JP6029943B2 - Interior panel - Google Patents

Description

  The present invention relates to an interior panel which is attached to a wall surface of a room and can improve the room to a comfortable environment by actions such as humidity control, odor / VOC adsorption removal, and sound absorption of living sound.

  The indoor environment required for homes and offices includes (1) moderate humidity, reduced summer sensation, over-drying and dew condensation in winter, and (2) unpleasant odors in daily life (for example, Cigarette odor, pet odor, garbage odor, toilet odor), etc., (3) low VOC (volatile organic compounds) such as formaldehyde, which is the cause of sick house syndrome, (4) generated indoors, There are few influences of various living sounds (for example, sound of TV, sound generated by cooking, washing, cleaning, etc., talking voice) that can be stressed even unconsciously.

  Conventionally, some interior materials have been proposed for the purpose of adsorbing and removing indoor odors and VOCs and humidity control. For example, Patent Document 1 discloses an interior material that is composed of zeolite crystal and volcanic glass, and has functions such as odor / VOC adsorption and humidity control, as an interior material that constitutes an indoor wall surface or ceiling surface. ing. In addition, as an interior material having the same application, an interior material (“Eco Carat” manufactured by INAX Co., Ltd.) having an odor / VOC adsorption function and a humidity control function made of a porous ceramic body is also known.

JP 2001-58318 A

  However, the above-mentioned conventional interior materials are limited in the types of odor that can be adsorbed and removed (for example, sweat odor, body odor, etc. can be adsorbed, but garbage odor, tobacco odor, etc. are specified in the odor. Humidity control performance is not sufficient. In addition, there is almost no function to reduce the influence of living sounds generated indoors. Therefore, it does not sufficiently satisfy all the requirements (1) to (4), and it is difficult to optimize the indoor environment. Moreover, these conventional interior materials constitute indoor wall surfaces and ceiling surfaces, and large-scale renovation is required to install them in existing houses and offices.

  Therefore, the object of the present invention is to solve the problems of the prior art as described above, and has excellent performance in indoor humidity control, odor / VOC adsorption removal, sound absorption of living sounds, etc., air, humidity, sound, etc. It is an object of the present invention to provide an interior panel that can realize a comfortable indoor environment and can be easily applied to an indoor wall surface.

  As a result of repeated studies to solve the above-mentioned problems, the inventors have obtained a mat-like short fiber assembly made of specific fibers on a substrate made of natural wood, and a nonwoven fabric containing charcoal powder or activated carbon powder. By stacking paper sheets to form a single panel and attaching this panel to the wall surface of the room, etc., it has excellent effects on humidity control, odor / VOC adsorption removal, and sound absorption of living sounds. It was found that can be obtained. Further, such a panel can be formed into an arbitrary shape such as a square or a circle, and can be attached to an arbitrary position such as a wall surface in an arbitrary layout, so that it can be installed also as an indoor interior.

The present invention has been made on the basis of such findings and has the following gist.
[1] On a substrate made of natural wood (1), in order from the lower layer side, a mat-like short fiber aggregate (2), a non-woven fabric or paper sheet containing charcoal powder or / and activated carbon powder (3), An interior panel in which a plate-like breathable cover material (4) is laminated,
Short fiber aggregate (2) is a mixture of wool and hollow polyester fibers, which are matrix fibers, and heat-adhesive fibers, heat-adhesive fibers are melted by heat treatment, and the fiber contacts of the matrix fibers are bonded by the melt. An interior panel characterized by being obtained by processing.
[2] The interior panel according to [1], wherein the thickness of the short fiber aggregate (2) is 5 to 45 mm.

[3] In the interior panel according to [1] or [2], the breathable cover material (4) includes a mat-like short fiber aggregate having a density of 0.02 g / cm ³ or more, a plate material made of natural wood, An interior panel comprising at least one selected from a cardboard material, a metal plate having air holes formed on the entire surface, and a porous ceramic plate.
[4] The interior panel according to any one of [1] to [3] above, includes a frame (6), and is provided on the back side of the frame (6) along the inner edge of the frame. A portion (60) is formed, and the substrate (1) is fitted into the step portion (60), and the short fiber assembly (2) and the sheet are formed on the substrate (1) facing the inside of the frame (6). An interior panel wherein (3) is laminated, and a breathable cover material (4) is superimposed on the sheet (3) and the outer frame (6).
[5] The interior panel according to any one of [1] to [4], wherein the breathable cover material (4) is covered with a cloth cover (5).

