CN107700686B - Sound absorption and insulation board and manufacturing method thereof - Google Patents
Sound absorption and insulation board and manufacturing method thereof Download PDFInfo
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- CN107700686B CN107700686B CN201710861782.1A CN201710861782A CN107700686B CN 107700686 B CN107700686 B CN 107700686B CN 201710861782 A CN201710861782 A CN 201710861782A CN 107700686 B CN107700686 B CN 107700686B
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- 238000009413 insulation Methods 0.000 title claims abstract description 83
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000004745 nonwoven fabric Substances 0.000 claims description 75
- 239000000945 filler Substances 0.000 claims description 37
- 239000010410 layer Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses a sound absorption and insulation board and a manufacturing method thereof. Different mediums are arranged in the sound insulation part and the sound absorption part, after the two spaces are communicated, the mediums of the sound insulation part and the sound absorption part are mutually fused, or the medium in one space extends into the adjacent space, so that the distance of the sound wave passing through the medium in the transmission process is longer, more energy is consumed at the different mediums, and a stronger sound insulation effect is achieved.
Description
Technical Field
The invention relates to a sound insulation board, in particular to a sound absorption and insulation board and a manufacturing method thereof.
Background
Acoustic panels are a common construction material used to block noise, and porous materials with voids are typically added to conventional panels to block the transmission of sound waves.
At present, chinese patent publication No. CN106782482A discloses a composite sound absorption and insulation board which has a multi-layer structure, wherein an air layer is arranged between two panel honeycomb sandwich layers, and respective blocking wave troughs are avoided.
The sound absorption and insulation board is widely seen in the market, but the sound insulation strength of the sound absorption and insulation board is fixed, and noise encountered in life is an uncontrollable factor, and the time is large and small, so that the noise blocking effect of the sound absorption and insulation board is weakened when the sound absorption and insulation board is in a large noise environment.
Disclosure of Invention
The invention aims to provide a sound absorption and insulation board, which can adjust the sound insulation performance of the sound absorption and insulation board according to the actual noise in a construction environment.
The technical aim of the invention is realized by the following technical scheme:
the utility model provides a inhale sound insulation board, includes sound insulation part and sound absorption part, be equipped with the baffle between sound insulation part and the sound absorption part, it has compression state's fluffy filler to fill between sound absorption part and the baffle, one side that sound insulation part was towards the sound absorption part is equipped with the cavity, the baffle is detachable construction, and fluffy filler in the sound insulation part can expand and enter into in the cavity of sound insulation part after the baffle dismantles.
Through adopting above-mentioned technical scheme, be equipped with different mediums in sound insulation part and the sound absorption part, after the intercommunication between two spaces, the medium of sound insulation part and sound absorption part fuses each other, or in the medium in a space extends to adjacent space, makes the sound wave in the transmission in-process, and the distance that passes in the transmission in-process on the medium is longer, and more in the energy that consumes of different medium department, reaches stronger sound insulation effect. The baffle can play the effect of improving the supporting strength, can play limiting displacement to fluffy filler and non-woven fabrics again. After the baffle is disassembled, the solid filler is scattered, becomes fluffy after losing the limit, and improves the blocking capacity to sound waves. The cavity is originally gas, and when the fluffy filler and the non-woven fabric are sprung open and then are filled into the cavity, sound waves can be blocked by the fluffy filler and the non-woven fabric in the cavity in the transmission process, so that the aim of improving the sound insulation effect is fulfilled.
Further set up: the sound absorption part comprises corrugated plates, and the fluffy filler is filled in grooves on one side of the corrugated plates, which faces the sound insulation part.
Through adopting above-mentioned technical scheme, after sound insulation part and sound absorption part intercommunication, the fluffy filler of compression loses spacing power, expands, and the volume grow becomes more fluffy, and the sound wave can be absorbed more energy by fluffy filler when fluffy filler medium department transmits.
Further set up: the fluffy filler is coated with non-woven fabrics, and the non-woven fabrics are folded and accommodated in the grooves.
Through adopting above-mentioned technical scheme, the non-woven fabrics is spacing with fluffy filler for fluffy filler's fibre is difficult for dropping, and in the environment of using this kind of sound absorption and insulation board, fluffy filler fibre scatter the volume less, and harm to the human body is little.
Further set up: the non-woven fabric covered by the fluffy filler is folded on one side facing the sound insulation part.
