Laminating is often used to protect important documents from external influences. It's a process in which the paper is joined with a thin layer of film to seal it off and make it waterproof and dirt-repellent. There are different methods of laminating, and different types of laminating film accordingly.
Hot laminating works with foil that is coated with an adhesive which reacts when exposed to heat. The adhesive is liquefied and bonds with the paper. In cold laminating, the film is coated with an adhesive that reacts without heat and bonds with the paper at room temperature. A distinction is also made between pouch lamination and roll lamination. With pouch laminating, the film is shaped into a pocket that is closed on one side. As a result, the document only needs to be inserted and cannot move out of position easily. In roll laminating, which also works somewhat differently from pocket lamination, the paper is not pushed into a pocket, but the film is rolled onto a roll and pulled over the paper.
Laminating film in pocket form is available in the usual DIN standard formats, but also in special formats for various ID card formats. There are bags for hot laminating as well as for cold laminating. In the case of cold laminating, it can also be carried out without a special device, as it is not necessary to heat the laminator; however, you should always use a device for formats larger than DIN A4, otherwise the result will usually not be good.
The laminating film, which has been rolled onto a roll, is not available in prefabricated formats, but only in specific widths. A DIN A3 roll, for example, has a width of 305 mm, but the length can be 30 m or 150 m. Thus, many documents can be laminated with one roll, and the ends are simply cut off. When it comes to laminating film rolls, there are those for cold and those for hot laminating.
There are different designs and quality levels for both pocket and roll laminating films. The thickness of the films varies between 80µm and 250µm, based on one half of the film. The versions can be glossy and clear, but also matt, coloured or self-adhesive. In addition, there are laminating films that are specially produced for photo printing; these protect photos not only from water and dirt, but also from UV radiation which prevents the images from fading. The numerous different shapes and designs mean that you can always find the right laminating film for your needs, whether at home, in the office or for professional use.