The Selection Of Offset Printing Inks For Different Printing Machines And Substrates

As one of the most important printing materials for information reproduction, ink should be suitable for printing. Offset Printing Ink is mainly composed of colored pigment (dye, etc.

Pigment is neither soluble in water, nor soluble in oil or binders, with a certain color of solid powdery substances, including inorganic pigments and organic pigments. It is not only the main solid component of the ink, but also printed on the object visible on the colored part. To a large extent determines the color of the ink, thin, light - resistant properties. At present, the black pigment used in printing ink is mostly inorganic (such as carbon black), while the color ink is mostly organic pigment.

Offset Printing Ink from Soy Offset Ink Manufacturer according to the printing machinery, can be divided into sheet-fed offset printing ink and rotary offset printing ink; According to the drying method, it can be divided into permeable offset printing ink, thermosetting offset printing ink, UV/EB offset printing ink and printing iron offset printing ink. Different types of inks have different printability and USES.

The selection of offset inks for different printing machines and substrates

1. Ink for web offset printing

The web offset press used by the ink is usually called offset rotary ink, this ink is basically divided into the following two types: & NBSP;

A. Osmotic drying: due to the use of newsprint, offset paper web offset printing press printing speed is high, fast drying ink, so commonly used ink for osmotic drying.

B. Thermosetting ink: in the modern commercial web offset press, printing unit increase in the second half of drying device, in order to adapt to this kind of production condition using thermosetting ink, the ink in the drying device heating, printing ink solvent volatilization of makes the ink membrane drying rapidly, thermosetting ink of drying oil such as linseed oil content is less. And petroleum agent content, other components and sheet-fed offset printing ink slightly the same, thermosetting ink used by the paper than the penetration of drying ink paper quality.