Points to note plexiglass screen printing

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Points to note plexiglass screen printing
Release time: 2015年07月03日 【字体:

First, the requirement in the plexiglass screen printing products in the network edge should be neat and opaque. When using color separations and printing ink used was the same color.
    Second, the positive-negative on the glass, and then exposed to a good stretch on the positive image halftone negatives and parallel to the image axis. If a moire screen left or right until the moire disappear, usually turn to 7 °. Easy to form a region located moire silk screen mesh direction and intersections on the screen. More problems main color and darker color caused by moire.
    Third, it may be necessary in four-color silk screen printing, so for four-color printing, you should use the same size and stability of the aluminum screen frame, screen frame are used stretch of the same type and model of the screen. Use dyed mesh helps to eliminate moire, screen tension to be uniform throughout the same four-color printing and four network version of the stretching tension.
    Fourth, lapped squeegee is essential for high-quality printing, knives Shore hardness of about 70. Squeegee should be set at a 75 ° angle, if squeegee angle adjustment too flat, printed image may be blurred, if the angle is too steep transfer, screen printing image deformation big risk.
    Fifth, the use of UV inks, tonal range halftone positive image should preferably 5% to 80%, a Shore hardness of the squeegee should be 75. To control the UV ink does not rub dirty when color overprint, recommended by the cyan, magenta, yellow, black color sequence for printing. When using UV ink, screen thickness not exceeding 5 microns.
    Sixth, the return blade should not pretend to be too low, and if so, will the film version of the full excess ink, print and rub dirty easily blurred.
    Seven, halftone images with a high viscosity ink, finer screen requires more concentrated color ink.

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