JP7246181B2 - Sound absorbing interior material - Google Patents

Description

The present invention relates to sound absorbing interior materials.

BACKGROUND ART Sound-absorbing interior materials are used for walls, ceilings, and the like of individual houses, collective housing, office buildings, commercial facilities, factories, concert halls, and the like. As an interior material having sound absorption properties, for example, Patent Document 1 discloses a decorative sheet including a decorative film layer having a large number of fine holes, an adhesive layer, and a glass cloth layer. Sound absorbers have been proposed that are attached with
The sound absorbing material described in Patent Document 1 requires a back air layer between itself and the structure, and has a glass cloth layer in order to prevent breakage or the like when receiving an impact. Since the glass cloth layer is inferior in adhesiveness, in order to actually construct a wall surface with the interior material described in Patent Document 1, a decorative sheet is attached to a frame such as an aluminum frame in advance to form an interior material. It is necessary to arrange a plurality of interior materials side by side. In addition, the interior material described in Patent Document 1 has a problem in that when the interior materials are arranged side by side, joints are formed between the frames, resulting in poor design.

JP 2013-44983 A

An object of the present invention is to provide a sound-absorbing interior material with excellent workability and high design.

1. a substrate;
a joiner that is fixed to the base material and has a fitting portion and an adhesive portion;
a sound absorbing base fitted to the fitting portion and disposed along the base material;
a porous sheet having a large number of through-holes, which is attached to the adhesive part so as to cover the sound absorbing substrate;
A sound absorbing interior material comprising:
2. 1. The sound absorbing substrate is a glass wool board or a rock wool board. The sound-absorbing interior material described in .
3. the sound-absorbing substrate has recesses at the ends,
1. The sound absorbing base and the joiner are fitted flush with each other. or 2. The sound-absorbing interior material described in .
4. 1. Putty is provided at a boundary between the sound absorbing base and the fitting portion, and the boundary is smoothly inclined. or 2. The sound-absorbing interior material described in .

The sound-absorbing interior material of the present invention has excellent sound-absorbing properties due to the porous sheet and the sound-absorbing base provided on the back thereof.
The sound-absorbing interior material of the present invention is excellent in designability because joints can be eliminated by pasting together the porous sheets located on the outermost surface without gaps. In the sound absorbing interior material of the present invention, the through-holes provided in the porous sheet are inconspicuous and the design is excellent. By applying printing or embossing to the surface of the porous sheet, the design can be further improved. .

The perforated sheet can be prevented from tearing by fitting the sound absorbing base and the joiner flush or by filling putty so that the step at the boundary between the sound absorbing base and the fitting portion is small. In the present invention, since the sound-absorbing substrate is positioned on the back surface of the porous sheet and the porous sheet is hard to break, it is not necessary to reinforce the porous sheet with a glass cloth layer.
The sound-absorbing interior material of the present invention does not require a frame such as an aluminum frame, and is low in cost. In addition, the sound-absorbing interior material of the present invention can be processed on-site without any prior measurement, processing, etc., so that construction is easy and the construction period can be shortened.
A sound-absorbing interior material using a glass wool board or a rock wool board as a sound-absorbing base has excellent fire resistance.

1 is a partial cross-sectional view of a first embodiment of a sound absorbing interior material of the present invention; FIG. FIG. 4 is a partial cross-sectional view of a second embodiment of the sound absorbing interior material of the present invention; FIG. 4 is a partial cross-sectional view of a third embodiment of the sound absorbing interior material of the present invention;

The present invention comprises a backing material, a joiner fixed to the backing material and having a fitting part and an adhesive part, and a sound absorbing base fitted to the fitting part of the joiner and arranged along the backing material. , and a porous sheet having a large number of through-holes, which is attached to an adhesive portion of a joiner so as to cover the sound absorbing substrate.

FIG. 1 shows a partial cross-sectional view of the first embodiment of the sound absorbing interior material of the present invention.
The sound-absorbing interior material 1 of the first embodiment includes a base material 10, a joiner 11 having an H-shaped cross section fixed to the base material, a sound-absorbing base 12 fitted to a fitting portion 112 of the joiner, and bonding of the joiner. It has a porous sheet 13 attached to the portion 113 .

The base material 10 can be used as a base material for the walls and ceilings of buildings without any particular limitation to those used in the construction field. Specifically, plate-like materials such as gypsum board, calcium silicate board, cement board, wood wool cement board, aluminum sintered board, and metal plate, or frames such as light iron base and wood base. .

The joiner 11 is a joint material that is attached to the joint part of the board, and various shapes are used in the construction field. The joiner used in the sound absorbing interior material of the first embodiment has an H-shaped cross section, but the joiner used in the present invention is not limited to this. It is possible to use, without particular limitation, a shape having an adhesive part 113 that is exposed on the surface side and is used to bond the porous sheet together. A joiner that combines two or more members can also be used. It is preferable that the joiner has a claw for preventing the sound absorbing substrate from slipping or coming off at the fitting portion.

The sound absorbing base 12 is fitted to the fitting portion 112 of the joiner and installed so as to cover the base material 10 . As the sound absorbing substrate, any substrate having sound absorbing properties can be used without particular limitation. For example, use a combination of molded glass wool, rock wool, etc., foamed polyurethane resin, aluminum sintered board, wood wool cement board, gypsum board, cement board, etc. with holes and a back air layer. can be done. Concrete, glass fiber reinforced cement (GRC), autoclave-cured lightweight cellular concrete (ALC), iron plate, extruded cement plate, gypsum board, glass, etc., having recesses formed in the smooth surface of the material, Alternatively, a perforated plate made of a gypsum board or iron plate may be installed on the surface of these rigid materials. Among these, glass wool and rock wool are preferred because they are lightweight and have excellent fire resistance.

The porous sheet 13 is attached at least to the bonding portion 113 of the joiner with an adhesive (not shown) or the like. Sound absorbing substrates, which are fibers such as glass wool and rock wool, or foams such as foamed polyurethane, have a small adhesion area and are difficult to attach with an adhesive. Since it is affixed to the adhesion portion, it can be firmly adhered. The type of adhesive is not particularly limited, and pressure-sensitive adhesives, heat-sensitive adhesives, etc. used in the construction field can be used, and pressure-sensitive adhesives are preferably used because of their excellent handleability. can be done. In addition, it is preferable to use an adhesive that does not contain volatile organic compounds such as formaldehyde that cause sick house syndrome.

The porous sheet 13 has a large number of through holes 131 through which sound (air vibration energy) is transmitted to the sound absorbing substrate 12 located on the rear side. As the porous sheet, any resin material used in the construction field can be used without particular limitation. Specifically, vinyl chloride, polyethylene, polypropylene, polyester, nylon and the like can be used. The thickness of the porous sheet is usually about 0.1 mm or more and 3.0 mm or less. In the present invention, the porous sheet may have a reinforcing layer such as a glass cloth layer. However, the sound-absorbing interior material of the present invention preferably does not have a reinforcing layer because the porous sheet is supported by the sound-absorbing substrate positioned on the back surface thereof and is not easily broken.

The shape of the through-hole is not particularly limited, and may be a circle, an ellipse, a polygon, or the like. The diameter of the through-hole is preferably 0.5 mm or less. Here, when the shape of the through-hole is not circular, the diameter of the through-hole means the maximum diameter. If the diameter of the through-holes is larger than 0.5 mm, the through-holes formed on the surface of the porous sheet are conspicuous, degrading the design, and furthermore, the strength of the porous sheet is degraded, making it easier to break. The diameter of the through-hole is preferably 0.02 mm or more. A through-hole having a diameter smaller than 0.02 mm is difficult to process, resulting in high cost. The through holes may have the same diameter or may have different diameters.