Through adopting above-mentioned technical scheme, after the intercommunication between sound insulation part and the sound absorption part, the non-woven fabrics loses spacingly, becomes fluffy, improves the absorption capacity to the noise.
Further set up: the side plate which is coated on the side edges of the sound insulation part and the sound absorption part is arranged at the joint of the sound insulation part and the sound absorption part, a folded plate is arranged at one surface of the side plate, which faces the central axis of the sound insulation part, the folded plate is in an L shape, one right-angle side of the folded plate is parallel to the sound insulation part, and the baffle is arranged between the right-angle side and the sound absorption part.
Through adopting above-mentioned technical scheme, when need removing the baffle, only need pull out the baffle, can remove the spacing to fluffy filler promptly.
Further set up: the folding part of the non-woven fabric is arranged in a strip shape, and the strip-shaped part of the non-woven fabric is folded in a Z shape.
By adopting the technical scheme, the strip-shaped object is folded in half, the strip-shaped object has certain resetting capability, and after the external force pressed on the strip-shaped object is removed, the fluffy filler and the non-woven fabric are more easily sprung out and expanded.
Further set up: the sound insulation plate is arranged on one surface of the cavity, which is away from the sound absorption part, and the sound insulation plate is attached to one side of the metal plate, which faces the sound absorption part.
By adopting the technical scheme, the metal plate has high strength, plays a supporting role, and the sound insulation plate is used for cutting off the transmission path of sound waves.
Preferably, the surface of the corrugated board is provided with sound-transmitting holes, the surface of the corrugated board is provided with a galvanized layer, and the galvanized layer extends to the inner outline of the sound-transmitting holes.
By adopting the technical scheme, the sound transmission holes are used for transmitting sound waves into the fluffy filler in the corrugated board, so that the sound waves are absorbed by the fluffy filler and the porous structure of the non-woven fabric. The galvanized layer can keep the outer contour of the corrugated board and prolong the service life of the corrugated board.
A manufacturing method of a sound absorption and insulation board comprises the following steps:
s1: prefabricating corrugated boards, wherein two sides of each corrugated board are vertically connected with side boards;
s2: filling fluffy filler coated with non-woven fabrics into grooves of the corrugated board, and reserving the non-woven fabrics for a length in a range of 5 cm-10 cm;
s3: cutting the non-woven fabric into strips;
s4: folding the strip-shaped part of the non-woven fabric into a Z shape, and compacting the non-woven fabric;
s5: spraying water on the compacted non-woven fabric to enable the sprayed non-woven fabric surface to deviate from the ground;
s6: when the moisture is not completely evaporated, a baffle is placed on the non-woven fabric surface;
s7: pressing folded plates on two sides of the baffle plate and fixing the folded plates on the side plates;
s8: covering a sound insulation plate on one side of the two side plates away from the corrugated plate;
s9: the baffle is pulled out of the sound absorbing and insulating plate;
s10: the rod piece stretches into the sound insulation part, the rod piece stretches to the non-woven fabric, the surface layer of the non-woven fabric is poked back and forth, and the non-woven fabric is separated from each other at the water bonding part, so that the non-woven fabric becomes fluffy.
By adopting the technical scheme, after the strip-shaped folded non-woven fabric is fluffy, the outline of the strip-shaped folded non-woven fabric tends to be more curved, and the sound wave blocking capability is stronger; the detachable arrangement of the baffle provides two different sound insulation strengths; the water spray then plays the effect of being convenient for design, and after the evaporation of water, the adhesion between the two-layer non-woven fabrics that is folded reduces, is convenient for stir to the fluffy state.
In summary, the invention has the following beneficial effects:
1. whether the baffle is dismounted or not is selected according to the external noise environment; if removed, the sound insulation capability is improved.
2. The fluffy filler is used as the filler, so that the self weight of the sound absorbing and insulating plate is lighter, the acting force on the wall is small, and the wall surface is not easy to damage.
3. The galvanized layer is arranged on the surface of the corrugated board, so that the service life of the sound absorption and insulation board is prolonged.
Drawings
FIG. 1 is a schematic view of a cross-section of a sound absorbing and insulating panel according to embodiment 1;
fig. 2 is an enlarged view of a portion a in fig. 1 for embodying a nonwoven fabric structure;
fig. 3 is an enlarged view of a portion B in fig. 1 for embodying a sound-transmitting hole and a galvanized layer structure.
