CN220225770U - Thermal insulation noise reduction polyurethane board - Google Patents
Thermal insulation noise reduction polyurethane board Download PDFInfo
- Publication number
- CN220225770U CN220225770U CN202321768103.3U CN202321768103U CN220225770U CN 220225770 U CN220225770 U CN 220225770U CN 202321768103 U CN202321768103 U CN 202321768103U CN 220225770 U CN220225770 U CN 220225770U
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- noise reduction
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 75
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 73
- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 229920000742 Cotton Polymers 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000004964 aerogel Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 22
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model discloses a heat-insulating and noise-reducing polyurethane board which comprises a protection board, a polyurethane board body, a sound-insulating and noise-reducing layer, a heat-insulating layer and a metal panel which are sequentially overlapped, wherein a first protection frame is arranged on the protection board, a second protection frame corresponding to the first protection frame is arranged on the metal panel, the first protection frame is clamped with the second protection frame, and a closed cube space which is used for sealing the polyurethane board body, the sound-insulating and noise-reducing layer and the heat-insulating layer is formed by the first protection frame, the second protection frame, the protection board and the metal panel. According to the utility model, the sound insulation and noise reduction layer and the heat insulation layer are arranged, so that the heat insulation and noise reduction performances of the polyurethane board are synchronously improved, the polyurethane board body, the sound insulation and noise reduction layer and the heat insulation layer are packaged between the protection plate and the metal panel through the first protection frame and the second protection frame, the circumferences of the polyurethane board body, the sound insulation and noise reduction layer and the heat insulation layer are effectively protected, the damage to the board body caused by collision and abrasion is avoided, and the service life of the board body is greatly prolonged.
Description
Technical Field
The utility model relates to the technical field of building boards. More particularly, the utility model relates to a thermal insulation noise reduction polyurethane board.
Background
The polyurethane board is a polyurethane sandwich board which is completely made of PU or is formed by compounding PU and color steel plates, and is widely used in the fields of color steel sandwich boards, central air conditioners, building wall materials, refrigeration houses, refrigerating chambers, heat preservation boxes, chemical tank bodies and the like. Along with the expansion of application scenes, the requirements on heat preservation and noise reduction performance of the polyurethane board are higher and higher, a multilayer structure is arranged on a polyurethane board body in a superposed mode, so that the heat preservation and noise reduction performance of the polyurethane board is improved, synchronous noise reduction and heat preservation performance of the polyurethane board in the prior art are poor, the periphery of the layered structure is not protected, and the peripheral edge of the polyurethane board body cannot be protected, for example, the utility model patent with the authority number of CN218292323U discloses a polyurethane sound insulation and heat preservation board which comprises two polyurethane panels, a support seat which is connected with the two polyurethane panels and is provided with an aluminum foil layer and glass fiber paper arranged on the outer side of the polyurethane panels, and the support seat is filled with a noise reduction material.
Disclosure of Invention
It is an object of the present utility model to solve at least the above problems and to provide at least the advantages to be described later.
The utility model also aims to provide a heat-insulating noise-reducing polyurethane board which is used for solving the technical problems described in the background art.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a thermal insulation and noise reduction polyurethane board comprising a protection plate, a polyurethane board body, a sound insulation and noise reduction layer, a thermal insulation layer and a metal panel which are sequentially stacked, wherein a first protection frame is arranged on the protection plate, a second protection frame corresponding to the first protection frame is arranged on the metal panel, and the first protection frame is clamped with the second protection frame, and forms a closed cubic space with the protection plate and the metal panel, wherein the polyurethane board body, the sound insulation and noise reduction layer and the thermal insulation layer are packaged in the closed cubic space.
Preferably, the heat-insulating noise-reducing polyurethane board comprises four first side plates integrally formed with the protection plate, and the adjacent side edges of the four first side plates are in sealing connection, so that a cubic frame structure is formed; each first side plate is vertically arranged with the protection plate; the second protection frame comprises four second side plates integrally formed with the metal panel, and each second side plate is perpendicular to the metal panel; each first side plate and one second side plate are correspondingly arranged, and the first side plates are mutually clamped with the corresponding second side plates.
