Precautions for UV glazing of the hottest film coa

2022-08-12
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Precautions for UV glazing of film coated products

the so-called UV glazing of film coated products is the method of coating the surface of printed matter and then printing varnish once or twice in the overall remanufacturing process or locally, so as to obtain a bright UV varnish film on the surface of printed matter. UV varnish on the coated products can enhance the light resistance of the ink and improve the gloss and three-dimensional sense of the printed matter. Forming a strong contrast. Either full plate glazing or partial glazing can be used

problems that should be paid attention to in production

the following problems should be paid attention to when UV glazing film coated products

(1) for local UV glazing, silk printing is selected, because the ink layer thickness can reach 30 ~ 100 um, and the ink layer thickness of one printing can reach 20um. Using it for local glazing, the surface of the product produced has a three-dimensional feeling, with clear layers and high precision. Gravure printing, offset printing and flexography 9. The shell of the experimental machine must be safely grounded, and the printing effect is worse

(2) reasonably control the surface tension of film material and varnish to make them firmly combined

(3) the thickness of varnish coating should be uniform

(4) in the process of silk printing, the overprint should be accurate, and the general overprint error should be less than 1mm, otherwise the varnish scraping printing is easy to produce a large deviation on the printed and film coated pictures and texts, which cannot achieve the effect of highlighting the local part

(5) the plastic granulator industry should constantly improve the technical level and control the curing speed and temperature of UV varnish. The curing speed is generally 100-300m/min, and the curing temperature is generally about 20~c

(6) silk printing varnish coating amount generally reaches 4 days/m2 to form a very three-dimensional bright effect

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