JP3114920B2 - Sound absorbing interior materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sound absorbing interior material for absorbing indoor noise.

[0002]

2. Description of the Related Art In recent years, in particular, automobiles have been demanded to be large-sized and high-grade, and the skin material used for the interior materials has not only the strength, durability and abrasion resistance, but also luxury and good appearance. It is required to prepare. As a result of pursuing these matters, the above-mentioned skin material has become thicker and has a higher density. This interior material has the property of a sound absorbing interior material that absorbs noise that has entered the room.

Conventionally, as a sound-absorbing interior material used as a constituent member such as an automobile seat, a ceiling surface, a wall surface, or the like in a room, or furniture, as shown in FIG.
A sound-absorbing interior material 9 comprising a moquette skin 90 covering the porous body 101 is used. In the sound-absorbing interior material 9, the inner porous body 101 has cushioning and sound-absorbing properties, while the moquette skin 90 has the role of surface decoration, appearance, touch, and the like.

[0004] As shown in FIG. 8, the moquette skin 90 constitutes a greige machine 15 by weaving pile yarns 11 into a base fabric 16 comprising warps 18 and wefts 19. A thick layered resin backing material 92 is provided on the back surface 161 of the greige machine 15 to prevent the pile yarn 11 from coming off.

[0005] The resin backing material 92 is
The resin layer formed on the pile yarn 61 has a thick film as shown in FIG.
1 and the base cloth 16 are firmly joined. As shown in FIG. 9, the resin layer is pressed to prevent the pile yarn 11 from coming off, and the resin backing material 92 is inserted into the warp 18, the weft 19, and the pile base 1 so as to reach the pile base.
10 and between the warp 18 and the weft 19 (the hatched portion 920 in the figure), and they are bonded. For this reason, the resin layer tends to be thick.

[0006]

The surface of the sound absorbing interior material 9 is covered by the moquette skin 90 having a thick resin backing material 92.
As will be described later, the sound absorption characteristics of the moquette skin 90
Greatly depends on That is, as shown in FIG. 10, the sound absorbing characteristics (solid line b) of the sound absorbing interior material 9 provided with the moquette skin 90 on the surface are the same as those of the sound absorbing interior material consisting of the porous body 101 only (dashed line a). In comparison, it is significantly inferior particularly in the high frequency range.

As shown in FIGS. 8 and 9, a resin backing material 92 formed in a layer on the back surface of the moquette skin 90 reflects sound propagated from outside, and the sound is transmitted to the interior of the sound absorbing interior material 9. This is because it is difficult to reach the porous body 101 having excellent sound absorption existing inside. In addition, FIG. 10 shows that each sound absorbing interior material is based on the normal incidence method (１ ／ octave band frequency) specified in JIS-A-1405 “Method of measuring normal incidence sound absorption coefficient of building materials by pipe method”. It is the measured normal incidence sound absorption coefficient.

Of course, if the surface of the sound absorbing interior material is covered with a material having good air permeability such as knit, for example, the above problem of sound absorbing property hardly occurs. However, since the above-mentioned sound-absorbing interior material is often provided in a portion that is always exposed to the human eye, design and appearance are particularly important in luxury when used in automobiles.

When the above-mentioned sound-absorbing interior material is used, for example, as a constituent member of furniture or the like and is arranged in a portion that can be reached by humans, it is also important that its surface is excellent in feel and the like. In this regard, the moquette skin is an excellent material having luxury not found in knits and woven fabrics. Therefore, there is a need for the development of a sound absorbing interior material that uses a moquette skin and has excellent sound absorbing properties.

The present invention has been made in view of the above problems, and has as its object to provide a sound absorbing interior material having a high sound absorbing property using a moquette skin having a resin backing material on the back surface.

[0011]

The present invention relates to a sound-absorbing interior material comprising a porous body and a moquette skin covering the porous body, wherein the moquette skin comprises a base fabric comprising a warp and a weft and a pile yarn. The greige is constructed by weaving, and the back of the greige is impregnated with a resin backing material. Further, the moquette skin is JIS-L-1096.
The air permeability according to the standard (Method A) is 5 to 60 cm ³ / cm ^2.
Seconds, the sound absorbing interior material.

