CN214144275U - Aluminum veneer curtain wall with fireproof effect - Google Patents
Aluminum veneer curtain wall with fireproof effect Download PDFInfo
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- CN214144275U CN214144275U CN202022306853.1U CN202022306853U CN214144275U CN 214144275 U CN214144275 U CN 214144275U CN 202022306853 U CN202022306853 U CN 202022306853U CN 214144275 U CN214144275 U CN 214144275U
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- curtain wall
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- 230000000694 effects Effects 0.000 title claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 41
- 230000002265 prevention Effects 0.000 claims abstract description 34
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000004411 aluminium Substances 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 24
- 239000011490 mineral wool Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 18
- 239000003973 paint Substances 0.000 claims description 18
- 229920000297 Rayon Polymers 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 4
- 238000005034 decoration Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 123
- 238000009434 installation Methods 0.000 description 15
- 239000012790 adhesive layer Substances 0.000 description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005254 chromizing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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Abstract
The utility model discloses an aluminium veneer curtain with fire prevention effect, its technical scheme main points are: including the curtain body, the curtain body comprises aluminum alloy base layer, buffer layer, storing up powder layer, fire prevention puigging, decorative layer, the mounting groove has been seted up in aluminum alloy base layer's front, four corners homogeneous style of aluminum alloy base layer are connected with the connecting block, the front of connecting block all sets up threaded hole, the equal threaded connection in inside of screw hole has fastening bolt, the inside fixedly connected with buffer layer of mounting groove, the top fixedly connected with fire prevention puigging of buffer layer, the top fixedly connected with storing up powder layer of fire prevention puigging, the top spraying of storing up powder layer has the decorative layer. Set up the cavity, the inside packing of cavity has the fire extinguishing agent dry powder, and when meetting conflagration or high temperature condition, the shell on storing up the powder layer is destroyed by high temperature, and the fire extinguishing agent dry powder in the cavity will spill to play certain fire extinguishing effect.
Description
Technical Field
The utility model relates to an aluminium veneer curtain field, in particular to aluminium veneer curtain with fire prevention effect.
Background
The curtain wall is the outer wall enclosure of the building, does not bear the weight, hangs like a curtain, so is also called as a curtain wall, and is a light wall with decorative effect commonly used by modern large-scale and high-rise buildings. The aluminum veneer curtain wall is a novel curtain wall material which is formed by adopting a high-quality aluminum alloy plate as a base material and then carrying out numerical control bending and other technologies and spraying decorative paint on the surface. The aluminum veneer is a building decoration material which is processed and formed by adopting fluorocarbon spraying technology after chromizing and other treatments. The fluorocarbon coating mainly comprises polyvinylidene fluoride resin, and is divided into three types of priming paint, finishing paint and varnish. The spraying process is generally classified as two, three or four coats. The fluorocarbon coating has excellent corrosion resistance and weather resistance, can resist acid rain, salt mist and various air pollutants, has excellent cold and heat resistance, can resist the irradiation of strong ultraviolet rays, can keep colorfast and not chalking for a long time, and has long service life.
Common aluminium veneer curtain does not possess the function of fire prevention on the market at present, and when the conflagration took place, aluminium veneer curtain burning can cause great danger, and common aluminium veneer curtain installation is more loaded down with trivial details, and is inconvenient to install, is unfavorable for the use.
SUMMERY OF THE UTILITY MODEL
To the problem of mentioning in the background art, the utility model aims at providing an aluminium veneer curtain with fire prevention effect to solve the problem of mentioning in the background art.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides an aluminium veneer curtain with fire prevention effect, includes the curtain body, the curtain body comprises aluminum alloy basic unit, buffer layer, storing up the powder layer, fire prevention puigging, decorative layer, the mounting groove has been seted up in aluminum alloy basic unit's front, four corners homogeneous style of aluminum alloy basic unit are connected with the connecting block, the front of connecting block all sets up threaded hole, the equal threaded connection in inside of screw hole has fastening bolt, the inside fixedly connected with buffer layer of mounting groove, the top fixedly connected with fire prevention puigging of buffer layer, the top fixedly connected with storing up the powder layer of fire prevention puigging, the top spraying of storing up the powder layer has the decorative layer.
