CN102492369A - Production process of vinylacetate (EVA) glue film for solar battery packaging - Google Patents
Production process of vinylacetate (EVA) glue film for solar battery packaging Download PDFInfo
- Publication number
- CN102492369A CN102492369A CN2011103904803A CN201110390480A CN102492369A CN 102492369 A CN102492369 A CN 102492369A CN 2011103904803 A CN2011103904803 A CN 2011103904803A CN 201110390480 A CN201110390480 A CN 201110390480A CN 102492369 A CN102492369 A CN 102492369A
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- eva
- roller
- glue film
- glued membrane
- twin screw
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a production process of a vinylacetate (EVA) glue film for solar battery packaging. Raw materials are added in a high mixing machine for evenly mixing according to certain ingredient proportions, ingredient materials are sucked in a twin-screw extrusion device hopper through a material sucking machine, mixing plasticizing of the ingredient materials is carried out according to the extrusion process that the heating temperature of a screw is 60-75 DEG C and the heating temperature of a die head is 80-95 DEG C, melt extrusion is carried out, and then the extruded EVA glue film is conducted three-roller curtain coating cooling treatment, and finally the glue film is dragged and rolled. The production process for production of the EVA glue film for the solar battery packaging is high in efficiency, mixed materials can be evenly mixed after 2.5 minutes, and the glue film contractibility rate can stably be smaller than 2.0%.
Description
Technical field
The present invention relates to the production technique of the auxilliary material of a kind of solar cell, be specifically related to a kind of production technique of EVA film adhesive for solar cell package.
Background technology
The production of EVA encapsulating film at present generally uses common stirrer to carry out batch mixing, and general amalgamation defective material needs about 25 minutes, and is not only time-consuming but also have a uneven phenomenon of batch mixing; Secondly present manufacturer's overwhelming majority adopts single screw extrusion machine to produce; Cause the not good phenomenon of the mixing plasticizing effect of EVA easily; Though only a few producer adopts twin screw to produce, and very easily produces the precrosslink phenomenon in process of production, cause producing and interrupt; In addition because the not good shrinking percentage of EVA glued membrane that causes of the temperature of curtain coating production technique, particularly casting roller control is bigger than normal.
Summary of the invention
The production technique that the purpose of this invention is to provide a kind of EVA film adhesive for solar cell package to improve the efficient that curtain coating is produced, is eliminated the precrosslink phenomenon in the twin screw extruder production process, and the glued membrane shrinking percentage is controlled in the small range.
Method of the present invention comprises the steps:
(1) will answer confected materials and join the even EVA formulation material that gets of high-speed mixer and mixing;
(2) this EVA formulation material is inhaled in the hopper of twin screw extruder through Material sucking machine earlier, in twin screw, carries out mixing plasticizing, melt extrudes by certain expressing technique again;
By certain technology the EVA glued membrane of extruding is carried out the curtain coating cooling forming;
(4) glued membrane that is shaped is drawn rolling.
Described expressing technique is that homo(io)thermism is 60-75 ℃ in the twin screw, and die head temperature is constant to be 80-95 ℃;
Described curtain coating cooling forming technology is three roller curtain coatings, and first casting roller is antiseized silica gel roller, and its surface temperature is constant to be 55-65 ℃; Second casting roller is the frosted iron rod; Its surface temperature is constant to be 32-42 ℃, and the 3rd casting roller is the embossing silica gel roller, and its surface temperature is made as 28-35 ℃;
Described high mixer rotating speed is 400 rev/mins, and churning time is 2.5min.
The invention has the advantages that: adopt high-speed mixer to replace common mixing machine, make the state that is in EVA and mixing of auxiliary agent fluidized-bed, not only improved production efficiency but also eliminated the problem of mixing inequality; Adopt twin screw extruder to strengthen mixing plasticizing effect simultaneously to raw material; Glued membrane is extruded the back and is adopted three roller curtain coatings, and the hot shock absorption of first roller has effectively reduced the stress that the glued membrane cooling causes, and the glued membrane shrinking percentage is controlled in 2.0%.
Embodiment
Below in conjunction with embodiment this technology is elaborated.
Embodiment 1:
It is that churning time is 2.5min, the EVA formulation material that must mix in 400 rev/mins the high mixer that multiple confected materials is joined rotating speed; This EVA formulation material is inhaled in the hopper of twin screw extruder through Material sucking machine earlier, is 63 ℃ by the screw rod Heating temperature again, and the die head Heating temperature is that 85 ℃ expressing technique carries out mixing plasticizing, melt extrudes in twin screw extruder; The glued membrane of extruding is carried out the traction of three roller curtain coatings, and first casting roller is antiseized silica gel roller, and its surface temperature is made as 55 ℃; Second casting roller is that its surface temperature of frosted iron rod is made as 32 ℃; The 3rd casting roller is the embossing silica gel roller, and its surface temperature is made as 28 ℃, and glued membrane carries out the heat buffering through first casting roller; Carry out embossing and cooling forming through two or three casting rollers, after the linkage system rolling gets glued membrane F-1.