Preferably, the heat-insulating noise-reducing polyurethane board is provided with clamping grooves on the edge of each first side plate, and clamping blocks matched with the clamping grooves are arranged on each second side plate.
Preferably, the inner sides of the heat-insulating noise-reducing polyurethane board, the protection board and the metal panel are respectively provided with an elastic rubber layer.
Preferably, the polyurethane board of making an uproar falls in heat preservation, the sound insulation layer of making an uproar includes:
two sound-absorbing cotton plates, wherein a plurality of first grooves are formed on one side, close to each other, of each sound-absorbing cotton plate;
the noise reduction board is arranged between the two sound absorption cotton boards, a plurality of second grooves are formed in two sides of the noise reduction board, each first groove is correspondingly provided with a second groove, the first grooves and the corresponding second grooves form a hollow cylinder-structured accommodating cavity, and aerogel particles are filled in each accommodating cavity.
Preferably, the heat-insulating and noise-reducing polyurethane board is provided with a plurality of third grooves on the other side of each sound-absorbing cotton, which is far away from each other, one first groove is correspondingly provided with a third groove, each third groove is correspondingly provided with a first connecting pipe, one end of each first connecting pipe is communicated with the corresponding third groove, and the other end of each first connecting pipe extends into the corresponding first groove along the thickness direction of the sound-absorbing cotton; each third groove is filled with an adhesive;
the plurality of second grooves on the two sides of the noise reduction plate are arranged in pairs along the thickness direction of the noise reduction plate, each pair of second grooves is correspondingly provided with a second connecting pipe, and two ends of each second connecting pipe are positioned in the corresponding second grooves and are respectively communicated with the corresponding two first connecting pipes.
Preferably, in the heat-insulating noise-reducing polyurethane board, one end of each sound-absorbing cotton board is provided with a fourth groove communicated with the plurality of first grooves;
one end of the noise reduction plate is provided with two fifth grooves, each fifth groove is communicated with a plurality of corresponding second grooves, the fifth grooves and one fourth groove form a hollow cylindrical cavity, and aerogel particles are filled in the hollow cylindrical cavity; each cavity is provided with an air suction hole, and an airtight core is arranged in the air suction hole.
Preferably, the heat-insulating noise-reducing polyurethane board is provided with a wavy decorative layer on the outer side surface of the protection plate.
The utility model at least comprises the following beneficial effects:
the utility model provides a polyurethane board with heat preservation and noise reduction dual excellent performances, which comprises a protection plate, a polyurethane board body, a sound insulation and noise reduction layer, a heat preservation layer and a metal panel which are sequentially overlapped, wherein a first protection frame and a second protection frame which are mutually clamped are respectively and correspondingly arranged on the protection plate and the metal panel which are positioned at the outer side, so that the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are packaged in a closed cubic space surrounded by the protection plate, the first protection frame, the second protection frame and the metal panel, the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are comprehensively and effectively protected, the peripheral edges of the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are prevented from being exposed, the damage to the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer caused by collision and friction is avoided, and the service life of the polyurethane board is greatly prolonged.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic structural view of a thermal insulation noise reduction polyurethane board according to one embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a thermal insulation noise reduction polyurethane board according to another embodiment of the present utility model.
Reference numerals illustrate: 1-protecting plates; 2-polyurethane board body; 3-a sound-absorbing cotton board; 31-a first groove; 32-a third groove; 33-a first connection tube; 34-fourth grooves; 4-a noise reduction plate, 41-a second groove; 42-a second connecting tube; 43-fifth groove; 5-an insulating layer; 6-metal panel; 7-a decorative layer.
Detailed Description
The present utility model is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the utility model by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The experimental methods described in the following embodiments are conventional methods unless otherwise indicated, and the reagents and materials are commercially available.
In the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1-2, the utility model provides a thermal insulation and noise reduction polyurethane board, which comprises a protection board 1, a polyurethane board body 2, a sound insulation and noise reduction layer, a thermal insulation layer 5 and a metal panel 6 which are sequentially overlapped, wherein a first protection frame 11 is arranged on the protection board 1, a second protection frame 61 corresponding to the first protection frame 11 is arranged on the metal panel 61, the first protection frame 11 is clamped with the second protection frame 61, and a closed cube space which is packaged with the polyurethane board body 2, the sound insulation and noise reduction layer and the thermal insulation layer 5 is formed by the protection board 11 and the metal panel 61.
