Features of solvent-free UV ink
Date: Aug 06 2024 From: Star Color
Solventless UV ink is a special type of ink, its biggest feature is that it does not contain volatile solvents, completely rely on ultraviolet (UV) irradiation for curing. This ink does not release harmful volatile organic compounds (VOCs) during the printing process, so it is extremely environmentally friendly. At the same time, solvent-free UV inks can quickly cure under ultraviolet irradiation to form a strong and durable printing layer with excellent color brightness, gloss and wear resistance.
Due to the fast curing speed of
solvent-free UV inks, the printing process is more efficient, which can significantly increase the production speed and reduce the time spent waiting for the ink to dry. In addition, its wide applicability also allows it to be applied to a variety of materials, including paper, plastic, metal, etc., to meet different printing needs. The following are the characteristics of solvent-free UV ink:
1. Curing characteristics
Instant curing: solvent-free UV ink can be cured rapidly under ultraviolet irradiation, and the curing time is very short, usually within 0.1 to 0.2 seconds. This fast curing property allows prints to be processed or stacked immediately without waiting for the ink to dry, greatly improving production efficiency.
Curing mechanism: After absorbing a certain wavelength of ultraviolet light, the photopolymerization initiator in UV ink will stimulate the formation of free radicals or ions, and then trigger the polymerization reaction, so that the monomer in the ink polymerization into a polymer, to achieve the curing and film formation of the ink.
2. Environmental protection
Solvent-free emission: Solvent-free UV ink does not contain volatile solvents during the printing process, so it does not produce harmful organic volatiles (VOCs), achieving zero emission and meeting environmental requirements.
Safe and harmless: Due to its solvent-free characteristics, solvent-free UV ink will not cause harm to human health during the printing process, nor will it pollute the environment, and is a green and safe printing material.
3. Printing effect
Bright color: solvent-free UV ink has good color saturation and color intensity, which can show bright and vivid printing effect. At the same time, the cured ink film surface is smooth and smooth, and the gloss is high, which improves the overall texture of the printed product.
High printing accuracy: UV ink can maintain stable ink viscosity during the printing process, and it is not easy to have problems such as gridlock and paste, thus ensuring the accuracy and clarity of printing. In addition, the characteristics of small dot deformation and stable ratio of color and connection material further improve the printing quality.
4.Applicability
Multi-material compatibility: solvo-free UV ink is not only suitable for traditional printing materials such as paper and cardboard, but also can be widely used in non-absorbent substrates such as aluminum foil and plastic film, showing its wide applicability.
Multi-process application: UV ink can be used for a variety of printing processes, such as offset printing, letterpress, gravure, screen printing, etc., to meet the needs of different printing enterprises. At the same time, its fast curing characteristics also make the printing process more flexible and efficient.
5. Economy
Cost effectiveness: Although the initial investment cost of solvent-free UV ink is high, its efficient production speed and environmental protection make it possible for enterprises to obtain significant economic benefits in long-term use. In addition, due to the fast curing speed, printed products can be immediately processed or stacked, reducing storage costs and time costs.
Saving resources: solvo-free UV ink does not produce harmful waste and by-products in the printing process, reducing resource consumption and environmental pollution, in line with the concept of sustainable development.
Solven-free UV inks of Huizhou StarColor Technology Co., Ltd. are widely used in various printing fields, especially in food packaging, medical packaging, hygiene packaging and other aspects have significant advantages. For example, it can be used for the printing of paper cups, paper plates, sanitary napkins, diapers, ice cream packaging, food grade cake paper, napkins, labels, paper bags and corrugated boxes. Products passed ISO9001:2015 quality system strict control, in line with a number of domestic and foreign standards and directives, such as EN71 Part3, ASTM F963-07, 94/62/EC, ROHS, FDA, REACH and so on.
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