WO2011108805A2 - Manufacturing method for rear protection sheet for solar cell module - Google Patents

Manufacturing method for rear protection sheet for solar cell module Download PDF

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Publication number
WO2011108805A2
WO2011108805A2 PCT/KR2010/008754 KR2010008754W WO2011108805A2 WO 2011108805 A2 WO2011108805 A2 WO 2011108805A2 KR 2010008754 W KR2010008754 W KR 2010008754W WO 2011108805 A2 WO2011108805 A2 WO 2011108805A2
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fluorine
solar cell
cell module
resin layer
adhesive resin
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PCT/KR2010/008754
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French (fr)
Korean (ko)
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WO2011108805A3 (en
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박원기
이환광
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청운대학교 산학협력단
주식회사 에스에프씨
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Publication of WO2011108805A2 publication Critical patent/WO2011108805A2/en
Publication of WO2011108805A3 publication Critical patent/WO2011108805A3/en

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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
    • 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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  • the present invention relates to a method for manufacturing a back protective sheet for a solar cell module, and more particularly, to manufacture a back protective sheet for a solar cell module by laminating a base film and a fluorine based film on a fluorine-based film wound up using an adhesive resin layer. It is about how to.
  • a solar cell module is a semiconductor device that converts light energy into electrical energy using a photoelectric effect, and has been in the spotlight with the advantages of pollution-free, noise-free, and infinite supply energy.
  • Such a solar cell module is usually manufactured by sequentially stacking tempered glass, EVA film, solar cell, EVA film, the back protective sheet, the laminated module is subjected to a high temperature compression laminating process in a vacuum.
  • a protective sheet for protecting the solar cell module as a back sheet is provided on the rear surface of the solar cell module to withstand the external environment such as snow and rain.
  • the protective sheet is made of a durable material that can withstand high temperatures and humidity in order to provide a waterproof, insulating and UV protection role and at the same time extend the life of the solar cell module.
  • the solar cell module back protective sheet has a structure in which PVF / PET / PVF is laminated, and in some products, a structure in which resins such as fluorine-based films such as PVF / PET / EVA and PE are laminated in a film form. It is also manufactured.
  • Such a solar cell module back protective sheet is usually laminated by first laminating a PVF film on a PET film, and then cured first, and another PVF film or a resin film such as EVA or PE is laminated on the PET film on which the PVF film is laminated. It is manufactured by dry lamination method of secondary lamination by lamination by secondary lamination.
  • the present invention forms an adhesive resin layer on one side of the fluorine-based film through melt extrusion, and then laminates the base film, and then forms an adhesive resin layer on the one side of the laminated base film by melt-extrusion, and then laminates the fluorine-based film.
  • the method of manufacturing the back surface protective film for solar cell modules by a continuous process is provided.
  • the present invention comprises the steps of winding up a fluorine-based film wound on a roller;
  • It provides a method for manufacturing a back protective sheet for a solar cell module comprising the step of laminating a fluorine-based film on one side of the secondary adhesive resin layer is formed.
  • the present invention forms an adhesive resin layer on one side of the fluorine-based film through melt extrusion, and then laminates the base film, and then forms an adhesive resin layer on the one side of the laminated base film by melt-extrusion, and then laminates the fluorine-based film.
  • FIG. 1 is a flow chart showing a method of manufacturing a back protective sheet for a solar cell module according to the present invention
  • FIG. 2 is a cross-sectional view showing the configuration of a back protective sheet for a solar cell module according to the present invention.
  • the present invention Unwinding the fluorine-based film wound on the roller;
  • the solar cell module including the step of laminating the fluorine-based film on a surface formed with the second adhesive resin layer can provide a method of manufacturing a protection sheet.
  • the rear protective sheet for a solar cell module according to the present invention is a sheet for protecting the solar cell module, and may be referred to as a back sheet because it is attached and applied to the rear surface of the solar cell module.
  • the solar cell module back protective sheet is formed by melting and extruding a polymer resin on a fluorine-based film to form an adhesive resin layer, and then laminating, preferably laminating, and laminating the base film on the back surface of the base film on which the fluorine-based film is laminated.
  • the polymer resin is melt-extruded to form an adhesive resin layer and then laminated with a fluorine-based film.
  • the base film may use PET, low oligomer PET, PI, PEN or a mixture thereof, and the fluorine-based film may use PVF, PVDF, THV resin, TFE, PCTFE, ETFE or a mixture thereof. It is good.
  • the polymer resin for forming the adhesive resin layer preferably the primary and secondary adhesive resin layer is a hot melting resin, for example, hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use.
  • the base film is laminated with the fluorine-based film by the adhesive resin layer without a separate drying process.
  • melt extrusion it is preferable to melt and extrude the extruded polymer resin at a temperature of 280 to 330 ° C., and to extrude the polymer resin, it is preferable to use a T-die.
  • FIG. 1 is a flow chart showing a method for manufacturing a solar cell module back protective sheet according to the present invention
  • Figure 2 is described as a cross-sectional view showing the configuration of the solar cell module back protective sheet according to the present invention.
