CN211344470U - Vacuum insulation panel provided with mounting holes and free of surface damage - Google Patents
Vacuum insulation panel provided with mounting holes and free of surface damage Download PDFInfo
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- CN211344470U CN211344470U CN201921620597.4U CN201921620597U CN211344470U CN 211344470 U CN211344470 U CN 211344470U CN 201921620597 U CN201921620597 U CN 201921620597U CN 211344470 U CN211344470 U CN 211344470U
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Abstract
The utility model discloses a vacuum insulation panel with mounting holes and no fear of surface damage, including at least two layers of vacuum insulation structure layers, namely an inner vacuum insulation structure layer and at least one outer vacuum insulation structure layer wrapped outside the inner vacuum insulation structure layer, the inner vacuum insulation structure layer comprises an inner core plate, the inner core plate is provided with a mounting groove of a gas suction material, the gas suction material is arranged in the mounting groove, an inner high barrier gas film bag is sleeved outside the inner core plate provided with the gas suction material, the inner high barrier gas film bag provided with the inner core plate is vacuumized and heat-sealed by high vacuum equipment to form the inner vacuum insulation structure layer; the outer vacuum heat insulation structure layer is made by an outer core plate and an outer high vacuum barrier air film bag wrapped outside the outer core plate through vacuum pumping and heat sealing by high vacuum heat sealing equipment, and an inner mounting hole and an outer mounting hole which correspond to each other in position are respectively arranged on the inner core plate and the outer core plate. The vacuum heat insulation plate has the advantages of no bulging, no expansion, no water absorption and heat insulation performance retention after the surface of the vacuum heat insulation plate is damaged.
Description
Technical Field
The utility model relates to a heat preservation, thermal-insulated, fire prevention panel technical field, concretely relates to vacuum insulation panels with mounting hole and fear surface damage not.
Background
With the emphasis on energy conservation and emission reduction in various countries, the heat insulation technology is rapidly developed, and the vacuum heat insulation plate is more and more concerned as a novel heat insulation material and a novel heat insulation device. The vacuum insulation panel comprises an insulation core material, a high-barrier film, an adsorbent and the like, wherein the high-barrier film can effectively reduce gas permeation into the insulation system, maintain the internal vacuum degree and keep the product performance. At present, a single-layer core plate and a single-layer barrier film structure are mostly adopted in the market, the structure can prevent gas from permeating to a certain degree, but along with the lapse of time, the film material can be damaged, and the gas enters the inside of a system to damage a vacuum structure, so that the heat insulation performance of a product is failed. And the vacuum insulation plate can not be directly perforated, and then is fixed on a wall or other objects, so that the vacuum insulation plate leaks air, and the heat preservation and wind heating effects are lost.
In view of the above circumstances, there is a need to design a new film material structure to improve the heat insulation performance of the product and facilitate the fixing of the product on the wall. When the composite material is applied to the fields of building outer walls, refrigerators, freezers and the like, the energy consumption can be reduced, and the heat insulation performance can be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a simple structure, adiabatic effectual, long service life, be not afraid of the surface damage, leak not gas, the bulging not behind the surface damage, mass production low in manufacturing cost is convenient for fix its one kind on the wall body in addition be equipped with the mounting hole and not fear the vacuum insulation panels of surface damage.
In order to achieve the purpose, the technical scheme of the utility model is to design a vacuum insulation panel provided with a mounting hole and not afraid of surface damage, the vacuum insulation panel comprises at least two layers of vacuum insulation structure layers, namely an inner vacuum insulation structure layer and at least one outer vacuum insulation structure layer wrapping the outer part of the inner vacuum insulation structure layer, the inner vacuum insulation structure layer comprises an inner core plate, the inner core plate is provided with a mounting groove for air suction materials, the air suction materials are arranged in the mounting groove, an inner high-barrier air film bag is sleeved outside the inner core plate provided with the air suction materials, and the inner high-barrier air film bag provided with the inner core plate is vacuumized and heat-sealed by high-vacuum equipment to form the inner vacuum insulation structure layer; the outer vacuum heat insulation structure layer is made by an outer core plate and outer high-barrier air film bags wrapped outside the outer core plate through vacuumizing and heat sealing by high-vacuum heat sealing equipment, the edge of each outer core plate is provided with an edge structure, the edge structure is connected with the outer core plate, or the edge structure and the outer core plate form an integral structure, the outer core plate and the outer high-barrier air film bags wrapped on the outer core plate are repeatedly alternated for multiple times to form a multi-layer vacuum heat insulation structure layer, the inner core plate and the outer core plate are respectively provided with at least one inner mounting hole and an outer mounting hole which correspond to each other in position, and the inner mounting hole and the outer mounting hole isolate the inner mounting hole from the inner core plate and the outer core plate through the inner partition plate and the outer partition plate.
