Many of the films used for laminating are available in various thicknesses and finishes ranging from clear gloss to delustered. The three main film materials used for lamination processes are polyester, polypropylene, and nylon.
Polyester is the most widely used material for film laminates and can be used for almost any type of application, but it is most often used for book covers, dust jackets, folders, and video slipcovers. Polyester film is heat resistant, foldable, scuff and scratch resistant, flexible, and tough. Polyester film will not become brittle with age because it contains no plasticizers.
Polypropylene is the clearest and brightest type of film and it is used for such applications as posters, labels, marketing, materials, and write on/wipe off calendars. It offers chemical resistance and good optical properties.
Nylon film is another good choice for applications such as book jackets because of its scratch resistance and excellent non-curling properties. Nylon laminate is a very stable material. When it is exposed to heat, it will not stretch, and when it is cooled, it will not shrink.