The operation of the present invention will be described. In the sound-absorbing interior material of the present invention, by applying the foamed resin backing material to the back surface of the greige machine, the resin permeates between the pile base and the base cloth, and unnecessary portions (voids) are not applied. For this reason, a thick and layered resin backing material is not provided on the back surface of the greige as in the related art. For this reason, the air permeability from the front surface to the back surface of the moquette skin is good.

The moquette skin of the present invention is made of JIS-
Air permeability according to L-1096 standard (Method A) is 5 to 60 cm
Moquette skin with excellent air permeability of ³ / cm ² · sec. For this reason, the sound propagated from the outside can easily penetrate the moquette skin, and can easily reach the porous body present inside the sound absorbing interior material. On the other hand, since the porous body is originally a material having high sound absorbing properties, sound is efficiently absorbed by the porous body. In addition, since the pile yarn gives a luxurious feel to the moquette skin, it is possible to provide the present invention with an optimal appearance as an interior material.

If the air permeability is less than 5 cm ³ / cm ² · second, it becomes difficult for the sound to pass through the moquette skin, so that the sound absorbing property of the sound absorbing interior material may be deteriorated. Further, when the air permeability exceeds 60 cm ³ / cm ² · second, there is a possibility that a problem that the moquette skin is easily stained may occur.

The above JIS-L-1096 standard (A
Method) specifies a test method for evaluating the general properties of woven fabric as a “general fabric test method”. A test piece is attached to one end of a cylinder, and air is sucked in by a suction fan at the other end. This is a method of measuring the amount of air passing through a test piece (cm ³ / cm ² · second) and calculating the air permeability.

Next, the warp is a twin yarn of 20-40 count, the weft is a double yarn of 20-40 count, and the warp density of the base fabric is 30-60 / inch.
The weft density is preferably from 25 to 60 yarns / inch. When the warp and weft are thicker than 20th, the moquette skin becomes hard, and when used for seats, the gap between the base fabrics is reduced, the air permeability is reduced, and the texture may be poor. There is. If it is thinner than 40th, the strength of the moquette skin may be reduced and the moquette may be easily broken.

On the other hand, if the warp density is less than 30 yarns / inch, the decoration, appearance and strength of the moquette skin may be reduced, and the moquette may be easily broken. On the other hand, when the warp density is higher than 60 yarns / inch, the gap between the base fabrics is reduced and the air permeability is reduced, so that the sound absorbing performance may be reduced.

If the weft density is less than 25 yarns / inch, the decorating properties, appearance and strength of the moquette skin may be reduced and the moquette may be easily broken. On the other hand, when the weft density is greater than 60 yarns / inch, the gap between the base fabrics is reduced and the air permeability is reduced, so that the sound absorbing performance may be reduced. The twin yarn is a yarn obtained by twisting two yarns, and the number of warp yarns and weft yarns is counted using the twin yarn as one unit.

The impregnated amount of the resin backing material is 30 to 9
It is preferably 0 g / m ² . The impregnation amount is 30 g
If it is less than / m ² , the pile yarns may come off due to insufficient adhesion between the base fabric and the pile base. If the impregnation amount is more than 90 g / m ² , a film is formed on the back surface of the base fabric, so that sound is likely to be reflected and the sound absorption may be reduced.

As the above-mentioned resin backing material, for example, a resin having a low viscosity is used in order to improve the permeability with respect to a conventional acrylate resin, vinyl acetate resin or the like. However ^{, since the} above resin backing material may ooze to the surface of the design, the foamed backing material is formed by mixing and foaming air when applying the resin backing material, and the apparent viscosity of the resin backing material is reduced. Can be increased. This prevents seepage,
In addition, the base fabric can be stably impregnated with the resin backing material.

Preferably, the foamed backing material is made of an acrylic ester resin or the like having a foaming ratio of 2 to 8 times. If the expansion ratio is less than 2 times, the resin backing material may leach onto the surface of the design. If the expansion ratio is more than 8 times, the amount of adhesion may decrease, and the pile yarn may be easily removed. .

Next, it is preferable that the moquette skin is furnished and the bristle depth is at least half the pile thread height from the surface of the moquette skin. By performing the above-mentioned hair splitting, the pile yarn is loosened, and the air can more easily pass through the moquette skin.

