CN110690306A - Packaging process of EVA (ethylene vinyl acetate) adhesive film - Google Patents
Packaging process of EVA (ethylene vinyl acetate) adhesive film Download PDFInfo
- Publication number
- CN110690306A CN110690306A CN201910986877.5A CN201910986877A CN110690306A CN 110690306 A CN110690306 A CN 110690306A CN 201910986877 A CN201910986877 A CN 201910986877A CN 110690306 A CN110690306 A CN 110690306A
- Authority
- CN
- China
- Prior art keywords
- adhesive film
- eva adhesive
- vacuumizing
- packaging process
- laminated assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002313 adhesive film Substances 0.000 title claims abstract description 55
- 238000012858 packaging process Methods 0.000 title claims abstract description 24
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 title description 50
- 239000005038 ethylene vinyl acetate Substances 0.000 title description 50
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 title description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000010030 laminating Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 239000005357 flat glass Substances 0.000 claims abstract description 7
- 239000003365 glass fiber Substances 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims description 12
- 230000008023 solidification Effects 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000004806 packaging method and process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000002950 deficient Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 8
- 238000003475 lamination Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to the technical field of photovoltaic adhesive films, in particular to an EVA adhesive film packaging process, which comprises the following steps: (1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber; (2) vacuumizing; (3) pressurizing and heating; (4) preserving heat and solidifying; (5) cooling and solidifying; according to the invention, the laminated assembly is clamped and positioned by the clamping piece, so that each layer in the laminated assembly can be prevented from displacing in the laminating and vacuumizing process, the distribution uniformity of the EVA adhesive film among the layers can be ensured, the bubbles in the EVA adhesive film can be exhausted in the vacuumizing process, the power of the photovoltaic assembly is improved, and the service life of the photovoltaic assembly is prolonged; according to the invention, the packaging effect of the EVA adhesive film can be improved and the defective rate is reduced by adjusting and controlling the temperature, pressure and vacuum pumping conditions in the packaging process.
Description
Technical Field
The invention relates to the technical field of photovoltaic adhesive films, in particular to an EVA adhesive film packaging process.
Background
The EVA adhesive film is heated in the packaging process of the battery to generate a crosslinking reaction, and the cured cornea has excellent light transmittance, bonding strength, thermal stability, air tightness, environmental stress cracking resistance, weather resistance, corrosion resistance, electrical property and the like.
The properties of EVA depend mainly on the molecular weight (which can be expressed as melt index MFR) and the content of vinyl acetate (expressed as vA). The EVA adhesive film has an anti-reflection effect on glass, the refractive index of the EVA and the glass is about 1.5, and the EVA has a refractive index closer to that of the glass than air, so that the total reflectivity of the glass/EVA/glass is smaller than that of the glass/air/glass. The EVA adhesive film can absorb most ultraviolet light, so that the solar cell can normally work in the sunlight all year round. The performance of the EVA adhesive film is also influenced by the packaging process of the EVA adhesive film, which generally comprises lamination, vacuumizing, heating, pressurizing, heat preservation and solidification, and cooling, however, because the lamination piece is not fixed after lamination, each component is easy to displace in the vacuumizing process, the distribution of the adhesive film after packaging is uneven, and the service life of the component is influenced.
Disclosure of Invention
The purpose of the invention is: the defects in the prior art are overcome, and the packaging process of the EVA adhesive film is provided, after packaging, the EVA adhesive film is uniformly distributed between glass or a back plate, no air hole exists in the adhesive film, the conversion power of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an EVA adhesive film packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at the temperature of 110-120 ℃, the pressure of 1-2MPa, the heating time of 3-5min and the heating speed of 10-20 ℃/min;
(4) heat preservation and solidification: carrying out constant-temperature curing at a curing temperature;
(5) cooling and solidifying: and (5) solidifying and cooling at constant temperature.
Further, the clamping piece comprises an upper cover and a lower cover, the shape of the upper cover and the shape of the lower cover are equal to the size of the laminated assembly, and the edge of the upper cover and the edge of the lower cover are respectively provided with an upper limiting rod and a lower limiting rod.