In order to facilitate and enhance the sealing performance and strength of the inner high-barrier gas film bag and the outer high-barrier gas film bag, the preferred technical scheme is that the inner high-barrier gas film bag and the outer high-barrier gas film bag respectively comprise more than 5 of a glass fiber braided layer, a nylon layer, an aluminized PET layer, a PET layer, an EVOH layer, an aluminum foil layer and a PE plastic film layer which are sequentially compounded according to any sequence.
In order to facilitate the separation of the partition board provided with the mounting hole from the core board layer and prevent gas from entering the core board layer through the mounting hole and the partition board, and simultaneously, in order to facilitate the placement of the partition board in the core board layer according to a set position, the preferred technical scheme is that the inner partition board and the outer partition board are rectangular boards or annular boards, bonding layers which are made of the same material as the inner surfaces of the inner high-barrier gas film bag and the outer high-barrier gas film bag are arranged on the two surfaces of the inner partition board and the outer partition board, and the inner partition board and the outer partition board are positioned on the inner core board and the outer core board through a mold.
In order to facilitate the processing and manufacturing of the inner partition plate, facilitate the positioning of the inner partition plate in the inner core plate, facilitate the bonding between the inner partition plate and the inner surface of the inner high-barrier air film bag, a further preferred technical scheme is that the inner partition plate arranged in the inner core plate is a rectangular partition plate, the rectangular partition plate divides the inner core plate into at least two parts, the thickness of the inner partition plate is the same as that of the inner core plate layer, and bonding layers made of the same material as that of the inner surface of the inner high-barrier air film bag are arranged on two sides of the inner partition plate.
In order to facilitate the bonding between outermost outer core plate and outer high resistant gas barrier film bag internal surface, can ensure simultaneously that under the high resistant gas barrier film bag by the damaged condition, can not take off between core plate layer and the high resistant gas barrier film bag to cause the bulging of vacuum insulation panel, the bonding of the high resistant gas barrier film bag of being convenient for and outer high resistant gas barrier film bag department of sealing butt joint, further preferred technical scheme is, at least outmost the surface of outer core plate adheres to there is the viscose layer, or adds in the raw materials of outermost outer core plate has the viscose raw materials, at least the internal surface of outer high resistant gas barrier film bag adheres to there is the viscose layer.
For the convenience of bonding between outermost layer outer core board and the outer high resistant gas barrier membrane bag internal surface, can ensure simultaneously that the high resistant separates the gas barrier membrane bag by under the damaged condition, can not deviate from between core board layer and the high resistant gas barrier membrane bag to cause the bulging of vacuum insulation panels, the high resistant separates the bonding of gas barrier membrane bag and outer high resistant gas barrier membrane bag department of sealing butt joint department in being convenient for, the utility model discloses further preferred technical scheme still, the viscose layer is hot melt adhesive layer, the viscose raw materials is the hot melt viscose.
In order to ensure that the vacuum insulation panel has good heat insulation and fire prevention effects and simultaneously facilitate reduction of manufacturing cost of the vacuum insulation panel, a further preferred technical scheme is that the inner core plate and the outer core plate are both made of one material or any combination material of glass fiber, meteorological silica, nano microporous materials and aerogel, and the inner high-barrier gas film bag and the outer high-barrier gas film bag can be both made of composite films containing glass fiber.
