WO2001039172A1 - Structure d'insonorisation - Google Patents

Structure d'insonorisation Download PDF

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Publication number
WO2001039172A1
WO2001039172A1 PCT/JP1999/006527 JP9906527W WO0139172A1 WO 2001039172 A1 WO2001039172 A1 WO 2001039172A1 JP 9906527 W JP9906527 W JP 9906527W WO 0139172 A1 WO0139172 A1 WO 0139172A1
Authority
WO
WIPO (PCT)
Prior art keywords
soundproof
film
structure according
soundproofing
support
Prior art date
Application number
PCT/JP1999/006527
Other languages
English (en)
Japanese (ja)
Inventor
Yasuyuki Ohira
Mitsuo Hori
Original Assignee
Shishiai-Kabushikigaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shishiai-Kabushikigaisha filed Critical Shishiai-Kabushikigaisha
Priority to PCT/JP1999/006527 priority Critical patent/WO2001039172A1/fr
Publication of WO2001039172A1 publication Critical patent/WO2001039172A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/18—Internal lining, e.g. insulating
    • B61D17/185—Internal lining, e.g. insulating for sound insulating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/026—Porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element

Definitions

  • the present invention relates to a soundproof structure that can be applied to a wide range of uses such as vehicles such as automobiles and trains, aircraft, and houses. Background art
  • a soundproof sheet to which a filler has been added has been applied, whereby noise outside the vehicle, outside the machine, and outdoors has been blocked by the soundproof sheet, and quietness inside the vehicle, inside the machine, or inside the room has been ensured.
  • other soundproofing materials there are foamed resin sheets having an open-cell structure and fiber sheets such as nonwoven fabrics and felts, and these were used alone or in combination with the aforementioned soundproofing sheets. . Sound insulation made of this foamed resin sheet and fiber sheet In the case of a seat, noise from outside the vehicle, outside the aircraft, and outdoors is absorbed and attenuated by energy conversion as frictional heat when passing through the open cells of the soundproofing sheet and the fiber gap while colliding.
  • this soundproofing sheet needs to be cut or bent according to the size and shape of the application area, but since the unit weight was increased by filling a large amount of filler to ensure sound insulation, it was broken.
  • sound-insulating sheets made of foamed resin sheets or fiber sheets require a thicker wall if sufficient sound-proofing performance is to be ensured.
  • a seat that has sufficient soundproofing and is as thin as possible has been desired. Under these circumstances, lighter, thinner, and higher-performance soundproofing materials were required in the fields of vehicles, aircraft, and houses.
  • the present invention has been made in view of the technical problems of such conventional soundproofing materials, and provides a soundproofing structure that has sufficient soundproofing performance, is lightweight and thin, and has good handleability and workability. It is intended to provide. Disclosure of the invention
  • a first aspect of the present invention provides a novel soundproofing comprising a support having a large number of holes or depressions, and a soundproof film stretched in the holes or depressions of the support.
  • the structure was proposed. As shown in FIGS. 1 to 5, this soundproof structure 20 is composed of a support 21 and a soundproof film 22, and a large number of holes or recesses 23 formed in the support 21 are framed.
  • the support 21 of the soundproof structure 20 is made of a soundproof film that does not easily bend or break against external forces applied during manufacture, handling, and use of the soundproof structure 20. As long as it can support 22 at a predetermined tensile strength, its material, structure, etc.
  • the soundproof film 22 are not particularly limited as long as they can react and vibrate sensitively to the impact of sound, but more preferably a polymer material is provided with an active ingredient that increases the amount of dipole moment. It is a blended film.
  • the soundproof film containing the active ingredient will be described. As shown in Figure 7, Vibration occurs when sound collides with the film 11.
  • the amount of dipole moment also depends on the magnitude of the sound energy applied to the film. Therefore, considering the temperature when applying the soundproof structure, the frequency of the sound applied to the soundproof structure, the magnitude of the energy, etc., select the polymer material that gives the largest amount of dipole moment at that time. It is desirable to use it.
  • Preferred polymer materials for the soundproof film include, for example, polyvinyl chloride, polyethylene, chlorinated polyethylene, polypropylene, ethylene monovinyl copolymer, polymethyl methacrylate, polyvinylidene fluoride, polyisoprene, polystyrene, and styrene.