Through adopting above-mentioned technical scheme, set up aluminum alloy basic unit, aluminum alloy basic unit provides mounting substrate for the curtain body, the mounting groove that aluminum alloy basic unit's top was seted up is used for holding other each layer, other each layer is all installed in the mounting groove, and guarantee the same with the height of mounting groove, thereby constitute the curtain body, make the curtain body have the fire prevention, give sound insulation, jar-proof effect, set up the connecting block, the connecting block is used for making things convenient for this curtain body to install with the wall, make it have the effect of making things convenient for the dismouting.
Preferably, the damping layer comprises an upper connecting plate, a lower connecting plate and damping springs, a plurality of groups of damping springs are fixedly connected to the top of the lower connecting plate, the other ends of the damping springs are fixedly connected with the upper connecting plate, and the connecting plates are mutually symmetrical.
Through adopting above-mentioned technical scheme, set up the buffer layer, the buffer layer comprises upper junction plate, lower connecting plate, damping spring, and the upper junction plate can be so that the buffer layer is better to be connected with fire prevention puigging and aluminum alloy basic unit with lower connecting plate, and damping spring can disperse, reduce the impact force that the curtain body received to guarantee the security of curtain body.
Preferably, a cavity is formed in the powder storage layer, and the fire extinguishing agent dry powder is filled in the cavity.
Through adopting above-mentioned technical scheme, set up the cavity, the inside packing of cavity has the fire extinguishing agent dry powder, and when meetting conflagration or high temperature condition, the shell of storing up the powder layer is destroyed by high temperature, and the fire extinguishing agent dry powder in the cavity will spill to play certain fire extinguishing effect.
Preferably, the fireproof sound insulation layer is composed of a fireproof rock wool board and a sound insulation board, and the fireproof rock wool board is bonded to the top of the sound insulation board.
Through adopting above-mentioned technical scheme, set up the acoustic celotex board, the acoustic celotex board can play the effect of absorption noise reduction to through the whole syllable-dividing effect of curtain body, fire prevention rock wool board is located skin, and fire prevention rock wool board has high temperature resistant, characteristics such as incombustible, and after the conflagration took place, fire prevention rock wool board can effectually resist high temperature, thereby the fire behavior of guarantee curtain body.
Preferably, the decorative layer consists of a fireproof paint layer and a decorative pattern layer, and the top of the fireproof paint layer is sprayed with the decorative pattern layer.
Through adopting above-mentioned technical scheme, set up the fire prevention paint layer, the fire prevention paint layer is located the outside of curtain body, plays the fire prevention effect of first layer when meetting high temperature, sets up the decorative pattern layer, and the decorative pattern layer is located the outside of curtain body, plays the effect of guaranteeing the whole aesthetic property of curtain body.
Preferably, the back of the connecting block is bonded with an adhesive layer, and the back of the adhesive layer is bonded with release paper.
Through adopting above-mentioned technical scheme, set up the viscose layer, the viscose layer is used for consolidating the relation of connection between connecting block and the wall for outside detaching being connected between screw hole and the fastening bolt, area of contact between increase connecting block that the viscose layer can be further and the wall, thereby make the installation more stable, set up from type paper, play from type paper when not installing the curtain body, avoid the viscose layer to take place the adhesion with other article.
Preferably, the height of the mounting groove is matched with the height formed by combining the shock absorption layer, the powder storage layer, the fireproof sound insulation layer and the decorative layer, and glue is filled in the inner gap of the mounting groove.
Through adopting above-mentioned technical scheme, the height and other each layer of mounting groove make up high phase-match for the surface smoothness of curtain body can not appear sunken or outstanding condition, sets up glue, and glue fills space department, can improve the mounting groove inside and the connection compactness between each layer, in order to avoid appearing not hard up condition.
