JP2006052479A - Soundproof fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soundproof favric expressing sound absorption effect by being arranged in a passage of sound waves. <P>SOLUTION: The fabric installed in the passage of sound waves in order to obtain sound absorption effect is provided by using a spun yarn made by bringing two or more yarns having 20D-200D yarn diameter to be a yarn having 300D-2000D yarn diameter and twisting the same in 30 turns/m-500 turns/m to have ≤120% fabric density per 1 inch based on 100% theoretical value. In a frequency range around 500-1500 KHz having good audible sound characteristics to human, especially the spun yarn can reduce sound energy owing to comparatively good sound absorption characteristics in a high pitched sound region. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fabric that absorbs or suppresses house noise, road noise, and railway noise, and more particularly to a soundproof fabric such as a sound absorbing fabric and a sound insulating fabric. The sound-absorbing fabric and / or the sound-proofing fabric of the present invention can be accommodated in a box made of metal such as stainless steel or wood and used as a soundproofing device, or can be laid on the ceiling or under the floor as it is. It can also be used by putting it in a wall, or it can be used by attaching it to building materials.

  As a conventional sound-absorbing material, the technical idea of the double-sided sound-absorbing plate of Patent Document 1 can be cited. That is, the double-sided sound-absorbing plate of Patent Document 1 includes a sound-absorbing material formed into a rectangular plate shape, a frame body that surrounds and supports the four outer sides of the sound-absorbing material, and a sound-absorbing material that is not surrounded by the frame body. It is composed of a perforated plate that is spaced apart and covers the surface, and is detachably attached to the frame.

  In the double-sided sound absorbing plate, the fibrous sound absorbing material formed into a rectangular plate shape with a predetermined bulk specific gravity has a thickness of 50 to 200 mm, is formed into a rectangular plate shape with a predetermined bulk specific gravity, and is laminated in a plurality of layers. The fibrous specific sound-absorbing material has a bulk specific gravity of 32 kg / m 3 or more, and the fibrous specific sound-absorbing material on both sides has a bulk specific gravity of 32 to 64 kg / m 3. The thickness of the fibrous sound-absorbing material of the intermediate layer is preferably 50% or more with respect to the total thickness. The separation distance between the perforated plate and the surface of the fibrous sound absorbing material, that is, the thickness of the air layer is 10 to 30 mm.

  In the double-sided sound absorbing plate of Patent Document 1, the sound absorption rate of a sound absorbing plate having a thickness of a certain level or higher is increased. However, when the two sound absorbing materials are completely independent and set to a sound absorbing material having a preferable thickness, the double-sided sound absorbing plate. However, if the thickness of the double-sided sound absorbing plate is suppressed, the thickness of the sound absorbing material is reduced and the sound absorbing performance is reduced.

However, in Patent Document 1, the sound absorption rate in an audible frequency range with a frequency characteristic of 1000 Hz is about 0.7 at a thickness of 100 mm, and the functional analysis of the double-sided sound absorbing plate of Patent Document 1 depends only on the thickness of the double-sided sound absorbing plate. Therefore, it was unclear whether the sound absorption performance or the soundproof performance was exhibited.
JP 2000-129636 A

  In the said patent document 1, it was unclear what the function of a double-sided sound-absorbing board depends on the fiber. For this reason, the sound absorption coefficient in the audible frequency range with a frequency characteristic of 1000 Hz cannot be uniquely determined depending on the fiber, with a value of about 0.7 at a thickness of 100 mm. Moreover, in the said patent document 1, although it demonstrates with the sound absorption characteristic, if the fiber density of a double-sided sound-absorbing board is made high, it is estimated that a soundproof characteristic improves, but since the basic characteristic was unknown in the prior art, I couldn't clarify that either.

  Then, this invention makes it a subject to provide the soundproof textiles which can be arrange | positioned in the path | route of a sound wave and can acquire the soundproofing effect.

  The fabric disposed in order to obtain a sound absorption effect in the sound wave passage as the soundproof fabric according to claim 1 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. The yarn is a spun yarn that is twisted in the range of 30 times / m to 500 times / m.

  The spun yarn forms a woven fabric as warp and weft. The yarn unit diameter, the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and sound absorption performance. Judged to be a relatively soft fabric.

  The relationship between the above conditions and sound absorption is that when two or less yarns in the yarn diameter range of 20D to 200D are used and the yarn diameter is in the range of 300D to 2000D, the mechanical strength becomes weak and This is not preferable because the characteristic of reducing (absorbing) the acoustic energy due to repeated reflection between them is deteriorated. Further, the yarn having a yarn diameter in the range of 300D to 2000D has a mechanical strength that is high in absorption characteristics due to the specification as a civil engineering material and mutual reflection. As an estimate, two or more yarns having a yarn diameter in the range of 20D to 200D are used, and a yarn having a yarn diameter in the range of 300D to 2000D and twisted in a range of 30 times / m to 500 times / m. These spun yarns may have their vibrations canceled at a point slightly away from the point where the acoustic energy is received by the yarn propagation multiplier. Alternatively, there is a possibility that a phase shift occurs when the vibration of the yarn occurs and the vibration is canceled out.

  In the present invention, the yarn diameter is expressed in denier (D) based on the experiment of the present embodiment, but it can also be expressed as a tex equation (T = D / 9). They can be expressed by conversion. Hereinafter, the description regarding this thread diameter is abbreviate | omitted.

  The woven fabric disposed in order to obtain a sound absorption effect in the sound wave passage as the soundproof woven fabric according to claim 2 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. And a filament yarn obtained by twisting the yarn in a range of 30 times / m to 500 times / m.

  The filament yarn forms a woven fabric as warp and weft. The unit yarn diameter, the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and sound absorption performance. Judged to be a relatively soft fabric.

  The relationship between the above conditions and sound absorption is that when two or less yarns in the yarn diameter range of 20D to 200D are used and the yarn diameter is in the range of 300D to 2000D, the mechanical strength becomes weak and This is not preferable because the characteristic of reducing (absorbing) the acoustic energy due to repeated reflection between them is deteriorated. Further, the yarn having a yarn diameter in the range of 300D to 2000D has a mechanical strength that is high in absorption characteristics due to the specification as a civil engineering material and mutual reflection. As an estimate, two or more yarns having a yarn diameter in the range of 20D to 200D are used, and a yarn having a yarn diameter in the range of 300D to 2000D and twisted in a range of 30 times / m to 500 times / m. As with the spun yarn, there is a possibility that the vibration of these filament yarns is offset slightly from the point where the acoustic energy is received by the propagation multiplier of the yarn. Alternatively, there is a possibility that a phase shift occurs when the vibration of the yarn occurs and the vibration is canceled out.