  • the method for manufacturing a solar cell module back protective sheet comprises the steps of unwinding the fluorine-based film wound on the roller (S10); Forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the unwinded fluorine-based film (S20); Stacking a base film on one side of the first adhesive resin layer (S30); Forming a secondary adhesive resin layer by melt-extruding a polymer resin on the base film laminated on the fluorine-based film (S40); And laminating a fluorine-based film on one side on which the secondary adhesive resin layer is formed (S50).
  • the step of unwinding the fluorine-based film wound on the roller according to the present invention (S10) is to unwind the fluorine-based film from the roller in which the fluorine-based film constituting the back protective sheet for the solar cell module is wound in advance.
  • the fluorine-based film is a film made of a polymer resin containing a fluorine component, providing durability and insulation to the back protective sheet for solar cell modules.
  • Representative materials that can be used as the fluorine-based film is selected from among polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), THV resin, tetrafluoroethylene (TFE), polychlorotrifluorofluoro (PCTFE), ethylene tetrafluoroethylene (ETFE), or a mixture thereof. desirable.
  • PVF polyvinyl fluoride
  • PVDF polyvinylidene fluoride
  • THV resin tetrafluoroethylene
  • PCTFE polychlorotrifluorofluoro
  • ETFE ethylene tetrafluoroethylene
  • the step (S20) of forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the undisclosed fluorine-based film according to the present invention is to form an adhesive layer for laminating and laminating the base film on the undisclosed fluorine-based film.
  • the adhesive resin layer specifically the primary adhesive resin layer is for firmly attaching the fluorine-based film and the base film, and is not particularly limited as long as the layer is made of a polymer resin having adhesive strength.
  • the polymer resin may be a hot melting resin.
  • hot melting resin polyurethane-based hot melting, acrylic-based hot melting, PVB-based hot melting resin, etc.
  • hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use
  • the base film is laminated to the fluorine-based film by the primary adhesive resin layer without a separate drying process.
  • the hot melt resin forming the primary adhesive resin layer is preferably extruded through a T-die.
  • the melt extrusion may be performed by extruding the polymer resin by melting the polymer resin at a temperature of 280 to 330 ° C.
  • the thickness of the first adhesive resin layer formed on one side of the fluorine-based film is not particularly limited, but may be 10 to 25 ⁇ m.
  • the step (S30) of laminating the base film on one side on which the first adhesive resin layer according to the present invention is formed is to laminate the base film on the fluorine-based film constituting the back protective sheet for the solar cell module.
  • the base film is to provide insulation and strength to the back protective sheet for the solar cell module, if the film for this purpose is not particularly limited, preferably PET (Polyethylene terephthalate), low oligomer (low oligomer) PET , PI (Polyimide), PEN (Polyethylene naphthalene) or a mixture thereof is preferably selected.
  • PET Polyethylene terephthalate
  • low oligomer low oligomer
  • PET Polyimide
  • PEN Polyethylene naphthalene
  • the base film and the fluorine-based film are preferably laminated using a pressure roller.
  • the hot melt resin is melt-extruded without a separate drying process and provided to the base film to laminate the fluorine-based film and the base film. To be laminated.
  • the base film is previously wound on a separate roller, and then the primary adhesive resin layer is formed on the fluorine-based film by melt extrusion and unwinded to the primary adhesive resin layer formed on the fluorine-based film.
  • the step (S40) of forming a secondary adhesive resin layer by melt-extruding a polymer resin on a base film laminated on the fluorine-based film according to the present invention is one side of the base film laminated on the fluorine-based film, preferably the back of the base film It is for forming the adhesive layer for laminating
  • the adhesive resin layer specifically, the secondary adhesive resin layer is for firmly attaching the base film and the fluorine-based film, and is not particularly limited as long as the layer is made of a polymer resin having adhesive strength.
  • the polymer resin may be a hot melting resin.
  • hot melting resin polyurethane-based hot melting, acrylic-based hot melting, PVB-based hot melting resin, etc.
  • hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use
  • the fluorine-based film is laminated to the base film by the secondary adhesive resin layer without a separate drying process.
  • the hot melt resin forming the secondary adhesive resin layer is preferably extruded through a T-die.
  • the melt extrusion may be performed by extruding the polymer resin by melting the polymer resin at a temperature of 280 to 330 ° C.
  • the thickness of the secondary adhesive resin layer formed on one side of the base film is not particularly limited, but may be 10 to 25 ⁇ m.
  • Laminating a fluorine-based film on one side of the secondary adhesive resin layer is formed according to the present invention (S50) is a fluorine-based film constituting the solar cell module back protective sheet to manufacture a back protective sheet for the solar cell module
  • Another fluorine-based film is laminated on one side of the laminated base film and laminated.
  • the fluorine-based film and the base film is preferably laminated using a pressure roller.
  • the hot melt resin is melt-extruded without a separate drying process and provided to the base film to laminate the base film and the fluorine film. To be laminated.
  • the fluorine-based film is previously wound on a separate roller, and then unwound with a secondary adhesive resin layer formed on the base film at the same time a secondary adhesive resin layer is formed on the base film by melt extrusion.
