KR20160069965A - Floor Board For Construction - Google Patents

Abstract

The present invention relates to a floor material for a building capable of efficiently preventing inter-floor noises by being installed on a floor in a building. The floor material for a building according to the present invention installed on an upper side of an inner finish mortar layer comprises: a supporting layer; a first foaming layer formed on an upper side of the supporting layer; a ferroelectric layer installed on an upper side of the first foaming layer; a second foaming layer installed on an upper side of the ferroelectric layer; and a protective layer installed on an upper side of the second forming layer.

Description

{Floor Board For Construction}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a flooring for a building to be installed on an inner floor of a building, and more particularly to a flooring for a building and a method of manufacturing the same.

Recently, multi - layered houses and apartments have been exposed to interstory noise problems, and there have been active discussions on ways to solve these problems and legal institutionalization.

1 is a cross-sectional view showing an example of a building construction standard that is currently standardized. 1, the lightweight foamed concrete layer 2 and the finish mortar layer 3 are sequentially laminated on the upper side of the concrete slab layer 1. A sound insulating mat (4) is provided between the concrete slab layer (1) and the lightweight foamed concrete layer (2) for noise shielding, and a side buffer material (5) is provided between the laminate and the side wall.

The sound insulating mat 4 is for blocking the noise generated in the upper layer from being transmitted to the lower layer through the medium of the building, and it is mainly composed of a material capable of absorbing sounds.

In the current construction standard shown in the drawing, the noise generated in the upper layer is absorbed through the sound-insulating mat 4, and the shock absorbing material 5 is installed on the inner side wall of the side wall so that the impact applied to the closed mortar layer 3 To the neighboring space.

Korean Utility Model Registration No. 20-0379075 discloses a noise preventing member having a sound absorbing and sound insulating effect by using first and second foam layers having different densities, respectively. This is constructed by stacking foamed porous layers having different densities to disperse vibration to prevent noise.

However, the above methods are disadvantageous in that there is a limit to effectively remove the interlayer noise problem generated in a building.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a flooring for building, which is installed on the upper side of a closed mortar layer and can effectively prevent noise generated in a space inside the building from being transferred to another adjacent space, The technical purpose is to provide.

In order to achieve the above object, a building floor material according to a first aspect of the present invention is a floor material for building to be installed on the upper side of an interior finishing mortar layer of a building. The floor material is composed of a support layer, a foam layer and a protective layer, And a ferroelectric layer is provided between the layer and the support layer.

According to a second aspect of the present invention, there is provided a floor material for a building, which is installed on the upper side of a mortar layer of an interior finishing of a building, comprising: a support layer; a foam layer; and a protective layer, And a ferroelectric layer is provided on the ferroelectric layer.

According to a third aspect of the present invention, there is provided a flooring material for a building to be installed on the upper side of an interior finishing mortar layer of a building, comprising: a support layer; a first foamed layer formed on the upper side of the support layer; A ferroelectric layer provided on the upper side, a second foamed layer provided on the upper side of the ferroelectric layer, and a protective layer provided on the upper side of the second foamed layer.

And the ferroelectric layer is formed of PVDF.

And the ferroelectric layer is a? Phase PVDF.

And the ferroelectric layer is further mixed with a metal.

Further, the foamed layer may further include a ferroelectric material.

According to the present invention configured as described above, the interlayer noise is lowered by converting the impact energy or sound wave energy propagated through the bottom material into electrical energy.

FIG. 1 is a sectional view showing an example of a building construction standard that is currently standardized.
2 is a cross-sectional view showing a structure of a general floor material.
3 is a cross-sectional view of the main part showing a structure of a floor material according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the embodiments described below are illustrative of one preferred embodiment of the present invention, and examples of such embodiments are not intended to limit the scope of the present invention.

First, the basic concept of the present invention will be described.

