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Causes and solutions for the incomplete and incomplete strokes in the hot stamping process

Dec 15, 2018

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This fault is mainly caused by the speed of hot stamping paper, printing plates and so on. For example, the plate is damaged or deformed, which is one of the important reasons for the incompleteness of the graphic imprint. Therefore, if the plate is found to be damaged, the plate should be repaired or replaced immediately. The plate is deformed so that the plate does not withstand the applied stamping pressure. The plate should be replaced and the pressure adjusted. If the gilding paper is cut and conveyed, the gilding paper will be too small when it is cut horizontally, or the deviation will occur when the cutting is performed in the skewed unwinding, which will make the gilding paper and the printing plate not match, and some of the graphics will be exposed. incomplete. In order to prevent such problems, it should be neat and flat when cutting the hot stamping paper, and the margin size should be appropriately increased. This problem can also occur when the speed and tightness of the bronzing paper are not good. The bronzing paper receiving device is loosely displaced, or the winding core and the reel are loosened, the unwinding speed changes, and the tightness of the bronzing paper changes, causing the image position to deviate, resulting in the lack of graphic and text. At this time, the winding and unwinding position should be adjusted. If the hot stamping paper is too tight, the pressure of the winding roller and the pulling force of the winding roller should be properly adjusted to ensure proper speed tightness. If the hot stamping material and the hot stamped material are uncomfortable or excessively dusted during printing, such a malfunction may occur, so care should be taken to adjust. In addition, the position of the printing plate moves and falls at the position of the bottom plate, and the pad of the embossing mechanism shifts, so that the normal hot stamping pressure changes, and unevenness may result in incompleteness of the graphic imprint, such as light pressure. Can increase the pressure. Therefore, in the hot stamping process, the quality of the hot stamping should be checked frequently, and the quality problem should be analyzed immediately, and the printing plate and the backing material should be inspected. The plate is moved or the pad is displaced, adjusted in time, and the plate and pad are placed back in place.

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