  • the fluorine-based film is a film made of a polymer resin containing a fluorine component, and provides durability and insulation to a back protective sheet for a solar cell module.
  • Representative materials that can be used as the fluorine-based film is selected from among polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), THV resin, tetrafluoroethylene (TFE), polychlorotrifluorofluoro (PCTFE), ethylene tetrafluoroethylene (ETFE), or a mixture thereof. desirable.
  • PVF polyvinyl fluoride
  • PVDF polyvinylidene fluoride
  • THV resin tetrafluoroethylene
  • PCTFE polychlorotrifluorofluoro
  • ETFE ethylene tetrafluoroethylene

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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)
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  • Photovoltaic Devices (AREA)
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Abstract

The present invention relates to a manufacturing method for a rear protection sheet for a solar cell module, comprising the following steps: unwinding a fluorine-based film that has been wound on a roller; forming a first adhesive resin layer on one side of said unwound fluorine film by melt extruding a polymer resin; stacking a base film on said one side on which said first adhesive resin layer has been formed; forming a second adhesive resin layer on said base film, which has been stacked on said fluorine-based film, by melt extruding a polymer resin; and stacking another fluorine-based film on said one side on which said second adhesive resin has been formed.

Description

태양전지모듈용 이면 보호시트의 제조방법Manufacturing method of back protective sheet for solar cell module
본 발명은 태양전지모듈용 이면 보호시트의 제조방법에 관한 것으로서, 보다 상세하게는 접착수지층을 이용하여 권출되는 불소계 필름상에 기재 필름 및 불소계 필름을 적층하여 태양전지모듈용 이면 보호시트를 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing a back protective sheet for a solar cell module, and more particularly, to manufacture a back protective sheet for a solar cell module by laminating a base film and a fluorine based film on a fluorine-based film wound up using an adhesive resin layer. It is about how to.
최근 들어 태양전지모듈은 광전효과를 이용하여 빛 에너지를 전기 에너지로 변환시키는 반도체 소자로서, 무공해, 무소음, 무한 공급 에너지라는 장점을 갖춰 각광을 받고 있다.Recently, a solar cell module is a semiconductor device that converts light energy into electrical energy using a photoelectric effect, and has been in the spotlight with the advantages of pollution-free, noise-free, and infinite supply energy.
이와 같은 태양전지모듈은 통상 강화유리, EVA 필름, 태양전지 셀, EVA 필름, 이면 보호시트를 순차적으로 적층시키고, 적층된 모듈을 진공상태에서 고온 압축 라미네이팅 처리하여 제조한다.Such a solar cell module is usually manufactured by sequentially stacking tempered glass, EVA film, solar cell, EVA film, the back protective sheet, the laminated module is subjected to a high temperature compression laminating process in a vacuum.
특히, 태양전지모듈은 태양광을 잘 받을 수 있도록 옥외에 설치되므로, 눈, 비 등의 외부 환경에 견딜 수 있도록 그 배면에 백시트로서 태양전지모듈을 보호하기 위한 보호시트가 구비된다. In particular, since the solar cell module is installed outdoors to receive sunlight well, a protective sheet for protecting the solar cell module as a back sheet is provided on the rear surface of the solar cell module to withstand the external environment such as snow and rain.
여기서, 상기 보호시트는 방수, 절연 및 자외선 차단 역할을 제공함과 동시에 태양전지모듈의 수명을 연장시키기 위해 높은 온도 및 습도에서도 잘 견딜 수 있는 내구성을 가진 재료로 구성된다.Here, the protective sheet is made of a durable material that can withstand high temperatures and humidity in order to provide a waterproof, insulating and UV protection role and at the same time extend the life of the solar cell module.
전술한 태양전지모듈용 이면 보호시트는 대표적으로 PVF/PET/PVF가 적층된 구조를 갖고, 일부 제품의 경우 PVF 등의 불소계 필름/PET/EVA, PE 등의 수지가 필름 형태로 적층된 구조로 제조되기도 한다.The solar cell module back protective sheet has a structure in which PVF / PET / PVF is laminated, and in some products, a structure in which resins such as fluorine-based films such as PVF / PET / EVA and PE are laminated in a film form. It is also manufactured.
이와 같은 태양전지모듈용 이면 보호시트는 통상 PET 필름에 PVF 필름을 1차 라미네이션하여 적층한 후 1차 경화하고, PVF 필름이 적층된 PET 필름에 다른 PVF 필름이나 EVA, PE 등의 수지 필름을 2차 라미네이션하여 적층한 후 2차 경화시키는 드라이 라미네이션 방식으로 제조된다.Such a solar cell module back protective sheet is usually laminated by first laminating a PVF film on a PET film, and then cured first, and another PVF film or a resin film such as EVA or PE is laminated on the PET film on which the PVF film is laminated. It is manufactured by dry lamination method of secondary lamination by lamination by secondary lamination.
