What Are The Common Quality Accidents Of Gravure Printing?
What Are The Common Quality Accidents Of Gravure Printing?
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Gravure printing is one of the four major printing methods, and it is also the production process flow that packaging printing manufacturers need to master. It is inevitable to encounter various printing quality accidents during the production of gravure. Therefore, as a packaging printing and manufacturing manufacturer, solving and preventing problems is one of the capabilities that must be cultivated. So, the next thing to share is some common quality accidents and corresponding solutions in gravure printing.
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1. Printing brushing: It is mainly reflected in the fact that the solid color of printed products is not true, and light-colored plush appears. The cause of the fluffing is that the ink is too thick, the viscosity is too large, and the fluidity is too small, the water roller or rubber roller is aging, and the lint is lost. In this regard, we can add the appropriate amount of adjusting oil and printing ink additives to the printing ink when mixing the printing ink; if it is caused by the squeegee caused by the rubber roller, we need to replace the rubber roller with better printability, in addition to this In addition, the method of wrapping the fleece on the water roller can also be used to prevent the occurrence of hair loss.
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2. The printing color is dark: the color displayed when printing gold and silver ink colors is dim. The main reason for this is that the ink mixing time is too long; it is discolored by oxidation or erosion by chemicals such as acid, alkali, sulfur; it may also be caused by cross-coloring with other ink colors. Corresponding solutions include: metal printing inks should be used as needed; cleaning ink pumps, pipes, ink tanks, and printing plates on time; preventing printing ink cross-colors during printing, and if any cross-colors are found, they must be replaced immediately.
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3. Printing imprints are illegible: Sometimes the imprints and embossments of images and texts appear in the process of gravure printing. The main causes of this printing failure are improper adjustment of printing pressure, insufficient uniformity of the pads; too little ink or partial ink, too much ink oil; the surface of the paper is too rough or the background printing is not ideal. In this regard, we only need to make reasonable adjustments according to specific reasons to improve the occurrence of such printing accidents.
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The above is a brief share of some common quality accidents in gravure printing. Of course, in addition to the above points, in the actual production process, we will also encounter problems such as printing pastes, dirt and adhesion on the back of the printing. I believe that as the direct operator of the production process, being able to accurately and proficiently find the cause of the problem and solve the problem well is an important ability that we must work hard to cultivate and exercise.
