CN103426958B - A kind of solar battery back film - Google Patents
A kind of solar battery back film Download PDFInfo
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- CN103426958B CN103426958B CN201310388388.2A CN201310388388A CN103426958B CN 103426958 B CN103426958 B CN 103426958B CN 201310388388 A CN201310388388 A CN 201310388388A CN 103426958 B CN103426958 B CN 103426958B
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- 229920000728 polyester Polymers 0.000 claims abstract description 48
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 7
- 230000004927 fusion Effects 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims description 16
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 13
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 13
- 239000005042 ethylene-ethyl acrylate Substances 0.000 claims description 9
- 239000004698 Polyethylene (PE) Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 7
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000005043 ethylene-methyl acrylate Substances 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 claims description 5
- 239000004702 low-density polyethylene Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002725 Thermoplastic elastomer Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 102
- 238000000034 method Methods 0.000 abstract description 9
- 230000001070 adhesive Effects 0.000 abstract description 8
- 239000011229 interlayer Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000010408 film Substances 0.000 description 32
- 239000004594 Masterbatch (MB) Substances 0.000 description 15
- 239000005020 polyethylene terephthalate Substances 0.000 description 13
- 239000002994 raw material Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 210000003128 Head Anatomy 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000004721 Polyphenylene oxide Substances 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- 238000009826 distribution Methods 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 241000353097 Molva molva Species 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000001105 regulatory Effects 0.000 description 4
- ZNAMMSOYKPMPGC-HTOAHKCRSA-N (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-(2-phenylethylsulfanyl)oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1SCCC1=CC=CC=C1 ZNAMMSOYKPMPGC-HTOAHKCRSA-N 0.000 description 3
- 229920002803 Thermoplastic polyurethane Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000029578 entry into host Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon(0) Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Abstract
A kind of solar battery back film, described notacoria includes base membrane layer and tack coat, described base membrane layer is by weathering polyester layer, polyester layer and bonded polyester layer by three-layer co-extruded and carry out biaxial tension film forming, and described tack coat is by the bonded polyester layer film forming of tackifying resin fusion extrusion casting to base membrane layer.There is between each layer of the base membrane layer of notacoria of the present invention the adhesive property of excellence, make base membrane layer have weather resisteant and cementability concurrently simultaneously；By fusion extrusion casting tack coat on base membrane layer, making effectively to bond between the bonded polyester layer in tack coat and base membrane layer, the cohesive force between overcoming because of each layer declines because the interlayer occurred divides de-phenomenon, improves the service life of battery component.The present invention does not use adhesive, environmental protection, and technique is simple, reduces production cost.
Description
Technical field
The invention belongs to new energy field, particularly to a kind of solar battery back film.
Background technology
Solaode is the device directly luminous energy being changed into electric energy by photoelectric effect, has permanent, spatter property and the big advantage of motility three.Nowadays, solaode by substantial amounts of use in each technical field.
Solar module is typically a laminated construction, mainly include surface layer of glass, EVA sealant layer, solar battery sheet, EVA sealant layer and solar battery back film, the Main Function of solar battery back film is the overall mechanical strength improving solar module, affects the service life of battery component it can in addition contain prevent steam from penetrating in sealant.
In prior art, solar battery back film is typically made up of weathering layer, base material and tack coat three layers, and weathering layer is generally fluorine material, causes the cost of solar battery back film to remain high because the price of fluorine material is higher, meanwhile, fluorine material there is also not degradation-labile defect.It addition, weathering layer and tack coat are typically compounded in the both sides of base material respectively by adhesive, but there are the following problems: (1) adhesive contains substantial amounts of solvent and do not meets environmental requirement；(2) complicated process of preparation, cost is high；(3) after life-time service, because the cohesive force between each layer declines because occurring that interlayer divides de-phenomenon, thus lose stop the invasion solar module such as steam should have effect, cause the cell piece within solar module etc. impaired, affect the service life of battery component.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming prior art, it is provided that a kind of solar battery back film, and described notacoria is prepared by three-layer co-extruded melted casting technique, environmental protection, and technique is simple, and interlayer adhesion is high.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of solar battery back film, described notacoria includes base membrane layer and tack coat, described base membrane layer is by weathering polyester layer, polyester layer and bonded polyester layer by three-layer co-extruded and carry out biaxial tension film forming, and described tack coat is by the bonded polyester layer film forming of tackifying resin fusion extrusion casting to base membrane layer.
