1, the surface tension of the paper must meet the requirements, ordinary gold cardboard, light gold, silver, and other surface tension to 35 dyne, when the ordinary gold cardboard, light gold paper, silver cardboard, the surface tension is less than 34 Da Therefore, it is easy to pull the ink, the surface tension reaches 36 dyne, basically no ink pull, if it is lower than 34 dyne, and the static electricity on the surface of the paper is large, the paper can completely solve the ink pull after surface varnish treatment.

White card glass paperboard must have a certain surface strength, that is, the surface strength is P≥X+U+N:

P-fiber binding force between filler and rubber compound

X—Ink adhesion to paper

U—inertia force (peel tension)

N-blanket's adsorption force and viscosity

2. Master the UV lamp power, understand the life of the UV lamp, and arrange the order of the UV lamp reasonably.

3. Adjust the viscosity of the ink used properly, and add an appropriate amount of de-adhesive (no more than 5% for the department) to the ink to improve the adhesion of the ink to the paper.

4, properly adjust the printing pressure, so that the pressure between the blanket cylinder and the impression cylinder can be reduced, or select the appropriate printing speed, in order to properly reduce the speed is better, so that the peeling force between the blanket and the paper after imprinting Can be reduced.

5, to ensure that the tape is smooth, if the surface of the tape is rough, the friction is large, the tension increases, if necessary, need to replace the new tape.

6. In order to control the ink and ink, it is necessary to consciously reduce the amount of water in front of the ink pad, and increase the water in the ink pad at the back.