The through-holes need only be provided on the entire surface of the porous sheet, and can be provided in a regular or random pattern. The open area ratio, which is the ratio of the total area of through-holes to the total area of the porous sheet, is preferably 5.0% or less. If the opening area ratio is more than 5%, the through holes become conspicuous, degrading the design, and the strength of the porous sheet is degraded, making it easy to break. The opening area ratio is preferably 4.0% or less, more preferably 3.0% or less.
The number density of through-holes is usually in the range of 1 to 10000/cm ² , although it is affected by the opening area ratio and the diameter of the through-holes.

In the sound absorbing interior material of the present invention, the porous sheet is positioned on the outermost side. Therefore, it is preferable to print, emboss, or the like on one surface of the porous sheet, which is the outermost surface of the sound-absorbing interior material, to enhance the design. By applying printing, embossing, or the like, the through-holes formed in the porous sheet can be made more inconspicuous. Processing such as printing and embossing can be performed either before or after punching holes in the porous sheet, but if processing such as printing or embossing is applied after punching, the through holes may be crushed or filled. Therefore, it is preferable to apply it before drilling.

The method for forming through-holes penetrating the porous sheet is not limited, and for example, perforation processing can be performed using a laser, a needle, a drill, or the like. Among these, laser drilling is preferable because the position, size and number of through holes can be easily adjusted.

Second and third embodiments of the sound absorbing interior material of the present invention are shown in FIGS. 2 and 3, respectively. In addition, in the second and third embodiments, the same reference numerals are given to the same members as in the first embodiment.
In the sound-absorbing interior material 2 of the second embodiment, the sound-absorbing base 22 has recesses 221 at the ends thereof, and the sound-absorbing base and the joiner are flush with each other by fitting the recesses 221 into the fitting portions 112 of the joiners. can be mated. In the sound-absorbing interior material 2 of the second embodiment, the sound-absorbing base and the joiner are flush with each other, so the porous sheet is hard to break.

The sound-absorbing interior material 3 of the third embodiment has a putty 34 at the boundary between the sound-absorbing base and the fitting portion. . In the sound-absorbing interior material of the third embodiment, since the step at the boundary between the sound-absorbing base and the fitting portion is filled and smoothly inclined, it is possible to prevent tearing of the porous sheet originating from the step. can.

The sound-absorbing interior material of the present invention is produced by fixing the joiner 11 to the base material 10 at the construction site, fitting the sound-absorbing base 12 into the fitting portion 112 of the joiner, applying the putty 34 as necessary, and then applying the porous material. It can be applied by adhering the sheet 13 to the joint 113 of the joiner. At this time, the edges of the porous sheet are adhered so as to be on the adhesion portion 113, and the adjacent porous films are adhered so that no gaps or steps are formed, thereby providing an interior with excellent design without joints. can be done.

1 Sound-absorbing interior material 10 of the first embodiment Base material 11 Joiner 112 Fitting part 113 Bonding part 12 Sound-absorbing base 13 Porous sheet 131 Through hole

2 Sound-absorbing interior material 22 of the second embodiment Sound-absorbing base 221 Concave part

3 Sound-absorbing interior material 34 Putty that is the third embodiment

Claims (3)

a substrate;
a joiner that is fixed to the base material and has a fitting portion and an adhesive portion;
a sound absorbing substrate that is a glass wool board or a rock wool board that is fitted to the fitting portion and arranged along the base material;
a porous sheet having a large number of through-holes, which is attached to the adhesive part so as to cover the sound absorbing substrate;
A sound absorbing interior material characterized by having the sound-absorbing substrate has recesses at the ends,
2. The sound absorbing interior material according to claim 1 , wherein the sound absorbing substrate and the joiner are fitted flush with each other. 2. The sound absorbing interior material according to claim 1 , wherein a putty is provided at a boundary between the sound absorbing substrate and the fitting portion, and the boundary is smoothly inclined.

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