UV is the abbreviation for Ultraviolet Rays, which means ultraviolet light. Ultraviolet (UV) is an electromagnetic radiation that is invisible to the naked eye and is beyond visible purple light, with wavelengths ranging from 10 to 400nm. Ink characteristics: UV Curing UV curable ink (with the action of a photoinitiator) is a brand new green technology developed in the 1970s, which began to flourish worldwide 10 years ago, and related products and equipment were extensively produced and manufactured. Non toxic ink that meets the EU RoHS standard does not contain volatile organic compounds (VOCs) such as cadmium, lead, mercury, hexavalent chromium, polyodorous biphenyls, and polyodorous biphenyl ethers. It also does not contain commonly used aldehydes in indoor decoration, causing little environmental pollution and no harm to human health. It has a fast curing speed, saves energy, stabilizes the quality of the curing product, and has good adhesion. UV cured ink combined with inkjet equipment is suitable for various hard printed materials. Weathering resistance: When placed indoors, the color can remain unchanged for twenty years. Outdoor placement, the color of direct sunlight can remain unchanged for four years. Adhesion: After 100 grid testing, the adhesion of various materials meets the standards.

Advantages of UV ink

1. No volatile organic compounds

Most UV products contain little or no organic solvents, and there will be no solvent erosion or damage to the printed matter, which will not pollute the human body and environment.

2. Suitable for non paper substrates

It can be printed on ordinary substrates, as well as non absorbent materials such as film, synthetic paper, metal or plastic.

3. Suitable for immediate post-press processing

After being irradiated by ultraviolet light, it can quickly solidify.

4. Less ink usage

Because UV ink does not contain solvents, only 1/3 to 1/2 of the traditional ink dosage is required to achieve the expected effect.

5. Strong color matching ability

By adjusting the viscosity, tone, and brightness of the ink, a rich variety of colors can be produced. By mixing two or more basic colors, multiple desired colors can be obtained.

6. Opacity is easy to control

Pigments or pigments can be added to the extended base according to standard proportions to achieve the desired brightness.

7. UV ink can undergo special effects such as icing, refraction, frosting, and wrinkles under certain printing conditions.

Application fields of UV transfer printing ink

1. Graphic screen printing

The typical application of conventional graphic screen printing is the printing of poster display racks, posters, and shopping guide signs.

Advertising materials, packaging box printing, post press finishing, and polishing are also included in this colorful application field. Therefore, UV ink is widely used in the field of graphics.

The typical features of this new type of ink technology are good screen stability and color accuracy, which can ensure accurate color reproduction of repeatedly printed live parts.

The application in the graphics field may include a series of UV polishing auxiliary processes, which can be used for selective or entire area finishing, or as a protective glossy surface to improve the durability of outdoor products.

2. Industrial screen printing

There are many types of this application, currently manufactured by large manufacturers "in the factory" or through suppliers to industrial related applications, such as printing contractors.

Due to the continuous demand for new technological solutions for special tasks, industrial screen printing will continue to be applied in the future, often providing the best solution. Here, there will be many applications of UV ink, and adopting new technologies and solutions is a decisive factor for future development and success.

In the field of industrial applications, people's demand for productivity, environmental protection, and application security will also continue to grow.

3. CD

This is an extremely important application field that has achieved rapid development in a short period of time. CDs include music and digital storage media, such as CDs, CD-ROMs, CD-Rs, and DVDs. Screen printing is very suitable for this complex and diverse application field.

For example, in long plate printing, the best printing quality for four color screen printing ink is dot enlargement, or high edge clarity of negative image text, which have become key features because the quality awareness of end users has increased.

Currently, optical discs are specifically printed using UV cured ink systems. They can meet the requirements of mechanical technology and ensure necessary operational reliability. UV ink can reach an operating speed of at least 100 discs per minute and ensure the lowest possibility of interaction between the ink and the information layer of the disc.

4. Packaging

Show what's inside outside. To ensure that product information, company logo, etc. are directly printed on bottles, pipes, and containers of various materials, this is a multiple task of UV screen printing.

The requirement for this application is high opacity, especially on colored substrates, where the surface gloss gives an attractive appearance; The product has excellent wear resistance. Of course, in various printing materials, such as organic glass, PE, PP and PVC, or polyester, the good softness of the ink layer is important. Previously, solvent based inks were mainly used in this field, but now environmental friendliness and faster UV technology dominate.

This part of the application also requires highly reactive ink, which can be used on machines with speeds up to 100 revolutions per minute.

5. Label

Label printing and packaging are closely related because labels provide unique, separate, and informative advertising, explanation, and explanation of the content, application, and origin.

In addition, a properly designed label can further provide an attractive visual appearance, thereby enhancing the value of the product.

Generally speaking, labels are usually produced using high-speed combination rotary printing machines. In addition to letterpress and flexographic printing machines, there is also one or more screen printing stations with a speed of 100 meters per minute. In this combination, UV technology has real advantages, as the highly reactive and fast curing ink system is the foundation of this innovative production process.

Good opacity on dark substrate materials, high gloss or matte ink, soft ink film, and mechanical resistance make UV screen printing indispensable for label printing. Other strengths include special effects such as fluorescence, bronze, pearlescent, and security coding.

6. Documents

The production of checks, credit cards, and phone cards, as well as clubs or exquisite cards, not only uses various synthetic materials, but also uses different printing methods. Therefore, screen printing ink must be compatible with other printing methods such as offset printing ink. They are matched with UV cured glossy, matte, or structurally glossy inks for screen printing. By mixing various UV bright oils, the produced surface can have a special effect.

However, the widespread application of UV ink in this area is only limited to surface printing due to improper lamination, which means that it is not possible to produce sufficient adhesive properties between the ink film and the surface layer