CN102632611B - Solar cell packaging glue film - Google Patents
Solar cell packaging glue film Download PDFInfo
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- CN102632611B CN102632611B CN201210127823.1A CN201210127823A CN102632611B CN 102632611 B CN102632611 B CN 102632611B CN 201210127823 A CN201210127823 A CN 201210127823A CN 102632611 B CN102632611 B CN 102632611B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention relates to a preparation method of a solar cell packaging glue film, and the method comprises the following steps of: 1, mixing and uniformly stirring a cross-linking agent, an ultraviolet light absorbing agent, an ultraviolet light stabilizing agent, a rare earth light conversion agent, an antioxidant BHT (butylated hydroxytoluene), a plasticizer, an ethylene-vinyl acetate copolymer (EVA) and low-density polyethylene; 2, carrying out melt extrusion on a mixture obtained in the step 1 on a three-layer co-extrusion film blowing machine to obtain a molten mass; 3, air-cooling the molten mass obtained in the step 2 at a temperature of 15-21 DEG C for 30-40 minutes, wherein the air speed is 10-13m/s; 4, tensioning the air-cooled molten mass in the step 3 on the three-layer co-extrusion film blowing machine to obtain a glue film; and 5, cutting the rubber film obtained in the step 4 on a cutting machine to obtain the glue film with required size. According to the invention, the service life of a solar photovoltaic system is prolonged, and photoelectric conversion efficiency of a photovoltaic assembly is increased.
Description
Technical field
The present invention relates to a kind of glued membrane, especially a kind of packaging adhesive film for solar cell.
Background technology
Solar energy is inexhaustible, nexhaustible clean energy resource, and the exhaustion and the earth environment pollution problem that utilize solar energy to solve the energy are the most direct and effective methods that current people propose.Developing solar energy has become the strategic decision of countries in the world sustainable development source.In the energy resource structure of current China, coal, oil and natural gas have accounted for the overwhelming majority.In China's energy resource structures in 2000, coal, oil and natural gas proportion are 93%, and water power and nuclear power proportion are 7%, and it is extremely low to take the shared ratio of new forms of energy that solar energy and wind energy be representative.To the year two thousand twenty, China's GDP quadrupled than 2000, was taking into full account under technological progress, economic restructuring and effective energy-conservation prerequisite, and demand for energy also will reach 25 ~ 3,300,000,000 tons of standard coals.If according to the current U.S. criterion calculation of 3 tons of oil consumptions per capita, the petroleum consumption of China will surpass the supply in 4,000,000,000 tons, the whole world at present.The energy resources supply of Zhe Jiangdui China brings huge challenge.Therefore, in order to keep China's sustained economic growth and social civilization level constantly to improve, except transforming mode of economic growth, making great efforts, improve energy efficiency, the new forms of energy such as development solar energy will become the emphasis of national energy development strategy.
In recent years, the height of energy future development is based in developed country, actively promotes the development of photovoltaic industry, puts into effect support policy, significantly drops in advance, and preemption techniques forward position, makes photovoltaic industry become one of the fastest industry of the world development beginning of this century.Whole world solar cell yield is surged to the 7241MW of 2008 from the 561MW of 2002, and annual growth reaches 40% left and right.The cumulative production of global solar battery in 2008 and installation amount have all reached 19.5GW.US President Barack Obama's declaration, regenerative resource (comprising solar energy, wind energy and geothermal energy) electric power accounts for the ratio to 2012 year of total electricity consumption will bring up to 10%, by 2025, bring up to 25%.In the plan > > of < < low-carbon (LC) social action of Japan issue, propose the year two thousand twenty photovoltaic and add up installation amount and reach 14GW, reach 53GW to the year two thousand thirty.
Photovoltaic technology (Photovoltaic) is the technology converting solar energy into electrical energy.In solar energy photovoltaic system, most important parts are solar cells, and it is the device of collecting sunshine and carrying out photovoltaic conversion, and a large amount of battery combination just can be formed to photovoltaic system together.The material that carries out photovoltaic conversion in solar cell is mainly silicon wafer at present; if but silicon wafer is directly exposed in atmosphere; its opto-electronic conversion function can decay; need to adopt a kind of encapsulating material transparent, ageing-resistant, that caking property is good that silicon wafer is sealed for this reason; and with the cover glass on upper strata and the protective material TPT(polyvinyl fluoride composite membrane of lower floor) be bonded as one, thereby form solar module.
