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Printed materials can enhance the aesthetics of prints by using bright glossy materials or matte matte materials. Bright surfaces can give prints a high degree of clarity and gloss. Fog surfaces have no bright and dazzling impression. Printed colors. "Poster" is a print media that disseminates information to the public in a large amount. The expression of glazing changes the visual appeal of the poster, increases its visual effects, attracts more attention, and protects the poster from getting wet with rain. Prevent scratches and increase the value of posters!
Various types of glazing methods and characteristics (1) All types of glazing methods can be divided into bright surfaces and matte surfaces - bright surfaces include:
(1) Lubricating oil: The operating mode of the glossy oil is the one-time printing of the connection between the printing machine and the coating machine, and it can also be used as the second coating mode of the non-wired connection. As with printing inks, no special equipment and operating techniques are required. Its advantages are easy operation and low cost. But disadvantages can cause air pollution, odor, and time.
(2) PVA glazing: using a coater and a high temperature calender, high-temperature baking was performed to volatilize the solvent to harden the PVA. The advantage is that the cost is lower and cheaper. In the process of drying, formaldehyde will release toxic substances such as formaldehyde, which will greatly harm the health of operators.
(3) Film lamination: The adhesive film of PP bright surface, PP matte surface, rigid PVC, PET, etc. is coated with an adhesive, dried and then pressed together with a printed matter to complete the lamination. The glossiness and abrasion resistance of the film are the best in all kinds of glazing, but the expensive paper that is processed by the film cannot be easily recycled and cannot be recycled. It does not meet the requirements of environmental protection!
(4) UV glazing: The technology of fast drying applies the acid-base varnish with a photosensitive substance to the glazing material. After ultraviolet ray irradiation, photopolymerization chain reaction takes place instantaneously to form a glossy and transparent surface morphology. The advantages are high gloss and good abrasion resistance, but the disadvantages are that UV polishing is toxic, there is irritating damage to the human skin, eyes and respiratory system, the equipment is expensive, and it is not easy to reconstitute pulp to make recycled paper.
(5) Waterborne coating: Water is the basic volume, styrene or acrylic is the solute, and weakly inert solvent is the surfactant. The liquid water-based glaze is in the form of an emulsion. After the coating is dried and hardened, it is a clear acrylic film. Its advantages are low price, no toxicity, no harm to the operator's health, high gloss, good abrasion resistance, quick drying effect, easy re-slurry decomposition, manufacture of recycled paper, and no environmental pollution! Fog surface light: film adhesive: It is the PP glossy surface, PP matte surface, hard PVC, PET ... ... and other adhesive film coated with adhesive, dried and printed with a hot press to complete the fit, After a special syrup treatment into a matte effect.
(B), various types of polishing characteristics of the comparison table light type characteristics and bright light brightness ordinary, poor wear resistance PVA
Brightness, poor abrasion resistance UV
Good brightness, good abrasion resistance, oily PP
(Bright and Fog) Good Brightness, Good Abrasion Resistance, Solvent Containing UVPP
(Bright and Fog) Good Brightness, Good Abrasion Resistance, Good Adhesion to Waterborne PP
(Bright and Fog) Excellent Brightness, Good Abrasion Resistance, Good Adhesion to Waterborne PP (PU Glue)
Excellent brightness, good abrasion resistance, excellent adhesion, especially for long fiber paper (to be continued)
Polishing function and characteristics in printing
The function and purpose of polishing is to apply a protective layer on the surface of the paper after the printing is completed. The purpose is to protect the imprint from being scratched and to increase the abrasion resistance of the printed material. After the light is shining on the surface, the entire printed material will be glossy, and the light on the surface of the fog will produce a protective film of mist and fog. Both of them will increase the water resistance of the printed material and protect it from moisture and strengthen the paper surface.