In above-mentioned solar battery back film, in described bonded polyester layer, the content of adhesion resin is 10% ~ 30%.
In above-mentioned solar battery back film, adhesion resin in described bonded polyester layer is selected from polypropylene (PP), polymethyl methacrylate (PMMA), polyethylene terephthalate-1,4-CHDM ester (PETG), Polyurethane Thermoplastic Elastomer (TPU).
In above-mentioned solar battery back film, the described tackifying resin in tack coat is selected from polyethylene (PE), Low Density Polyethylene (LDPE), ethylene-vinyl acetate copolymer (EVA), ethylene ethyl acrylate copolymer (EEA), ethylene butyl acrylate copolymer (EBA), ethylene methyl acrylate copolymer (EMA).
In above-mentioned solar battery back film, the thickness of described tack coat is 5 ~ 60 μm, preferably 10 ~ 30 μm.
In above-mentioned solar battery back film, the thickness of described base membrane layer is 40 ~ 350 μm, preferably 100 ~ 250 μm.
Compared with prior art, the invention have the benefit that
1. present invention, avoiding the use of adhesive, overcome the environmental pollution caused because using substantial amounts of solvent in prior art；
2. the present invention is by three-layer co-extruded and carry out biaxial tension and obtain base membrane layer, has the adhesive property of excellence, make base membrane layer have weather resisteant and cementability concurrently simultaneously between each layer of base membrane layer；And by fusion extrusion casting tack coat on base membrane layer, make effectively to bond between the bonded polyester layer in tack coat and base membrane layer, the cohesive force between overcoming because of each layer declines because the interlayer occurred divides de-phenomenon, improves the service life of battery component；
3. the present invention is by three-layer co-extruded and only need to the most once be cast after carrying out biaxial tension and i.e. can get notacoria product, it is no longer necessary to other preparation process, compared with the preparation technology of known notacoria, present invention process is simply efficient, improves the yield rate of product；Preparation process uses weatherability polyester layer replacement fluorine material, greatly reduces production cost.
Detailed description of the invention
Solar battery back film in the present invention includes base membrane layer and tack coat, base membrane layer by weathering polyester layer, polyester layer and bonded polyester layer by three-layer co-extruded and carry out biaxial tension film forming, described three-layer co-extrusion method uses known extrusion method, three extruders are i.e. used bonded polyester layer raw material, polyester layer raw material and weatherable polyether layer raw material to be melted respectively, three runner die heads are entered by distribution block, be cast after converging at die head exit on cold drum, finally carry out vertical drawing, horizontal draw biaxial tension after form the base membrane layer with weatherability.
Described polyester layer is formed through melt extruding by the PET master batch section sold on market and bright chip；nullIn order to obtain the base membrane layer with more good weatherability properties，The present invention is provided with weatherable polyether layer in the side of polyester layer，Owing to weatherable polyether layer and polyester layer use co-extrusion stretching film forming to be integrally forming and will not be layered，Improve the bond effect of interlayer，Simultaneously because use weatherability polyester layer to substitute fluorine material i.e. ensure that weather resistance also reduces production cost，Described weathering polyester layer is by the weather-proof PET section sold on market、Masterbatch section and bright chip melt extrude and are formed，The most weather-proof PET section can be FR530-NC and FR530-BK of E.I.Du Pont Company of Japan，Japan Japan AF8305，Dupont RE19045 and 543-LBK，Mitsubishi N330-NC，Polyplastics BN9015 etc.，And weather-proof PET section content can be arbitrary proportion，Preferably content is 10% ~ 30%；In order to obtain there is the base membrane layer of more good adhesive property with tack coat, the present invention is provided with bonded polyester layer in the side that polyester layer contacts with tack coat, owing to bonded polyester layer and polyester layer use co-extrusion stretching film forming to be integrally forming and will not be layered, bonded polyester layer and tack coat also have good bond effect and can improve the bond effect of base membrane layer and tack coat further simultaneously.Bonded polyester layer is melt extruded by commercially available adhesion resin, PET master batch section and bright chip and is formed, and binding resin therein can be selected from vistanex, polyurethane, acrylic resin, the combination of one or more in stated polyesters.These resins are because having good hot melt and caking property, base membrane layer can be made to strengthen with the cohesive force of bonding interlayer, wherein optimization polypropylene (PP), polymethyl methacrylate (PMMA), polyethylene terephthalate-1,4-cyclohexanedimethanoester ester (PETG), Polyurethane Thermoplastic Elastomer (TPU), the content of adhesion resin be can be arbitrary proportion, preferably content be 10% ~ 30%.
