top layer attachable or attaches to at least a part of at least one wall section for closing ten at least one end of at least one hollow chamber, preferably where the covering layer one end of each hollow chamber closes.

26. Sound attenuation element in accordance with one of the preceding claims, where the sound-damping material comprises an unbound material, in the particularly an unbound granular material, such as sand, gravel, stone and / or a combination thereof.

27. Sound attenuation element within the meaning of claim 24, whereby the sound-dampening material comprises an unbound granular material that a grain size between 62.5 µm and 2.0 mm has, in particular between 0.1-1 mm, more specifically between 0.2-0.75 mm, even more specifically between 0.3- 0.65 mm.

28. Sound attenuation element within the meaning of claim 24 or 25, where the soundproofing material has a bulk density between 1500-1700 kg / m3, in the particularly between 1500-1600 kg / m3, such as 1550 kg / m3.

29. Sound attenuation element in accordance with one of the preceding claims, where the sound attenuation element is designed to attenuate sound in the low frequency range, in particular in the frequency range between 50-1000 Hz, more specifically between 50-450 Hz, even more specifically 50-250 Hz.

30. Sound attenuation element in accordance with one of the preceding claims, whereby at least a part of the housing, in particular at least one base surface and / or at least one lateral surface, comprising an adhesion layer for at least partially closing off the interior space.

31. Sound attenuation element in accordance with one of the preceding claims, where the housing, in particular at least a part of at least one base surface and / or at least one lateral surface, a locking element includes for locking the interior space.

32. Sound attenuation element within the meaning of claim 31, where at least one locking element comprises a first locking part and a second locking part provided on various surfaces of the housing, where the first The locking part and the second locking part are designed to lock. to be connected for closing the interior space.

33. Sound attenuation element in accordance with one of the preceding claims, comprising at least one layer for sound absorption for additional sound attenuation, where at least one layer for sound absorption is provided in the interior space and / or is at least partially attached or attachable to at at least part of the housing.

34. Sound attenuation element within the meaning of claim 33, where at least one part of the sound absorption layer is made of natural fibers, in the particularly of plant fibers, preferably chosen from the group consisting of: coconut, flax, jute, grass, cork, cotton, hemp and / or combinations thereof, and / or of animal fibers, preferably chosen from the group consisting of: wool, silk and / or combinations thereof.

35. Sound attenuation element in accordance with one of the preceding claims, comprising at least one thermal insulation layer provided in the interior space and / or at least partially attached or attachable to at least a part of the housing.

36. Sound attenuation element in accordance with one of the preceding claims, comprising at least one waterproof and / or water-repellent layer for the repelling moisture, with at least one waterproof and / or water-repellent layer is attached or attachable to at least a part of the housing, in the particular to at least a part of the exterior of the housing.

37. Sound attenuation insulation element according to one of the preceding conclusions, where the hollow chambers are free of sound-dampening material.

38. Covering of a floor, a wall and / or a ceiling formed by multiple sound attenuation elements in accordance with one of claims 1-37.

39. A construction sheet of a foldable housing for forming the housing of a sound-attenuating element in accordance with one of claims 1-37.

40. Set of parts of a sound-dampening element for covering a floor, a wall and / or a ceiling, comprising: - a housing in accordance with one of claims 1-37 or a construction board for the formation of the casing in accordance with claim 39, - an insert element pursuant to one of claims 1-37, - optional, at least one soundproofing material designed to to be incorporated into the hollow chambers of the insert element, in the particularly according to one of conclusions 1-37, - optional, a layer for sound absorption, preferably at least partially made from natural fibers, - optional, a thermal insulation layer, and - optional, a waterproof and / or water-repellent layer.

41. Method for producing a sound attenuation element, in the in particular a sound-dampening element according to one of claims 1-37, comprising the steps of: A) providing one piece of cardboard, B) cutting the aforementioned single piece of cardboard along the perimeter of a construction sheet of a three-dimensional shape with two base surfaces includes and preferably at least one lateral surface, C) folding the cut-out construction plate, creating a housing that at least one interior space defines is formed, D) providing an inlay element comprising multiple wall sections, where each wall section has at least partially one or more hollow chambers separates, E) placing the insert element in the interior of the housing such that the wall sections of the insert element are positioned upwards and at an angle angle with respect to, in particular perpendicular to, at least one extend base surface, F) optional, providing at least one soundproofing material and at least partially filling at least a part of the cavity rooms with at least one sound absorption material, and G) optional, closing the interior of the housing.

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