FERON Solar backsheets & frontsheets. New thinking needs new thinkers

Transcription

1 FERON Solar backsheets & frontsheets New thinking needs new thinkers

2 FERON plant II Düren, Germany 2

3 Doing better what s already good Anything but superficial K nowledgeable, innovative and diligent customers relying on FERON as their supplier of a finished material know that we are really meticulous where quality and optimum processability are concerned. A nd it is in particular the company s proximity to its customers that has made FERON the market and tech nology leaders in selected segments of paper, plastic films, metal foils and metal strips. We meet our customers day-to-day challenges with all our enthusiasm and know-how finding the optimum final product is the result of systematic further development and a joint effort. By developing tailor-made solutions for efficient production processes, we want to help our customers to meet their own quality requirements, and we thus contribute to their success. A tradition of creative solutions E ver since FERON was established as a manufacturer of paper bags in 1934, we have continuously developed our technologies, our products and thus our range of business activities. Today, we specialise in sophisticated coating and laminating processes for paper, plastic films as well as metal foils and strips. As we move forward, we will maintain our enthusiasm for technical challenges and develop innovative ideas in order to provide creative solutions to our customers. FERON s current business units are: FERON FERON Solar Solar FERON FERON Print Print FERON FERON Decor Decor FERON FERON Protect Protect Frontsheets Backsheets Printable coated films Printed laminated films (paper, PET, PP, etc.) Aluminium surfaces Aluminium edge foils Stainless steel foils Copper foils Texturing release foils Magnet board foils Furniture films Packaging materials Pharmaceutical products Construction/ insulation materials Technical applications 3

4 Meeting the future with experience Less is simply more R educed material use, minimized error sources, reduced production expenses with equal performance levels As market and technological leaders for high quality coated and laminated plastic and metal films as well as for paper in some segments, we are well acquainted with these types of challenges. We have garnered experience from other product areas and applied it to photovoltaic systems, to optimize existing product technologies and set new standards for innovative solutions. Hightlights from FERON Solar: backsheets fluorine-free neox CPC and neox CPE frontsheets fluorine-based tranlux EC and ECC Mission protective shield: FERON backsheets T he main purpose of a backsheet is to protect all the components of a solar module for its entire lifespan and to guarantee energy flow without losses. FERON backsheets optimally protect the active elements from environmental influences, particularly against moisture, UV radiation, the effects of chemicals, and mechanical damage. Of course, the opposite is also true, as the environment must also be protected against the active electric elements of the solar module. The crystal-clear alternative: FERON frontsheets W e have been producing ETFE-based frontsheets for crystalline and thin-layer modules for more than 20 years. Compared to the glass normally used, they are not only lighter but also easier to process. A high level of light transmission also gives the active solar layers a higher level of efficiency. The highlytransparent FERON frontsheets also do not show any alternation by weathering. They show long-term resistance to influences such as UV radiation and moisture. 4

5 Ideas that stick HelioX PV coating technologies HelioX PV inside coatings cell side T he cell side technology provides perfect UV protection for the PET film of a FERON backsheet. It is an excellent adhesion promoter to encapsulants (e.g. EVA) with very high bonding strength, for which the use of hot melt adhesive films (e.g. PE/EVA layers) as an integrated component of the backsheets is omitted. In this way, even with vacuum lamination, the thickness of the backsheet is guaranteed to be even a decisive advantage which makes a noticeable difference in the safety and quality of the final product! HelioX PV outside coatings air side T he outside coatings, especially designed for the air side of PV modules, have outstanding weathering resistance for the protection of the inside of the PET film. Extensive tests have also shown that HelioX PV outside coatings protects the PET film equally well against aggressive chemical substances such as ammonia, as well as mechanical damage, such as scratching. Perfect pre-requisites for an improvement in quality and the safety of your solar module. HelioX PV adhesives interlayer T he adhesive technology used in FERON adhesives provides excellent bonding of all layers in multilayer PV backsheets. It withstands the high strain requirements and creates long-term and environmentally stable bonds with high temperature resistance. FERON adhesives already comply with the new PV standards for frontsheets and backsheets as well as the ageing requirements before and after the damp-heat test. 5