The interior panel of the present invention has excellent performance in indoor humidity conditioning, odor / VOC adsorption removal, sound absorption of living sounds, etc., and also has a relaxation effect due to the scent of wood from some natural wood used With these, it is possible to realize a comfortable indoor space in terms of air, humidity and sound. In other words, this interior panel can exert various functions by directly touching indoor air, and can comprehensively improve the indoor environment in terms of air, humidity, and sound.
In addition, the interior panel of the present invention can be easily attached to an indoor wall surface by an amateur without performing a large-scale reform. Furthermore, the interior panel can be configured in an arbitrary shape such as a rectangle or a circle, and can be attached to an arbitrary position on the wall surface in an arbitrary layout, so that it can be installed also as an interior interior. . Moreover, it can be manufactured at a relatively low cost and does not require a power source such as electricity for use.

The front view which shows one Embodiment of the panel for interiors of this invention Rear view of the interior panel in FIG. Sectional view in the thickness direction of the interior panel of FIG. Sectional drawing in the panel thickness direction which shows other embodiment of the panel for interiors of this invention The graph which shows the result of having installed the interior panel of embodiment shown in FIGS. 1-3 in a room | chamber interior, and having investigated indoor humidity, outdoor humidity, and temperature over about 50 days. A graph summarizing the deodorizing effect of the interior panel of the present invention based on the deodorizing performance of the short fiber aggregate and the charcoal powder-containing sheet of the interior panel of the present invention A graph summarizing the deodorizing effect of the interior panel of the present invention based on the deodorizing performance of the short fiber aggregate and the charcoal powder-containing sheet of the interior panel of the present invention A graph summarizing the deodorizing effect of the interior panel of the present invention based on the deodorizing performance of the short fiber aggregate and the charcoal powder-containing sheet of the interior panel of the present invention A graph summarizing the deodorizing effect of the interior panel of the present invention based on the deodorizing performance of the short fiber aggregate and the charcoal powder-containing sheet of the interior panel of the present invention The graph which shows transition of formaldehyde air concentration in a test container in a formaldehyde adsorption test carried out about a short fiber aggregate with which an interior panel of the present invention is provided The graph which shows the transition of the formaldehyde reduction rate in a test container in the formaldehyde adsorption test implemented about the short fiber assembly with which the panel for interiors of the present invention is provided The graph which shows the sound absorption rate in each frequency range in the sound absorption test implemented about the short fiber assembly with which the panel for interiors of this invention is equipped.

1 to 3 show an embodiment of an interior panel according to the present invention. FIG. 1 is a front view, FIG. 2 is a rear view, and FIG. 3 is a cross-sectional view in the panel thickness direction.
This interior panel contains a mat-like short fiber aggregate 2, charcoal powder and / or activated carbon powder (hereinafter referred to as “charcoal powder” for convenience of description) on a substrate 1 made of natural wood in order from the lower layer side. A non-woven fabric or paper sheet 3 (hereinafter referred to as “charcoal powder-containing sheet 3” for convenience of explanation) and a plate-like breathable cover material 4 are laminated, and this breathable cover material 4 serves as a cloth cover 5. Covered with.

In the present embodiment, the interior panel includes a frame body 6, and the substrate 1, the short fiber aggregate 2, the sheet 3, and the breathable cover material 4 are held on the frame body 6.
The frame 6 is composed of a square or rectangular wooden frame. On the back side of the frame body 6, a step portion 60 is formed along the inner edge of the frame body. The substrate 1 is fitted into the step portion 60, and the back surface of the frame body 6 and the back surface of the substrate 1 are substantially flush with each other. It has become. And the short fiber aggregate 2 and the charcoal powder containing sheet | seat 3 are laminated | stacked in order on the board | substrate 1 which faced the inner side (inner side of the frame) of the frame body 6, Furthermore, this charcoal powder containing sheet | seat 3 and its outer frame body An air-permeable cover material 4 is stacked on 6. The breathable cover material 4 may be fixed to the frame body 6 with an adhesive or a nail, or may be held on the frame body 6 by being covered with a cloth cover 5 described below.
The breathable cover material 4 is covered with a cloth cover 5, and the edge of the cloth cover 5 is folded back to the back side of the frame body 6 and fixed to the frame body 6 with an adhesive or the like.

