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How does UV printing use a beam of light to subvert tradition?
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Release time:
2025.04.09
Summary
In the modern printing industry, UV printing technology, with its unique advantages, is gradually becoming a star technology in the fields of packaging printing and high-end commercial printing. Today, we will delve into UV the core and applications of printing technology.
01
What is UV ink?
UV Ink is a special formulation of ink that can quickly cure to form a film under ultraviolet light. Its main components include:
Polymerizable prepolymer: Polymerizable prepolymer is an important component that determines the performance of the UV varnish coating. It is the most basic component in UV ink, the film-forming substance, and its performance plays an important role in the curing process and the properties of the cured ink film.
Monomer: Adjusts ink viscosity and improves printing performance.
Photoinitiator: A photoinitiator is a substance that can absorb ultraviolet radiation energy and undergo chemical changes to produce active intermediates with initiator polymerization capabilities. It is also a major component required by any UV curing system.
Colorant: Provides color, can be organic or inorganic pigment. Organic pigments are colored organic compounds, which are also divided into two categories: natural and synthetic. Synthetic organic pigments are commonly used now. Organic pigments have many varieties, a relatively complete range of colors, and superior performance to inorganic pigments. Inorganic pigments are colored metal oxides or some insoluble metal salts. Inorganic pigments are further divided into natural inorganic pigments and artificial inorganic pigments. Natural inorganic pigments are mineral pigments.
01
UV Curing Process
UV Curing is a photochemical reaction where liquid ink cures rapidly under ultraviolet light. The curing speed is affected by the following factors:
Light source intensity and wavelength: The higher the power density, the better the curing effect (common specifications for UV lamps are 40W/cm to 2000W/cm ).
Ink layer thickness: The thinner the ink layer, the faster the curing.
Light transmittance of the substrate: Directly affects the penetration depth of ultraviolet light.
01
UV Lamp Types
Mercury lamp: Traditional light source, suitable for large-area curing.
LED Cold light source lamp: Low energy consumption, long lifespan, gradually becoming mainstream.
Heat Dissipation Methods:
Fan type: Easy maintenance, but may cause thermal deformation.
Water-cooled type: Good heat dissipation effect, but complex maintenance.
02
Advantages and Limitations of UV Printing
Advantages:
Fast curing, improves production efficiency; environmentally friendly without VOCs ; suitable for a variety of substrates, including non-absorbent materials; high gloss, abrasion-resistant, corrosion-resistant; saves space, no need for long drying time.
Limitations:
Higher cost, equipment and ink prices are relatively expensive; Strict requirements for temperature and humidity; the curing process may affect ink adhesion; high equipment maintenance cost, requires regular lamp replacement. Color saturation is not as good as traditional inks on some materials.
03
Yuhong Pigments Inject Color into UV Printing
Yuhong Pigments has been deeply involved in the ink pigment field for many years and has developed and manufactured a number of high-performance pigments suitable for inks. For example, Pigment Red 146, Pigment Red 57:1, Pigment Yellow 14, Pigment Yellow 13, etc., which are characterized by bright colors, high tinting strength, good dispersibility, good fluidity, and excellent storage stability, making them ideal choices for high-quality ink production.
Yuhong Pigments adheres to customer supremacy, is equipped with advanced testing equipment, strictly controls product quality, and provides professional technical support and after-sale service.
Choosing Yuhong Pigments is choosing quality and peace of mind. Let us explore the mysteries of high-quality ink pigments together and create brilliant colors for printed matter! If you are interested in our products or have any questions, please feel free to contact us, and we will be happy to serve you!
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Yuhong Pigment Co.,LTD. It is a professional company that produces "Ninghong" and "Kaihong" brand series of organic pigments. It focuses on "easy dispersion" of pigments and is committed to the cause of pigments. Products are widely used in ink, plastic, rubber, paint, paint, paper, culture and education, printing, printing paste and other industries.
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