Background technology:
Printing field, as printing inks, especially gravure printing inks will use more volatile organic solvents, the atmosphere, water resources and other serious pollution, not only directly affect the production staff and print users of the health and safety, but also to the surrounding environment system caused serious pollution, affect people's ecological environment. As people on the water-based ink research found that water-based ink in environmental protection, safety, health and other aspects of the obvious advantages, not only can reduce the emissions of organic volatile (VOCs), prevent air pollution, improve the working environment, reduce the incidence of fire, but also improve the printing quality, reduce the residue of printing solvents, reduce production costs, etc. To become the green printing material used in the future. But because the water-based ink drying efficiency is low and the drying energy consumption is high, as well as has not specialized with the water-based ink matching printing equipment, the production efficiency low question, causes the water-based ink application and the promotion to be limited, restricts the water-based ink the development.
Technical implementation elements:
In order to solve the shortcomings of existing technology, the invention provides a gravure printing process for water-based inks, which solves the problems existing in gravure printing of water-based inks and makes the application of water-based inks in gravure printing feasible. To achieve these objectives, the invention provides a gravure printing process of water-based ink, which adopts the gravure roll of Laser electric engraving, the net cable of the set roll is 80-110 lines, the needle angle is 130-150 degrees, and the level version of the printing process of the set roll is 24-28u, and the field spot color plate depth is 28-34u. The invention uses water-based ink in gravure printing, and the diluent for water-based ink is purified water, its volatilization rate is slower than solvent, but the coverage rate is high, the online rate is good, adjust the gravure printing process roll parameters, through the increase of the number of screen roller and needle angle number, while reducing the printing process of the level of depth and field spot color version depth, With the adjustment of the process parameters, the printing of water-based ink is realized, and the drying of water-based ink is significantly accelerated under the condition of traditional oven hot air drying, which can guarantee the printing quality and printing speed and reduce the production cost. The technology in the water content of water-based ink on the premise of a significant increase in product printing, and no need for gravure printing equipment to make a major transformation to solve the water-based ink in gravure printing application of the constraints, and promote the development of water-based ink printing. As a qualification for the above technical scheme, the material hardness of the roll is 800-900HV. Further limit the roll of material hardness, you can choose to increase the chrome content of the roll material, get the hardness of the roll, to prevent water-based ink in the water to roll erosion, optimize the water-based ink gravure printing process printing quality and printing speed. As a qualification for the above technical scheme, the process comprises the following steps: A, Equipment printing press: Set the roll of the network cable and needle angle, in order to install the roll in sequence in the printing press...