  The fabric disposed in order to obtain a sound absorbing effect in the sound wave passage as the soundproof fabric according to claim 3 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. A yarn and a spun yarn and / or a filament yarn obtained by twisting the yarn in a range of 30 times / m to 500 times / m are provided.

  The span yarn and filament yarn may be either warp yarn or weft yarn, and may be warp yarn or weft yarn by the span yarn or filament yarn. Here, the type of yarn, the yarn unit diameter and the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and sound absorption performance. is there.

  The woven fabric disposed in order to obtain a sound absorbing effect in the sound wave passage as the soundproof woven fabric according to claim 4 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. A spun yarn in which the yarn is twisted in a range of 30 times / m to 500 times / m, and a trilobal type with a cross-sectional shape of 2.0 to 4.0 so as to increase the surface area. A yarn having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D and a filament yarn having a twist of 30 times / m or less is provided. .

  Any of the above-mentioned spun yarn and filament yarn may be warp yarn or weft yarn. Here, the type of yarn, the yarn unit diameter and the convergent yarn diameter and the number of twists, the fabric density, the physical strength and The sound absorption performance is specified, and it is a relatively soft fabric when artificially judged.

  The laminated fabric as the soundproof fabric according to claim 5 uses two or more yarns having a yarn diameter of 20D to 200D to form a yarn having a yarn diameter of 300D to 2000D and 30 times / m. Two or more spun yarns twisted in the range of 500 to 500 times / m and / or yarns in the range of 20D to 200D are used to make yarns in the range of 300D to 2000D and 30 times. It consists of a fabric made of filament yarn twisted in the range of / m to 500 times / m.

  The fabric woven with the spun yarn and / or the filament yarn may be either front or back, and as a result, two or more woven fabrics may overlap each other. Here, the type of yarn, the yarn unit diameter, the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and the sound absorption performance.

  The spun yarn and / or filament yarn of the soundproof woven fabric according to claim 6 has one tri-loval type yarn diameter 20D to 200D having a deformity of 2.0 to 4.0 so as to increase the surface area of the cross-sectional shape. The yarn mixed in the above range is used as a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn is twisted 30 times / m or less.

  Mixing one or more trilobal type yarn diameters 20D to 200D means mixing one or more yarns, and there is no noticeable change in characteristics due to the insertion of one thread. The change was confirmed. Here, the type of yarn, the yarn unit diameter, the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and the sound absorption performance.

  The laminated fabric as the soundproof fabric according to claim 7 uses two or more yarns having a yarn diameter of 20D to 200D to form yarns having a yarn diameter of 300D to 2000D, and 30 times / m. Woven fabric formed of spun yarns twisted through 500 times / m, and / or a cross-sectional shape of a trilobal type yarn diameter of 20D to 200D having a deformity of 2.0 to 4.0 so as to increase the surface area. A yarn having a diameter of 300D to 2000D using two or more yarns and a woven fabric formed of filament yarns twisted at 30 times / m or less is provided.

  The fabric woven with the spun yarn and the fabric woven with the filament yarn may be either front or back. As a result, two or more of the same or different types of fabrics are overlapped. do it. Here, the type of yarn, the yarn unit diameter, the convergent yarn diameter, the number of twists, and the fabric density physically specify the mechanical strength and the sound absorption performance.

  The filament yarn of the soundproof fabric according to claim 8 uses a yarn converged from interlace by twisting.

  The number of yarns converged from the interlace by twisting may be basically plural.

  The soundproofing fabric according to any one of claims 1 to 8, wherein the soundproofing fabric according to claim 9 is a laminated fabric disposed in a sound wave passage to obtain a sound absorbing effect and a sound insulating effect. It is a pile of fabrics.

  This soundproofing fabric attenuates sound between the two by superimposing a sound absorbing effect and a sound insulating effect on the sound wave passage.

  The soundproof fabric according to claim 1 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. The yarn is formed by a spun yarn that is twisted in a range of 30 times / m to 500 times / m.

  Therefore, the spun yarn has a relatively good sound absorption characteristic in the high sound range, and can attenuate the acoustic energy, particularly at a frequency around 500-1500 KHz where human audible characteristics are good.

  The woven fabric disposed in order to obtain a sound absorption effect in the sound wave passage as the soundproof woven fabric according to claim 2 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. The yarn is formed by a filament yarn that is twisted in the range of 30 times / m to 500 times / m.

  Accordingly, the filament yarn has a relatively good sound absorption characteristic in the low frequency range, and can attenuate the acoustic energy, particularly at a frequency in the vicinity of 500 to 1500 KHz where human audible characteristics are good.

  The fabric disposed in order to obtain a sound absorbing effect in the sound wave passage as the soundproof fabric according to claim 3 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. A yarn and a spun yarn and / or a filament yarn obtained by twisting the yarn in a range of 30 times / m to 500 times / m are provided.

  Therefore, particularly at frequencies around 500-1500 KHz where human audible characteristics are good, the spun yarn has a high sound range and the filament yarn has a low sound range and has good sound absorption characteristics, so that acoustic energy can be attenuated.

  The woven fabric disposed in order to obtain a sound absorbing effect in the sound wave passage as the soundproof woven fabric according to claim 4 has a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D. A spun yarn in which the yarn is twisted in a range of 30 times / m to 500 times / m, and a trilobal type with a cross-sectional shape of 2.0 to 4.0 so as to increase the surface area. A yarn having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter of 20D to 200D and a filament yarn having a twist of 30 times / m or less is provided. .

  Therefore, particularly at frequencies around 500-1500 KHz where human audible characteristics are good, the spun yarn has a high sound range and the filament yarn has a low sound range and has good sound absorption characteristics, so that acoustic energy can be attenuated.

  The laminated fabric as the soundproof fabric according to claim 5 uses two or more yarns having a yarn diameter of 20D to 200D to form a yarn having a yarn diameter of 300D to 2000D and 30 times / m. To a yarn having a yarn diameter of 300D to 2000D using two or more woven fabrics of a spun yarn twisted in a range of 500 to 500 times / m and / or a yarn having a diameter of 20D to 200D. It is made of a fabric made of filament yarn twisted in a range of 30 times / m to 500 times / m.

