Milk packaging film printing, must pay attention to three things

the milk packaging film products on the market now has a white film, black and white film, pearl film, high barrier film, such as polyamide type commonly used printing ink printing ink, it is in many types of ink and polyethylene an affinity, to make the printing don't rub off must be controlled printing process of liquid membrane.

1, the ratio of ink must be according to the change of environmental climate change

inappropriate solvent ratio will result in printing ink drying difficult and surface 'false'. False high dry refers to ink solvent ratio of volatile solvents are volatile, low volatile is not completely volatile, ink was dry crust surface, printing place after a period of time, continue to permeate, residual solvent ink adhesion and decoloring.

2, printing speed and drying oven temperature

printing speed cannot too fast, the oven temperature in 30 ~ 40 ℃, so in order to make ink solvent complete curing and volatilization, strengthen the printing ink adhesion fastness.

3, printing workshop environment

printing workshop environment must ensure that a certain humidity ( Between 60% ~ 70% is preferred) To have good ventilation, temperature at 25 ~ 30 ℃ to be beautiful, too dry the environment will cause membrane electrostatic hard to release, too humid environment will make ink volatile difficult, fastness to decline.