TW201445763A - Solar cell module production method - Google Patents
Solar cell module production method Download PDFInfo
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- TW201445763A TW201445763A TW103110965A TW103110965A TW201445763A TW 201445763 A TW201445763 A TW 201445763A TW 103110965 A TW103110965 A TW 103110965A TW 103110965 A TW103110965 A TW 103110965A TW 201445763 A TW201445763 A TW 201445763A
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- resin film
- film
- solar cell
- cell module
- easy
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- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- H01L31/049—Protective back sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/14—Semiconductor wafers
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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
- 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
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
本發明係關於一種製造太陽能電池模組之方法。 The present invention relates to a method of fabricating a solar cell module.
近年來，由於對環境問題之意識高漲，太陽能係作為無盡的寶藏且無公害之新能源而受到矚目，太陽能發電係作為潔淨且對環境優越的發電系統而正急速進行開發。 In recent years, the awareness of environmental issues has increased, and the solar energy system has attracted attention as an endless treasure and a new energy-free source. The solar power generation system is rapidly developing as a clean and environmentally-friendly power generation system.
一般而言，太陽能電池模組係藉由使用結晶矽太陽能電池、多晶矽太陽能電池、或非晶矽太陽能電池等之太陽能電池元件，依序積層表面保護片或玻璃、乙烯/乙酸乙烯酯共聚物樹脂等之封裝材片、太陽能電子元件、封裝材片、及背面保護片，於抽真空後加熱壓黏使其一體化之方法而予以製造。作為構成太陽能電池模組之背面保護片，一般使用重量輕且電特性與強度優異的塑膠基材。為了要求太陽能電池模組歷經20年以上之長期間而維持性能，背面保護片必須具優越的強度、耐候性、耐熱性、耐水性、耐光性、耐藥品性、防濕性、設計性等，該等特性不會隨時間經過而大幅地劣化。 In general, a solar cell module sequentially laminates a surface protective sheet or a glass, ethylene/vinyl acetate copolymer resin by using a solar cell element such as a crystalline germanium solar cell, a polycrystalline germanium solar cell, or an amorphous germanium solar cell. The package material sheet, the solar electronic component, the package material sheet, and the back surface protection sheet are manufactured by vacuum pressing, pressure bonding, and integration. As the back surface protective sheet constituting the solar cell module, a plastic substrate which is light in weight and excellent in electrical characteristics and strength is generally used. In order to maintain the performance of the solar cell module for more than 20 years, the back protective sheet must have superior strength, weather resistance, heat resistance, water resistance, light resistance, chemical resistance, moisture resistance, design, and the like. These characteristics do not degrade significantly over time.
使用於太陽能電池模組之背面保護片係為了符合上述各式各樣的要求特性，利用接著劑、黏著劑等 而預先積層複數層功能性膜的薄片(專利文獻1)。還有，於積層之前或之後，必要時利用塗布等而積層功能層，於加工後，一般熟成數天，使成本削減或製程之縮短成為課題。亦即，按照上述步驟之數目，有損失將會增加、最終製品之良率將會降低的問題。 The back protective sheet used in the solar cell module is made of an adhesive, an adhesive, etc. in order to meet the various required characteristics described above. On the other hand, a sheet of a plurality of functional films is laminated in advance (Patent Document 1). Further, before or after the lamination, if necessary, the functional layer is laminated by coating or the like, and after the processing, it is usually cooked for several days, and the cost reduction or the shortening of the process is a problem. That is, according to the number of the above steps, there is a problem that the loss will increase and the yield of the final product will decrease.
還有，也有人指出如下之問題：由於所積層的各個薄膜之線膨脹係數不同，於背面保護片中發生彎曲、積層太陽能電池模組之各個構件，於製作太陽能電池模組之步驟中，由於因彎曲所造成的步驟通過性低，不良品經常發生。 Further, some people have pointed out the following problems: since the linear expansion coefficients of the respective films of the laminated layers are different, bending and stacking the respective components of the solar cell module in the back protective sheet, in the step of fabricating the solar cell module, The passability caused by the bending is low, and defective products often occur.
[專利文獻1]國際公開第2012/029733號公報 [Patent Document 1] International Publication No. 2012/029733
本發明之目的係提供一種太陽能電池模組之製造方法，其減低太陽能電池模組用背面保護片的製造步驟之損失，同時也在太陽能電池模組之製造方法中，藉由根本解決背面保護片彎曲之問題而能夠使產率提高。 The object of the present invention is to provide a method for manufacturing a solar cell module, which reduces the loss of the manufacturing steps of the back protective sheet for a solar cell module, and also solves the back protective sheet by fundamentally in the manufacturing method of the solar cell module. The problem of bending can increase the yield.
本發明人等發現藉由一種太陽能電池模組之製造方法而能解決上述問題，該方法係藉由加熱與壓黏處理表面保護片、封裝材片1、太陽能電池單元、封裝材 片2、與2片以上之背面保護片構件膜而予以一體成型的太陽能電池模組之製造方法，其特徵在於根據該成型時之加熱溫度與壓黏條件所積層的該封裝材片2、與對向於其之背面保護片構件膜間之緊貼強度為40N/cm以上，且該2片以上之背面保護片構件膜間之緊貼強度中任一者皆為1N/cm以上。 The present inventors have found that the above problem can be solved by a method for manufacturing a solar cell module by heating and pressing a surface protective sheet, a package sheet 1, a solar cell unit, and a packaging material. A method for producing a solar cell module in which a sheet 2 and two or more back surface protective sheet member films are integrally molded, characterized in that the package sheet 2 and the layer which are laminated according to the heating temperature and the pressure-bonding condition at the time of molding The adhesion strength between the films of the back surface protective sheet members is 40 N/cm or more, and the adhesion strength between the two or more back surface protective sheet member films is 1 N/cm or more.
藉本發明所提供的太陽能電池模組之製造方法能一體成型複數之背面保護片構件膜，藉由解決背面保護片彎曲之問題而能以更高的良率製造太陽能電池模組，亦能減低背面保護片構件膜之損失。 The manufacturing method of the solar cell module provided by the invention can integrally form a plurality of back protective sheet member films, and can solve the problem of bending of the back protective sheet to manufacture the solar cell module at a higher yield, and can also reduce Loss of the back protective sheet member film.
1‧‧‧表面保護片 1‧‧‧Surface protection film
2‧‧‧封裝材片1 2‧‧‧Package sheet 1
3‧‧‧太陽能電池單元 3‧‧‧Solar battery unit
4、11、21、31、41‧‧‧封裝材片2 4, 11, 21, 31, 41‧‧‧Package sheet 2
5、15、27、36、45‧‧‧背面保護片構件膜 5, 15, 27, 36, 45‧‧‧ back protective sheet member film
6、12、22、32、42‧‧‧熱接著性樹脂膜 6, 12, 22, 32, 42‧‧‧ Thermal adhesive resin film
7、14、23、34、43‧‧‧樹脂膜 7, 14, 23, 34, 43‧‧‧ resin film
8、13、24、26、33、35‧‧‧易接著層 8, 13, 24, 26, 33, 35‧‧ ‧ easy layer
9‧‧‧太陽能電池面板 9‧‧‧Solar battery panel
25‧‧‧另一片之樹脂膜 25‧‧‧Another piece of resin film
44‧‧‧易接著樹脂膜 44‧‧‧ Easy to follow resin film
第1圖係顯示本發明之太陽能電池模組之一製造方法之示意圖。 Fig. 1 is a schematic view showing a method of manufacturing a solar cell module of the present invention.
第2圖係在本發明之太陽能電池模組用背面保護片構件膜之例子。 Fig. 2 is an example of a back protective sheet member film for a solar cell module of the present invention.
第3圖係在本發明之太陽能電池模組用背面保護片構件膜之例子。 Fig. 3 is an example of a back protective sheet member film for a solar cell module of the present invention.
第4圖係在本發明之太陽能電池模組用背面保護片構件膜之例子。 Fig. 4 is an example of a back protective sheet member film for a solar cell module of the present invention.
第5圖係在本發明之太陽能電池模組用背面保護片構件膜之例子。 Fig. 5 is an example of a back protective sheet member film for a solar cell module of the present invention.
本發明之太陽能電池模組之製造方法係依照表面保護片、封裝材片1、太陽能電池單元、封裝材片2、與2片以上之背面保護片構件膜之順序，藉由加熱與壓黏處理而予以一體成型者，一般而言，因該表面保護片為表面保護玻璃，亦可為確保能替代玻璃之透明性、強度、耐候性、耐熱性、阻氣性能等之樹脂片。 The manufacturing method of the solar cell module of the present invention is in accordance with the order of the surface protection sheet, the package material sheet 1, the solar battery unit, the package material sheet 2, and the two or more back surface protection sheet member films, by heating and pressure bonding treatment. In general, since the surface protection sheet is a surface protection glass, it is also possible to ensure a resin sheet which can replace the transparency, strength, weather resistance, heat resistance, gas barrier property and the like of the glass.
在本發明之封裝材片(併稱封裝材片1與封裝材片2)係以被覆太陽能電池單元之凹凸、避免溫度變化、濕度、衝擊等而保護太陽能電池單元之目的下使用。 The package sheet (also referred to as the package sheet 1 and the package sheet 2) of the present invention is used for the purpose of protecting the solar battery cells by covering the irregularities of the solar battery cells, avoiding temperature changes, humidity, impact, and the like.
作為太陽能電池模組之封裝材片，能使用習知之熱接著性膜，例如，可舉出乙烯/乙酸乙烯酯共聚物樹脂(以下，也簡稱為EVA。)、乙烯/丙烯酸甲酯共聚合樹脂、乙烯/丙烯酸乙酯共聚合樹脂、聚胺基甲酸酯樹脂、聚乙烯丁縮醛、乙烯/乙酸乙烯酯部分皂化物、矽氧烷樹脂、聚酯樹脂等。從耐光性、穿透性、耐濕性、經濟性之觀點，太陽能電池模組之封裝構件層特佳使用EVA；乙酸乙烯酯含量特佳為15至40重量%。若乙酸乙烯酯含量為15至40重量%時，透明性不會降低，樹脂不會發黏，加工性或操作性佳。 As the package sheet of the solar cell module, a conventional thermal adhesive film can be used, and examples thereof include an ethylene/vinyl acetate copolymer resin (hereinafter, also abbreviated as EVA), and an ethylene/methyl acrylate copolymer resin. An ethylene/ethyl acrylate copolymer resin, a polyurethane resin, a polyvinyl butyral, an ethylene/vinyl acetate partial saponified product, a decane resin, a polyester resin, or the like. From the viewpoints of light resistance, penetrability, moisture resistance, and economy, the packaging member layer of the solar cell module is particularly preferably EVA; the vinyl acetate content is particularly preferably 15 to 40% by weight. When the vinyl acetate content is 15 to 40% by weight, the transparency is not lowered, the resin is not sticky, and workability or handleability is good.
於太陽能電池模組之封裝材片中，必要時亦可使用有機過氧化物等之交聯劑、紫外線吸收劑、抗氧化劑等添加劑。又，為了減輕加熱熔融時之皺紋的發生、使加工性提高，亦可使用已預先實施壓紋加工之片。 In the package sheet of the solar cell module, an additive such as an organic peroxide or the like, a UV absorber, or an antioxidant may be used as necessary. Moreover, in order to reduce the occurrence of wrinkles during heating and melting, and to improve workability, a sheet which has been subjected to embossing in advance may be used.
在本發明之背面保護片構件膜係包含2片以上，積層此等而綜合性地發揮強度、耐候性、耐熱性、 耐水性、耐光性、耐藥品性、防濕性、設計性等，根據背面保護片所要求的功能而能進行任意之組合。其中，較佳在封裝材片2側設置熱接著性樹脂膜。 In the back surface protective sheet member film of the present invention, two or more sheets are laminated, and the layers are laminated to comprehensively exhibit strength, weather resistance, heat resistance, and Water resistance, light resistance, chemical resistance, moisture resistance, design properties, and the like can be arbitrarily combined according to the functions required for the back surface protective sheet. Among them, it is preferable to provide a thermal adhesive resin film on the side of the package sheet 2.
在本發明之熱接著性樹脂膜係具有與上述封裝材片之熱接著性的薄膜，作為熱接著性樹脂薄膜之樹脂而較佳被使用者為聚烯烴。所謂聚烯烴係單獨或共聚合乙烯、丙烯、1-丁烯、1-戊烯等之烯烴單體者，基於耐熱性之觀點，較佳為聚乙烯系樹脂與聚丙烯系樹脂，與聚乙烯與作一比較，以聚丙烯作為主體之樹脂(聚丙烯系樹脂)者具更優越的耐熱性，更難遭受成型太陽能電池模組時的高溫與高壓下之變形，於該加工溫度高之情形下，更佳被使用。 The thermal adhesive resin film of the present invention has a thermal adhesive property to the above-mentioned encapsulating material sheet, and is preferably a polyolefin as a resin of the thermal adhesive resin film. The polyolefin-based olefin monomer such as ethylene, propylene, 1-butene or 1-pentene is preferably a polyethylene resin, a polypropylene resin, and a polyethylene, based on heat resistance. Compared with the comparison, the resin with polypropylene as the main component (polypropylene resin) has superior heat resistance, and it is more difficult to suffer deformation under high temperature and high pressure when forming a solar cell module, and the processing temperature is high. Next, better to be used.
以耐熱性為首，從平滑性或薄膜操作性、耐卷縮性、與接著性樹脂層的熱接著性之觀點來看，聚丙烯系樹脂之熔點較佳為140℃至170℃之範圍。藉由使熔點成為140℃以上，具優越的耐熱性，於作為太陽能電池模組用背面保護片構件膜而使其與封裝材片熱熔融時，由於能減低厚度或抑制耐絕緣性降低之不當情形，故較佳。藉由使熔點成為170℃以下，能確保與封裝材片之優越的緊貼力，故較佳。 The melting point of the polypropylene resin is preferably in the range of 140 ° C to 170 ° C from the viewpoints of smoothness, film handleability, shrink resistance, and thermal adhesion to the adhesive resin layer. When the melting point is 140° C. or higher and the heat resistance is excellent, when it is thermally melted as a back surface protective sheet member film for a solar cell module, the thickness can be reduced or the insulation resistance can be reduced. The situation is better. By setting the melting point to 170 ° C or lower, it is possible to ensure a superior adhesion to the package sheet, which is preferable.
在本發明之熱接著性樹脂膜也能作成耐綸膜。作為耐綸樹脂，期望為耐綸-6、耐綸-66、耐綸-11、耐綸-12等之具優越的機械強度或尺寸安定性、耐熱性者。 A heat resistant resin film of the present invention can also be used as a nylon film. As the nylon resin, it is desired to have excellent mechanical strength, dimensional stability, and heat resistance such as nylon-6, nylon-66, nylon-11, and nylon-12.
在本發明之熱接著性樹脂膜也能作成氟系樹脂膜。作為氟系樹脂，期望使用例如以聚氟乙烯(PVF) 、乙烯‧氯三氟乙烯共聚物(ECTFE)、或乙烯/四氟乙烯共聚物(ETFE)作為主要成分之樹脂。 The thermal adhesive resin film of the present invention can also be used as a fluorine-based resin film. As the fluorine-based resin, it is desirable to use, for example, polyvinyl fluoride (PVF). A resin containing ethylene chlorotrifluoroethylene copolymer (ECTFE) or ethylene/tetrafluoroethylene copolymer (ETFE) as a main component.
在本發明之熱接著性樹脂膜亦可作成乙酸乙烯酯含有率為2至20重量%之乙烯/乙酸乙烯酯共聚合樹脂膜。乙酸乙烯酯含有率為2重量%以上，能使其與封裝材片之緊貼性成為良好；為20重量%以下，不會黏連而能作成操作性良好者。 The thermal adhesive resin film of the present invention can also be used as an ethylene/vinyl acetate copolymer resin film having a vinyl acetate content of 2 to 20% by weight. The vinyl acetate content is 2% by weight or more, and the adhesion to the package sheet can be made good. When the content is 20% by weight or less, the adhesion can be improved without good adhesion.
再者，在本發明之熱接著性樹脂膜中，依照顧客要求，較佳使用添加有白色微粒之樹脂或添加有黑色微粒之樹脂。作為白色微粒係碳酸鈣、二氧化矽、氧化鋁、氫氧化鎂、氧化鋅、滑石、氧化鈦、硫酸鋇等，藉由添加白色微粒，而根據反射率提高之效果而能期待發電效率之提高。又，作為黑色微粒，能夠添加碳黑或碳奈米管、苯胺黑、黑色氧化鐵等。藉由添加此等之黑色微粒，設計性將會提高。 Further, in the thermal adhesive resin film of the present invention, a resin to which white particles are added or a resin to which black particles are added is preferably used in accordance with customer requirements. As white fine particles of calcium carbonate, cerium oxide, aluminum oxide, magnesium hydroxide, zinc oxide, talc, titanium oxide, barium sulfate, etc., by adding white fine particles, it is expected that the power generation efficiency is improved by the effect of improving the reflectance. . Further, as the black fine particles, carbon black or carbon nanotubes, nigrosine, black iron oxide, or the like can be added. By adding these black particles, the design will increase.
在本發明之背面保護片構件膜係包含2片以上，在1片作成上述熱接著性樹脂膜之情形下，進一步設置1片以上之樹脂膜而成。通常較佳為2片之熱接著性樹脂膜與樹脂膜。 In the case of the back surface protective sheet member film of the present invention, two or more sheets are formed, and in the case where the above-mentioned thermal adhesive resin film is formed, one or more resin films are further provided. Usually, two sheets of the thermal adhesive resin film and the resin film are preferable.
因此，樹脂膜較佳為耐水解性聚酯膜或氟系樹脂膜。所謂本發明之耐水解性聚酯膜係在140℃高壓水蒸氣下保管10小時後之拉伸伸度為膜之縱向、橫向皆保持60%以上之聚酯膜。具有耐水解性之聚酯膜係具有優越的耐熱性、防濕性、耐水解之性能，能確實進行太陽能電池模組之保護。從強度、耐熱性、平面性之觀點， 耐水解性聚酯膜較佳為藉常用方法而予以雙軸拉伸者。 Therefore, the resin film is preferably a hydrolysis-resistant polyester film or a fluorine-based resin film. The hydrolysis-resistant polyester film of the present invention has a tensile elongation of 40% or more in the longitudinal direction and the transverse direction of the film after being stored under high-pressure steam at 140 ° C for 10 hours. The polyester film having hydrolysis resistance has excellent heat resistance, moisture resistance, and hydrolysis resistance, and can be surely protected by a solar cell module. From the viewpoints of strength, heat resistance, and flatness, The hydrolysis-resistant polyester film is preferably biaxially stretched by a usual method.
耐水解性聚酯膜係將對苯二甲酸使用於二羧酸成分、將乙二醇使用於二醇成分之固有黏度[η]為0.70至1.20，更佳為0.75至1.00之聚對苯二甲酸乙二酯的雙軸拉伸膜；在耐熱性、耐水解性、耐候性、機械強度等方面上，特佳將2,6-萘二甲酸使用於二羧酸成分、將乙二醇使用於二醇成分之聚-2,6-萘二甲酸乙二酯的雙軸拉伸膜。於此，固有黏度[η]係將鄰氯苯酚作為溶劑而溶解聚酯膜，在25℃之溫度下所測出的值，該黏度係與聚酯之聚合度成比例。於該固有黏度為0.70以上之情形下，使賦予耐水解性、耐熱性變得容易，由於使背面保護片，進而使太陽能電池模組之耐水解性能提高，故較佳。又，於該數值為1.20以下之情形下，由於使熔融黏度變低且使熔融擠出成型變得容易，薄膜之製膜性將會提高，故較佳。 The hydrolysis resistant polyester film is a polyethylene terephthalate having a terephthalic acid used in a dicarboxylic acid component and an ethylene glycol used in a diol component having an intrinsic viscosity [η] of 0.70 to 1.20, more preferably 0.75 to 1.00. Biaxially stretched film of diester; in terms of heat resistance, hydrolysis resistance, weather resistance, mechanical strength, etc., it is particularly preferable to use 2,6-naphthalene dicarboxylic acid for the dicarboxylic acid component and ethylene glycol for the second A biaxially stretched film of polyethylene-2,6-naphthalenedicarboxylate having an alcohol component. Here, the intrinsic viscosity [η] is a value measured by dissolving o-chlorophenol as a solvent in a polyester film at a temperature of 25 ° C, and the viscosity is proportional to the degree of polymerization of the polyester. When the intrinsic viscosity is 0.70 or more, hydrolysis resistance and heat resistance are easily facilitated, and the back surface protective sheet is further improved in hydrolysis resistance of the solar cell module. In addition, when the value is 1.20 or less, since the melt viscosity is lowered and melt extrusion molding is facilitated, the film formability of the film is improved, which is preferable.
又，於該聚酯之中，以不損害本發明效果之量，必要時亦可摻合適宜之添加劑，例如耐熱安定劑、耐氧化安定劑、紫外線吸收劑、耐候安定劑、有機易滑劑、有機系微粒、填充劑、抗靜電劑、成核劑、染料、分散劑、耦合劑等。 Further, among the polyesters, suitable additives such as a heat stabilizer, an oxidation stabilizer, an ultraviolet absorber, a weathering stabilizer, and an organic slip agent may be blended as necessary without impairing the effects of the present invention. , organic fine particles, fillers, antistatic agents, nucleating agents, dyes, dispersants, coupling agents, and the like.
耐水解性聚酯膜亦可為在與封裝材片側相反側之表層中添加白色微粒、使耐水解性聚酯膜之耐紫外線性提高的構造，亦即為共擠出耐水解性聚對苯二甲酸乙二酯與白色耐水解性聚對苯二甲酸乙二酯所製膜的構造。於該情形下，相對於白色耐水解性聚對苯二甲酸乙 二酯之耐水解性聚對苯二甲酸乙二酯，期望耐水解性聚對苯二甲酸乙二酯層與白色耐水解性聚對苯二甲酸乙二酯層之厚度比為2至8倍之範圍。藉由使用該共擠出聚酯膜而能獲得習知聚酯膜所得不到的高反射率與耐紫外線性、耐濕熱性。 The hydrolysis-resistant polyester film may have a structure in which white particles are added to the surface layer on the side opposite to the side of the package sheet, and the ultraviolet resistance of the hydrolysis-resistant polyester film is improved, that is, co-extruded hydrolysis-resistant polyethylene terephthalate and The structure of a film formed of white hydrolysis-resistant polyethylene terephthalate. In this case, relative to white hydrolysis-resistant polyethylene terephthalate The hydrolysis-resistant polyethylene terephthalate of the diester is desirably in a range of 2 to 8 times the thickness ratio of the hydrolysis-resistant polyethylene terephthalate layer to the white hydrolysis-resistant polyethylene terephthalate layer. By using the coextruded polyester film, high reflectance, ultraviolet resistance, and moist heat resistance which are not obtained by a conventional polyester film can be obtained.
又，期望在本發明之背面保護片構件膜之樹脂膜的太陽能電池模組最背面所設置的面上積層有紫外線吸收層。 Further, it is desirable that an ultraviolet absorbing layer is laminated on the surface provided on the rearmost surface of the solar cell module of the resin film of the back surface protective sheet member film of the present invention.
紫外線吸收層係用以防止背面保護片之紫外線劣化所設置。本發明之太陽能電池模組用背面保護片係如其名所示，積層於太陽能電池模組之背面側，還有紫外線吸收層係設置於太陽能電池模組之背面側，即使於長期間之屋外曝露下也擔負防止從地面或屋頂之反射所造成的樹脂之色調變化、強度劣化等之紫外線劣化的功能。所謂本發明之紫外線吸收層係指具有使得在波長380nm之光線穿透率成為10%以下的功能之層，在該波長之光線穿透率進一步較佳為7%以下，最佳為5%以下。其特性係根據在紫外線吸收層中之紫外線吸收劑的濃度與紫外線吸收層的厚度所決定，並按照所要求的性能而進行設計。 The ultraviolet absorbing layer is provided to prevent ultraviolet deterioration of the back surface protective sheet. The back protective sheet for a solar cell module of the present invention is laminated on the back side of the solar cell module, and the ultraviolet absorbing layer is disposed on the back side of the solar cell module, even when exposed to a long period of time. It also has a function of preventing ultraviolet light deterioration such as color tone change and strength deterioration of the resin caused by reflection from the ground or the roof. The ultraviolet absorbing layer of the present invention is a layer having a function of making the light transmittance at a wavelength of 380 nm 10% or less, and the light transmittance at this wavelength is more preferably 7% or less, and most preferably 5% or less. . The characteristics are determined according to the concentration of the ultraviolet absorber in the ultraviolet absorbing layer and the thickness of the ultraviolet absorbing layer, and are designed in accordance with the required properties.
該等紫外線吸收層較佳藉由塗布而形成於背面保護片構件膜之樹脂膜上。於紫外線吸收層中，因有機系紫外線吸收劑、無機系紫外線吸收劑、及該等之併用所進行的添加，任一種皆未有特殊的限定而能較佳使用，期望具優越的耐濕熱性、能均勻分散。有機系紫外 線吸收劑作為如此紫外線吸收劑之情形，有水楊酸系、二苯甲酮系、苯并***系、丙烯酸氰酯系等之紫外線吸收劑，較佳為低萃取性、低揮發性且對聚合物之相溶性亦優良的受阻胺系等之紫外線吸收劑。 These ultraviolet absorbing layers are preferably formed on the resin film of the back surface protective sheet member film by coating. In the ultraviolet absorbing layer, any of organic ultraviolet ray absorbing agents, inorganic ultraviolet absorbing agents, and the like, which are used in combination, can be preferably used without any particular limitation, and it is desired to have excellent heat and humidity resistance. Can be evenly dispersed. Organic UV As the ultraviolet absorber, the line absorber has a UV absorber such as salicylic acid, benzophenone, benzotriazole or cyanoacrylate, and is preferably low in extractability and low in volatility. A UV absorber such as a hindered amine which is excellent in compatibility with a polymer.
