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Some Basic Knowledge and Functions of PVB Film
PVB film, also known as polyvinyl butyral film, is a type of plastic material that is commonly used in laminated glass products, including building-integrated photovoltaics (BIPV) modules.
The main function of PVB film is to provide a protective barrier between the layers of glass in a laminated product, helping to improve the durability and safety of the glass. In BIPV modules, the PVB film helps to protect the photovoltaic cells from physical damage and Environmental factors, such as moisture and UV light.
PVB film is also used in automotive and architectural applications, where it helps to improve the safety and security of the glass. In addition, PVB film can be used to improve the thermal performance of a building, as it can help to reduce heat loss by reducing the transmission of heat through the glass.
PVB film is a versatile and valuable material that provides a number of benefits for building construction and design, including improved durability and safety, enhanced thermal performance, and greater energy efficiency.
The Difference Between PVB Film and Other Intermediate Films
PVB (Polyvinyl Butyral) film is just one type of intermediate film that is used in laminated glass products. Other types of intermediate films include:
EVA (Ethylene Vinyl Acetate) film: EVA is a thermoplastic material that is used as an intermediate film in laminated glass products. It provides a protective barrier between the layers of glass, similar to PVB film, but it also has excellent thermal stability, making it ideal for use in applications that are exposed to high temperatures.
SGP (SentryGlas Plus) film: SGP is a type of interlayer film that is made from a patented ionoplast polymer. It is known for its high strength and excellent impact resistance, making it ideal for use in applications where safety and security are a concern.
TPU (Thermoplastic Polyurethane) film: TPU is a flexible, transparent film that is often used in laminated glass products, particularly in architectural applications. It provides a high level of protection against environmental factors, including moisture and UV light, and it also offers excellent thermal and acoustic insulation.
Each type of intermediate film has its own specific properties and benefits, and the choice of film will depend on the specific requirements of the application.
In comparison to other intermediate films, PVB film is known for its excellent optical clarity, high toughness, and good adhesion properties. However, it is less flexible and more brittle than some other types of interlayer films, making it less suitable for applications that require a high degree of flexibility.