6 Applied technology Product name Product group inside coatings inside coatings translux fluorine-based inside coatings inside coatings outside coatings inside coatings outside coatings neox fluorine-free outside coatings FERON Solar backsheets & frontsheets Product portfolio HelioX PV sheets frontsheets backsheets Product group translux fluorine-based neox fluorine-free Product name Applied technology EC + ECC inside coatings E*PE adhesive barrier -2 inside coatings CAPC inside coatings outside coatings adhesive CPC inside coatings outside coatings CPE outside coatings adhesive PPE trans adhesive adhesive adhesive adhesive PPE trans EC + ECC EPE barrier -2 CAPC CPC CPE frontsheets backsheets 6

7 no hot melt films (e.g., PE/EVA) as an integrated component of the backsheet fluorine-free outstanding bonding to encapsulant best UV protection for the PET film in PV market more than 25,000 hrs Xenon test optimised water vapour transmission rate protection against mechanical damage effective chemical resistance (e.g. against ammonia) outstanding adhesion with junction box adhesives testregarding to ISO (still ongoing) perfect weatherbility best UV protection for the PET film in PV market more than 25,000 hrs Xenon high temperature resistance transparent exceptional interlayer bonding high ageing resistance Innovative technologies HelioX PV HelioX PV inside coatings cell side best UV protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO fluorine-free outstanding bonding to encapsulant no hot melt films (e.g. PE/EVA) as an integrated component of the backsheet optional individual color selection HelioX PV outside coatings air side best UV protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO perfect weatherbility / UV protection fluorine-free outstanding adhesion with junction box adhesives effective chemical resistance (e.g. against ammonia) optimised water vapour transmission rate protection against mechanical damage optional individual color selection HelioX PV adhesive interlayer exceptional interlayer bonding high ageing resistance high temperature resistance transparent optional individual color selection optional individual color selection to ISO (still ongoing) regarding The properties of all HelioX PV backsheets: PV cell HelioX air side PV weathering and HelioX adhesive temperature HelioX PV side resistant very good bonding (outward) with junction box adhesives very good mechanical properties good scratch resistance outstanding insulating properties optimal water vapour transmission rate excellent bonding (inward) to encapsulants (e.g. PE/EVA) outstanding thermal dimension stability high chemical resistance (e.g. against ammonia) very good processing options recyclable 7

8 The mono film solution - a new dimension HelioX PV backsheets neox CPC H eliox PV backsheets neox CPC are new monofilms which offer equivalent resistance standards as well as other substantial benefits compared to standard, established backsheets. During production, two of FERON s coating systems are applied to the high-performance PET film for electric insulation. Waiving the use of Tedlar or other fluorine-based films makes the often problematic lamination process unnecessary. By eliminating unstable hot melt adhesive films such as EVA as primers neox CPC offers the best possible security for solar modules (isolation). Due to the high melting point of the backsheet (> 250 C), a change in thickness during lamination process is not possible. Due to their one-layer construction, CPC backsheets no longer have any physical weak spots as can occur with lamination bonds. The color can be selected individually and recycling is safe and poses no problems. The properties of neox CPC backsheets: best UV/Xenon protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO excellent weathering resistance and bonding to junction box adhesives by HelioX PV outside coatings mono film (PET) backsheet solution fluorine-free and without instable hot-melt films no film laminate! no interlayer delamination! up to 5,000 h Damp-heat stability excellent UV protection and bonding to encapsulants by HelioX PV inside coatings environmentally friendly (fluorine-free) and recyclable no release of hazardous hydrogen fluoride during thermal disposal and in case of fire optional individual color selection fire code hardly inflammable UNI 8457 and UNI 9147, similar to DIN and

9 Twice as good by the sheet: the double-film solution HelioX PV backsheets neox CPE F or the benefit of our customer s products and out of an environmental consciousness, fluorine-free and fluorine-based three layer backsheets can be omitted in the processing of backsheets. The use of backsheets with E-layers becomes safer now with this double film solution. The HelioX PV backsheets neox CPE by FERON are innovative film laminates made of one high-performance PET film (over 3,000 h DHT) and one encapsulant promoter which are laminated together and coated with HelioX PV outside coatings on the air side for a maximum increase in durability. The colour of the backsheets can be selected individually and reprocessing poses no problems. Due to its 2-film construction, the backsheet has one less physical weak spot then the traditional TPT or other backsheets with E-layer (primer) as PPE or TPE, which makes this backsheet much more reliable. The properties of CPE backsheets: best UV/Xenon protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO excellent UV protection and bonding to encapsulants by encapsulant promoter two film backsheet solution fluorine-free up to 3,000 h Damp-heat resistance excellent weathering resistance and bonding to junction box adhesives by HelioX PV outside coatings environmentally friendly (fluorine-free) and recyclable no release of hazardous hydrogen fluoride during thermal disposal and in case of fire optional individual color selection 9