該等紫外線吸收劑，具體而言，可舉出水楊酸系之水楊酸對三級丁基苯酯、水楊酸對辛基苯酯；二苯甲酮系之2,4-二羥基二苯甲酮、2-羥基-4-甲氧基二苯甲酮、2-羥基-4-甲氧基-5-磺酸基二苯甲酮、2,2’,4,4’-四羥基二苯甲酮、雙(2-甲氧基-4-羥基-5-苄基苯基)甲烷；苯并***系之2-(2’-羥基-5’-甲基苯基)苯并***、2,2’-亞甲基雙[4-(1,1,3,3-四甲基丁基)-6-(2H-苯并***-2-基)苯酚)]；丙烯酸氰酯系之丙烯酸-乙基-2-氰基3,3’-二苯酯，其他之2-(4,6-二苯基-1,3,5-三-2-基)-5-己氧基苯酚；受阻胺系之雙(2,2,6,6-四甲基-4-哌啶基)癸二酸酯、琥珀酸二甲基-1-(2-羥乙基)-4-羥基-2,2,6,6-四甲基哌啶聚縮合物；鎳雙(辛基苯基)硫醚、及2,4-二(三級丁基苯基)-3’,5’-二(三級丁基)-4’-羥基苯甲酸酯等。 Specific examples of such ultraviolet absorbers include salicylic acid-based salicylic acid to tributylbenzene ester, salicylic acid p-octylphenyl ester; and benzophenone-based 2,4-dihydroxy group. Benzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfonylbenzophenone, 2,2',4,4'-tetra Hydroxybenzophenone, bis(2-methoxy-4-hydroxy-5-benzylphenyl)methane; benzotriazole-based 2-(2'-hydroxy-5'-methylphenyl)benzene And triazole, 2,2'-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol)]; Acrylic acid cyanoacrylate-ethyl-2-cyano 3,3'-diphenyl ester, other 2-(4,6-diphenyl-1,3,5-three -2-yl)-5-hexyloxyphenol; hindered amine bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, dimethyl-1-succinate (2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate; nickel bis(octylphenyl) sulfide, and 2,4-di (tertiary Phenylphenyl)-3',5'-di(tributyl)-4'-hydroxybenzoate or the like.
又，作為無機系之紫外線吸收劑，可舉出氧化鈦、氧化鋅、氧化鈰等之金屬氧化物；或碳、富勒烯、碳纖維、碳奈米管等之碳系成分等。 In addition, examples of the inorganic ultraviolet ray absorbing agent include metal oxides such as titanium oxide, zinc oxide, and cerium oxide; and carbon-based components such as carbon, fullerene, carbon fibers, and carbon nanotubes.
針對將上述紫外線吸收劑作為紫外線吸收層而固定於背面保護片構件膜之樹脂膜上，較佳將該等紫外線吸收劑添加於黏著劑樹脂中而與黏著劑樹脂同時塗布，或是若為有機系之紫外線吸收劑的話，塗布使具有紫外線吸收劑能力之單體與黏著劑樹脂共聚合者等而形 成紫外線吸收層。為此之黏著劑樹脂能選自聚酯系、丙烯酸系、胺基甲酸酯系等之習知樹脂系。考量長期間屋外使用下之情形，期望使用無機系之紫外線吸收劑，將無機系紫外線吸收劑作為塗布層而固定的黏著劑樹脂，用以防止其因紫外線所造成的劣化，較佳併用有機系紫外線吸收劑而添加於黏著劑樹脂中，或使用使具有紫外線吸收劑能力之單體共聚合的黏著劑樹脂。 The ultraviolet absorber is preferably applied to the resin film of the back surface protective sheet member film as the ultraviolet absorbing layer, and the ultraviolet absorber is preferably added to the adhesive resin to be applied together with the adhesive resin, or if it is organic In the case of a UV absorber, it is formed by coating a monomer having an ultraviolet absorber capable of copolymerizing with an adhesive resin. Become an ultraviolet absorbing layer. The adhesive resin for this purpose can be selected from conventional resin systems such as polyester, acrylic, and urethane. When considering the use of the outside of the house for a long period of time, it is desirable to use an inorganic UV absorber and an inorganic UV absorber as a coating layer to prevent the deterioration of the adhesive resin due to ultraviolet rays. The ultraviolet absorber is added to the adhesive resin, or an adhesive resin which copolymerizes a monomer having an ultraviolet absorber ability is used.
作為本發明之背面保護片構件膜的樹脂膜亦可選擇氟系樹脂膜。作為氟系樹脂係如上所述，期望使用以例如聚氟乙烯(PVF)、六氟丙烯/四氟乙烯共聚物(FEP)、乙烯/氯三氟乙烯共聚物(ECTFE)、或乙烯/四氟乙烯共聚物(ETFE)作為主要成分之樹脂。 A fluorine-based resin film may be selected as the resin film of the back surface protective sheet member film of the present invention. As the fluorine-based resin, as described above, it is desirable to use, for example, polyvinyl fluoride (PVF), hexafluoropropylene/tetrafluoroethylene copolymer (FEP), ethylene/chlorotrifluoroethylene copolymer (ECTFE), or ethylene/tetrafluoroethylene. Ethylene copolymer (ETFE) is the resin of the main component.
於本發明中，較佳為樹脂膜中形成有易接著層者，藉由依照封裝材片2、熱接著性樹脂膜、形成有易接著層的樹脂膜之順序，使熱接著性膜與樹脂膜之易接著層對向的方式來予以積層，由於使熱接著性樹脂膜與樹脂膜間之緊貼力安定，故較佳。 In the present invention, it is preferred that the adhesive film is formed with an easy-to-layer layer, and the thermal adhesive film and the resin are formed in the order of the sealing material sheet 2, the thermal adhesive resin film, and the resin film in which the easy-to-adhere layer is formed. It is preferable that the film is laminated in such a manner that the adhesion layer is opposed to each other, and the adhesion between the thermal adhesive resin film and the resin film is stabilized.
又，於本發明中，亦可在熱接著性膜中形成有易接著層者，依照封裝材片2、形成有易接著層之熱接著性樹脂膜、樹脂膜之順序，使熱接著性樹脂膜之易接著層與樹脂膜對向的方式來予以積層，由於同樣地使熱接著性樹脂膜與樹脂膜間之緊貼力安定，故較佳。 Further, in the present invention, an adhesive layer may be formed in the thermal adhesive film, and the thermal adhesive resin may be formed in the order of the sealing material sheet 2, the thermal adhesive resin film in which the adhesion layer is formed, and the resin film. It is preferable that the easy-adhesion layer of the film is laminated in such a manner as to face the resin film, and the adhesion between the thermal adhesive resin film and the resin film is stabilized in the same manner.
還有，於本發明中，亦可為熱接著性膜中形成有易接著層、在樹脂膜中形成有易接著層者，依照封裝材片2、形成有易接著層之熱接著性樹脂膜、形成有易 接著層的樹脂膜之順序，使熱接著性樹脂膜之易接著層與樹脂膜之易接著層對向的方式來予以積層，由於進一步使熱接著性樹脂膜與樹脂膜間之緊貼性提高，故較佳。 Further, in the present invention, it is also possible to form an easy-adhesion layer in the thermal adhesive film and an easy-adhesion layer in the resin film, and a thermal adhesive resin film in which an easy-to-attach layer is formed in accordance with the package sheet 2 Easy to form In the order of the resin film of the next layer, the easy-adhesion layer of the thermal adhesive resin film and the easy-adhesion layer of the resin film are laminated, and the adhesion between the thermal adhesive resin film and the resin film is further improved. Therefore, it is better.
作為本發明之太陽能電池模組用背面保護片構件膜之熱接著性樹脂膜或是樹脂膜中所形成的易接著層材料，可為丙烯酸樹脂、聚胺基甲酸酯樹脂、環氧樹脂、聚酯樹脂、聚醯胺、苯酚、聚烯烴、離子鍵聚合物、乙烯/乙酸乙烯酯共聚合樹脂、聚乙烯乙縮醛等、及該等之共聚物或混合物等之中任一種。易接著層之材料最佳為丙烯酸樹脂與異氰酸酯硬化劑之組合。作為該等易接著層材料，可為一液硬化型、二液硬化型、三液硬化型等之中任一種，基於接著性及防止氣泡發生之觀點，較佳為二液硬化型接著劑。易接著層之厚度較佳為0.1至15μm，更佳為0.5至10μm。 The heat-adhesive resin film of the back surface protective sheet member film for a solar cell module of the present invention or the easy-adhesive layer material formed in the resin film may be an acrylic resin, a polyurethane resin, an epoxy resin, or the like. Any of polyester resin, polyamine, phenol, polyolefin, ionomer, ethylene/vinyl acetate copolymer resin, polyvinyl acetal, and the like, and copolymers or mixtures thereof. The material of the easy-adhesion layer is preferably a combination of an acrylic resin and an isocyanate hardener. The material of the easy-adhesion layer may be any one of a one-liquid curing type, a two-liquid curing type, and a three-liquid curing type, and is preferably a two-liquid curing type adhesive from the viewpoint of adhesion and prevention of bubble generation. The thickness of the easy-adhesion layer is preferably from 0.1 to 15 μm, more preferably from 0.5 to 10 μm.
