Lamination film can be:
- Glossy, perfectly conveys the image such as color and brightness, and saturation. However, because of the glare of light that appear on glossy surface, badly perceived small details, for example, informational text.
- Matt, where glare excluded. Besides their surface can easily be written on. The usual eraser can be easily erase such inscriptions. More respectable looks matte film coating and is usually required to be laminated expensive promotional products and business cards.
- Textured, which are used to decorate the surface of the image. For example, "Champagne", "canvas", "Len", "fabric", "Sand".
Three types of polymers are the basis of modern production of films for lamination:
- Polyester (polyethylene terephthalate - PET)
- Polypropylene (PP, BOPP)
- Polyvinyl chloride (PVC or PVC).
Any polyester-based film is a multilayer and comprising usually three layers:
- a layer of polyester (PET), which serves as the basis for the film and gives elasticity and rigidity;
- a layer of polyethylene (PE), which serves as a link, as well as laminating peculiar "cushion";
- layer polymer "glue", i.e. EVA - ethylene vinyl acetate, which is low-melting (95-120 ° C) polymer with adhesive properties.
Selection of films for laminating
Laminating technology seems very simple at first glance. Its basis is the principle of different temperatures. Diffusion of adhesive paper in texture occurs when the temperature exceeds the melting point of the adhesive layer, and is lower than the melting temperature of the base material. Pressure shafts and accompanies the process of thermal diffusion and this contributes to literally "growing" of the film in the paper, but in this case refers to a quality film.
Pressure must be limited to only a cold laminating process due to the fact that heating is limited to the temperature sensitivity of the material, which is laminated.
The basis for the construction of modern films for lamination mainly serves polietilentereftalat, popularly known as PET or polyester, and polypropylene (PP) and polyvinyl chloride (PVC). Latin abbreviations PVC, PP and PET are also in vogue. The properties of these polymers and their combinations with the materials of the adhesive layer of the film defines a property value and application of various types of films. Their know-how has each manufacturer of such products and technology, "highlights" of course, kept secret. Due to the fact that in the present conditions prevail the high price of entering the market and fierce competition, this is caused by a limited number of producers of the film. Famous brand films in the Russian market are the GBC, Attalus, Neschen, Opus, GMP, D & K, Pavo, Rexel, Seal and slightly Morane. Once we entered the market relatively recently the film Argo, SSI, Mag-Data and Royal Sovereign.