  Therefore, particularly at frequencies around 500-1500 KHz where human audible characteristics are good, the spun yarn has a high sound range and the filament yarn has a low sound range and has good sound absorption characteristics, so that acoustic energy can be attenuated.

  The spun yarn and / or filament yarn of the soundproof woven fabric according to claim 6 has one tri-loval type yarn diameter 20D to 200D having a deformity of 2.0 to 4.0 so as to increase the surface area of the cross-sectional shape. The yarn mixed in the above range is used as a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn is twisted 30 times / m or less.

  Therefore, since one or more tri-lobal type yarn diameters of 20D to 200D having a degree of deformation of 2.0 to 4.0 are mixed, the tri-lobal type yarns in the range of yarn diameters of 300D to 2000D are mixed. The sound reflected by the surface of the yarn is absorbed by the other spun yarn and / or filament yarn and as a woven fabric thereof, so that the spun yarn has a high frequency range particularly at a frequency of about 500 to 1500 KHz where human audibility is good. The filament yarn has good sound absorption characteristics in the low sound range and can attenuate the acoustic energy.

  The laminated fabric as the soundproof fabric according to claim 7 uses two or more yarns having a yarn diameter of 20D to 200D to form yarns having a yarn diameter of 300D to 2000D, and 30 times / m. A yarn having a diameter of 20D to 200D of a trilobal type having a cross-sectional shape of 2.0 to 4.0 so as to increase the surface area. Is used to form a yarn having a yarn diameter in the range of 300D to 2000D, and a woven fabric in which the yarn is a twisted filament yarn of 30 turns / m or less.

  Therefore, both the fabrics have a function capable of attenuating acoustic energy and having good sound absorption characteristics in the high sound range of the spun yarn and the filament yarn in the low sound range at a frequency near 500-1500 KHz where human audible characteristics are good. The acoustic energy in a wide frequency range can be attenuated by the characteristics of each other.

  The filament yarn of the soundproof woven fabric according to claim 8 uses yarn converged by twisting from interlace, so that the sound absorption characteristics are improved by the softness that is partially twisted, Acoustic energy can be attenuated.

  The soundproofing fabric according to any one of claims 1 to 8, wherein the soundproofing fabric according to claim 9 is a laminated fabric disposed in a sound wave passage to obtain a sound absorbing effect and a sound insulating effect. By superimposing the fabrics, the sound can be greatly attenuated between the fabrics by obtaining the sound absorption effect and / or the sound insulation effect. In particular, the transmission of acoustic energy can be cut off at a frequency in the vicinity of 500 to 1500 KHz where human audibility is good.

[Embodiment]
Next, the sound-absorbing and sound-proofing fabric according to the embodiment of the present invention will be described using characteristic diagrams.

  With respect to the embodiment of the sound-absorbing and sound-proofing fabric of the present invention, the test conditions shown in FIG.

  FIG. 1 shows a sound absorption coefficient measuring apparatus for sound absorbing and soundproofing fabrics according to an embodiment of the present invention.

  In the figure, a speaker 1 is a sound source and is connected to a frequency generator 2 (not shown). The speaker 1 is connected to an end, and sound is input from one end of the test box 3. A sample 4 is attached to the test box 3, and 50 mm (point a), 75 mm (point b), and 100 mm (point c) from the back of the sample 4 are the measurement points of the sample 4. Moreover, it is closed at 300 mm from the point where the sample 4 is attached.

  FIG. 2 is a characteristic diagram of the sound absorption coefficient at a position 50 mm away from the sample 4 with the fiber material conforming to the civil engineering sheet standard of the conventional product, and FIG. 3 is 75 mm away from the sample 4 with the fiber material conforming to the civil engineering sheet standard of the conventional product. FIG. 4 is a characteristic diagram of the sound absorption coefficient at a position 100 mm away from the sample 4 made of a fiber material conforming to the civil engineering sheet standard of the conventional product.

  In the apparatus shown in FIG. 1, a product number T-300 (Teijin (trademark)) of a fiber material conforming to a civil engineering sheet standard, a mass of 310 g / m 2, a thickness of 0.5 mm, a tensile strength of 310 (kgf / 3 cm), and an elongation of 15 (%), Tear strength (dry) 75 × 75 (kgf), tear strength (wet) 85 × 85 (kgf), hydraulic conductivity 2.0 × 10-2 (cm / sec), 1500 denier (D) 2 is a characteristic diagram measured with an air layer 50 mm (point a) from the back of the sample 4 measured with a measuring device, and a characteristic diagram measured at 75 mm (point b). A characteristic diagram shown in FIG. 3 and measured at 100 mm (point c) is shown in FIG. Here, it can be seen that the conventional commercially available product has a maximum sound absorption coefficient of about 0.6.

  Further, in the characteristic diagram of FIG. 4 measured at 100 mm (point c), it can be seen that the sound absorption coefficient is reduced in the vicinity of 1750 Hz. This is because one end of the test box 3 is closed, and the measurement point 100 mm (point c) from the back of the sample 4 is a point 200 mm from the end face of the test box 3, so it is estimated that the interference is caused by reflection. .

  FIG. 5 is a table illustrating material yarns used in the sound-absorbing fabric and the soundproof fabric according to the embodiment of the present invention.

Embodiment 1
FIG. 6 is a frequency characteristic diagram of the sound-absorbing fabric according to the first embodiment of the present invention.

  The warp yarn (A) and the weft yarn (A) are made of a saturated polyester yarn, a common type No. 10 double yarn (2/10), that is, 1900D yarn using two 900D yarns, and With a spun yarn twisted in a range of 280 turns / m, the fabric density per inch is 120% with a theoretical value of 100%.

  Here, in the back air layer of 50 mm (point a), the absorption rate is 1 at 1100 Hz, and the absorption rate is 0.84 at 2000 Hz, and it can be seen that absorption is performed with high efficiency up to a high frequency.

  According to the inventor's sample preparation results, two or more yarns having a diameter of 20D to 200D made of a saturated polyester yarn are used to obtain a yarn having a diameter of 300D to 2000D. Furthermore, if the fabric density per inch is within the range of ± 20% with the theoretical value being 100% by the spun yarn twisted in the range of 30 times / m to 500 times / m, the same It was found that results were obtained.

Embodiment 2
FIG. 7 is a frequency characteristic diagram of the sound-absorbing fabric according to the second embodiment of the present invention.

