{"product_id":"pv-backsheet-for-solar-modules-tpt-kpk-pvdf","title":"PV Backsheet for Solar Modules — TPT, KPK, PVDF","description":"\u003cblockquote\u003e\n\u003cp\u003ePV backsheet for solar modules in TPT, KPK, PVDF and transparent grades: UV-resistant, electrically insulating and moisture-blocking rear protection.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cimg alt=\"PV Backsheet for Solar Modules — TPT, KPK, PVDF\" src=\"https:\/\/cdn.ooitech.com\/runtime\/image\/w800_h600_fitblur_v2_1774518934395196.webp\"\u003e\u003c\/p\u003e\n\u003ch4\u003ePV Backsheet for Solar Modules — TPT, KPK, PVDF\u003c\/h4\u003e\n\u003cp\u003ePV backsheet for solar modules in TPT, KPK, PVDF and transparent grades: UV-resistant, electrically insulating and moisture-blocking rear protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eQuick answer:\u003c\/strong\u003e A PV backsheet is the multi-layer polymer film forming the rear protective layer of a solar module. It is the module's armour: it blocks moisture, withstands UV for 25 years, provides electrical insulation and mechanically protects the cells behind the encapsulant. Standard constructions are TPT (Tedlar-PET-Tedlar), KPK and PVDF, each trading cost against UV and hydrolysis resistance. A three-layer PET-based structure is typical, with the outer layer carrying the UV load. Backsheets must hold dielectric strength above 1000 V system voltage and survive damp-heat testing at 85°C and 85% relative humidity. White backsheets reflect light back into the module and raise output slightly; black and transparent variants are chosen for aesthetics or bifacial modules. The inner layer must also bond reliably to EVA during lamination, since a weak bond shows up later as delamination and moisture ingress rather than as an immediate failure. Ooitech supplies backsheets for lines from 5 MW to 1 GW.\u003c\/p\u003e\n\u003cp\u003ePV Module Manufacturing · by Jerry, Ooitech\u003c\/p\u003e\n\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\n\u003cp\u003eA photovoltaic (PV) backsheet is the sophisticated multi-layer film that forms the outermost protective layer on the rear side of solar modules. This critical component acts as the module's \"armor,\" appearing in white, black, or transparent variants to meet different application requirements. As a key barrier system, the backsheet safeguards internal components from environmental ingress while ensuring electrical safety throughout the module's 25+ year operational lifespan.\u003c\/p\u003e\n\u003cp\u003eDuring the lamination process, the backsheet is permanently bonded with EVA\/POE \u003ca href=\"https:\/\/www.ooitech.com\/EVA-POE-EPE-Encapsulant-Film-for-Solar-Panel-Manufacturing-Complete-Technical-Guide.html\"\u003eencapsulant\u003c\/a\u003es, solar cells, and glass to create an integrated weatherproof unit. This sophisticated composite material represents decades of polymer engineering advancement, combining multiple specialized layers to deliver comprehensive protection and performance optimization for modern solar energy systems.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eStandard Backsheet Properties\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eTPT Backsheet\u003c\/th\u003e\n\u003cth\u003eKPK Backsheet\u003c\/th\u003e\n\u003cth\u003eCoated Backsheet\u003c\/th\u003e\n\u003cth\u003eTransparent Backsheet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructure\u003c\/td\u003e\n\u003ctd\u003ePVF\/PET\/PVF\u003c\/td\u003e\n\u003ctd\u003ePVDF\/PET\/PVDF\u003c\/td\u003e\n\u003ctd\u003eCoating\/PET\/Coating\u003c\/td\u003e\n\u003ctd\u003eTransparent Polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e300-350 μm\u003c\/td\u003e\n\u003ctd\u003e300-350 μm\u003c\/td\u003e\n\u003ctd\u003e250-300 μm\u003c\/td\u003e\n\u003ctd\u003e300-400 μm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1000V DC\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1000V DC\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1000V DC\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1000V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Vapor Transmission Rate\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2 g\/m²\/day\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2 g\/m²\/day\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3 g\/m²\/day\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2 g\/m²\/day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;3000 hours\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;3000 hours\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;2500 hours\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;3000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;150 MPa\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;150 MPa\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;140 MPa\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;130 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity (White)\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;70%\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;70%\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;65%\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Transmission\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Life\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;25 years\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;25 years\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;25 years\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;25 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eLayer