CN108437412A - Control the method that EVA flows in lamination process - Google Patents
Control the method that EVA flows in lamination process Download PDFInfo
- Publication number
- CN108437412A CN108437412A CN201810299373.1A CN201810299373A CN108437412A CN 108437412 A CN108437412 A CN 108437412A CN 201810299373 A CN201810299373 A CN 201810299373A CN 108437412 A CN108437412 A CN 108437412A
- Authority
- CN
- China
- Prior art keywords
- eva
- silica gel
- lamination process
- laminate
- gel piece
- 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
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Classifications
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/46—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to the methods that EVA in a kind of control lamination process flows, characterized in that includes the following steps：（1）Heating plate is carried out to be heated to 135 ~ 140 DEG C；（2）Laminating machine inner cavity is carried out to vacuumize 210 ~ 240s, vacuum degree is made to be maintained at 200 ~ 400Pa；（3）Laminate is laminated using silica gel piece, silica gel piece contact layer casting die, lamination pressure 15kPa, the dwell time is 750 ~ 900s.The present invention can reduce cell piece and be blocked area, avoid the reduction of output power, while promoting the aesthetics of appearance.
Description
Technical field
The present invention relates to the methods that EVA in a kind of control lamination process flows, and belong to photovoltaic module manufacturing method technology neck
Domain.
Background technology
EVA is the critical material of potting in photovoltaic module, specific anti-reflective glass, uvioresistant, light aging resisting, bonding
Property it is good, can bear Atmosphere changes, electrical isolation, isolation hostile environment, low steam penetrate, effective performance, in photovoltaic module plus
The links such as work manufacture, storage, transport, installation and operation provide necessary structural support and positioning action.It is general in process of production
Reach production purpose by lamination process, the range request excessively of pressing is very high, and equipment needs work under conditions of high temperature, to heating
Plate also has very high quality requirement.
In the prior art, when photovoltaic module is laminated in laminating machine, EVA can flow to cell piece surface, especially
White EVA, which flow to cell piece surface, can block the light-receiving area of cell piece, lead to following harmful effect：（1）Photovoltaic module is defeated
Go out power reduction；（2）Photovoltaic module cosmetic look reduces.
Invention content
The purpose of the present invention is overcoming the deficiencies in the prior art, EVA in a kind of control lamination process is provided and is flowed
Method, reduce cell piece and be blocked area, avoid the reduction of output power, while promoting the aesthetics of appearance.
According to technical solution provided by the invention, the method for EVA flowings in the control lamination process, characterized in that packet
Include following steps：
（1）Heating plate is carried out to be heated to 135 ~ 140 DEG C；
（2）Laminating machine inner cavity is carried out to vacuumize 210 ~ 240s, vacuum degree is made to be maintained at 200 ~ 400Pa；
（3）Laminate is laminated using silica gel piece, silica gel piece contact layer casting die, lamination pressure is -15kPa, dwell time
For 750 ~ 900s.
Further, the hardness of the silica gel piece is 60 ~ 80HA.
Further, the step（1）When middle heater plate is to 135 ~ 140 DEG C, the flow rate of EVA is in laminate
50-100g/min。
Further, EVA is white EVA in the laminate.
The method that EVA flows in control lamination process of the present invention, can reduce streams of the white EVA in melting process
Dynamic property prevents white EVA from spilling over cell piece front, avoids appearance and power abnormal.
Description of the drawings
Fig. 1 is the schematic diagram of lamination process.
Reference sign：1- heating plates, 2- laminates, 3- silica gel pieces.
Specific implementation mode
With reference to specific attached drawing, the invention will be further described.