  The warp yarn (B) and the weft yarn (B) are made into a yarn of 1500D using 10 yarns of a saturated polyester yarn having a diameter of 150D / 36 (36D and 36D), and twisted in a range of 70 turns / m. Thus, the density of the woven fabric per inch is within the range of 110% with the theoretical value being 100%.

  Here, it can be seen that the back air layer of 50 mm (point a) has an absorption rate of about 1 at 700 Hz and an absorption rate of 0.8 at 2000 Hz, and absorbs with high efficiency at a low frequency.

  According to the inventor's sample preparation results, two or more yarns having a diameter of 20D to 200D made of a saturated polyester yarn are used to obtain a yarn having a diameter of 300D to 2000D. Further, if the filament density formed by twisting it in the range of 30 times / m to 500 times / m is within the range of ± 20% where the theoretical value is 100%, the same It was found that results were obtained.

  What should be noted here is that the reflection estimated to be the influence of the fiber unit occurs at 400 Hz or less and 600 Hz.

Embodiment 3
FIG. 8 is a frequency characteristic diagram of the sound-absorbing fabric according to the third embodiment of the present invention.

  The warp yarn (C) and weft yarn (C) are 3800 interlaced yarns of 150D / 48 (48D, 150D) made of saturated polyester yarn, and twisted 4 (12) yarns, and 1800D yarn And a filament yarn obtained by twisting it in the range of 70 turns / m, the fabric density per inch is set to 110% with a theoretical value of 100%.

  Here, in the rear air layer of 50 mm (point a), the absorption rate is about 1 at 550 Hz, and the absorption rate is 0.7 at 2000 Hz, which absorbs with high efficiency at a low frequency, but more than the embodiment of FIG. It can be seen that the characteristics are slightly degraded.

  According to the inventor's sample preparation results, it was confirmed that it is a requirement of the invention to use a saturated polyester yarn having a yarn diameter in the range of 300D to 2000D. Further, if the filament density formed by twisting it in the range of 30 times / m to 500 times / m is within the range of ± 20% where the theoretical value is 100%, the same It was found that results were obtained.

  What should be noted here is that the soundproof reflection that is estimated to be the influence of the fiber unit occurs at 500 Hz or less.

Embodiment 4
FIG. 9 is a frequency characteristic diagram of the sound-absorbing fabric according to the fourth embodiment of the present invention.

  The warp yarn (D) and the weft yarn (D) are 1500D yarns using 10 yarn diameters of 150D / 48 (48D and 150D) made of saturated polyester yarns, and within a range of 70 times / m. The twisted filament yarn has a fabric density per inch of 110% with a theoretical value of 100%.

  Here, in the rear air layer of 50 mm (point a), the absorption rate is about 0.92 at 1000 Hz, the absorption rate is 0.75 at 2000 Hz, and is absorbed with high efficiency at a low frequency, which is more characteristic than the embodiment of FIG. It is clear that the absorptivity in the low frequency region is lowered.

  According to the inventor's sample preparation results, a yarn having a diameter of 300D to 2000D made of a saturated polyester yarn, and a filament yarn formed by twisting the yarn in a range of 30 times / m to 500 times / m, It has been found that the same result can be obtained if the fabric density per inch is within 115% with the theoretical value being 100%.

  What should be noted here is that the absorbability in the low frequency region is reduced at 500 Hz or less, and therefore, the woven fabric of the present embodiment has a converged number of yarns having a yarn diameter of 20D to 200D and a yarn diameter of 300D. It is clear that the number of twists as a yarn in the range of 2000 to 2000D is a requirement. Of course, it is also one of the requirements that the fabric density per inch is within a range of ± 20% where the theoretical value is 100%.

Embodiment 5
FIG. 10 is a frequency characteristic diagram of the sound-absorbing fabric according to the fifth embodiment of the present invention.

  The warp yarn (F) and the weft yarn (F) are made into a yarn of English type 531D using a common yarn diameter type No. 10 single yarn made of regenerated saturated polyester yarn and twisted in the range of 280 times / m. The spun yarn has a fabric density per inch of 110% with a theoretical value of 100%.

  Here, it can be seen that the back air layer 50 mm (point a) has an absorptance of 0.95 at 500 Hz and an absorptance of 0.7 at 2000 Hz.

  In this woven fabric, at 400 Hz or less, the absorption in the low frequency region is greatly changed due to reflection, and when the fiber yarn becomes hard, soundproof reflection estimated to be the influence of the fiber unit occurs.

Embodiment 6
FIG. 11 is a frequency characteristic diagram of the sound-absorbing fabric according to the sixth embodiment of the present invention.

  The warp yarn (A) is a yarn diameter of a saturated polyester yarn, a common formula No. 10 double yarn (2/10), that is, two 900D yarns are used to make a 1800D yarn, and it is 280 times / m. It is a spun yarn twisted in the range.

  As for the weft yarn (C), three yarns having a diameter of 150D / 48 (48 yarns and 150D) made of saturated polyester yarns are interlaced, and four yarns (12 yarns) are twisted to obtain a yarn of 1800D. Is a filament yarn twisted in the range of 70 times / m.

  By both, the fabric density per inch is 110% with the theoretical value being 100%.

  Here, in the rear air layer of 50 mm (point a), the absorption rate becomes 1 at 800 Hz, and the absorption rate becomes 0.88 at 2000 Hz, and it can be seen that absorption is performed with high efficiency from a low frequency to a high frequency. That is, it can be seen that the advantages of the first embodiment in FIG. 6 and the third embodiment in FIG. 8 are alive.

  Here, in the rear air layer of 50 mm (point a), the absorption rate is about 1 at 750 Hz, and the absorption rate is 0.87 at 2000 Hz. It can be seen that absorption is performed with high efficiency from a low frequency to a high frequency.

Embodiment 7
FIG. 12 is a frequency characteristic diagram of the sound-absorbing fabric according to the seventh embodiment of the present invention.

  For the warp yarn (C), three yarns of saturated polyester yarn with a diameter of 150D / 48 (48 yarns and 150D) are interlaced, and four yarns (12 yarns) are twisted to obtain a yarn of 1800D. Is a filament yarn twisted in the range of 70 times / m.

  The weft yarn (A) is a yarn diameter of a saturated polyester yarn, common formula No. 10 double yarn (2/10), that is, two 900D yarns are used to make a 1800D yarn, and this is 280 times / m. It is a spun yarn twisted in the range.

  That is, the seventh embodiment is obtained by changing the warp and weft of the sixth embodiment. Here, it can be seen that even if the warp and weft are changed, the characteristics hardly change.

  Moreover, by both, the fabric density per inch is set to a density within a range of ± 20% where the theoretical value is 100%.

  Here, it can be seen that the back air layer of 50 mm (point a) has an absorption rate of 1 at 800 Hz and an absorption rate of 0.82 at 2000 Hz, and absorbs with high efficiency from a low frequency to a high frequency. That is, it can be seen that the advantages of the first embodiment in FIG. 6 and the third embodiment in FIG. 8 are alive.

  Here, in the rear air layer of 50 mm (point a), the absorption rate is about 1 at 800 Hz, and the absorption rate is 0.83 at 2000 Hz, and it can be seen that the absorption is performed with high efficiency from a low frequency to a high frequency.

Embodiment 8
FIG. 13 is a frequency characteristic diagram of the sound-absorbing fabric according to the eighth embodiment of the present invention.

  The warp yarn (G) and the weft yarn (G) have a theoretical density value of 100 per inch without twisting a yarn having a deformed cross section (hexagonal cross section) made of a saturated polyester yarn with a filament yarn having a diameter of 1400D. % Is a woven fabric having a density of 110%.

  Here, in the back air layer of 50 mm (point a), although the absorption rate is around 500 Hz, the absorption rate is 0.55 at 2000 Hz, and only a specific range of low frequency is absorbed with high efficiency. I understand that.

  That is, it can be seen that a relatively large amount of reflection occurs due to an irregular angle in the rear air layer of 50 mm (point a).

Embodiment 9
FIG. 14 is a frequency characteristic diagram of the sound-absorbing fabric according to the ninth embodiment of the present invention.

  The warp yarn (G) and the weft yarn (G) are not twisted with a filament yarn having a thread diameter of 1400D, as in the eighth embodiment of FIG. The fabric density per inch is a fabric having a theoretical value of 100% and a density of 110%. Two pieces of the woven fabric are overlapped.

  Here, in the rear air layer of 50 mm (point a), the absorption rate is close to 0.9 at 500 Hz, the absorption rate is 0.73 at 2000 Hz, and high-efficiency absorption is achieved in a low frequency range of about 400 Hz. Further, it can be seen that the characteristics of the eighth embodiment shown in FIG. 13 are smoothly improved.

Embodiment 10
FIG. 15 is a frequency characteristic diagram of the sound-absorbing fabric according to the tenth embodiment of the present invention.

  The sound-absorbing fabric of the tenth embodiment is obtained by superposing three fabrics of the first embodiment of FIG. 6, the fabric of the sixth embodiment of FIG. 11, and the fabric of the seventh embodiment of FIG.

  In this embodiment, sound absorption characteristics are good in a frequency range near 400 to 2000 KHz, that is, from a low sound range to a high sound range, and acoustic energy can be attenuated. In addition, the reflection from the opposite side is also absorbed by overlapping the plurality of layers, and it is understood that the use of a plurality of sheets is an ideal use state.

Embodiment 11
FIG. 16 is a frequency characteristic diagram of the sound-absorbing fabric according to the eleventh embodiment of the present invention.

  The sound-absorbing fabric of the eleventh embodiment is obtained by superposing two fabrics of the third embodiment of FIG. 8 and the first embodiment of FIG.

  In this embodiment, the absorptance is 0.6 or more in the frequency range near 300 to 2000 KHz. However, although the sound absorption characteristic is flat from the low sound range to the high sound range, the absorptance is lowered unlike the embodiment 10 in FIG. That is, if the sound-absorbing fabrics are simply overlapped, the absorptance does not increase, and some of the properties have good absorptivity, and the other absorptivity decreases.

  That is, the woven fabric according to Embodiment 3 in FIG. 8 has a soundproof reflection estimated to be the influence of the fiber unit at 500 Hz or less. However, it is not limited to this, and the influence of the fiber unit is estimated even at a frequency exceeding 500 Hz. It is estimated that soundproof reflection occurs.

Embodiment 12
FIG. 17 is a frequency characteristic diagram of the sound-absorbing fabric according to the twelfth embodiment of the present invention.

  The sound-absorbing fabric according to the twelfth embodiment is obtained by superposing two fabrics according to the first embodiment shown in FIG. 6 and the fourth embodiment shown in FIG.

  In this embodiment, the absorptance is about 0.9 or more in the frequency range near 400 to 2000 KHz. That is, the sound absorption characteristics are good from the low sound range to the high sound range, and the acoustic energy can be attenuated. Moreover, the reflection from the opposite side is also absorbed by superimposing the plurality of layers, and it is understood that the use of a plurality of sheets is a substantially ideal use state.

However, even if the fabric of Embodiment 1 of FIG. 6 is used, it can be seen that the absorption rate is lower than the characteristics of the fabric of Embodiment 1 of FIG.
Comparative Example FIG. 18 is a frequency characteristic diagram of a sound-absorbing woven fabric of wrapping yarn as a comparative example.

  As a comparative example, the wrapping yarn sound-absorbing woven fabric has a warp yarn (E) and a weft yarn (E) each having a diameter of a saturated polyester yarn and a No. 6 single yarn wound with 10 150D yarns made of a saturated polyester yarn 1550D And the fabric density per inch is 110% with the theoretical value being 100%.

  Here, it can be seen that the back air layer 50 mm (point a) has a low absorptance overall, although there are points where the absorptance is 1 at about 300 Hz and 400 Hz.

  As mentioned above, in each embodiment, it demonstrated from the absorptance. In summary, it is as follows.

  The sound-absorbing fabric of the above-described embodiment is a fabric having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. By using a spun yarn obtained by twisting the yarn in a range of 30 times / m to 500 times / m, the fabric density per inch is within a range of ± 20%, where the theoretical value is 100%. For example, at a frequency in the vicinity of 500 to 1500 KHz where human audible characteristics are good, the spun yarn has a relatively good sound absorption characteristic in a high sound range and can attenuate acoustic energy.

  When the number of yarns in the range of yarn diameters 20D to 200D is two or less, the mechanical strength is weak when the yarns in the range of yarn diameters 300D to 2000D are used, and the characteristics of repeatedly reflecting and absorbing between yarns are reduced. This is not preferable. Further, the yarn having a yarn diameter in the range of 300D to 2000D has a mechanical strength that is high in absorption characteristics due to the specification as a civil engineering material and mutual reflection. The fabric density per inch is within the range of ± 20%, where the theoretical value is 100%. From the inventor's empirical rule, a strict boundary line was found between 121% and strict. Although it is not, it is a choice from the fact that sound absorption characteristics appear in the soft feeling.

