The method of offset printing with lamination is usually enjoyed by larger companies, manufacturers of plastic cards.
Feature of this technology lies in the fact that the cards are used for the manufacture of plastic sheets from A3 large format and more, which is placed on the procurement of 21 A3, and more on large format, produced large offset printing machine.
Such a method of manufacturing plastic cards requires a solid assembly capacity and high production costs. However, this method of production provides a significant advantage - high performance and lower cost plastic card. The whole process of manufacturing plastic cards using offset printing with lamination can be divided into the following stages:
Preparation of equipment and materials
First of all, the manufacturer of the special way of preparing mock-ups of plastic cards. Their number depends on how many colors are involved in the process of making maps, and how many sides of plastic should be printed. The prepared films are applied to an aluminum plate and sent into the chamber, where in conjunction with ultraviolet light at high pressure is required zasvechivanie parts of the workpiece.
This is done to ensure that in the process of painting water emulsion be attracted to the lighted parts of it. Also, during the preparatory phase to the layout is the markup for the subsequent cutting of cards.
For the manufacture of printed forms can be applied modern technology CTP, which is the direct transfer of information from a computer file onto a plate, with the exception of procedure output forms, copy editing. In addition, the technology CTP (Computer to Plate) can significantly improve the displayed image due to the fact that there is no extra step.
To manufacture plastic cards using offset printing with lamination is commonly used plastic with a thickness of 0.2 to 0.6 mm. With a thickness of 0.6 mm plastic printing is performed on both sides of the workpiece, if handled more subtle pattern, the printing is applied on one side of each of the two sheets (one sheet - front side, on the other - flip), which are sintered at a later .
The objective of this phase - paint the white sheet plastic laminating before the procedure. Paint is made with special dyes: folic (they are specifically designed for printing on absorbent surfaces, bad, and then sealing), or special printing inks UV-curing, which is binding under the influence of ultraviolet radiation.
At this stage of the procurement is going to kind of "pie":
- The first layer of plastic "face" - the printed side of the laminate
- The second layer of plastic "turnover" - well, the printed side to the laminate
If you used the plastic 0.6 mm thick is, accordingly, the laminate is placed on both sides of the workpiece.
This is done not by hand, and on special equipment, for an absolutely precise alignment of all parts of plastic pieces.
Once a set of pieces is over, they go under the press, where high pressure and temperature effects make separate sheets of laminate and plastic into one.
The final stage of manufacturing of plastic cards is that pre-marked sheets of blanks are fed into the automatic vyrubschik, where a simple motion of turning in ready-to-use plastic cards.