CN214833648U - Polyester fiber flame-retardant acoustic board - Google Patents
Polyester fiber flame-retardant acoustic board Download PDFInfo
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- CN214833648U CN214833648U CN202022731694.XU CN202022731694U CN214833648U CN 214833648 U CN214833648 U CN 214833648U CN 202022731694 U CN202022731694 U CN 202022731694U CN 214833648 U CN214833648 U CN 214833648U
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- polyester fiber
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- retardant
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 40
- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 229920000728 polyester Polymers 0.000 title claims abstract description 37
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000005030 aluminium foil Substances 0.000 claims abstract description 13
- 239000011111 cardboard Substances 0.000 claims abstract description 13
- 238000005336 cracking Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 229920000098 polyolefin Polymers 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 239000004945 silicone rubber Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000011087 paperboard Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 229920006327 polystyrene foam Polymers 0.000 claims description 3
- 229920000260 silastic Polymers 0.000 claims description 3
- 229920000297 Rayon Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 235000019504 cigarettes Nutrition 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 58
- 239000000126 substance Substances 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000004795 extruded polystyrene foam Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
The utility model discloses a polyester fiber flame-retardant acoustic board in the field of acoustic boards, which comprises an outer guard plate, wherein one side of the outer guard plate is fixedly connected with a polyester fiber gauze layer, one side of the polyester fiber gauze layer, which is away from the outer guard plate, is provided with an acoustic board body, and a corner anti-cracking bolt is arranged inside the outer guard plate; the utility model discloses in, through outside at the abatvoix body set up outer casing and polyester fiber gauze layer, improve high temperature stability and improve low temperature crack resistance, through setting up the aluminium foil cardboard, the cooperation of diatom mud bottom and high resilience silastic-layer is used, the fire resistance of abatvoix has been improved, some harmful gas can also be adsorbed, current abatvoix has been solved because the material can slowly age in the air, its sound absorbing effect can reduce gradually along with time under long-time the use, and there is the potential safety hazard in the aspect of fire resistance and moisture resistance in current abatvoix, the volume of cigarette that goes out after meeting the fire is great, can't prevent the problem that the fire source further spreads.
Description
Technical Field
The utility model relates to an abatvoix field specifically is a fire-retardant abatvoix of polyester fiber.
Background
The sound absorption board is an ideal sound absorption decorative material, and has the advantages of sound absorption, environmental protection, flame retardance, heat insulation, heat preservation, moisture prevention, mildew prevention, easy dust removal, easy cutting, splicing, simple construction, good stability, good shock resistance, good independence, high cost performance and the like, can be selected by various colors, can meet the sound absorption decoration requirements of different styles and levels, and is used for sound absorption textile factories and sound absorption wallboards and ceiling boards of large public buildings in acoustic places such as theaters, music halls, movie theaters, recording rooms, studio studios, monitoring rooms, conference rooms, gymnasiums, exhibition halls and dance halls, family movie and television hall factories, silent rooms, courts, report halls, auditorium and other acoustic places with over-standard noise.
The existing sound-absorbing board is slowly aged in the air due to the materials, the sound-absorbing effect of the existing sound-absorbing board can be gradually reduced along with the time when the sound-absorbing board is used for a long time, potential safety hazards exist in the aspects of fire resistance and moisture resistance, the smoke output after fire is met is large, the fire source cannot be prevented from further spreading, the requirements of consumers cannot be met, and the benefits of the consumers cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fire-retardant abatvoix of polyester fiber to propose current abatvoix in solving above-mentioned background art because the material can slowly age in the air, its sound absorbing effect can reduce gradually along with time under long-time the use, and there is the potential safety hazard in the aspect of fire resistance and humidity resistance in current abatvoix, and the play cigarette volume after meeting the fire is great, can't prevent the problem that the fire source further stretchs.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a fire-retardant abatvoix of polyester fiber, includes the outer casing, one side fixedly connected with polyester fiber gauze layer of outer casing, one side that the outer casing was kept away from on polyester fiber gauze layer is provided with the abatvoix body, the inside of outer casing is provided with the corner crack control bolt, the bottom of sound-absorbing membrane is provided with fire-retardant layer, fire-retardant layer includes aluminium foil cardboard, diatom mud bottom and high resilience silastic-layer, the bottom fixedly connected with density sheet layer on fire-retardant layer, the bottom on density sheet layer is provided with the epoxy waterproof layer, one side fixedly connected with support shaped steel that density sheet layer was kept away from on fire-retardant layer, the bottom of supporting shaped steel is provided with the chafing strip.
As a further aspect of the present invention: the top fixedly connected with fixed block of corner crack control bolt, the quantity of fixed block sets up to four, through setting up the fixed block, avoids the corner crack control bolt phenomenon that drops to appear, makes the corner be difficult for being destroyed, has improved the practicality of this device.