於本發明中，雖然於熱接著性樹脂膜或樹脂膜中形成易接著層之方法，並未被特別限定，但通常係將利用適當之溶劑稀釋上述材料之物予以塗布、乾燥而形成。此時，亦可於熱接著性樹脂膜或樹脂膜之成形時塗布。尤其將聚對苯二甲酸乙二酯或聚-2,6-萘二甲酸乙二酯之雙軸拉伸膜作為樹脂膜使用之情形，除了在同一步驟內能實施塗布與乾燥的成本優點之外，也藉由設定於縱向拉伸後繼續進行橫向拉伸的程序而能生產性佳地且較佳地獲得均勻的易接著層。塗布之方法能利用例如逆塗布法、噴霧塗布法、棒塗布法、照相凹版塗布法、 桿塗布法、模頭塗布法等。由於所形成的易接著層之膜厚係與塗布液之濃度或塗布量成比例，為了獲得既定的易接著層之膜厚，較佳將該等加以調整。 In the present invention, the method of forming the easy-adhesion layer in the thermal adhesive resin film or the resin film is not particularly limited. However, it is usually formed by applying and drying the material diluted with a suitable solvent. In this case, it can also be applied at the time of molding of the thermal adhesive resin film or the resin film. In particular, when a biaxially stretched film of polyethylene terephthalate or polyethylene-2,6-naphthalenedicarboxylate is used as a resin film, the cost advantage of coating and drying can be achieved in the same step. Further, it is also possible to obtain a uniform easy-to-adhere layer with good productivity and preferably by setting a procedure for continuing the transverse stretching after the longitudinal stretching. The coating method can utilize, for example, a reverse coating method, a spray coating method, a bar coating method, a gravure coating method, Rod coating method, die coating method, and the like. Since the film thickness of the easily-adhesive layer formed is proportional to the concentration or coating amount of the coating liquid, it is preferable to adjust the film thickness in order to obtain a predetermined film thickness.
又，藉由將上述材料與熱接著性樹脂膜或樹脂膜之材料一併加熱熔融、共擠出，也能獲得積層有易接著樹脂層之熱接著性樹脂膜或樹脂膜。 In addition, by heat-melting and co-extruding the above-mentioned material together with the material of the thermal adhesive resin film or the resin film, a thermally adhesive resin film or a resin film in which a resin layer is easily laminated can be obtained.
又，作成藉上述材料所得之單獨的易接著樹脂膜，即使依照封裝材片2、熱接著性樹脂膜、易接著樹脂膜、樹脂膜之順序積層，也能獲得作為熱接著性樹脂膜與樹脂膜間目的之緊貼力，進一步於該情形下，亦可在熱接著性樹脂膜或樹脂膜中至少一者的易接著樹脂膜側形成有易接著層者。 In addition, a separate adhesive resin film obtained by the above-mentioned materials can be obtained as a thermal adhesive resin film and resin even if laminated in the order of the sealing material sheet 2, the thermal adhesive resin film, the easy-adhesive resin film, and the resin film. Further, in this case, in the case where at least one of the thermally adhesive resin film or the resin film is easily formed on the resin film side, an easy adhesion layer may be formed.
針對積層有進行如此方式所得之易接著樹脂層的熱接著性樹脂膜或樹脂膜、或易接著樹脂膜，為了提高膜運送性或操作性，亦可進行壓紋加工。 The heat-adhesive resin film or the resin film or the easy-adhesive resin film in which the easy-to-attach resin layer obtained in this manner is laminated may be embossed in order to improve film transportability or workability.
作為該等之藉共擠出所得之易接著層積層或是為了單獨膜成形之易接著樹脂，除了上述易接著層材料之外，亦適合使用乙烯與選自丙烯酸、甲基丙烯酸、丙烯酸酯、甲基丙烯酸酯、丙烯酸環氧丙酯、甲基丙烯酸環氧丙酯、乙酸乙烯酯及順丁烯二酸酐中至少1種之共聚物，尤其，由於乙烯/甲基丙烯酸環氧丙酯共聚物(EGMA)提高熱接著性樹脂膜與樹脂膜之緊貼力，故較佳。藉共擠出所得之熱接著性樹脂膜或是樹脂膜中之易接著樹脂層的厚度、或是單獨易接著樹脂層的厚度較佳為5至100μm，更佳為10至50μm。 As an easy-to-layer laminate obtained by co-extrusion or as an easy-to-attach resin for film formation alone, in addition to the above-mentioned easy-to-layer material, ethylene and a selected from the group consisting of acrylic acid, methacrylic acid, and acrylate are also suitable. a copolymer of at least one of methacrylate, glycidyl acrylate, glycidyl methacrylate, vinyl acetate and maleic anhydride, especially due to ethylene/glycidyl methacrylate copolymer (EGMA) is preferred because it improves the adhesion between the thermal adhesive resin film and the resin film. The thickness of the easily-adhesive resin layer in the thermal adhesive resin film or the resin film obtained by co-extrusion, or the thickness of the resin layer which is easily followed by the bonding is preferably from 5 to 100 μm, more preferably from 10 to 50 μm.
於本發明中，為了顯現目的之緊貼強度，無關於上述2片之背面保護片構件膜各自有無易接著層，所對向的面中至少一側面較佳為低壓、或常壓下予以電漿處理之物。於上述2片之背面保護片構件膜為未形成有易接著層之接著性樹脂膜及未形成有易接著層的樹脂膜之情形下，較佳在所對向的面中至少一者實施該等之處理，進一步較佳在兩側面予以處理。 In the present invention, in order to visualize the adhesion strength of the object, it is irrelevant whether or not each of the two back surface protective sheet member films has an easy-to-adhere layer, and at least one of the opposite faces is preferably low pressure or charged under normal pressure. Slurry treatment. In the case where the two back surface protective sheet member films are an adhesive resin film in which an easy adhesion layer is not formed and a resin film in which an easy adhesion layer is not formed, it is preferable to carry out the method on at least one of the facing surfaces. The treatment is further preferably processed on both sides.
此處所謂的低壓電漿處理係指在1.3至133Pa左右之低壓的特定氣體環境下，藉由因直流、在商業專用頻率‧高頻‧微波頻率下之外加高壓電壓使其發生的輝光放電而活化表面之方法。於採用磁控管方式的輝光放電之情形下，在0.013至1.3Pa下之放電也為可能，為了增多藉由輝光放電所活化的氣體種類之量、提高處理效果，較佳在0.1至100Pa範圍之壓力下處理。又，所謂常壓電漿處理係指在一大氣壓之特定氣體環境中進行放電處理。為了保持氣體環境之純度，裝置結構上成為0.05至0.15MPa左右的減壓或正壓之情形亦可設為常壓電漿處理。該等電漿處理所用之氣體係根據進行電漿處理之材料而選擇氧、氮、氬、氦、氖、二氧化碳、笑氣、氫、甲烷等之碳氫氣體、氨、及該等之混合氣體等。該等電漿處理的處理強度能利用外加電力與處理速度之關係而求出，從處理效果與經濟性之均衡而言，較佳為以50至5000W‧分鐘/m2之處理強度進行處理。 The term "low-pressure plasma treatment" as used herein refers to a glow discharge that occurs by applying a high-voltage voltage to a commercial-specific frequency, a high-frequency ‧ microwave frequency, in a specific gas atmosphere of a low voltage of about 1.3 to 133 Pa. And the method of activating the surface. In the case of a glow discharge using a magnetron method, discharge at 0.013 to 1.3 Pa is also possible, and in order to increase the amount of gas activated by glow discharge and to improve the treatment effect, it is preferably in the range of 0.1 to 100 Pa. Handle under pressure. Further, the so-called normal piezoelectric slurry treatment means that the discharge treatment is performed in a specific gas atmosphere of one atmosphere. In order to maintain the purity of the gas atmosphere, the device may be subjected to a normal pressure slurry treatment at a reduced pressure or a positive pressure of about 0.05 to 0.15 MPa. The gas system used for the plasma treatment selects hydrocarbon gas such as oxygen, nitrogen, argon, helium, neon, carbon dioxide, nitrous oxide, hydrogen, methane, ammonia, and the like according to the material for plasma treatment. Wait. The treatment intensity of the plasma treatment can be determined by the relationship between the applied electric power and the processing speed, and it is preferable to treat the treatment strength and the economical efficiency with a treatment intensity of 50 to 5000 W ‧ min/m 2 .
期望本發明之背面保護片構件膜的總厚度在100至400μm之範圍。 It is desirable that the total thickness of the back protective sheet member film of the present invention is in the range of 100 to 400 μm.
若作成100μm以上的話，能使耐絕緣性符合，同時也變得容易解決使連接太陽能電池單元之佈線變得透明易見之問題。若作成400μm以下的話，能良好地保持切斷性。 When the thickness is 100 μm or more, the insulation resistance can be matched, and the wiring for connecting the solar battery cells can be easily solved. When the thickness is 400 μm or less, the cutting property can be favorably maintained.
在本發明之太陽能電池模組之製造方法中，其特徵係使既定尺寸之表面保護片、封裝材片1、太陽能電池單元、封裝材片2、及2片以上之背面保護片構件膜重疊，藉加熱及壓黏處理而將該等一體成型。較佳將封裝材片及2片以上之背面保護片構件膜切斷成既定尺寸時，從各捲起部同時捲起該等複數膜，也在重疊複數片之狀態下，同時1次切斷複數片。尤其使用單獨易接著樹脂膜之情形，薄、無剛性之易接著樹脂膜容易有皺紋，操作為困難，但如上所述，藉由重疊複數片之狀態下同時1次切斷，而難以產生皺紋、使重疊膜時之操作變得容易。 In the method of manufacturing a solar cell module of the present invention, the surface protective sheet, the encapsulating sheet 1, the solar cell unit, the encapsulating sheet 2, and the two or more back protective sheet member films of a predetermined size are overlapped. These are integrally molded by heating and pressure bonding treatment. When the package sheet and the two or more back surface protection sheet member films are cut into a predetermined size, the plurality of films are simultaneously wound up from the respective winding portions, and the plurality of sheets are simultaneously stacked and simultaneously cut off. Multiple films. In particular, in the case where the resin film is easily adhered to alone, the resin film is easy to be wrinkled and is difficult to handle, and as described above, it is difficult to generate wrinkles by simultaneously cutting one or more sheets in a state in which a plurality of sheets are overlapped. It makes the operation of overlapping films easy.