In the figure, 1, a sound insulation part; 2. a sound absorbing portion; 3. corrugated board; 4. fluffy filler; 5. a nonwoven fabric; 6. a baffle; 7. a side plate; 8. a folded plate; 9. a cavity; 10. a sound insulation board; 11. a metal plate; 12. a sound-transmitting hole; 13. and (5) a zinc plating layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Example 1: the sound absorption and insulation board comprises a sound absorption part 2 and a sound insulation part 1, wherein the sound absorption part 2 and the sound insulation part 1 are mutually independent and can be mutually communicated. Wherein, the sound insulation part 1 is attached to the wall surface.
As shown in fig. 1 and 2, the sound insulation part 1 and the sound absorption part 2 are separated by a detachable baffle 6, and the baffle 6 in the embodiment adopts a wire netting. The sound insulation part 1 is a cavity 9, and the sound absorption part 2 is filled with fluffy filler 4 in a compressed mode. To reduce the loosening and flocculation-off of the fluffy filler 4, the fluffy filler 4 is coated with a non-woven fabric 5. The non-woven fabric 5 tightens the fluffy filler 4, and two sides of the non-woven fabric 5 are folded towards one surface of the sound insulation part 1 facing the fluffy filler 4, and the folded parts are connected, and in the embodiment, a bonding mode is adopted. The non-woven fabric 5 is reserved with redundant parts at the bonding positions, the redundant non-woven fabric 5 is cut into strips, the strip-shaped non-woven fabric 5 is folded into a Z shape, and the folded parts of the non-woven fabric 5 are abutted against the baffle 6.
As shown in fig. 1 and 2, the side of the sound absorption part 2 facing the sound insulation part 1 is a plane, the side facing away from the wall surface is a corrugated board 3, the surface of the corrugated board 3 facing away from the sound insulation part 1 is provided with a plurality of grooves, correspondingly, the side of the corrugated board 3 facing the sound insulation part 1 is also provided with grooves, and the fluffy filler 4 is filled in the grooves of the corrugated board 3 facing the sound insulation part 1.
As shown in fig. 1 and 3, a sound-transmitting hole 12 is formed in one surface of the corrugated board 3, which is away from the sound insulation part 1, and a galvanized layer 13 is coated on the surface, and the galvanized layer 13 extends to the inner wall of the sound-transmitting hole 12, so that the corrugated board 3 is integrally protected.
As shown in fig. 1 and 2, the sound insulation part 1 comprises a cavity 9, one side of the cavity 9 is provided with a baffle 6, the other side is provided with a metal plate 11 attached to a wall surface, the metal plate 11 in the embodiment adopts a steel plate with a galvanized surface, a sound insulation plate 10 is attached to one surface of the metal plate 11 facing the sound absorption part 2, and the thickness of the sound insulation plate 10 is 3mm.
As shown in fig. 1 and 2, side plates 7 are provided at the side edge portions of the sound insulation portion 1 and the sound absorption portion 2, and a folded plate 8 is provided on a face of the side plate 7 facing the center axis of the sound insulation portion 1. The folded plate 8 is L-shaped, one edge of the folded plate 8 is attached to the side plate 7, and the other edge is parallel to the baffle 6. The folded plates 8 are symmetrically arranged on the side plates 7 at two sides, and the baffle 6 is placed on the folded plates 8 to press the non-woven fabrics 5.
The principle is as follows:
the displacement formula for acoustic wave transmission is as follows:
x=Asin（2Πft+φ）
taking a vibrating particle of sound wave as an example, the amplitude A of one particle is related to the external force, and 2n+phi is the phase. The value of sin (2n_ft+φ) is always within a constant range, which is related to amplitude A, so that the change in magnitude of A affects the transfer displacement of the vibrating particle. When the amplitude a of the vibrating particle tends to be infinite, the transfer displacement of the vibrating particle becomes small. In the environment of this document, vibration particle is in the motion process, is hindered by the solid filler after the dispersion, and the energy that carries on the vibration particle is consumed by acceleration, and amplitude A diminishes, and transmission displacement diminishes, and the distance that the sound wave can transmit diminishes, reaches the purpose of making an uproar falls.
The sound absorption and insulation board can be directly used as a building material, and the baffle 6 can be pulled out, so that the non-woven fabric 5 is fluffy and filled in the cavity 9 of the sound insulation part 1, and when sound waves are transmitted, the sound waves are blocked by the non-woven fabric 5 in a fluffy state, so that the loss in the sound wave transmission process is larger, and the effect of noise reduction is achieved.