When the bristle depth is less than 1/2 of the pile yarn height, the pile yarn is loosened near the surface of the moquette skin and the air permeability increases, but the bristle at the root of the pile yarn is sufficient. Therefore, it is difficult to improve air permeability. For this reason, there is a possibility that the effect of hair splitting cannot be obtained. Note that the pile yarn height refers to the length from the surface of the base fabric to the surface of the moquette skin, which is the tip of the pile yarn.

Next, the above sound absorbing interior material can be used as an interior material for automobiles. Of the above interior materials for automobiles, when used as automobile seats in particular, the automobile seat comprises a skeleton constituting a normal seat and a cushion material provided around the skeleton. The sound absorbing interior material according to the present invention is used as the cushion material (see FIG. 3).

In particular, in an automobile, various noises such as noise generated by an engine, noise due to running tires and the road surface, or wind noise during running enter a cabin and give a passenger an unpleasant sensation. Therefore, when the sound absorbing interior material having excellent sound absorbing properties of the present invention is used as a cushion material to form a seat for an automobile, a great effect is achieved in reducing noise in the interior of the automobile. In addition to the above, it can be widely used, for example, as a surface material of an inner wall, such as a ceiling or a door lining material in a car room, or a sofa or wall lining of furniture.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 A sound absorbing interior material according to an embodiment of the present invention is shown in FIG.
This will be described with reference to FIG. As shown in FIG. 2, the sound-absorbing interior material 1 of this embodiment includes a porous body 101 and a moquette skin 10 that covers the porous body 101.

[0027] As shown in FIG.
The greige fabric 15 is constructed by weaving the pile yarn 11 into a base fabric 16 consisting of a warp 18 and a weft 19.
By applying the foamed resin backing material 12 to the back surface 161 of the greige machine 15, the resin backing material 12 penetrates between the pile base 110 and the base cloth 16 as shown in FIG. Pile base 11
0 is adhered, and unnecessary portions (voids) are not applied. Further, JIS-L-10 in the moquette skin 10 described above.
The air permeability according to the 96 standard (Method A) is 10.4 cm ³ / cm
² seconds. Note that reference numeral 162 in FIG. 1 denotes the surface of the moquette skin 10.

As shown in FIG. 4, the resin backing material 12 joins adjacent warp 18, weft 19 and pile bases 110 of the pile yarn 11 to each other. For this reason, there are some gaps 190 between the joints between the warp 18, the weft 19 and the pile yarn 11 adjacent to each other. In the moquette skin 90 shown in FIG. 9 according to the conventional example, as shown in FIG.
Since the resin backing material 92 is provided to fill the gap between the pile yarns 11, there is no gap corresponding to the gap 190.

As shown in FIG. 2, between the moquette skin 10 and the porous body 101, the moquette skin 1 is provided.
A lamination pad 102 is provided for the purpose of preventing generation of wrinkles of 0 and securing the shape. The warp 18 and the weft 19 are made of Tetron / rayon yarn, and the pile yarn 11 is made of polyester spun yarn. Further, the porous body 101 is made of polyurethane foam, and the lami pad 102 is also made of polyurethane foam material.

As shown in FIG. 3, the sound absorbing interior material is suitable for use as an automobile seat 2. That is, the vehicle seat 2 includes a skeleton (not shown) constituting the seat and a cushion material provided around the skeleton. The sound absorbing interior material 1 according to the present invention is used as the cushion material.

Next, a method of manufacturing the moquette skin 10 will be described. First, the pile yarn 11 is woven into the weft 19 while intersecting the weft 19 with the warp 18 to obtain a greige machine 15. The details such as the thickness and density of the warp 18 and the like are shown in Sample 2 in Table 1 described later.

Next, the acrylate resin and air are fed into a foaming machine, and they are mixed to foam the acrylate resin to form a foamed backing material. Next, the foam backing material is applied to the back 1
61 is applied by a known technique. Thereafter, the foaming backing material is solidified by drying the greige 15 to form the resin backing material 12.

Next, the operation of this embodiment will be described.
In the sound absorbing interior material 1 of this example, as shown in FIG.
The resin backing material 12 is impregnated between the pile base 110 and the warp 18 and the weft 19 on the back surface 161 of the greige machine 15. For this reason, no thick and layered resin backing material is provided on the back surface of the greige machine 15 as in the prior art (see FIG. 9). Therefore, air permeability from the front surface of the moquette skin 10 to the back surface 161 is good.

