Solar Cell Encapsulation Film segmentation by type distinguishes four material families—ethylene‑vinyl acetate (EVA), thermoplastic polyurethane (TPU), polyethylene terephthalate (PET), and polyimide (PI)—each delivering distinct barrier and mechanical attributes that allocate market share. EVA remains the dominant type, accounting for roughly 55 % of volume, because its cross‑linked structure offers reliable moisture resistance, UV stability, and cost‑effective processing on large‑area lines. Within EVA, cross‑linked grades dominate, while fluorinated variants capture niche high‑temperature segments. TPU contributes about 20 % of the market; its elastomeric nature provides superior flexibility and impact resistance, making it preferable for BIPV modules where curvature and durability are critical. PET films, representing approximately 15 % of shipments, deliver high tensile strength and dimensional stability, supporting thin‑glass utility‑scale panels that prioritize weight reduction. Polyimide, though only 5 % of total volume, is essential for high‑temperature and space‑grade applications due to its exceptional thermal endurance and low out‑gassing. The relative weight of each type reflects the trade‑off between performance specifications and cost, reinforcing the market taxonomy that aligns material selection with the functional demands of each application segment.