Embodiment 1：A kind of method that EVA flows in control lamination process, is mainly used in the laminate of white EVA, wraps
Include following steps：
（1）As shown in Figure 1, heating plate is carried out to be heated to 135 DEG C, 3 ~ 5 DEG C lower than common process temperature, it is possible thereby to reduce layer
The flowing velocity of EVA in casting die, the flow rate of EVA is 50g/min in laminate at this time；
（2）Laminating machine inner cavity is vacuumized, the speed vacuumized needs the air band for carrying out certain control to avoid flowing
Dynamic EVA flows, and 210s is vacuumized in the present embodiment, vacuum degree is made to be maintained at 400Pa；
（3）Hardness is used to be laminated to laminate for the silica gel piece of 60HA, curvature increases contact laminating when silica gel piece works
Part, lamination pressure are -15kPa, dwell time 900s；Since the hardness of silica gel piece is lower than conventional silica gel piece hardness, silica gel
The power that EVA is extruded when piece contact layer casting die can become smaller, and thus the mobility of EVA can reduce.
Embodiment 2：A kind of method that EVA flows in control lamination process, is mainly used in the laminate of white EVA, wraps
Include following steps：
（1）Heating plate is carried out to be heated to 140 DEG C, 3 ~ 5 DEG C lower than common process temperature, it is possible thereby to reduce EVA in laminate
Flowing velocity, at this time in laminate EVA flow rate be 100g/min；
（2）Laminating machine inner cavity is vacuumized, the speed vacuumized needs the air band for carrying out certain control to avoid flowing
Dynamic EVA flows, and 240s is vacuumized in the present embodiment, vacuum degree is made to be maintained at 200Pa；
（3）Hardness is used to be laminated to laminate for the silica gel piece of 80HA, curvature increases contact laminating when silica gel piece works
Part, lamination pressure are -15kPa, dwell time 750s；Since the hardness of silica gel piece is lower than conventional silica gel piece hardness, silica gel
The power that EVA is extruded when piece contact layer casting die can become smaller, and thus the mobility of EVA can reduce.
Embodiment 3：A kind of method that EVA flows in control lamination process, is mainly used in the laminate of white EVA, wraps
Include following steps：
（1）Heating plate is carried out to be heated to 136 DEG C, 3 ~ 5 DEG C lower than common process temperature, it is possible thereby to reduce EVA in laminate
Flowing velocity, at this time in laminate EVA flow rate be 65g/min；
（2）Laminating machine inner cavity is vacuumized, the speed vacuumized needs the air band for carrying out certain control to avoid flowing
Dynamic EVA flows, and 220s is vacuumized in the present embodiment, vacuum degree is made to be maintained at 300Pa；
（3）Hardness is used to be laminated to laminate for the silica gel piece of 70HA, curvature increases contact laminating when silica gel piece works
Part, lamination pressure are -15kPa, dwell time 800s；Since the hardness of silica gel piece is lower than conventional silica gel piece hardness, silica gel
The power that EVA is extruded when piece contact layer casting die can become smaller, and thus the mobility of EVA can reduce.
Comparative example：
For transparent EVA laminate in carrying out lamination process, process conditions are as follows：
（1）Heating plate is carried out to be heated to 145 ~ 152 DEG C, the flow rate of EVA is 150-200g/min at this time；
（2）Laminating machine inner cavity is carried out to vacuumize 250 ~ 330s, vacuum degree is made to be maintained at 250 ~ 330Pa；
（3）Laminate is laminated using silica gel piece, silica gel piece contact layer casting die, lamination pressure is -25kPa, dwell time
For 400 ~ 460s.
According to the comparison of embodiment 1-3 and comparative example it is found that since transparent EVA does not block asking for cell piece light-receiving area
Topic exist, thus in lamination process the control of parameters need to only ensure laminate press, and in comparative example EVA stream
Dynamic rate will be far longer than the flow rate of EVA in embodiment 1-3, thus the laminating technology item of transparent EVA is not suitable for white
The lamination of EVA layer casting die.The present invention is by parameters such as research to white EVA performances and pressure, temperature, times to flowing speed
The influence of degree is studied, and is determined through shorter pumpdown time, lower laminating technology temperature and pressure, to slow down EVA
Flow rate prevents white EVA from flowing to the light-receiving area that cell piece is blocked on cell piece surface.