Embodiment 2:
It is that churning time is 2.5min, the EVA formulation material that must mix in 400 rev/mins the high mixer that multiple confected materials is joined rotating speed; This EVA formulation material is inhaled in the hopper of twin screw extruder through Material sucking machine earlier, is 68 ℃ by the screw rod Heating temperature again, and the die head Heating temperature is that 90 ℃ expressing technique carries out mixing plasticizing, melt extrudes in twin screw extruder; The glued membrane of extruding is carried out the traction of three roller curtain coatings, and first casting roller is antiseized silica gel roller, and its surface temperature is made as 60 ℃; Second casting roller is that its surface temperature of frosted iron rod is made as 37 ℃; The 3rd casting roller is the embossing silica gel roller, and its surface temperature is made as 32 ℃, and glued membrane carries out the heat buffering through first casting roller; Carry out embossing and cooling forming through two or three casting rollers, after the linkage system rolling gets glued membrane F-2.
Embodiment 3:
It is that churning time is 2.5min, the EVA formulation material that must mix in 400 rev/mins the high mixer that multiple confected materials is joined rotating speed; This EVA formulation material is inhaled in the hopper of twin screw extruder through Material sucking machine earlier, is 75 ℃ by the screw rod Heating temperature again, and the die head Heating temperature is that 95 ℃ expressing technique carries out mixing plasticizing, melt extrudes in twin screw extruder; The glued membrane of extruding is carried out the traction of three roller curtain coatings, and first casting roller is antiseized silica gel roller, and its surface temperature is made as 65 ℃; Second casting roller is that its surface temperature of frosted iron rod is made as 42 ℃; The 3rd casting roller is the embossing silica gel roller, and its surface temperature is made as 35 ℃, and glued membrane carries out the heat buffering through first casting roller; Carry out embossing and cooling forming through two or three casting rollers, after the linkage system rolling gets glued membrane F-3.
The performance test scheme:
The shrinking percentage test
Every separated 100m sampling is once taken a sample six times altogether; Be designated as sample a, b, c, d, e, f successively; Sample glued membrane 200mm*200mm is placed in 120 ℃ of baking ovens roars of laughter 3 minutes, tests vertical shrinking percentage, get MV six times, test result is as shown in table 1.
Each sample shrinking percentage test result of table 1
| The glued membrane sample | a | b | c | d | e | f | Average |
| F-1 | 1.8％ | 1.8％ | 1.7％ | 1.8％ | 1.8％ | 1.7％ | 1.7％ |
| F-2 | 1.5％ | 1.6％ | 1.5％ | 1.5％ | 1.4％ | 1.5％ | 1.5％ |
| F-3 | 1.1％ | 1.0％ | 0.8％ | 1.0％ | 0.9％ | 1.0％ | 1.0％ |
This shows, can stablize according to the prepared glued membrane shrinking percentage of technology provided by the invention and be controlled at below 2.0%.
The degree of crosslinking test
Every separated 100m sampling is once taken a sample 4 times altogether; Be designated as sample a, b, c, d successively;
Sample reparation technology condition: get one on glued membrane, with TPT/ glued membrane/glued membrane/glass superimposed after, laminating technology is under 140 ℃, vacuumizes 5min, the pressurization 10min;
Degree of crosslinking testing method: xylene extraction method
Test result is as shown in table 2.
Each sample degree of crosslinking test result of table 2
| The glued membrane sample | a | b | c | d |
| F-1 | 75.12％ | 75.27％ | 75.16％ | 75.21％ |
| F-2 | 75.23％ | 75.18％ | 75.15％ | 75.13％ |
| F-3 | 75.15％ | 75.29％ | 75.11％ | 75.27％ |
This shows that all about 75%, degree of crosslinking is comparatively stable according to the prepared glued membrane degree of crosslinking of technology provided by the invention, mixing of materials is comparatively even.
