In the modern printing industry, high-gloss offset printing inks occupy an important position due to their excellent gloss, color expression and printability. It not only satisfies people's pursuit of beauty and quality in prints, but also plays a key role in many fields.
1. The unique advantages of high-gloss offset printing inks
The most striking feature of high-gloss offset printing inks is that they can give extremely high gloss to printed products. When light hits the surface of a printed product, high-gloss inks can reflect the light like a mirror, giving the printed pattern a bright, vivid visual effect. This feature is particularly important in the field of packaging and printing, such as cosmetics, high-end tobacco and alcohol, electronic products and other packaging, high-gloss printing effect can greatly enhance the grade and attractiveness of products, stimulate consumers' desire to buy.
In terms of color performance, high-gloss offset printing ink has a wide color gamut and can accurately restore a variety of colors. Whether it's a vivid red, a deep blue or a delicate green, it can be vividly displayed on the print with high-gloss inks. This is indispensable for advertising posters, art albums and other printed materials that require high color reproduction. Moreover, after the high-gloss ink is dried, the saturation and stability of the color can still be well maintained, and it will not fade or change color for a long time, ensuring the lasting beauty of the printed matter.
From the point of view of printability, high-gloss offset printing inks have good fluidity and transferability. In the offset printing process, the ink can be evenly distributed on the printing plate and smoothly transferred to the blanket and substrate surface to form a clear and complete picture. At the same time, it has good compatibility with various paper, plastic film and other substrates, and can achieve high-quality printing on different materials, which broadens its application range.
2. Analysis of key components
Resin
Resin is one of the key components of high-gloss offset printing inks, which acts as a connecting material, bonding other components such as pigments and fillers, and giving the ink good film-forming properties and gloss. Different types of resins have a significant impact on the performance of inks. For example, rosin-modified phenolic resins have good printability and gloss, but relatively poor water resistance; Acrylic resins, on the other hand, have excellent water resistance, chemical resistance, and gloss retention, and are often used in applications where high quality requirements for printed matter.
Pigments
Pigments determine the color of the ink. The pigments used in high-gloss offset printing inks usually have high purity, high tinting strength and good dispersion. Organic pigments have become commonly used pigments for high-gloss inks due to their bright colors and good lightfastness and solvent resistance, such as phthalocyanine blue, benzidine yellow, etc. Inorganic pigments have high hiding power and chemical stability, and play an important role in some special color inks. In order to achieve a better glossy effect, the particle size of the pigment also needs to be tightly controlled, and the smaller particle size helps to improve the gloss and color vividness of the ink.
Additives
Although additives account for a small proportion of inks, they have a crucial impact on the performance of inks. The desiccant can accelerate the drying speed of the ink and improve the printing efficiency; The dispersant can help the pigment to be evenly dispersed in the binder, prevent the pigment from agglomerating, and improve the stability of the ink and the printing quality; Plasticizers can improve the flexibility and ductility of inks, so that the printed matter is not easy to crack during folding, bending and other processing processes. In addition, there are special additives, such as defoamers, leveling agents, etc., which can further optimize the printing performance of the ink.
3. Production process
The production of high-gloss offset printing ink is a complex and delicate process, which mainly includes batching, dispersion, grinding, ink mixing and packaging.
In the batching process, according to the formula of the ink, various raw materials are accurately weighed, including resins, pigments, additives, etc. This step requires strict control of the proportion of raw materials to ensure that the performance of the ink meets the requirements.
The dispersion process is to evenly disperse the pigments in the connecting material to form a preliminary ink system. Usually a high-speed mixer or disperser is used for dispersion, and the pigment particles are fully dispersed in the connecting material through strong mechanical stirring.
Grinding is a key step in the production of high-gloss offset inks, the purpose of which is to further refine the pigment particles and improve the gloss and print quality of the ink. Commonly used grinding equipment includes three-roller grinder, ball mill, sand mill, etc. During the grinding process, parameters such as grinding time, temperature and pressure need to be controlled to achieve the best grinding results.
The ink mixing link is to adjust the color, viscosity, drying speed and other properties of the ink according to the needs of customers. By adding the right amount of colorant, solvent or additive, the properties of the ink can be achieved to the ideal state.
Finally, the quality-tested inks are filled into packaging containers ready to be released to the market.
4. Fields of application
Packaging Printing
As mentioned earlier, packaging printing is one of the main application areas of high-gloss offset printing inks. From delicate gift boxes to stylish daily necessities bags, high-gloss inks can add a unique charm to packaging. It can highlight the brand image of the product, attract the attention of consumers, and play an important role in the fierce market competition.
Advertising printing
Whether it is outdoor large billboards, posters or indoor brochures and leaflets, high-gloss offset printing inks can make the advertising content more eye-catching and vivid. The high-gloss printing effect can enhance the visual impact of the advertisement, effectively convey the advertising message, and improve the publicity effect of the advertisement.
Publishing and printing
In the field of publishing and printing such as art albums and high-end book covers, high-gloss offset printing inks can perfectly present the details of pictures and texts, so that the printed matter has higher artistic value and ornamentality. It brings a better reading experience to readers and also satisfies the publishing industry's pursuit of high-quality printing.
5. Trends
With the continuous improvement of environmental awareness, environmentally friendly high-gloss offset printing inks have become an inevitable trend of development. R&D personnel are committed to developing low volatile organic compound (VOC) emissions, degradable ink products to reduce environmental pollution. For example, water-based high-gloss offset printing ink is an environmentally friendly ink with broad development prospects, which uses water as a solvent to replace the organic solvent in traditional inks, greatly reducing VOC emissions, and also has good printing performance and gloss.
The rise of digital printing technology also presents new challenges and opportunities for high-gloss offset printing inks. In order to meet the needs of digital printing, high-gloss offset printing inks need to be continuously innovated, improve compatibility with digital printing equipment, and develop ink products suitable for digital printing processes.
In the future, high-gloss offset printing inks will continue to develop in the direction of environmental protection, high performance and multi-function, continue to meet the growing needs of the printing industry, and bring more exquisite and environmentally friendly prints to people. It will continue to shine in the field of printing and become an important force to promote the progress of the printing industry.
6. Recommendation of the same type of products
Medium Quick-Drying Offset Ink
Ordinary Economical Offset Ink