To sum up, the utility model discloses mainly have following beneficial effect:
firstly, an aluminum alloy base layer is arranged, the aluminum alloy base layer provides an installation substrate for a curtain wall body, an installation groove formed in the top of the aluminum alloy base layer is used for accommodating other layers, all other layers are installed in the installation groove, and the height of the installation groove is ensured to be the same as that of the installation groove, so that the curtain wall body is formed, a connecting block is arranged, the connecting block is used for facilitating the installation of the curtain wall body and a wall, the curtain wall body has the function of facilitating the disassembly and assembly, a viscose layer is arranged and used for reinforcing the connection relation between the connecting block and the wall, so that the contact area between the connecting block and the wall can be further increased by the viscose layer except the connection between a threaded hole and a fastening bolt, so that the installation is more stable, release paper is arranged, and when the release paper is used for not installing the curtain wall body, the adhesion between the viscose layer and other articles is avoided;
secondly, a cavity is arranged, fire extinguishing agent dry powder is filled in the cavity, when a fire disaster or a high-temperature condition occurs, the shell of the powder storage layer is damaged by high temperature, the fire extinguishing agent dry powder in the cavity can be spilled out, so that a certain fire extinguishing effect is achieved, the fireproof rock wool board is arranged and is positioned on the outer layer, the fireproof rock wool board has the characteristics of high temperature resistance, non-flammability and the like, after the fire disaster occurs, the fireproof rock wool board can effectively resist the high temperature, so that the fire resistance of the curtain wall body is guaranteed, the fireproof paint layer is arranged, the fireproof paint layer is positioned on the outer side of the curtain wall body, and the fireproof effect of the first layer is achieved when the fire disaster occurs;
third, set up the buffer layer, the buffer layer is by the upper junction plate, the lower connecting plate, damping spring constitutes, the upper junction plate can make the better and fireproof sound-proof layer and the aluminum alloy basic unit of buffer layer be connected with lower connecting plate, damping spring can disperse the impact force that the curtain body received, reduce, with the security of guaranteeing the curtain body, set up the acoustic celotex board, the acoustic celotex board can play the effect of absorption noise reduction, thereby whole sound insulation effect through the curtain body, set up the decorative pattern layer, the decorative pattern layer is located the outside of curtain body, play the effect of guaranteeing the whole aesthetic property of curtain body.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a front view of the present invention;
fig. 3 is an enlarged view of the layer structure of the present invention.
Reference numerals: 1. a curtain wall body; 2. an aluminum alloy base layer; 3. a shock-absorbing layer; 4. a powder storage layer; 5. a fire-proof sound-proof layer; 6. a decorative layer; 7. mounting grooves; 8. connecting blocks; 9. a threaded hole; 10. fastening a bolt; 301. an upper connecting plate; 302. a lower connecting plate; 303. a damping spring; 401. a cavity; 402. dry powder of fire extinguishing agent; 501. fireproof rock wool boards; 502. a sound insulating board; 601. a fireproof paint layer; 602. a decorative pattern layer; 11. an adhesive layer; 12. and (4) release paper.
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.
Examples
Referring to fig. 1-3, an aluminium veneer curtain with fire prevention effect, including curtain body 1, curtain body 1 comprises aluminum alloy basic unit 2, buffer layer 3, powder storage layer 4, fire prevention puigging 5, decorative layer 6, mounting groove 7 has been seted up in aluminum alloy basic unit 2's front, four corners homogeneous style of aluminum alloy basic unit 2 are connected with connecting block 8, threaded hole 9 has all been seted up in connecting block 8's front, the equal threaded connection in inside of threaded hole 9 has fastening bolt 10, the inside fixedly connected with buffer layer 3 of mounting groove 7, the top fixedly connected with fire prevention puigging 5 of buffer layer 3, the top fixedly connected with powder storage layer 4 of fire prevention puigging 5, the top spraying of powder storage layer 4 has decorative layer 6.
Referring to fig. 3, for the purpose of improving the shock absorption of the curtain wall; the damping layer 3 consists of an upper connecting plate 301, a lower connecting plate 302 and damping springs 303, the top of the lower connecting plate 302 is fixedly connected with a plurality of groups of damping springs 303, the other ends of the damping springs 303 are fixedly connected with the upper connecting plate 301, and the connecting plates are mutually symmetrical; set up buffer layer 3, buffer layer 3 comprises upper junction plate 301, lower connecting plate 302, damping spring 303, and upper junction plate 301 can be so that buffer layer 3 is better to be connected with fire prevention puigging 5 and aluminum alloy based layer 2 with lower connecting plate 302, and damping spring 303 can disperse, reduce the impact force that curtain body 1 received to guarantee the security of curtain body 1.
