Reasons for poor adhesion of UV ink

Date: Sep 14 2024 From: Star Color

In today's printing industry, UV ink is widely popular for its excellent drying speed, bright colors, and high glossiness. However, sometimes the adhesion of UV ink on specific materials is insufficient, which becomes a problem that troubles many printing companies.

Analysis of the reasons for poor adhesion of UV ink

Improper surface treatment of substrate:
The cleanliness, roughness, and polarity of the substrate surface directly affect the adhesion of UV ink. If there is grease, moisture, or impurities on the surface of the substrate, or if proper pre-treatment is not carried out, it will lead to a decrease in UV ink adhesion.

Ink formula issue:
Improper proportions of resin, monomers, photoinitiators, and other components in the formulation of UV ink, or incompatible resin and substrate selection, can also affect the adhesion of the ink.

Insufficient curing conditions:
Improper control of parameters such as light intensity, light duration, and light source wavelength during UV curing may lead to incomplete curing of UV ink, thereby affecting its adhesion.

Environmental factors impact:
Changes in environmental conditions such as temperature and humidity may also affect the adhesion of UV ink. For example, high humidity may slow down the curing speed of ink and reduce adhesion.

Reasons for poor adhesion of UV ink

Solution to poor adhesion of UV ink

Optimize substrate surface treatment:
Ensure that the surface of the substrate is clean and free of impurities. Cleaning agents or wiping cloths can be used for cleaning.
Proper pre-treatment of the substrate, such as grinding, corona treatment, or primer treatment, is carried out to improve its surface roughness and polarity, and enhance the adhesion of UV ink.

Adjust ink formula:
Communicate with ink suppliers to adjust ink formulations based on substrate characteristics and printing requirements, ensuring compatibility between resin and substrate.
If necessary, an appropriate amount of adhesion promoter or tackifier can be added to improve the adhesion of UV ink.

Improve curing conditions:
Ensure that the UV curing equipment is in good working condition, regularly inspect and maintain the light source equipment.
Adjust parameters such as light intensity, light duration, and light source wavelength based on ink characteristics and substrate thickness to ensure sufficient curing of UV ink.
When necessary, dual curing or multi curing systems can be used to improve the curing effect.

Control environmental factors:
Maintain stable temperature and humidity in the printing workshop to avoid fluctuations in temperature and humidity that may affect the adhesion of UV ink.
In special environments (such as high humidity environments), dehumidification measures can be taken to ensure that the printing environment meets the requirements.

Post processing technology:
For products with extremely high adhesion requirements, post-treatment processes such as hot pressing, sandblasting, or secondary coating can be used to further enhance the adhesion of UV ink.

The problem of poor adhesion of UV ink involves multiple aspects, which need to be comprehensively solved from multiple perspectives such as substrate treatment, ink formulation, curing conditions, and environmental control. By implementing the above solution, you can effectively improve the adhesion of UV ink, ensuring stable and improved quality of printed materials. In the pursuit of efficient and environmentally friendly printing processes, continuously optimizing the use process and technical parameters of UV ink will be the key to the sustainable development of printing enterprises.

Solution to poor adhesion of UV ink

Zhongzhixing UV Ink - Your Expert in Adhesion Solutions!
We are well aware of the importance of UV ink adhesion to printing quality, therefore, Zhongzhixing UV ink pays special attention to compatibility and adhesion improvement with various materials during the research and development process. Through continuous technological innovation, we have successfully launched a series of high-performance UV ink products, which are widely used in various fields such as packaging, labeling, advertising, and publishing.

Product Highlights:

Excellent adhesion: Optimized for multiple materials to ensure that ink can firmly adhere to different surfaces.

Rapid drying: Advanced photopolymerization technology is used to achieve rapid drying of ink and improve production efficiency.

Vibrant colors and high glossiness: Maintain the traditional advantages of UV ink and add infinite charm to your prints.

Environmental Health: All products meet environmental standards, are non-toxic and odorless, providing a safe working environment for you and your customers.

As a leader in the printing industry, Zhongzhixing is well aware of the importance of UV ink adhesion to printing quality. Therefore, we are committed to researching and producing high-quality, high adhesion UV ink products. Our ink not only has bright colors and high glossiness, but also performs well in adhesion. Whether for smooth material surfaces or complex printing structures, Zhongzhixing UV ink can provide excellent adhesion and printing effects.