본 발명은 불소계 필름의 일측면에 용융압출을 통해 접착수지층을 형성한 후 기재 필름을 적층하고, 적층된 기재 필름의 일측면에 다시 용융압출을 통해 접착수지층을 형성한 후 불소계 필름을 적층함으로써, 연속공정에 의해 태양전지 모듈용 이면 보호필름을 제조하는 방법을 제공한다.The present invention forms an adhesive resin layer on one side of the fluorine-based film through melt extrusion, and then laminates the base film, and then forms an adhesive resin layer on the one side of the laminated base film by melt-extrusion, and then laminates the fluorine-based film. Thereby, the method of manufacturing the back surface protective film for solar cell modules by a continuous process is provided.
본 발명은 롤러에 권취된 불소계 필름을 권출시키는 단계;The present invention comprises the steps of winding up a fluorine-based film wound on a roller;
상기 권출되는 불소계 필름의 일측면에 고분자 수지를 용융압출하여 1차 접착수지층을 형성시키는 단계;Forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the unwound fluorine-based film;
상기 1차 접착수지층이 형성된 일측면에 기재 필름을 적층하는 단계;Stacking a base film on one side of the first adhesive resin layer;
상기 불소계 필름에 적층된 기재 필름 상에 고분자 수지를 용융압출하여 2차 접착수지층을 형성하는 단계; 및Forming a secondary adhesive resin layer by melt-extruding a polymer resin on the base film laminated on the fluorine-based film; And
상기 2차 접착수지층이 형성된 일측면에 불소계 필름을 적층하는 단계를 포함하는 태양전지모듈용 이면보호시트의 제조방법을 제공한다.It provides a method for manufacturing a back protective sheet for a solar cell module comprising the step of laminating a fluorine-based film on one side of the secondary adhesive resin layer is formed.
본 발명은 불소계 필름의 일측면에 용융압출을 통해 접착수지층을 형성한 후 기재 필름을 적층하고, 적층된 기재 필름의 일측면에 다시 용융압출을 통해 접착수지층을 형성한 후 불소계 필름을 적층함으로써, 연속공정에 의해 태양전지 모듈용 이면 보호필름을을 신속하고 저렴하게 양산할 수 있도록 한다.The present invention forms an adhesive resin layer on one side of the fluorine-based film through melt extrusion, and then laminates the base film, and then forms an adhesive resin layer on the one side of the laminated base film by melt-extrusion, and then laminates the fluorine-based film. By doing so, it is possible to mass-produce the back surface protective film for a solar cell module by a continuous process quickly and inexpensively.
도 1은 본 발명에 따른 태양전지모듈용 이면 보호시트의 제조방법을 나타내는 흐름도,1 is a flow chart showing a method of manufacturing a back protective sheet for a solar cell module according to the present invention;
도 2는 본 발명에 따른 태양전지모듈용 이면 보호시트의 구성을 나타내는 단면도이다.2 is a cross-sectional view showing the configuration of a back protective sheet for a solar cell module according to the present invention.
본 발명은 롤러에 권취된 불소계 필름을 권출시키는 단계;The present invention Unwinding the fluorine-based film wound on the roller;
상기 권출되는 불소계 필름의 일측면에 고분자 수지를 용융압출하여 1차 접착수지층을 형성시키는 단계;Forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the unwound fluorine-based film;
상기 1차 접착수지층이 형성된 일측면에 기재 필름을 적층하는 단계;Stacking a base film on one side of the first adhesive resin layer;
상기 불소계 필름에 적층된 기재 필름 상에 고분자 수지를 용융압출하여 2차 접착수지층을 형성하는 단계; 및Forming a secondary adhesive resin layer by melt-extruding a polymer resin on the base film laminated on the fluorine-based film; And
상기 2차 접착수지층이 형성된 일측면에 불소계 필름을 적층하는 단계를 포함하는 태양전지모듈용 이면보호시트의 제조방법을 제공한다.If the solar cell module, including the step of laminating the fluorine-based film on a surface formed with the second adhesive resin layer can provide a method of manufacturing a protection sheet.
본 발명에 따른 태양전지모듈용 이면 보호시트는 태양전지모듈을 보호하기 위한 시트로서, 상기 태양전지모듈의 이면에 부착되어 적용되므로 백시트(back sheet)로 지칭될 수도 있다.The rear protective sheet for a solar cell module according to the present invention is a sheet for protecting the solar cell module, and may be referred to as a back sheet because it is attached and applied to the rear surface of the solar cell module.
상기 태양전지모듈용 이면 보호시트는 불소계 필름상에 고분자 수지를 용융압출하여 접착수지층을 형성한 후 기재필름을 적층, 바람직하게는 합지하여 적층하고, 상기 불소계 필름이 적층된 기재 필름의 배면에 다시 고분자 수지를 용융압출하여 접착수지층을 형성한 뒤 불소계 필름을 적층하도록 구성된다.The solar cell module back protective sheet is formed by melting and extruding a polymer resin on a fluorine-based film to form an adhesive resin layer, and then laminating, preferably laminating, and laminating the base film on the back surface of the base film on which the fluorine-based film is laminated. The polymer resin is melt-extruded to form an adhesive resin layer and then laminated with a fluorine-based film.
상기 기재 필름은 PET, 저 함량 올리고머(low oligomer) PET, PI, PEN 또는 이들의 혼합물을 사용할 수 있고, 상기 불소계 필름은 PVF, PVDF, THV 수지, TFE, PCTFE, ETFE 또는 이들의 혼합물을 사용하는 것이 좋다.The base film may use PET, low oligomer PET, PI, PEN or a mixture thereof, and the fluorine-based film may use PVF, PVDF, THV resin, TFE, PCTFE, ETFE or a mixture thereof. It is good.
또한, 상기 접착수지층, 바람직하게는 1차 및 2차 접착수지층을 형성하는 고분자 수지는 핫 멜팅(hot melting) 수지, 예를 들면 PVB, PE, EVA 또는 이들의 혼합물로 이루어진 핫 멜팅 수지를 사용하는 것이 좋다.In addition, the polymer resin for forming the adhesive resin layer, preferably the primary and secondary adhesive resin layer is a hot melting resin, for example, hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use.
이때, 상기 핫 멜팅 수지가 용융압출되어 접착수지층을 형성시키는 경우, 별도의 건조공정 없이 기재 필름이 접착수지층에 의해 불소계 필름과 합지되어 적층된다.In this case, when the hot melt resin is melt-extruded to form an adhesive resin layer, the base film is laminated with the fluorine-based film by the adhesive resin layer without a separate drying process.
본 발명에 따른 용융압출은 압출되는 고분자 수지를 280 내지 330℃의 온도로 용융시켜 압출하는 것이 바람직하며, 상기 고분자 수지를 압출하는 것은 티다이를 이용하는 것이 좋다.In the melt extrusion according to the present invention, it is preferable to melt and extrude the extruded polymer resin at a temperature of 280 to 330 ° C., and to extrude the polymer resin, it is preferable to use a T-die.
이하, 첨부된 도면을 참조하여 본 발명에 대하여 상세히 설명하면 다음과 같다. 그러나 하기의 설명은 오로지 본 발명을 구체적으로 설명하기 위한 것으로 하기 설명에 의해 본 발명의 범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the following description is only for describing the present invention in detail and does not limit the scope of the present invention by the following description.
도 1은 본 발명에 따른 태양전지모듈용 이면 보호시트의 제조방법을 나타내는 흐름도, 도 2는 본 발명에 따른 태양전지모듈용 이면 보호시트의 구성을 나타내는 단면도로서 함께 설명한다.1 is a flow chart showing a method for manufacturing a solar cell module back protective sheet according to the present invention, Figure 2 is described as a cross-sectional view showing the configuration of the solar cell module back protective sheet according to the present invention.
도 1 및 도 2에 도시된 바와 같이, 본 발명에 따른 태양전지모듈용 이면 보호시트의 제조방법은 롤러에 권취된 불소계 필름을 권출시키는 단계(S10); 상기 권출되는 불소계 필름의 일측면에 고분자 수지를 용융압출하여 1차 접착수지층을 형성시키는 단계(S20); 상기 1차 접착수지층이 형성된 일측면에 기재 필름을 적층하는 단계(S30); 상기 불소계 필름에 적층된 기재 필름 상에 고분자 수지를 용융압출하여 2차 접착수지층을 형성하는 단계(S40); 및 상기 2차 접착수지층이 형성된 일측면에 불소계 필름을 적층하는 단계(S50)를 포함한다.As shown in Figure 1 and 2, the method for manufacturing a solar cell module back protective sheet according to the present invention comprises the steps of unwinding the fluorine-based film wound on the roller (S10); Forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the unwinded fluorine-based film (S20); Stacking a base film on one side of the first adhesive resin layer (S30); Forming a secondary adhesive resin layer by melt-extruding a polymer resin on the base film laminated on the fluorine-based film (S40); And laminating a fluorine-based film on one side on which the secondary adhesive resin layer is formed (S50).
본 발명에 따른 롤러에 권취된 불소계 필름을 권출시키는 단계(S10)는 태양전지모듈용 이면 보호시트를 구성하는 불소계 필름이 미리 권취된 롤러로부터 불소계 필름을 권출시키는 것이다.The step of unwinding the fluorine-based film wound on the roller according to the present invention (S10) is to unwind the fluorine-based film from the roller in which the fluorine-based film constituting the back protective sheet for the solar cell module is wound in advance.
여기서, 상기 불소계 필름은 불소 성분을 포함하는 고분자 수지로 이루어진 필름으로서, 태양전지모듈용 이면 보호시트에 내구성 및 절연성을 제공한다.Here, the fluorine-based film is a film made of a polymer resin containing a fluorine component, providing durability and insulation to the back protective sheet for solar cell modules.
상기 불소계 필름으로 사용 가능한 대표적인 물질로는 PVF(Polyvinyl fluoride), PVDF(Polyvinylidene fluoride), THV 수지, TFE(Tetrafluoroethylene), PCTFE(Polychlorotri-fluoroethylene), ETFE(Ethylene tetrafluoroethylene) 또는 이들의 혼합물 중에서 선택되는 것이 바람직하다.Representative materials that can be used as the fluorine-based film is selected from among polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), THV resin, tetrafluoroethylene (TFE), polychlorotrifluorofluoro (PCTFE), ethylene tetrafluoroethylene (ETFE), or a mixture thereof. desirable.
