Functional films are used in protective coatings to improve their physical properties.

Functional films are polypropylene (PP) films that are applied to certain substrates in order to increase their physical properties, such as thermal conductivity or electrical conductivity. These films are generally used for a variety of applications, including coating fabrics and other substances. The physical and chemical properties of a film can be changed by applying specific chemical catalysts, or applying mechanical stresses to the film. In addition, certain types of plastics, which are hydrophobic, are able to trap small quantities of moisture, thus preventing their growth on the films.

Functional films are used in a variety of different applications to add a protective coating to a surface, increase the film's electrical or physical properties, or to make a barrier. In addition to protecting products from damaging agents, these films also provide protection from ultraviolet light.

All of these films have a wide range of possible applications, including protecting products, increasing material density, improving the electrical and physical properties of a material, or making a barrier. As stated above, certain types of plastics are hydrophobic, which means that they prevent moisture from collecting on their surface, and therefore require special coatings in order to prevent damage during use and storage. Other types of films that would benefit from coatings would include: barrier films, adhesive tapes, heat-shrinkage, laminate, vinyl, reflective, thermoset, tabbing, and thermoforming.

Among the most important benefits of using polypropylene (PP) films for packaging is that they provide excellent barrier protection against UV light, air and moisture. As a result, there are a number of materials used for PP films that do not contain significant amounts of antioxidants. Examples include carbonless dyes that prevent oxidation, non-porous composites, and thermoset polymers that prevent surface oxidation. The variety of potential applications of these films makes them a very attractive option, and one that manufacturers should strongly consider in the packaging process. When purchasing functional films for packaging, it's important that you ensure that the manufacturer you choose offers the specific type of protective film that you need, as well as the level of antioxidant activity that you're looking for.