With the continuous progress of the printing industry and the continuous improvement of printing technology and printing equipment, offset printing has been favored by its unique advantages, such as fast and convenient plate making, low cost, high printing quality, wide range of suitable papers, large or small printing quantity, so as to obtain rapid and extensive development, then it occupied the leading position in the international printing industry, and its offset printing ink also developed rapidly.
But there are so many kinds of offset printing inks in market, how shall we choose one?
Offset printing ink can be divided into sheetfed offset printing ink and rotary offset printing ink according to printing machines; According to different drying methods, it can be divided into penetration offset ink, thermosetting offset ink, UV / EB offset ink and iron offset ink. Different types of inks have different printability and application.
Offset bright ink
Offset bright ink is made of synthetic resin, dry vegetable oil and high boiling alkane oil. Offset inks are composed of high-quality pigments and additives. It is used for printing high-grade exquisite prints such as picture books and pictures on coated paper by single-color, duplicators or multi-color offset presses. The gloss of the ink mainly depends on the film after the ink vehicle(varnish or called resin) is dried. The ink has good gloss and leveling property. It should be able to form a plane attached to the surface of the substrate to directionally reflect the incident light, that is, it can reflect lights like mirrors, which requires the ink vehicle to stay on the surface of the substrate as much as it can.
Offset resin ink
Offset resin ink is made of synthetic resin, dry vegetable oil, mineral oil, high-quality pigment and inks extenders. Offset resin ink is characterized by less vegetable oil content and high solvent ratio. Solvent oils are usually high boiling alkane, which plays a role in reducing viscosity in the ink. When the ink is transferred to the paper, this part of the solvent oil quickly infiltrates into the paper fiber under the action of capillary, which speeds up the drying speed of the ink and reduces the rubbing fault of the printed matter.
UV offset ink
UV ink is used for offset printing, which is usually called UV offset printing. UV offset printing ink is a kind of ink that uses ultraviolet (UV) radiation energy to make liquid chemicals solidify into ink film. It requires a UV curing unit in print machines. As one of offset printing ink, UV offset printing ink should first be able to print in the way of offset printing, so UV offset printing ink should also have some characteristics of ordinary offset printing ink to meet the requirements of printing suitability.
It is a skilled and technical work to choose a right ink, printers need to know their printing jobs and machines well, meanwhile need to know the ink characteristics of different inks, then to choose the right one. As the leading offset ink manufacturer in China, Kingswood inks has an experienced technical sales team, please contact us, they will give you valuable suggestion and recommendation.
