Coding ink for blister pack

Which type of ink is used for coding on blister pack.

Heat resistant fast drying volatile ink

Yes, Mr. Manoj , However be sure that too fast drying ink is also create the problem i.e. drying the ink at cartridge orifice/roller/tank. So, its recommendation to to use the combination of solvent base ink and diluter (helping for increases the mileage of print & prevents the rollers/ink duct from blocking.)

There is also risk associate with solvent base ink usage. Ink may migrate to product as many blistering machine dont have pin hole detection system.

Methyl ethyl ketone and acetone are used as solvent