The moquette skin 10 is made of JIS-L
The air permeability according to -1096 standard (Method A) is 5 to 60 cm ³
/ Cm ² · second Moquette skin with excellent air permeability.
For this reason, the sound transmitted from the outside can easily penetrate the moquette skin 10 and thereafter easily reach the porous body 101 existing inside the sound absorbing interior material 1. Since the porous body 101 is a polyurethane foam having high sound absorbing properties, sound is efficiently absorbed in the porous body 101.

The moquette skin 10 is made of pile yarn 1
Since 1 gives a luxurious feel, it is suitable as a cushion material for the car seat 2.

Embodiment 2 In this embodiment, as shown in Table 1 and FIG. 5, the sound absorbing performance of the sound absorbing interior material according to the present invention and the conventional interior material are compared and explained. Samples 1 and 2 according to the present invention and comparative samples C1 and C2 according to the conventional example are configured by coating a porous body with a moquette skin having a configuration as shown in Table 1.

As shown in the first embodiment, the moquette skins of the samples 1 and 2 are formed by applying a foamed backing material of an acrylic ester resin to the back surface of the greige machine. The moquette skins of the comparative samples C1 and C2 are formed by applying a non-foamed acrylate-based resin backing material to a greige machine. In Table 1, Sample 1, Sample 2, Sample C
Sample 1 and sample C2 are each composed of different wefts. Sample 1 and sample C1 and sample 2 and sample C2 have different amounts of applied resin backing material. Also,
In the column indicating the thickness of the warp and the weft in Table 1, "30 /
The expression "2" indicates that a 30th twin yarn was used.

Next, the normal incidence sound absorption coefficient of the above sample and the comparative sample was measured by the normal incidence method (３ octave) specified in JIS-A-1405 “Method of measuring normal incidence sound absorption coefficient of building material by pipe method”. Band frequency). 250-2000H based on the result of the above measurement
The average sound absorption coefficient in each frequency band of z was calculated. In addition, the air permeability of the above-mentioned sample and the comparative sample was measured according to JIS-L
It was measured based on the -1096 standard (Method A). In addition, the weight per unit area was measured.

The results of the above measurements are shown in Table 1 and FIG. The measurement results for a plurality of samples of Comparative Sample C2 and Sample 2 were all plotted in FIG. Also,
The values of the air permeability and the average sound absorption coefficient in Table 1 of Sample 2 and Comparative Sample C2 are average values of a plurality of samples.

As described above, the air permeability is 5 to 60 cm ³ / c
Samples 1 and 2 within the range of m ² · sec were found to have high average sound absorption. Then, by using a moquette skin having a resin backing material obtained by applying and drying a foam backing material, a sound absorbing interior material having an air permeability of 5 to 60 cm ³ / cm ² · second is obtained. I found that I could do it.

It has also been found that the resin backing material is sufficiently impregnated between the fibers of the base fabric and the pile base, so that it is possible to secure physical properties such as abrasion resistance and strength. Also, it was found that by reducing the thickness of the warp and the weft of the base fabric from 20/2 to 30/2, the gap between the base fabrics was increased, the air permeability was improved, and the average sound absorption was improved.

[0042]

[Table 1]

Embodiment 3 In this embodiment, as shown in FIGS. 6 and 7, a moquette skin 1 in which pile yarns 11 are split using a split brush 5 is shown. In FIG. 6, the bristle brush 5 has a cylindrical shape, and a large number of needles 50 are provided in the radial direction of the cylindrical surface. The hair splitting depth is at least の of the pile yarn height from the surface 162 of the moquette skin 10 to be obtained. Therefore, the length of the needle 50 is also 以上 or more of the pile yarn height. In performing the hair splitting, the conventional brushing method is used to adjust the clearance. Others are the same as the first embodiment.

By applying the bristle breakage, the pile yarns 11 that have become clumps can be loosened, and the degree of fibrillation of the pile yarns 11 can be increased, so that the gap between the pile yarns 11 can be increased. Thereby, the air permeability of the moquette skin 1 can be further increased.