  The substrate 1 is made of a natural solid material. There are no particular restrictions on the type of natural wood that constitutes the substrate 1, but coniferous materials such as cedar, cypress, and hiba are preferred from the standpoint of moisture conditioning and light weight of the wood, and are soft and processed. Cedar is particularly preferred because it is easy to handle and is relatively inexpensive. If the thickness of the substrate 1 is too thin, functions such as a humidity control function cannot be sufficiently exhibited, and rigidity for holding the short fiber aggregate 2 and the like is insufficient. On the other hand, if the plate thickness is too thick, the weight of the panel increases, which hinders installation on the wall. For this reason, the thickness of the substrate 1 is preferably about 4 to 10 mm, and more preferably about 6 to 8 mm.

The short fiber assembly 2 is a mixture of wool and hollow polyester fibers, which are matrix fibers, and heat-adhesive fibers, melts the heat-adhesive fibers by heat treatment, and bonds the fiber contacts of the matrix fibers by the melt. It was obtained.
In this short fiber aggregate 2, the matrix fibers are composed of wool and hollow polyester fibers, among which the hollow polyester fibers have an action of moving moisture from the higher to the lower, and the wool absorbs and releases moisture. Because it has the effect of adjusting humidity, it has high humidity control performance. In addition, the short fiber assembly 2 has a high adsorption performance capable of adsorbing odors and VOCs, and the adsorbed odorous component (molecule) is decomposed by wool, so that the adsorption performance is highly durable. is there. Furthermore, since the short fiber assembly 2 has a vibration damping action, it has a high sound absorption performance for sound generated indoors.

  In order to obtain such performance particularly effectively, it is preferable to optimize the ratio of wool to hollow polyester fiber, specifically, the mass ratio (x) of wool (x) to hollow polyester fiber (y). / (Y) is preferably about 90/10 to 10/90, and more preferably about 85/15 to 40/60. Moreover, the mass ratio (a) / (b) of the matrix fiber (a) (wool and hollow polyester fiber) used as the raw material of the short fiber assembly 2 and the heat-adhesive fiber (b) is 90 / 10-60 / 40. The degree is preferable, and about 85/15 to 70/30 is more preferable. In general, the fiber length of wool and hollow polyester fiber is suitably about 40 to 210 mm.

Usually, in the short fiber aggregate 2, the short fiber aggregate having a predetermined density (for example, about 0.008 to 0.05 g / cm ³ ) is constrained in an appropriate compressed state (that is, the frame body 6, the substrate 1 and the short fiber aggregate 2). It is comprised by being enclosed by the air permeable cover material 4). If the density of the short fiber assembly 2 is too low, the humidity control performance and the sound absorption performance are deteriorated. On the other hand, if the density is too high, the restoring force becomes strong and the shape of the panel tends to be unstable. On the other hand, if the thickness is too thin, sufficient functions cannot be achieved. On the other hand, if the thickness is too thick, the weight of the panel increases, which hinders the interior panel from being attached to the wall. For this reason, the short fiber aggregate 2 preferably has a density (same as “bulk density”) of about 0.012 to 0.10 g / cm ³ and a thickness of about 5 to 45 mm. Moreover, the thing whose density is about 0.018-0.04 g / cm < ³ > and thickness is about 20-25 mm is more preferable.
This short fiber assembly 2 can be manufactured by blending wool, hollow polyester fiber and heat-bonding fiber, performing carding, laminating with a cross-layer machine, and then applying heat treatment to stabilize the shape. it can.

The charcoal powder-containing sheet 3 may be anything as long as the charcoal powder (fine powder) is held on the entire nonwoven fabric or paper sheet. For example, the non-woven fabric is impregnated with charcoal powder by dipping. There is a non-woven fabric or a paper surface coated with carbon powder using a resin as a binder, a non-woven fabric or paper sandwiched with carbon powder, a non-woven fabric composed of fibers kneaded with carbon powder, etc. Any form may be sufficient.
Generally, the nonwoven fabric used consists of synthetic fibers, such as polyester, nylon, and rayon, and has a thickness of about 0.1 to 1.5 mm.
Moreover, the particle size of the used charcoal powder (charcoal powder or / and activated carbon powder) is 100 μm or less, and the adhering amount of the charcoal powder is suitably about 10 to 300 g / m ² .