  • the selection of the polymer material constituting the soundproofing film is not limited to the amount of dipole moment inside the film, but also depends on the application and form of use of the soundproofing structure. It is also desirable to consider the availability, temperature performance (heat resistance and cold resistance), weather resistance and price. In this soundproof film, an active ingredient capable of dramatically increasing the amount of dipole moment in the film is blended with a polymer material constituting the film.
  • the active component is a component that dramatically increases the amount of the dipole moment inside the film.
  • the active component itself has a large dipole moment, or the active component itself has a small dipole moment.
  • active ingredients that induce such effects include N, N-dicyclohexylbenzothiazyl-2-sulfenamide (DCHBSA), 2-mercaptobenzothiazolyl (MBT), and dibenzothiazyl sulfide (MBT).
  • DCHBSA N-dicyclohexylbenzothiazyl-2-sulfenamide
  • MTT 2-mercaptobenzothiazolyl
  • MTT dibenzothiazyl sulfide
  • MBTS N-cyclohexinolebenzothiazyl_2-snorefenamide
  • CB S N-tert-butinolebenzothiazilyl 2-bis / refenamide
  • BSS N-oxyjetjen lembenozhiazil 2-sulfenamide
  • OB N-oxyjetjen lembenozhiazil 2-sulfenamide
  • benzothiazyl group-containing compounds such as S
  • DPBS N-diisopropanolenbenzothiazyl-2-sulfenamide
  • an azoyl group bonded to the benzene ring Benzotriazole as a mother nucleus, to which a phenyl group is bonded 2_ ⁇ 2'—Hydroxoxy-3 '— (3 ", A", 5 ", 6" tetraha 1-Drophthalimidemethyl) 1-5'-Methylphenyl ⁇ -Benzotriazo
  • the amount of the above-mentioned active ingredient is preferably from 10 to 300 parts by weight to 100 parts by weight of the polymer material. For example, if the amount of the active ingredient is less than 10 parts by weight, In this case, the effect of increasing the dipole moment cannot be sufficiently obtained by adding the active ingredient, and when the amount of the active ingredient exceeds 300 parts by weight, the components are not sufficiently compatible. Sometimes. In deciding the active ingredient contained in the polymer material, it is preferable to take into consideration the easiness of compatibility of the active ingredient and the polymer material, that is, the SP value, and to select a substance having a similar value. The amount of dipole moment in the active ingredient varies depending on the type of active ingredient, similarly to the amount of dipole moment inside the film.
  • This soundproof film can be obtained by blending a polymer material and an active ingredient, and if necessary, a corrosion inhibitor and a dye, and forming the blend into a film.
  • the polymer material and the active ingredient are blended, and the blend is formed into a film by a conventionally known molding method.
  • Preferred embodiments of the soundproof structure 20 including the support 21 and the soundproof film 22 are described below.
  • various types of holes or dents 23 having a size corresponding to the type of sound are formed in the support 21, and a soundproof film 22 is stretched in each hole or dent 23 to provide one soundproofing.
  • the shape of the hole or depression 23 of the support 21 can be freely selected such as ⁇ , ⁇ , mouth, etc., but among them, ⁇ may cause corners when the soundproof film 22 is stretched. It is more preferable because it is difficult.
  • the size of the holes or dents 23 of the support body 21 is set to be the same, and the tensile strength of the soundproof film 22 stretched over the holes or the dents 23 is appropriately changed. It can also respond to unusual sounds.
  • FIG. 2 shows an example in which a soundproof film 22 is attached to a support 21 having a large number of holes 23 formed thereon, and a soundproof film 22 is stretched over each of the holes 23.
  • a soundproof film 22 is attached to a support 21 on which a number of recesses 23 are formed, and a soundproof film 22 is stretched over each of the recesses 23.
  • this soundproof structure 20 uses a thin soundproof film 22a, a thick soundproof film 22c, and a film 2b having a thickness between them, and these three types are used.
  • Soundproof films 2 2 a, 2 2 b, 22 c with different thicknesses are alternately laminated and integrated on two supports 21 with many holes or depressions 23 formed. Can also.
  • the soundproof films 22a, 22b, 22c of different thicknesses stretched between the holes or recesses 23 of the support 2 1 Is to be done. That is, the thin sound-insulating film 22a captures and attenuates high sounds, the thick sound-insulating film 22c catches and attenuates low sounds, and the soundproof film 22b having an intermediate thickness between them has an intermediate sound.
  • the soundproof structure 20 shown in Fig. 5 has three types of soundproof films 22a, 22b, 22c with different thicknesses stretched over a large number of holes or recesses 23 of one support 21. It is a thing.
  • b, 22c force, various sounds are captured and vibrated, and the attenuation is made.
  • the soundproof films 22a, 22b and 22c cut to the size are stretched for each hole or recess 23 of the support 21.
  • a soundproof film 22 of the same size as the support 21 is directly bonded to the support 21 so that the soundproof film 22 is stretched in each hole or recess 23. You can do that too.
  • a plurality of soundproof structures 20 as shown in FIGS. It can be used in combination with the soundproofing structure according to the third invention, or can be used together with a conventional soundproofing material.
