1. Add proper auxiliaries in
ink. Adding appropriate auxiliaries to the ink can adjust the printing
adaptability of the ink to make the printing smooth. Most auxiliaries have
adverse effects on the gloss of finished products. For example: anti-stick
agent, the main raw material is six grains of powder, after adding, because of
corn powder precipitation, imprint film surface rough, finished product gloss
poor. Therefore, the general additives to add ink not more than 5, if
considering the impact of gloss, should be as little or no. But the
fluorocarbon surfactant is different of book
printing factory in China, it can prevent the ink layer to appear orange peel, wrinkle and other
surface defects, at the same time can improve the surface gloss of printing
products.
2.
Use dry oil correctly. For advanced strong light fast dry ink , at room
temperature, humidity conditions, has sufficient drying capacity. If you need
to add should be in the following conditions:, in the winter temperature,
humidity is low; second, ink must be added anti-stick agent, anti-stick,
thinning ink oil, etc., should add dry oil. In the process operation, the
correct use of dry oil is very beneficial to the finished product to form
luster. This is because the paper needs a certain amount of time to absorb the
adhesive material, in this process, as soon as possible to concentrate the
adhesive material to film drying, is the key to good gloss.
3.
Watch the spray. Powder spraying, like ink, also produces condensation,
especially in poorly sealed bags or buckets, where the powder is sprayed wet
and condensed into larger particles, sprayed on the ink to form a rough film on
the surface of the ink layer reduce the original gloss. Therefore, spray powder
should pay attention to moisture-proof. In addition, a heating device is
arranged on the mechanism of the powder spraying device. When using powder
spraying, the heating device should be checked for failure.
4. The book
printing factory in China will adjust the machine correctly. Whether the thickness of the ink layer
reaches the standard will also affect the gloss of the ink. Such as poor pressure
adjustment, high dot expansion rate, ink layer thickness does not meet the
standard, the finished product gloss slightly poor. Therefore, to adjust the
pressure, so that the dot expansion rate control at about 15%, printing ink
layer thickness, flat, gloss.
Add ten thousand miles of water
5.(oil 0). This kind of oil viscosity is very large,
it is very thick, can adjust the ink concentration, make the thin ink thicken,
increase the gloss of printing products.
6. add light paste. Bright
paste from raw materials processing high gloss, can increase the gloss of ink,
but the dosage should not be too large, otherwise will reduce the drying speed
of ink, sticky, pull phenomenon, affect gloss.