Referring to fig. 3, in order to achieve the purpose of making the curtain wall have a certain fire extinguishing function; a cavity 401 is formed inside the powder storage layer 4, and fire extinguishing agent dry powder 402 is filled inside the cavity 401; the cavity 401 is arranged, the fire extinguishing agent dry powder 402 is filled in the cavity 401, when a fire disaster or a high-temperature condition occurs, the shell of the powder storage layer 4 is damaged by high temperature, and the fire extinguishing agent dry powder 402 in the cavity 401 can be spilled out, so that a certain fire extinguishing effect is achieved.
Referring to fig. 3, in order to achieve the purpose of making the curtain wall have the sound-insulating and fire-proof functions; the fireproof sound insulation layer 5 consists of a fireproof rock wool board 501 and a sound insulation board 502, and the fireproof rock wool board 501 is bonded to the top of the sound insulation board 502; set up acoustic celotex board 502, acoustic celotex board 502 can play the effect of absorption noise reduction to through the whole syllable-dividing effect of curtain body 1, fire prevention rock wool board 501 is located skin, and fire prevention rock wool board 501 has high temperature resistant, characteristics such as nonflammable, after the conflagration takes place, fire prevention rock wool board 501 can effectually resist high temperature, thereby guarantee curtain body 1's fire behavior.
With reference to fig. 3, for the purpose of making the curtain wall aesthetically appealing; the decorative layer 6 consists of a fireproof paint layer 601 and a decorative pattern layer 602, and the top of the fireproof paint layer 601 is sprayed with the decorative pattern layer 602; set up fire prevention paint layer 601, fire prevention paint layer 601 is located curtain body 1's the outside, plays the fire prevention effect of first layer when meetting high temperature, sets up decorative pattern layer 602, and decorative pattern layer 602 is located curtain body 1's the outside, plays the effect of guaranteeing the whole aesthetic property of curtain body 1.
Referring to fig. 1, for the purpose of enhancing the stability of the curtain wall at the installation place with the wall; the back of each connecting block 8 is bonded with an adhesive layer 11, and the back of each adhesive layer 11 is bonded with release paper 12; set up viscose layer 11, viscose layer 11 is used for consolidating the relation of connection between connecting block 8 and the wall for outside detaching being connected between screw hole 9 and fastening bolt 10, area of contact between connecting block 8 and the wall that increases that viscose layer 11 can be further, thereby make the installation more stable, set up from type paper 12, play from type paper 12 when not installing curtain body 1, avoid viscose layer 11 and other article to take place the adhesion.
Referring to fig. 1-2, for the purpose of enhancing the stability between layers inside the installation groove 7; the height of the mounting groove 7 is matched with the height formed by combining the shock absorption layer 3, the powder storage layer 4, the fireproof sound insulation layer 5 and the decoration layer 6, and glue is filled in the inner gap of the mounting groove 7; the height of mounting groove 7 and other each layer high phase-match of combination for the surface smoothness of curtain body 1 can not appear sunken or outstanding condition, sets up glue, and glue fills space department, can improve the inside and each layer of being connected compactness of mounting groove 7, in order to avoid appearing not hard up condition.
The use principle and the advantages are as follows: when the curtain wall body 1 is used, a worker firstly fixedly installs the damping layer 3 in the installation groove 7 of the aluminum alloy base layer 2, wherein the damping layer 3 is composed of an upper connecting plate 301, a lower connecting plate 302 and a damping spring 303, the upper connecting plate 301 and the lower connecting plate 302 can enable the damping layer 3 to be better connected with the fireproof sound insulation layer 5 and the aluminum alloy base layer 2, the damping spring 303 can disperse and reduce the impact force applied to the curtain wall body 1 to ensure the safety of the curtain wall body 1, then the fireproof sound insulation layer 5 is installed on the damping layer 3, the fireproof sound insulation layer 5 is composed of a fireproof rock wool board 501 and a sound insulation board 502, the sound insulation board 502 can play a role in absorbing and reducing noise, thereby, through the whole sound insulation effect of the curtain wall body 1, the fireproof rock wool board 501 is positioned on the outer layer, the fireproof rock wool board 501 has the characteristics of high temperature resistance, flame resistance, the fireproof rock wool board 501 can effectively resist high temperature, the powder storage layer 4 is fixedly installed on the fireproof sound insulation layer 5, the cavity 401 is arranged inside the powder storage layer 4, the fire extinguishing agent dry powder 402 is filled inside the cavity 401, when a fire disaster or a high-temperature condition occurs, the shell of the powder storage layer 4 is damaged by high temperature, the fire extinguishing agent dry powder 402 in the cavity 401 can be spilled out, so that a certain fire extinguishing effect is achieved, the decorative layer 6 is arranged on the top of the powder storage layer 4, the decorative layer 6 is composed of a fireproof oil paint layer 601 and a decorative pattern layer 602, the fireproof oil paint layer 601 is located on the outer side of the curtain wall body 1, the first layer of fire preventing effect is achieved when high temperature occurs, the decorative pattern layer 602 is located on the outermost side of the curtain wall body 1, so that the whole attractiveness of the curtain wall body 1 is guaranteed, after installation, the space inside the installation groove 7 is filled with glue, and then the curtain wall body 1 is installed on a wall through the connecting block 8, the adhesive layer 11 on the back of the connecting block 8 is used for reinforcing the connection relationship between the connecting block 8 and the wall.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an aluminium veneer curtain with fire prevention effect, includes curtain body (1), its characterized in that: curtain body (1) comprises aluminum alloy basic unit (2), buffer layer (3), powder storage layer (4), fire prevention puigging (5), decorative layer (6), mounting groove (7) have been seted up in the front of aluminum alloy basic unit (2), four corners homogeneous style of aluminum alloy basic unit (2) are connected with connecting block (8), threaded hole (9) are all seted up in the front of connecting block (8), the equal threaded connection in inside of threaded hole (9) has fastening bolt (10), the inside fixedly connected with buffer layer (3) of mounting groove (7), the top fixedly connected with fire prevention puigging (5) of buffer layer (3), the top fixedly connected with powder storage layer (4) of fire prevention puigging (5), the top spraying of powder storage layer (4) has decorative layer (6).
2. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: the shock-absorbing layer (3) comprises upper junction plate (301), lower connecting plate (302), damping spring (303), the top fixedly connected with multiunit damping spring (303) of lower connecting plate (302), damping spring (303)'s other end fixedly connected with upper junction plate (301), the connecting plate is mutual symmetry each other.
3. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: a cavity (401) is formed in the powder storage layer (4), and fire extinguishing agent dry powder (402) is filled in the cavity (401).
4. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: fireproof soundproof layer (5) comprises fireproof rock wool board (501) and acoustic celotex board (502), the top bonding of acoustic celotex board (502) has fireproof rock wool board (501).
5. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: the decorative layer (6) is composed of a fireproof paint layer (601) and a decorative pattern layer (602), and the decorative pattern layer (602) is sprayed on the top of the fireproof paint layer (601).
6. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: the back of connecting block (8) all bonds has viscose layer (11), the back bonding of viscose layer (11) has from type paper (12).
7. The aluminum veneer curtain wall with fire-proof effect as claimed in claim 1, wherein: the height of the mounting groove (7) is matched with the height formed by combining the shock absorption layer (3), the powder storage layer (4), the fireproof sound insulation layer (5) and the decoration layer (6), and glue is filled in the inner gap of the mounting groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022306853.1U CN214144275U (en) | 2020-10-16 | 2020-10-16 | Aluminum veneer curtain wall with fireproof effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022306853.1U CN214144275U (en) | 2020-10-16 | 2020-10-16 | Aluminum veneer curtain wall with fireproof effect |
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| CN214144275U true CN214144275U (en) | 2021-09-07 |
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| CN202022306853.1U Expired - Fee Related CN214144275U (en) | 2020-10-16 | 2020-10-16 | Aluminum veneer curtain wall with fireproof effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277982A (en) * | 2021-12-20 | 2022-04-05 | 陕西嘉阳建设工程有限公司 | Fireproof curtain wall |
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2020
- 2020-10-16 CN CN202022306853.1U patent/CN214144275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277982A (en) * | 2021-12-20 | 2022-04-05 | 陕西嘉阳建设工程有限公司 | Fireproof curtain wall |
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Granted publication date: 20210907 |