  • the present invention comprises a support portion having a large number of holes or dents, and a soundproof film portion stretched over the holes or dents of the support portion, wherein the support portion and the soundproof film portion are simultaneously formed.
  • the present invention proposes a soundproof structure characterized by the following.
  • the soundproof film portion is the same as that of the first invention, and the description is omitted here.
  • This soundproofing structure is made by using the same material (resin) and integrally molding a part to be a support and a part to be a soundproofing film at the same time.
  • this soundproof structure can be obtained by simultaneously molding (injection molding) each of the parts using a single mold in which the part to be the support and the part to be the soundproof film are formed in the cavity. it can. For this reason, in this soundproofing structure, it is not necessary to separately prepare the soundproofing film and the support, and integrate them at all.
  • the portion serving as the support and the portion serving as the soundproofing film need not be integrated. Since they are completely integrated, there is no danger of them peeling or falling off. Also, since this soundproofing structure is molded using the same mold under the same molding conditions, the tensile strength of the soundproofing film stretched in the holes or recesses in the support is always constant. , Will be more homogeneous.
  • Preferred examples of the soundproof structure include a soundproof film portion having different thicknesses as shown in FIG. 5 and a soundproof structure provided with these in respective holes or recesses of the support portion.
  • the soundproof structure may have a form in which holes or recesses having different sizes are formed in the support portion, and a soundproof film portion having the same thickness is provided in each of the holes or recesses.
  • the sound-insulating film portion formed into a large hole or dent efficiently attenuates low-frequency sound
  • the sound-insulating film portion formed into a small hole or dent attenuates high-frequency sound. ing.
  • a plurality of soundproof structures as shown in FIG. 5 are used by lamination, or the soundproof structure according to the above-described first invention or the third It can be used in combination with the soundproof structure according to the present invention, or can be used together with a conventional soundproof material.
  • the third invention will be described.
  • a soundproof structure was proposed in which a soundproof film was stretched on the surface of a porous support.
  • the soundproof film is the same as that of the first invention, and the description is omitted here.
  • a fiber sheet such as a nonwoven fabric, a felt, a woven fabric, a knitted fabric, or a foamed resin sheet can be used.
  • Fiber sheets such as woven fabrics and non-woven fabrics have a structure in which the constituent fibers are entangled with each other regularly or irregularly, and the fiber structure is exposed as it is on the surface to create an uneven surface. ing.
  • a foamed resin sheet countless air bubbles are randomly present inside the resin, and the sheet surface also appears as it is on the sheet surface, resulting in a complex structure with many bumps and undulations. .
  • the soundproof film 22 protrudes from the surface of the porous support 21 as shown in FIGS. 9 and 10.
  • the soundproof film 22 is stretched and supported between the points made of the irregular fiber or resin protrusions on the surface of the porous support 21 1.
  • the soundproof structure 20 having the soundproof film 22 stretched on the surface of the porous support 21 is a frame (porous support) in which the soundproof film 22 is formed in various sizes and shapes. (1) Since it is supported by irregular fibers and convex portions of resin on the surface, the sound caught and attenuated by it is also different.
  • the soundproof film when a fiber sheet is used as a porous support, the soundproof film is supported by arbitrarily setting the fiber length, fiber diameter, basis weight, woven structure and mesh size. You can control the size of the frame. In other words, when taking measures against high noise, shorten the fiber length or reduce the fiber diameter, increase the basis weight, and reduce the size of the woven structure or mesh to reduce the spacing between the fibers that protrude from the fiber sheet surface. (The size of the frame supporting the soundproof film is reduced). On the other hand, when taking measures against low-pitched sounds, it is necessary to increase the size of the frame supporting the soundproof film. When a foamed resin sheet is used as a porous support, various sounds can be handled by appropriately adjusting the cell diameter / cell ratio.
  • the undulation of the foamed resin sheet surface becomes larger, the interval between the parts exposed on the foamed resin sheet surface and supporting the soundproof film becomes wider, and the soundproof film becomes larger. This will result in lower sound attenuation, as it will be supported by the frame.
  • the cell diameter is reduced and the cell rate is reduced, the undulations on the foamed resin sheet surface will be reduced, and the interval between the parts supporting the soundproof film will be narrower, and the soundproof film will be supported by a small frame. Thus, this will result in higher attenuation of the sound.
  • Figure 11 shows a foamed resin sheet 21a with a small cell diameter and cell rate and a foamed resin sheet 21b with a large cell diameter and cell rate, and a thin soundproof film 22a as a soundproof film.
  • This shows a soundproof structure 20 in which a soundproof film 22b and an intermediate thickness soundproof film 22c are alternately laminated and integrated.
  • a higher sound attenuation is performed on the side of the thin soundproof film 22 a and the foamed resin sheet 21 a having a small bubble diameter and a low bubble rate, and the thick soundproof film 2.
  • a lower sound attenuation is provided on the side of the foamed resin sheet 2 1b having a large cell diameter and a large cell rate with 2c.
  • a plurality of soundproof structures as shown in FIG. can be used in combination with a soundproof structure or with conventional soundproofing materials.
  • the soundproof structures according to the first, second, and third inventions described above can be applied to a wide range of uses such as vehicles such as automobiles and trains, aircraft, and houses.
  • FIG. 1 is an assembled perspective view showing a soundproof structure of the first invention.
  • FIG. 2 is an enlarged sectional view of a main part of the soundproof structure of the first invention.
  • FIG. 3 is an enlarged sectional view of a main part of another form of the soundproofing structure of the first invention.
  • FIG. 4 is an enlarged cross-sectional view of a main part of still another embodiment of the soundproof structure of the first invention.
  • FIG. 5 is an enlarged cross-sectional view of a main part of still another embodiment of the soundproof structure of the first invention.
  • Figure 6 is a schematic diagram showing dipoles inside the film.
  • Fig. 7 is a schematic diagram showing the state of the dipole inside the film when energy is applied.
  • FIG. 8 is a schematic diagram showing a state of a dipole inside a film when an active ingredient is blended.
  • FIG. 9 is an enlarged sectional view of a main part of the soundproof structure of the third invention.
  • FIG. 10 is an enlarged cross-sectional view of a main part of another embodiment of the soundproof structure of the third invention.
  • FIG. 11 is an enlarged cross-sectional view of a main part of still another embodiment of the soundproof structure of the third invention.
  • FIG. 12 is a schematic diagram showing an apparatus for measuring the soundproof performance of each soundproof structure according to Example 1, Example 2, and Comparative Example.
  • FIG. 13 is a graph showing the soundproof performance of each soundproof structure according to Example 1, Example 2, and Comparative Example.
  • Example Chlorinated polyethylene Erasuren 3 5 2 NA, (chlorinated polyethylene content 3 made 5 wt 0/0) Showa Denko Co., Ltd.) and, DCHBSA (Sanceler DZ- G, Sanshin Kagaku Kogyo Co., Ltd.) and, 7
  • the mixture was mixed in a mixing ratio of 0Z30, and the mixture was put into a kneading roll machine and kneaded, followed by hot pressing with a press machine to obtain a soundproof film (0.2 mm in thickness). Next, the obtained soundproof film was laminated and integrated on one surface side of two layers of glass wool to obtain a soundproof structure.
  • Comparative example Comparative example
  • the two laminated glass wools of Example 1 were used as a soundproof structure. Evaluation of soundproofing performance
  • the soundproofing structures according to the above-described example and comparative example were arranged on each wall in the experimental housing, and a spike was installed 50 cm away from the experimental housing.
  • a sound with a frequency of 50 to 63 OHz is generated from the beginning, and the sound is picked up by the external microphone installed at a position 10 cm outside the experimental housing and the internal microphone installed inside the experimental housing, and the sound pressure level is reduced.
  • the transmission loss was determined from the ratio of the sound pressure levels inside and outside the experimental housing obtained by measurement. The results are shown in FIG. For comparison, the transmission loss when the soundproof structure was not placed on the inner wall of the experimental housing was also calculated and is shown in FIG. FIGS.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention porte sur une structure d'insonorisation pouvant être utilisée dans de nombreuses applications, par exemple, des véhicules tels que des automobiles et des trains, des aéronefs, et des maisons. Cette structure se caractérise en ce qu'elle comprend un substrat pourvu d'un grand nombre de trous ou évidements et un film d'insonorisation étendu sur les trous ou évidements du substrat.
PCT/JP1999/006527 1999-11-22 1999-11-22 Structure d'insonorisation WO2001039172A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP1999/006527 WO2001039172A1 (fr) 1999-11-22 1999-11-22 Structure d'insonorisation