The utility model provides a polyurethane board with heat preservation and noise reduction dual excellent performances, which comprises a protection plate, a polyurethane board body, a sound insulation and noise reduction layer, a heat preservation layer and a metal panel which are sequentially overlapped, wherein a first protection frame and a second protection frame which are mutually clamped are respectively and correspondingly arranged on the protection plate and the metal panel which are positioned at the outer side, so that the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are packaged in a closed cubic space surrounded by the protection plate, the first protection frame, the second protection frame and the metal panel, the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are comprehensively and effectively protected, the peripheral edges of the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer are prevented from being exposed, the damage to the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer caused by collision and friction is avoided, and the service life of the polyurethane board is greatly prolonged.
The polyurethane plates are combined by multiple layers, any two adjacent layers are connected by a conventional technical means, such as adhesion by a strong adhesive, and the metal panel can be a color steel plate.
In another technical scheme, the first protection frame 11 comprises four first side plates integrally formed with the protection plate 1, and the adjacent side edges of the four first side plates are in sealing connection, so that a cubic frame structure is formed; each first side plate is vertically arranged with the protection plate; the second protective frame 61 comprises four second side plates integrally formed with the metal panel 6, and each second side plate is arranged vertically to the metal panel; each first side plate and one second side plate are correspondingly arranged, and the first side plates are mutually clamped with the corresponding second side plates.
The first protection frame comprises four first side plates, each first side plate is integrally formed with one side edge of the protection plate, two adjacent side edges of any adjacent first side plates are integrally formed and arranged, the four first side plates and the protection plate form a cube box structure with an open side face, the second protection frame also comprises four second side plates, each second side plate is integrally formed with one side edge of the metal panel, two adjacent side edges of any adjacent second side plates are integrally formed and arranged, the four second side plates and the metal panel form a cube box structure with an open side face, and each first side plate and the corresponding second side plate are mutually clamped; the openings of the two cube box structures are arranged in opposite directions and are buckled with each other to form a closed cube space for accommodating the polyurethane board body, the sound insulation and noise reduction layer and the heat preservation layer.
In another technical scheme, the polyurethane board of making an uproar falls in heat preservation, be equipped with the draw-in groove on the edge of every first curb plate, be equipped with on every second curb plate with the fixture block of draw-in groove adaptation. Through set up the draw-in groove on first curb plate, set up the fixture block on the second curb plate, the fixture block can be blocked and locate in the draw-in groove that corresponds, and then realized the joint of first curb plate and second curb plate.
In another technical scheme, the inner sides of the heat-insulating noise-reducing polyurethane board, the protection plate 1 and the metal panel 6 are respectively provided with an elastic rubber layer. The inner sides of the protection plate and the metal panel are respectively provided with an elastic rubber layer, a certain elastic extrusion force is provided, and the polyurethane plate body, the sound insulation noise reduction layer and the heat preservation layer can be tightly clamped between the protection plate and the metal panel through the clamping connection of the first protection frame and the second protection frame.
In another technical scheme, thermal insulation and noise reduction polyurethane board, the sound insulation and noise reduction layer includes:
two sound-absorbing cotton boards 3, each sound-absorbing cotton board 3 is provided with a plurality of first grooves 31 on one side close to each other;
the noise reduction board 4 is arranged between the two sound absorption cotton boards 3, a plurality of second grooves 41 are formed in two sides of the noise reduction board 4, each first groove 31 is correspondingly provided with one second groove 41, the first groove 31 and the corresponding second groove 41 form a hollow cylinder-shaped accommodating cavity, and aerogel particles are filled in each accommodating cavity.