在本發明之太陽能電池模組之製造方法中，重要的是藉由加熱及壓黏處理表面保護片、封裝材片1、太陽能電池單元、封裝材片2、及2片以上之背面保護片構件膜而一體成型時，根據成型時之加熱溫度及壓黏條件所積層的封裝材片2、與對向於此之背面保護片構件膜間的緊貼強度為40N/cm以上。若封裝材片2、與對向於此之背面保護片構件膜間的緊貼強度低於40N/cm時，於太陽能電池模組之設置時或設置後，由於產生剝離而經不起使用。 In the method of manufacturing a solar cell module of the present invention, it is important to heat-treat and press-treat the surface protection sheet, the package material sheet 1, the solar battery unit, the package material sheet 2, and the two or more back surface protection sheet members. When the film is integrally molded, the adhesion strength between the package sheet 2 laminated according to the heating temperature and the pressure-bonding condition at the time of molding and the film of the back surface protective sheet member opposed thereto is 40 N/cm or more. When the adhesion strength between the package sheet 2 and the back protective sheet member film is less than 40 N/cm, it cannot be used due to peeling during the installation or after installation of the solar cell module.
又，以同樣的理由，重要的是根據成型時之 加熱溫度及壓黏條件所積層的2片以上之背面保護片構件膜間的緊貼強度中任一者皆為1N/cm以上，較佳為5N/cm以上，進一步較佳為10N/cm以上。 Again, for the same reason, it is important to Any one of the adhesion strength between the two or more back surface protective sheet member films laminated under the heating temperature and the pressure-bonding condition is 1 N/cm or more, preferably 5 N/cm or more, and more preferably 10 N/cm or more. .
該等緊貼強度也能從所完成的太陽能電池模組切割試樣而測定，藉由根據成型時之加熱溫度及壓黏條件預先積層並確認表面保護片、封裝材片1、2、熱接著性樹脂膜、及樹脂膜，能於實際之太陽能電池模組成型前，判斷該等材料之適合性。 The adhesion strength can also be measured by cutting the sample from the completed solar cell module, and preliminarily layering and confirming the surface protection sheet, the package material sheet 1, 2, and the heat according to the heating temperature and the pressure bonding condition at the time of molding. The resin film and the resin film can determine the suitability of the materials before the actual solar cell module is molded.
以下，列舉實施例而說明本發明，但本發明並不受該等實施例所限定。本發明之特性值係根據下列所示之測定方法及評估基準所進行者。 Hereinafter, the present invention will be described by way of examples, but the present invention is not limited by the examples. The characteristic values of the present invention are based on the measurement methods and evaluation criteria shown below.
(評估方法) (evaluation method)
以下敘述下列實施例及比較例的模擬太陽能電池模組製作方法、各種評估項目之評估方法。 The following describes the methods for fabricating the simulated solar cell module and the evaluation methods for various evaluation items in the following examples and comparative examples.
(1)模擬太陽能電池模組製作方法 (1) Method for manufacturing analog solar cell module
於厚度3.2mm、200mm×200mm之玻璃(AGC FABLITEC(股)製)上重疊2片厚度0.45mm之EVA片(SANVIC(股)製「PV-45FR000」)，進一步重疊2片以上之背面保護片構件膜後，使用NBC(股)製太陽能電池模組積層體(LM50×50-S)而真空積層，製作模擬太陽能電池模組。 Two EVA sheets ("PV-45FR000" manufactured by SANVIC Co., Ltd.) having a thickness of 0.45 mm were superposed on a glass having a thickness of 3.2 mm and 200 mm × 200 mm (manufactured by AGC FABLITEC Co., Ltd.), and two or more back protective sheets were further overlapped. After the film was formed, a solar cell module laminate (LM50×50-S) made of NBC (manufacture) was vacuum-laminated to produce a simulated solar cell module.
(2)表面保護片構件膜間緊貼強度(N/cm) (2) Adhesion strength between membranes of surface protection sheet members (N/cm)
於利用記載於(1)之方法而製作模擬太陽能電池模組後，從背面保護片側起切成1cm寬度，在太陽能電池模組用背面保護片構件膜間剝離之後，使用ORIENTEC公 司製TENSILON PTM-50，以剝離角度180°、剝離速度100mm/分鐘測定剝離強度，將該數值設為緊貼強度。 After the dummy solar cell module was produced by the method described in (1), it was cut into a width of 1 cm from the side of the back protective sheet, and after peeling off between the back protective sheet members of the solar cell module, ORIENTEC Corporation was used. The TENSILON PTM-50 was used to measure the peel strength at a peeling angle of 180° and a peeling speed of 100 mm/min. This value was used as the adhesion strength.
(3)與封裝材片之緊貼強度(N/cm) (3) Adhesion strength with package sheet (N/cm)
於利用記載於(1)之方法而製作模擬太陽能電池模組後，從太陽能電池模組用背面保護片構件側起切成1cm寬度後，在EVA片與背面保護片構件膜間剝離之後，使用ORIENTEC公司製TENSILON PTM-50，以剝離角度180°、剝離速度100mm/分鐘測定剝離強度，將該數值設為緊貼強度。 After the dummy solar cell module was produced by the method described in (1), the solar cell module was cut into a width of 1 cm from the side of the back protective sheet member, and then peeled off between the EVA sheet and the back protective sheet member film. The TENSILON PTM-50 manufactured by ORIENTEC Co., Ltd. measured the peel strength at a peeling angle of 180° and a peeling speed of 100 mm/min, and this value was used as the adhesion strength.
(實施例1) (Example 1)
使用耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S，且利用岡崎機械工業(股)製之膜塗布機，在180℃之乾燥溫度下熱處理44秒。之後，相對於DIC(股)製丙烯酸系易接著塗布機DICSEAL HS EXP120228之100重量份，添加DIC(股)製胺基甲酸酯硬化劑G-18N之5.8重量份，於進一步添加作為添加劑之DIC(股)製環氧系化合物ADDITIVE EP-10之4.8重量份後，利用稀釋溶劑稀釋，利用岡崎機械工業(股)製之膜塗布機，在120℃之乾燥溫度下，使乾燥後之塗布層厚度成為3.0g/m2的方式來形成易接著層。之後，利用上述(1)之方法，將Toray Film加工(股)製之150μm白色聚丙烯膜B011W作為熱接著性樹脂膜使用，依照朝向白色聚丙烯膜側的上述耐水解性聚酯膜之順序來積層易接著層而設置於NPC(股)製太陽能電池模組積層機(LM-50×50-S)內之後，在真空時間5分鐘、控制時間1分鐘、壓製時間15 分鐘、溫度145℃之條件下加熱壓黏。壓黏後，在室溫下冷卻而製作模擬太陽能電池模組。 A 125 μm "LUMILLAR" (registered trademark) × 10 S made of a hydrolysis-resistant polyester film, Toray Co., Ltd., was used, and heat-treated at a drying temperature of 180 ° C for 44 seconds using a film coater manufactured by Okazaki Machinery Co., Ltd. Thereafter, 5.8 parts by weight of a DIC (manufactured) urethane curing agent G-18N was added to 100 parts by weight of a DIC (acrylic) easy-to-coat coater DICSEAL HS EXP120228, and further added as an additive. 4.8 parts by weight of an epoxy compound ADDITIVE EP-10 manufactured by DIC (Shares), diluted with a diluent solvent, and coated at a drying temperature of 120 ° C using a film coater manufactured by Okazaki Machinery Co., Ltd. The layer thickness was 3.0 g/m 2 to form an easy-adhesion layer. Then, a 150 μm white polypropylene film B011W manufactured by Toray Film Co., Ltd. was used as a thermal adhesive resin film by the method of the above (1), and laminated in the order of the hydrolysis-resistant polyester film toward the white polypropylene film side. After being placed in the NPC (stock) solar cell module laminator (LM-50×50-S), it is easy to laminate the layer, and the vacuum time is 5 minutes, the control time is 1 minute, the pressing time is 15 minutes, and the temperature is 145 °C. Under heat and pressure. After pressure bonding, it was cooled at room temperature to produce a simulated solar cell module.
(實施例2) (Example 2)
除了將在實施例1記載之熱接著性樹脂膜變更成Toray Film加工(股)製白色聚乙烯膜4807W的厚度150μm者之外，與實施例1同樣地實施。 The same procedure as in Example 1 was carried out except that the thermal adhesive resin film described in Example 1 was changed to a thickness of 150 μm of a white polyethylene film 4807W made of Toray Film.
