How to make Printed Hinged ink Cigarette Box that dries too slowly, ages prematurely, and has a clear odor?

How to make Printed Hinged ink Cigarette Box that dries too slowly, ages prematurely, and has a clear odor?

The most common problems of printing with relief parts are Printed Hinged Lid too slow to dry, premature aging, and obvious odor. The causes and solutions are described below.

(1) Printing ink dry, easy to wipe off

Oxidation polymerization dry letterpress zero printing plastic ink printed on polyolefin film, after 2~3 days or even longer to dry, must add the right amount of drying agent. The amount of white dry oil is 5%~15%, red dry oil is 2%~5%, can also be mixed with the two, the drying time can be shortened to 8~24h.

Printing ink is not dry, in addition to the surface of the film is contaminated with impurities or workshop humidity is too large (relative humidity above 95%), most of the drying agent is caused by insufficient amount. But the amount of white dry oil can not be too much, such as more than 20% of the quality of ink, sometimes will produce ink layer has been dry, but always have a sticky feeling, will also cause the disadvantage of mutual adhesion after printing overlapping. Therefore, the amount of drying agent added should be weighed, can not be randomly added.

(2) Printing ink layer after 1~2 months easy to rub off

Letterpress zero printing plastic ink is easy to age, easy to be rubbed off, which is a major disadvantage. But under normal circumstances can maintain 6 months without aging. Premature aging is caused by adding too much drying agent or too strong ultraviolet light. Careful control can avoid this malady.

(3) printing ink layer has a larger odor

There is a red dry oil in the drying agent, with cobalt naphthenate and manganese naphthenate as the main component, naphthenic acid has a smell similar to the smell of cockroaches, ink added to the red dry oil will be some smell. In addition, there is a red dry oil with cobalt turpentine and manganese turpentine as the main components without this smell, white dry oil also has no smell, to choose to use can avoid this disease.