10 Way ahead of the game for 20 years HelioX PV frontsheets translux EC + ECC O ur highly transparent HelioX PV translux EC + ECC frontsheets are sturdy and have excellent weathering- and UV-resistance. Also against external influences such as hail, fire, or chemicals, translux EC + ECC frontsheets provide outstanding protection. In addition, they are very tear- and impact-resistant and are given a practical easy-clean-effect. It is not surprising that translux EC products have been used successfully in the PV market for more than 20 years! The properties of ECC frontsheets: mono film (ETFE or ECTFE) frontsheet solution more than 20 years proven in solar modules extraordinary transparency excellent adhesion promoter to encapsulants by HelioX PV inside coatings weathering and ageing resistant hardly inflammable easy-clean-effect 40 % lighter than glass 10

11 Always on your side: speciality backsheets and frontsheets HelioX PV specialities S pecial applications have a demand more for special solutions. For new technologies, but also for already known as the thin-film technology or BIPV FERON is developing special customized products. So there are frontsheets in our portfolio with excellent transparency or with very high water vapor barrier. Also FERON has developed transparent backsheets like neox PPE trans that can be used especially in BIPV. The structure of this product consists of two layers of film highly transparent PET and an encapsulant promoter, which are laminated with our highly transparent adhesive together. For applications, in which water vapor barrier is necessary, FERON has developed the backsheet neox CAPC, constisting of a 25 µm thick laminated aluminum foil, which perfectly prevents water vapor from entering from the air side to the cells. Other products are for the future market solar under development. Customized products are available on request. 11

12 Better than the norm F ERON HelioX PV sheets meet the IEC test norm safety requirements /-2 and , and the quality standard in accordance with IEC The sheets themselves and solar modules with our sheets have been certified by a variety of institutes. This also applies to the company of FERON, which is certified in accordance with DIN EN ISO norm 9001:2008. Climatic tests T o test the durability of the films under extreme climatic conditions, a damp-heat test, lasting 4,500 hours at 85 C and 85 % humidity (IEC 61215, procedure 10.13) was conducted. The corresponding test modules made of glass, encapsulant and HelioX PV sheets showed no visible or functional signs of adverse effects. More details about the test series and certifications can be found in the technical data sheets. Further information about safety and environmental compatibility can be found in our safety information. Even the more intensive 48 hour pressure cooker test at 121 C and 1.21 bar with 100 % humidity caused no visible or technical signs of impairment. Xenon tests For the weathering test, the HelioX PV sheets were subject to more than 25,000 hours of simulated weathering with xenon light radiation. The samples were also subjected to a color and gloss assessment as well as an adhesion test. No visible signs of change occurred. 12

13 Physical monitoring T he mechanical stress to the HelioX PV sheets is very high both during manufacture of solar modules and in operation. Tensile strength and tear resistance as well as elongation at break and the adhesion to encapsulant must be guaranteed to meet the future requirements to backsheets and guarantee a long lifespan. They are tested before and after the accelerated ageing process. The shrinkage rate of HelioX PV sheets is 1 to 1.5 % in machine direction after 30 minutes and 1 % in the transverse direction at an assumed 150 C in the lamination process. This minimizes possible problems caused by high tension levels. HelioX PV sheets have excellent bonding properties with junction box adhesives and to encapsulants, as the T-peel test confirms. The level was 2 (junction box adhesive) and 3 (encapsulant) N/mm even after 1,000 hours in the damp-heat test. Corresponding tests have also shown that the scratch and abrasion resistance of our sheets more than meet the high demands in terms of potential external damage during the course of their usage or installation. The effectiveness of the water vapour permeability of our HelioX PV sheets are demonstrated in a water vapour transmission rate test (WVTR) at 38 C and 90 % humidity. Electric testing B y creating an electric arcing to cause a dielectric breakdown on the sheet, the reliability of the quality and material strength of the sheets was verified, with a breakdown voltage of more than 20 kv. HelioX PV sheets are continuously tested by corresponding test institutes for their resistance to partial discharges. With no ill effects, the sheets can withstand a local electrical breakdown with a system voltage of more than 1,000 V. This fulfills the current technical requirements in their entirety and provides a high level of safety in terms of outside shielding and module safety. Chemical resistance B ecause frontsheets and backsheets are exposed to chemical aggressors, e.g. surface cleaning, the HelioX PV sheets are tested for the effects caused by a variety of chemicals. A piece of cloth soaked in isopropanol, MEK or acetone leaves behind no sign of damage to the surface of the sheets, even after repeated rubbing. During the course of assessments conducted at testing institutes, the 28 day test of HelioX PV samples in a defined environment containing ammonia also caused no negative effects, which is why the sheets are also suitable for use in agricultural and sewage treatment-related applications. 13

