Ink auxiliaries are auxiliary materials used to adjust the ink for different printing conditions. There are many kinds of ink additives, commonly used are remover, remover, desiccant, slow drying agent, thinner, anti-friction agent, varnish, anti-fouling agent, varnish, etc. The role of ink additives and its use. 1 The release agent has little stickiness and is generally used in lithographic and flexographic printing inks to reduce its tackiness. In offset printing, due to changes in paper properties and printing conditions, such as large oil absorption, poor surface strength, and positive and negative surface coating phenomenon, when the desiccant is excessive or the room temperature of the printing room is too low, it will cause the paper to pull the hair, printing Stacking, pasting, and other defects affect the quality of printed products. Therefore, when the above phenomenon occurs, an appropriate amount of release agent can be added, which can reduce or eliminate the above failures. 2 Diversion agent, also known as diluting agent, is used in offset printing. There are two common light-reducing agents: one is a clear oil for use in bright inks, and the other is a resin-type lighter for resin inks. If the ink is found to be too dark to restore originals during printing, appropriate amount of dissolving agent can be added to achieve the desired effect. 3 Desiccant is one of the most important printing ink additives. According to the printing conditions and the printed paper, the amount, type, and method of use of the desiccant are also different. The commonly used desiccants are red dry oil and dry white oil. The dryness of red dry oil is from outside to inside and the white bath oil is dried inside and outside at the same time. When printing, it is necessary to select the type of dry oil according to the drying requirements of the printed product and the ink color. The amount of general dry oil is 2%-3%, but too much will be counterproductive, so that the drying rate is reduced. 4 Anti-desiccants are also known as antioxidants, which are an ink additive that is compatible with desiccants. In the printing process, shutdowns are often caused by various reasons. When the downtime is long, the ink on the ink will dry out. In order to solve such problems, it is often necessary to add an appropriate amount of anti-drying agent to the ink on the machine and run the machine a few times so as not to dry it too quickly. 5 In the printing, due to ink stickiness or poor paper quality, it often results in failures such as paper picking, offset printing, etc., affecting the normal printing process. At this time, in addition to adding an appropriate amount of release agent to reduce ink stickiness, it can also be added. A small amount of thinner to reduce the viscosity of the ink, so that printing goes smoothly. There are many types of diluents, which are generally low-viscosity No. 6 varnish. 6 Anti-friction agents are also called smoothing agents. Most of these substances are based on wax materials. When printing ink particles are coarse, such as white ink, gold and silver ink, etc., appropriate anti-friction agents are added to increase the friction resistance of prints. Smoothness. 7 Most of the high-grade prints such as trademarks and pictures, and the surface of printed products are covered with light to achieve high light effects. When using varnish, they can be mixed in the ink before printing, and can also be printed after printing. Add a varnish. However, the varnish-treated prints tend to yellow after a long exposure and have poor lightfastness. Therefore, there are many new gloss oils that have been replaced with varnish oils. In addition to the above-mentioned several commonly used ink additives, there are anti-fouling agent, anti-foaming agent, printing oil, etc., which will not be repeated here, use only in strict accordance with the instructions required to operate. Information Processing: Carton Street
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Remover
Lighter
Desiccant
Slow drying agent
Thinner
Anti-friction agent
Cover oil
Knowing these common ink additives can solve many printing problems!