Process for printing QS quality safety sign on gold card paper

Abstract

The process relates to a process for printing a QS quality safety sign on gold card paper, which comprises the following steps: 1, carrying out computer color separation on a QS sign pattern to be printed, and separately making an electronic file with all edges longer than the size of a white pattern; 2, making 3 films by using the file made in the step 1; 3, carrying out plate burning by using the films in the step 1 to make 3 corresponding printing plates; 4, installing the printing plates obtained in the step 3 on an offset press; 5, pouring a shell-lac alcoholic solution and water in a first machine set; pouring white ink and a fountain solution in a second machine set; and pouring spot blue ink and the fountain solution in a third machine set; 7, installing ultraviolet light tubes between the first machine set and the second machine set, between the second machine set and the third machine set and behind the third machine set; 8, printing shell-lac by the first machine set, printing the white ink by the second machine set, and printing the spot blue ink by the third machine set, and then obtaining a QS sign printing product. The process has the advantages of convenient printing, less process faults, flat and smooth ink layers and good handfeel.

Description

technical field [0001] The invention relates to a printing process, in particular to a process for printing QS quality and safety marks on gold cardboard. Background technique [0002] The surface of gold cardboard has a metal-like texture and gloss, which can greatly improve the aesthetic effect and grade of commodity packaging, so it has been widely used in the field of food packaging and decoration. The General Administration of Quality Supervision, Inspection and Quarantine stipulates that the "QS (Quality Safety)" quality and safety mark must be printed on the outer packaging of the food that implements the quality and safety market access system before leaving the factory. Those without the "QS" mark must not be produced, sold and used. [0003] The letter "Q" of the "QS" logo is blue, and the letter "S" and the background color are white. Generally, when printing the "QS" logo on gold cardboard, make a film sheet (film) with the letter "Q" and a film sheet with the l...

AI Technical Summary

Problems solved by technology

[0005] 2. Due to the poor ink absorption of gold cardboard during printing, it will cause ink rejection failure, which in turn will cause the problem of dirty printing

[0006] 3. Due to the poor ink absorption of gold cardboard, a large amount of ink that cannot be absorbed will accumulate on the blanket, which will crush the blanket and printing plate, increase the loss of printing auxiliary materials, and increase the cost

[0007] 4. Due to the poor ink absorption of gold cardboard, it will cause uneven transfer of ink, which will make the thickness of the ink layer on the printed matter uneven and inconsistent, and the surface of the ink layer is not smooth enough, which will eventually make the visual effect of the "QS" logo and feel bad

[0008] 5. After the ink is transferred and printed on the gold cardboard, because the surface of the gold cardboard is relatively smooth, the ink imprint formed is easy to be wiped off, resulting in sticky print patterns and dirty backs

[0009] 6. This process needs to print white ink twice, which will greatly increase the cost. Generally, for the same brand of ink from the same manufacturer, the price of white ink is 7-8 times more expensive than inks of other colors commonly used; and if you only print white ink once, Because the gold cardboard has poor ink absorption and is relatively smooth, it cannot cover the metallic color of the gold cardboard itself well, making the white of the background color and the white of the letter "S" not solid and full