The Processing Technology Of Acrylic Products
Now the use of plexiglass processing products more and more widely used, the requirements of plexiglass processing is also getting higher and higher, especially organic glass screen printing, which plexiglass manufacturers is a challenge, is also an opportunity, Master high-quality organic glass screen printing technology, plexiglass processing plant is an important technical force. The improvement of organic glass screen printing process has the following seven points:
1, To achieve a perfect image reproduction of a basic requirement is transparent positive film quality is better, that is, the edge of the network should be neat, opaque. Color separators and the use of printing ink with the same color.
2, positive film on the glass plate, and then exposure, the good screen hanging on the positive film on the negative, and parallel with the image axis. If there is moire, turn the screen to the left or right, until the moire disappears, the general turn 7 ° can. The area where the moire is easy to form is located in the direction of the screen wire and at the intersection of the screen. The main colors and darker colors cause more problems with moire.
3, For the four-color printing, should use the same size and stability of the aluminum frame, the use of the network frame are strained with the same type and type of screen. The use of dyeing screen to help eliminate the moire, screen tension everywhere to uniform, and four-color printing of the four screen tension of the same tension.
4, Grinding a good squeegee for high-quality printing is essential, knife blade Shore hardness of about 70. The doctor blade should be set at an angle of 75 °. If the angle of the doctor blade is too flat, the printed image may be blurred, and if the angle is too steep, the risk of the printed image is large.
5, Back to the ink knife should not be installed too low, if so, the film will be filled with excessive ink, printed matter easy to blur and rub dirty.
6, Mesh screen image with high viscosity ink printing, the more fine the need for thicker the screen of the ink.
7, the use of UV ink, mesh tone tone picture range should be selected for 5% to 80%, plastic scraper Shore hardness should be 75. In order to control the UV ink in the color overlay does not rub dirty, it is recommended in accordance with the green, magenta, yellow, black color order printing. When using UV inks, the screen thickness does not exceed 5um.