(實施例3) (Example 3)
除了使用雙面易接著處理之氟樹脂膜(Toray Film加工(股)製50μm「TOYOFLON」(註冊商標)EL2)取代在實施例1記載之耐水解性聚酯膜，將熱接著性樹脂膜變更成Toray Film加工(股)製50μm白色聚乙烯膜4807W之外，與實施例1同樣地實施。 In place of the hydrolysis-resistant polyester film described in Example 1, a fluororesin film (50 μm "TOYOFLON" (registered trademark) EL2 manufactured by Toray Film Processing Co., Ltd.) which is easy to handle on both sides, was used, and the thermal adhesive resin film was changed to Toray. The same procedure as in Example 1 was carried out except that a 50 μm white polyethylene film of 4807 W was produced by a film processing.
(實施例4) (Example 4)
除了將在實施例1記載之熱接著性樹脂膜變更成未拉伸的耐綸膜(Toray Film加工(股)製100μm「REIFAN」(註冊商標)NO)之外，與實施例1同樣地實施。 The same procedure as in Example 1 was carried out, except that the thermal adhesive resin film described in Example 1 was changed to an unstretched nylon film (100 μm "REIFAN" (registered trademark) NO manufactured by Toray Film Processing Co., Ltd.). .
(實施例5) (Example 5)
除了使用雙面易接著處理之氟樹脂膜(Toray Film加工(股)製50μm「TOYOFLON」(註冊商標)EL2)取代在實施例1記載的熱接著性樹脂膜之外，與實施例1同樣地實施。 In the same manner as in Example 1, except that the fluororesin film (50 μm "TOYOFLON" (registered trademark) EL2 manufactured by Toray Film Processing Co., Ltd.) was used in the same manner as in Example 1 except that the hot-adhesive resin film described in Example 1 was used. Implementation.
(實施例6) (Example 6)
將耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S作為樹脂膜使用，利用岡崎機械工業(股)製之膜塗布機，在180℃之乾燥溫度下熱處理44秒。 又，將包含下列A層/B層/C層之3層構造，使用單軸之熔融擠出機而在220℃下熔融共擠出下列記載之各層樹脂，將在保持於30℃之澆鑄轉筒上冷卻固化所得之厚度150μm的白色聚丙烯膜作為具有易接著樹脂膜層之熱接著性樹脂膜使用。各層之厚度構成比例係A層/B層/C層=20%/70%/10%。 A 125 μm "LUMILLAR" (registered trademark) × 10 S made of a hydrolysis-resistant polyester film, Toray, was used as a resin film, and heat-treated at a drying temperature of 180 ° C for 44 seconds using a film coater manufactured by Okazaki Machinery Co., Ltd. Further, a three-layer structure including the following A layer/B layer/C layer was used, and the resin of each layer described below was melt-co-extruded at 220 ° C using a uniaxial melt extruder, and the casting was maintained at 30 ° C. A white polypropylene film having a thickness of 150 μm obtained by cooling and solidifying on a cylinder was used as a thermal adhesive resin film having an easy-to-attach resin film layer. The thickness of each layer constitutes a ratio of A layer / B layer / C layer = 20% / 70% / 10%.
使用於A層之樹脂：混合40質量份之熔點127℃、密度0.940g/cm3、熔融流動速率(MFR)5.0g/10分鐘之直鏈狀低密度聚乙烯；10質量份之熔點112℃、密度0.912g/cm3、MFR 4.0g/10分鐘之低密度聚乙烯；及50質量份之熔點150℃、密度0.900g/cm3、MFR 7g/10分鐘之乙烯含量4莫耳%之乙烯/丙烯無規共聚物的樹脂。 Resin for layer A: 40 parts by mass of a linear low-density polyethylene having a melting point of 127 ° C, a density of 0.940 g/cm 3 , a melt flow rate (MFR) of 5.0 g/10 min; a melting point of 10 parts by mass of 112 ° C , low density polyethylene having a density of 0.912 g/cm 3 , MFR 4.0 g/10 min; and 50 parts by mass of ethylene having a melting point of 150 ° C, a density of 0.900 g/cm 3 , an MFR of 7 g/10 min of ethylene content of 4 mol % / Resin of a propylene random copolymer.
使用於B層之樹脂：相對於熔點162℃之同元聚丙烯88質量份，混合氧化鈦12質量份的樹脂。 Resin for layer B: 12 parts by mass of a resin of titanium oxide was mixed with 88 parts by mass of the homopolypropylene having a melting point of 162 °C.
使用於C層之易接著樹脂：住友化學(股)製「Bond Fast」(註冊商標)Grade E(甲基丙烯酸環氧丙酯含量12重量%、MFR 3.0g/10分鐘之乙烯/甲基丙烯酸環氧丙酯共聚物)。 Easy-to-Bake Resin for Use in C-Layer: "Bond Fast" (registered trademark) Grade E, manufactured by Sumitomo Chemical Co., Ltd. (12% by weight of glycidyl methacrylate, MFR 3.0 g/10 min of ethylene/methacrylic acid) Glycidyl acrylate copolymer).
使易接著樹脂層之C層符合耐水解性聚酯膜，利用與實施例1同樣的方法而製作模擬太陽能電池模組。 A simulated solar cell module was produced in the same manner as in Example 1 except that the C layer of the easily-adhesive resin layer was made into a hydrolysis-resistant polyester film.
(實施例7) (Example 7)
除了將耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S作為樹脂膜使用，加上實施在實施例1記載的易接著塗布之外，利用與實施例6同樣的方法而製作模擬太陽能電池模組。 In the same manner as in Example 6, except that 125 μm of "LUMILLAR" (registered trademark) × 10 S made of a hydrolysis-resistant polyester film Toray was used as a resin film, and the easy-to-coating described in Example 1 was carried out. Create a simulated solar cell module.
(實施例8) (Example 8)
除了將在實施例1記載之樹脂膜變更為耐水解性聚對苯二甲酸乙二酯層與白色耐水解性聚對苯二甲酸乙二酯層的厚度比為1：5之白色耐水解性聚酯膜，Toray(股)製75μm「LUMILLAR」(註冊商標)MX11，又將熱接著性樹脂膜變更為未拉伸之聚乙烯膜(Toray Film加工(股)製50μm「LL Film」4801)，使MX11之耐水解性聚對苯二甲酸乙二酯層對向於4801的方式來積層之外，與實施例1同樣地實施。 In addition to changing the resin film described in Example 1 to a white hydrolysis-resistant polyester film having a thickness ratio of 1:5 to the hydrolysis-resistant polyethylene terephthalate layer and the white hydrolysis-resistant polyethylene terephthalate layer, Toray ( In the case of a 75 μm "LUMILLAR" (registered trademark) MX11, the thermal adhesive resin film was changed to an unstretched polyethylene film (50 μm "LL Film" 4801 manufactured by Toray Film Co., Ltd.) to hydrolyze the MX11. The same was carried out in the same manner as in Example 1 except that the ethylene terephthalate layer was laminated in the same manner as in the case of 4801.
(實施例9) (Example 9)
使用耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S，利用岡崎機械工業(股)製之膜塗布機，在180℃之乾燥溫度下熱處理44秒。 A 125 μm "LUMILLAR" (registered trademark) × 10 S made of a hydrolysis-resistant polyester film, Toray Co., Ltd., was used, and heat-treated at a drying temperature of 180 ° C for 44 seconds using a film coater manufactured by Okazaki Machinery Co., Ltd.
又，將住友化學(股)製「Bond Fast」(註冊商標)Grade 7M(甲基丙烯酸環氧丙酯含量6重量%、丙烯酸甲酯含量27重量%、MFR 7.0g/10分鐘之乙烯/甲基丙烯酸環氧丙酯/丙烯酸甲酯共聚物)作為易接著樹脂膜，利用熔融擠出機而在200℃下熔融擠出，在保持於30℃之澆鑄轉筒上冷卻固化而作成厚度20μm的易接著樹脂膜。 In addition, Sumitomo Chemical Co., Ltd. "Bond Fast" (registered trademark) Grade 7M (glycidyl methacrylate content 6 wt%, methyl acrylate content 27 wt%, MFR 7.0 g/10 min ethylene / A) The epoxy propyl acrylate/methyl acrylate copolymer was melt-extruded at 200 ° C by a melt extruder and cooled and solidified on a casting drum maintained at 30 ° C to have a thickness of 20 μm. It is easy to follow the resin film.
依照作為熱接著性樹脂膜之Toray Film加工(股)製之150μm白色聚丙烯膜B011W、上述易接著樹脂膜、還有上述耐水解性聚酯膜之順序進行積層，利用與實施例1同樣的方法而製作模擬太陽能電池模組。 The 150 μm white polypropylene film B011W manufactured by Toray Film processing (manufactured by Toray Film) as a thermal adhesive resin film, the above-mentioned easy-to-attach resin film, and the hydrolysis-resistant polyester film were laminated in this order, and the same method as in Example 1 was carried out. Create a simulated solar cell module.
(實施例10) (Embodiment 10)
於實施例1，熱處理耐水解性聚酯膜Toray(股)製 125μm「LUMILLAR」(註冊商標)×10S後，利用下列之條件進行電漿處理以取代易接著塗布加工。 In Example 1, heat-treated hydrolysis resistant polyester film Toray (manufactured by the company) After 125 μm "LUMILLAR" (registered trademark) × 10 S, plasma treatment was carried out under the following conditions to replace the easy-to-coat process.