In order to avoid the damage to the surface of the vacuum insulation panel caused by external impact or scratch as much as possible and enable the surface of the vacuum insulation panel to have certain hardness, toughness and puncture resistance, a further preferable technical scheme is that the surface puncture resistance strength of the outermost outer high-barrier gas film bag layer is more than or equal to 21N.
In order to ensure that the vacuum insulation panel has certain strength, good heat insulation and fire resistance and is not easy to break, a further preferred technical scheme is that an inner vacuum insulation structure layer or an upper outer vacuum insulation structure layer is filled in each outer core plate layer.
The utility model has the advantages and the beneficial effects that: the vacuum insulation panel provided with the mounting hole and free of surface damage has the advantages of being simple in structure, good in insulation effect, long in service life, free of surface damage, free of air leakage and bulging after surface damage, low in manufacturing cost of batch production, convenient to fix the vacuum insulation panel on a wall body and the like.
The vacuum heat insulation plate at least has two layers of vacuum heat insulation structures, and the core plate and the high-barrier gas film bag are bonded by glue and/or bonding to form an integral structure. And the heat insulation plate is also provided with mounting holes which penetrate through the heat insulation plate, the mounting holes are separated from the vacuum heat insulation plate by the partition plate, and the two sides of the partition plate are bonded with the bonding layer in the high-barrier air film bag, so that air can not enter the core plate layer.
Therefore, even if the surface of the vacuum insulation panel is damaged, air does not enter the vacuum insulation panel of the inner layer. And the gas entering the damaged part under the action of the adhesive can not be diffused, so that the core plate and the high-barrier gas film bag are separated, and the film bag is expanded. In addition, if aerogel or hot melt viscose is added into one material or any combination material of glass fiber, meteorological silica, an inorganic fiber board and aerogel, the aerogel or hot melt viscose is put into a high-barrier air film bag in a core board and is vacuumized, and then is subjected to heating treatment, so that the vacuum insulation board can form an integral plate which is like a steel and has no gap inside, and meanwhile, because the layers are bonded into an integral structure through the aerogel or hot melt viscose, even if local damaged air cannot enter other parts inside the vacuum insulation board. Therefore, the vacuum insulation panel has better heat insulation and fire prevention performance than the existing vacuum insulation panel. Meanwhile, special tool equipment is adopted in batch production, the production cost is not obviously increased, and the thickness of each layer of core plate can be correspondingly reduced in proportion due to the fact that the number of the core plate layers is increased, so that the total thickness of the vacuum heat-insulating plate cannot be obviously increased.
Drawings
Fig. 1 is one of schematic cross-sectional structural diagrams of the vacuum insulation panel of the present invention;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
fig. 3 is a schematic diagram of the exploded structure of fig. 1 with the high barrier gas film pouch removed.
In the figure: 1. an inner core board; 2. an inner high-barrier air film bag; 3. an inner vacuum heat insulation structure layer; 4. an outer core board; 4.1, edge structure; 5. an outer high barrier gas film bag; 6. an outer vacuum insulation structural layer; 7. an inner mounting hole; 8. an inner partition plate; 9. an outer mounting hole; 10. an outer baffle.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, 2 and 3, the utility model relates to a vacuum insulation panel with mounting hole and not fear damaged surface, the vacuum insulation panel includes at least two-layer vacuum insulation structural layer, interior vacuum insulation structural layer 3 and the outer vacuum insulation structural layer 6 of at least one deck of parcel in the outside of vacuum insulation structural layer 3 promptly, interior vacuum insulation structural layer 3 includes inner core board 1, is provided with the mounting groove of breathing material on the inner core board 1, be equipped with the breathing material in the mounting groove, the outer cover of inner core board 1 that installs the breathing material is equipped with interior high barrier gas membrane bag 2, the interior high barrier gas membrane bag 2 that is equipped with inner core board 1 makes interior vacuum insulation structural layer 3 through high vacuum equipment evacuation, heat-seal; the outer vacuum heat insulation structure layer 6 is made by an outer core plate 4 and an outer high-barrier air film bag 5 wrapped outside the outer core plate 4 through vacuum pumping and heat sealing by high-vacuum heat sealing equipment, the edge of each outer core plate 4 is provided with an edge structure 4.1, the edge structure 4.1 is connected with the outer core plate 4, or the edge structure 4.1 and the outer core plate 4 form an integral structure, the outer core plate 4 and the outer high-barrier air film bag 5 wrapped on the outer core plate 4 are alternately repeated for multiple times to form a multilayer vacuum heat insulation structure layer, an inner mounting hole 7 and an outer mounting hole 9 which correspond to each other in position are respectively arranged on the inner core plate 1 and the outer core plate 2, and the inner mounting hole 7 and the outer mounting hole 9 are isolated from the inner core plate 1 and the outer core plate 4 through the inner partition plate 8 and the outer partition plate 10.
In order just to separate the sealing performance and the intensity of gas film bag with the outer high resistant with strengthening interior high resistant, the utility model discloses preferred embodiment is, interior high resistant separates gas film bag 2 and outer high resistant separates gas film bag 5 respectively including the fine weaving layer of glass, nylon layer, aluminized PET layer, aluminium foil layer, 5 kinds of compound formation according to order in proper order that form of complex in proper order of forming.
In order to make things convenient for the baffle that will be equipped with the mounting hole, make its mounting hole keep apart with the core layer for avoid gaseous through mounting hole and baffle entering into the core in situ, in order to lay the baffle in the core in situ according to the position of setting for simultaneously for the convenience, the utility model discloses preferred embodiment is, interior baffle 8 is the rectangular plate or is the annular slab with outer baffle 10, and interior baffle 8 all is equipped with the adhesive linkage that separates the same material of interior surface with interior high resistant gas barrier film bag 1, outer high resistant gas barrier film bag 5 with outer baffle 10 on two sides, and interior baffle 8 passes through the mould with outer baffle 10 and fixes a position on interior core 1 and outer core 4.
In order to facilitate the processing and manufacturing of the inner baffle 8, the location of the inner baffle 8 in the inner core plate 1 is convenient, and the bonding between the inner baffle 8 and the inner surface of the inner high-barrier air film bag 2 is convenient, the utility model discloses further preferred embodiment is, sets up the inner baffle 8 in the inner core plate 1 is the rectangle baffle, and the rectangle inner baffle 8 is cut apart into two with the inner baffle, and the inner baffle 8 is the same with the thickness of the inner core plate 1, and the two sides of the inner baffle 8 are equipped with the adhesive linkage of the same material with the inner surface of the inner high-barrier air film bag 1.
For the convenience of the bonding between outermost outer core plate 4 and the 5 internal surfaces of outer high resistant separation gas film bag, can ensure simultaneously that high resistant separation gas film bag 5 is by under the damaged condition outside, can not deviate from between outer core plate 4 and the outer high resistant separation gas film bag 55 to cause vacuum insulation panel's bloating, the bonding of the department of butt joint is sealed to interior high resistant separation gas film bag 2 and outer high resistant separation gas film bag 4 of being convenient for, the utility model discloses further preferred embodiment is, outmost outer core plate 4's surface adheres to there is the viscose layer, or adds in outermost outer core plate 4's raw materials has the viscose raw materials outer high resistant separation gas film bag 5's internal surface adheres to there is the viscose layer.
For the convenience of bonding between outermost outer core plate 4 and the 5 internal surfaces of outer high resistant separation gas film bag, can ensure simultaneously that high resistant separation gas film bag 5 is by under the damaged condition outside, can not deviate from between outer core plate 4 and the outer high resistant separation gas film bag 5 to cause vacuum insulation panels's bloating, the high resistant separation gas film bag 2 and the bonding of outer high resistant separation gas film bag 5 department of sealing butt joint department in being convenient for, the utility model discloses further preferred embodiment still, the viscose layer is hot melt viscose layer, the viscose raw materials is the hot melt viscose.
In order to ensure that the vacuum insulation panel has good heat insulation and fire prevention efficacy, and simultaneously, in order to reduce the manufacturing cost of the vacuum insulation panel, the utility model discloses further preferred embodiment still, inner core board 1, outer core board 4 are made by glass fiber, meteorological silica, nanometer microporous material, aerogel combined material, interior high resistant separates gas film bag 2 and outer high resistant separates gas film bag 5 all can be made with the complex film that contains glass fiber.