Claims (4)
1. a kind of method that EVA flows in control lamination process, characterized in that include the following steps：
（1）Heating plate is carried out to be heated to 135 ~ 140 DEG C；
（2）Laminating machine inner cavity is carried out to vacuumize 210 ~ 240s, vacuum degree is made to be maintained at 200 ~ 400Pa；
（3）Laminate is laminated using silica gel piece, silica gel piece contact layer casting die, lamination pressure is -15kPa, dwell time
For 750 ~ 900s.
2. the method that EVA flows in control lamination process as described in claim 1, it is characterized in that：The hardness of the silica gel piece
For 60 ~ 80HA.
3. the method that EVA flows in control lamination process as described in claim 1, it is characterized in that：The step（1）Middle heating
When plate is heated to 135 ~ 140 DEG C, the flow rate of EVA is 50-100g/min in laminate.
4. the method that EVA flows in control lamination process as described in claim 1, it is characterized in that：EVA is in the laminate
White EVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299373.1A CN108437412A (en) | 2018-03-30 | 2018-03-30 | Control the method that EVA flows in lamination process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299373.1A CN108437412A (en) | 2018-03-30 | 2018-03-30 | Control the method that EVA flows in lamination process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108437412A true CN108437412A (en) | 2018-08-24 |
Family
ID=63198258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299373.1A Pending CN108437412A (en) | 2018-03-30 | 2018-03-30 | Control the method that EVA flows in lamination process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108437412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171181A (en) * | 2019-04-23 | 2019-08-27 | 惠州华科技术研究院有限公司 | The laminating method of the mechanical laminater of electronic product module and its anti-residual gas |
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| JP2005120372A (en) * | 2003-10-10 | 2005-05-12 | Eastman Chem Co | Heat crystallization of molten polyester polymer in fluid |
| CN101661975A (en) * | 2009-09-03 | 2010-03-03 | 无锡尚品太阳能电力科技有限公司 | Manufacturing method of lamination of solar battery components |
| CN103000765A (en) * | 2012-12-03 | 2013-03-27 | 赛维Ldk太阳能高科技（南昌）有限公司 | Packaging method of photovoltaic module and photovoltaic module |
| CN105128493A (en) * | 2015-08-26 | 2015-12-09 | 欧贝黎新能源科技股份有限公司 | Air energy photovoltaic component laminator and laminating method thereof |
| CN106972073A (en) * | 2017-03-23 | 2017-07-21 | 贵州润柏吉科技有限公司 | A kind of laminater and its laminating packaging method for solar components |
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2018
- 2018-03-30 CN CN201810299373.1A patent/CN108437412A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120372A (en) * | 2003-10-10 | 2005-05-12 | Eastman Chem Co | Heat crystallization of molten polyester polymer in fluid |
| CN101661975A (en) * | 2009-09-03 | 2010-03-03 | 无锡尚品太阳能电力科技有限公司 | Manufacturing method of lamination of solar battery components |
| CN103000765A (en) * | 2012-12-03 | 2013-03-27 | 赛维Ldk太阳能高科技（南昌）有限公司 | Packaging method of photovoltaic module and photovoltaic module |
| CN105128493A (en) * | 2015-08-26 | 2015-12-09 | 欧贝黎新能源科技股份有限公司 | Air energy photovoltaic component laminator and laminating method thereof |
| CN106972073A (en) * | 2017-03-23 | 2017-07-21 | 贵州润柏吉科技有限公司 | A kind of laminater and its laminating packaging method for solar components |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171181A (en) * | 2019-04-23 | 2019-08-27 | 惠州华科技术研究院有限公司 | The laminating method of the mechanical laminater of electronic product module and its anti-residual gas |
| CN110171181B (en) * | 2019-04-23 | 2023-11-17 | 惠州华科技术研究院有限公司 | Mechanical laminating device for electronic product components and laminating method for preventing residual gas |
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Application publication date: 20180824 |