14 Close cooperation with our partners C ustomer orientation is our daily bread and butter. Partners processing our high-end and functional materials rightly set great store by cooperation. That is why we consider close contact, reliability and aftersales service to be just as important as the careful manufacture of our products. Benefit from FERON s huge experience and reliability because we are: customer-orientated future-orientated environment-conscious quality-conscious innovative specialised reliable when manufacturing and supplying our products careful when selecting our suppliers 14

15 Imprint Publisher Aluminium Féron GmbH & Co. KG Hammerbenden Düren Germany Fon: Fax: Mail: Web: Edition I/16 Concept, Text, Pictures and Editing Aluminium Féron GmbH & Co. KG tsitrone medien GmbH & Co. KG, Cologne Layout tsitrone medien GmbH & Co. KG, Cologne Print

16 ETFE film HelioX PV inside coatings cell side (transparent) encapsulant (not integrated) Way ahead of the game for 20 years HelioX PV frontsheets translux EC O ur highly transparent HelioX PV translux EC frontsheets are sturdy and have excellent weathering- and UV-resistance. Also against external influences such as hail, fire, or chemicals, translux EC frontsheets provide outstanding protection. In addition, they are very tear- and impact-resistant and are given a practical easy-clean-effect. It is not surprising that translux EC products have been used successfully in the PV market for more than 20 years! The properties of EC frontsheets: mono film (ETFE) frontsheet solution more than 20 years proven in solar modules extraordinary transparency excellent adhesion promoter to encapsulants by HelioX PV inside coatings weathering and ageing resistant hardly inflammable easy-clean-effect 40 % lighter than glass

17 HelioX PV frontsheet translux EC 100 Construction Colour Unit Value Standard ETFE µm 100 PV inside Coating g/m² < 0.5 cell side transparent Dimension Total thickness µm 100 ISO 4593:1993 Weight g/m² 175 ISO 536 Ageing resistance Weathering No visible changes concerning colour, yellowness, gloss and adhesion after 12,000 h xenon test. DIN EN ISO Damp-heat test Humidity-freeze test No visible or relevant functional changes (included encapsulant adhesion) after 2,000 h. Test was realized in laminated modules (encapsulant/glass/frontsheet translux EC). No visible or relevant functional changes (included encapsulant adhesion) after 30 cycles. Test was realized in laminated modules (glass/encapsulant/frontsheet translux EC). IEC (85 C, 85 % r.h.) IEC (-40 C 85 C, 85 % r.h.) Technical properties Tensile strength initial 1,000 h damp-heat g/m² 50 (MD) 50 (TD) 45 (MD) 45 (TD) ISO Elongation at break initial 1,000 h damp-heat % 400 (MD) 500 (TD) 195 (MD) 220 (TD) ISO Tension at 10 % elongation N/mm² 20 (MD) 20 (TD) ISO Tear resistance N/mm² 460 (MD) 460 (TD) DIN Encapsulant adhesion N/mm > film expansion internal Heat shrinkage % 1.50 (MD) 1.40 (TD) ASTM D-1204 (150 C, 30 min) Water vapour permeability g/m²d 3.0 ASTM F-1249 (38 C, 90 % r.h.) Radiant panel test - RP 0 ASTM E-162 Fire behaviour (ETFE-film) - B1 flame retardant DIN Breakdown voltage kv > 12 IEC Maximum system voltage VDC > 850 IEC Production figures Width mm upon customer request Roll diameter mm upon customer request Inner reel diameter mm 76 (3"), 152 (6") other diameters upon request

18 ECTFE film HelioX PV inside coatings cell side (transparent) encapsulant (not integrated) Way ahead of the game for 20 years HelioX PV frontsheets translux ECC O ur highly transparent HelioX PV translux ECC frontsheets are sturdy and have excellent weathering- and UV-resistance. Also against external influences such as hail, fire, or chemicals, translux ECC frontsheets provide outstanding protection. In addition, they are very tear- and impact-resistant and are given a practical easy-clean-effect. It is not surprising that translux EC products have been used successfully in the PV market for more than 20 years! The properties of ECC frontsheets: mono film (ECTFE) frontsheet solution more than 20 years proven in solar modules extraordinary transparency excellent adhesion promoter to encapsulants by HelioX PV inside coatings weathering and ageing resistant hardly inflammable easy-clean-effect 40 % lighter than glass

19 HelioX PV frontsheet translux ECC 100 Construction Colour Unit Value Standard ECTFE µm 100 PV inside Coating g/m² < 0.5 cell side transparent Dimension Total thickness µm 100 ISO 4593:1993 Weight g/m² 168 ISO 536 Ageing resistance Weathering No visible changes concerning colour, yellowness, gloss and adhesion after 3,000 h xenon test. DIN EN ISO Damp-heat test Humidity-freeze test No visible or relevant functional changes (included encapsulant adhesion) after 2,000 h. Test was realized in laminated modules (encapsulant/glass/frontsheet translux ECC). No visible or relevant functional changes (included encapsulant adhesion) after 10 cycles. Test was realized in laminated modules (glass/encapsulant/frontsheet translux ECC). IEC (85 C, 85 % r.h.) IEC (-40 C 85 C, 85 % r.h.) Tensile strength initial 1,000 h damp-heat g/m² 60 (MD) 50 (TD) 50 (MD) 50 (TD) ISO Technical properties Elongation at break initial 1,000 h damp-heat % 355 (MD) 365 (TD) 155 (MD) 175 (TD) ISO Tension at 10 % elongation N/mm² 23 (MD) 25 (TD) DIN Tear resistance N/mm 460 (MD) 460 (TD) DIN Encapsulant adhesion N/mm > film expansion internal Heat shrinkage % -3,3 (MD) (-0,6) (TD) ASTM D-1204 (150 C, 30min) Water vapour permeability g/m²d 1.6 ASTM F-1249 (38 C, 90 % r.h.) Radiant panel test - ASTM E-162 Breakdown voltage kv IEC Maximum system voltage VDC IEC Production figures Width mm upon customer request Roll diameter mm upon customer request Inner reel diameter mm 76 (3"), 152 (6") other diameters upon request

20 encapsulant (not integrated) HelioX PV inside coatings cell side PET film different hydrolysis performances HelioX PV outside coatings air side The mono film solution - a new dimension HelioX PV backsheets neox CPC 150 H eliox PV backsheets neox CPC are new monofilms which offer equivalent resistance standards as well as other substantial benefits compared to standard, established backsheets. During production, two of FERON s coating systems are applied to the high-performance PET film for electric insulation. Waiving the use of Tedlar or other fluorine-based films makes the often problematic lamination process unnecessary. By eliminating unstable hot melt adhesive films such as EVA as primers neox CPC offers the best possible security for solar modules (isolation). Due to the high melting point of the backsheet (> 250 C), a change in thickness during lamination process is not possible. Due to their one-layer construction, CPC backsheets no longer have any physical weak spots as can occur with lamination bonds. The color can be selected individually and recycling is safe and poses no problems. The properties of neox CPC backsheets: best UV/Xenon protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO excellent weathering resistance and bonding to junction box adhesive s by HelioX PV outside coatings mono film (PET) backsheet solution fluorine-free and without instable hot-melt films no film laminate! no interlayer delamination! up to 5,000 h Damp-heat stability excellent UV protection and bonding to encapsulants by HelioX PV inside coatings environmentally friendly (fluorine-free) and recyclable no release of hazardous hydrogen fluoride during thermal disposal and in case of fire optional individual color selection fire code hardly inflammable UNI 8457 and UNI 9147, similar to DIN and 66084

21 HelioX PV backsheet neox CPC 150 Construction Unit Value Standard PV outside Coating g/m² 10 air side PET µm 150 PV inside Coating g/m² 10 cell side Colour white other colours available Dimension Total thickness µm 170 ISO 4593:1993 Weight g/m² 245 internal Ageing resistance Weathering No visible changes concerning colour, yellowness, gloss and adhesion after 25,000 h xenon test. DIN EN ISO Damp-heat test Humidity-freeze test Technical properties Tensile strength Elongation at break Encapsulant adhesion Junction box adhesion No visible or relevant functional changes (included encapsulant adhesion) after 3,000 h. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPC). No visible or relevant functional changes (included encapsulant adhesion) after 100 cycles. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPC). initial 1,000 h damp-heat initial 1,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat N/mm² % N/mm N/mm 190 (MD) 190 (TD) 160 (MD) 165 (TD) 160 (MD) 140 (TD) 150 (MD) 130 (TD) no visible change 5.0 (cohesion PV804) 2.5 (cohesion PV804) no visible change IEC (85 C, 85 % r.h.) IEC (-40 C 85 C, 85 % r.h.) ISO ISO T-Peel (IEC ) T-Peel (IEC ) Heat shrinkage % 1.5 (MD) 0.5 (TD) ASTM D-1204 (150 C, 30 min) Water vapour permeability g/m² d 3.9 ASTM F-1249 (38 C, 90 % r.h.) Breakdown voltage kv > 15 IEC Maximum system voltage VDC > 1,000 IEC (in oil) Flame spread index - 15 ASTM E-162 Solar reflectance % > 70 DIN EN 410 ( nm) Production figures Width mm upon customer request Roll diameter mm upon customer request Inner reel diameter mm 76 (3"), 152 (6") other diameters upon request

22 encapsulant (not integrated) HelioX PV inside coatings cell side PET film different hydrolysis performances HelioX PV outside coatings air side The mono film solution - a new dimension HelioX PV backsheets neox CPC 300 H eliox PV backsheets neox CPC are new monofilms which offer equivalent resistance standards as well as other substantial benefits compared to standard, established backsheets. During production, two of FERON s coating systems are applied to the high-performance PET film for electric insulation. Waiving the use of Tedlar or other fluorine-based films makes the often problematic lamination process unnecessary. By eliminating unstable hot melt adhesive films such as EVA as primers neox CPC offers the best possible security for solar modules (isolation). Due to the high melting point of the backsheet (> 250 C), a change in thickness during lamination process is not possible. Due to their one-layer construction, CPC backsheets no longer have any physical weak spots as can occur with lamination bonds. The color can be selected individually and recycling is safe and poses no problems. The properties of neox CPC backsheets: best UV/Xenon protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO excellent weathering resistance and bonding to junction box adhesives by HelioX PV outside coatings mono film (PET) backsheet solution fluorine-free and without instable hot-melt films no film laminate! no interlayer delamination! up to 5,000 h Damp-heat stability excellent UV protection and bonding to encapsulants by HelioX PV inside coatings environmentally friendly (fluorine-free) and recyclable no release of hazardous hydrogen fluoride during thermal disposal and in case of fire optional individual color selection fire code hardly inflammable UNI 8457 and UNI 9147, similar to DIN and 66084

23 HelioX PV backsheet neox CPC 300 Construction Unit Value Standard PV outside Coating g/m² 10 air side PET (bp) µm 300 PV inside Coating g/m² 10 cell side Colour white other colours available Dimension Total thickness µm 320 ISO 4593:1993 Weight g/m² 460 internal Ageing resistance Weathering No visible changes concerning colour, yellowness, gloss and adhesion after 25,000 h xenon test. DIN EN ISO Damp-heat test Humidity-freeze test Technical properties Tensile strength Elongation at break Encapsulant adhesion Junction box adhesion No visible or relevant functional changes (included encapsulant adhesion) after 3,000 h. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPC). No visible or relevant functional changes (included encapsulant adhesion) after 100 cycles. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPC). initial 1,000 h damp-heat initial 1,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat N/mm² % N/mm N/mm 180 (MD) 195 (TD) 165 (MD) 165 (TD) 205 (MD) 180 (TD) 165 (MD) 165 (TD) no visible change 1.0 (cohesion adhesive) 2.5 (cohesion adhesive) no visible change IEC (85 C, 85 % r.h.) IEC (-40 C 85 C, 85 % r.h.) ISO ISO T-Peel (IEC ) T-Peel (IEC ) Heat shrinkage % 1.0 (MD) 0.5 (TD) ASTM D-1204 (150 C, 30 min) Water vapour permeability g/m² d 1.9 ASTM F-1249 (38 C, 90 % r.h.) Breakdown voltage kv > 20 IEC Maximum system voltage VDC > 1,000 (1,500 according new IEC) IEC Flame spread index - 9 ASTM E-162 Solar reflectance % > 70 DIN EN 410 ( nm) Production figures Width mm upon customer request Roll diameter mm upon customer request Inner reel diameter mm 76 (3"), 152 (6") other diameters upon request