The breathable cover material 4 may be composed of any member as long as it has breathability. The breathable cover material 4 has a function of holding the short fiber assembly 2 and the sheet 3 and the front surface of the panel. Therefore, for example, (i) a mat-like material having a density of 0.02 g / cm ³ or more (preferably 0.06 g / cm ³ or more) is necessary. Among short fiber aggregates, (ii) natural wood plates, (iii) cardboard materials, (iv) metal plates with vents (small holes) formed on the entire surface, (v) porous ceramic plates, etc. It is preferable to use one or more selected from

The breathable cover material 4 of this embodiment is composed of a mat-like short fiber assembly having a density of 0.02 g / cm ³ or more (preferably 0.06 g / cm ³ or more). The short fiber assembly constituting the breathable cover material 4 is, for example, a mixture of wool and hollow polyester fibers, which are matrix fibers, and thermal adhesive fibers, and the thermal adhesive fibers are melted by heat treatment, and the melt Is obtained by adhering the fiber contacts of the matrix fibers. In order to increase the density of the matrix fibers of this short fiber aggregate, the mass ratio (x ′) / (y ′) of wool (x ′) to hollow polyester fibers (y ′) is about 0/100 to 40/60. Is preferable, and about 10/90 to 30/70 is more preferable.
The thickness of the short fiber aggregate (breathable cover material 4) is preferably about 3 to 15 mm, and more preferably about 5 to 10 mm.

Further, the mass ratio (a ′) / (b ′) of the matrix fiber (wool and hollow polyester fiber) which is the raw material of the short fiber aggregate and the heat-adhesive fiber is preferably about 20/80 to 80/20, / 60 to 60/40 is more preferable. In general, the fiber length of wool and hollow polyester fiber is suitably about 40 to 210 mm.
Since the short fiber aggregate constituting the breathable cover member 4 has sound absorbing performance, it has an effect of improving the sound absorbing performance of the entire panel.
The cloth cover 5 may be selected in consideration of the design as the interior of the panel.

FIG. 4 shows another embodiment of the interior panel of the present invention, and is a cross-sectional view in the panel thickness direction.
In this embodiment, the breathable cover material 4 is made of a plate material (natural solid material) made of natural wood. There are no particular restrictions on the type of natural wood that constitutes this breathable cover material 4, but coniferous materials such as cedar, cypress, and hiba are preferred from the standpoint of moisture conditioning and light weight of the wood, Cedar is particularly preferable because it is soft, easy to process, and relatively inexpensive. If the plate thickness is too thin, the rigidity required as a presser is not sufficient. On the other hand, if the plate thickness is too thick, the weight of the panel increases, which hinders attachment to the wall. For this reason, the plate thickness of the plate material is preferably about 3 to 10 mm, and more preferably about 4 to 6 mm.

Further, in this embodiment, in order to make use of the appearance of natural wood constituting the breathable cover material 4, the cloth cover 5 as in the embodiment of FIGS. 1 to 3 is not provided, and the breathable cover material 4 is used as an adhesive or the like. It is fixed to the frame 6 with. For this reason, the air-permeable cover material 4 constitutes the front surface of the panel.
Since other configurations are the same as those in the embodiment of FIGS. 1 to 3, the same reference numerals are given, and detailed descriptions thereof are omitted.

The interior panel of the present invention is affixed to the wall surface w of the room with a double-sided adhesive tape 7 as shown in FIG. 3 or FIG. 4, or affixed with a hidden nail (finish nail) or the like. Therefore, it can be easily constructed. The installation location and the number of installations are also arbitrary, and the installation location and the number of installations may be selected according to the size and shape of the room. As a guide for the number of installations, it is appropriate that the total area of the interior panels to be installed is 1/5 to 1/3 of the floor area of the room.
Moreover, the design property as interior interior can be improved by combining the panel of two embodiment mentioned above, or combining the panel of a different cloth cover 5. FIG.