In order to avoid external shock or the damage that the fish tail caused to the vacuum insulation panel surface as far as possible, make its surface have certain hardness, toughness and resistant puncture characteristic, the utility model discloses further preferred embodiment still, the resistant puncture strength more than or equal to 21N in the surface on 5 layers of outermost outer high resistant separation gas film bag.
In order to ensure that the vacuum insulation panels have a certain strength, good thermal insulation and fire resistance properties at the same time, and are not easy to break, the utility model discloses a further preferred embodiment is every the outer core layer 4 is filled with the inner vacuum insulation structure layer 3 or the upper outer vacuum insulation structure layer 6.
The manufacturing process of the vacuum heat insulation plate comprises the following steps: the inner core plate 1 is made of glass fiber cotton with the diameter of 3.5-5um and the length of 5-20mm produced by a centrifugal method;
the manufacturing method comprises the following specific steps:
(1) taking glass fiber cotton with the diameter of 1.5-9 um and the length of 5-20mm produced by a centrifugal method;
(2) adding water into glass fiber cotton, stirring uniformly, and then feeding the glass fiber cotton into a slurry preparation tank for dilution to a diluted concentration of 0.3-1%;
(3) feeding the diluted glass fiber cotton slurry into a slurry storage tank;
(4) feeding the slurry in the slurry storage tank into a front box of a net, and then dehydrating and forming the glass fiber cotton by using a forming net to obtain a glass fiber cotton core material blank;
(5) flattening the surfaces of the glass fiber core material blanks in the longitudinal direction and the transverse direction by adopting a compression roller, and adjusting the thickness of the glass fiber core material blanks to make the thicknesses of the glass fiber core material blanks consistent;
(6) putting the shaped glass fiber core material blank into a vacuum negative pressure environment to remove 50-65% of water in the glass fiber core material blank;
(7) then, feeding the glass fiber core material blank with 50% -65% of water removed into a baking oven for drying and curing, wherein the temperature in the baking oven is controlled to be 120-250 ℃, and the baking time is 10-30 minutes; forming a whole glass fiber core material plate after baking;
(8) then cooling the whole glass fiber core material plate to normal temperature;
(9) cutting the whole glass fiber core material plate according to the use requirement to manufacture the standard glass fiber core plate 1;
(10) sequentially arranging 1 glass fiber core board 1, 1 internal clapboard 8 and 1 glass fiber core board 1Entering an inner high-barrier air film bag 2 with an opening at one end for continuous vacuum-pumping treatment, wherein the vacuum-pumping time is 3-20 minutes, and the vacuum degree is 5 x 10- 3Pa~3*100Pa；
(11) Then heating the port of the inner high-barrier air film bag 2, the inner high-barrier air film bag 2 and the glass fiber inner core plate 1 together for hot melting and packaging to prepare an inner vacuum heat insulation structure layer 3;
(12) the manufacturing process of the outer core plate 4 is repeated by the steps 1-9, and edge structures are respectively manufactured and can be integrated with the outer core plate 4;
(13) after the inner vacuum heat insulation structure layer 3 manufactured in the step 11 is arranged in the outer core plate 4, repeating the steps 10-12 to manufacture a second vacuum heat insulation layer;
(14) and repeating the working procedures from 12 th to 13 th for many times if the multilayer vacuum insulation panel needs to be manufactured.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A vacuum insulation panel provided with mounting holes and free of surface damage is characterized in that the vacuum insulation panel comprises at least two vacuum insulation structure layers, namely an inner vacuum insulation structure layer and at least one outer vacuum insulation structure layer wrapped outside the inner vacuum insulation structure layer, the inner vacuum insulation structure layer comprises an inner core plate, a mounting groove of an air suction material is formed in the inner core plate, the air suction material is filled in the mounting groove, an inner high-barrier air film bag is sleeved outside the inner core plate provided with the air suction material, and the inner high-barrier air film bag provided with the inner core plate is vacuumized and heat-sealed by high-vacuum equipment to form the inner vacuum insulation structure layer; the outer vacuum heat insulation structure layer is made by an outer core plate and outer high-barrier air film bags wrapped outside the outer core plate through vacuumizing and heat sealing by high-vacuum heat sealing equipment, the edge of each outer core plate is provided with an edge structure, the edge structure is connected with the outer core plate, or the edge structure and the outer core plate form an integral structure, the outer core plate and the outer high-barrier air film bags wrapped on the outer core plate are repeatedly alternated for multiple times to form a multi-layer vacuum heat insulation structure layer, the inner core plate and the outer core plate are respectively provided with at least one inner mounting hole and an outer mounting hole which correspond to each other in position, and the inner mounting hole and the outer mounting hole isolate the inner mounting hole from the inner core plate and the outer core plate through the inner partition plate and the outer partition plate.