In the technical scheme, the sound-insulating and noise-reducing layer comprises two sound-absorbing cotton plates and a noise-reducing plate clamped between the two sound-absorbing cotton plates, as shown in fig. 1, the polyurethane plate comprises a metal panel, a heat-insulating layer, a sound-absorbing cotton plate, a noise-reducing plate, a sound-absorbing cotton plate, a polyurethane plate and a protection plate which are sequentially overlapped from top to bottom, the two sound-absorbing cotton plates face one side surface of the noise-reducing layer, a plurality of first grooves are arranged at intervals along the left-right direction (the direction parallel to the screen), each first groove extends along the front-back direction (the direction perpendicular to the screen), a plurality of second grooves are correspondingly arranged on the two side surfaces of the noise-reducing layer, the vertical sections of the first grooves and the second grooves are semicircular, each first groove is correspondingly provided with one second groove, the first grooves and the second grooves can form a hollow cylinder structure containing cavity, as shown in fig. 1, a plurality of cylinder structure containing cavities are respectively formed on the upper side and lower side surfaces of the noise-reducing layer, sound-insulating particles with excellent noise-reducing and noise-insulating effects are filled in the containing cavities, and noise-reducing effects are greatly improved.
In another technical scheme, the heat-insulating and noise-reducing polyurethane board is characterized in that a plurality of third grooves 32 are formed in the other side, away from each other, of each sound-absorbing cotton 3, one first groove 31 is correspondingly provided with one third groove 32, each third groove 32 is correspondingly provided with one first connecting pipe 33, one end of each first connecting pipe 33 is communicated with the corresponding third groove 32, and the other end of each first connecting pipe 33 extends into the corresponding first groove 31 along the thickness direction of the sound-absorbing cotton; each third groove 32 is filled with an adhesive;
the plurality of second grooves 41 on both sides of the noise reduction plate 4 are arranged in pairs along the thickness direction of the noise reduction plate 4, each pair of second grooves 41 is provided with a second connecting pipe 42, and both ends of each second connecting pipe 42 are positioned in the corresponding second grooves 41 and are respectively communicated with the corresponding two first connecting pipes 33.
According to the technical scheme, the plurality of third grooves are further formed in the other side face, far away from the noise reduction plate, of each sound absorption cotton plate, the third grooves in the two sound absorption panels are arranged in pairs in the vertical direction, each pair of third grooves are communicated with one second connecting pipe through two first connecting pipes, and the third grooves are filled with adhesive, so that the two sound absorption cotton plates form a whole through the plurality of pairs of communicated third grooves, the integrity and the firmness of the sound insulation noise reduction layer are improved, further, each containing cavity is supported by the plurality of connecting pipe groups, each connecting pipe group comprises two first connecting pipes and one second connecting pipe, and the mechanical strength of the noise reduction plate is improved.
In another technical scheme, in the heat-insulation noise-reduction polyurethane board, one end of each sound-absorbing cotton board 3 is provided with a fourth groove 34 communicated with the plurality of first grooves 31; the fourth groove is perpendicular to the first groove;
two fifth grooves 43 are formed in one end of the noise reduction plate 4, each fifth groove is communicated with a plurality of corresponding second grooves, the fifth grooves 43 and one fourth groove 34 form a hollow cylindrical cavity, and aerogel particles are filled in the hollow cylindrical cavity; each cavity is communicated with a plurality of corresponding accommodating cavities, one end of each cavity is provided with an air suction hole, and an airtight core is arranged in each cavity.
In the above technical scheme, as shown in fig. 2, a fourth groove is formed on each sound-absorbing cotton board, two fifth grooves are formed on the noise-reducing board, the fourth groove and the fifth grooves are all perpendicular to the first groove, the fourth groove and the fifth groove are in a strip-shaped semi-cylindrical structure, the fifth groove and one fourth groove form a hollow cavity, one cavity is communicated with a plurality of corresponding accommodating cavities, and one end of the cavity is provided with an air suction hole provided with an airtight core, and the cavity and the accommodating cavities can be vacuumized by opening the airtight core and communicating with the air suction hole by using an air suction pump, so that a plurality of vacuum cavities are formed in the sound-insulating noise-reducing layer, and the heat insulation performance and the sound insulation performance of sound insulation are improved.
