The processing of gas film materials is a key process for constructing lightweight building structures through precision technology, with high-strength PVDF film materials as the core. The core steps include: ① material selection and pretreatment, selecting PVDF membrane materials that are corrosion-resistant and UV resistant, and conducting tensile strength testing to ensure that the performance meets the standards; ② Automated cutting, precise cutting based on CAD drawings, polishing edges to ensure smooth seams; ③ High frequency heat sealing, precisely controlled by temperature (120-150 ℃) and pressure (0.4-0.6MPa), seamlessly bonds the membrane to form an airtight structure; ④ Quality inspection, with a focus on verifying coating uniformity, joint tensile strength (≥ 30MPa), and weather resistance. During processing, wrinkles and thermal damage should be avoided, and intelligent winding technology should be used to prevent deformation. The finished product is widely used in large-span spaces such as grain warehouses and sports venues, combining the advantages of lightweight (1/10 of the weight of traditional building materials), high strength and durability (with a lifespan of over 25 years), and fast construction, highlighting the modern engineering characteristics of high efficiency and environmental protection.