2. The vacuum insulation panel having a mounting hole without fear of surface damage according to claim 1, wherein the inner and outer high-barrier gas film bags comprise 5 or more of a woven glass fiber layer, a nylon layer, an aluminum-plated PET layer, a PET layer, an EVOH layer, an aluminum foil layer, and a PE plastic film layer, which are sequentially laminated, respectively, and are laminated in any order.
3. The vacuum insulation panel provided with mounting holes and free from surface damage according to claim 1, wherein the inner and outer partitions are rectangular or annular, and both surfaces of the inner and outer partitions are provided with bonding layers made of the same material as the inner surfaces of the inner and outer high-barrier gas film bags, and the inner and outer partitions are positioned on the inner and outer core plates by a mold.
4. The vacuum insulation panel provided with mounting holes and free from surface damage according to claim 3, wherein the inner partition plate provided in the inner core plate is a rectangular partition plate, the rectangular partition plate divides the inner core plate into at least two, the thickness of the inner partition plate is the same as that of the inner core plate layer, and the two surfaces of the inner partition plate are provided with bonding layers made of the same material as the inner surface of the inner high barrier air film bag.
5. The vacuum insulation panel having mounting holes without fear of surface breakage according to any one of claims 1 to 4, wherein an adhesive layer is attached to at least an outer surface of the outermost outer core sheet, or an adhesive material is added to a material of the outermost outer core sheet, and an adhesive layer is attached to at least an inner surface of the outer high barrier gas film pouch.
6. The vacuum insulation panel provided with the mounting holes and free from surface damage according to claim 5, wherein the adhesive layer is a hot-melt adhesive layer, and the adhesive material is a hot-melt adhesive.
7. A vacuum insulation panel having mounting holes without fear of surface breakage according to claim 6 wherein said outermost outer high barrier gas film bag layer has a surface puncture resistance of 21N or more.
8. A vacuum insulation panel having mounting holes without fear of surface breakage as claimed in claim 7 wherein each of said outer core sheets is filled with an inner vacuum insulation structural layer or an outer vacuum insulation structural layer thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620597.4U CN211344470U (en) | 2019-09-26 | 2019-09-26 | Vacuum insulation panel provided with mounting holes and free of surface damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620597.4U CN211344470U (en) | 2019-09-26 | 2019-09-26 | Vacuum insulation panel provided with mounting holes and free of surface damage |
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| Publication Number | Publication Date |
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| CN211344470U true CN211344470U (en) | 2020-08-25 |
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| CN201921620597.4U Expired - Fee Related CN211344470U (en) | 2019-09-26 | 2019-09-26 | Vacuum insulation panel provided with mounting holes and free of surface damage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778851A (en) * | 2019-09-26 | 2020-02-11 | 安徽百特新材料科技有限公司 | Vacuum insulation panel provided with mounting holes and free of surface damage |
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2019
- 2019-09-26 CN CN201921620597.4U patent/CN211344470U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778851A (en) * | 2019-09-26 | 2020-02-11 | 安徽百特新材料科技有限公司 | Vacuum insulation panel provided with mounting holes and free of surface damage |
| CN110778851B (en) * | 2019-09-26 | 2021-08-03 | 安徽百特新材料科技有限公司 | Vacuum insulation panel provided with mounting holes and free of surface damage |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |