Food packaging printing ink improvement method

on food packaging printing ink produces the pungent odor, several improvement methods of ink, introduces below is only for your reference:

( 1) On cigarette packs solvent residues detection results and the commonly used solvents on the sensitive degree of sensory stimulation, can see the toluene and butyl acetate itself has the strong smell, and residual more easily, easy to cause the peculiar smell of smoke. So when carry on the improvement of printing ink is not used or less using the above solvents, switch to low odor solvent for replacement.

( 2) To replace printing ink to use raw materials such as resin, carries on the comparison to the smell of all kinds of resin after curing, using new resin solvent release sex good, low smell, but this is a must in the choice of guarantee under the premise of good ink, the ink, ink printing eligibility will not change.

( 3) Because gravure printing using the solvent is required, so the drying process is indispensable, such as drying processes cannot guarantee fully dry, the smoke target is easy to cause residual solvent and bad smell problem, therefore, the printing ink dry confirmation is one of the important means of odor control in printing. In general, in terms of specific paper gravure ink, printing the higher the temperature of the environment. Humidity is smaller, the slower the printing speed, the higher the drying oven temperature, the smaller the printing area, the printing ink on the easier it is to dry. Now the paper gravure ink used generally in temperature ( 25± 5) ℃, humidity, 65± 10) % of the printing environment, printing speed in 80-120 m/min, the oven temperature is 70 - Under the 100 ℃, can achieve most of the dry. Prints of the longer the storage time if, after the smell of the residue is the less, in general. Reach more than 7 days, the smell will be basically eliminated, the specific data and printing varieties, printing condition has great relationship.