  The sound-absorbing woven fabric of the above embodiment uses two or more yarns having a yarn diameter in the range of 20D to 200D to form a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn has a speed of 30 times / m to 500 times / m. By the filament yarn twisted in the range, the fabric density per inch can be within a range of ± 20% with the theoretical value being 100%.

  Therefore, particularly at a frequency in the vicinity of 500 to 1500 KHz where human audibility is good, the filament yarn has a relatively good sound absorption characteristic in the low sound range, and can attenuate acoustic energy. That is, it is shown that a sound-absorbing woven fabric can be produced in the same manner with the spun yarn and the filament yarn.

  The sound-absorbing woven fabric of the above embodiment uses two or more yarns having a yarn diameter in the range of 20D to 200D to form a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn has a speed of 30 times / m to 500 times / m. Spun yarns and / or filament yarns twisted in the range can be provided, and the fabric density per inch can be within a range of ± 20% with the theoretical value being 100%.

  Therefore, particularly at frequencies around 500-1500 KHz where human audible characteristics are good, the spun yarn has a high sound range and the filament yarn has a low sound range and has good sound absorption characteristics, so that acoustic energy can be attenuated. That is, it is shown that a sound-absorbing woven fabric can be produced in the same manner with the spun yarn and the filament yarn.

  The sound-absorbing woven fabric of the above embodiment uses two or more yarns having a yarn diameter in the range of 20D to 200D to form a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn has a speed of 30 times / m to 500 times / m. Using two or more spun yarns twisted in the range and two or more trilobal type yarn diameters in the range of 20D to 200D with a cross-sectional shape of 2.0 to 4.0 so as to increase the surface area. A yarn in the range of 300D to 2000D and a filament yarn in which the yarn is twisted in the range of 30 turns / m or less, and the fabric density per inch is in the range of ± 20% with the theoretical value being 100%. Can be inside.

  Therefore, in particular, even when two or more trilobal type yarn diameters in the range of 20D to 200D are used so as to increase the surface area of the cross-sectional shape, the yarn diameter of 300D to 2000D is used. With filament yarns that are in the range and twisted in the range of 30 turns / m or less, there are few tri-lobe type yarns, so at a frequency around 500-1500 KHz where human audible characteristics are good, In the high sound range, the filament yarn has good sound absorption characteristics in the low sound range and can attenuate the acoustic energy.

  The overlapped woven fabric as the sound-absorbing fabric of the above embodiment uses two or more yarns having a yarn diameter in the range of 20D to 200D to form yarns having a yarn diameter in the range of 300D to 2000D, and 30 times / m. Spun yarn twisted in a range of 500 to 500 turns / m, and a fabric density per inch within a range of ± 20% with a theoretical value of 100%, and / or a yarn diameter of 20D to 200D The yarn density in the range of 300D to 2000D using two or more yarns and the filament yarn formed by twisting the yarn in the range of 30 times / m to 500 times / m has a fabric density per inch. A woven fabric having a theoretical value of 100% within a range of ± 20% can be obtained.

  Therefore, particularly at frequencies around 500-1500 KHz where human audible characteristics are good, the spun yarn has a high sound range and the filament yarn has a low sound range and has good sound absorption characteristics, so that acoustic energy can be attenuated.

  The spun yarn and / or filament yarn of the sound-absorbing woven fabric of the above embodiment has one tri-loval type yarn diameter 20D to 200D having a deformity of 2.0 to 4.0 so that the surface area of the cross-sectional shape is increased. By mixing the above, a yarn having a yarn diameter in the range of 300D to 2000D can be obtained, and the yarn can be twisted 30 times / m or less.

  Therefore, since one or more tri-lobal type yarn diameters of 20D to 200D having a degree of deformation of 2.0 to 4.0 are mixed, the tri-lobal type yarns in the range of yarn diameters of 300D to 2000D are mixed. The sound reflected by the surface of the yarn is absorbed by the other spun yarn and / or filament yarn and as a woven fabric thereof, so that the spun yarn has a high frequency range particularly at a frequency of about 500 to 1500 KHz where human audibility is good. The filament yarn has good sound absorption characteristics in the low sound range and can attenuate the acoustic energy.

  The overlapped woven fabric as the sound-absorbing fabric of the above embodiment uses two or more yarns having a yarn diameter in the range of 20D to 200D to form yarns having a yarn diameter in the range of 300D to 2000D, and 30 times / m. A spun yarn with a twist of 500 times / m and a fabric density per inch within a range of ± 20% with a theoretical value of 100%, and / or a modified cross-sectional shape with a large surface area Using two or more tri-loval type yarns with a degree of 2.0 to 4.0 and a diameter of 20D to 200D to make a yarn with a diameter of 300D to 2000D, and twisting it 30 times / m or less It is possible to make a woven fabric having a fabric density per inch within a range of ± 20% with a theoretical value of 100%.

  Therefore, both the fabrics have a function capable of attenuating acoustic energy and having good sound absorption characteristics in the high sound range of the spun yarn and the filament yarn in the low sound range at a frequency near 500-1500 KHz where human audible characteristics are good. The acoustic energy in a wide frequency range can be attenuated by the characteristics of each other.

  As the filament yarn of the sound-absorbing woven fabric of the above embodiment, a yarn converged by interlacing by twisting can be used. The yarn converged from the interlace by the twisting process can improve the sound absorption characteristics by the softness that is partially twisted, and can attenuate the acoustic energy.

  Moreover, in each embodiment, although the structure was specified from the absorptance, if it sees by the concept of soundproofing, it can also be comprised as follows.

  The soundproof fabric when carrying out the present invention is a fabric having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. The yarn density in the range and the spun yarn formed by water twisting 500 times / m or more can make the woven fabric density per inch within the range of 130 to 160% with the theoretical value being 100%.

  That is, when the number of yarns in the range of yarn diameters 20D to 200D is one or less, when the yarn diameter is in the range of 300D to 2000D, the mechanical strength is weak and the reflection is repeatedly absorbed between the yarns. Is unfavorable because it decreases. The yarn having a yarn diameter in the range of 300D to 2000D has a mechanical strength that is enhanced as a civil engineering material specification and mutual reflection. Furthermore, twisting it more than 500 times / m makes the fiber firm by twisting it to the limit of the fiber and at the same time increases the reflection ability. And, the fabric density per inch is within the range of 130 to 160% with the theoretical value being 100%. From the inventor's rule of thumb, a strict boundary line is found between 130 and 160%. It is not a choice, but it is a choice because sound insulation is produced in the hard feeling.