Configuration\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eLayer Position\u003c\/th\u003e\n\u003cth\u003eMaterial Options\u003c\/th\u003e\n\u003cth\u003eThickness Range\u003c\/th\u003e\n\u003cth\u003ePrimary Function\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Layer\u003c\/td\u003e\n\u003ctd\u003ePVF, PVDF, Coating\u003c\/td\u003e\n\u003ctd\u003e25-50 μm\u003c\/td\u003e\n\u003ctd\u003eWeather resistance, UV protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Layer\u003c\/td\u003e\n\u003ctd\u003ePET\u003c\/td\u003e\n\u003ctd\u003e250-275 μm\u003c\/td\u003e\n\u003ctd\u003eMechanical strength, electrical insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Layer\u003c\/td\u003e\n\u003ctd\u003ePVF, PVDF, Modified PET\u003c\/td\u003e\n\u003ctd\u003e25-50 μm\u003c\/td\u003e\n\u003ctd\u003eEVA\/POE adhesion, lamination compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTechnical Advantages\u003c\/h2\u003e\n\u003ch3\u003eSuperior Electrical Protection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Voltage Insulation\u003c\/strong\u003e: Provides robust electrical insulation for systems operating up to 1500V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePersonnel Safety\u003c\/strong\u003e: Prevents current leakage to module frames and mounting systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Reliability\u003c\/strong\u003e: Maintains dielectric strength throughout 25+ year lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePartial Discharge Resistance\u003c\/strong\u003e: Engineered to prevent electrical breakdown under high voltage stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironmental Barrier Performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low WVTR\u003c\/strong\u003e: Water vapor transmission rates below 2 g\/m²\/day prevent internal corrosion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Resistance\u003c\/strong\u003e: Resists degradation from ammonia, salt mist, and industrial pollutants\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV Stability\u003c\/strong\u003e: Withstands 3000+ hours of accelerated UV testing without degradation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Cycling\u003c\/strong\u003e: Maintains integrity through -40°C to +85°C temperature extremes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Durability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact Resistance\u003c\/strong\u003e: Protects against hail, debris, and handling damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScratch Resistance\u003c\/strong\u003e: Hard-coated surfaces resist abrasion during installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional Stability\u003c\/strong\u003e: Minimal shrinkage or expansion under thermal stress\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTear Strength\u003c\/strong\u003e: High tear resistance prevents propagation of mechanical damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThermal Management Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Reduction\u003c\/strong\u003e: White backsheets reflect \u0026gt;70% of incident light, lowering module temperature by 2-3°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output Enhancement\u003c\/strong\u003e: Cooler operating temperatures improve module efficiency by 1-2%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBifacial Compatibility\u003c\/strong\u003e: Transparent variants enable rear-side power generation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot Spot Prevention\u003c\/strong\u003e: Uniform thermal properties prevent localized overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterial Innovation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluoropolymer Technology\u003c\/strong\u003e: TPT and KPK variants offer proven 30+ year field performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-Friendly Options\u003c\/strong\u003e: Fluorine-free coated backsheets reduce environmental impact\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Adhesion\u003c\/strong\u003e: Optimized inner layers ensure permanent EVA\/POE bonding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Customization\u003c\/strong\u003e: Available in white, black, and transparent for different applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Applications\u003c\/h2\u003e\n\u003ch3\u003eUtility-Scale Solar Farms\u003c\/h3\u003e\n\u003cp\u003eLarge-scale solar installations require backsheets with exceptional long-term reliability and weather resistance. TPT and KPK fluoropolymer backsheets are preferred for their proven 30+ year field performance, ensuring minimal degradation in harsh outdoor environments. These installations benefit from white backsheets' thermal management properties, improving overall energy yield across thousands of modules.\u003c\/p\u003e\n\u003ch3\u003eResidential Rooftop Systems\u003c\/h3\u003e\n\u003cp\u003eResidential applications demand both performance and aesthetics. Black backsheets are increasingly popular for all-black module designs that blend seamlessly with modern architecture. These systems require backsheets with superior electrical insulation for safety, as modules are installed in close proximity to living spaces. Coated backsheets offer an cost-effective solution while maintaining the necessary 25-year warranty requirements.\u003c\/p\u003e\n\u003ch3\u003eBifacial Solar Installations\u003c\/h3\u003e\n\u003cp\u003eTransparent backsheets enable revolutionary bifacial module technology, allowing power generation from both sides of the solar cell. These specialized backsheets are essential for ground-mounted systems with high albedo surfaces, floating solar farms, and vertical installation configurations. The transparent material allows 90%+ light transmission while maintaining all protective functions, increasing total energy yield by 10-30% depending on installation conditions.\u003c\/p\u003e\n\u003ch3\u003eBuilding-Integrated Photovoltaics (BIPV)\u003c\/h3\u003e\n\u003cp\u003eBIPV applications integrate solar modules directly into building materials such as facades, canopies, and skylights. These installations require backsheets with exceptional aesthetic quality, custom colors, and architectural compatibility. Transparent backsheets enable see-through solar windows, while colored variants match specific building design requirements.\u003c\/p\u003e\n\u003ch3\u003eExtreme Environment Deployments\u003c\/h3\u003e\n\u003cp\u003eDesert installations, coastal regions, and high-altitude locations present unique challenges requiring specialized backsheet solutions. Desert environments demand superior UV resistance and sand abrasion protection. Coastal installations require enhanced salt mist corrosion resistance. High-altitude deployments need backsheets capable of withstanding intense UV radiation and extreme temperature cycling.\u003c\/p\u003e\n\u003ch2\u003eContact for Purchase\u003c\/h2\u003e\n\u003ch3\u003eGet Premium Backsheet Solutions from Ooitech\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOoitech\u003c\/strong\u003e specializes in providing complete solar panel production line equipment and materials, including high-quality backsheets for all module types. As your trusted partner in solar manufacturing, we offer comprehensive solutions from 5MW to 1GW production capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Backsheet Services Include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Supply\u003c\/strong\u003e: Premium TPT, KPK, coated, and transparent backsheets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Consultation\u003c\/strong\u003e: Expert guidance on backsheet selection for your specific application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduction Line Integration\u003c\/strong\u003e: Complete \u003ca href=\"https:\/\/www.ooitech.com\/solar-panel-laminator-the-heart-of-pv-module-encapsulation.html\"\u003elaminator\u003c\/a\u003e and testing equipment for backsheet processing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assurance\u003c\/strong\u003e: EL testers and IV testers to verify backsheet performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraining Programs\u003c\/strong\u003e: Comprehensive training on backsheet handling and lamination processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose Ooitech?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Expertise\u003c\/strong\u003e: Specialized in G1, M6, M10, M12, MBB, PERC, \u003ca href=\"https:\/\/www.ooitech.com\/what-is-topcon-solar-cell-a-complete-guide-to-tunnel-oxide-passivated-contact-technology.html\"\u003eTOPCon\u003c\/a\u003e, IBC, ABC, HPBC module production\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Solutions\u003c\/strong\u003e: From EVA\/TPT cutting machines to laminators and testing equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Support\u003c\/strong\u003e: Worldwide delivery, installation, and after-sales service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Resources\u003c\/strong\u003e: Access our comprehensive catalog and video tutorials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmail\u003c\/strong\u003e: \u003ca href=\"mailto:info@ooitech.com\"\u003einfo@ooitech.com\u003c\/a\u003e \u003cstrong\u003ePhone\u003c\/strong\u003e: +86 18571646990 \u003cstrong\u003eWhatsApp\u003c\/strong\u003e: +86 15961592660 \u003cstrong\u003eHead Office\u003c\/strong\u003e: Wuhan Yangtze River Center, Wuhan, China \u003cstrong\u003eWebsite\u003c\/strong\u003e: \u003ca href=\"http:\/\/www.ooitech.com\"\u003ewww.ooitech.com\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResources:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYouTube Channel\u003c\/strong\u003e: \u003ca href=\"http:\/\/www.youtube.com\/ooitech\"\u003ewww.youtube.com\/ooitech\u003c\/a\u003e \u003cstrong\u003eMBB Production Line Video\u003c\/strong\u003e: \u003ca href=\"https:\/\/www.youtube.com\/watch?v=uRS9sn94sIQ\"\u003ehttps:\/\/www.youtube.com\/watch?v=uRS9sn94sIQ\u003c\/a\u003e \u003cstrong\u003eCompany Catalog\u003c\/strong\u003e: \u003ca href=\"https:\/\/drive.google.com\/file\/d\/1EWA3TV6hJb_cAUH6w0UENpRglAgq_Kzv\/view?usp=sharing\"\u003eDownload Here\u003c\/a\u003e \u003cstrong\u003eCompany Profile\u003c\/strong\u003e: \u003ca href=\"https:\/\/drive.google.com\/file\/d\/1yg9NLXzLOmPWriYScQZeM6ZfSZ8gcQ88\/view?usp=sharing\"\u003eDownload Here\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSubscribe to our YouTube channel\u003c\/strong\u003e for the latest solar manufacturing insights and production line demonstrations. Contact us today to discuss your backsheet requirements and discover how Ooitech can enhance your solar module production capabilities!\u003c\/p\u003e","brand":"Ooitech","offers":[{"title":"Default Title","offer_id":67691755700323,"sku":null,"price":99999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/1427\/4659\/files\/w800_h600_fitblur_v2_1774518934395196.webp?v=1791858254","url":"https:\/\/ooitechchina.myshopify.com\/en-global\/products\/pv-backsheet-for-solar-modules-tpt-kpk-pvdf","provider":"Solar Panel Making Machine","version":"1.0","type":"link"}