FIG. 7 shows Samples 2 and 3 according to the sound absorbing interior material of the present invention and Comparative Sample C2 according to the conventional example.
2 shows the average sound absorption coefficient at. The moquette skin constituting Sample 2 and Comparative Sample C2 is the moquette skin shown in Table 1 of Embodiment 2. The moquette skin constituting the surface of the sample 3 is a moquette skin obtained by subjecting the sample 2 to the hair split according to the present example. The average sound absorption coefficient was measured in the same manner as in Example 2.

According to the figure, the magnitude of the average sound absorption coefficient is: sample 3> sample 2> comparative sample C2. That is, it was found that the average sound absorption coefficient of the sound absorbing interior material could be further increased by deeply splitting the moquette skin.

[0047]

As described above, according to the present invention, it is possible to provide a sound absorbing interior material having a high sound absorbing property using a moquette skin having a resin backing material provided on the back surface.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a moquette skin according to a first embodiment.

FIG. 2 is a cross-sectional explanatory view of the sound absorbing interior material according to the first embodiment.

FIG. 3 is a perspective view of an automobile seat according to the first embodiment.

FIG. 4 is an enlarged explanatory view of a main part of a moquette skin in the first embodiment.

FIG. 5 is a diagram showing the relationship between the average sound absorption coefficient and the air permeability of the sample according to the present invention and the comparative sample in the second embodiment;

FIG. 6 is an explanatory view of a hair splitting process on a moquette skin according to a third embodiment.

FIG. 7 is a diagram showing average sound absorption coefficients of a sample according to the present invention and a comparative sample in a third embodiment.

FIG. 8 is an explanatory sectional view of a main part of a sound absorbing interior material in a conventional example.

FIG. 9 is an enlarged explanatory view of a main part of a moquette skin in a conventional example.

FIG. 10 is a diagram showing a problem of a sound absorbing interior material in a conventional example.

[Explanation of symbols]

 1. . . 9. sound absorbing interior material; . . Moquette skin, 11. . . Pile yarn, 110. . . Pile base, 12. . . 14. resin backing material, . . Greige, 16. . . Base cloth, 161. . . Back, 18. . . Warp, 19; . . Weft,

Continued on the front page (72) Inventor Hideyuki Hayashi 100 Kanayama, Ichiriyama-cho, Kariya-shi, Aichi Pref. Inside Toyota Auto Body Co., Ltd. (72) Inventor Kiyotsuji Terada 29, Mibumori-cho, Nakagyo-ku, Kyoto, Kyoto, Japan Inside the Tatsumura Art Textile Company (72) Inventor Noriaki Takebe 29, Mibumori-cho, Nakagyo-ku, Kyoto, Kyoto City, Japan 72) Inventor Munesaki Miyazaki 1-82, Toyosaka-cho, Toyota-shi, Aichi Prefecture Inside Tatsumura Art Textile Co., Ltd. (56) References JP-A 7-181979 (JP, A) JP-A 7-199956 (JP, A) JP-A-4-122214 (JP, A) JP-A-5-63381 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10K 11/16-11/175 B60R 13 / 08

Claims (6)

(57) [Claims] 1. A sound-absorbing interior material comprising a porous body and a moquette skin covering the porous body, wherein the moquette skin is formed by weaving pile yarns into a base fabric consisting of warps and wefts. The back of the greige is impregnated with a resin backing material, and the moquette skin has a permeability of 5 to 60 cm ³ / cm ² · according to JIS-L-1096 standard (Method A). Second, a sound-absorbing interior material. 2. The warp according to claim 1, wherein the warp is 20-4.
No. 0 twin yarn, and the weft yarn is 20-40 count double yarn, and the base fabric has a warp density of 30 to 60 yarns.
A sound-absorbing interior material characterized by having an inch and a weft density of 25 to 60 yarns / inch. 3. The sound absorbing interior material according to claim 1, wherein the impregnated amount of the resin backing material is 30 to 90 g / m ² . 4. The method according to claim 1, wherein:
A sound-absorbing interior material, wherein the resin backing material is formed by foaming an acrylate resin or a vinyl acetate resin. 5. The method according to claim 1, wherein:
The moquette skin is furled, and the bristle depth is one pile height higher than the surface of the moquette skin.
/ 2 or more. 6. The method according to claim 1, wherein:
The sound-absorbing interior material is an interior material for automobiles.