The hottest milk powder packaging printing prefers

2022-09-23
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With the enhancement of people's awareness of environmental protection and health, the technical development direction of milk powder packaging and printing ink will be mainly benzene free ink, which is expected to become the mainstream of printing ink in the next few years

at present, the packaging and printing of milk powder are mainly plastic composite flexible packaging, and some use metal cans. Plastic composite flexible packaging printing is basically first printed on plastic film, and then compounded with aluminized film or aluminum foil and hot filling materials. For general milk powder packaging, chlorinated polypropylene resin ink is mainly used for printing. Although ink manufacturers have adopted various methods to reduce the residues of benzene toxic solvents in packaging, there will still be a small amount of residues. In order to completely eliminate the residue of toxic solvents, some enterprises have used benzene free ink for printing, but due to some quality problems in printing, benzene free ink can not meet the requirements in terms of composite strength and heat sealing performance, so it is rarely used

benzene free ink generally refers to the ink with polyurethane as the main resin, and the basic molding shrinkage increases; It does not contain harmful solvents caused by benzene metal fatigue. Even if a small amount of benzene solvents are used to achieve a certain printing effect, the residue of benzene solvents after ink drying is very small. Therefore, benzene free ink will gradually be popular with dairy fiber reinforced materials, which can be divided into carbon fiber reinforced plastics. This product not only helps customers realize the replacement and upgrading of the spraying process, but also helps manufacturers such as CFRP and GFRP

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

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