Benzene free ink: will become the mainstream of printing ink

With the enhancement of people's awareness of environmental protection and health, the future direction of technology development for milk powder packaging and printing inks will be benzene-free inks. In the next few years, benzene-free inks are expected to become the 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 plastic film, then compounded with aluminized film or aluminum foil and hot filler material.

For general milk powder packaging, chlorinated polypropylene resin inks are mainly used for printing. Although ink manufacturers have adopted a variety of methods to reduce the residual of benzene-based toxic solvents in the packaging, there is still a small amount of residue. 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 as the main resin ink, basically does not contain benzene solvents, even to achieve a certain printing effect, the use of a small amount of benzene solvent, the ink after drying the benzene solvent residue is also very small. Therefore, benzene-free ink will gradually be welcomed by dairy producers.

It is reported that at present, some ink production companies are also researching and developing more environmentally friendly water-based plastic printing inks, and have entered the trial printing stage. Once the technology is mature, it will be promoted and applied to ensure the health and safety of milk powder packaging.