Solar cell package material in use will play following effect: (1) support and fixedly silicon wafer; (2) keep the high permeability (initial transmission >=91%) of sunshine; (3) the isolation environmental factor harmful to silicon wafer; (4) there is electric insulation effect; (5) there is conduction of heat.In addition, solar cell package material also should have the service life matching with silicon wafer.
Initial stage of development at solar cell, people once adopted polyvinyl butyral resin (PVB) film and heat cross-linking type silicon rubber (liquid state) as the packaging adhesive film of solar cell, but because price is high, performance or constructing operation is improper is eliminated.The beginning of the eighties in last century, do a lot of work around the exploitation of used for solar batteries encapsulating material in Jet Propulsion and Springborn laboratory, they are first according to the instructions for use of solar cell, proposed the characteristic that encapsulating material should possess, and proposed accordingly using polyvinyl chloride homopolymer and copolymer, polyester, polystyrene, polyolefin homopolymer and copolymer, polyvinyl alcohol, polyacrylic acid etc. as candidate material; Again according to features such as the light transmission of material, machinability, prices, filter out ethylene-vinyl acetate copolymer (EVA) and ethylene-methyl methacrylate methyl terpolymer (EMMA) subsequently; Finally, according to some indexs such as light transmittance, adhesive strength, electrical insulating property, security, heat endurances, elect EVA glued membrane as desirable cell package material.At present, the manufacturer of solar module generally adopts EVA as encapsulating material all over the world.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of packaging adhesive film for solar cell is provided, can extend on the one hand the service life of solar energy photovoltaic system, can also improve the photoelectric transformation efficiency of photovoltaic module simultaneously.
According to technical scheme provided by the invention, the preparation method of described packaging adhesive film for solar cell, its component ratio is counted by weight, comprises following processing step:
(1) 7 ~ 10 parts of crosslinking agents, 6 ~ 10 parts of UV absorbers, 5 ~ 8 parts of UV light stabilizing agents, 6.5 ~ 10 parts of rare-earth light conversion agents, 7 ~ 10 parts of antioxidant BHTs, 5.5 ~ 10 parts of plasticizer, 18 ~ 25 parts of ethylene-vinyl acetate copolymers (EVA), 4 ~ 9 parts of low density polyethylene (LDPE)s are mixed, stir, mixing time is 25 ~ 35min, and mixing speed is 80 ~ 100 revs/min;
(2) mixture step (1) being obtained melt extrudes and obtains molten mass on three-layer co-extruded inflation film manufacturing machine, extrusion pressure is 0.2 ~ 0.3MPa, and the temperature in three-layer co-extruded inflation film manufacturing machine 6th district is respectively: 160 ~ 165 ℃ of district's temperature, 165 ~ 170 ℃ of two district's temperature, 175 ~ 180 ℃ of three district's temperature, 180 ~ 185 ℃ of four district's temperature, 185 ~ 190 ℃ of five district's temperature, 190 ~ 195 ℃ of six district's temperature;
(3) it is cooling that molten mass step (2) being obtained carries out wind, and chilling temperature is 15 ℃ ~ 21 ℃, and be 30min ~ 40min cool time, and wind speed is 10 ~ 13 m/s;
(4) will on three-layer co-extruded inflation film manufacturing machine, carry out membrane through the cooled molten mass of step (3) wind and obtain glued membrane, the temperature in three-layer co-extruded blow moulding machine 6th district is respectively: 160 ~ 165 ℃ of district's temperature, 165 ~ 170 ℃ of two district's temperature, 175 ~ 180 ℃ of three district's temperature, 180 ~ 185 ℃ of four district's temperature, 185 ~ 190 ℃ of five district's temperature, 190 ~ 195 ℃ of six district's temperature;
(5) glued membrane step (4) being obtained is cut the glued membrane that obtains required size on cutting machine.
Also comprise step (6) calendering formation: the glued membrane that step (5) is obtained rolls on embossing machine, in the surface pressure of glued membrane, make required decorative pattern.
Described crosslinking agent is iso-cyanuric acid triallyl ester.
