From the development of printing industry in developed areas of the future development track can be considered in China's packaging and printing industry to take the road of environmental protection is an inevitable trend, and the environmental protection of ink plays an increasingly important role.Although the stage has not yet established green ink or environmental protection ink discrimination standards, but the industry view is: those in the production and packaging and printing process less pollution, the health of human production and life and natural environment almost does not cause harm to the type of ink, it contains the following aspects of meaning.

1 significantly reduce the harmful components in the ink

2 significantly reduce the ink production and use of the process of the harm to the operator and the natural environment

3 It is beneficial to the recovery, treatment and reuse of packaging waste

In accordance with the above standards, in line with the development of China's flexible packaging printing industry, at this stage in the market environmental protection ink is mainly the following many types: no benzene alcohol-soluble ink polyurethane ink water-based ink (acrylic acid system) UV light curing ink soybean ink single solvent ink.

No benzene alcohol soluble ink: connection material for alcohol soluble polyamide resin, does not contain toluene, but contains a small amount of ketone solvents, more suitable for to be boiled flexible packaging printing, generally only for benzene soluble substitute plastic gravure table printing ink This kind of ink is no benzene packaging printing industry boom in the early launch of ordinary alcohol soluble plastic gravure printing ink.

Acrylic water-based ink: big advantage is that do not contain volatile organic solvents, the natural environment no pollution, no damage to the ink maker and packaging printing operation technical personnel health, the deficiencies are ink film with poor gloss, packaging and printing drying speed is slow, packaging printing eligibility weaker, integrated the above a few factors, couldn't completely replace soluble acrylic type of water-based ink Agent ink.

UV light curing ink :UV ink coating, UV light irradiation can be quickly dry curing, and the hardness of the ink layer is higher than other types of ink, with high environmental protection and energy saving solid content The advantages of low VOC content in high-speed inkjet printing and plate printing industry has great advantages, but in the flexible packaging gravure printing industry, compared with solvent ink,UV ink still has many deficiencies:First is UV ink price is relatively high, UV printing production line of the input is large, the demand is relatively harsh natural environment condition printing production workshop, this is also the UV printing ink is very difficult to mass in different packaging and printing industry to implement a major factors: second, UV ink in many printing substrate adhesion fastness and durability is not very ideal.

Soybean ink: soybean ink is made of soybean oil instead of traditional petroleum solvent. It has the advantages of low V0C content, green environmental protection and no harm to operators and the natural environment.Other areas of the newspaper industry, there have been packaging and printing enterprises began to use soybean ink soybean ink defects lies in the drying speed is relatively slow, mainly the use of dry newspapers and magazines published packaging printing, there are few successful cases in plastic flexible packaging.

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