The gravure printer is the simplest printing method. The gravure cylinder can be used repeatedly. The number of prints per plate can reach 3 million to 4 million prints. It is characterized by stable functions, wide use of inks and substrates, and greater operation than offset printing. Flexo printing is simpler.
Now, following the success of ink manufacturers in the development of environmentally friendly inks such as alcohol-soluble inks and water-based inks, gravure printing has advanced to the greatest extent. Together in the field of platemaking, we are constantly seeking alternative materials for chrome-plated steel rolls and copper rolls, which will further reduce the cost, improve the economic benefits of gravure printing, shorten the adjustment time before printing, and eliminate the shortcomings of short-form printing. Together, with the adjustment of the price of domestic high-speed gravure printers, the cost is continuously decreasing, and eventually the market share of gravure printing will continue to increase. Gravure printing will surely become the preferred method for high-quality printing.
The great situation that gravure has developed to this day is composed of the joint efforts of many occupations: such as the selection of new skills in equipment making, inks, solvents, platemaking occupations, and the implementation of new skills in printing occupations. Striding forward.
1. Plate making
(1) Fully automatic gravure cylinder electroplating process.
(2) Promptly implement non-film engraving skills: e-beam engraving and laser engraving.
(3) Achieve rapid proofing with graphic digital database.
2. Substrate: PVC, PP plastic labels, flexible packaging of PET, PE and various composite materials; coated paper / cardboard soft and hard cigarette packs; general wet strength paper / aluminized paper / aluminum foil labels and textile printing and dyeing.
(1) Gravure paper label: the major domestic tobacco factories and tobacco packaging and printing factories basically use imported gravure printing machines to print cigarette pack cardboard and coated paper. Cigarette packs represent the highest level of the domestic printing profession, and the advantages of gravure printing are abundant As a result, high-speed gravure printers are called "money printers". Under the effect of the competition mechanism, the professional cigarette pack printing factory turned its attention to the growing beer market. Its color separation, ink adjustment, overprinting, and die cutting were all controlled by the computer. Nothing less.
(2) Gravure flexible packaging: The quality of the outer packaging of the product is dictated by the consumer's motivation to purchase the product. Gravure printing still dominates in the field of flexible packaging composite materials such as plastic bags, plastic boxes, paper-plastic, aluminum-plastic and aluminum-coated films. The large-scale gravure printing machine can complete the inline processing of composite, cross-cutting and die-cutting, which is suitable for the long-term mission of large quantities, and also promotes the widespread use of various composite materials. Future gravure skills will use a complex environment design, with reliable functions, simplified structure, and convenient operation. The product replacement time is short, and the production cycle is shorter. Equipment trolleys are becoming more and more common on gravure printing machines, and have multiple functions such as wet, extrusion, and dry methods. Saving capital, protecting the environment, reducing costs, and showing the appearance are the main trends of the development of composite packaging films in the future.
(3) Gravure aluminum foil: Ultra-thin aluminum foil is a composite substrate that is not short of flexible packaging. Because the surface is silver-white, the intense metallic luster occurs after gravure printing. The cost is low and the product can be distinguished. Printing in foreign countries is dominated by gravure printing, and 100% in China uses gravure printing.
(4) Gravure carton: use high-speed, high-precision, wide-format paper gravure printer for decoration paper and tipping paper for coating, printing, glazing, and rewinding as facial paper to corrugated production line to make cardboard. The picture is exquisite, the color is full, and the ornamental is strong. The carton is made of high compressive strength, wear resistance, moisture resistance and so on.
2. Ink: Customers not only pay attention to exquisite pictures, but also pay more attention to environmental protection requests for printing. In the gravure ink, it is rich in many volatile organic solvents, accounting for almost 50% of the composition of the gravure ink, during which low-boiling, high-volatility solvents such as xylene, toluene, ethyl acetate, and methyl ethyl ketone are rich. Aromatic hydrocarbons are both toxic and flammable, which is not conducive to environmental protection, health and safety. Over the years, with the use of efficient solvent recovery systems, pollution has been relatively reduced. The rapid implementation of water-soluble gravure inks and electron beam curing inks at home and abroad has also established a display channel for gravure printing. This type of ink does not contain volatile organic compounds, which meets the requirements of environmental protection. The development of new optimized UV inks can be applied to the printing of plastic materials, as well as printing of non-absorbent paper and cardboard.
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