Packaging adhesive film for solar cell of the present invention can extend the service life of solar energy photovoltaic system on the one hand, can also improve the photoelectric transformation efficiency of photovoltaic module simultaneously, and this is significant for the good solar energy photovoltaic system of exploitation cost performance.
The specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Antioxidant BHT used in the present invention can adopt commercially available antioxidant BHT, the bright Sheng antioxidant BHT for the sale of Shanghai Kai Yin Chemical Co., Ltd. using in embodiments of the invention.
The crosslinking agent that the present invention uses is iso-cyanuric acid triallyl ester, and outward appearance is white powder, and the crosslinking agent using in the embodiment of the present invention adopts Shanghai Fang Rui to reach the crosslinking agent TAIC of chemicals Co., Ltd.
Ultra-violet absorber used in the present invention is not specifically limited, only otherwise goal of the invention of the present invention is produced to restriction, as the ultra-violet absorber (UV-326) that can adopt Shanghai Fu Qi Chemical Co., Ltd. to produce, the ultraviolet ray of absorbing wavelength 270 ~ 380nm effectively, with antioxidant and with there being cooperative effect.
UV light stabilizing agent used in the present invention is not specifically limited, only otherwise goal of the invention of the present invention is produced to restriction.UV light stabilizing agent claims again light stabilizer, UV absorbers, ultra-violet stabilizer, ultra-violet absorber, is that a class is added in polymer product, can suppress the material of ultraviolet light to macromolecular material photodegradation.Generally there is light shield, absorb ultraviolet ray, quencher excitation state or catch the functions such as free radical.Ultra-violet absorber kind comprises salicylate class, benzophenone, benzotriazole, triazines, group-substituted acrylonitrile and oxalamides etc.What the embodiment of the present invention adopted is the light stabilizer 622 of Nanjing Holley bright science, industry and trade Co., Ltd, and chemical name is succinic acid and (4-hydroxyl-2, the polymer of 2,6,6-tetramethyl-1-piperidine alcohols), and molecular formula is C
15n+1h
25n+ 4O
4n+1n.
Rare-earth light conversion agent used in the present invention is not specifically limited, only otherwise goal of the invention of the present invention is produced to restriction.
Plasticizer used in the present invention is not specifically limited, only otherwise goal of the invention of the present invention is produced to restriction, as can adopt Hang Zhoudong open petrochemical industry Co., Ltd plasticizer H110, raise the EVA(V5110J of sub-petrochemical industry-BASF Co., Ltd).
Embodiment mono-: a kind of preparation method of packaging adhesive film for solar cell, and its component ratio is counted by weight, comprises following processing step:
(1) 7 parts of crosslinking agents, 6 parts of UV absorbers, 5 parts of UV light stabilizing agents, 6.5 parts of rare-earth light conversion agents, 7 parts of antioxidant BHTs, 5.5 parts of plasticizer, 18 parts of ethylene-vinyl acetate copolymers (EVA), 4 parts of low density polyethylene (LDPE)s are mixed, stir, mixing time is 35min, and mixing speed is 80 revs/min;
(2) mixture step (1) being obtained melt extrudes and obtains molten mass on three-layer co-extruded inflation film manufacturing machine, extrusion pressure is 0.2MPa, and the temperature in three-layer co-extruded inflation film manufacturing machine 6th district is respectively: 160 ℃ of district's temperature, 165 ℃ of two district's temperature, 175 ℃ of three district's temperature, 180 ℃ of four district's temperature, 185 ℃ of five district's temperature, 190 ℃ of six district's temperature;
(3) it is cooling that molten mass step (2) being obtained carries out wind, and chilling temperature is 15 ℃, and be 40min cool time, and wind speed is 10 m/s;
(4) will on three-layer co-extruded inflation film manufacturing machine, carry out membrane through the cooled molten mass of step (3) wind and obtain glued membrane, the temperature in three-layer co-extruded blow moulding machine 6th district is respectively: 160 ℃ of district's temperature, 165 ℃ of two district's temperature, 175 ℃ of three district's temperature, 180 ℃ of four district's temperature, 185 ℃ of five district's temperature, 190 ℃ of six district's temperature;
(5) glued membrane step (4) being obtained is cut the glued membrane that obtains required size on cutting machine;
(6) calendering formation: the glued membrane that step (5) is obtained rolls on embossing machine, makes required decorative pattern in the surface pressure of glued membrane.