Furthermore, a positioning lug is arranged on the upper limiting rod, a positioning hole is arranged on the lower limiting rod, and the positioning lug is located in the positioning hole after the upper limiting rod and the lower limiting rod are tightly pressed.
Further, the temperature for heat preservation and solidification in the step (4) is 136-138 ℃, and the time is 15-20 min.
Further, the method comprises the following steps: and the side surface of the vacuum chamber is provided with a vacuumizing hole, and the vacuumizing hole is connected with the vacuumizing pipe through threads.
Furthermore, the outer diameter of the connecting end surface of the vacuum-pumping pipe and the vacuum-pumping hole is larger than the diameter of the vacuum-pumping hole.
Furthermore, a layer of flexible sealing gasket is arranged between the vacuumizing hole and the vacuumizing pipe.
Further, after cooling and curing in the step (5), the clamping piece is disassembled, the EVA glue with excessive edges is cut off, and the edge is sealed for standby.
The technical scheme adopted by the invention has the beneficial effects that:
according to the invention, the laminated assembly is clamped and positioned by the clamping piece, so that each layer in the laminated assembly can be prevented from displacing in the laminating and vacuumizing process, the distribution uniformity of the EVA adhesive film among the layers can be ensured, the air bubbles in the EVA adhesive film can be exhausted in the vacuumizing process, and the power and the service life of the photovoltaic assembly are improved.
According to the invention, the packaging effect of the EVA adhesive film can be improved and the defective rate is reduced by adjusting and controlling the temperature, pressure and vacuum pumping conditions in the packaging process.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.
An EVA adhesive film packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber; the laminated assembly is compressed through the clamping piece, so that subsequent vacuumizing and heating operations are facilitated, bubbles in the EVA adhesive film can be completely removed during vacuumizing, and the phenomenon that each layer of structure is displaced in the laminating vacuumizing process to influence the packaging effect can be avoided;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at the temperature of 110-120 ℃, the pressure of 1-2MPa, the heating time of 3-5min and the heating speed of 10-20 ℃/min; the heating temperature, pressure, heating time and heating rate all influence the hot melting and curing results of the EVA adhesive film, the EVA adhesive film is heated to soften the EVA firstly in the laminating process, after reaching the molten state, the resin forms fluidity and fills the gaps between the battery pieces, then the EVA is cured at a higher temperature, macromolecules are formed after the crosslinking reaction, if the heating time is longer to the EVA curing temperature, the EVA is not cured due to the thermal decomposition of the crosslinking agent, and bubbles are generated under the condition of too fast heating speed, so the heating temperature and the heating pressure are realized in the invention. The heating time and the temperature rise speed are controlled within the ranges, so that the curing speed can be improved, and bubbles in the EVA adhesive film can be effectively removed.
(4) Heat preservation and solidification: carrying out constant-temperature curing at a curing temperature;
(5) cooling and solidifying: and (5) solidifying and cooling at constant temperature.
The clamping piece includes upper cover and lower cover in this embodiment, the shape of upper cover and lower cover equals with the size of lamination subassembly's size, the edge of upper cover and lower cover has spacing pole and lower spacing pole respectively, and the clamping piece includes upper cover and lower cover to spacing pole and lower spacing pole can be avoided in the setting, the lamination subassembly takes place the displacement at the encapsulation in-process, thereby can guarantee the encapsulation rate of certified products, avoid the glued membrane to distribute unevenly between lamination subassembly, effectively improve encapsulation efficiency, improve photovoltaic module's conversion power and life.
In the embodiment, the upper limiting rod is provided with the positioning lug, the lower limiting rod is provided with the positioning hole, and the positioning lug is protruded into the positioning hole after being compressed.
In this embodiment, the temperature for heat preservation and curing in the step (4) is 136-138 ℃, and the time is 15-20 min.
The side of the vacuum chamber in the embodiment is provided with the vacuumizing hole, the vacuumizing hole is connected with the vacuumizing pipe through threads, and the vacuum degree of the vacuum chamber can be ensured by adopting the structure.
The outer diameter of the connecting end face of the vacuumizing pipe and the vacuumizing hole is larger than the diameter of the vacuumizing hole, and the vacuum degree of the vacuum chamber can be improved by adopting the structure.
In the embodiment, a layer of flexible sealing washer is arranged between the vacuumizing hole and the vacuumizing pipe, and the vacuum degree of the vacuum chamber can be further improved by adopting the structure.
In this embodiment, after cooling and curing in step (5), the clamping member is detached, the EVA glue with excess edges is cut off, and the edge frame is sealed for later use.
Example 1
An EVA adhesive film packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at 110 ℃, 1MPa for 5min and at a heating rate of 10 ℃/min;
(4) heat preservation and solidification: carrying out constant-temperature curing at the curing temperature, wherein the temperature for heat preservation and curing is 136 ℃, and the time is 15 min;
(5) cooling and solidifying: solidifying and cooling at constant temperature; and (4) after cooling and solidification, disassembling the clamping piece, cutting off the EVA glue with excessive edges, and sealing the edge frame at the edges for later use.
The clamping piece comprises an upper cover and a lower cover, the shapes of the upper cover and the lower cover are equal to the size of the laminated assembly, the edges of the upper cover and the lower cover are respectively provided with an upper limiting rod and a lower limiting rod, a positioning lug is arranged on the upper limiting rod, a positioning hole is arranged on the lower limiting rod, the positioning lug is positioned in the positioning hole after being compressed, a vacuumizing hole is formed in the side face of the vacuum chamber, the vacuumizing hole is connected with the vacuumizing tube through threads, the outer diameter of the connecting end face of the vacuumizing tube and the vacuumizing hole is larger than the diameter of the vacuumizing hole, and a layer of flexible sealing gasket is arranged between the vacuumizing hole and the vacuumizing tube.
Example 2
An EVA adhesive film packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at the temperature of 110-120 ℃, the pressure of 2MPa, the heating time of 3min and the heating speed of 10 ℃/min;
(4) heat preservation and solidification: carrying out constant temperature curing at the curing temperature of 138 ℃ for 20 min;
(5) cooling and solidifying: solidifying and cooling at constant temperature; and (4) after cooling and solidification, disassembling the clamping piece, cutting off the EVA glue with excessive edges, and sealing the edge frame at the edges for later use.
The clamping piece comprises an upper cover and a lower cover, the shapes of the upper cover and the lower cover are equal to the size of the laminated assembly, the edges of the upper cover and the lower cover are respectively provided with an upper limiting rod and a lower limiting rod, a positioning lug is arranged on the upper limiting rod, a positioning hole is arranged on the lower limiting rod, the positioning lug is positioned in the positioning hole after being compressed, a vacuumizing hole is formed in the side face of the vacuum chamber, the vacuumizing hole is connected with the vacuumizing tube through threads, the outer diameter of the connecting end face of the vacuumizing tube and the vacuumizing hole is larger than the diameter of the vacuumizing hole, and a layer of flexible sealing gasket is arranged between the vacuumizing hole and the vacuumizing tube.
Example 3
An EVA adhesive film packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at the temperature of 110-120 ℃, the pressure of 1.5MPa, the heating time of 4min and the heating speed of 15 ℃/min;
(4) heat preservation and solidification: carrying out constant-temperature curing at the curing temperature of 138 ℃ for 18 min;
(5) cooling and solidifying: solidifying and cooling at constant temperature; and (4) after cooling and solidification, disassembling the clamping piece, cutting off the EVA glue with excessive edges, and sealing the edge frame at the edges for later use.
The clamping piece comprises an upper cover and a lower cover, the shapes of the upper cover and the lower cover are equal to the size of the laminated assembly, the edges of the upper cover and the lower cover are respectively provided with an upper limiting rod and a lower limiting rod, a positioning lug is arranged on the upper limiting rod, a positioning hole is arranged on the lower limiting rod, the positioning lug is positioned in the positioning hole after being compressed, a vacuumizing hole is formed in the side face of the vacuum chamber, the vacuumizing hole is connected with the vacuumizing tube through threads, the outer diameter of the connecting end face of the vacuumizing tube and the vacuumizing hole is larger than the diameter of the vacuumizing hole, and a layer of flexible sealing gasket is arranged between the vacuumizing hole and the vacuumizing tube.
According to the invention, the laminated assembly is clamped and positioned by the clamping piece, so that each layer in the laminated assembly can be prevented from displacing in the laminating and vacuumizing process, the distribution uniformity of the EVA adhesive film among the layers can be ensured, the air bubbles in the EVA adhesive film can be exhausted in the vacuumizing process, and the power and the service life of the photovoltaic assembly are improved.
According to the invention, the packaging effect of the EVA adhesive film can be improved and the defective rate is reduced by adjusting and controlling the temperature, pressure and vacuum pumping conditions in the packaging process.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The packaging process of the EVA adhesive film is characterized by comprising the following steps: the packaging process comprises the following steps:
(1) laminating: laminating cover plate glass, an EVA adhesive film, a solar cell, a glass fiber sheet and an EVA adhesive film, then pressing the laminated assembly up and down by a clamping piece, and fixing the laminated assembly after pressing in a vacuum chamber;
(2) vacuumizing: placing the laminated assembly on a laminating table in a vacuum chamber, and then performing a vacuum-pumping operation from the side of the vacuum chamber;
(3) pressurizing and heating: heating the laminated assembly in the vacuum chamber at the temperature of 110-120 ℃, the pressure of 1-2MPa, the heating time of 3-5min and the heating speed of 10-20 ℃/min;
(4) heat preservation and solidification: carrying out constant-temperature curing at a curing temperature;
(5) cooling and solidifying: and (5) solidifying and cooling at constant temperature.
2. The packaging process of the EVA adhesive film according to claim 1, wherein: the clamping piece comprises an upper cover and a lower cover, the shapes of the upper cover and the lower cover are equal to the size of the laminated assembly, and the edges of the upper cover and the lower cover are respectively provided with an upper limiting rod and a lower limiting rod.
3. The packaging process of the EVA adhesive film according to claim 2, wherein: the upper limiting rod is provided with a positioning lug, the lower limiting rod is provided with a positioning hole, and after the upper limiting rod and the lower limiting rod are tightly pressed, the positioning lug is positioned in the positioning hole.
4. The packaging process of the EVA adhesive film according to claim 1, wherein: the temperature for heat preservation and solidification in the step (4) is 136-138 ℃, and the time is 15-20 min.
5. The packaging process of the EVA adhesive film according to claim 1, wherein: and the side surface of the vacuum chamber is provided with a vacuumizing hole, and the vacuumizing hole is connected with the vacuumizing pipe through threads.
6. The packaging process of the EVA adhesive film according to claim 5, wherein: the outer diameter of the connecting end face of the vacuum-pumping pipe and the vacuum-pumping hole is larger than the diameter of the vacuum-pumping hole.
7. The packaging process of the EVA adhesive film according to claim 5, wherein: and a layer of flexible sealing gasket is arranged between the vacuumizing hole and the vacuumizing pipe.
8. The packaging process of the EVA adhesive film according to claim 1, wherein: and (5) after cooling and curing, disassembling the clamping piece, cutting off the EVA glue with excessive edges, and sealing the edge frame at the edges for later use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986877.5A CN110690306A (en) | 2019-10-17 | 2019-10-17 | Packaging process of EVA (ethylene vinyl acetate) adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986877.5A CN110690306A (en) | 2019-10-17 | 2019-10-17 | Packaging process of EVA (ethylene vinyl acetate) adhesive film |
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|---|---|
| CN110690306A true CN110690306A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910986877.5A Pending CN110690306A (en) | 2019-10-17 | 2019-10-17 | Packaging process of EVA (ethylene vinyl acetate) adhesive film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193077A (en) * | 2021-04-06 | 2021-07-30 | 湖北美格新能源科技有限公司 | Solar module laminating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113193077A (en) * | 2021-04-06 | 2021-07-30 | 湖北美格新能源科技有限公司 | Solar module laminating method |
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