Ways to Digitally Enhance Printed Matter Surfaces

Abstract

The invention relates to a method for realizing different post-press processing effects on the surface of printed matter by using a variable data ink-jet printing method. The method of the present invention includes the following steps: 1) printing synergistic ink on surface A to form synergistic graphics; 2) drying the synergistic graphics; Pressing to form a complex; 4) UV curing the complex; 5) separating the complex. The method of the present invention is easy to operate, environmentally friendly and safe, and the process is simple. It is also suitable for absorbing or non-absorbing substrates, and can meet the needs of hot stamping on the surface of printed matter, local UV glazing, 3D grating, laser, embossment, shiny particle decoration, etc. Post-press digital enhancement needs.

Description

technical field [0001] The invention relates to a method for digitally synergizing the surface of a printed matter, that is, using a variable data inkjet printing method to realize different post-press processing effects on the surface of a printed matter, so as to increase the attractiveness and shelf expressiveness of the product and increase its added value. Background technique [0002] Just as the invention of the steam engine is the symbol of the first industrial revolution and electricity is the symbol of the second industrial revolution, digital technology is undoubtedly the symbol of the third industrial revolution. The wide application of digital technology is changing the whole world, including printing which has a history of thousands of years. [0003] Counting from the world's first digital copier using the principle of electrostatic imaging in 1938, the application of digital technology in the printing field has a history of 80 years. But digital printing was...

AI Technical Summary

Problems solved by technology

[0011] 1) Gaudi's stunning post-press effect is obvious to all, but it is only limited to smooth, non-absorbent materials, and it can't do anything for absorbent materials, because low-viscosity inks will be quickly absorbed by absorbent materials and cannot accumulate On the surface, the 3D effect cannot be formed, and the hot stamping effect cannot be realized;

[0012] 2) The clogging problem of 100% solid content pure UV ink cannot be ignored, and the leakage of extremely small amounts of UV ultraviolet light in the curing module will easily cause the risk of clogging, thus damaging the nozzle;

[0013] 3) Pure UV ink without solvent volatilization is considered to be green and environmentally friendly, but it does not mean that it is operator-friendly. The reason why pure UV ink can reach a very low viscosity of 10mpas is because it adds a large amount of active diluent itself. The reactive diluent is used to reduce the viscosity of the prepolymer in the ink and also participates in the curing reaction. The smaller the molecular weight of the diluent, the lower the viscosity, the more obvious the diluting effect, but the lower the molecular weight, the greater the volatility and the greater the toxicity. A certain diluent The LD50 value reaches 0.21ml / kg (the strong carcinogen benzene LD50=3306mg / kg), which can be said to be quite toxic;

[0014] 4) Workers in the pure UV ink printing workshop often use acetone to scrub the nozzles. Consult relevant information. Acetone is a second-class precursor chemical that is regulated by the state. It will violate the criminal law to purchase, store and use it without permission;

[0015] 5) Pure UV ink is highly corrosive and highly swellable to ordinary plastic materials. Therefore, the nozzles, pipes, and ink tanks must be corrosion-resistant, and the process is complicated and the equipment is expensive.

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