Composite-layer Film Backsheet Market by Material Type (Composite Polymer Blends, Fluoropolymer Films, Polyester (PET)), Product Type (Anti Soiling Coated Backsheet, Fire Resistant Backsheet, High Temperature Resistant Backsheet), Construction, Layer Count, Thickness Range, Technology, Performance Feature, Application, End Use Sector, Installation Type, Certification And Standards, Sales Channel, Price Band, Customer Type - Global Forecast 2026-2032