In another technical scheme, the polyurethane board of making an uproar falls in heat preservation, be equipped with wavy decorative layer 7 on the lateral surface of guard plate 1. The outer side surface of the protection plate is provided with a wavy decorative layer, so that the decorative effect of the polyurethane plate is provided.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present utility model. Applications, modifications and variations of the present utility model will be readily apparent to those skilled in the art.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. The heat-insulating and noise-reducing polyurethane board is characterized by comprising a protection plate, a polyurethane plate body, a sound-insulating and noise-reducing layer, a heat-insulating layer and a metal panel which are sequentially overlapped, wherein a first protection frame is arranged on the protection plate, a second protection frame corresponding to the first protection frame is arranged on the metal panel, the first protection frame is clamped with the second protection frame, and a sealed cube space which is provided with the polyurethane plate body, the sound-insulating and noise-reducing layer and the heat-insulating layer in a sealing mode is formed with the protection plate and the metal panel.
2. The thermal insulation and noise reduction polyurethane board according to claim 1, wherein the first protection frame comprises four first side plates integrally formed with the protection plate, and adjacent side edges of the four first side plates are in sealing connection, so that a cubic frame structure is formed; each first side plate is vertically arranged with the protection plate; the second protection frame comprises four second side plates integrally formed with the metal panel, and each second side plate is perpendicular to the metal panel; each first side plate and one second side plate are correspondingly arranged, and the first side plates are mutually clamped with the corresponding second side plates.
3. The thermal insulation and noise reduction polyurethane board according to claim 2, wherein a clamping groove is formed in the edge of each first side plate, and a clamping block matched with the clamping groove is arranged on each second side plate.
4. The thermal insulation and noise reduction polyurethane board according to claim 1, wherein the inner sides of the protection plate and the metal panel are provided with elastic rubber layers.
5. The thermal insulation and noise reduction polyurethane board of claim 1, wherein the sound insulation and noise reduction layer comprises:
two sound-absorbing cotton plates, wherein a plurality of first grooves are formed on one side, close to each other, of each sound-absorbing cotton plate;
the noise reduction board is arranged between the two sound absorption cotton boards, a plurality of second grooves are formed in two sides of the noise reduction board, each first groove is correspondingly provided with a second groove, the first grooves and the corresponding second grooves form a hollow cylinder-structured accommodating cavity, and aerogel particles are filled in each accommodating cavity.
6. The heat-insulating and noise-reducing polyurethane board according to claim 5, wherein a plurality of third grooves are formed in the other side, away from each other, of each sound-absorbing cotton, one of the third grooves is correspondingly provided with a third groove, each third groove is correspondingly provided with a first connecting pipe, one end of each first connecting pipe is communicated with the corresponding third groove, and the other end of each first connecting pipe extends into the corresponding first groove along the thickness direction of the sound-absorbing cotton; each third groove is filled with an adhesive;
the plurality of second grooves on the two sides of the noise reduction plate are arranged in pairs along the thickness direction of the noise reduction plate, each pair of second grooves is correspondingly provided with a second connecting pipe, and two ends of each second connecting pipe are positioned in the corresponding second grooves and are respectively communicated with the corresponding two first connecting pipes.
7. The thermal insulation and noise reduction polyurethane board according to claim 6, wherein one end of each sound absorbing cotton board is provided with a fourth groove communicated with the plurality of first grooves;
one end of the noise reduction plate is provided with two fifth grooves, each fifth groove is communicated with a plurality of corresponding second grooves, the fifth grooves and one fourth groove form a hollow cylindrical cavity, and aerogel particles are filled in the hollow cylindrical cavity; each cavity is provided with an air suction hole, and an airtight core is arranged in the air suction hole.
8. The thermal insulation and noise reduction polyurethane board according to claim 1, wherein the outer side surface of the protection plate is provided with a wavy decorative layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768103.3U CN220225770U (en) | 2023-07-06 | 2023-07-06 | Thermal insulation noise reduction polyurethane board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768103.3U CN220225770U (en) | 2023-07-06 | 2023-07-06 | Thermal insulation noise reduction polyurethane board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220225770U true CN220225770U (en) | 2023-12-22 |
Family
ID=89193678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321768103.3U Active CN220225770U (en) | 2023-07-06 | 2023-07-06 | Thermal insulation noise reduction polyurethane board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220225770U (en) |
-
2023
- 2023-07-06 CN CN202321768103.3U patent/CN220225770U/en active Active
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