Hereinafter, various performances of the interior panel of the present invention will be described.
・ Humidity control performance Humidity is deeply related to indoor comfort. Although the humidity varies depending on the weather not only in the season but also in the day, it is preferable that the humidity in the room is kept at a certain moderate level. The interior panel of the present invention has a unique and excellent humidity control performance by combining the substrate 1 (natural wood) and the short fiber assembly 2. That is, the short fiber aggregate 2 in which the matrix fibers are made of wool and hollow polyester fibers has an excellent humidity adjusting function as described above, and the natural wood (solid wood) constituting the substrate 1 is also the same. It itself has the property of absorbing and releasing humidity. For this reason, moisture is absorbed when the panel is high, and moisture is released when the panel is low, so that the indoor humidity is automatically maintained at an appropriate level and condensation is also suppressed.

FIG. 5 shows a result of examining the indoor humidity, the outdoor humidity, and the air temperature for about 50 days when the interior panel of the embodiment shown in FIGS. 1 to 3 is installed indoors. The room used for the test was one room (floor area 11.9m ² ) of the second floor part of a wooden, mortar, and iron plate wall housing building. Eighteen sheets were installed (total panel area: 2.88 m ² ). The temperature and humidity shown in FIG. 5 are measured at 6 am every morning. As shown in FIG. 5, the outdoor humidity changes in the range of about 45 to 75%, whereas the indoor humidity in which the interior panel of the present invention is installed is in the range of about 50 to 60%. It can be seen that it is maintained.

-Odor adsorption removal performance To make the room comfortable, it is preferable to create a refreshing air environment with less unpleasant odor caused by life. The interior panel of the present invention has excellent odor (living odor) adsorption removal performance by combining the short fiber aggregate 2 and the carbon powder-containing sheet 3.
Living odors include, for example, garbage odor, tobacco odor, excretion odor, body odor, sweat odor, and the like, but the odor components contained therein are different. For example, the main odor components contained in garbage odor are hydrogen sulfide, methyl mercaptan, trimethylamine, and ammonia, and the main odor components contained in tobacco odor are ammonia, acetic acid, acetaldehyde, pyridine, and hydrogen sulfide. The main odor components contained in are ammonia, acetic acid, methyl mercaptan, hydrogen sulfide, and indole, and the main odor components contained in body odor and sweat odor are ammonia, acetic acid, isovaleric acid, and nonenal.

  Here, the charcoal powder and activated carbon powder contained in the charcoal powder-containing sheet 3 are known to have an excellent deodorizing effect, but odor components that can be adsorbed and removed include hydrogen sulfide, methyl mercaptan, trimethylamine, and the like. Limited. On the other hand, when the present inventor investigated the deodorizing performance of the short fiber assembly 2, the odor component that can be adsorbed and removed by charcoal powder or activated charcoal powder does not provide a very high deodorizing effect, but the other main components It was found that the odor component (ammonia, acetic acid, isovaleric acid, indole) exhibited very high adsorption performance. That is, it was found that by using a panel structure having both the short fiber aggregate 2 and the charcoal powder-containing sheet 3, the deodorizing performance of these components complement each other so that the main odor components can be effectively adsorbed and removed.

Table 1 shows a short fiber aggregate (wool (x) to hollow polyester fiber (y) mass ratio (x) / (y) 60/40, density 0.016 g / w) used for the interior panel of the present invention. The short fiber aggregate of cm ³ , provided that the short fiber aggregate constitutes the short fiber aggregate 2 in an appropriately compressed state in the interior panel of the present invention, and the density thereof is approximately 0.024-0. 032 g / cm ³ )) is the result of the deodorization test.

The instrumental analysis was performed by a detector tube method for ammonia, acetic acid, hydrogen sulfide, pyridine, methyl mercaptan, acetaldehyde, and trimethylamine, and by gas chromatography for isovaleric acid, nonenal, and indole, respectively.
The test method is in accordance with “(F) Fiber Evaluation Technology Council, Instrument Analysis Implementation Manual (Detector Tube Method, Gas Chromatography Method)”. Initial gas concentrations are: ammonia: 100 ppm, acetic acid: 50 ppm, hydrogen sulfide: 4 ppm, pyridine: 12 ppm , Methyl mercaptan: 8 ppm, acetaldehyde: 14 ppm, trimethylamine: 28 ppm, isovaleric acid: about 38 ppm, nonenal: about 14 ppm, indole: about 33 ppm, measurement time is 2 hours, sample size is 2.4 g for detector tube method, gas The chromatographic method was 1.2 g.

  According to Table 1, while the reduction rate is small for hydrogen sulfide, methyl mercaptan, trimethylamine, and acetaldehyde, high reduction rates due to adsorption are obtained for ammonia, acetic acid, isovaleric acid, and indole.

  FIG. 6 shows a summary of the deodorizing effect of the interior panel of the present invention having both of them based on the deodorizing performance of the short fiber assembly 2 and the carbon powder-containing sheet 3 described above. According to this, the interior panel of the present invention has the main odor components (ammonia, acetic acid, hydrogen sulfide, It can be seen that methyl mercaptan, trimethylamine, isovaleric acid, indole) can be effectively adsorbed and removed.

・ VOC adsorption removal performance Due to high airtightness of buildings and changes in ventilation conditions, VOCs (volatile organic compounds) such as formaldehyde emitted from building materials, furniture, adhesives, paints, etc. in homes and schools are in poor health. The causing sick house syndrome is a social problem. On the other hand, the interior panel of the present invention has an excellent VOC adsorption / removal performance particularly by the short fiber aggregate 2 (and the composite with the carbon powder-containing sheet 3).
Short fiber aggregates used in the interior panel of the present invention (short of a mass ratio (x) / (y) of wool (x) to hollow polyester fiber (y) of 60/40 and a density of 0.012 g / cm ³ ) However, this short fiber aggregate constitutes the short fiber aggregate 2 in an appropriately compressed state in the interior panel of the present invention, and its density is approximately 0.018 to 0.024 g / cm ^3. The formaldehyde adsorption test was carried out as follows.

(A) Test method 1 g of a sample (short fiber aggregate) was suspended in a flask (total volume: 360 ml) so as not to touch the wall of the flask, and then sealed with a silicon stopper. Into this flask, 40 μL of a formaldehyde solution was poured while being careful not to touch the sample, and formaldehyde was quickly vaporized. A plurality of flask containers in which gaseous formaldehyde is made uniform by the above method are prepared and left in a thermostatic chamber (25 ° C.), and then taken out from the thermostatic chamber at regular intervals (3 minutes, 1 hour, 3 hours, 5 hours), The formaldehyde in the flask was quantified.
As a control test (blank), a plurality of flasks without a sample were prepared and similarly removed from the thermostat at regular intervals (1 hour, 3 hours, 5 hours), and formaldehyde in the flask was quantified.
The initial concentration was determined by quantifying a plurality (three) of formaldehyde in the flask immediately after it was created in the above control test (0 hour) and confirming that there was no variation, and then using the average value.

(B) Determination of formaldehyde Formaldehyde was collected in a collection tube (Sep-PaK DNPH; manufactured by Waters) by collecting air (50 mL) inside the flask from a gas sampling port attached to a silcon stopper. The collected formaldehyde was eluted with acetonitrile and quantified by high performance liquid chromatography (HPLC). (Compliant quantification method: Actual measurement of harmful air pollutants (supervised by the Environmental Protection Agency, Air Quality Control Bureau, published by Japan Environmental Health Center) Chapter 2 Sections 2 to 4)

(C) Reduction rate and adsorption amount of formaldehyde The reduction rate (%) of formaldehyde was a value obtained by dividing [concentration: C _n ] by initial concentration [C ₀ ] as a result of quantification after standing for a certain period of time.
Reduction rate (%) = (C _n / C ₀ ) × 100
The formaldehyde adsorption amount (μg / g) is a value obtained by dividing the difference between the initial abundance [W ₀ ] and the residual amount [W _n ] after standing for a certain time by the weight [w] of the sample subjected to the test, The amount of formaldehyde adsorbed per unit weight of the sample.
Adsorption amount (μg / g) = [(C ₀ × V) − (C _n × V)] / w
= (W ₀ -W _n ) / w
Here, initial abundance [W ₀ ]: value obtained by multiplying initial concentration [C ₀ (mg / m ³ )] by flask internal volume (V = 0.36 L) (unit: μg)
Residual amount [W _n ]: Value (unit: μg) obtained by multiplying the concentration [C _n (mg / m ³ )] determined after standing for a certain period of time by the volume in the flask (V = 0.36 L)

The test results are shown in Table 2 and FIGS. Here, “sample” is the result of the test using the sample, and “blank” is the result of the control test.
According to these, it can be seen that the short fiber aggregate used in the present invention has excellent VOC adsorption removal performance. Therefore, the interior panel of the present invention has an excellent VOC adsorption / removal performance due to the short fiber assembly 2 (and the composite with the carbon powder-containing sheet 3).