Embodiment bis-: a kind of preparation method of packaging adhesive film for solar cell, and its component ratio is counted by weight, comprises following processing step:
(1) 10 parts of crosslinking agents, 10 parts of UV absorbers, 8 parts of UV light stabilizing agents, 10 parts of rare-earth light conversion agents, 10 parts of antioxidant BHTs, 10 parts of plasticizer, 25 parts of ethylene-vinyl acetate copolymers (EVA), 9 parts of low density polyethylene (LDPE)s are mixed, stir, mixing time is 25min, and mixing speed is 100 revs/min;
(2) mixture step (1) being obtained melt extrudes and obtains molten mass on three-layer co-extruded inflation film manufacturing machine, extrusion pressure is 0.3MPa, and the temperature in three-layer co-extruded inflation film manufacturing machine 6th district is respectively: 165 ℃ of district's temperature, 170 ℃ of two district's temperature, 180 ℃ of three district's temperature, 185 ℃ of four district's temperature, 190 ℃ of five district's temperature, 195 ℃ of six district's temperature;
(3) it is cooling that molten mass step (2) being obtained carries out wind, and chilling temperature is 21 ℃, and be 30min cool time, and wind speed is 13 m/s;
(4) will on three-layer co-extruded inflation film manufacturing machine, carry out membrane through the cooled molten mass of step (3) wind and obtain glued membrane, the temperature in three-layer co-extruded blow moulding machine 6th district is respectively: 165 ℃ of district's temperature, 170 ℃ of two district's temperature, 180 ℃ of three district's temperature, 185 ℃ of four district's temperature, 190 ℃ of five district's temperature, 195 ℃ of six district's temperature;
(5) glued membrane step (4) being obtained is cut the glued membrane that obtains required size on cutting machine;
(6) calendering formation: the glued membrane that step (5) is obtained rolls on embossing machine, makes required decorative pattern in the surface pressure of glued membrane.
Embodiment tri-: a kind of preparation method of packaging adhesive film for solar cell, and its component ratio is counted by weight, comprises following processing step:
(1) 8 parts of crosslinking agents, 8 parts of UV absorbers, 6 parts of UV light stabilizing agents, 7 parts of rare-earth light conversion agents, 9 parts of antioxidant BHTs, 6 parts of plasticizer, 20 parts of ethylene-vinyl acetate copolymers (EVA), 5 parts of low density polyethylene (LDPE)s are mixed, stir, mixing time is 30min, and mixing speed is 90 revs/min;
(2) mixture step (1) being obtained melt extrudes and obtains molten mass on three-layer co-extruded inflation film manufacturing machine, extrusion pressure is 0.25MPa, and the temperature in three-layer co-extruded inflation film manufacturing machine 6th district is respectively: 163 ℃ of district's temperature, 166 ℃ of two district's temperature, 178 ℃ of three district's temperature, 182 ℃ of four district's temperature, 186 ℃ of five district's temperature, 192 ℃ of six district's temperature;
(3) it is cooling that molten mass step (2) being obtained carries out wind, and chilling temperature is 20 ℃, and be 35min cool time, and wind speed is 12m/s;
(4) will on three-layer co-extruded inflation film manufacturing machine, carry out membrane through the cooled molten mass of step (3) wind and obtain glued membrane, the temperature in three-layer co-extruded blow moulding machine 6th district is respectively: 163 ℃ of district's temperature, 166 ℃ of two district's temperature, 178 ℃ of three district's temperature, 182 ℃ of four district's temperature, 186 ℃ of five district's temperature, 192 ℃ of six district's temperature;
(5) glued membrane step (4) being obtained is cut the glued membrane that obtains required size on cutting machine;
(6) calendering formation: the glued membrane that step (5) is obtained rolls on embossing machine, makes required decorative pattern in the surface pressure of glued membrane.
