UV Crystal Ink
UV Crystal Ink can be printed by low mesh (40 mesh, 60 mesh, 80 mesh) screen printing, and after UV light curing, it can get bright and transparent, smooth and flexible with strong three-dimensional sense of varnishing effect. Add 1%~5% of laser sheet, colorful sheet and metal sheet in the crystal ink, stir evenly for screen printing, can get metal flashing effect.UV crystal ink is suitable for high-grade cigarettes and wines, calendars, book covers, greeting cards and other packaging printing.
Crystal ink is colorless and tasteless, crystal clear, no diffusion of lines after printing, transparent like crystal. Printed graphics have a three-dimensional transparent crystal-like effect, relief-like sense of art, elegant and chic. If you add an appropriate amount of laser sheet, glitter, special effects of metal pigments, you can get a variety of three-dimensional flashing decorative effects. The ink can be widely used in all kinds of crystal signs, decorative glass, book covers, calendars, crystal paintings, tobacco and wine boxes, signs and Braille and other commodities printing.
Crystal ink is generally made of special UV resin and additives made of ultraviolet curing ink. It is colorless, odorless, crystal clear, non-volatile, non-yellowing after curing, non-spreading lines after printing, transparent like crystal. Crystal ink has hard type and flexible type, the appearance of ink is transparent thick paste, if you add the appropriate amount of glitter flakes, special effects of metal pigments, you can get a variety of three-dimensional scintillation and metal decorative effects. Printing screen must be a low mesh number of thick film screen version, otherwise the effect of three-dimensional crystal can not be achieved. Such as the use of low mesh (40 ~ 80 mesh) thick film screen printing, you can get a high raised, three-dimensional transparent crystal-like effect, so that the printed matter has a relief-like artistic sense of the graphic, elegant and chic. Printing as much as possible using the original ink printing, different series and brands of ink generally can not be mixed with each other, in order to avoid adverse reactions, ink should be fully stirred before use. When the temperature is low, it will become thicker, such as printing difficulties, you can add a small amount of special crystal ink thinner mixing after printing, do not feel free to use other thinner, otherwise it will affect the printing quality of the graphics and three-dimensional effect.
How formulators usually evaluate this photoinitiator topic
When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.
- Match the package to the lamp first: mercury lamps, UV LEDs, and visible-light systems can rank the same photoinitiators very differently.
- Check depth cure and surface cure separately: a film that feels dry on top can still be weak underneath.
- Balance yellowing with reactivity: the strongest deep-cure route is not always the best commercial choice if color or migration risk becomes unacceptable.
- Use the final formula as the benchmark: pigment load, monomer package, and film thickness can all change the apparent ranking of the same initiator.
Recommended product references
- CHLUMINIT 819: Useful when a formulation needs stronger absorption and deeper cure support.
- CHLUMINIT 1173: A practical comparison point for classic short-wave UV initiation.
- CHLUMINIT ITX: A useful long-wave support route in many printing-ink packages.
- CHLUMINIT CQ: A direct reference for visible-light and color-sensitive curing discussions.
FAQ for buyers and formulators
Why are blended photoinitiator packages so common?
Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.
Should incomplete cure always be solved by adding more initiator?
Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.
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Quick answer: In most UV systems, photoinitiators are selected by balancing wavelength fit, through-cure, color control, and line speed. Buyers usually compare a blended package instead of one isolated product.
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