What are the allowable quantity differences in printed packaging materials?
Large areas of the current general offset printing, letterpress printing and other printing methods, the size of the largest paper size, the entire area of more than a full sheet size, it is limited by mechanical equipment. Screen printing can be a large area of printing, screen printing products today can reach up to 3 meters x 4 meters, or even higher significantly.
Light, bright colors for screen printing in India due to the leakage characteristics, so it can use a variety of ink and paint, not only can use the slurry, binder and pigment can also use coarse pigment. In addition, the method of screen printing ink preparation is simple, for example, it can be directly transferred into the light pigment ink, which is another main feature of screen printing. Screen printing products have strong light and have great advantages. Practice shows that the black ink coated paper embossing by measuring the scope of the use of the maximum density value, compared to 1.4, 1.6 and 1.8 letterpress, gravure, screen printing of the maximum density deviation range of 2 can be, therefore, the light screen printing products than other types of printing products lightfastness stronger resistance that is more suitable for outdoor advertising, signs of purpose.
The ink thickness, three-dimensional sense of common offset and letterpress 5 microns to about 12 microns in gravure printing, flexo printing ink layer (aniline) is 10 microns thick, and the wire net printing ink thickness than the ink layer thickness is generally up to about 30 microns. Thick screen printing special printed circuit board, ink film thickness of up to 1000 microns. Foam ink printing Braille, foaming layer thickness of up to 300 microns. Screen printing ink layer thickness, printing texture rich, three-dimensional feeling strong, this is other printing methods can not match. Screen printing can not only print in monochrome, but also capture and screen color printing.
Printing, printing, usually three printing on a flat surface of a substrate. Screen printing can not only be printed on a flat surface, but also printed on a surface, and the spherical surface of the substrate is convex. On the other hand, screen printing is not only printed on hard objects, but also can be printed in a soft material without substrate limitations. In addition, screen printing, in addition to direct printing, can also be used according to the needs of indirect printing process, which is to use silk screen printing in gelatin or silica gel version, and then transferred to the substrate. Therefore, we can say screen printing is adaptable and wide range of applications. Strong, rich, textured layer thickness