Claims (2)
1. the production technique of an EVA film adhesive for solar cell package is characterized in that described production technique comprises the steps:
(1) will answer confected materials and join the even EVA formulation material that gets of high-speed mixer and mixing;
(2) this EVA formulation material is inhaled in the hopper of twin screw extruder through Material sucking machine earlier, in twin screw, carries out mixing plasticizing, melt extrudes by certain expressing technique again;
(3) by certain technology the EVA glued membrane of extruding is carried out the curtain coating cooling forming;
(4) glued membrane that is shaped is drawn rolling;
Described expressing technique is that homo(io)thermism is 60-75 ℃ in the twin screw, and die head temperature is constant to be 80-95 ℃; Described curtain coating cooling forming technology is three roller curtain coatings, and first casting roller is antiseized silica gel roller, and its surface temperature is constant to be 55-65 ℃; Second casting roller is the frosted iron rod; Its surface temperature is constant to be 32-42 ℃, and the 3rd casting roller is the embossing silica gel roller, and its surface temperature is made as 28-35 ℃.
2. high mixer rotating speed according to claim 1 is 400 rev/mins, and churning time is 2.5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103904803A CN102492369A (en) | 2011-11-30 | 2011-11-30 | Production process of vinylacetate (EVA) glue film for solar battery packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103904803A CN102492369A (en) | 2011-11-30 | 2011-11-30 | Production process of vinylacetate (EVA) glue film for solar battery packaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102492369A true CN102492369A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103904803A Pending CN102492369A (en) | 2011-11-30 | 2011-11-30 | Production process of vinylacetate (EVA) glue film for solar battery packaging |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013364A (en) * | 2013-01-08 | 2013-04-03 | 李民 | Multilayer coextruded surface-layer pre-crosslinked adhesive film |
| CN105505241A (en) * | 2015-12-24 | 2016-04-20 | 南通和和塑胶新材料有限公司 | Preparation method of substrate-free EVA (ethylene-vinyl acetate) hot melt adhesive film |
| CN106543922A (en) * | 2016-11-02 | 2017-03-29 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive and its membrane-based article of masking |
| CN106753089A (en) * | 2016-12-13 | 2017-05-31 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive of masking and its membrane-based article |
| CN107972296A (en) * | 2017-11-16 | 2018-05-01 | 明冠新材料股份有限公司 | A kind of connecting line production equipment of glued membrane backboard composite material |
Citations (3)
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| DE4102806A1 (en) * | 1991-01-31 | 1992-08-06 | Leuna Werke Ag | Highly-filled fire-resistant cpds. - by melt-compounding mixt. of polyolefin, fire-retardant, additives, stabilisers and special processing cpd. in twin-screw extruder |
| CN102034892A (en) * | 2009-09-28 | 2011-04-27 | 东莞市永固绝缘材料有限公司 | Production technology of encapsulated ethane-vinyl acetate copolymer (EVA) adhesive film of solar battery |
| CN102153958A (en) * | 2011-01-11 | 2011-08-17 | 广州市宝力达电气材料有限公司 | EVA (ethylene-vinyl acetate) adhesive film for heat-resistant solar battery, and preparation method and application thereof |
-
2011
- 2011-11-30 CN CN2011103904803A patent/CN102492369A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4102806A1 (en) * | 1991-01-31 | 1992-08-06 | Leuna Werke Ag | Highly-filled fire-resistant cpds. - by melt-compounding mixt. of polyolefin, fire-retardant, additives, stabilisers and special processing cpd. in twin-screw extruder |
| CN102034892A (en) * | 2009-09-28 | 2011-04-27 | 东莞市永固绝缘材料有限公司 | Production technology of encapsulated ethane-vinyl acetate copolymer (EVA) adhesive film of solar battery |
| CN102153958A (en) * | 2011-01-11 | 2011-08-17 | 广州市宝力达电气材料有限公司 | EVA (ethylene-vinyl acetate) adhesive film for heat-resistant solar battery, and preparation method and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013364A (en) * | 2013-01-08 | 2013-04-03 | 李民 | Multilayer coextruded surface-layer pre-crosslinked adhesive film |
| CN103013364B (en) * | 2013-01-08 | 2015-01-07 | 上海海优威新材料股份有限公司 | Multilayer coextruded surface-layer pre-crosslinked adhesive film |
| CN105505241A (en) * | 2015-12-24 | 2016-04-20 | 南通和和塑胶新材料有限公司 | Preparation method of substrate-free EVA (ethylene-vinyl acetate) hot melt adhesive film |
| CN105505241B (en) * | 2015-12-24 | 2018-10-19 | 江苏和和新材料股份有限公司 | A kind of preparation methods of the EVA without base material hot melt adhesive film |
| CN106543922A (en) * | 2016-11-02 | 2017-03-29 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive and its membrane-based article of masking |
| CN106753089A (en) * | 2016-12-13 | 2017-05-31 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive of masking and its membrane-based article |
| CN107972296A (en) * | 2017-11-16 | 2018-05-01 | 明冠新材料股份有限公司 | A kind of connecting line production equipment of glued membrane backboard composite material |
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Application publication date: 20120613 |