Detailed explanation of the glazing process of the matte silk composite effect
Composite technology can also produce a matt silk effect. This contrast effect is achieved with an oil-based printing bright oil with very low surface tension.
Printing machine configuration:
Rapida 106-6 + glazing unit, extended two-page paper collecting device.
Printing unit 1-6: conventional ink roller
KBA Rapida 106
KBA VariDry drying device technology:
-2 UV inter-unit drying devices, each equipped with a 200-watt / cm lamp tube-Each printing unit is equipped with joint accessories for inter-unit drying devices-Extended delivery with infrared and hot air dryer Device-3 UV drying device polishing units placed at the end of each 200 watt / cm: cavity doctor equipped with anilox rollers, alternately used for UV / water-based polishing anilox rollers: cross-hatched, 80 lines / Cm, the absorption capacity is 17 cubic centimeters per square meter
Silk matte composite effect
Production technology:
1st printing unit: Pantone Cool Grey 9 Hybrid
2nd-5th printing unit: composite overprinting primary colors 6th printing unit: oil-based plus printing bright oil, part of the glazing unit drying device: working in the 2nd and 5th printing units Varnishing oil, full-length varnishing extended paper collection device: infrared and hot air drying device is turned off and placed in the last UV drying device to work
The composite ink is used in the first to fifth units, and is cured by the inter-unit drying device that is arranged behind the second and fifth printing units to work. The sixth printing unit is used to apply oil-based brightening oil whose surface tension is much lower than that of composite inks in a partially glazed manner. Subsequently, a full-scale UV gloss glazing is carried out on the wet printing varnish, and cured by the final UV drying device placed in the paper collecting device.
The non-image part of the glazed version used in the sixth unit together with UV varnish produces a high-gloss local finish. On the other hand, the wet printing bright oil carried in the image part of the printing plate interacts with the UV varnish. Subsequent UV curing in the take-up device immediately produced a very uniform matte effect in these areas. The registration system of the sixth printing unit ensures accurate registration of even very fine parts.
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