본 발명에 따른 권출되는 불소계 필름의 일측면에 고분자 수지를 용융압출하여 1차 접착수지층을 형성시키는 단계(S20)는 권출되는 불소계 필름에 기재 필름을 합지시켜 적층하기 위한 접착층을 형성하기 위한 것이다.The step (S20) of forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the undisclosed fluorine-based film according to the present invention is to form an adhesive layer for laminating and laminating the base film on the undisclosed fluorine-based film. .
이때, 상기 접착수지층, 특정적으로 1차 접착수지층은 불소계 필름과 기재 필름을 견고하게 부착시키기 위한 것으로서, 접착력을 갖는 고분자 수지로 이루어진 층이라면 특별히 한정되지 않는다.In this case, the adhesive resin layer, specifically the primary adhesive resin layer is for firmly attaching the fluorine-based film and the base film, and is not particularly limited as long as the layer is made of a polymer resin having adhesive strength.
상기 고분자 수지는 핫 멜팅(hot melting) 수지를 사용하는 것이 좋다.The polymer resin may be a hot melting resin.
이때, 상기 핫 멜팅 수지로는 폴리우레탄계 핫 멜팅, 아크릴계 핫 멜팅, PVB계 핫 멜팅 수지 등이 사용 가능하나, 백시트의 사용 여건을 고려할 때 PVB, PE, EVA 또는 이들의 혼합물로 이루어진 핫 멜팅 수지를 사용하는 것이 좋다. In this case, as the hot melting resin, polyurethane-based hot melting, acrylic-based hot melting, PVB-based hot melting resin, etc. may be used, but considering the use conditions of the back sheet, hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use
또한, 상기 핫 멜팅 수지가 용융압출되어 접착수지층, 바람직하게는 1차 접착수지층을 형성시키는 경우, 별도의 건조공정 없이 기재 필름이 1차 접착수지층에 의해 불소계 필름에 합지되어 적층된다.In addition, when the hot melt resin is melt-extruded to form an adhesive resin layer, preferably a primary adhesive resin layer, the base film is laminated to the fluorine-based film by the primary adhesive resin layer without a separate drying process.
또한, 상기 1차 접착수지층을 형성하는 핫 멜팅 수지는 티다이를 통해 압출되는 것이 좋다.In addition, the hot melt resin forming the primary adhesive resin layer is preferably extruded through a T-die.
여기서, 상기 용융압출은 고분자 수지를 280 내지 330℃의 온도로 용융시켜 압출하는 것이 바람직하다.Here, the melt extrusion may be performed by extruding the polymer resin by melting the polymer resin at a temperature of 280 to 330 ° C.
상기 불소계 필름의 일측면에 형성된 1차 접착수지층의 두께는 특별히 한정되는 것은 아니지만, 10 내지 25㎛일 수 있다.The thickness of the first adhesive resin layer formed on one side of the fluorine-based film is not particularly limited, but may be 10 to 25 μm.
본 발명에 따른 1차 접착수지층이 형성된 일측면에 기재 필름을 적층하는 단계(S30)는 태양전지모듈용 이면 보호시트를 구성하는 불소계 필름에 기재 필름을 합지시켜 적층하는 것이다.The step (S30) of laminating the base film on one side on which the first adhesive resin layer according to the present invention is formed is to laminate the base film on the fluorine-based film constituting the back protective sheet for the solar cell module.
여기서, 상기 기재 필름은 태양전지모듈용 이면 보호시트에 절연성 및 강도를 제공하는 것으로서, 이러한 목적을 위한 필름이라면 특별히 한정되지 않지만, 바람직하게는 PET(Polyethylene terephthalate), 저 함량 올리고머(low oligomer) PET, PI(Polyimide), PEN(Polyethylene naphthalene) 또는 이들의 혼합물 중에서 선택되는 것이 바람직하다.Here, the base film is to provide insulation and strength to the back protective sheet for the solar cell module, if the film for this purpose is not particularly limited, preferably PET (Polyethylene terephthalate), low oligomer (low oligomer) PET , PI (Polyimide), PEN (Polyethylene naphthalene) or a mixture thereof is preferably selected.
상기 기재 필름과 불소계 필름은 가압롤러를 이용하여 합지되는 것이 바람직하다.The base film and the fluorine-based film are preferably laminated using a pressure roller.
특히, 상기 불소계 필름에 형성되는 1차 접착수지층이 핫 멜팅 수지가 용융압출되어 형성되는 경우, 별도의 건조공정 없이 핫 멜팅 수지가 용융압출되며 기재 필름에 제공되어 상기 불소계 필름과 기재 필름을 합지시켜 적층한다.In particular, when the primary adhesive resin layer formed on the fluorine-based film is formed by melt-extrusion of the hot melt resin, the hot melt resin is melt-extruded without a separate drying process and provided to the base film to laminate the fluorine-based film and the base film. To be laminated.