・ Sound absorption performance In buildings, various life sounds (for example, sound from TV, sound from cooking / washing / cleaning, talking voice, etc.) are generated. Then, it feels noisy and unconsciously stresses and puts a burden on the body. On the other hand, the interior panel of the present invention has an excellent sound absorbing performance due to the short fiber assembly 2 in particular.

Table 3 and FIG. 9 show that the short fiber assembly (wool (x) and hollow polyester fiber (y) mass ratio (x) / (y) is 60/40 and the density is 0) used in the interior panel of the present invention. A short fiber aggregate of .016 g / cm ³ , provided that the short fiber aggregate constitutes the short fiber aggregate 2 in an appropriately compressed state in the interior panel of the present invention, and its density is approximately 0.024. About 0.032 g / cm ³ ), the results of the sound absorption test performed by the reverberation chamber method are shown. The area of the test body (short fiber aggregate) was 13.3 m ² , and the temperature and humidity in the reverberation chamber were 19 ° C. and 38% RH in both cases with and without the test body. The change in temperature and humidity during measurement with and without the test specimen was within the allowable range, and the temperature and humidity correction of the sound absorption rate was not performed. In addition, as a test body, what stretched the short fiber aggregate was used.

According to Table 3 and FIG. 9, it turns out that the short fiber assembly 2 used for the panel for interiors of this invention can absorb a reverberation sound effectively. Therefore, the interior panel of the present invention has an excellent sound absorbing performance, and can realize a quiet indoor environment with less reverberant sound generated in daily life.
Moreover, the sound absorption performance of the interior panel can be further enhanced by using a relatively high-density short fiber assembly for the breathable cover member 4 as in the embodiment of FIGS.

  As described above, the interior panel according to the present invention has excellent performance in indoor humidity control, odor / VOC adsorption removal, sound absorption of living sounds, etc., and those performances by directly touching indoor air. In addition, a relaxation effect is also obtained by the scent of the natural wood that constitutes the substrate 1, thereby realizing a comfortable indoor space in terms of air, humidity, sound, and the like. Further, the interior panel of the present invention can be easily attached to an indoor wall surface by an amateur. Furthermore, the interior panel can be configured in an arbitrary shape such as a rectangle or a circle, and can be attached to an arbitrary position on the wall surface in an arbitrary layout, so that it can be installed also as an interior interior. .

1 substrate 2 short fiber aggregate 3 sheet (sheet containing carbon powder)
4 Breathable cover material 5 Cloth cover 6 Frame 7 Double-sided adhesive tape 60 Step

Claims (5)

On a substrate (1) made of natural wood, in order from the lower layer side, a mat-like short fiber aggregate (2), a nonwoven fabric or paper sheet (3) containing charcoal powder or / and activated carbon powder, a plate-like An interior panel in which a breathable cover material (4) is laminated,
Short fiber aggregate (2) is a mixture of wool and hollow polyester fibers, which are matrix fibers, and heat-adhesive fibers, heat-adhesive fibers are melted by heat treatment, and the fiber contacts of the matrix fibers are bonded by the melt. An interior panel characterized by being obtained by processing.   The interior panel according to claim 1, wherein the short fiber aggregate (2) has a thickness of 5 to 45 mm. The breathable cover material (4) is composed of a mat-like short fiber aggregate having a density of 0.02 g / cm ³ or more, a plate made of natural wood, a cardboard material, a metal plate having vent holes formed on the entire surface, a porous plate The interior panel according to claim 1 or 2, comprising at least one selected from ceramic plates.   A frame (6) is provided, and on the back side of the frame (6), a step (60) is formed along the inner edge of the frame, and the substrate (1) is formed on the step (60). The short fiber assembly (2) and the sheet (3) are laminated on the substrate (1) facing the inside of the frame (6), and the sheet (3) and the outer frame (6). The interior panel according to any one of claims 1 to 3, wherein a breathable cover material (4) is stacked on top.   The interior panel according to any one of claims 1 to 4, wherein the breathable cover material (4) is covered with a cloth cover (5).

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