處理寬度：0.1m Processing width: 0.1m
處理速度：3m/分鐘 Processing speed: 3m / minute
導入氣體：氮 Introduced gas: nitrogen
壓力：40Pa Pressure: 40Pa
電源頻率：50kHz Power frequency: 50kHz
外加電力：60W(外加電力係設為高頻電源之真空管的板極電壓與板極電流之乘積而求出。) Applied power: 60 W (The external power is obtained by multiplying the plate voltage of the vacuum tube of the high-frequency power source and the plate current.)
處理強度：200W‧分鐘/m2 Treatment intensity: 200W‧ minutes/m 2
同樣地，Toray Film加工(股)製之150μm白色聚丙烯膜B011W也在相同條件下實施低壓電漿處理。 Similarly, a 150 μm white polypropylene film B011W manufactured by Toray Film Co., Ltd. was subjected to low-pressure plasma treatment under the same conditions.
使已實施低壓電漿處理之彼此面對向，利用與實施例1同樣的條件而製作模擬太陽能電池模組。 The simulated solar cell module was fabricated under the same conditions as in Example 1 by subjecting the low-pressure plasma treatment to each other.
(實施例11) (Example 11)
於實施例1，在與實施例8相同條件下，僅對Toray Film加工(股)製之150μm白色聚丙烯膜B011W實施低壓電漿處理。使形成耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)的易接著層之面、與已實施B011W的低壓電漿處理之面對向，利用與實施例1同樣的條件而製作模擬太陽能電池模組。 In Example 1, under the same conditions as in Example 8, only a 150 μm white polypropylene film B011W manufactured by Toray Film Processing Co., Ltd. was subjected to low-pressure plasma treatment. The surface of the easy-adhesion layer of 125 μm "LUMILLAR" (registered trademark) made of the hydrolysis-resistant polyester film Toray was formed to face the low-pressure plasma treatment of B011W, and the same conditions as in Example 1 were used. Create a simulated solar cell module.
(實施例12) (Embodiment 12)
於實施例6，熱處理耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S後，在與實施例10相同條件下，進行低壓電漿處理。使白色聚丙烯膜之易 接著樹脂層之C層與耐水解性聚酯膜之低壓電漿處理面對向，製作模擬太陽能電池模組。 In Example 6, after heat-treating the hydrolysis-resistant polyester film Toray (125 μm) "LUMILLAR" (registered trademark) × 10 S, the low-pressure plasma treatment was carried out under the same conditions as in Example 10. Make the white polypropylene film easy Next, the C layer of the resin layer and the low-pressure plasma treatment of the hydrolysis-resistant polyester film were faced to each other to prepare a simulated solar cell module.
(實施例13) (Example 13)
於實施例10，耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S及Toray Film加工(股)製之150μm白色聚丙烯膜B011W的低壓電漿處理下，使用將外加電力設為30W、將處理速度設為4m/分鐘而將處理強度設為100W‧分鐘/m2而製作模擬太陽能電池模組。 In Example 10, a low-pressure plasma treatment of a 150 μm "LUMILLAR" (registered trademark) × 10S and a 150 μm white polypropylene film B011W made of Toray Film (Toray Film) manufactured by Toray Co., Ltd., which is a hydrolysis-resistant polyester film, was used. A simulated solar cell module was produced by setting the power to 30 W, the processing speed to 4 m/min, and the processing intensity to 100 W ‧ min/m 2 .
(實施例14) (Example 14)
於實施例10，將導入氣體變更為氬，在一大氣壓下進行常壓電漿處理。將外加電壓設為100W、將處理速度設為10m/分鐘、將處理強度設為100W‧分鐘/m2而處理耐水解性聚酯膜Toray(股)製125μm「LUMILLAR」(註冊商標)×10S及Toray Film加工(股)製之150μm白色聚丙烯膜B011W。使該等之常壓電漿處理面彼此對向而製作模擬太陽能電池模組。 In Example 10, the introduction gas was changed to argon, and the normal piezoelectric slurry treatment was performed under an atmospheric pressure. The applied pressure was set to 100 W, the treatment speed was set to 10 m/min, and the treatment strength was set to 100 W ‧ min/m 2 to treat the hydrolysis-resistant polyester film Toray (125 μm) "LUMILLAR" (registered trademark) × 10S and Toray Film processing (stock) 150 μm white polypropylene film B011W. The simulated solar cell modules were fabricated by facing the normal piezoelectric slurry treated surfaces.
(比較例1) (Comparative Example 1)
除了添加DIC(股)製丙烯酸系易接著塗布劑DICSEAL HS WHITE EXP120820之100重量份、DIC(股)製硬化劑DF HARDENER HA-100之12重量份、DIC(股)製環氧系添加劑EP之103重量份，且以稀釋溶劑稀釋塗布於實施例1記載之耐水解性聚酯膜的丙烯酸系易接著塗布劑塗布之外，與實施例1同樣地製作模擬太陽能電池模組。 In addition to 100 parts by weight of the DIC (stock) acrylic-based adhesive coating agent DICSEAL HS WHITE EXP120820, 12 parts by weight of the DIC hardener DF HARDENER HA-100, and the DIC epoxy resin additive EP A simulated solar cell module was produced in the same manner as in Example 1 except that the acrylic-based easy-adhesive coating agent applied to the hydrolysis-resistant polyester film described in Example 1 was diluted with a diluent solvent in an amount of 103 parts by weight.
(比較例2) (Comparative Example 2)
使用在實施例1記載之未設置熱接著性樹脂膜B011W與易接著塗布層之耐水解性聚酯膜「LUMILLAR」(註冊商標)×10S，利用上述(1)之方法，於真空時間5分鐘、控制時間1分鐘、壓製時間15分鐘、溫度145℃的條件下實施加熱壓黏處理，壓黏後，在室溫下冷卻，製作模擬太陽能電池模組。 The hydrolysis-resistant polyester film "LUMILLAR" (registered trademark) × 10S, which is not provided with the thermal adhesive resin film B011W and the easy-to-coat layer described in the first embodiment, was controlled by the method of the above (1) at a vacuum time of 5 minutes. The heating and pressure-bonding treatment was carried out under the conditions of a time of 1 minute, a pressing time of 15 minutes, and a temperature of 145 ° C, and after pressure-bonding, it was cooled at room temperature to prepare a simulated solar cell module.
(比較例3) (Comparative Example 3)
於實施例1，利用上述(1)之方法，於真空時間5分鐘、控制時間1分鐘、壓製時間15分鐘、溫度100℃之條件下實施加熱壓黏處理，壓黏後，在室溫下冷卻而製作模擬太陽能電池模組。 In Example 1, the method of the above (1) was carried out, and the heating and pressure-bonding treatment was carried out under the conditions of a vacuum time of 5 minutes, a control time of 1 minute, a pressing time of 15 minutes, and a temperature of 100 ° C. After the pressure-bonding, it was cooled at room temperature. And make a simulated solar battery module.
將實施例1至13、比較例1至3之評估結果顯示於表1、表2。 The evaluation results of Examples 1 to 13 and Comparative Examples 1 to 3 are shown in Tables 1 and 2.
由於比較例1係易接著層材料的選擇不適當，熱接著性樹脂膜與樹脂膜之接著不足。 Since Comparative Example 1 was not suitable for the selection of the material for the adhesive layer, the thermal adhesive resin film and the resin film were insufficient.
由於比較例2未設置易接著層，未能獲得熱接著性樹脂膜與樹脂膜間之接著。 Since Comparative Example 2 was not provided with an easy-adhesion layer, the subsequent connection between the thermal adhesive resin film and the resin film could not be obtained.
由於比較例3係用以加熱壓黏處理之溫度低至100℃，未能獲得封裝材片2與熱接著性樹脂膜間之接著。 Since Comparative Example 3 was used to heat the pressure-sensitive treatment at a temperature as low as 100 ° C, the subsequent connection between the package sheet 2 and the thermal adhesive resin film was not obtained.
藉本發明所進行的太陽能電池模組之製造方法，其能一體成型複數之背面保護片構件膜，藉由解決背面保護片彎曲之問題而能以更高的收率來製造太陽能電池模組，由於也能減低背面保護片構件膜之損失，故亦能有助於省資源化。 According to the method for manufacturing a solar cell module according to the present invention, a plurality of back surface protective sheet member films can be integrally formed, and a solar cell module can be manufactured at a higher yield by solving the problem of bending of the back protective sheet. Since the loss of the back protective sheet member film can also be reduced, it can also contribute to resource saving.
1‧‧‧表面保護片 1‧‧‧Surface protection film
2‧‧‧封裝材片1 2‧‧‧Package sheet 1
3‧‧‧太陽能電池單元 3‧‧‧Solar battery unit
4‧‧‧封裝材片2 4‧‧‧Package sheet 2
5‧‧‧背面保護片構件膜 5‧‧‧Back protective sheet member film
6‧‧‧熱接著性樹脂膜 6‧‧‧Hot adhesive resin film
7‧‧‧樹脂膜 7‧‧‧ resin film
8‧‧‧易接著層 8‧‧‧Easy layer
9‧‧‧太陽能電池面板 9‧‧‧Solar battery panel
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