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Application Number Priority Date Filing Date Title
PCT/JP1999/006527 WO2001039172A1 (fr) 1999-11-22 1999-11-22 Structure d'insonorisation

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WO2001039172A1 true WO2001039172A1 (fr) 2001-05-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149117A (ja) * 2007-12-18 2009-07-09 Yamaha Corp 自動車天井用吸音構造及びその製造方法
JP2017115436A (ja) * 2015-12-24 2017-06-29 リンテック株式会社 遮音シートおよび遮音構造体

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Publication number Priority date Publication date Assignee Title
JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材
JPH10340087A (ja) * 1997-06-09 1998-12-22 Ikeda Bussan Co Ltd 防音断熱材
JPH10340088A (ja) * 1997-06-06 1998-12-22 Nisshin Steel Co Ltd 薄板吸音金属板の製造方法

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JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材
JPH10340088A (ja) * 1997-06-06 1998-12-22 Nisshin Steel Co Ltd 薄板吸音金属板の製造方法
JPH10340087A (ja) * 1997-06-09 1998-12-22 Ikeda Bussan Co Ltd 防音断熱材

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149117A (ja) * 2007-12-18 2009-07-09 Yamaha Corp 自動車天井用吸音構造及びその製造方法
JP2017115436A (ja) * 2015-12-24 2017-06-29 リンテック株式会社 遮音シートおよび遮音構造体

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