With extended use and exposure to the elements PVC cards such as ATM cards and identity cards succumb to fading and overall damage. This deterioration makes it quite impossible for us to read the crucial information that they bear in addition to making them rather unpleasant to look at, and which is not good for the image of your organization. Just as in the case of paper documents or certificates, we can also laminate PVC cards. This is achieved by wrapping such a card in PVC overlay film and then subjecting it to sealing effects of the laminator equipment. The effects we achieve include high impact strength, edge tear resistance and reduction in color diffusion. PVC overlays thus simplify the card-making process as we need not incorporate reinforcement ingredients in the manufacture of PVC sheets.
Theoverlay film variety includes coated, uncoated and laser-engraved PVC sheets. With any of these films we should be interested in obtaining a product that exhibits high adhesion properties otherwise we will not achieve adequate sturdy lamination for the PVC cards. The best films among this variety are the types which work well with personalization processes, and which include the digital, thermo transfer and laser techniques. The films should also be able to handle and sustain both conventional and UV inks, and to project the prints in an eye-catchy style. It is also important to note that most PVC overlays come in thicknesses ranging from 60 to 300 micro-millimeters.
Laser overlays have found a major application with regards to driver licenses, national ID cards, employee badges and border crossing cards. This is because they fully support the use of laser engraving, a security enhancing tech that governments are employing so as to achieve tamper-evident cards. With laser engraving you can permanently engrave texts, fingerprints, signatures, logos, photos and barcodes at the substrate level, and which makes altering the information virtually impossible without destroying the card. Laser-engraved information also carries the advantages of being extremely durable, the ability to withstand frequent physical contact, and high resistance to chemicals. It is essential that the overlay film you go for has superior graphic visibility and high degree of clarity as these properties will ensure that your card will have the same great consistency it had before being laminated. Because the overlay film is so thin (??m) it is easy for it to suffer defects such as pinholes and gauge bands that are invisible to the naked human eye but which will compromise the quality of lamination. As such you should opt to source for films from a manufacturer who has the necessary equipment and quality control measures required to prevent such defects. A plus would be going for a manufacturer who can create the overlay films in a way that minimizes chances of air entrapment during the lamination process.