In order to facilitate the installation of the baffle 6, the strip-shaped non-woven fabric 5 is folded, water is sprayed on the non-woven fabric 5, and after water is evaporated, the non-woven fabric 5 is shaped, so that the baffle 6 is pressed on the non-woven fabric 5. After the baffle 6 is pulled out, the non-woven fabric 5 can be restored to a fluffy filling state by only poking the non-woven fabric 5.
Example 2:
the method for dismounting the baffle 6, pressing the non-woven fabric 5 and fluffing and resetting is as follows:
s1: prefabricating corrugated boards 3, wherein two sides of the corrugated boards 3 are vertically connected with side plates 7;
s2: filling a groove of the corrugated board 3 with a fluffy filler 4 coated with a non-woven fabric 5, and reserving a section of length of the non-woven fabric 5, wherein the length range is 5 cm-10 cm;
s3: cutting the non-woven fabric 5 into strips;
s4: folding the strip-shaped part of the non-woven fabric 5 into a Z shape, and compacting the non-woven fabric 5;
s5: spraying water on the compacted non-woven fabric 5 to enable the surface of the sprayed non-woven fabric 5 to deviate from the ground;
s6: when the moisture is not completely evaporated, a baffle 6 is arranged on the surface of the non-woven fabric 5;
s7: pressing the folded plate 8 on two sides of the baffle 6 and fixing the folded plate 8 on the side plate 7;
s8: covering a sound insulation plate 10 on one side of the two side plates 7 away from the corrugated plate 3;
s9: the baffle 6 is pulled out of the sound absorbing and insulating plate 10;
s10: the rod piece stretches into the sound insulation part 1, the rod piece stretches to the non-woven fabric 5, the surface layer of the non-woven fabric 5 is poked back and forth, so that the non-woven fabric 5 is separated from each other by the water bonding part, and the non-woven fabric becomes fluffy.
The above-described embodiments are provided for illustration only and not for limitation of the present invention, and modifications may be made to the embodiments without creative contribution by those skilled in the art after reading the present specification, as long as they are protected by patent laws within the scope of claims of the present invention.
Claims (3)
1. Sound absorption and insulation board, including sound insulation part (1) and sound absorption part (2), its characterized in that: a baffle (6) is arranged between the sound insulation part (1) and the sound absorption part (2), a compressed fluffy filler (4) is filled between the sound absorption part (2) and the baffle (2), a cavity (9) is formed in one side, facing the sound absorption part (2), of the sound insulation part (1), the baffle (6) is of a detachable structure, the fluffy filler (4) in the sound insulation part (1) can expand and enter the cavity (9) of the sound insulation part (1) after the baffle (6) is detached, the sound absorption part (2) comprises a corrugated board (3), the fluffy filler (4) is filled in a groove, facing one side of the sound insulation part (1), of the corrugated board (3), a non-woven fabric (5) is wrapped outside the fluffy filler (4), and the non-woven fabric (5) is folded and contained in the groove; the non-woven fabric (5) coated by the fluffy filler (4) is folded on one side facing the sound insulation part (1); the sound insulation part (1) and the sound absorption part (2) are connected, a side plate (7) is arranged at the joint of the sound insulation part (1) and the sound absorption part (2), a folded plate (8) is arranged at one surface of the side plate (7) facing the central axis of the sound insulation part (1), the folded plate (8) is arranged in an L shape, one right-angle side of the folded plate (8) is parallel to the sound insulation part (1), and the baffle (6) is arranged between the right-angle side and the sound absorption part (2); the folding part of the non-woven fabric (5) is arranged in a strip shape, and the strip-shaped part of the non-woven fabric (5) is folded in a Z shape;
the manufacturing method of the sound absorption and insulation plate comprises the following steps: s1: prefabricating corrugated boards, wherein two sides of each corrugated board are vertically connected with side boards; s2: filling fluffy filler coated with non-woven fabrics into grooves of the corrugated board, and reserving the non-woven fabrics for a length in a range of 5 cm-10 cm; s3: cutting the non-woven fabric into strips; s4: folding the strip-shaped part of the non-woven fabric into a Z shape, and compacting the non-woven fabric; s5: spraying water on the compacted non-woven fabric to enable the sprayed non-woven fabric surface to deviate from the ground; s6: when the moisture is not completely evaporated, a baffle is placed on the non-woven fabric surface; s7: pressing folded plates on two sides of the baffle plate and fixing the folded plates on the side plates; s8: covering a sound insulation plate on one side of the two side plates away from the corrugated plate; s9: the baffle is pulled out of the sound absorbing and insulating plate; s10: the rod piece stretches into the sound insulation part, the rod piece stretches to the non-woven fabric, the surface layer of the non-woven fabric is poked back and forth, and the non-woven fabric is separated from each other at the water bonding part, so that the non-woven fabric becomes fluffy.