Typically, interlayer noise is achieved through the transmission of inadequate noise or vibration. In a space of the building, the noise generated in the upper layer, that is, the inappropriate sound, is transmitted to the adjacent space through the sidewall of the building, the slab layer, or the pipe. This propagation of noise is related to the medium in which the noise is transmitted. When various porous layers are formed in the medium, a considerable amount of noise is absorbed by the porous layer, so that the transmission of noise can be minimized.

On the other hand, the shock noise caused by the vibration of the building is different from the general noise. This impact noise is generated when the building is impacted by the building and is vibrated by the impact. Impact noise is related to the natural frequency of the building. In order to reduce the impact noise, it is required to minimize the shock that can be applied to the building by using various cushioning materials.

Most of the currently used interlayer noise absorbing materials are provided with a porous layer so as to absorb the sound transmitted through the building. Such a noise preventing member is not effective in removing the interlayer noise of a building.

In the present invention, a ferroelectric film is employed to remove interlayer noise. The ferroelectric material film vibrates when an electric signal is applied from the outside to generate a sound corresponding to the electric signal, whereas when external vibration is applied, the electric signal corresponding to the vibration is generated. That is, physical vibration energy is converted into electrical energy.

1, the impact generated in the normal building is applied to the upper side of the closed mortar layer 3, and the vibration due to the impact is transmitted to the lightweight foamed concrete layer 2 and the slab layer 1, A noise corresponding to the noise is generated. Then, the noise is transmitted to the adjacent space, thereby generating the interlayer noise.

On the upper side of the finished mortar layer 3, a floor material is usually installed. In the present invention, a ferroelectric film is provided on the bottom material to minimize the vibration transmitted to the finished mortar layer 3 through the bottom material, thereby reducing interlayer noise.

2 is a cross-sectional view showing the structure of a flooring material currently in use. Normally, the bottom layer comprises a supporting layer 21, a foam layer 22 and a protective layer 23. Herein, the protective layer 23 may include a UV cured layer or a print layer.

The ferroelectric film or ferroelectric layer according to the present invention may be used either between the support layer 21 and the foam layer 22 or between the foam layer 22 and the protective layer 23 or preferably between the foam layer 22 and the protective layer 23, Respectively.

3 is a cross-sectional view showing a case where a ferroelectric layer is provided inside the foam layer. Reference numerals 221 and 222 in the drawings denote foam layers. The foam layers 221 and 222 may be the same or may be composed of different foam layers.

The foam layers 221 and 222 are formed by mixing foaming agents with organic materials including, for example, PVC, nylon, polyester, and aqueous acrylic, ethylvinyl acetate (EVA), and polyvinyl alcohol (PVA), followed by foaming. Also preferably, a plasticizer may be added at this time. When the foam layers 221 and 222 are foamed, it is preferable that at least two kinds of pores 40 having different sizes are formed. When pores 40 of various sizes are formed in the foam layers 221 and 222, sound energy is reflected and diffracted by the pores 40 when sound or noise is transmitted through the foam layers 221 and 222 The sound absorption function is further improved.

On the other hand, the ferroelectric layer 30 is formed between the foam layers 221 and 222. At this time, for example, PVDF, preferably β-phase PVDF is used as the ferroelectric layer 30. More preferably, the ferroelectric layer 30 includes a metal material such as iron (Fe).

4, when the ferroelectric layer 30 is provided on the foam layers 221 and 222, a large amount of pores 40 provided in the foam layers 221 and 222 and the ferroelectric layer 30 are brought into contact with each other . When an impact is applied from the upper side of the bottom material so that the vibration is propagated through the foam layers 221 and 222, the ferroelectric layer 30 vibrates due to the vibration. At this time, the degree of freedom of vibration of the ferroelectric layer 30 is further increased by the pores 40. As described above, when the ferromagnetic layer 30 receives an impact from the outside, it vibrates and converts the impact energy into electric energy. When the impact energy is applied to the ferroelectric layer 30 by an external impact, the ferroelectric layer 30 vibrates and converts some impact energy into electric energy while the rest of the impact energy is converted into sound by the vibration of the ferroelectric layer 30 . The sound energy converted from the impact energy is absorbed by the pores 40.

