Ink additives with industry regulation is the adapt to different printing ink of the conditions of the auxiliary materials. Ink additives, general and commonly used a variety of sticky agent, and light from agents, desiccant, the desiccant, diluent, resistance to MaCaJi, cover light oil, prevent the ceng dirty agent, printing ink, the following simple oil additives are introduced the function and use ink method.
A, and adhesive application
Withdraw adhesive application has very little viscosity, general for lithography and sudden printing ink in order to reduce its viscosity. In printing, the offset printing paper performance and printing conditions change, such as big oil absorption, surface strength difference, both have fall phenomenon in coating, when desiccant excessive or printing workshop room temperature is too low, can cause paper, printing pile of edition, mix paste version and fault, the quality of printing effect. Therefore, when appeared above phenomenon, can join the amount from the sticky agent, can have weakened, eliminate the above the role of the fault.
Second, removed from talk about agent
Withdraw light agent also say the dilute agent, is in the use of the big offset printing auxiliaries. Common removed from light agent has two kinds: one kind is transparent oil, used for light type printing ink; One is colophony removed from light agent, used for resin printing ink. If found in printing ink color too deep can't restore the original, you can join a moderate amount of light agent, so as to meet the ideal effect.
Three, desiccant
Desiccant is very important one of printing ink additives. According to the conditions and printing paper printing, the dosage of different kinds and desiccant, use method is different also. Commonly used desiccant have red dry oil, white dry oil two kinds, red dry oil from inner to outer in drying is dry, white bath oil is at the same time with the dry. The printing in accordance with the printing of dry my request and the ink to choose the type of dry oil. General dry the dosage of the oil for 2% 3%, too much, it will be comfortable, make the drying speed down.
Four, the desiccant
The desiccant also called antioxidant, this is a kind of relatively and desiccant ink additives. In the printing process, because all sorts of reasons often can cause downtime, when down time is long, the ink will dry peeling. In order to solve this kind of problem, and often to join the amount of ink on the reverse desiccant, and the machine running several, make its have not dry too fast.
Five, the thinner
In printing ink or paper too because of sticky quality were so poor, often can produce paper galling, off version and fault, influence printing of normal, at this time, in addition to join the amount from the lower viscosity the ink was used, also can add a little thinner to lower the viscosity, make the ink printing smoothly. The type of thinner more, general for low viscosity oil number six printing ink.
Six, MaCaJi resistance
Resistance to MaCaJi also called smooth agent, this kind of matter most to wax material, mainly in the printing ink particles are coarse, such as white ink, gold and silver ink, add a little resistance, increase the attrition sex and print resistance smoothness.
Seven, cover light oil
Trademark, an album of high-grade printing, printing surface to cover most after processing, light in order to achieve GaoLiangGuang effect, use light cover, may in the oil before printing, and will mix in the printing ink, also can be in print printed seven after a cover oil light. But the light of printing, cover with long after yellow will put, good resistance to light the gender is poorer, now had so many alternative cover the oil light oil shin kong been applied.
In addition to the above several common printing ink additives outside, still have the ceng dirty agent, the bubble agent, printed in the golden oil is no longer say, when used as long as strictly according to the specifications for operation can.