Claims (1)
1. a preparation method for packaging adhesive film for solar cell, is characterized in that, component ratio is counted by weight, comprises following processing step:
(1) 7 ~ 10 parts of crosslinking agents, 6 ~ 10 parts of UV absorbers, 5 ~ 8 parts of UV light stabilizing agents, 6.5 ~ 10 parts of rare-earth light conversion agents, 7 ~ 10 parts of antioxidant BHTs, 5.5 ~ 10 parts of plasticizer, 18 ~ 25 parts of ethylene-vinyl acetate copolymers (EVA), 4 ~ 9 parts of low density polyethylene (LDPE)s are mixed, stir, mixing time is 25 ~ 35min, and mixing speed is 80 ~ 100 revs/min;
(2) mixture step (1) being obtained melt extrudes and obtains molten mass on three-layer co-extruded inflation film manufacturing machine, extrusion pressure is 0.2 ~ 0.3MPa, and the temperature in three-layer co-extruded inflation film manufacturing machine 6th district is respectively: 160 ~ 165 ℃ of district's temperature, 165 ~ 170 ℃ of two district's temperature, 175 ~ 180 ℃ of three district's temperature, 180 ~ 185 ℃ of four district's temperature, 185 ~ 190 ℃ of five district's temperature, 190 ~ 195 ℃ of six district's temperature;
(3) it is cooling that molten mass step (2) being obtained carries out wind, and chilling temperature is 15 ℃ ~ 21 ℃, and be 30min ~ 40min cool time, and wind speed is 10 ~ 13 m/s;
(4) will on three-layer co-extruded inflation film manufacturing machine, carry out membrane through the cooled molten mass of step (3) wind and obtain glued membrane, the temperature in three-layer co-extruded blow moulding machine 6th district is respectively: 160 ~ 165 ℃ of district's temperature, 165 ~ 170 ℃ of two district's temperature, 175 ~ 180 ℃ of three district's temperature, 180 ~ 185 ℃ of four district's temperature, 185 ~ 190 ℃ of five district's temperature, 190 ~ 195 ℃ of six district's temperature;
(5) glued membrane step (4) being obtained is cut the glued membrane that obtains required size on cutting machine;
Also comprise step (6) calendering formation: the glued membrane that step (5) is obtained rolls on embossing machine, in the surface pressure of glued membrane, make required decorative pattern;
Described crosslinking agent is iso-cyanuric acid triallyl ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127823.1A CN102632611B (en) | 2012-04-27 | 2012-04-27 | Solar cell packaging glue film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127823.1A CN102632611B (en) | 2012-04-27 | 2012-04-27 | Solar cell packaging glue film |
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| Publication Number | Publication Date |
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| CN102632611A CN102632611A (en) | 2012-08-15 |
| CN102632611B true CN102632611B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210127823.1A Active CN102632611B (en) | 2012-04-27 | 2012-04-27 | Solar cell packaging glue film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2713965T3 (en) * | 2013-11-04 | 2019-05-24 | Dow Global Technologies Llc | Multilayer downlink encapsulating films and electronic devices that include them |
| CN103897612B (en) * | 2014-03-28 | 2015-09-09 | 常州斯威克光伏新材料有限公司 | The EVA packaging adhesive film of a kind of sun power anti-PID used for packing material |
| CN104617170A (en) * | 2015-01-21 | 2015-05-13 | 湖南师范大学 | Solar spectrum conversion resin and preparation and application methods thereof |
| CN110713803B (en) * | 2018-07-12 | 2021-10-08 | 杭州福斯特应用材料股份有限公司 | Thermoplastic photovoltaic module packaging adhesive film and preparation method thereof |
| CN114603958A (en) * | 2022-03-09 | 2022-06-10 | 河间市精诚塑业有限公司 | Heat shrinkable film and preparation method thereof |
| CN114805868A (en) * | 2022-04-06 | 2022-07-29 | 浙江中聚材料有限公司 | Polyolefin fiber reinforced layer and application thereof in solar cell adhesive film |
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| JPH05186610A (en) * | 1992-01-16 | 1993-07-27 | Mitsubishi Petrochem Co Ltd | Adhesive sheet for solar cell module |
| JPH1120096A (en) * | 1997-07-07 | 1999-01-26 | Bridgestone Corp | Electronic device sealing film |
| JP2011152720A (en) * | 2010-01-27 | 2011-08-11 | Asahi Kasei E-Materials Corp | Method for manufacturing resin sealing sheet and resin sealing sheet |
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| CN102632611A (en) | 2012-08-15 |
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