이때, 상기 기재 필름은 별도의 롤러에 미리 권취된 후 용융압출에 의해 불소계 필름에 1차 접착수지층이 형성됨과 동시에 불소계 필름에 형성된 1차 접착수지층으로 권출되는 것이 바람직하다.In this case, it is preferable that the base film is previously wound on a separate roller, and then the primary adhesive resin layer is formed on the fluorine-based film by melt extrusion and unwinded to the primary adhesive resin layer formed on the fluorine-based film.
본 발명에 따른 불소계 필름에 적층된 기재 필름 상에 고분자 수지를 용융압출하여 2차 접착수지층을 형성하는 단계(S40)는 불소계 필름에 적층된 기재 필름의 일측면, 바람직하게는 기재 필름의 배면에 불소계 필름을 합지시켜 적층하기 위한 접착층을 형성하기 위한 것이다.The step (S40) of forming a secondary adhesive resin layer by melt-extruding a polymer resin on a base film laminated on the fluorine-based film according to the present invention is one side of the base film laminated on the fluorine-based film, preferably the back of the base film It is for forming the adhesive layer for laminating | stacking and laminating | stacking a fluorine-type film on the surface.
이때, 상기 접착수지층, 특정적으로 2차 접착수지층은 기재 필름과 불소계 필름을 견고하게 부착시키기 위한 것으로서, 접착력을 갖는 고분자 수지로 이루어진 층이라면 특별히 한정되지 않는다.In this case, the adhesive resin layer, specifically, the secondary adhesive resin layer is for firmly attaching the base film and the fluorine-based film, and is not particularly limited as long as the layer is made of a polymer resin having adhesive strength.
상기 고분자 수지는 핫 멜팅(hot melting) 수지를 사용하는 것이 좋다.The polymer resin may be a hot melting resin.
이때, 상기 핫 멜팅 수지로는 폴리우레탄계 핫 멜팅, 아크릴계 핫 멜팅, PVB계 핫 멜팅 수지 등이 사용 가능하나, 백시트의 사용 여건을 고려할 때 PVB, PE, EVA 또는 이들의 혼합물로 이루어진 핫 멜팅 수지를 사용하는 것이 좋다. In this case, as the hot melting resin, polyurethane-based hot melting, acrylic-based hot melting, PVB-based hot melting resin, etc. may be used, but considering the use conditions of the back sheet, hot melting resin consisting of PVB, PE, EVA or a mixture thereof It is good to use
또한, 상기 핫 멜팅 수지가 용융압출되어 접착수지층, 바람직하게는 2차 접착수지층을 형성시키는 경우, 별도의 건조공정 없이 불소계 필름이 2차 접착수지층에 의해 기재 필름에 합지되어 적층된다.In addition, when the hot melt resin is melt-extruded to form an adhesive resin layer, preferably a secondary adhesive resin layer, the fluorine-based film is laminated to the base film by the secondary adhesive resin layer without a separate drying process.
또한, 상기 2차 접착수지층을 형성하는 핫 멜팅 수지는 티다이를 통해 압출되는 것이 좋다.In addition, the hot melt resin forming the secondary adhesive resin layer is preferably extruded through a T-die.
여기서, 상기 용융압출은 고분자 수지를 280 내지 330℃의 온도로 용융시켜 압출하는 것이 바람직하다.Here, the melt extrusion may be performed by extruding the polymer resin by melting the polymer resin at a temperature of 280 to 330 ° C.
상기 기재 필름의 일측면에 형성된 2차 접착수지층의 두께는 특별히 한정되는 것은 아니지만, 10 내지 25㎛일 수 있다.The thickness of the secondary adhesive resin layer formed on one side of the base film is not particularly limited, but may be 10 to 25 μm.
본 발명에 따른 2차 접착수지층이 형성된 일측면에 불소계 필름을 적층하는 단계(S50)는 최종적인 태양전지모듈용 이면 보호시트를 제조하기 위해 태양전지모듈용 이면 보호시트를 구성하는 불소계 필름이 적층된 기재 필름의 일측면에 다른 불소계 필름을 합지시켜 적층하는 것이다.Laminating a fluorine-based film on one side of the secondary adhesive resin layer is formed according to the present invention (S50) is a fluorine-based film constituting the solar cell module back protective sheet to manufacture a back protective sheet for the solar cell module Another fluorine-based film is laminated on one side of the laminated base film and laminated.
이때, 상기 불소계 필름과 기재 필름은 가압롤러를 이용하여 합지되는 것이 바람직하다.At this time, the fluorine-based film and the base film is preferably laminated using a pressure roller.
특히, 상기 기재 필름에 형성되는 2차 접착수지층이 핫 멜팅 수지가 용융압출되어 형성되는 경우, 별도의 건조공정 없이 핫 멜팅 수지가 용융압출되며 기재 필름에 제공되어 상기 기재 필름과 불소계 필름을 합지시켜 적층한다.In particular, when the secondary adhesive resin layer formed on the base film is formed by melt-extrusion of the hot melt resin, the hot melt resin is melt-extruded without a separate drying process and provided to the base film to laminate the base film and the fluorine film. To be laminated.
