Room-temperature mechanical properties are comparable to those of polyester film. To minimize transmission of moisture vapors, fluoropolymers are the best choice. This family of materials has a general paraffinic structure with some or all of the hydrogen atoms replaced by fluorine. This film can be used for interbonding or cladding in PEEK structural components. Thermoplastic and thermoset acrylics are noted for exceptional clarity and weatherability, and also offer favorable stiffness, density, chemical resistance, and toughness.
Bond strength depends on surface preparation and adhesive type.
Plastic film can be manufactured from almost any resin, but not every resin produces an engineering film. Manufacturers can choose from, and end users can specify, a range of process treatments that significantly enhance heat stability, mechanical properties, electrical characteristics, barrier properties, and bondability. Coatings are typically applied by emulsion, solvent, and dry methods. Some processors have developed proprietary antistatic coatings that are cured by electron-beam radiation. Metal coatings produce conductive capabilities and also enhance barrier properties.