With the development of the society, slowly in the people's standard of living rise, people on food packaging
and therefore put forward higher request.
Ink as printed material, when it is used in food packaging, must achieve the corresponding application industry standards.
In the current food plastic packaging printing, the most widely used benzene soluble chlorinated polypropylene ink.
Manufacture and use of this kind of ink technology has been mature, mainly used in BOPP (
Two-way stretch polypropylene)
Printed materials, and adopts the intaglio printing method.
Good though the ink printing eligibility and post-press processing performance is good, quick drying, but due to large relative toxicity of toluene, print solvent residual values on the high side, and the thermal stability of chlorinated polypropylene is poor, in the process of production and storage, easy release of chlorine and hydrogen chloride formation, make the ink is strong acid, the print roll is produced in the production of heavy corrosion, in use process will cause harm to workers' health and safety, and the remaining residues in packaging products, so this kind of ink are reaching the elimination trend, in Europe and some developed countries have successively develop prohibited or control regulations on the use of the ink.
It is because of benzene soluble ink exist problems, environmental printing ink arises at the historic moment.
So what are the environmental protection in food packaging printing ink can be used?
The next printing - shenzhen
Blessed is to introduce one by one to you: 1, electron beam curing ink (
Electron beam curing ink is refers to under the irradiation of high energy electron beam can quickly shift from liquid to solid ink, also known as EB ink.
High energy electron beam, solids such as pigment and filler has a strong penetrating power, there will be no ink is absorbed by the pigment or filler block, the inside of the ink film drying not be affected.
2, water-based ink, water-based ink is the vast majority of flexo printing office box at home and abroad used in printing ink, it is mainly composed of water soluble resin, organic pigments, solvents and related auxiliary by the composite grinding processing.
Water soluble resin is the nexus of water-based ink, often choose domestic water-soluble acrylic modified resin as a link of material, the heat resistance, weather resistance, chemical resistance, resistance to pollution and glossiness has significant advantages, such as not only can reduce the printing quality of residual toxicity, and can prevent fire by static contact with flammable solvents.
Water-based ink is not only a new type of 'green' printing ink, and is the best product to replace benzene soluble ink.
3, ultraviolet (
Curing ink uv curing ink is refers to under certain wavelengths of ultraviolet light, ink links within the crosslinking reaction between, to shift from liquid to solid finish curing inks, it before the link is dissolved, macromolecular prepolymer is firmly form ink film.
The uv curing ink is mainly used for the flexible printing, soft base material it is made up of prepolymer, reaction diluent, pigments, additives, light initiator/composite.
Above is today to share about shenzhen bliss for several kinds of green food plastic packaging printing ink, hope to be of help.
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