2. The sound absorbing and insulating panel according to claim 1, wherein: the sound-absorbing device is characterized in that a metal plate (11) is arranged on one surface of the cavity (9) away from the sound-absorbing part (2), and a sound-insulating plate (10) is attached to one side of the metal plate (11) facing the sound-absorbing part (2).
3. The sound absorbing and insulating panel according to claim 1, wherein: the surface of corrugated board (3) is equipped with sound transmission hole (12), corrugated board (3) surface is equipped with galvanized layer (13), galvanized layer (13) extend to the interior profile department of sound transmission hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861782.1A CN107700686B (en) | 2017-09-21 | 2017-09-21 | Sound absorption and insulation board and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861782.1A CN107700686B (en) | 2017-09-21 | 2017-09-21 | Sound absorption and insulation board and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107700686A CN107700686A (en) | 2018-02-16 |
| CN107700686B true CN107700686B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710861782.1A Active CN107700686B (en) | 2017-09-21 | 2017-09-21 | Sound absorption and insulation board and manufacturing method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE891548A (en) * | 1980-12-22 | 1982-04-16 | Gruenzweig & Hartmann Montage | MOBILE SOUNDPROOFING PANEL AND METHOD FOR THE PRODUCTION THEREOF |
| CN1352719A (en) * | 1999-06-09 | 2002-06-05 | 陶氏化学公司 | Sound insulating sandwich element |
| CN101858060A (en) * | 2010-06-22 | 2010-10-13 | 张家港港丰交通安全设施有限公司 | Dentoid panel double-cavity sound absorption and insulation screen |
| CN202658756U (en) * | 2012-05-04 | 2013-01-09 | 薛小民 | Sound absorption material |
| CN104481104A (en) * | 2014-11-19 | 2015-04-01 | 中国测试技术研究院声学研究所 | Indoor sound absorption jet drawing trim plate for dwelling house |
| CN105672507A (en) * | 2016-02-17 | 2016-06-15 | 江苏瑞赛恩建材实业有限公司 | Environment-friendly sound absorbing board |
| CN105908999A (en) * | 2016-04-21 | 2016-08-31 | 孙小燕 | Adjustable sound isolation prefab house and sound isolation adjusting method thereof |
| CN207660122U (en) * | 2017-09-21 | 2018-07-27 | 江苏声立方环保科技有限公司 | Felt |
-
2017
- 2017-09-21 CN CN201710861782.1A patent/CN107700686B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE891548A (en) * | 1980-12-22 | 1982-04-16 | Gruenzweig & Hartmann Montage | MOBILE SOUNDPROOFING PANEL AND METHOD FOR THE PRODUCTION THEREOF |
| CN1352719A (en) * | 1999-06-09 | 2002-06-05 | 陶氏化学公司 | Sound insulating sandwich element |
| CN101858060A (en) * | 2010-06-22 | 2010-10-13 | 张家港港丰交通安全设施有限公司 | Dentoid panel double-cavity sound absorption and insulation screen |
| CN202658756U (en) * | 2012-05-04 | 2013-01-09 | 薛小民 | Sound absorption material |
| CN104481104A (en) * | 2014-11-19 | 2015-04-01 | 中国测试技术研究院声学研究所 | Indoor sound absorption jet drawing trim plate for dwelling house |
| CN105672507A (en) * | 2016-02-17 | 2016-06-15 | 江苏瑞赛恩建材实业有限公司 | Environment-friendly sound absorbing board |
| CN105908999A (en) * | 2016-04-21 | 2016-08-31 | 孙小燕 | Adjustable sound isolation prefab house and sound isolation adjusting method thereof |
| CN207660122U (en) * | 2017-09-21 | 2018-07-27 | 江苏声立方环保科技有限公司 | Felt |
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| Publication number | Publication date |
|---|---|
| CN107700686A (en) | 2018-02-16 |
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