In the case of the noise generated from the upper side of the bottom material, that is, in the case of the sound wave energy, it is absorbed by the pores 40 of the foam layers 221 and 222 while propagating through the bottom material. At this time, the size of the pores 40 is related to the frequency of the sound energy absorbed by the pores 40. That is, the smaller the size of the pores 40, the more energy is absorbed in the low frequency band. The interstory noise, which is a major problem in buildings, is a low frequency band sound wave. It is necessary to reduce the size of the pores 40 provided in the foam layers 221 and 222 to be less than nm in order to more reliably reduce such interlayer noise. However, the formation of such micropores requires more sophisticated techniques and manufacturing costs.

If the ferroelectric layer 30 is provided inside the foam layers 221 and 222 or adjacent to the foam layers 221 and 222, the ferroelectric layer 30 vibrates due to the sonic energy traveling through the bottom material, Into electrical energy. That is, it absorbs the sound wave energy. At this time, if the composition ratio of the metal material such as iron contained in the ferroelectric layer 30 is appropriately adjusted, the resonant frequency of the ferroelectric layer 30 can be appropriately set.

Particularly, in the above embodiment, the ferroelectric material may be mixed into the mixture of the organic material and the foaming agent when the foam layers 221 and 222 are formed. Also in this case, a metal material such as iron may be further mixed with the ferroelectric material.

When the ferroelectric material is mixed when the foam layers 221 and 222 are formed, it is possible to further promote the resonance effect in the ferroelectric layer 30 by changing the resonant frequency of the foam layers 221 and 222, The sound waves can be more effectively removed by the foam layers 221 and 222 or the ferroelectric layer 30 by resonantly converting the sound wave energy of the sound wave energy into the sound wave energy of a higher frequency band.

The embodiments according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the scope of the present invention.

For example, in the above-described embodiment, the formation of one ferroelectric layer has been described. In the present invention, however, it is also preferable to provide a plurality of ferroelectric layers.

21: support layer, 221, 222: foam layer,
30: ferroelectric layer, 40: porosity

Claims (15)

1. A flooring for building to be installed on the upper side of a mortar layer of an interior finish of a building,
A support layer, a foam layer and a protective layer,
And a ferroelectric layer is provided between the foam layer and the support layer. The method according to claim 1,
Wherein the ferroelectric layer is made of PVDF. 3. The method of claim 2,
Wherein the ferroelectric layer is a? Phase PVDF. The method according to claim 1,
Wherein the ferroelectric layer is further mixed with a metal. The method according to claim 1,
Wherein the foam layer further comprises a ferroelectric material. 1. A flooring for building to be installed on the upper side of a mortar layer of an interior finish of a building,
A support layer, a foam layer and a protective layer,
And a ferroelectric layer is provided between the foam layer and the protective layer. The method according to claim 6,
Wherein the ferroelectric layer is made of PVDF. 8. The method of claim 7,
Wherein the ferroelectric layer is a? Phase PVDF. The method according to claim 6,
Wherein the ferroelectric layer is further mixed with a metal. The method according to claim 6,
Wherein the foam layer further comprises a ferroelectric material. 1. A flooring for building to be installed on the upper side of a mortar layer of an interior finish of a building,
A support layer,
A first foam layer formed on the support layer,
A ferroelectric layer provided above the first foamed layer,
A second foam layer provided on the upper side of the ferroelectric layer,
And a protective layer provided on the second foam layer. 12. The method of claim 11,
Wherein the ferroelectric layer is made of PVDF. 13. The method of claim 12,
Wherein the ferroelectric layer is a? Phase PVDF. 12. The method of claim 11,
Wherein the ferroelectric layer is further mixed with a metal. 12. The method of claim 11,
Wherein the first or second foam layer further comprises a ferroelectric material.

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