이때, 상기 불소계 필름은 별도의 롤러에 미리 권취된 후 용융압출에 의해 기재 필름에 2차 접착수지층이 형성됨과 동시에 기재 필름에 형성된 2차 접착수지층으로 권출되는 것이 바람직하다.In this case, it is preferable that the fluorine-based film is previously wound on a separate roller, and then unwound with a secondary adhesive resin layer formed on the base film at the same time a secondary adhesive resin layer is formed on the base film by melt extrusion.
상기 불소계 필름은 불소 성분을 포함하는 고분자 수지로 이루어진 필름으로서, 태양전지모듈용 이면 보호시트에 내구성 및 절연성을 제공한다.The fluorine-based film is a film made of a polymer resin containing a fluorine component, and provides durability and insulation to a back protective sheet for a solar cell module.
상기 불소계 필름으로 사용 가능한 대표적인 물질로는 PVF(Polyvinyl fluoride), PVDF(Polyvinylidene fluoride), THV 수지, TFE(Tetrafluoroethylene), PCTFE(Polychlorotri-fluoroethylene), ETFE(Ethylene tetrafluoroethylene) 또는 이들의 혼합물 중에서 선택되는 것이 바람직하다.Representative materials that can be used as the fluorine-based film is selected from among polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), THV resin, tetrafluoroethylene (TFE), polychlorotrifluorofluoro (PCTFE), ethylene tetrafluoroethylene (ETFE), or a mixture thereof. desirable.
이상에서 설명한 바와 같이, 본 발명이 속하는 기술 분야의 당업자는 본 발명이 그 기술적 사상이나 필수적 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예는 모두 예시적인 것이며 한정적인 것이 아닌 것으로서 이해해야만 한다. 본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위의 의미 및 범위 그리고 그 등가개념으로부터 도출되는 모두 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features. Therefore, it should be understood that the embodiments described above are all illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention all changes or modifications derived from the meaning and scope of the claims to be described later rather than the detailed description and equivalent concepts thereof.

Claims (7)

  1. 롤러에 권취된 불소계 필름을 권출시키는 단계;Unwinding the fluorine-based film wound on the roller;
    상기 권출되는 불소계 필름의 일측면에 고분자 수지를 용융압출하여 1차 접착수지층을 형성시키는 단계;Forming a primary adhesive resin layer by melt-extruding a polymer resin on one side of the unwound fluorine-based film;
    상기 1차 접착수지층이 형성된 일측면에 기재 필름을 적층하는 단계;Stacking a base film on one side of the first adhesive resin layer;
    상기 불소계 필름에 적층된 기재 필름 상에 고분자 수지를 용융압출하여 2차 접착수지층을 형성하는 단계; 및Forming a secondary adhesive resin layer by melt-extruding a polymer resin on the base film laminated on the fluorine-based film; And
    상기 2차 접착수지층이 형성된 일측면에 불소계 필름을 적층하는 단계를 포함하는 태양전지모듈용 이면보호시트의 제조방법.Method of manufacturing a back protective sheet for a solar cell module comprising the step of laminating a fluorine-based film on one side of the secondary adhesive resin layer is formed.
  2. 제1항에 있어서,The method of claim 1,
    상기 접착수지층을 형성하는 고분자 수지는 핫 멜팅 수지인 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.The polymer resin forming the adhesive resin layer is a manufacturing method of the solar cell module back protective sheet, characterized in that the hot melting resin.
  3. 제2항에 있어서,The method of claim 2,
    핫 멜팅 수지는 PVB, PE, EVA 또는 이들의 혼합물을 포함하는 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.Hot-melting resin manufacturing method of the back protective sheet for solar cell module comprising PVB, PE, EVA or a mixture thereof.
  4. 제1항에 있어서,The method of claim 1,
    상기 불소계 필름은 PVF, PVDF, THV 수지, TFE, PCTEF, ETFE 또는 이들의 혼합물인 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.The fluorine-based film is PVF, PVDF, THV resin, TFE, PCTEF, ETFE or a method for producing a back protective sheet for a solar cell module, characterized in that a mixture thereof.
  5. 제1항에 있어서,The method of claim 1,
    상기 기재 필름은 PET, 저 함량 올리고머 PET, PI, PEN 또는 이들의 혼합물인 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.The base film is a PET, low content oligomer PET, PI, PEN or a method of manufacturing a back protective sheet for a solar cell module, characterized in that a mixture thereof.
  6. 제1항에 있어서,The method of claim 1,
    상기 용융압출은 티다이를 이용하는 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.The melt extrusion is a manufacturing method of the back protective sheet for solar cell module, characterized in that using a T-die.
  7. 제1항에 있어서,The method of claim 1,
    상기 용융압출은 고분자 수지를 280 내지 330℃의 온도로 용융시켜 압출하는 것을 특징으로 하는 태양전지모듈용 이면 보호시트의 제조방법.The melt extrusion is a method of manufacturing a back protective sheet for a solar cell module, characterized in that the polymer resin is melted and extruded at a temperature of 280 to 330 ℃.
PCT/KR2010/008754 2010-03-02 2010-12-08 Manufacturing method for rear protection sheet for solar cell module WO2011108805A2 (en)

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