CN220796766U - Adhesive film for photovoltaic module - Google Patents
Adhesive film for photovoltaic module Download PDFInfo
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- CN220796766U CN220796766U CN202322529254.XU CN202322529254U CN220796766U CN 220796766 U CN220796766 U CN 220796766U CN 202322529254 U CN202322529254 U CN 202322529254U CN 220796766 U CN220796766 U CN 220796766U
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- barrier layer
- layer
- photovoltaic module
- adhesive film
- inorganic barrier
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 42
- 230000004888 barrier function Effects 0.000 claims abstract description 130
- 239000010410 layer Substances 0.000 claims description 179
- 239000012790 adhesive layer Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000000839 emulsion Substances 0.000 claims description 10
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 38
- 230000000903 blocking effect Effects 0.000 abstract description 15
- 230000007062 hydrolysis Effects 0.000 abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000002834 transmittance Methods 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 28
- 239000005020 polyethylene terephthalate Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 18
- 239000005038 ethylene vinyl acetate Substances 0.000 description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 11
- 239000012528 membrane Substances 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000000655 anti-hydrolysis Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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- Photovoltaic Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model discloses an adhesive film for a photovoltaic module, and relates to the technical field of adhesive films. The adhesive film for the photovoltaic module comprises a first organic barrier layer, a first inorganic barrier layer, a first bonding layer, a PET layer, a second bonding layer, a second inorganic barrier layer and a second organic barrier layer from top to bottom. The adhesive film for the photovoltaic module has excellent hydrolysis resistance, ageing resistance and weather resistance, can play a role in blocking water vapor in an ultrahigh mode, can effectively prevent the water vapor from contacting the battery piece, and therefore can improve the photoelectric conversion efficiency and the service life of the photovoltaic module, and solves the problems that the conventional EVA adhesive film is poor in hydrolysis resistance and weather resistance and high in water vapor transmittance.
Description
Technical Field
The utility model relates to the technical field of adhesive films, in particular to an adhesive film for a photovoltaic module.
Background
The photovoltaic module is also called a solar module and consists of a battery piece, a glass piece, a back plate, a photovoltaic adhesive film and an aluminum alloy frame, wherein the glass piece and the back plate are respectively attached to the two sides of the battery piece through the photovoltaic adhesive film, and the battery piece, the glass piece, the back plate and light Fu Jiaomo are integrated through a vacuum lamination technology to form the photovoltaic module.
In the photovoltaic module, the photovoltaic adhesive film can protect a battery on one hand, prolong the service life of the photovoltaic module, enable sunlight to penetrate through the photovoltaic adhesive film to the maximum extent to reach a battery piece on the other hand, and improve the power generation efficiency of the photovoltaic module. Because the battery piece is extremely easy to break, the packaging process is irreversible, and the service life of the photovoltaic module is generally required to be more than 25 years, if the protection effect of the photovoltaic adhesive film is poor, the battery piece can be directly contacted with rain, snow, wind, sand and dust, and the photoelectric conversion efficiency of the battery piece can be seriously affected. Therefore, although the total cost of the photovoltaic module is low, the formation of the photovoltaic adhesive film is a key factor for determining the quality and service life of the photovoltaic module.
The photovoltaic glued membrane that is commonly used in the market at present is the EVA glued membrane, because the main material that the EVA glued membrane adopted is ethylene-vinyl acetate copolymer (EVA), because its self-recognition material characteristic makes the EVA glued membrane mainly play printing opacity, bond and encapsulation effect such as yellowing resistance, but the EVA glued membrane takes place to hydrolyze and weather resistance relatively poor in outdoor long-term use easily, lead to the EVA glued membrane to produce phenomena such as bubble and delamination, this life that can shorten photovoltaic module greatly, the steam separation effect of EVA glued membrane is relatively poor simultaneously, lead to steam to pass through EVA glued membrane contact battery piece easily, thereby lead to photovoltaic module's photoelectric conversion efficiency obviously to reduce.
Disclosure of utility model
The utility model aims to provide an adhesive film for a photovoltaic module, which has excellent hydrolysis resistance, ageing resistance and weather resistance, can play a role in blocking water vapor in an ultrahigh mode, and can effectively prevent the water vapor from contacting a battery piece, so that the photoelectric conversion efficiency and the service life of the photovoltaic module can be improved, and the problems that the conventional EVA adhesive film is poor in hydrolysis resistance and weather resistance and high in water vapor transmittance are solved.
The utility model achieves the purpose by adopting the following technical scheme:
an adhesive film for a photovoltaic module comprises a first organic barrier layer, a first inorganic barrier layer, a first bonding layer, a PET layer, a second bonding layer, a second inorganic barrier layer and a second organic barrier layer;
The upper surface of the second organic barrier layer is covered with the second inorganic barrier layer, the upper surface of the second inorganic barrier layer is covered with the second bonding layer, the upper surface of the second bonding layer is covered with the PET layer, the upper surface of the PET layer is covered with the first bonding layer, the upper surface of the first bonding layer is covered with the first inorganic barrier layer, and the upper surface of the first inorganic barrier layer is covered with the first organic barrier layer.
Preferably, the thickness of the first organic barrier layer is 90 to 110 μm.
Preferably, the thickness of the second organic barrier layer is 90 to 110 μm.
Preferably, the thickness of the first inorganic barrier layer is 25 to 35 μm.
Preferably, the thickness of the second inorganic barrier layer is 25 to 35 μm.
Preferably, the thickness of the first adhesive layer is 15 to 25 μm.
Preferably, the thickness of the second adhesive layer is 15 to 25 μm.
Preferably, the thickness of the PET layer is 45-55 μm.
Preferably, the materials of the first organic barrier layer and the second organic barrier layer are both aqueous fluorocarbon emulsion resins.
Preferably, the material of the first inorganic barrier layer and the second inorganic barrier layer is silicon dioxide.
The technical scheme has the following beneficial effects:
1. the adhesive film for the photovoltaic module comprises a first organic barrier layer, a first inorganic barrier layer, a first bonding layer, a PET layer, a second bonding layer, a second inorganic barrier layer and a second organic barrier layer from top to bottom in sequence, and has excellent anti-hydrolysis performance, ageing resistance and weather resistance through the synergistic effect among a plurality of layer structures, and meanwhile, the adhesive film for the photovoltaic module can play a role in ultrahigh blocking water vapor, can effectively prevent the water vapor from contacting a battery piece, and therefore improves the photoelectric conversion efficiency and the service life of the photovoltaic module.
2. The first organic barrier layer and the second organic barrier layer have excellent weather resistance and water resistance, and have excellent gas barrier capability, and the water vapor transmittance is extremely low; the first inorganic barrier layer and the second inorganic barrier layer can play roles in blocking water vapor and improving thermal stability; the first bonding layer provides a bonding effect for the PET layer and the first inorganic barrier layer, and the second bonding layer provides a bonding effect for the PET layer and the second bonding layer; the PET layer has the functions of weather resistance, heat resistance and water vapor barrier.
Drawings
Fig. 1 is a schematic structural view of a film for a photovoltaic module according to an embodiment of the present utility model;
Wherein: a first organic barrier layer 1, a first inorganic barrier layer 2, a first adhesive layer 3, a PET layer 4, a second adhesive layer 5, a second inorganic barrier layer 6, a second organic barrier layer 7.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
Next, a film for a photovoltaic module according to an embodiment of the present utility model will be described with reference to fig. 1.
The adhesive film for a photovoltaic module of this embodiment includes a first organic barrier layer 1, a first inorganic barrier layer 2, a first adhesive layer 3, a PET layer 4, a second adhesive layer 5, a second inorganic barrier layer 6, and a second organic barrier layer 7;
The upper surface of the second organic barrier layer 7 is covered with a second inorganic barrier layer 6, the upper surface of the second inorganic barrier layer 6 is covered with a second adhesive layer 5, the upper surface of the second adhesive layer 5 is covered with a PET layer 4, the upper surface of the PET layer 4 is covered with a first adhesive layer 3, the upper surface of the first adhesive layer 3 is covered with a first inorganic barrier layer 2, and the upper surface of the first inorganic barrier layer 2 is covered with a first organic barrier layer 1.
In order to solve the problems that the conventional EVA adhesive film is poor in hydrolysis resistance and weather resistance and high in water vapor transmittance, the technical scheme develops an adhesive film for a photovoltaic module, and the adhesive film for the photovoltaic module sequentially comprises a first organic barrier layer 1, a first inorganic barrier layer 2, a first bonding layer 3, a PET layer 4, a second bonding layer 5, a second inorganic barrier layer 6 and a second organic barrier layer 7 from top to bottom. Wherein the first organic barrier layer 1 and the second organic barrier layer 7 have excellent weather resistance and water resistance, and have excellent capability of blocking gas, and the water vapor transmittance is extremely low; the first inorganic barrier layer 2 and the second inorganic barrier layer 6 can play roles in blocking water vapor and improving thermal stability; the first adhesive layer 3 provides an adhesive effect for the PET layer 4 and the first inorganic barrier layer 2, and the second adhesive layer 5 provides an adhesive effect for the PET layer 4 and the second adhesive layer 5; the PET layer 4 has the functions of weather resistance, heat resistance and water vapor barrier. According to the technical scheme, through the synergistic effect among the first organic barrier layer 1, the first inorganic barrier layer 2, the first bonding layer 3, the PET layer 4, the second bonding layer 5, the second inorganic barrier layer 6 and the second organic barrier layer 7, the adhesive film for the photovoltaic module has excellent anti-hydrolysis performance, ageing resistance and weather resistance, can play the role of ultrahigh blocking water vapor, can effectively prevent water vapor from contacting the battery piece, and therefore the photoelectric conversion efficiency of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged.
Further, the adhesive film for the photovoltaic module adopts the organic and inorganic lamination structure, so that the defect development of an oxide layer in a multilayer structure can be prevented, and the effect of ultrahigh water vapor barrier can be achieved.
Specifically, the material adopted by the first bonding layer 3 and the second bonding layer 5 in the technical scheme is acrylic emulsion, the acrylic emulsion has good adhesive force, good water-proof and weather-proof effects and low pollution, meets the environmental protection requirement, can provide bonding effect for the PET layer and the inorganic barrier layers (namely the first inorganic barrier layer 2 and the second inorganic barrier layer 6), and can also play a role in smoothing and filling defects. The PET layer is mainly made of polyethylene terephthalate (PET), has good weather resistance, low permeability of PET to gas and water vapor, and excellent gas resistance, water resistance, oil resistance and peculiar smell resistance.
Further illustratively, the first organic barrier layer 1 has a thickness of 90 to 110 μm.
Further illustratively, the second organic barrier layer 7 has a thickness of 90 to 110 μm.
According to the technical scheme, the first organic barrier layer and the second organic barrier layer are arranged on the outermost surface of the adhesive film for the photovoltaic module and serve as protective layers, the thicknesses of the first organic barrier layer and the second organic barrier layer are set to be 90-110 mu m, the weather resistance and hydrolysis resistance of the adhesive film for the photovoltaic module can be remarkably improved, the effect of better blocking water vapor is achieved, the water vapor is prevented from entering the adhesive film for the photovoltaic module and contacting the battery piece, and if the thicknesses of the first organic barrier layer and the second organic barrier layer are too thin, the weather resistance, the hydrolysis resistance and the water vapor blocking effect cannot achieve better effects; if the thicknesses of the first organic barrier layer and the second organic barrier layer are too thick, the curing effect is affected, and the curing is not easy.
Further, the thickness of the first inorganic barrier layer 2 is 25 to 35 μm.
Further, the thickness of the second inorganic barrier layer 6 is 25 to 35 μm.
According to the technical scheme, the first inorganic barrier layer and the second inorganic barrier layer can play a role in further blocking water vapor, the water vapor is isolated from entering, and the first inorganic barrier layer and the second inorganic barrier layer can play a role in better blocking the water vapor when the thicknesses of the first inorganic barrier layer and the second inorganic barrier layer are 25-35 mu m. If the thicknesses of the first inorganic barrier layer and the second inorganic barrier layer are too thin, the effect of blocking water vapor is not obvious, and if the thicknesses of the first inorganic barrier layer and the second inorganic barrier layer are too thick, the inorganic barrier layer is difficult to be smooth with the organic barrier layer and the bonding layer, so that the defect is overcome.
Further, the thickness of the first adhesive layer 3 is 15 to 25 μm.
Further, the thickness of the second adhesive layer 5 is 15 to 25 μm.
In the technical scheme, when the thicknesses of the first bonding layer and the second bonding layer are 15-25 mu m, the bonding effect is better, and the defects of the first inorganic barrier layer and the second inorganic barrier layer can be overcome. If the thickness of the first bonding layer and the second bonding layer is thinner, the corresponding bonding effect cannot be achieved, and the defects of the first inorganic barrier layer and the second inorganic barrier layer are difficult to fill; if the thicknesses of the first and second inorganic barrier layers are too thick, the corresponding coating cost increases.
Further, the thickness of the PET layer 4 is 45 to 55. Mu.m.
The thickness of the PET layer in the technical scheme is 45-55 mu m, so that the PET layer has better weather resistance, heat resistance and water vapor blocking effects, and if the thickness of the PET layer is too thin, the water vapor blocking effect is poor; if the thickness of the PET layer is too thick, the cost increases.
More preferably, in the present technical solution, the thicknesses of the first organic barrier layer and the second organic barrier layer are both 100 μm, the thicknesses of the first inorganic barrier layer and the second inorganic barrier layer are both 30 μm, the thicknesses of the first adhesive layer and the second adhesive layer are both 20 μm, and the thickness of the PET layer is 50 μm.
Further illustratively, the materials of the first organic barrier layer 1 and the second organic barrier layer 7 are both aqueous fluorocarbon emulsion resins.
The aqueous fluorocarbon emulsion resin is an anionic emulsion of special acrylic esters and special fluororesin copolymers, has excellent weather resistance, water resistance and pollution resistance, has excellent chemical stability, has excellent gas barrier capability and low water vapor permeability. According to the technical scheme, the first organic barrier layer 1 and the second organic barrier layer 7 are formed after the aqueous fluorocarbon emulsion resin is coated and cured, so that the weather resistance, hydrolysis resistance and water vapor blocking effect of the adhesive film for the photovoltaic module can be remarkably improved, and the product quality and the service life of the photovoltaic module are improved.
In addition, the aqueous fluorocarbon emulsion resin has no organic solvent, so the aqueous fluorocarbon emulsion resin has no harm to human bodies, has no pollution to the environment, has better adhesive force, and can remarkably improve the bonding effect between the battery piece and the glass piece and the bonding effect between the battery piece and the back plate.
Further illustratively, the material of both the first inorganic barrier layer 2 and the second inorganic barrier layer 6 is silicon dioxide.
Because the bond length of the silicon dioxide is smaller than the kinetic diameters of water and oxygen molecules, the silicon dioxide can form a barrier to water vapor, so that the effect of water vapor barrier is achieved, meanwhile, the silicon dioxide has excellent thermal stability, and the thermal stability of the adhesive film for the photovoltaic module can be remarkably improved.
It is worth to say that, according to the technical scheme, silicon dioxide is deposited on the surfaces of the first bonding layer 3 and the second bonding layer 5 through a magnetron sputtering method, an electron beam evaporation method or a plasma enhanced chemical vapor deposition method and the like, so that the first inorganic barrier layer 2 and the second inorganic barrier layer 6 are respectively formed, and the effect of water vapor barrier is achieved.
Preferably, the materials of the first inorganic barrier layer 2 and the second inorganic barrier layer 6 are fumed silica, respectively.
Other constitution and the like and operation of the adhesive film for a photovoltaic module according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.
In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The adhesive film for the photovoltaic module is characterized by comprising a first organic barrier layer, a first inorganic barrier layer, a first bonding layer, a PET layer, a second bonding layer, a second inorganic barrier layer and a second organic barrier layer;
The upper surface of the second organic barrier layer is covered with the second inorganic barrier layer, the upper surface of the second inorganic barrier layer is covered with the second bonding layer, the upper surface of the second bonding layer is covered with the PET layer, the upper surface of the PET layer is covered with the first bonding layer, the upper surface of the first bonding layer is covered with the first inorganic barrier layer, and the upper surface of the first inorganic barrier layer is covered with the first organic barrier layer.
2. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the first organic barrier layer is 90 to 110 μm.
3. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the second organic barrier layer is 90 to 110 μm.
4. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the first inorganic barrier layer is 25 to 35 μm.
5. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the second inorganic barrier layer is 25 to 35 μm.
6. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the first adhesive layer is 15 to 25 μm.
7. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the second adhesive layer is 15 to 25 μm.
8. The adhesive film for a photovoltaic module according to claim 1, wherein the thickness of the PET layer is 45 to 55 μm.
9. The adhesive film for a photovoltaic module according to claim 1, wherein the materials of the first organic barrier layer and the second organic barrier layer are both aqueous fluorocarbon emulsion resins.
10. The adhesive film for a photovoltaic module according to claim 1, wherein the materials of the first inorganic barrier layer and the second inorganic barrier layer are both silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322529254.XU CN220796766U (en) | 2023-09-15 | 2023-09-15 | Adhesive film for photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322529254.XU CN220796766U (en) | 2023-09-15 | 2023-09-15 | Adhesive film for photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220796766U true CN220796766U (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322529254.XU Active CN220796766U (en) | 2023-09-15 | 2023-09-15 | Adhesive film for photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220796766U (en) |
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- 2023-09-15 CN CN202322529254.XU patent/CN220796766U/en active Active
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