As a further aspect of the present invention: the bottom fixedly connected with sound absorbing membrane of abatvoix body, the material of sound absorbing membrane sets up to polyurethane, sets up to polyurethane through the material to the sound absorbing membrane, and it has the function of absorption, degradation low frequency noise, takes place a series of damping, reflection, friction with the material, converts acoustic energy into heat energy consumption to reach the efficiency of inhaling the sound.
As a further aspect of the present invention: the bottom of the epoxy resin waterproof layer is provided with the anti-skid nails, one sides of the anti-skid nails, which are far away from the epoxy resin waterproof layer, are provided with the fireproof cotton pads, so that the flame-retardant and fireproof performance of the sound-absorbing board body is improved, the sound-absorbing board can absorb heat at or close to a firing temperature and decompose into non-combustible substances, and the non-combustible substances can be produced by reaction with foam combustion products; so as to delay the combustion and prevent the smoke from causing the self-extinguishing of the ignition part, reduce the pollution to the environment and reduce the emission of harmful substances.
As a further aspect of the present invention: the bottom of the sound-absorbing board body is fixedly connected with a polyolefin microporous film, a nylon braid is arranged at the bottom of the polyolefin microporous film, and the nylon braid is arranged, so that the sound-absorbing board can be better in elasticity and wear resistance under dry and wet conditions, has small shrinkage rate, and has the characteristics of stiffness, difficulty in buckling, easiness in washing and quick drying.
As a further aspect of the present invention: one side that polyester fiber gauze layer was kept away from to the abatvoix body is provided with the viscose layer, polyester fiber gauze layer is fire-retardant type extrusion molding polystyrene foam insulation board, is fire-retardant type extrusion molding polystyrene foam insulation board through setting up polyester fiber gauze layer, is the environment-friendly insulation material who has beneficial properties such as the heat conductivity is low, high resistance to compression, dampproofing, ventilative, do not absorb water, matter is light, corrosion-resistant, long service life.
As a further aspect of the present invention: the aluminium foil cardboard is located one side of diatom mud bottom, the diatom mud bottom is kept away from the high silicone rubber layer that kick-backs of one side fixedly connected with of aluminium foil cardboard, uses through the cooperation that sets up aluminium foil cardboard, diatom mud bottom and high silicone rubber layer that kick-backs, has improved the fire resistance of abatvoix, can give sound insulation and fall and make an uproar, can also adsorb some harmful gas.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, through outside at the abatvoix body set up outer casing and polyester fiber gauze layer, improve high temperature stability and improve low temperature crack resistance, through setting up the aluminium foil cardboard, the cooperation of diatom mud bottom and high resilience silastic-layer is used, the fire resistance of abatvoix has been improved, can give sound insulation and fall and make an uproar, some harmful gas can also be adsorbed, current abatvoix has been solved because the material can slowly age in the air, its sound absorption effect can reduce gradually along with time under long-time the use, and there is the potential safety hazard in the aspect of fire resistance and humidity resistance in current abatvoix, the play cigarette volume after the fire meets is great, can't prevent the problem that the fire source further spreads.
2. In the utility model, the fixed block is arranged, so that the corner anti-cracking bolt is prevented from falling off, the corner is not easy to be damaged, and the practicability of the device is improved; the sound absorption film is made of polyurethane, so that the sound absorption film has the functions of absorbing and degrading low-frequency noise, has a series of damping, reflecting and rubbing effects with materials, and converts sound energy into heat energy to be consumed, thereby achieving the effect of sound absorption; the fireproof cotton pad is arranged, so that the flame-retardant and fireproof performance of the sound-absorbing board body is improved, the sound-absorbing board body can absorb heat and decompose into non-combustible substances at or close to a firing temperature, and the non-combustible substances can be produced by reaction with foam combustion products; so as to delay the combustion and prevent the smoke from causing the self-extinguishing of the ignition part, reduce the pollution to the environment and reduce the emission of harmful substances.
3. In the utility model, by arranging the nylon braid, the elasticity and the wear resistance of the fabric can be better under dry and wet conditions, and the fabric has the characteristics of small shrinkage rate, stiff and straight, difficult creasing, easy washing and quick drying; the polyester fiber gauze layer is arranged to be the flame-retardant extruded polystyrene foam insulation board, so that the environment-friendly insulation board is an environment-friendly insulation material with beneficial performances of low thermal conductivity, high compression resistance, moisture resistance, air impermeability, water impermeability, light weight, corrosion resistance, long service life and the like; through the cooperation that sets up aluminium foil cardboard, diatom mud bottom and high resilience silastic-layer, improved the fire resistance of abatvoix, can give sound insulation and fall and make an uproar, can also adsorb some harmful gas.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the outer guard plate of the present invention;
FIG. 3 is a schematic view of the internal structure of the flame retardant layer of the present invention;
fig. 4 is a schematic view of a part of an enlarged structure at a in fig. 1 according to the present invention.
In the figure: 1. an outer shroud; 2. a polyester fiber gauze layer; 3. a sound-absorbing panel body; 4. a sound absorbing film; 5. anti-cracking bolts at the corners; 6. a flame retardant layer; 7. an aluminum foil paperboard; 8. a diatom ooze bottom layer; 9. a high resilience silicone rubber layer; 10. a density board layer; 11. an epoxy resin waterproof layer; 12. anti-skid nails; 13. supporting the section steel; 14. an anti-rub strip; 15. a fire-proof cotton pad; 16. a fixed block; 17. a polyolefin microporous membrane; 18. nylon woven tape.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the present invention, a polyester fiber flame retardant sound absorption board includes an outer protection board 1, one side of the outer protection board 1 is fixedly connected with a polyester fiber gauze layer 2, one side of the polyester fiber gauze layer 2, which is away from the outer protection board 1, is provided with a sound absorption board body 3, the inside of the outer protection board 1 is provided with a corner anti-cracking bolt 5, the bottom of a sound absorption film 4 is provided with a flame retardant layer 6, the flame retardant layer 6 includes an aluminum foil paper board 7, a diatom ooze bottom layer 8 and a high resilience silicone rubber layer 9, the bottom of the flame retardant layer 6 is fixedly connected with a density board layer 10, the bottom of the density board layer 10 is provided with an epoxy resin waterproof layer 11, one side of the flame retardant layer 6, which is away from the density board layer 10, is fixedly connected with a support section steel 13, and the bottom of the support section steel 13 is provided with an anti-rubbing strip 14; the utility model discloses in, through outside at abatvoix body 3 set up outer casing 1 and polyester fiber gauze layer 2, improve high temperature stability and improve low temperature crack resistance nature, through setting up aluminium foil cardboard 7, diatom mud bottom 8 and high resilience silastic-layer 9's cooperation is used, the fire resistance of abatvoix has been improved, can give sound insulation and fall noise, can also adsorb some harmful gas, current abatvoix has been solved because the material can slowly age in the air, its sound absorption effect can reduce gradually along with time under long-time the use, and there is the potential safety hazard in the aspect of fire resistance and humidity resistance in current abatvoix, the volume of cigarette that goes out after meeting the fire is great, can't prevent the problem that the fire source further spreads.
The fixed blocks 16 are fixedly connected to the tops of the corner anti-cracking bolts 5, the number of the fixed blocks 16 is four, and the corner anti-cracking bolts 5 are prevented from falling off by the aid of the fixed blocks 16, so that corners are not easily damaged, and the practicability of the device is improved; the bottom of the sound-absorbing plate body 3 is fixedly connected with a sound-absorbing film 4, the sound-absorbing film 4 is made of polyurethane, the sound-absorbing film has the functions of absorbing and degrading low-frequency noise, and has a series of damping, reflecting and rubbing effects with materials to convert sound energy into heat energy for consumption, so that the sound-absorbing effect is achieved; the bottom of the epoxy resin waterproof layer 11 is provided with the anti-skid nails 12, one side of the anti-skid nails 12, which is far away from the epoxy resin waterproof layer 11, is provided with the fireproof cotton pad 15, so that the flame-retardant and fireproof performance of the sound-absorbing board body 3 is improved, the sound-absorbing board can absorb heat and decompose into non-combustible substances at or close to an ignition temperature, and the non-combustible substances can be produced by reacting with foam combustion products; so as to delay the combustion and prevent the smoke from causing the self-extinguishing of the ignition part, reduce the pollution to the environment and reduce the emission of harmful substances.
The bottom of the sound-absorbing board body 3 is fixedly connected with a polyolefin microporous film 17, the bottom of the polyolefin microporous film 17 is provided with a nylon woven tape 18, and the nylon woven tape 18 is arranged, so that the sound-absorbing board can be better in elasticity and wear resistance under dry and wet conditions, and has the characteristics of small shrinkage, stiffness, difficulty in creasing, easiness in washing and quick drying; the side, far away from the polyester fiber gauze layer 2, of the sound absorption plate body 3 is provided with the adhesive layer, the polyester fiber gauze layer 2 is a flame-retardant extruded polystyrene foam heat insulation plate, and the polyester fiber gauze layer 2 is a flame-retardant extruded polystyrene foam heat insulation plate, so that the sound absorption plate is an environment-friendly heat insulation material with beneficial performances of low heat conductivity, high compression resistance, moisture resistance, air impermeability, no water absorption, light weight, corrosion resistance, long service life and the like; aluminium foil cardboard 7 is located one side of diatom mud bottom 8, and diatom mud bottom 8 keeps away from one side fixedly connected with height resilience silastic layer 9 of aluminium foil cardboard 7, uses through the cooperation that sets up aluminium foil cardboard 7, diatom mud bottom 8 and height resilience silastic layer 9, has improved the fire resistance of abatvoix, can give sound insulation and fall and make an uproar, can also adsorb some harmful gas.
The utility model discloses a theory of operation is: in the working process, the outer guard plate 1 and the polyester fiber gauze layer 2 are arranged outside the sound-absorbing plate body 3, the high-temperature stability and the low-temperature crack resistance are improved, the high-temperature stability is improved due to the three-dimensional distribution of polyester fiber monofilaments, the sound-absorbing film 4 is made of polyurethane, the sound-absorbing film has the functions of absorbing and degrading low-frequency noise, and has a series of damping, reflecting and friction effects with materials, so that sound energy is converted into heat energy to be consumed, the sound-absorbing effect is achieved, the stability of the structure of the device is improved by matching the fixing block 16 with the corner anti-cracking bolt 5, the device is not easy to damage, the flame-retardant layer 6 is arranged, the flame-retardant layer 6 is matched with the paperboard aluminum foil 7, the diatom ooze bottom layer 8 and the high-resilience silicone rubber layer 9, the diatom ooze bottom layer 8 has good flame retardance, sound insulation and noise reduction are realized, and harmful gases can be adsorbed, and diatom mud bottom 8 has good hydroscopicity, when inside moist, diatom mud's micropore can inhale into the deposit with the hydrone in the air, rethread high resilience silastic-layer 9, because of it has good resilience and travelling comfort, also have certain flame retardant efficiency simultaneously, through setting up fireproof cotton pad 15, the fire behaviour of abatvoix body 3 fire prevention has been improved, can absorb heat and decompose into incombustible material under firing temperature or being close to firing temperature, can produce incombustible material with the foam combustion product reaction, at last through setting up polyolefin microporous membrane 17, the effect and the ageing resistance of inhaling the sound have further been improved, consumer's demand has been satisfied then, consumer's interests have been ensured.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a polyester fiber fire-retardant abatvoix, includes outer jacket (1), its characterized in that: one side of the outer guard board (1) is fixedly connected with a polyester fiber gauze layer (2), the side of the polyester fiber gauze layer (2) far away from the outer guard plate (1) is provided with a sound-absorbing plate body (3), corner anti-cracking bolts (5) are arranged inside the outer guard plate (1), a sound absorption film (4) is fixedly connected to the bottom of the sound absorption plate body (3), the bottom of the sound absorption film (4) is provided with a flame-retardant layer (6), the flame-retardant layer (6) comprises an aluminum foil paper board (7), a diatom ooze bottom layer (8) and a high-resilience silicone rubber layer (9), the bottom of the flame-retardant layer (6) is fixedly connected with a density board layer (10), the bottom of the density board layer (10) is provided with an epoxy resin waterproof layer (11), one side fixedly connected with of density board layer (10) is kept away from in fire-retardant layer (6) supports shaped steel (13), the bottom that supports shaped steel (13) is provided with chafing strip (14).
2. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: the top fixedly connected with fixed block (16) of corner crack control bolt (5), the quantity of fixed block (16) sets up to four.
3. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: the sound absorption film (4) is made of polyurethane.
4. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: the anti-skid device is characterized in that anti-skid nails (12) are arranged at the bottom of the epoxy resin waterproof layer (11), and a fireproof cotton pad (15) is arranged on one side, away from the epoxy resin waterproof layer (11), of the anti-skid nails (12).
5. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: the bottom of the sound-absorbing board body (3) is fixedly connected with a polyolefin microporous film (17), and a nylon woven tape (18) is arranged at the bottom of the polyolefin microporous film (17).
6. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: one side that polyester fiber gauze layer (2) were kept away from in abatvoix body (3) is provided with the viscose layer, polyester fiber gauze layer (2) are fire-retardant type extrusion molding polystyrene foam insulation board.
7. The polyester fiber flame retardant sound absorbing sheet according to claim 1, wherein: aluminium foil cardboard (7) are located one side of diatom mud bottom (8), one side fixedly connected with high resilience silastic layer (9) of aluminium foil cardboard (7) are kept away from to diatom mud bottom (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022731694.XU CN214833648U (en) | 2020-11-23 | 2020-11-23 | Polyester fiber flame-retardant acoustic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022731694.XU CN214833648U (en) | 2020-11-23 | 2020-11-23 | Polyester fiber flame-retardant acoustic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214833648U true CN214833648U (en) | 2021-11-23 |
Family
ID=78757610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022731694.XU Expired - Fee Related CN214833648U (en) | 2020-11-23 | 2020-11-23 | Polyester fiber flame-retardant acoustic board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214833648U (en) |
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2020
- 2020-11-23 CN CN202022731694.XU patent/CN214833648U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |