Fourth, thinner
Ink thinner
In the printing due to ink viscosity is too large or poor quality of paper, etc., will often produce paper pull hair, off the version and other faults, affect the normal printing, at this time, in addition to adding the appropriate amount of relieving agent to reduce the viscosity of the ink, but also A small amount of thinner can be added to reduce the viscosity of the ink and allow printing to proceed smoothly. There are many types of diluents, which are generally low-viscosity No. 6 varnish.
Fifth, anti-friction agent
Polypropylene Wax (PP Wax)
Anti-friction agent is also called smoothing agent. Most of these substances are based on wax materials. When the printing ink particles are coarse, such as white ink, gold and silver ink, etc., the appropriate amount of resistance is added to increase the friction resistance and smoothness of the prints. .
Six, cover oil
Cover oil 6222
Most of the high-grade prints such as trademarks and pictures and the surface of printed products are covered with light in order to achieve high-gloss effects. When using varnish, the base can be added to the ink before printing, and can also be printed after printing. Add a varnish. However, overprinted prints tend to yellow after a long exposure, and their light resistance is poor. Therefore, many new gloss oils that have been replaced with varnish have been used.
In addition to the above-mentioned several commonly used ink additives, there are anti-smearing agent, anti-foaming agent, printing gold oil, etc., will not repeat them here, use only in strict accordance with the instructions required to operate.