From the viewpoint of the manufacturing process, the thickness range of the base membrane layer of the present invention is 40 ~ 350 μm, the most preferably 100 ~ 250 μm.If thickness is higher than 350 μm with less than 40 μm, preparation technology cannot meet.
In the present invention tack coat by the bonded polyester layer of tackifying resin fusion extrusion casting to base membrane layer film forming, described tack coat tackifying resin is selected from ethene polymers, such as polyethylene (PE), Low Density Polyethylene (LDPE), ethylene-vinyl acetate copolymer (EVA), ethylene ethyl acrylate copolymer (EEA), ethylene butyl acrylate copolymer (EBA), ethylene methyl acrylate copolymer (EMA).The thickness of described tack coat is 5 ~ 60 μm, if the thickness of tack coat is more than 60 μm, then tie layer resins consumption too much causes production cost to raise, and is unsatisfactory for the light-weighted effect of solar battery back film；If the thickness of tack coat is less than 5 μm, then due to not formed abundant moistening and contact point by adhesive surface, it is impossible to reach the requirement of cohesive force；Preferred thickness is 10 ~ 30 μm.
Employed in the present invention melt extrude equipment be known to melt extrude equipment, stretch processes uses known thin film drawing process.
Below in conjunction with specific embodiment, the present invention is further illustrated, but is not limited to this.
Embodiment 1
The raw material PET master batch of polyester layer is cut into slices and bright chip mix after carry out pre-crystallized and dried subsequently into single screw extrusion machine heating and melting, simultaneously by the raw material of weatherable polyether layer (containing 10%
E.I.Du Pont Company of FR530-NC(Japan system) weather-proof PET section, masterbatch section and bright chip mix) and bonded polyester layer dispensing (containing 10% polypropylene (PP) adhesion resin, masterbatch section and bright chip mix) enter double screw extruder melt respectively, three runner die heads are entered by distribution block, after converging at die head exit, the melt in viscous state is cast being cooled rapidly at Leng Gushang of uniform rotation, being allowed to form unformed slab, slab obtains the base membrane layer that thickness is 40 μm after biaxial tension.
Polypropylene (PP) is added in the hopper of extruder, by heating and the shear action of screw rod of extruding machine barrel, it is made to be become melt flow stream by graininess, again by the molding effect of mouth die, obtain polypropylene (PP) co-polymer membrane of melt shape, and fused film is cast on the tack coat side of base membrane layer, by regulating the rotating speed of extruder screw, form the tack coat that thickness is 5 μm, obtain solar battery back film after drying.Test its performance.
Embodiment 2
The feed proportioning PET master batch of polyester layer is cut into slices and bright chip mix after carry out pre-crystallized and dried subsequently into single screw extrusion machine heating and melting, simultaneously by weatherable polyether layer raw material (containing 20%
E.I.Du Pont Company of FR530-BK(Japan system) weather-proof PET section, masterbatch section and bright chip mix) and bonded polyester layer raw material (containing 20% polymethyl methacrylate (PMMA) adhesion resin, masterbatch section and bright chip mix) enter double screw extruder melt respectively, three runner die heads are entered by distribution block, after converging at die head exit, the melt in viscous state is cast being cooled rapidly at Leng Gushang of uniform rotation, being allowed to form unformed slab, slab obtains the base membrane layer that thickness is 100 μm after biaxial tension.
Ethylene-vinyl acetate copolymer (EVA) is added in the hopper of extruder, by heating and the shear action of screw rod of extruding machine barrel, it is made to be become melt flow stream by graininess, again by the molding effect of mouth die, obtain ethylene-vinyl acetate copolymer (EVA) co-polymer membrane of melt shape, and fused film is cast on the bonded polyester layer side of base membrane layer, by regulating the rotating speed of extruder screw, form the tack coat that thickness is 10 μm, be dried to obtain solar battery back film.Test its performance.
Embodiment 3
Pre-crystallized and dried is carried out subsequently into single screw extrusion machine heating and melting, simultaneously by weatherable polyether layer raw material (containing 30% after the section of polyester layer raw material PET master batch and bright chip being mixed
N330-NC(MIT system) weather-proof PET section, masterbatch section and bright chip mix) and bonded polyester layer raw material (containing 15% polyethylene terephthalate-1, 4-cyclohexanedimethanoester ester (PETG) adhesion resin, masterbatch section and bright chip mix) enter double screw extruder melt respectively, three runner die heads are entered by distribution block, after converging at die head exit, the melt in viscous state is cast being cooled rapidly at Leng Gushang of uniform rotation, it is allowed to form unformed slab, slab obtains the base membrane layer that thickness is 250 μm after biaxial tension.
Ethylene ethyl acrylate copolymer (EEA) is added in the hopper of extruder, by heating and the shear action of screw rod of extruding machine barrel, it is made to be become melt flow stream by graininess, again by the molding effect of mouth die, obtain ethylene ethyl acrylate copolymer (EEA) co-polymer membrane of melt shape, and fused film is cast on the bonded polyester layer side of base membrane layer, by regulating the rotating speed of extruder screw, form the tack coat that thickness is 30 μm, be dried to obtain solar battery back film.Test its performance.
Embodiment 4
Pre-crystallized and dried is carried out subsequently into single screw extrusion machine heating and melting, simultaneously by weatherable polyether layer raw material (containing 15% after the section of polyester layer raw material PET master batch and bright chip being mixed
543-LBK(du pont company system) weather-proof PET section, masterbatch section and bright chip mix) and bonded polyester layer raw material (30% Polyurethane Thermoplastic Elastomer (TPU) adhesion resin, masterbatch section and bright chip mix) enter double screw extruder and melt respectively, three runner die heads are entered by distribution block, after converging at die head exit, the melt in viscous state is cast being cooled rapidly at Leng Gushang of uniform rotation, being allowed to form unformed slab, slab obtains, through biaxial tension, the base membrane layer that thickness is 350 μm.
Ethylene methyl acrylate copolymer (EMA) is added in the hopper of extruder, by heating and the shear action of screw rod of extruding machine barrel, it is made to be become melt flow stream by graininess, again by the molding effect of mouth die, obtain ethylene methyl acrylate copolymer (EMA) co-polymer membrane of melt shape, and fused film is cast on the bonded polyester layer side of base membrane layer, by regulating the rotating speed of extruder screw, form the tack coat that thickness is 60 μm, be dried to obtain solar battery back film.Test its performance.
Comparative example
It is coating polyurethane-type binding agent liquid on 250 μm PET film sides at thickness, after high temperature drying, the modified, weather resisting PET film of 80 μm (Yi Huadong beautiful mylar company limited produce) is fitted therewith.Opposite side in PET film uses identical method to be combined PE thin film, i.e. obtains solar battery back film.Survey its performance.
Table 1: each embodiment performance data table
| Embodiment | Weathering layer adhesion strength (N/cm) | Tack coat adhesion strength (N/cm) | Adhesion strength (N/cm) with encapsulating material EVA | Weatherability is tested |
| Embodiment 1 | Not stratified | 14 | 80 | Pass through |
| Embodiment 2 | Not stratified | 18 | 100 | Pass through |
| Embodiment 3 | Not stratified | 16 | 90 | Pass through |
| Embodiment 4 | Not stratified | 16 | 80 | Pass through |
| Comparative example | 6 | 6 | 60 | Pass through |
In table, adhesion strength is tested according to standard GB/T/T8808；Weatherability uses Q-Sun Xe-3-H type xenon lamp weathering test case, establishing criteria ISO
4892-2 tests.
By the performance data in table it can be seen that the present invention provide the adhesion strength of solar battery back film weathering layer, the adhesion strength of tack coat and and encapsulating material EVA between adhesion strength, significantly larger than use the performance of compound solar battery back film；The weathering performance of notacoria is also fully able to meet needs simultaneously.
Claims (7)
1. a solar battery back film, it is characterized in that, described notacoria includes base membrane layer and tack coat, described base membrane layer is by weathering polyester layer, polyester layer and bonded polyester layer by three-layer co-extruded and carry out biaxial tension film forming, and described tack coat is by the bonded polyester layer film forming of tackifying resin fusion extrusion casting to base membrane layer；
Containing adhesion resin in described bonded polyester layer, adhesion resin is the combination of one or more in polypropylene, polymethyl methacrylate, polyethylene terephthalate-1,4-CHDM ester, Polyurethane Thermoplastic Elastomer.
Solar battery back film the most according to claim 1, it is characterised in that in bonded polyester layer, the content of adhesion resin is 10% ~ 30%.
Solar battery back film the most according to claim 2, it is characterized in that, the tackifying resin in described tack coat is the one in polyethylene, Low Density Polyethylene, ethylene-vinyl acetate copolymer, ethylene ethyl acrylate copolymer, ethylene butyl acrylate copolymer or ethylene methyl acrylate copolymer.
Solar battery back film the most according to claim 3, it is characterised in that the thickness of described tack coat is 5 ~ 60 μm.
Solar battery back film the most according to claim 4, it is characterised in that the thickness of described tack coat is 10 ~ 30 μm.
Solar battery back film the most according to claim 5, it is characterised in that the thickness of described base membrane layer is 40 ~ 350 μm.
Solar battery back film the most according to claim 6, it is characterised in that the thickness of described base membrane layer is 100 ~ 250 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388388.2A CN103426958B (en) | 2013-06-13 | 2013-08-30 | A kind of solar battery back film |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233916 | 2013-06-13 | ||
| CN201310233916.7 | 2013-06-13 | ||
| CN2013102339167 | 2013-06-13 | ||
| CN201310388388.2A CN103426958B (en) | 2013-06-13 | 2013-08-30 | A kind of solar battery back film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103426958A CN103426958A (en) | 2013-12-04 |
| CN103426958B true CN103426958B (en) | 2016-11-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518971A (en) * | 2008-02-29 | 2009-09-02 | E.I.内穆尔杜邦公司 | Polyester laminated film and solar panel using same |
| JP2010272834A (en) * | 2009-05-25 | 2010-12-02 | Dengiken:Kk | Backsheet for solar cell and solar cell module using the same |
| CN202319195U (en) * | 2011-11-25 | 2012-07-11 | 宁波长阳科技有限公司 | Solar cell backplane |
| CN102779880A (en) * | 2012-08-13 | 2012-11-14 | 乐凯胶片股份有限公司 | Polyester tandem solar battery back film |
| CN102983193A (en) * | 2012-11-26 | 2013-03-20 | 山东东岳高分子材料有限公司 | High-cohesiveness solar battery rear panel film and production method thereof |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518971A (en) * | 2008-02-29 | 2009-09-02 | E.I.内穆尔杜邦公司 | Polyester laminated film and solar panel using same |
| JP2010272834A (en) * | 2009-05-25 | 2010-12-02 | Dengiken:Kk | Backsheet for solar cell and solar cell module using the same |
| CN202319195U (en) * | 2011-11-25 | 2012-07-11 | 宁波长阳科技有限公司 | Solar cell backplane |
| CN102779880A (en) * | 2012-08-13 | 2012-11-14 | 乐凯胶片股份有限公司 | Polyester tandem solar battery back film |
| CN102983193A (en) * | 2012-11-26 | 2013-03-20 | 山东东岳高分子材料有限公司 | High-cohesiveness solar battery rear panel film and production method thereof |
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Address after: 072150 No. 6, Jianye Road, Mancheng Economic Development Zone, Mancheng District, Baoding City, Hebei Province Patentee after: LUCKY FILM Co.,Ltd. Address before: 071054, 6 Kennan Avenue, Baoding, Hebei Patentee before: LUCKY FILM Co.,Ltd. |