Film and foil lamination
Film and foil lamination in practice
Film lamination is used for the purposes of creative design and practical function. There are many types of films, and this variety makes it possible to achieve a multitude of special creative effects and use different ways to enhance the design of book covers, exclusive brochures, maps, cards, menus, posters, etc. The film also protects the surface from scratches, stains and other damage.
Film suppliers produce standard interchangeable products as well as their own speciality niche products. When combined with paperboard, film lamination offers a very wide range of possibilities. The long-proven glue lamination technique widens the field of paperboard applications into areas where more complicated and expensive constructions would otherwise be required.
The film lamination operation
Lamination is a technique in which a film is glue laminated to the paperboard surface to achieve aesthetic effects or surface protection. The film is reel fed and the adhesive is applied to the film (except when using thermal film). The paperboard web is fed into the press and, when passing through a calender, it is pressed against the plastic film. Since glue lamination involves adding and removing moisture, this operation must be carried out very carefully so that the process results in strong, flat products.
Films and adhesives
A wide selection of films can be used in combination with paperboard. The most common way to create a glossy surface and protection for the print is PP (polypropylene). It provides a durable material with special visual and tactile properties. The type of film may be limited by the chosen adhesive system. In the case of water-based and solvent-based adhesives, the film is dried to increase the tack of the adhesive.
The advantages and disadvantages of different types of adhesives are summarised in the following table.