  Therefore, by being composed of the spun yarn, the spun yarn has good soundproofing characteristics in the high sound range, and can cut off the acoustic energy, especially at frequencies around 500-1500 KHz where human audibility is good. The soundproofing effect can be obtained by being arranged in the passage.

  The soundproof fabric when carrying out the present invention is a fabric having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. The yarn density in the range and the filament yarn formed by water twisting 500 times / m or more can make the woven fabric density per inch within a range of 130 to 160% with the theoretical value being 100%.

  Therefore, the filament yarn is hard, and the filament yarn has a good soundproofing property in a low sound range, and can cut off the sound energy, particularly at a frequency of about 500 to 1500 KHz where human audibility is good.

  The soundproof fabric when carrying out the present invention is a fabric having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. Spun yarn and filament yarn formed by water twisting 500 times / m or more, and the fabric density per inch is in the range of 130 to 160% with the theoretical value being 100% It can also be.

  Accordingly, the span yarn and the filament yarn are hard, regardless of whether they are warp yarn or weft yarn, so that the span yarn has a high sound range particularly at a frequency of about 500 to 1500 KHz where human audibility is good. Thus, the filament yarn has good soundproofing characteristics in the low sound range and can cut off the acoustic energy.

  The soundproof fabric when carrying out the present invention is a fabric having a yarn diameter of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D. A spun yarn formed by water-twisting 500 times / m or more, and a tri-lobe type yarn diameter 20D to 2.0 having a deformity of 2.0 to 4.0 so as to increase the surface area. A yarn having a diameter of 300D to 2000D by using two or more yarns in the range of 200D, and a filament yarn twisted at 50 times / m or more, and has a theoretical fabric density per inch. It can also be in the range of 130-160% which makes a value 100%.

  Therefore, the spun yarn and the filament yarn are configured to be hard, and the reflectivity of the triloval type yarn diameter in the range of 20D to 200D having a deformity of 2.0 to 4.0 can be used, and the human audible characteristics are good. At frequencies around 500-1500 KHz, in particular, the spun yarn has a high sound range, and the filament yarn has a low sound range and good soundproofing characteristics, and can cut off the sound energy.

  In the case of practicing the present invention, each of the woven fabrics overlapped is a yarn having a yarn diameter in the range of 300D to 2000D using two or more yarns having a yarn diameter in the range of 20D to 200D, and the yarn is 500 times / m or more in water. Two or more woven fabrics having a fabric density per inch within the range of 130 to 160% with a theoretical value of 100% and / or yarns with a yarn diameter of 20D to 200D are used. The yarn density in the range of 300D to 2000D and the filament yarn formed by water twisting 500 times / m or more is in the range of 130 to 160% where the fabric density per inch is 100% of the theoretical value. It consists of a woven fabric inside.

  Therefore, the spun yarn and the filament yarn become a hard woven fabric, and the reflectivity by the yarn having the irregularity degree of 2.0 to 4.0 in the range of the yarn diameter 20D to 200D can be maintained, and the human audible characteristic is good. At frequencies around 500-1500 KHz, in particular, the spun yarn has a high sound range, and the filament yarn has a low sound range and good soundproofing characteristics, and can cut off the sound energy.

  The spun yarn and / or filament yarn of the soundproof fabric in the case of carrying out the present invention has a trilobal type yarn diameter of 20D to 200D having a deformity of 2.0 to 4.0 so as to increase the surface area of the cross-sectional shape. One or more yarns may be mixed to obtain a yarn having a yarn diameter in the range of 300D to 2000D, and the yarn may be water-twisted 500 times / m or more.

  Therefore, since one or more tri-lobal type yarn diameters of 20D to 200D having a degree of deformation of 2.0 to 4.0 are mixed, the tri-lobal type yarns in the range of yarn diameters of 300D to 2000D are mixed. The sound reflected by the surface of the yarn is reflected by the other spun yarn and / or filament yarn and by the reflection of the fabric, and at a frequency close to 500-1500 KHz where human audibility is good. The filament yarn has good soundproofing characteristics in the low sound range and can cut off the acoustic energy.

  A piled fabric as a soundproof fabric in the case of carrying out the present invention uses two or more yarns having a yarn diameter in the range of 20D to 200D to form yarns having a yarn diameter in the range of 300D to 2000D, and is used 500 times. A spun yarn formed by water twisting at a rate of at least / m, and a fabric density per inch within a range of 130 to 160% with a theoretical value of 100%, and a cross-sectional shape with a degree of deformation of 2 to increase the surface area A filament yarn formed by using two or more tri-loval type yarn diameters 20D to 200D of 0.0 to 4.0 to make a yarn having a yarn diameter of 300D to 2000D and water-twisting it 500 times / m or more. The fabric density per inch is within the range of 130 to 160% with the theoretical value being 100%.

  Therefore, both the fabrics have a function of attenuating acoustic energy with a good sound absorption characteristic in the high frequency range, especially in the span yarn, and the filament yarn in the low frequency range at a frequency near 500-1500 KHz where human audible characteristics are good. The acoustic energy in a wide frequency range can be attenuated due to the mutual characteristics.

  The filament yarn of the soundproof fabric in the case of carrying out the present invention uses a yarn converged from interlace by twist processing, so that the twist can be partially strengthened, and depending on the hardness, human audibility At a frequency in the vicinity of 500-1500 KHz, which has good characteristics, the soundproofing characteristics are good and the acoustic energy can be cut off.

  The soundproof fabric in the case of carrying out the present invention is obtained by superimposing a soundproof fabric and a soundproof fabric on a superposed fabric arranged to obtain a sound absorption effect and a sound insulation effect in a sound wave passage. By obtaining the sound absorbing effect and the sound insulating effect, the sound can be greatly attenuated between the fabrics. In particular, the transmission of acoustic energy can be cut off at a frequency in the vicinity of 500 to 1500 KHz where human audibility is good.

  The sound-absorbing fabric and the soundproof fabric of the present embodiment are usually accommodated in a box made of a metal plate such as stainless steel having a length and width of 500 to 2000 mm and a thickness of about 10 to 100 mm, that is, a soundproof wall. , Suspended from information, or attached with a predetermined tension up and down and / or left and right. The metal plate box is provided with a plurality of openings for introducing sound into the sound source side. The sound guided to the box of the metal plate is absorbed or sound-insulated by a sound-absorbing fabric and / or a sound-proof fabric.

  However, the sound-absorbing fabric and / or the soundproof fabric of the present embodiment can also be accommodated in a box made of wood such as stainless steel having a length of 500 to 2000 mm in length and width and a thickness of about 10 to 100 mm. . In addition, the sound-absorbing fabric and / or the sound-proof fabric of the present embodiment can be used as it is by laying it on the ceiling or under the floor, or by putting it in a wall, or sticking it to a building material. It can also be used.

  Although saturated polyester yarn is used here, the present invention is not limited to saturated polyester yarn, and other synthetic fibers and natural fibers can be used.

FIG. 1 shows a sound absorption coefficient measuring apparatus for sound absorbing and soundproofing fabrics according to an embodiment of the present invention. FIG. 2 is a characteristic diagram of the sound absorption coefficient at a position 50 mm away from a sample made of a fiber material conforming to the civil engineering sheet standard of the conventional product. FIG. 3 is a characteristic diagram of the sound absorption coefficient at a position 75 mm away from a sample made of a fiber material conforming to the civil engineering sheet standard of a conventional product. FIG. 4 is a characteristic diagram of the sound absorption coefficient at a position 100 mm away from a sample made of a fiber material conforming to the civil engineering sheet standard of the conventional product. FIG. 5 is a table illustrating material yarns used in the sound-absorbing fabric and the soundproof fabric according to the embodiment of the present invention. FIG. 6 is a frequency characteristic diagram of the sound-absorbing fabric according to the first embodiment of the present invention. FIG. 7 is a frequency characteristic diagram of the sound-absorbing fabric according to the second embodiment of the present invention. FIG. 8 is a frequency characteristic diagram of the sound-absorbing fabric according to the third embodiment of the present invention. FIG. 9 is a frequency characteristic diagram of the sound-absorbing fabric according to the fourth embodiment of the present invention. FIG. 10 is a frequency characteristic diagram of the sound-absorbing fabric according to the fifth embodiment of the present invention. FIG. 11 is a frequency characteristic diagram of the sound-absorbing fabric according to the sixth embodiment of the present invention. FIG. 12 is a frequency characteristic diagram of the sound-absorbing fabric according to the seventh embodiment of the present invention. FIG. 13 is a frequency characteristic diagram of the sound-absorbing fabric according to the eighth embodiment of the present invention. FIG. 14 is a frequency characteristic diagram of the sound-absorbing fabric according to the ninth embodiment of the present invention. FIG. 15 is a frequency characteristic diagram of the sound-absorbing fabric according to the tenth embodiment of the present invention. FIG. 16 is a frequency characteristic diagram of the sound-absorbing fabric according to the eleventh embodiment of the present invention. FIG. 17 is a frequency characteristic diagram of the sound-absorbing fabric according to the twelfth embodiment of the present invention. FIG. 18 is a frequency characteristic diagram of a sound-absorbing woven fabric of wrapping yarn as a comparative example.

Explanation of symbols

1 Speaker 2 Frequency generator 3 Test box 4 Sample

Claims (9)

In the fabric arranged to obtain the soundproofing effect in the sound wave passage,
The woven fabric is formed by using two or more yarns having a yarn diameter in the range of 20D to 200D to obtain a yarn having a yarn diameter in the range of 300D to 2000D, and twisting the yarn in a range of 30 times / m to 500 times / m. A soundproof fabric characterized by being formed of spun yarn. In the fabric arranged to obtain the soundproofing effect in the sound wave passage,
The woven fabric is formed by using two or more yarns having a yarn diameter in the range of 20D to 200D to obtain a yarn having a yarn diameter in the range of 300D to 2000D, and twisting the yarn in a range of 30 times / m to 500 times / m. A soundproof woven fabric characterized by being formed of filament yarn. In the fabric arranged to obtain the soundproofing effect in the sound wave passage,
Spun yarn and filament formed by using two or more yarns having a yarn diameter in the range of 20D to 200D to obtain yarns having a yarn diameter in the range of 300D to 2000D, and twisting them in the range of 30 times / m to 500 times / m A soundproof fabric comprising a yarn. In the fabric arranged to obtain the soundproofing effect in the sound wave passage,
Using two or more yarns having a yarn diameter in the range of 20D to 200D to obtain a yarn having a yarn diameter in the range of 300D to 2000D, and a spun yarn obtained by twisting the yarn in a range of 30 times / m to 500 times / m;
Using two or more trilobal type yarn diameters in the range of diameters 20D to 200D having a cross-sectional shape of 2.0 to 4.0 so as to increase the surface area, a yarn having a diameter in the range of 300D to 2000D is obtained. A soundproof fabric comprising a filament yarn twisted in a range of 30 times / m or less. In the piled fabrics arranged to obtain soundproofing effect in the sound wave passage,
Each overlapped fabric uses two or more yarns having a yarn diameter of 20D to 200D to form yarns having a yarn diameter of 300D to 2000D, and is set to a range of 30 times / m to 500 times / m. A soundproof woven fabric formed of twisted spun yarn and / or filament yarn.   The spun yarn and / or filament yarn is mixed with one or more triloval type yarn diameters 20D to 200D having a deformity of 2.0 to 4.0 so that the surface area of the spun yarn and / or the filament yarn is increased, and the yarn diameter is 300D to 2000D. The soundproof woven fabric according to any one of claims 1 to 5, wherein the yarn is in the range of 1 and a twist of 30 turns / m or less. In the piled fabrics arranged to obtain soundproofing effect in the sound wave passage,
The overlapped woven fabric is formed by using two or more yarns having a yarn diameter of 20D to 200D to obtain a yarn having a yarn diameter of 300D to 2000D, and twisted 30 times / m to 500 times / m. Woven fabric formed with spun yarn,
And / or using two or more trilobal type yarn diameters in the range of diameters 20D to 200D having a deformity of 2.0 to 4.0 so as to increase the surface area of the cross-sectional shape, a yarn having a diameter in the range of 300D to 2000D. And a woven fabric formed of filament yarns twisted at 30 times / m or less.   The soundproof fabric according to any one of claims 1 to 7, wherein the filament yarn is a yarn converged from interlace by twisting.   The laminated fabric disposed in order to obtain a soundproofing effect and a soundproofing effect in a sound wave passage, wherein the soundproofing fabric according to any one of claims 1 to 8 is superimposed. Soundproof fabric.

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