What are the advantages of high temperature inks?

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.

How to choose a good high temperature ink is also a key issue, the current addition of a new high temperature ink – UV hybrid high temperature ink, this high temperature ink is very meaningful to the printing industry, you can use this high temperature ink on the press without replacing the blanket or inking roller. If a press is set up for UV high-temperature inks, it can also run regular high-temperature inks. This is a great improvement for printers because of its extreme flexibility.

 

The biggest advantage of this UV high temperature ink system is the ability to do inline UV coating without having to lengthen the transfer process to complete a water-based coating. These improvements come primarily from the additional conditions of UV curing, and the price will increase as a result, but the researchers predict an eventual increase in productivity. They expect that hybrid technology will continue to improve, increasing product quality and reducing printing costs. Single-fluid high-temperature inks and hybrid high-temperature inks are two of the more talked-about improvements, but some of the larger high-temperature ink companies are engaged in research into other products. Energy-curing high-temperature inks are a fast-growing segment of the high-temperature ink industry, and electron beam (EB) technology, in particular, will have a place in the market in the future.

 

In the printing process, no matter what kind of printing, and no matter multi-color or monochrome printing, the first problem encountered before printing is the ink color blending, so that it adapts to the needs of the product being printed; no matter how bright the ink, if the operator does not know some ink performance and color matching knowledge, mixed out of the ink can not achieve a satisfactory appearance and the level of quality it should be. To this end, Longchang Chemical has compiled a list of issues that should be noted in the blending of printing high temperature ink colors for reference:

 

First, carefully observe the color sample, pay special attention to observe the printed substrate, from the substrate rough and smooth, the degree of reflection to choose the ink

For example, high-temperature ink printing on smooth, highly reflective aluminum plate or cans, choose a high degree of transparency of the ink will help greatly enhance the high-temperature ink metallic luster. When choosing the high temperature ink required for color matching, avoid mixing too many high temperature inks as much as possible and try to use high temperature inks that are close to the standard color and made from a single pigment. The more color ink used for color matching, the farther away from the standard color, the worse the brightness, the more mixed out of the color matte degree, it is impossible to borrow color matching to modulate the original color.

Second, pay special attention to the high temperature ink coloring power

If the concentration of high-temperature ink selected is not high enough, no matter how to mix and match, but also can not reach the standard color concentration. Need to add white and black ink, special attention should be paid to the amount added and the accuracy of the weighing. In all high-temperature ink, white ink coverage is particularly strong, adding too much, will not only dilute the color, but also prevent the degree of reflection of the substrate. When making light-colored high-temperature ink, you should judge from the degree of light transmission of the ink film how much white ink or ink blending oil (watering down agent) should be added for color mixing. It is absolutely not allowed to use solvents (diluted water) for lightening colors. Adding too much solvent will not only affect the printing performance, but also damage the structure of high-temperature ink, resulting in the separation of pigments and resin oil, precipitation or greatly reduce the gloss of high-temperature ink.

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A practical selection route for photoinitiator-related projects

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 TPO-L: A strong low-yellowing reference for LED-oriented UV systems.
• CHLUMINIT 819: Useful when a formulation needs stronger absorption and deeper cure support.
• CHLUMINIT ITX: A useful long-wave support route in many printing-ink packages.
• CHLUMICRYL IBOA: A strong low-viscosity monomer reference when hardness and good flow both matter.

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.