Polyethylene (PE) film exhibits notable performance characteristics when exposed to extreme temperatures, making it a versatile material in various applications. At elevated temperatures, PE film tends to soften, resulting in a loss of structural integrity. Typically, its melting point ranges from 120°C to 130°C, which can limit its use in high-heat environments. However, it retains flexibility, allowing it to withstand thermal stress to a certain extent.
Conversely, at low temperatures, PE film remains durable and maintains its mechanical properties, with minimal brittleness. This quality is crucial for applications in colder climates, where maintaining flexibility and resistance to cracking is vital. PE film suppliers often emphasize the importance of selecting the right grade of polyethylene for specific temperature conditions to ensure optimal performance.
Moreover, the thermal expansion of PE film must be considered; it can expand and contract with temperature fluctuations, potentially leading to stress in the film when used in rigid applications. To mitigate these issues, various additives and formulations can be employed to enhance the film’s thermal resistance. Ultimately, understanding these performance characteristics allows manufacturers and end-users to make informed decisions when utilizing PE film in extreme temperature environments.