Printing Method Auto Machine Printing UV Ink Sticker For I3200 XP600 Printer

Application of Paper Printing UV Varnish

UV varnish can be widely used in off-line coating of roll coater, gripper coater, gravure coater and flexo coater.

The high-efficiency roll coater for thick paper is composed of rolls rotating in the same direction, and can be divided into many models according to different combinations of rolls and centerline angles between rolls. The gripper type coater is suitable for paper with a specification of 80-120m; the gravure coater and flexographic coater are mainly for partial coating. The gravure coater coating can make the local image clear and the coating uniform. However, the amount of coating can only be adjusted by the amount of dilution. As long as the depth and shape of the gravure lines are not changed, the amount of coating cannot be increased or decreased. However, when the flexographic plate is coated, the edge of the image is prone to edge contours, which lack sharpness. However, the adjustment and revision of the coating amount are relatively easy.

After coating with any of the above-mentioned coating machines, a hot air oven or an infrared oven is generally used to volatilize the solvent, and then it is cured by ultraviolet rays. When paper is coated with UV varnish, it can be printed first, and the off-line method of coating varnish in post-processing can be adopted. The acceleration speed is generally 30-60m/min.