Offset printing ink printing foil technology

The unique charm and novel printing effect of aluminum foil packaging make the cosmetic boxes, gift boxes, high-grade tobacco and wine packaging boxes and other high-grade articles printed with aluminum foil papers, which also increase the value of the goods.

Under the fierce competition in the market, the display of a brand new package is undoubtedly the best choice for customers as long as they have the conditions. In addition, due to the inherent metallic luster and metallic color of aluminum foil, it is not necessary to print gold, silver ink or hot stamping anodized aluminum to “make-up and decorate” the printed matter. Only a well-designed artwork and clever use of ink color can be obtained. Colorful print effect. This is also unmatched by any paper product printing.

However, for the moment, the use of Offset Printing machines for printing aluminum foil items has certain difficulties in application technology. In fact, regardless of any printing process or printed item, it is impossible to be perfect. Although some problems can hardly be avoided in the printing process, the defects that affect the printing quality and economic efficiency cannot be ignored. In general, the difficulty is mainly due to sticky and dry prints. Then, how can Zinc Licensing eliminate aluminum foil and overcome these two difficulties? Worth exploring.

The basic concept of aluminum foil

Aluminum foil, commonly known as "gold cardboard, gold foil, metal foil." The term “steel fine paper, steel paper, aluminum paper” is essentially aluminum foil.
The so-called foil, in terms of metal material, refers to a specially processed metal foil. The thickness of this foil is 0.2 mm or less. Since the metal materials used for foil making are different, in order to show their properties, gold, silver, tin, nickel, aluminum, etc. are added before the foil words to show differences.

There are two methods for producing aluminum foil. One is a composite method in which aluminum foil and paper are glued and rolled together. The other is that aluminum foil is plated on the paper surface by vacuum aluminum plating. However, regardless of the method used to produce the name of the foil, the surface layer is aluminum foil, and paper is only its susceptor.

Printability of aluminum foil

It is very important for the printer to understand the meaning of printability, but because of different opinions, the interpretation of printability also has its own emphasis. To sum up, the main purpose of printability is to adjust the nature, function, and mode of use of materials, production conditions, and printing processes used in the printing process. Its purpose is to improve the quality of printed products and operating efficiency.

The printability of aluminum foil is rather special because it is a composite of aluminum foil and paper, and its surface aluminum foil or aluminum foil has a metallic luster, a tough texture, and a smooth surface. In the printing process, the surface properties of the aluminum foil are directly related to the printability of the printing press, ink, and the like. Therefore, relatively speaking, the printability of aluminum foil is actually the printability of aluminum foil.

1. The surface strength of aluminum foil is very high, it can adapt to the speed of high-speed printing presses, and it can also produce the pulling force with the increment of ink stickiness. It has good adaptability to improve the production efficiency and stabilize the printing quality.

2. The smoothness of aluminum foil is high, which is conducive to the transfer of ink. The imprinted ink film is flat, clean, text, and clear.

3. Aluminum foil structure is tight, there is no gap, and its surface is similar to the mirror effect. Therefore, it does not have absorption properties like paper.

4. During the printing process of aluminum foil paper, it is sometimes found that fine oil is distributed in the ink layer in the field printing, and the larger one can be seen by the naked eye, and the tiny one needs to be observed with a magnifying glass. Although this drawback has no major obstacles, it also has an impact on the quality of print in the field, the integrity of outlets, and the clarity of the artwork. Why do you have this disadvantage? The root cause lies in the fact that residual grease in the production of aluminum foil is in trouble. Therefore, the remaining grease must be removed before printing to improve the printability of aluminum foil.

5. The curling problem of aluminum foil is caused by the difference in physical properties between the material structures. Aluminum foil has high strength, high density, good stability, and is not easy to expand and contract; the paper has low strength, relatively small density, and poor stability and is easy to expand and contract. The properties of aluminum foil and paper are very different. These two kinds of materials with different properties are compounded by the curling factor. However, this is only its intrinsic factor. Generally, it will not curl when it is suitable for its conditions, but the ambient temperature and humidity will change, and in inappropriate conditions, aluminum foil will be induced to curl.