24 encapsulant (not integrated) encapsulant promoter cell side HelioX PV adhesive interlayer PET-Film HelioX PV outside coatings air side Twice as good by the sheet: the double-film solution HelioX PV backsheets neox CPE 150 / 50 F or the benefit of our customer s products and out of an environmental consciousness, fluorine-free and fluorine-based three layer backsheets can be omitted in the processing of backsheets. The use of backsheets with E-layers becomes safer now with this double film solution. The HelioX PV backsheets neox CPE by FERON are innovative film laminates made of one high-performance PET film (over 3,000 h DHT) and one encapsulant promoter which are laminated together and coated with HelioX PV outside coating on the air side for a maximum increase in durability. The colour of the backsheets can be selected individually and reprocessing poses no problems. Due to its 2-film construction, the backsheet has one less physical weak spot then the traditional TPT or other backsheets with E-layer (primer) as PPE or TPE, which makes this backsheet much more reliable. The properties of CPE backsheets: best UV/Xenon protection for the PET film in PV market more than 25,000 hrs Xenon test regarding to ISO excellent UV protection and bonding to encapsulants by encapsulant promoter two film backsheet solution fluorine-free up to 3,000 h Damp-heat resistance excellent weathering resistance and bonding to junction box adhesives by HelioX PV outside coatings environmentally friendly (fluorine-free) and recyclable no release of hazardous hydrogen fluoride during thermal disposal and in case of fire optional individual color selection

25 HelioX PV backsheet neox CPE 150/50 Construction PV outside Coating g/m² 10 Unit Value Standard PET µm 150 PV adhesive g/m² 10 Encapsulant promoter µm 50 Colour white other colours available Dimension Total thickness µm 215 ISO 4593:1993 Weight g/m² 285 internal Ageing resistance Total thickness No visible changes concerning colour, yellowness, gloss and adhesion after 15,000 h xenon test. DIN EN ISO Damp-heat test Humidity-freeze test Technical properties Tensile strength Elongation at break Interlayer adhesion (PET Encapsulant promoter) Encapsulant adhesion Junction box adhesion No visible or relevant functional changes (included encapsulant adhesion) after 3,000 h. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPE). No visible or relevant functional changes (included encapsulant adhesion) after 100 cycles. Test was realized in laminated modules (glass/encapsulant/backsheet neox CPE). initial 1,000 h damp-heat initial 1,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat initial 1,000 h damp-heat 2,000 h damp-heat N/mm² % N/mm N/mm N/mm 150 (MD) 140 (TD) 140 (MD) 130 (TD) 170 (MD) 140 (TD) 150 (MD) 120 (TD) no visible change no visible change max. max. no visible change IEC (85 C, 85 % r.h.) IEC (-40 C 85 C, 85 % r.h.) ISO ISO T-Peel (IEC ) T-Peel (IEC ) T-Peel (IEC ) Heat shrinkage % 1.5 (MD) 0.5 (TD) ASTM F-1249 (150 C, 30 min) Water vapour permeability g/m² d 3.1 ASTM D-1204 (38 C, 90 % r.h.) Breakdown voltage kv > 15 IEC Maximum system voltage VDC > 1,000 IEC Flame spread index - 7 ASTM E-162 Solar reflectance % > 70 DIN EN 410 ( nm) Production figures Width mm upon customer request Roll diameter mm upon customer request Roll diameter mm 76 (3"), 152 (6") other diameters upon request

26 Aluminium Féron GmbH & Co. KG Hammerbenden Düren / Germany Fon: Fax: Mail: info@feron.de Web: