Milk Powder Packaging: Environmentally Friendly Benzene Ink Will Become Mainstream of Printing Inks

At present, the packaging and printing of milk powder is mainly based on plastic composite flexible packaging, and metal cans are also used. Plastic composite flexible packaging printing is basically printed on BOPP film or OET film, and then composited with aluminum foil or aluminum foil and heat sealing material.

For general milk powder packaging, chlorinated polypropylene resin inks are mainly used for printing. Although ink manufacturers have adopted various methods to adjust the ink structure and reduce the residual of benzene-based toxic solvents in packaging, there is still a small amount of residue in the packaging. . In order to completely eliminate toxic solvent residues, some companies have used benzene-free inks for printing. However, due to the quality problems of benzene-free inks in printing, the composite strength and heat-sealing properties cannot meet the requirements, so there are few applications.

Non-benzene ink generally refers to the use of polyurethane resin as the main resin ink, and basically does not contain benzene solvents. Even if a certain amount of printing effect is achieved, using a small amount of benzene solvent, the residual amount of benzene solvent after the ink is dried is very small. Therefore, benzene-free ink will gradually be welcomed by high dairy production.

For milk powder packaging and printing inks, the direction of future technology development will be benzene-free inks. With the improvement of people's environmental protection and health awareness, such inks are likely to become the mainstream of printing inks in the coming years. In addition, some ink manufacturers are currently researching more environmentally friendly water-based plastic printing inks and have already entered the trial printing stage.