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Chapter 1: Dawn in the Laboratory

In the late autumn of 1959, in a small chemical research institute in Manchester, England, Dr. Alan Harvey was standing in front of his experimental table, holding a special dropper in his hand, slowly dropping a drop of transparent liquid into a glass container with an ultraviolet lamp. This droplet of liquid is the closest to the successful UV ink formula he has tried countless times.

The light source of UV ink plays a crucial role in the curing process of UV ink, and their selection directly affects the curing speed, curing quality, and production cost of the ink. The following is a comparative analysis of UV ink light sources:

Photoinitiators play a crucial role in UV ink by triggering photochemical reactions in the ink, thereby achieving rapid curing of the ink. The following is a detailed discussion on the role of photoinitiators in UV ink:

There are various additives required for UV ink printing, which play a crucial role in the manufacturing, use, transportation, and storage of ink. The following are some commonly used additives and their main functions in UV ink printing:

UV ink is widely used in various fields such as packaging, labeling, advertising, etc. due to its excellent curing speed, vivid color, and wear resistance. However, the issue of bubbles generated by UV ink during the printing process is a significant challenge that cannot be ignored. It not only affects the appearance quality of printed materials, but also poses a threat to the stability and efficiency of the entire production process.

Water based ink, as an environmentally friendly printing material, is gradually being widely used in various fields, including the printing of plastic woven bags. Plastic woven bags, as a common packaging material, are widely used in various industries such as agriculture, chemical industry, and building materials. The printing quality of these bags directly affects the appearance and brand image of the products. Therefore, exploring the application of water-based ink in plastic woven bag printing is not only in line with environmental trends, but also an effective way to enhance product competitiveness.

The ink transfer principle of flexographic printing machine is a relatively complex but efficient process, which mainly involves the transfer of ink from the ink hopper to the printing plate, and then to the substrate.

During the operation of water-based ink printing plants, wastewater containing water-based ink is generated, which needs to be treated appropriately to meet discharge standards. The following are sewage treatment equipment that water-based ink printing factories may need to equip:

Printing plants using water-based ink do indeed require wastewater treatment. This is because water-based ink wastewater has some special properties, such as high COD (chemical oxygen demand), high chromaticity, and difficult biodegradation. If directly discharged into the environment, it will cause serious pollution to water bodies, threatening human production and life as well as the ecological balance of nature.

There are various dilution methods for water-based ink, and the specific method used depends on the required dilution effect, printing requirements, and the characteristics of the ink itself. Here are some common dilution methods: